Centre d’Ingénierie Hydraulique

Power for the MerseyLiverpoolUnited Kingdom2009-2011

Antoine LIBAUX

05/05/2014

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Design Advisory Group Meeting4 March 2011

Mersey Tidal Power

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Mersey Estuary� Mean tidal range: 6.5m

� Basin area: 61km2

� Previous studies in the 1980’s (Mersey Barrage Company report in 1993: 700MW barrage)

In 2006 Peel Environmental Ltd and the North West R egional Development Agency (NWRDA) launched a pre-feasibili ty study –phase 1 (Consortium of consultants led by Bruno Hap pold + RSK + Univ. Liverpool)

Report issued in Sept. 07

Mersey Tidal PowerMersey estuary

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In 2009 Peel Energy Ltd and the NWRDA launched a fe asibility study Phase 2 (Consortium of consultants led by Sco tt Wilson + EDF + Drivers Jonas)

Mersey Tidal Power Project

Stage 1 OptionsReport issued in

Feb. 2010http://www.merseytidalpower.co.uk

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THE MERSEY BARRAGE

OPTION A1.02

GENERAL ARRANGEMENT (28 UNITS)

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A1.02b

A2.02aLOW SPRING TIDE

LOW SPRING TIDE

Inter Tidal Exposure

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GENERAL TOPICS ABOUT UNITS

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General topics about units

noneStage 1

Tidal Stream Turbine

SMEC by Verderg

Tidal Barrages in Band A and B, conventional Bulb unit of large diameter, hydromatrix, eco-Bulb (all in direct quadrant only)

- gross analytical functions giving approximate Q(H) and Pe(H) curves

Stage 2

Stage 3 La Rance hill chart smoothing, interpolation and transposition to get conventional reversible Bulb unit of larger diameter

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CONVENTIONAL BULB UNIT

La Rance Neyrpic Alstom reversible Bulb� 10 MW, RD 5.35 m, 93.75 rpm

� original hill chart

Operating path� In Direct Turbining Quadrant

� In Reverse Turbining Quadrant

Transposition to� 25 MW, 8 m, 62.5 rpm

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BULB TURBINE (1/2)

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BULB TURBINE (2/2)

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ROLLS ROYCE NEW TECHNOLOGY

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LINE A: TIDES AT ALFRED DOCK (YEAR 2010)

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OBJECTIVES

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0-D MODEL SOFTWARE DEVELOPMENT FOR STAGE 3

Pumping

Control (turbines, gates)

Ebb and Flood• Sluice gates operation in parallel to generation

Identification method (0D / 2D)

Bulb units hill chart analysis

Tidal analysis

www.merseytidalpower.co.uk

COMPARISON BETWEEN 0-D AND 2-D MODELS

� A1.02b: ebb generation only with low tide sluicing

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A1.02B - GENERAL VIEW

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/08-10

-5

0

5

10Comparison between 2-D and 0-D models (1) - GENERAL VIEW - Sea and Estuary basin Levels

mO

D

2010

2-D Sea level(T)

2-D Sea Level(S)

2-D Estuary Level(T)

2-D Basin level(S)

0-D Sea Level

0-D Estuary level

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/08-2

-1

0

1

2x 104 Total Discharge Turbines & Sluices

m3 /s

2010

2-D(T)

2-D(S)

0-D(T)

0-D(S)

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A1.02B - TURBINES

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/080

5

10Comparison between 2-D and 0-D models (2) - TURBINES IN EBB GENERATION - Gross head

m.w

.c.

2010

2-D

0-D

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/080

1

2x 104 Discharge, m

m3 /s

2010

2-D

0-D

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/080

500

1000Electric power

MW

e

2010

2-D

0-D

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A1.02B – LEVELS AND TOTAL DISCHARGES

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/08-10

-5

0

5

10Comparison between 2-D and 0-D models (3) - SLUICE GATES AND ORIFICE MODE - Sea and Estuary basin Levels

mO

D

2010

2-D Sea Level

2-D Basin level

0-D Sea Level

0-D Estuary level

04/08 05/08 06/08 07/08 08/08 09/08 10/08 11/08 12/08 13/08 14/08-3

-2

-1

0

1

2x 104 Total Discharge Turbines & Sluices

m3 /s

2010

2-D

0-D

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A1.02B – LOW TIDES – LEVELS AND TOTAL DISCHARGES

06:00 12:00 18:00 00:00 06:00 12:00 18:00

-2

0

2

Comparison between 2-D and 0-D models (3) - SLUICE GATES AND ORIFICE MODE - Sea and Estuary basin Levelsm

OD

05/08/2010

2-D Sea Level

2-D Basin level

0-D Sea Level

0-D Estuary level

06:00 12:00 18:00 00:00 06:00 12:00 18:00-2

-1

0

1

2x 104 Total Discharge Turbines & Sluices

m3 /s

05/08/2010

2-D

0-D

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A1.02B – HIGH TIDES - TURBINES

06:00 12:00 18:00 00:00 06:000

2

4

6

Comparison between 2-D and 0-D models (2) - TURBINES IN EBB GENERATION - Gross headm

.w.c

.

10/08/2010

2-D

0-D

06:00 12:00 18:00 00:00 06:000

1

2x 104 Discharge, m

m3 /s

10/08/2010

2-D

0-D

06:00 12:00 18:00 00:00 06:000

500

1000Electric power

MW

e

10/08/2010

2-D

0-D

Merci de votre attention