The OMICRON Customer Magazine for the Middle East and South Asia
Volume 6 Issue 2 2015
Magazine Innovative Power System Testing Solutions
6 CPC 100: 43 possibilities, 1 system 3 Test solutions for generators: ensuring a safe and reliable power supply – 16 RelaySimTest: for a safe journey in the future – 24 First-class customer support: listening and understanding omi_magazin_issue11_MESA_RZ.indd 1
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Table of contents Editorial
Dear readers,
Bill Kibart Regional Sales Manager Middle East and South Asia
Many of you will be new to the OMICRON Magazine,
Once the protection has done its work, the onus is
indeed you may be unfamiliar with OMICRON
on the circuit breaker to clear the fault. Therefore,
itself and so I would like to start by giving you an
correct operation is essential and can be confirmed
introduction. OMICRON is an international company
by correct testing, a topic later explained with a
that provides solutions for the testing and on-line
Nordic twist by considering an application in Norway.
monitoring of electrical substations and associated equipment for electrical utilities, equipment
The logical extension of periodic testing is
manufacturers, commissioning companies and
to utilize on-line monitoring to continually
industrial customers. With sales in nearly 150
supervise your assets and this topic is also covered
countries, OMICRON has established an international
by investigating the monitoring of potential
reputation as a supplier of the highest quality.
partial discharge in the insulation which, if undetected can lead to catastrophic failure.
The purpose of the OMICRON Magazine is to highlight applications in the power system sphere
The key factor in a good relationship between
where testing and monitoring solutions are being
a supplier and user is support. In this issue we
utilized so that potential users can identify how
explain how we strive to provide the highest
modern equipment can be used to improve their
level of assistance to our customers around the
methodology and systems. In this sample copy of
clock and across the globe. This relationship is
the magazine we cover a wide variety of topics.
also strengthened by understanding the needs and perspective of the customer and to this end
Starting with the generator, we can see how
a questionnaire has been included which I urge
proper testing can ensure the reliability of the
you to spare some time to complete. Those which
system and avoid the costly consequences of failure.
are returned to us will be entered into a drawing
Traditionally, OMICRON has been known for its
where two lucky winners will receive an iPad mini.
protection testing and this remains a vital part of our business, but it is a very dynamic area where
If you find this magazine interesting and would
technology never actually stands still. The increasing
like to see future issues, please contact us at
use of IEC 61850 system communications requires
info.mideast@omicron.at, so we can ensure that you
new tools to ensure that the digital signals in the
receive an e-copy of the magazine in the future.
substation can be handled appropriately. The use of powerful simulation software can also assist in
Enjoy the read.
assuring the correct operation of the protection itself. Both of these issues are addressed in the article on the UK’s Network Rail’s Great Western system. Bill Kibart
OMICRON Magazine | Volume 6 Issue 2 2015 Middle East and South Asia
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Application
3
Application
Ensuring a reliable
power supply Generator testing avoids the costly consequences of failure Gaal Umwelttechnik provides industrial organizations with testing services to ensure reliable generator operation. For many years, industrial companies with medium-voltage (MV) generators are the principle customers of Gaal Umwelttechnik. These companies include airports, data centers, paper mills as well as chemical plants and waste treatment plants. They all use MV generators on site to ensure a continuous, reliable power supply that is so crucial for their operations. With the experiences of more than 30 years working with generators in the area of industrial power generation, Zsolt Gaal and his team have established testing procedures for reliable condition assessment of these generators.
Using diagnostics to prevent failure
of dissipation factor and capacitance,
All types of generators have insulation,
dielectric response and partial discharge
which is subject to operational stress and
measurements. These off-line measure-
Founded in 1991 and based in
aging processes. Weak spots and deterio-
ments are conducted by Gaal engineers on
Hannover, Germany, GAAL Umwelt-
ration in stator winding insulation in par-
site during commissioning as well as during
technik is a service company that
ticular can eventually result in a complete
periodic maintenance checks throughout a
specializes in secondary testing of
failure of the machine. “The consequential
generator’s service life.
generator protection devices and
GAAL Umwelttechnik
energy distribution systems as well
costs in the event of a machine failure are immense,” says Zsolt. “That is why diagnos-
“We own a CPC 100, CP TD1 and CP CR500,
as primary testing for condition
tic testing of the insulation is so important
a DIRANA and a MPD 600 from OMICRON.
assessment of generator insula-
over the entire service life of generators.”
Together these diverse solutions cover
tion systems. Its customers include
everything that we need for primary test-
industrial companies throughout
Gaal Umwelttechnik uses various diagnos-
ing on generators,” Zsolt says. “You can get
continental Europe.
tic measurements for reliable condition
excellent performance out of these testing
assessment of insulation; measurement
products.”
www.gaal24.de Magazine | Volume 6 Issue 2 2015
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Application
«The consequential costs in the event of a machine failure are immense. That is why diagnostic testing of the insulation is so important over the entire service life of generators.» Zsolt Gaal Managing Director at Gaal Umwelttechnik and a member of CIGRE
Data centers are one of many types of industrial companies that are dependent on reliable generator operation.
With the measurement of capacitance and
strength. Compared with other dielectric
Gaal Umwelttechnik performs a number
power / dissipation factor, also known as
tests, PD measurements allow localized weak
of tests on the insulation of its custom-
tan-delta, changes in the insulation can be
points of the insulation to be identified.
ers’ rotating machines. This way, Gaal
diagnosed using the CPC 100 and CP TD1.
engineers are able to obtain a lot of
Aging processes, changes in the insulation
“We achieve the best results with the MPD’s
information, which can be compared to
structure or moisture all result in measur-
synchronous, multi-channel PD measure-
verify results. “The various test measure-
ably increased power / dissipation factor
ment, which separates internal PD sources
ments help us to confirm or negate any
levels. Measuring power / dissipation factor
from each other and from outer noise
suspicions we may have,” Zsolt explains.
over a wide frequency range using DIRANA
signals common in industrial environments,”
“We start with a typical voltage withstand
helps to determine the dielectric response
Zsolt continues. “Finally we conclude with
(DC) test of the insulation to make sure
in order to differentiate between several
an insulation resistance measurement to
that it can handle the high-voltage testing
polarization losses and power losses.
make sure that the insulation was not dam-
Verifying condition with various tests
that is about to be performed. Then we
aged in any way by testing and that it can
conduct a power / dissipation factor and
“After the dissipation factor measurement
capacitance measurement over a wide fre-
we make a partial discharge measure-
quency range with DIRANA, continued by
ment with the MPD 600,” says Zsolt. Partial
Establishing a baseline trend
a power / dissipation factor measurement
discharge (PD) occurs in the stator insulation
Gaal Umwelttechnik compares current
tip-up test using the CPC 100 combined
system of rotating machines, where local
measurements with previous data to come
with CP TD1 and CP CR500.”
electric field stress exceeds the local electrical
up with a reliable conclusion. “One has to
be returned to normal operation”.
