Smart Grids
Distribution Transformers Monitoring Solution
Smart Sensors | Condition Monitoring | Asset Management
INCREASE NETWORK RELIABILITY Predictive Maintenance �
The system detects fuse blowing out in real-time
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Longer effective life of the transformer
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Better Quality of Service (Less Equipment Damage, quicker intervention)
REDUCED OUTAGE DURATION �
The system detects fault conditions and provides the respective remote early warning
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Alarm messages include the exact location and the component in distribution substation
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Enable faster repair of faults, reducing SAIDI and CAIDI impact
OPTIMIZED MAINTENANCE �
Maintenance staff, having received alarms with the fault condition, can organize themselves in order to get quickly to the location, with the appropriate parts and tools, cutting the troubleshooting time
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Maintenance staff can use the predictive character of this system to schedule repairs
Being located close to energy end-users, Secondary Distribution Substations (SDS) are relatively simple equipment that always exist in large numbers, spreading throughout the territory. In order to fight both the rapid installation decay and the more recent wave of copper burglary that affects electrical utilities across the world, resorting to remote condition monitoring is a key solution, thus providing real-time monitoring, assessment, and remote communication of a number of status conditions in secondary distribution substations, so as to improve maintenance criteria and operational control, yet at reduced costs.
Eneida’s system provides both alarm and warning messages to staff in charge, corresponding to instant detection of appliance failures, as single events, as much as early warning of probable future malfunctions, from trends analysis of slow varying analogue data. Thus, allowing faster and more reliable condition diagnosis of Secondary Distribution Substations in a grid and, therefore, accurate and timely responses whenever required, the present solution is part of a broader sophisticated framework of asset management, with gains in operation efficiency, power availability and overall quality of service.
in advance �
Lower Operational & Maintenance Costs
ENERGY EFFICIENCY �
Reduction of Technical Losses
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Output currents balance monitoring allows a better distribution of the electrical loads supplied by transformer
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Optimized Transformer operation conditions
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Lower Energy losses due to excessive temperature of the transformer
Eneida’s Distribution Transformers Monitoring Solution Eneida provides a smart condition monitoring solution of secondary distribution substations based on an innovative distributed platform integrating smart sensors over wireless networks. It is a cost effective solution, modular, reliable and simple to install that enables the utility to remotely manage and optimize its assets through the use of advanced analytics and warnings, while minimizing outages, increasing network reliability and optimizing maintenance.
System Overview This solution consists of a fully modular platform that encompasses a number of different, independent and selfcontained smart devices which, being adequately located throughout a substation, are functionally integrated by a higher level unit over a wireless network. This single controller unit in a substation – a mix of a PLC-type machine, Web server, and telecommunication node of a WAN-IP network (over GPRS) – acts primarily as data collector from a number of sensors representing the status and condition of different devices. As depicted, besides acting locally as node of a lowpower, short-range wireless network (WPAN), this integrating unit has a role as gateway to the upper levels in the overall information system, for database maintenance, condition assessment, and alarm issuing. Functionally, this system addresses the condition monitoring and diagnosis of electric components and, in accordance with the constructive type of secondary distribution substation – whether it is cabin, underground or pole-type, the intrinsic safety evaluation and the prompt detection of impending security risks of the whole of substation premises, as follows: �
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Transformer: vibration pattern and temperature taken at the top lid, with a non-intrusive sensor, thus detecting both mechanical and thermal deviations from standard normal behavior; Switchboard: status information on all existing fuses, and realtime fuse blow-out detection; Switchboard: data acquisition of RMS current and voltage flowing at each and every output LV single-phase circuit; Environmental safety: data acquisition of both temperature and relative humidity in the air, thus leading to abilities of fire detection and ventilation malfunction diagnosis; Environmental safety: flood detection and water pump malfunction diagnosis and alarms; Intrusion alarm: prompt detection of intrusion through doors and ventilation grilles; Transformer attempted theft: prompt detection of transformer removal; Partial discharges: detection and monitoring of partial discharges inside of SDS; LV line monitoring: data acquisition of RMS current and voltage flowing at each and every LV single-phase circuit.
Solution Building Blocks Sensors
EWS DGTP2-i The EWS DTGPT2-i is a smart device to interface between the DGPT2 device and the unit control unit
EWS DTH2O The EWS DTH2O is a smart sensor device for the detection of water in industrial and energy facilities and capable of measuring, in cable version, up to 5 levels from the base of the sensor.
EWS DTT The EWS DTT is a robust, non-invasive, self-contained, smart sensor device for real-time, continuous and remote measurement of the transformer temperature.
