Hydro Pumped Storage Power Plants perspectives in SEERC Region

Transcription

1 Hydro Pumped Storage Power Plants perspectives in SEERC Region Tomislav Plavšić, PhD. HRO CIGRE SC C2 HOPS Croatian Transmission System Operator Ltd.

2 CONTENT 1. EU Energy Policy and Internal Electricity Market Development what is happening today, and where is it going to!? 2. Wind integration experiences in Croatia can we survive the future? 3. Energy Storage Technologies where to invest? 4. HPSPP perspectives in SEERC Region what measures and incentives should be applied?

3 EU ENERGY POLICY Source: DG ENER, European Commission

4 EU ELECTRICITY GENERATION INSTALLED CAPACITY NET CHANGE, [MW] Source: EWEA

5 MONTHLY ELECTRICITY SPOT PRICES Central West Europe Source: DG ENER, European Commission

6 NEGATIVE ELECTRICITY SPOT PRICES Source: Fraunhofer ISE More Than 90% Renewable Energy in Germany on 8 May :45, Negative Prices Down to -178 EUR/MWh

7 INFLUENCE OF WIND POWER ON POWER CONTROL MARGIN AT NIGHT Source: Prospects for Large-Scale Energy Storage in Decarbonised Power Grids, OECD/IEA 2009

8 WIND POWER CURTAILMENT

9 FREQUENCY DEVIATIONS IN EUROPEAN INTERCONNECTED POWER SYSTEM

10 EU ROADMAP FOR MOVING TO A LOW CARBON ECONOMY IN 2050 Source: European Commission

11 MAIN FEATURES OF THE CROATIAN POWER SYSTEM (2015) Peak load 3009 MW Total demand 16.8 TWh HE TE 59,4 % 5.466,103 GWh 33,3 % 3.058,958 GWh Total net generation delivered to transmission grid Voltage level (kv) 400 Circuit lenght (km) TWh Generation mix: 4762 MW HPPs, TPPs (gas, coal, oil), other RES (mainly wind) Substations (number) VE 7,3 % 672,395 GWh 110 MV TOTAL

12 WIND POWER PLANTS IN CROATIA In Croatia there are 16 Wind Power Plants (WPP) with total installed capacity of 428,15 MW Most of WPP are connected to 110 kv voltage level, while the rest are connected to the mid-voltage distribution network (35, 30 and 10 kv).

13 LOCATIONS OF WIND POWER PLANTS Almost all WPPs are located in the Southern Croatia- region Dalmatia, WPP integration in Croatia is specific for its low geographical dispersion. The largest distance between two WPPs is about 300 km, while 13 out of 16 WPPs, with 75% of total WPP installed capacity, are located in the area with similar wind climate. Along with significant wind variability, this facts strongly affect WPP output variability as well as power system control in general.

14 REALIZED WIND POWER PLANT GENERATION Total WPP generation in 2015 was GWh. Maximum hourly output was MWh and it was realized on at 18 h, while minimum output was 0 MWh on at 19 h. Hourly production higher than 300 MWh ocurred in 29 hours.

15 COMPARISON BETWEEN HOURLY SYSTEM DEMAND AND WPP GENERATION WPPs have an increasing role in covering power system demand in Croatia. In 2015 share was ranging from 0% to 23.8% ( at 4 h), while it was larger than 15% in 274 hours.

16 ELECTRICAL STORAGE SYSTEMS Electrical storage systems (ESS) have been in use since beggining of 20th century, mostly for energy management and UPS purposes, Recent developments in ESS have brought many promising technologies that range from UPS applications, to grid support and energy management, Transmission System Operators are interested in ESS development because of ESS capabilities in relieving grid congestions, frequency control and providing control power for management of intermittent energy sources such as wind, HPSPPs are still the only mature enough ESS techology, others are in the stage of research, development and initial deployment.

17 ENERGY STORAGE SYSTEMS COMPARISON Technology Power Efficiency (%) Lifetime Pumped Hydro CAES Compressed Air Energy Storage 250 MW > 1 GW Total capital cost (USD/kW) years MW years Ultra capacitors 10 MW 90 > cycles SMES - Superconducting Magnetic Energy Storage 1 3 MW 90 > cycles NaS Batteries 35 MW years Li Ion Batteries 5 MW years Fe/Cr Flow Batteries < 10 MW years Source: Prospects for Large-Scale Energy Storage in Decarbonised Power Grids, OECD/IEA 2009

18 ENERGY STORAGE SYSTEMS COMPARISON POWER vs ENERGY

19 WORLDWIDE INSTALLED STORAGE CAPACITIES FOR ELECTRICAL ENERGY

20 HPSPP PERSPECTIVES IN SEERC REGION HPSPP market position has been jeopardized by low electricity prices and small peak off peak electricity price differences, Lack of positive market signals can stop the development of new HPSPP projects, and prevent the existing HPSPPs in achieving expected financial goals, Existing and future RES integration needs control power and energy storage facilities, creating thus a new perspective for HPSPPs in SEERC Region, but also on EU level. Source: EPEX SPot

21 INTEGRATION OF WIND POWER IN SEE Source: EWEA

22 DIRECTIONS FOR SEERC REGION Large-scale integration of highly intermittent renewable energy sources must not jeopardize secure power system operation, Frequency control, system inertia and energy storage possibilities are key aspects of future safe power system operation in lowcarbon environment, Government policies should establish an adequate framework for enabling the investments in power production facilities for frequency control and electrical energy storage facilities, HPSPPs can provide an answer to future power system operational needs.

23 THANK YOU FOR YOUR ATTENTION!