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Customers of Gaal Umwelttechnik use medium-voltage generators on site to ensure a continuous, reliable power supply.
build up a trend to understand changes in condition,” Zsolt says. “That is why it makes a lot of sense to start testing if you have the chance at the beginning during commissioning. This provides you with a basis that you can build on with successive measurements for a real comparison over time”.
Filtered interference signals
“As long as there are no unusual values, then everything is OK,” says Zsolt. “However when anomalies are found during these tests, then it is important to keep an eye on them during subsequent tests. If the measurement values become progressively worse, then I recommend to the customer to take the necessary maintenance or repair measures,” he says. “In this case we conduct further testing to make sure that repairs were performed successfully.”
Separated PD activity Separation through 3PARD (3-phase amplitude relation diagram)
Advanced measurement techniques allow the MPD 600 to separate internal PD sources from outer noise signals for optimal results. Magazine | Volume 6 Issue 2 2015
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Application
Application
43 possibilities –
1 system
Customers around the world talk about how they use the CPC 100
Whatever the application – be it power transformer testing or ground and line impedance measurement, or when used as a high-voltage source for partial discharge measurement or current and voltage transformer testing – the all-rounder CPC 100 effortlessly takes on all of these roles.
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Application
7
CPC 100 and accessories > Replaces multiple testing devices through a multi-functional universal test system > Various tests on high-voltage systems such as current and voltage transformers, power transformers, switchgear and rotating machines can be performed with the CPC 100 > Powerful and universal: 800 A, 2 kV, 15 Hz – 400 Hz, 400 A DC > Simple to use and easy to transport due to light weight (29 kg/64 lbs) > Expandable to 2 000 A AC , 12 kVAC when using accessories
www.omicron.at/cpc100
The multi-functional primary test system CPC 100 was developed specifically for the commissioning and maintenance of systems in electrical networks. It replaces numerous individual testing devices and at the same time, offers you new, innovative testing methods. Despite its range of capabilities, the CPC 100 is easy to use. Electrical tests on various assets including power transformers, current or voltage transformers, grounding systems, power lines, rotating machines and cables, as well as circuit breakers can be performed much faster. Due to the variable output frequency, the user can also use test frequencies that differ from the mains frequency. This allows mains-related interference to be effectively suppressed. The CPC 100 was first introduced in 2001 and has been continuously improved since then. Thanks to a wide range of accessories, the testing device is versatile like no other. As a result, new application areas have opened up in recent years. Today, more than 40 tests can be performed with the CPC 100. We asked customers around the world what they used the CPC 100 for, and what they particularly appreciate about it.
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Application
«Simple to use, high functionality and easy to transport.»
«Comprehensive documentation options and time-saving work.» Bernhard And ers and Berthold Stoc khausen SAG Group G mbH
Padraig O´Sul livan ESB Internat ional
The inspection of grounding systems in transmission sta-
Customer service is a top priority at the SAG Group. “Our customers,
tions was a time-consuming and complicated process for
such as wind farm operators, wanted to record their test results in
ESB International: “We used a transformer mounted on a truck
a much more detailed way than it was possible with our previously
trailer in order to achieve the necessary current strength. Sure,
used testing equipment. That is why we decided to buy a CPC 100
the method worked, but the transport was a catastrophe and
four years ago,“ recalled Berthold Stockhausen and Bernhard An-
the frequency could not be changed,“ recalls Padraig O´Sullivan,
ders of the SAG Group GmbH.
Consultant for Asset Management Services at ESB International. “So we started looking for an alternative, and found one at
“When testing with the CPC 100, we no longer need to manu-
OMICRON.“ Padraig O´Sullivan has now been working with the
ally transfer measured values individually into the test report, but
CPC 100 and CP CU1 for more than 10 years. For him, the change
instead, can store them directly in the CPC 100 and retrieve them
has paid off: “The CPC 100 can do much more than our old test-
again later at the office,“ said Bernhard Anders. “If necessary, we can
ing system, is easier to use, to transport and to connect up.“
also create a PDF document directly and email it to our customers.“ This eliminates errors when transferring data. “For me, this reliable
The advantages of the CPC 100 are really obvious: “In addition
and time-saving method of recording data is definitely the greatest
to the mobility, we especially appreciate that the testing system
advantage,“ added Berthold Stockhausen.
is easy to use. Thanks to the guided testing workflow of the Primary Test Manager™ software, even inexperienced users can
Purchasing the CPC 100 also brought additional benefits. “We used
operate the CPC 100 right away. Our experienced colleagues
to have to do everything individually. We had to bring everything
can also create customized test procedures for exactly what
with us and connect all of the appropriate multimeters, devices
they needed.“
for energizing the asset and others,“ said Bernhard Anders. “That takes a lot of time, which we can now save using the CPC 100. This accommodates the increasing time pressure during commissioning in particular.“
Since ESB International was founded more than
SAG Group GmbH is the leading service and system
40 years ago, it has risen to become one of the
supplier for electricity, gas, water, district heating
world’s leading consultancy companies for
and communication networks, as well as for systems
engineering services. ESB International is head-
for the generation, transmission and use of power
quartered in Dublin (Ireland), and operates in the
and media in Europe. Over 100 locations in Germany
area of electricity supply and implements large-
ensure nationwide service for regional and munici-
scale projects for infrastructure development. The
pal energy suppliers, industrial companies, power
company belongs to ESB, Ireland’s national power
plant operators and transport companies. Other core
company, and employs more than 700 employees
markets of the SAG Group are France and Central and
in Europe, the Middle East, Africa and Asia.
Eastern Europe.
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Application
«Precise test results.»