EWS DTTI-reh The EWS DTTI-reh is a non-invasive, wireless smart sensor for the measurement of electric current at LV single-phase circuits, typically in Secondary Distribution Substations (SDS), and, thereafter, throughout LV distribution cabling
EWS DTPump The EWS DTPump is a self-contained smart sensor and actuator device for remote and real-time monitoring, evaluation, test and control of an automatic water pump (like, for example, the ones operating in underground Distribution Transformers Substations, DTs).
EWS DTPD The EWS DTPD is a non-invasive, wireless smart sensor for detection and monitoring of partial discharges in a Secondary Distribution Substations (SDS).
EWS DTF EWS DTF is a noninvasive, wireless smart sensor that allows faster diagnostic and remote alarm about the fuse status at LV single-phase circuits, typically in Secondary Distribution Substations (SDS).
EWS DTP The EWS DTP is a small compact and robust smart proximity sensor. It allows detection of opening/closing of doors and windows, and of the presence of equipment that could be removed, eg. transformers in distribution transformer substations (DTs), thus detecting and communicating intrusions and potential robberies in critical facilities.
EWS DTP-g The EWS DTP-g is a self-contained smart proximity sensor, with energy back-up. It allows real-time detection of intrusion or theft of assets and its communication over GSM/GPRS protocol. It includes also a GPS Module that can be used to locate the monitored asset.
EWS DTV-reh The EWS DTV-reh is a non-invasive, wireless smart sensor for the measurement of Voltage at LV singlephase circuits, typically in Secondary Distribution Substations (SDS), and, thereafter, throughout LV distribution cabling.
EWS DTHT The EWS DTHT is a robust, self-contained, smart sensor device for real-time, continuous and remote measurement of the environment conditions, such as temperature and humidity.
Sensor Network Gateway
System Software
EWS G2G4-gpwr, EWS G433M-gpwr The EWS G2G4gpwr is a wireless communications device, operating over one of the most common frequency bands and protocols in the energy sector, ZigBee. It doubles as gateway, bridging TCP/ IP networks over GPRS communications and, also, as message router throughout a wireless PAN network. Thus, this type of unit allows users to easily access data collected by a number of scattered data acquisition devices, as well as issue commands to be remotely carried out at other devices across an industrial rig. This gateway may be configured over SMS or GPRS.
The system software is a secure customized HMI interface. It manages all the applications, configuration, set-up and maintenance of the system. It is the only operator interface that the customer needs to run the system. Software manages the system, stores/displays the data, and provides the operator with the actionable intelligence required to optimize its assets.
EWS G433M-gpwr The EWS G433Mgpwr is a wireless communications device, operating over the ‘free’ frequency bands of ISM 433 MHz and GSM/GPRS communication. This device is a versatile wireless smart router, with adaptive software and memory buffers deep enough to provide the degree of data contention that is adequate to each and every application case, allowing for the differences concerning both message format and data rate communication in the different networks. EWS G2G4M-mpwr, EWS G433M-mpwr The EWS G433M-gpwr is a wireless and cabled communications device, operating over the ‘free’ frequency bands of ISM 433 MHz and modbus communication. This device is a versatile smart router, with adaptive software and memory buffers deep enough to provide the degree of data contention that is adequate to each and every application case, allowing for the differences concerning both message format and data rate communication in the different networks.
Maintenance and Modifications Key equipment performance is tracked by the system software, and new equipment can be added very simply and quickly. The system has been designed to give the customer full control of maintenance, configuration and set-up. All inputs are menu driven and require minimal staff training.
Communications
Fault Notifications
The communications structure has been made as simple as possible. Communications are performed through a gateway (EWS G2G4gpwr, EWS G433M-gpwr or EWS G433M-mpwr) that allows two-way communications between the central server and sensors installed at secondary distribution substations. The communication between gateway and central server is over GPRS (or Modbus when the SDS have a RTU installed that communicates over this protocol) and between sensors and gateway is over 2.4 GHz (Zigbee) or ISM 433Mhz radio.
Notifications are the key to mobilizing repair teams, and having this facility means that valuable outage time is saved: � Better maintenance planning; � Rapid notification of faults, rather than waiting for customer notification; � Knowing where in the network the fault has occurred so that the teams will go directly to the fault site and have the correct equipment on hand.
These devices are a versatile wireless smart routers, with adaptive software and memory buffers deep enough to provide the degree of data contention that is adequate to each and every application case, allowing for the differences concerning both message format and data rate communication in the different networks. Thus, this type of unit allows users to easily access data collected by a number of scattered data acquisition devices, as well as issue commands to be remotely carried out at other devices across an industrial rig. Data receiving and reporting intervals are programmable in the system console at selectable intervals of 1 minute.
The example below is a typical fault notification that describes: � Time and Date; � Secondary Substation; � Location; � Type of Fault.
Technical Specifications
EWS DTTI
EWS DTMVTI
EWS DTF
EWS DTHT
EWS DTH20
EWS DTPump
12V - 24Vdc, 0,6 W max.
