STUDY OF THE POWER PLANT OF LANAYE
UNIVERSITY OF LIEGE Laboratory of Hydraulic Constructions and Applied Hydrodynamics
Professors: André LEJEUNE and Michel PIROTTON
Researchers: Sébastien ERPICUM and Ioana TOPLICEANU
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
STUDY OF THE POWER PLANT OF LANAYE
1. Lock of Lanaye presentation 2. Set-up turbines study 3. Impact of the pumps/turbines action on the locks 4. Economical analysis
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
1. Lock of Lanaye presentation Location of Lanaye navigation lock Netherland
Albert Canal
Belgium
Germany
Lock of Lanaye
River Meuse
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
1. Lock of Lanaye presentation Recall of operations in a navigation lock
head
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
1. Lock of Lanaye presentation
Length:
22Om
Width:
25 m
Head :
13,6 m
e Riv
e eus M r
Albert Canal
New lock : the 4th one of the site
b Al
er
al n a tC
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
Belgium
e Riv
e us e rM
Netherland
1. Lock of Lanaye presentation Lay out of the site
nal a C er t Alb
euse M r e Riv
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
1. Lock of Lanaye presentation Maneuvering of the ships
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
2. Set-up turbines study Location of the hydro-power plant Axis of the hydro power plant in the side wall , between the 3rd and 4th lock
Canal t r e b l A
e Meus r e v i R University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
2. Set-up turbines study
1
1.
Forebay, intake, trash rack
2.
Intake channel
3.
Penstock
4.
Turbine
5.
Draftube
6.
Tailrace
Hydropower water way
2 3 Pumps
4 6 5 University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
2. Set-up turbines study
Turbines • 5 Kaplan turbines Types Flygt • Each turbine a power of 460 kW, • Total installed power 2,300 kW
Type of turbine
• Head 13,6 m Drawtubes and tail race
Cross section in the side wall
•Total nominal discharge 18 m³/s
Details Cross section in the penstocks
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
2. Set-up turbines study Others run of the river power plants along the River Meuse
• Existing ones • New one
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock
Restrictions: 9
the maximal flow : 17 m³/s for pumping and 18 m³/s for turbines action;
9
currents at the place of water evacuation and intake can’t block the entry/exit of the ships in the lock;
9
the flow velocity in the trash rack can’t exceed 50 cm/s because of the piscicultural consideration;
9
avoid the swirling effects on the evacuation and intake water, which have a negative influence on shipping.
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action
Pumps’ rejection Turbines’ intake
3.1 Upstream study-geometry Flow direction
Upstream head
Initial geometry
Numerical topography
Trash rack
Optimised geometry
Turbines’ intake Pumps’ rejection Flow direction
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock 3.1 Upstream study - pumping and locking Initial geometry Instantaneous module velocity (t = 225 s) (m/s)
Optimised geometry
Module velocity (turbulence effect) University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock 3.1 Upstream study - turbine action and locking Initial geometry Instantaneous module velocity (t = 225 s) (m/s)
Optimised geometry
Modulate velocity (t = 225s) (m/s) University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock 3.2 Downstream study Initial geometry Optimised geometry
Intake/rejection water
Downstream head of L4
Diverge section Flow direction
the possibilities of modifying are limited by the obstruction of the closed structures
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock 3.2 Downstream study
Initial geometry
Modules velocity (m/s) turbine action and locking
Optimised geometry
Modules velocity (m/s) pumping and locking University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
3. Impact of the pumps/turbines action on the lock 3.2 Downstream study Physical model: scale 1/23,33
2
3
4
5
Profil aval (C) - Cote 44,94
6 200
Qsas+turb - moy Qsas+turb - var Qsas+pomp - moy Qsas+pomp - var
180
140 Vitesses x (mm/s)
Velocities x (mm/s)
160
120 100 80 60 40 20 0 1
2
3
4 Points de mesure
Measurement points University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
5
6
7
4. Economical analysis 4.1 Economical indicators 9
Net Actualised Value (VAN) consists of bringing back to the beginning of the project all the monetary flow of the lifespan of the project, and finding the global value. n
Annual Cash Flow VAN = -I0 + ∑ t + (1 i) t =1 9
The Intern Profitability Rate shows the investment rate for which the Net Actual Value is equal to zero, like in the formula below:
I0 =
n
∑ t =1
Annual Cash Flow (1 + TIR) t
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
4. Economical analysis 4.2 Results Net Actualised Value evolution
VAN 50 years VAN 100 years
• the initial investment will be recovered during the 23rd year when the VAN becomes positive and the project has 100-years lifespan, and in the 24th year when the project has a 50-years lifespan;
35000000 30000000 25000000 20000000
VAN (euro)
15000000 10000000 5000000 0 0
10
20
30
40
50
60
70
80
90
100
-5000000
• the calculated Intern Profitability Rate is about 5,88% in both cases.
-10000000 -15000000 -20000000 Year
Net Actualised Value evolution for 50 and 100 years lifespan for the civil works/25 and 50 years for the electromechanical installations University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach
THANK YOU FOR YOUR ATTENTION!
University of Liège, Faculty of Applied Sciences Department of Applied Hydraulics and Applied Structures, http.//www.ulg.ac.be.hach