9
«Versatile all-round talent.»
Luis Carlos Ra mírez Pernet t Transelca
Rüdiger-Will y Klein DB Energie G mbH
In the past, calculation methods were typically used when deter-
With the CPC 100, a variety of test equipment can be replaced
mining line impedances in the railway network. “Unfortunately,
by only one multi-functional testing system. “It used to be
these theoretically calculated values were often inaccurate. Only
that performing different tests meant that we had to bring a
in individual cases were we able to perform measurements that
wide array of test devices with us and re-wire multiple times
delivered more precise results,“ explained Rüdiger-Willy Klein
between the tests,“ recalled Luis Carlos Ramírez Pernett, Sub-
of DB Energie GmbH. “We used traction current generators and
station Maintenance Scheduling Coordinator at Transelca, “and
special circuits for this. The effort was immense and not applicable
we then had to summarize the test results manually.“
to the entire network.“ The versatility of the CPC 100 was the deciding factor in purTherefore, DB Energie GmbH started looking for a test system,
chasing the test system about six years ago. “We test circuit
with which a determination could be made with limited effort,
breakers, power transformers, current and voltage transformers
and found the CPC 100. “Now we can measure the line imped-
and capacitor banks. Among other things, we determine the
ances across the board, rather than just calculate them. In this way,
dissipation factor, turns ratio per tap and the winding resis-
we obtain actual values and can precisely set our distance relays
tance on the transformer. We also use the CPC 100 to measure
accordingly. Fault analysis showed us that precise fault location
the knee-point voltage, magnetization characteristic, burden
was possible where measured values have been set.“
and winding resistance on current and voltage transformers,“ explained the technician.
Another advantage for DB Energie GmbH is that the test frequencies can be variably adjusted with the CPC 100. “This is particularly
“We can do all of this and much more with the CPC 100. It is
important for us, because in addition to the tests conducted in the
compact, easy to use, and the communication with the PC is
railway area with 16.7 Hz, we also take line impedance measure-
simple. Thanks to the integrated display, I do not even need a
ments on smaller medium-voltage systems with 50 Hz.“
laptop when testing on-site.“
DB Energie GmbH is an independent energy manager, and is responsible for the largest mixed energy portfolio
As an Energy Transmission Company based
in Germany. The company offers tailor-made solutions for
in Barranquilla, Colombia, Transelca operates
the supply of traction current, three-phase current, gas
power transmission and telecommunications
and diesel fuel. Railway undertakings, industrial or com-
networks on the country’s northern coast.
mercial companies are provided with expert advice on all
Planning electrical facilities for voltage levels
matters. In addition, DB Energie is the long-term energy
from 13.8 kV to 220 kV is also part of Transelca’s
supplier of Deutsche Bahn and responsible for the highest
portfolio. The company also has facilities in Peru
supply reliability of railway companies in Germany.
and Bolivia.
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Products and technology
Products and technology
Synchronous
time keeper TICRO 100 enhances the precision of simultaneous measuring processes in protection techniques Albert Einstein once said, “time is relative and depends on the movement of the observers“. Relatively speaking, he was completely right. The laws of physics also apply to the world of secondary technology; but here the objective of precision of absolute time measurement and synchronization matters most.
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Products and technology
TICRO 100 > IEEE 1588 PTP time converter > Precise generation of time codes such as IRIG-B, DCF77 and PPX > Highly stable internal reference oscillator for optimum hold-over in case of network failures. > Developed especially for use in electrical engineering > Freely configurable trigger times > Secure web interface
www.omicron-lab.com/ticro100
Anyone who wants to perform a correct
Therefore, IEC 61805-5 prescribes differ-
Essentially, PTP is a communication protocol
phase comparison or who evaluates error
ent precision classes for time sensitive
based on time stamps, which allows the
logs from protective relays is dependent on
measurements and time-stamped events.
time on several devices to be precisely
reliable time specifications for the locations
They determine the maximum admissible
synchronized using existing Ethernet con-
concerned. If the measurement systems of
time inaccuracy of a measurement or a
nections. Unlike NTP, PTP offers much
secondary technology systems are decentral-
time-stamp, typically related to UTC. The
higher precision in local area networks with
ized, precise synchronization is necessary.
required synchronization precision lies be-
a system accuracy in the 100 ns range. To
This becomes especially difficult for time sen-
tween ± 1 ms and ± 1 µs. The IEEE standard
achieve this, it uses a master-slave configu-
sitive applications in protection technology.
1588 provides an Ethernet based system
ration of the clocks available in the network,
suitable for such applications – the Preci-
in which the best clock capable of serving as
sion Time Protocol (PTP).
grandmaster becomes the designated “time
The dilemma with time signals
provider“. The Best Master Clock Algorithm
In order to ensure the necessary precision, protection technology engineers supply
For the use of PTP in IEC 61850 infrastruc-
(BMCA) used for this purpose acts demo-
Intelligent Electronic Devices (IEDs) with
tures, a specific “Power Profile“ was defined
cratically since the grandmaster clock only
time reference signals provided by a central
in 2011. An additional standard extension,
continues to be the leading clock as long
station clock, often through separate
the IEC 61850-9-3, which defines a simple
as it provides the best time reference for
cables. However, separate wiring requires
PTP profile especially for power grid opera-
the entire system. Otherwise, another clock
more time and effort for installation and
tors, has now been released. Bernhard
capable of becoming grandmaster immedi-
maintenance. Moreover, the time signals
Baumgartner is the Business Manager
ately takes on this function, free of interrup-
used during this process (for example,
at OMICRON Lab and believes that this
tion and with a synchronization precision
those which are made available by DCF77)
technology has many advantages: “PTP is
better than 1 µs.
run the risk of differences in propaga-
the most precise and secure method for
tion time between locations caused by
the time synchronization of networked
Due to the fact that nothing is ideal in the
atmospheric influences. The alternatively
systems and IEC 61850 structures. It makes
real world, there are measuring instru-
used Network Time Protocol (NTP), well
the separate distribution of time reference
ments in many areas that work with the
known in the fields of UNIX and Windows,
signals and the use of several decentralized
most diverse time synchronization signals.
is not precise enough for the requirements
GPS reference times unnecessary. It thereby
Some of the latest generation protection
in special areas such as the SynchroPhasor
eliminates a multitude of potential error
devices already have an IEEE 1588 compli-
measurement.
