/ES2_Topliceanu_Lejeune

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