12Vdc to 24Vdc
12Vdc to 24Vdc
24Vdc
31 mA @ 24Vdc maximum
43 mA @ 24Vdc maximum
100 mA @ 24Vdc maximum
Electrical Power Supply
energy harvesting (induction and storage (5F supercapacitor)
Power Consumption Battery Backup Line Voltage Range Environmental Operating Temperature
-10ºC to +55ºC
-10ºC to +55ºC
-20ºC to +85ºC
-20ºC to +85ºC
-20ºC to +85ºC
Operating Humidity
Up to 85º, noncondensing
Up to 100º, noncondensing
Up to 100º, noncondensing
Up to 100º
Up to 100º, noncondensing
Housing
ABS
AlSi12
AlSi12
AlSi12
IP Rating
IP 40
IP 65
IP 66
IP 66
DIN-rail
Screw Mounting (optional socket)
Screw Mounting
Screw Mounting (optional socket)
86.2 x 101.5 x 57.0
205 x 184 x 63
50 x 60 x 40 (without Plug) 50 x 160 x 40 (with Plug)
79 x 150 x 68 (without Plug) 179 x 150 x 68 (with Plug)
100x159x86 (without Plug) 100 x 259 x 86 (with Plug)
reh, r2eh
ModBus RTU
r, r2, RS-485
r, r2, RS-485
r, r2, RS-485
up to 100% RH
1,5 to 40 mm of water
0-15A / 230V
MECHANICAL
Ø split-core CT
22 mm or 28 mm, maximum
Mounting Options Dimensions (WxHxD), mm
Weight, g COMMUNICATION Protocol Range
200 m@ +10 dBm, in open field
Security Data transmission rate Data refreshing rate
115 kbps Multiple of 5 minutes
CERTIFICATION ISO
Manufactured under an ISO9001 registered program
CE DATA Data Type
True RMS current
Range Resolution Accuracy Data acquisition rate
0.1 A
0,04%
0.1 A
Better than ± 1%
± 5%
5%
Multiple of 1 minute
Technical Specifications
EWS DTT
EWS DTPD
EWS DTV
EWS DTP
EWS DTA3T
EWS DTP-g
Electrical Power Supply
12Vdc to 24Vdc
5Vdc ± 5%
Power Consumption
600 mA @ 5Vdc maximum
Battery Backup Line Voltage Range Environmental Operating Temperature
-20ºC to +85ºC
-20ºC to +70ºC
-10ºC to +55ºC (discharge) 0ºC to +40ºC (charge)
Up to 100º
Up to 100%
Up to 100%
Housing
AlSi12
Anodized Aluminium 6082 T6
ABS
IP Rating
IP 66
IP67
IP 65
Operating Humidity MECHANICAL
Ø split-core CT Mounting Options Dimensions (WxHxD), mm
Screw Mounting
M8 Adapters
50 x 60 x 40 (without Plug) 50 x 160 x 40 (with Plug)
c/c2/ cEx - 38 x 60 r/reh - 50 x 75
Weight, g
130 x 105 x 55
270
COMMUNICATION Protocol
r, r2, RS-485
GSM / GPRS
Range Security Data transmission rate Data refreshing rate CERTIFICATION ISO CE
IEC 61131-2, CE IES 60079, Ex nA
DATA Data Type Range
Resolution Accuracy Data acquisition rate
0 to 1 cm (with Assemtech CTI302M)
0 to 1
About eneida Wireless & Sensors eneida® Wireless & Sensors designs, develops and delivers robust Smart Sensors and Industrial Wireless Networks, certified and tested for operating in the aggressive environments of the electric utilities and large process industries (Oil+Gas & Chemicals, Mining & Metals), providing real-time, continuous and reliable visibility, monitoring and control of assets, people and environments. As such, eneida® offers Smart Sensors Networks that allow the electric utilities to, efficiently and continuously, monitor the condition of Distribution Transformers and the critical assets of their Power Substations (Transformers, Circuit Breakers, HV Isolators and DC Systems). eneida® solutions allow the Transmission and Distribution Network Operators to have significant improvements in terms of Quality of Service, Maintenance Productivity, Effective Life of the Equipments, Energy Efficiency, Security and Environmental Risks Reduction (flooding, fire). Based on their technology, eneida® also offers to the Large Process Industries (Oil+Gas & Chemicals, Mining & Metals), robust and efficient Assets & People Tracking Systems, Fleet Traffic Management Solutions and Assets (Motors, Vehicles, Fuel) On-line Monitoring.
EdifĂcio IPN, Rua Pedro Nunes :: 3030-199 Coimbra :: Portugal tel +351 239 111 180 :: fax +351 239 100 020 :: www.eneida.pt :: marketing@eneida.pt Portugal :: Spain :: UK :: Oman :: Qatar :: Kuwait :: UAE :: Mozambique :: Angola