sources and system inaccuracies.“
ant Ethernet interface. Magazine | Volume 6 Issue 2 2015
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Products and technology
OTMC 100 All in one:
Station controller
GPS antenna
GPS receiver
Grandmaster clock
Ethernet network for control, communication & time synchronization
OTMC 100 PTP grandmaster IEDs
IEDs
IEC 61850
TICRO 100 PTP time converter Slave clock
Merging unit
00010
Bay 1
PTP-capable devices
IEEE 1588 time synchronization IEC 61850 & IEEE 1588
Merging unit
00010
Slave clock
Slave clock
TICRO 100 PTP time converter
Bay 2
Slave clock
non-PTP devices
Time synchronization of PTP-capable and PTP-incapable equipment with the IEC 61850 station bus.
from OMICRON Lab. The appliance then
only the station bus connected instead of
protection devices will still operate. For
generates time reference signals in the for-
OTMC 100. The internal high stability refer-
a switch to PTP or IEC 61850, the protec-
mat required by the IED – either as coaxial
ence oscillator ensures that in the event of
tion technology engineers are tasked with
output with the TTL level, or as a potential-
a network failure, TICRO 100 continues to
integrating such devices as efficiently as
free or optical output signal. This enables
provide precise time signals – depending
possible. Bernhard Baumgartner says:
the majority of all devices in the field to be
on the selected oscillator option with a
“With TICRO 100 we offer our customers
synchronized.
maximum deviation of < 25 µs or < 100 µs
However, a high number of PTP-incapable
to UTC within 24 hours.
a simple and flexible PTP time converter that precisely performs this task. TICRO 100
In combination with a directly connected
converts PTP into understandable time
OTMC 100, TICRO 100 generates a highly
With its functional variety, TICRO 100
reference signals for practically every IED.
precise local time basis, to generate the
forms one of the essential cornerstones
This significantly simplifies the integration
required time codes as well as time refer-
of high precision measurements, as it is
of existing devices.“
ence signals such as second and minute
required not only by the IEC 61850. It
pulses. Thus, systems synchronized via
supports the secondary technology as well
Out of the box
IRIG-B or DCF77 can now be provided
as every phase of the conversion to this
Connecting TICRO 100 is very simple; the
with locally generated time reference
standard, which is becoming more and
appliance receives the PTP signal from the
signals derived from GPS. Even a later
more important in electrical engineering.
PTP grandmaster via Ethernet. This can be
conversion to a central PTP station clock
More information on the use of IEEE 1588
the central station clock or a grandmaster
then becomes problem-free; the existing
in electrical engineering can be found here:
clock connected to GPS, such as OTMC 100
TICRO 100 wiring remains unchanged, with
www.omicron-lab.com/ieee1588
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Application
13
Austria
A
From ustria to ambia
Z
Zambia
How a CMC 256plus supports the Kafue Gorge Regional Training Centre Power system equipment in Zambia is aging as most of it was installed in the 1960s and 1970s. Most of the equipment in generation, transmission and distribution systems requires an upgrade. In Zambia, the national utility ZESCO Limited
OMICRON in Africa OMICRON products are already being used in 34 African countries – inclu-
embarked on a system upgrade program called the Power
ding ESKOM (South Africa), the lar-
Rehabilitation Project (PRP). This program led to the modern-
gest electricity producer on the con-
ization of the protection systems and the engineer faced new challenges with respect to relay testing.
tinent. In total there are more than 1 000 CMC test sets in use in Africa. Customers and interested parties can contact us personally at about 15 events that take place every year, such
Upgrading the power level
cost electricity in an efficient manner in
as the OMICRON South African User
The PRP supports the Government’s objec-
order to stimulate inclusive growth in the
Conference (SAUC) from November
tives for enhancing the ability of Zambia’s
Zambian economy. The PRP is involved in
9 to 10, 2015 in Johannesburg.
Electricity Supply Industry to provide low
the rehabilitation and up rating of the Magazine | Volume 6 Issue 2 2015
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14
The parcel with the CMC 256plus being received at KGRTC.
The test device is connected and ready for use.
The CMC 256plus being put to use.
training programs are focusing on Line
ing protection devices, two of our electri-
Zambia. As part of this project the measur-
protection and Transformer protection
cal lecturers also attended the OMICRON
ing and protection equipment was changed
and voltage regulation, and each course
Basic Protection Testing training course in
from old electro mechanical relays to mod-
includes hands on exercises with a specific
Johannesburg, South Africa.
ern intelligent electronic protection relays.
emphasis on ABB’s 670 series and 650
three major hydro power stations in
series of products. The courses’ purpose is
The CMC 256plus proved successful when
Filling the skills gap
to impart the fundamentals and principles
used for the practical training sessions
The major power consumers in Zambia are
of each topic area.
testing ABB IEDs ranging from transformer
the copper mines along the Copperbelt.
differential protection to line distance
The old mines have also been upgrading
What’s in the package?
protection. The injections from the test set
their old electrical infrastructure to modern
To aid protection engineers in carrying out
were performed for different configurations
switchgear and transformers. The chal-
these tests on the various relays during
and settings in the IEDs under the guidance
lenge that this created for the protection
the training program, we asked OMICRON
of Patrick Cost, a Protection Trainer and
engineers was that they were trained to
(Austria) if they could support this initiative
Application Specialist from ABB.
maintain and test the old electro mechani-
by loaning us a CMC 256plus for instruc-
cal protection relays, but the skills they
tional purposes.
had acquired were no longer sufficient for
It’s all connected The participants in the first training pro-
maintaining and testing the new Intel-
We chose OMICRON because of their
gram were KGRTC lecturers and protec-
ligent Electronic Protection Devices (IEDs)
reputation for making the best test sets for
tion engineers from ZESCO (Zambia),
that were installed as part of the upgrades.
testing protection and measuring devices
the Swaziland Electricity Company and
and the fact that their equipment is widely
the Uganda Electricity Transmission
In order to fill this gap in their skills, Kafue
used and well established in Africa. The
Company Limited and from ABB, Uganda.
