Pumped hydro Storage Plants
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1 Pumped hydro Storage Plants Olivier Teller, Product Director PSP 15 Nov 2012
2 PSP >130 GW (99% world electricity storage) Market: 6 GW/year Europe: ~1.5GW/year 100 years / illimited cycle numbers ~1000 /kw /kw
3 Possibilities of energy storage Storage Technologies Other Technologies CAES Pumped Hydro Technologies must correspond to power and capacity requirements Large Energy and Power - PSPs - CAES 100 MW 1000 MW Source:
4 PSP Global efficiency ~ 80 %
5 Pumped Storage Plants Storing electrical energy as potential energy of water
6 Portfolio 450 Output (MW) 400 Bailhanhe 195m Alqueva 71m 50 Nant de Drance 305m Linthal 613m Grand 1000 Maison 1200 La Rance 10m Head (m) 980m Solutions from 3 to 1200 m head
7 PSP key facts General Performances Reaction Time Ancillary Services 5 to 500 MW > 8 hours full load 10 to 2000 m. > 80% ~ 15 s. 25% to 100% 70% to 100% Output/Input Storage capacity Head Range Cycle efficiency 50% to 100% Generation Production adjustment range Pumping power adjustment range (Variable speed machines)
8 PSP global energy balance Transformer Motor Shaft line Pump G R I D 100% I N P U T S T O R A G E Turbine Shaft line Generator Transformer G R I D O U T P U T 80% 80% ~80% Global efficiency
9 PSP Key development drivers Thermal & Nuclear Fixed power production Match production & consumption Renewable Transmission Time Shift Firming Close to production Close to consumption Shift the excess production to provide the peaks Compensate non predicted power variation thanks to fast power adaptability Suppress peak from intermittent production Smoothen peak from consumption
10 Complement Intermittent Renewable Energy GW MW load Wind Production in Denmark in 2009 GW Forecast 4000 Generation h Time 3000 Shift Actual Generation 1min Regulation actual GW Jan Feb Mar Apr May Jun Jul Balancing Aug Sep Oct Nov Dec Intermittent source ENERGIENEK average (765 MW) Ramp Rate 1h
11 PSP development trends Continuous improvement More challenging sites In 40 years, from 70 to 80% cycle efficiency Availability, Reliability, Cycling Very High or Very Low Head (<50m & >800m) Head range increase Underground reservoir Sea water operation Flexibility Variable Speed offering Power range increase in turbine mode Reaction time reduction
12 Future in PSP 1200:00: :00:00 Unit :00: :00:00 Unit :00: :00:00 840:00: :00:00 720:00: :00:00 600:00: :00:00 480:00:00 960:00:00 360:00:00 720:00:00 240:00:00 480:00:00 120:00:00 240:00:00 0:00: % 23-31% 31-38% 38-46% 46-54% 54-62% 62-69% 69-77% 77-85% % Power range 0:00: % 23-31% 31-38% 38-46% 46-54% 54-62% 62-69% 69-77% 77-85% % Power range Flexibility Reliability Performance Power operating range Transition time Condition monitoring Fatigue analysis Round trip efficiency Cycling
13 Variable speed PSP Double Fed Asynchronous Motor Generator Advantages Adjustable pumping power Compatible with larger head variation Faster power adjustment Pump Turbine global efficiency (+ ~ 1%)
14 Power Demand Flexible Generation Wind energy Baseload (non flexible) Time
15 Power Excess wind Flexible Generation Demand Wind energy Baseload (non flexible) Time
16 European PSP installed Fleet Installed power 40,000 MW >30 year old by 2020: Huge opportunity for upgrade 30,000 MW 20,000 MW 10,000 MW Year Commissioning
17 PSP Flexible Hydro Storage Everywhere To enable Renewable Generation to remain Renewable
18
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Pumped Hydro Storage Plants Olivier Teller Grenoble 19 November 2014 Three main activities in four sectors Equipment & services for power generation Equipment & services for power transmission Alstom Thermal
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