Gorge Regional Training Centre (KGRTC)
CMC 256plus was delivered in April 2014
The CMC 256plus was also used for the
partnered with ABB to develop two train-
complete with the Test Universe Software
Transmission System Design Maintenance
ing programs for protection engineers
package, the GOOSE module and the
and Protection (TSDMP) course which was
working for utilities in Zambia, other
EnerLyzer recorder software. In order to be
designed for engineers from the Rwanda
African countries and beyond. The two
trained to operate the CMC 256plus for test-
Energy Group (REG).
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Application
15
The Kafue River is one of the longest rivers in Zambia.
The practical training programs for testing protection devices that are being conduct-
KGRTC
ed using the CMC 256plus, are providing
The Kafue Gorge Regional Training Centre is located in
up to date knowledge and skills to protec-
Namalundu 100 km / 62,14 miles south of Lusaka, in the
tion engineers from Zambia, the region
vicinity of one of Zambia’s largest hydropower stations –
and beyond. When commenting on the
Kafue Gorge Power Station. The Training Centre was
Generator Protection component of the
established in 1989 by the Southern Africa Development
ABB program one delegate remarked that
Community (SADC) to offer specialized training in hydro-
“It’s a good program and I would advise
power and related engineering disciplines. There are now
management to continue making such ar-
over 3 000 course participants from various African utilities
rangements because technology is chang-
who have attended courses at KGRTC.
ing every day and there is a need to remain up-to-date.” Clement Twenda from ZESCO added “The program should be conducted at regular intervals”
Lusaka Kafue
Eng. Mpezilwe Simukoko Electrical engineering lecturer in KGRTC
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16 Application
Oxford
Reading Newport Swansea
Bristol
For a safe journey in the future
Westbury
Network Rail’s approach for protection scheme testing of the Great Western protection system
Southampton Central
Plymouth Penzance
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Application
17
Reading
London Heathrow
In collaboration with the Department for Transport, train companies and other stakeholders, Network Rail, the owner and operator of most of the rail infrastructure in England, Scotland and Wales, aims to electrify key railway
Guildford Gatwick Airport
routes to provide a faster, quieter, more reliable and environment-friendly transport system. By electrifying the Great Western route, one of Britain’s busiest railroads, over 50 substations will either
Southampton Central
be built or renewed.
Portsmouth Harbour
For the first time, Network Rail will operate these substations with a new supply scheme called the Rationalized Autotransformer System (RATS). The manifold new approaches associated with this scheme called for early trial testing, as well as an innovative approach for testing the protection system. Learn more about the trial tests, the protection concept, and how the challenges of testing such a system were tackled with RelaySimTest.
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18 Application
How does the RATS protection scheme basically work?
What was novel about the testing approach?
As soon as a fault occurs, all of the circuit breakers in the feed-
A well-known and established method for fulfilling the
er station trip. Then the automation element disconnects the
testing requirements is running time synchronized steady-
faulty equipment, having assessed the fault location by using
state sequences on each test set. In this case RelaySimTest
the distance zones and current directions detected during the
(software for simulation-based and distributed protection
fault. Finally, the circuit breakers in the feeder station that are
testing) was also used. Furthermore, CMC test sets and
not feeding the fault, close. All substations in one section com-
two DANEO 400 units (hybrid signal analyzer for power
municate via GOOSE messages over an extended IEC 61850
utility automation systems) were used. A special version
station bus in order to provide sufficient data to isolate faulty
of RelaySimTest was developed to simulate a 25-0-25 kV
feeders automatically and restore healthy feeders.
autotransformer electrical traction system in order to support Network Rail in the trial testing.
What does the test environment look like? The smallest possible electrical section that can test and de-
The distributed test sets can be controlled either by a
velop the protection scheme consists of a feeder station, one
direct network connection or via an ordinary internet con-
autotransformer site, two catenaries and two feeder lines. Each
nection. When the RATS protection scheme was tested
line is primarily protected by a single phase, distance protec-
it was possible to configure free ports on the substation
tion relay. Using GOOSE messages, all relays have to commu-
network to control the test sets with just one PC.
nicate over an Ethernet network with a Sequence Controller containing the protection and restoration scheme.
Using a power system simulation and having the ability to control multiple test sets synchronously are both separate innovative features. Combined they create an innovative
ATFS
ATS
SATS
Willow Park
Astley
Ordsall Lane
solution that really shines for challenging cases such as testing the RATS automation scheme. Compared with steady-state sequences that have to be designed for every
The test environment consists of three stations: the Autotransformer Feeder Station (ATFS) with circuit breakers on each line, the Autotransformer Station (ATS) which is only connected via load breaker switches, and the Section Autotransformer Station (SATS) equipped with circuit breakers.
The test set is completely wired-up by the technical team and awaits execution with RelaySimTest.
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News
19
relay of each test case, a simulation based approach can scale up to an unlimited number of relays for all probable test cases and levels of complexity. How did the team test the communication? Another aspect of the RATS protection system is the communication between the relays distributed over substations and the Sequence Controller. Similar to the system that will be installed in the Great Western Route Modernization, each device communicated via two redundant networks to make the protection system highly fail-safe during the trial test network. By using two GPS-synchronized DANEO 400s that recorded all of the messages on the communication network, the technical team was able to prove that network latency is not an issue for the scheme.
News
ISIO 200’s enhanced functionalities New SCADA IEC 61850 interface and optimized usability
RelaySimTest
With its new IEC 61850 server, ISIO 200, the versatile binary I/O
>> Application-oriented testing of protection
terminal for Substation Automation Systems, offers extended func-
systems independent of relay type and
tionalities. It now communicates with an IEC 61850 SCADA system.
manufacturer >> Distributed testing made easy by control-
The server maps the binary inputs and outputs to attributes in
ling multiple CMCs from one PC via any
the IEC 61850 data model. Changes to the binary inputs trigger
Internet access
IEC 61850 reports and GOOSE messages. The binary outputs can
>> Testing of advanced relay functions such as
be controlled by subscribed GOOSEs and by control services. You
power swings, transient ground faults, ca-
can select one of the four models being offered (general-purpose
pacitive line phenomena, complex telepro-
I/O interface, CB interface, overcurrent relay interface, and telepro-
tection and adaptive protection schemes
tection interface).
>> Simulation of CT saturation and the ability to import CT Analyzer reports >> Applicable for testing protection systems for railroad networks.
www.omicron.at/relaysimtest
The redesigned web interface with its new look and feel for an optimized operating experience fully supports mobile devices with small screens, e.g. smartphones.
www.omicron.at/isio200
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20 Application
Application
Nordic testing Reliable and comprehensive troubleshooting for circuit breakers
Since its market launch in 2013 customers all over the world have started to use CIBANO 500 to test their circuit breakers (CBs). So have EB Elektro AS in Hokksund, Norway. During a maintenance job for one of their customers they found a severe failure in a CB before any further damage could occur. For EB Elektro AS CIBANO 500 has once again proven its benefits.
EB Elektro AS is a leading Scandinavian com-
the new concept of CIBANO 500, I became
pany for developing, producing and install-
curious and asked for a product demonstra-
ing high-voltage devices. Odd Tangen works
tion,“ Odd Tangen remembers. “It turned
as a service engineer in the service section of
out that the overall concept of CIBANO 500
CB installation, commissioning and main-
did a good job of meeting my expectations.“
tenance. In 2012 he saw the necessity for
So he ordered the device. “This was a good
a new CB testing instrument. He started to
decision on my part as CB testing became so
research the market. “In 2013 I heard about
much easier,“ Odd Tangen confirms.
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Current condition as a first step
Bad measurement results
In September 2014 Odd Tangen and his
As requested by the customer, condition
team were asked by a Norwegian customer
monitoring was done based on visual
to suggest a maintenance plan for 11 of
inspections and measurements only. No
EB Elektro AS is a manufacturer
their 362 kV, live-tank SF6 CBs. With almost
cost-intensive disassembly should be
of high-voltage devices such as
30 years of practical experience in the
undertaken. The visual inspections showed
disconnectors, earthing switches
field, Odd Tangen didn’t want to begin
nothing unusual.
and motor operating devices.
maintenance procedures with a cost-
21
EB Elektro AS
A part of their service portfolio is
intensive major overhaul of the breakers
Measurements with CIBANO 500 were
the installation/refurbishment,
that was only based on their long service
done next. Together with the main
commissioning and mainte-
life. “For me it was more cost-effective to
contact module CB MC2 for the dynamic
nance of circuit breakers. The
assess their current condition first. So I
contact resistance test and the transducer
head office and production faci
recommended carrying out a condition
node CB TN3 for the motion/contact
lities are in Hokksund, Norway.
monitoring,“ he explains his decision. “If
travel test all measurements were able to
we would find any failures, major overhaul
be executed without rewiring between
actions could be taken afterwards.“
the tests.
www.eb-elektro.no
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22
Application
The timing measurement already showed abnormal
fact that the instrument can measure contact timing,
timing in one phase of a CB during a close operation
travel, static and dynamic contact resistance, coil cur-
and Odd Tangen and his team became suspicious
rent, minimum pick up and undervoltage condition
(Fig. 1.). They received further unusual results dur-
with the same wiring setup,“ summarizes Odd Tangen.
ing the static and dynamic resistance measurements
“This helps me to save a lot of time during my daily
(Fig. 2). The C, O, and CO operation showed closing
work, because I don’t need to change the wiring sev-
times that changed in the same phase.
eral times as with other test systems,“ he adds. “Another great feature is the built-in power supply, because
Gas analysis confirms measurements
it gives me independence from a station battery.“
After the measurements with CIBANO 500 an SF6 gas analysis was done. Different parameters including dew point, gas volume, SO2 level, and gas pressure were tested. The results of the gas analysis were really bad. Especially the SO2 content was abnormally high. “The gas literally stank,“ remembers Odd Tangen. “This was additional proof that something was definitely wrong with one phase.“ The next step was to take the CB out of operation and replace it with a spare unit. “It took us four days.“ The defective CB was brought into a workshop where it was dismantled. Soon the reason for the failure was found. “A flashover in the main contact carrier due to loose parts was detected,“ Odd Tangen explains.
Fig. 1: Timing measurement during a close operation shows failure in blue phase.
Flashover in the main contact carrier due to loose parts. Fig. 2: Dynamic resistance measurement shows failure in blue phase.
“The reference measurements after the repair confirmed that the CB worked properly,“ says Odd Tangen (Fig.3). And he continues: “With CIBANO 500 we can do cost-effective condition monitoring and begin comparably expensive overhauls only when necessary – that’s exactly what our customers expect.“ Valuable partner Since his first practical experiences with CIBANO 500 in 2014 Odd Tangen has been in close cooperation with OMICRON’s development team. He is always giving the team his valuable feedback for product enhancements. “What I personally like most about CIBANO 500 is the
Fig. 3: Dynamic resistance measurement after repair.
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23
Application
Odd Tangen Service engineer for EB Elektro AS, Norway
OM: What was your first impression of CIBANO 500 during the product presentation you saw in 2013? Odd Tangen: Right from the start I saw the advantages
«Thanks to CIBANO 500, the wiring effort is cut down to a minimum, which greatly reduces the testing time and probability of measuring errors.»
of its general design and features which offer several benefits compared with other instruments. and only need to measure one motion. When you Can you give me a rough estimate of the num-
have three phases with one interrupter per phase you
ber of tests you have already carried out with
can do all your measurements in one turn: timing,
CIBANO 500?
travel, DRM, static contact resistance, coil current and
So far I have tested about 150 customer CBs in total on
motor current.
site ranging from 12 to 420 kV. In addition I have done quite a lot of tests in the EB Elektro workshop and with
However, when you start testing bigger CBs you really
customers during the development of different trans-
save a lot of time. If you have a CB type with indepen-
ducer applications. These were also several hundred
dent pole operation, for example, you need to mea-
measurements.
sure two interrupters per phase, three motions and
Interview
three dampings in the drive mechanism. This means six What would you say is the best thing for you about
travel parameters, three trip plus three close coil cur-
using CIBANO 500?
rents, three motors of driving mechanisms and DRM in
One big inconvenience while testing with other CB
six interrupters. For such a use case you need to use a
test systems are the time-consuming and failure-prone
mobile personnel lift in order to connect your hard-
wiring setups which sometimes need to be changed
ware and cables. This is really time consuming. With
several times between the different measurements. So
CIBANO 500 you only need to do the wiring once. You
with CIBANO 500 OMICRON’s developers made sure
connect to all three phases, you do all your tests and
to cut down the wiring effort to a minimum, which
you remove the wiring again. With other equipment
greatly reduces the testing time and probability of
you need to do the wiring twice or even three times.
measuring errors. I especially like this aspect of it very
I would say you save 50 % of your time when you use
much, because it pays off every day of my working life.
CIBANO 500 in such a case.
Can you somehow quantify the time-saving you
Are there any general trends you see in circuit
have achieved by using CIBANO 500?
breaker testing?
In order to respond to this correctly, I need to split up
Looking into the future I am sure that we will see more
the answer. For the smaller breakers from 12 to 24 kV
and more cost-effective maintenance based on condi-
you can save 20 to 30 % of time. Normally these break-
tion monitoring as customers become more and more
ers are easily accessible and the wiring is no problem.
critical of time-based maintenance.
In general you have a CB with ganged pole operation Magazine | Volume 6 Issue 2 2015
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24 Background
Background
What can we do for you? First class customer support means listening – and understanding
Relationships are part of our everyday lives. For example, we have
venient time, such as during the commis-
relationships with our spouses, parents or colleagues. Fundamen-
sioning of equipment, then costly delays
tal aspects such as respect, helpfulness, appreciation and trust form the foundation of these successful and strong connections.
will quickly occur. To maintain flexibility in such cases, we immediately provide replacement equipment, without red tape
We also want to incorporate these values in our professional rela-
whenever possible. One customer state-
tionships. At OMICRON, we have been maintaining close relation-
ment from the 2013 study sums it up: “It
ships with our customers since the very beginning, putting their satisfaction at the center of our operations. Our customers are
is simply an uncomplicated relationship; minimal bureaucracy and quick responses. Regardless of whether it concerns loan
confident in our ability to fulfill their future needs in the best
units, telephone support, replacement
possible way. But what exactly do we do for them?
equipment or on-site personnel working on a difficult or new measurement. The response from OMICRON is always excel-
Understand their needs
show a demand for simple customer sup-
lent.“ Our products provide more than just
Before we can offer truly enthusiastic sup-
port that responds quickly to their needs.
reliable quality. Calibrations and case-by-
port to our customers, we must understand
On the other hand, responses regarding
case, out-of-warranty repairs, for example,
their needs and desires. In order to do so,
shipping delays, such as those caused by
are handled fairly and in accordance with
we not only rely on our experiences and
customs, were found to be remarkably
the customer's wishes.
direct feedback from personal contacts, but
tolerant. Our logical operational response;
have also repeatedly conducted customer
reduce repair times as much as possible
Strengthen and tailor our
satisfaction surveys in various regions since
instead of investing unnecessary amounts
customer relations
the year 2000. The results of these analyses
of energy and money in accelerating the
Every customer is an individual and wants
are critical in helping us illuminate the
shipping process.
to be treated as such. Therefore, they not only receive around the clock technical
areas with which our customers are satisfied and those which we need to improve.
Even if our customers can fully rely on
support from a qualified technician who
These surveys reveal some very interest-
the quality of our equipment, occasional
competently addresses their problems
ing cases; in cases involving repairs, the
unexpected problems and defaults are
and questions, but also a representative
overwhelming majority of responses clearly
unavoidable. If this happens at an incon-
who is always friendly, communicative and
Magazine | Volume 6 Issue 2 2015
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Background
25
«Our international team responds to over support questions each month — around-the-clock, seven days a week. We answer the general questions customers have about products and how to use them, or support customers during a test both via telephone and on site.»
1 000
Michael Jäger, Technical Support
enthusiastic. We take the time necessary for each request and communicate on an equal footing. A customer from Switzerland lets us know, for example, that we are on the right path and praised our “familiar feeling“. Moreover, he values our “mutual technical interest, not just a sales interest; OMICRON takes you seriously. They quickly deal with your problems, whether they involve technical support, information or offers. You get a response in the shortest amount of time and their closeness to customers is remarkable.“ As a company present around the world, it's not just about ensuring the availability of our support across all timezones, but also about taking cultural differences and characteristics into consideration. A nod of the head, for example, is understood as an affirming “yes“ in most countries around the world. Not so in India; here people move their head back and forth to politely affirm something or show that they are listening attentively. Therefore, our support and sales teams are trained to understand and consider the unique qualities and behaviors of various cultures. This promotes smooth cooperation and makes strong
Our Technical Support team is dedicated to providing professional customer service. We handle service and warranty cases quickly and efficiently. Magazine | Volume 6 Issue 2 2015
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26 Background
Customer satisfaction survey business relationships possible. It is almost Between 2012 and 2014 we carried out a comprehensive customer satisfaction survey in Germany, Austria, Switzerland and the United States.
a given that our software, manuals and training videos are available in multiple languages. Is your language missing? We are staying on the ball, for example we are adding Korean to our four other Asian languages for our Test Universe verification
Over
software.
1 500 100
people took part in it.
of the surveys More than took the form of qualitative interviews.
Staying up-to-date, even in the future The constant maintenance of our products and the development of new solutions enable customers to rely on the sustainability and the secured future of their investments. We channel more than 15 % of our total sales into research and develop-
95
% of participating customers indicated overall that they are satisfied to very satisfied with OMICRON.
ment so that tomorrow we can offer more innovative and user-friendly solutions to the increasing complexity in the field of energy technology. Therefore, we not only
The majority of those questioned rate
meticulously work “quietly behind closed doors,“ but maintain a running dialogue with our customers, experts, renowned research institutions and universities. The ideas are then incorporated, for example,
the availability of our Technical Support
the time it takes us to respond to queries
and the technical expertise of the support teams
as significantly better than or at least equal to those of the competitors.
into free software updates or are provided in the form of application notes, papers, and technical contributions in the customer area and on our user forum. In addition, customers have access to free webinars that introduce them to the basics of using
Do you need assistance or want to provide feedback?
their product. This is only a small selection of our activities, which help us keep in touch with our customers and maintain a long-term and successful relationship. We are convinced
Europe / the Middle East / Africa
North and Latin America
+43 59495 4444
+1 713 830 4660 or +1 800 OMICRON
Asia-Pacific
that the quality of our business relations is especially evident after purchases have been made. And, of course, we are delighted to receive particularly satisfying
+852 3767 5500
testimonials from customers: “With respect to support, OMICRON has, in my opinion, Europe / the Middle East / Africa
North and Latin America
support@omicron.at
techsupport@omicronusa.com or soporte.tecnico@omicronusa.com
Asia-Pacific
set the standard in the industry.“ Thank you very much for your service!
support@asia.omicron.at
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27
Region
Region
End to End Testing in
Egypt
RelaySimTest in operation
Ahmed & Sameh adjusting the CMGPS 588.
We were given an opportunity in Cairo which provided us with the challenge of conducting an End-to-End test using RelaySimTest during a brief shutdown of a 66 kV power line between two substations. The utility granted approval for a shut-
The engineers completed the test in good
down of a maximum of three hours to
time with satisfactory results for the line
complete the whole test. Two of our
differential relays
technical experts were located in substa-
(Siemens 7SD522).
tions 6 km apart. Sameh Eldmrdash led the
A full report
operation with support from Ahmed El
with an Arabic
Hamaky.
introduction was
The CMC at Ahmed’s location is connected to the relay. Line diff ere Creation date
circulated to all The test utilized two OMICRON CMC units
of the protection
(lent to us by our customers in Egypt), two
heads in the
CMGPS 588 units, an internet connection
ﺠﻬﺎﺯ ﺍﻟﻭﻗﺎﻴﻪ SIEMENS 7SD5
22…
Substation address:
Shorouk 1
Egyptian Ministry of Electricity.
tection
ﻣﺪﻳﻨﺘﻲ
2 ﻤﺪﺨﻞ
Bay addre ss:
CT 1
Direction towards: VT 1 Location at:
and the RelaySimTest software licences.
ntial pro
/ last modi fied: 201505-20 09:38 Created by: :50 OMICRON Execution Tester date: 201505-14 17:02 Executed :50 by: Same h Eldmrdash Executed: 8 of 8 Issues: 0 Passed: 8 Failed: 0 Overall asses sment: Passed Comment: Real test with Relay SimTest for between line differ Madinaty ential prote and Shoro ction SIEME uk 1 - 66KV NS 7SD5 ﻤﻴﻜﺮﻭﻥ ﻭ ﺍﻟﻤﺴﻤﻲ 22 ﺍﻧﺘﺎﺝ ﺷﺮﻛﻪ ﺃﻭ RelaySimTe ﻟﻤﺤﺎﻛﺎﻩ ﺍﻟﺠﺪﻴﺪ st ﺴﺘﺨﺪﺍﻡ ﺑﺮﻧﺎﻤﺞ ﺍ ﻓﻲ ﻭﻗﺖ ﻭﺍﺤﺪ ﺍ ﻧﻬﺎﻴﺘﻲ ﺍﻟﻜﺎﺑﻞ ﻃﺮﻴﻖ ﺍﻟﺤﻘﻥ ﻤﻥ ﺑﺎﻟﺘﺰﺍﻤﻥ ﻋﻥ ﻟﺘﻧﻔﻴﺬ ﺍﻻﺨﺘﺑﺎﺭ ﻙ ﻑ66 ﺠﻬﺪ ﺠﻲ ﺑﻲ ﺍﺱ 1 ﻭ ﺍﻟﺷﺮﻭﻖ ﺘﻜﻧﻭﻟﻭﺠﻴﺎ ﺍﻝ ﻤﺤﻃﺘﻲ ﻤﺪﻴﻧﺘﻲ ﻭ ﺑﺎﺴﺘﺨﺪﺍﻡ ﺍﻟﻭﺍﺻﻞ ﺑﻴﻥ ﺘﻔﺎﺿﻠﻴﻪ ﻋﻠﻲ ﺍﻟﻜﺎﺑﻞ ﻤﻧﻃﻘﺔ ﺍﻟﻘﺎﻫﺮﻩ ﺍﺨﺘﺑﺎﺭ ﺍﻟﻭﻗﺎﻴﻪ ﺍﻟ ﻭﺍﻟﺻﻴﺎﻧﻪ ﻤﻥ ﻤﻬﻧﺪﺴﻲ ﺍﻟﻭﻗﺎﻴﻪ ﺻﺤﺎﺭﻱ ﺠﺮﻭﺏ ﺤﺿﻭﺭ ﺍﻟﺴﺎﺪﻩ ﻤﺻﺮ ﺷﺮﻛﻪ ﺑ2015 ﻤﺎﻴﻭ ﺃﻭﻤﻴﻜﺮﻭﻥ ﻓﻲ 14 ﺍﻟﻤﻭﺍﻓﻖ ﻭﻛﻴﻞ ﻤﺑﻴﻌﺎﺖ ﺍﻟﺨﻤﻴﺱ:ﻻﺨﺘﺑﺎﺭ ﺍﻟﺠﻧﻭﺏ ﺑﺤﻠﻭﺍﻥ ﻭ ﺘﺎﺭﻴﺦ ﺍ ﻤﻌﻬﺪ ﺘﺪﺭﻴﺏ ﻛﺬﻟﻙ ﻤﻤﺜﻠﻲ ﺠﻬﺎﺯ ﺍﻟﻔﺤﺺ ﻭ 2 x CMC 356 2 x CMGP S 588
Circuit break er Breaker type: Trip time: Close time:
1,2000 kA : 1,0000 A Equipment 66,000 kV : 100,00 V Equipment
3-pole 50,000 ms 100,00 ms
Ahmed gives remote access to Sameh.
1
Cable voltage level
66 kV
Cable length
6 km (Madinaty – Shorouk1)
Protection
2 x Siemens 7SD522 line differential protection
CMCs used
2 x CMC 356 NET1-B (one at each side)
Accessories
2 x CMGPS 588 (one at each side)
Internet Access
2 x UMTS (one at each side)
Line Shutdown Period
9.00 am until 4.00 pm (actual working time was 1.30 pm to 4.00 pm) Sameh discussing the results (protection panel, containing the relays, in the background).
Magazine | Volume 6 Issue 2 2015
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28
Application
What’s on
Trade shows and conferences
November
December
GCC Power
Electricx
Jeddah | Saudi Arabia
Cairo | Egypt
02 November – 05 November 2015
06 December – 08 December 2015 www.electricxegypt.com
5th Iran International Electricity Exhibition (IEE) Tehran | Iran
For a complete list of OMICRON Events,
08 November – 11 November 2015
go to www.omicron.at/events
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