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| Optimal configuration of pumpedstorage in hybrid power system |
| (1. Institute of Electric Power, North China University of Water Conservancy and Electric Power, Zhengzhou, He′nan 450011, China; 2.College of Energy and Electrical Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 3. Patent Examination Cooperation Center of Sipo, Beijing 100091, China) |
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Abstract Since the capacity of hybrid power system is configured experientially at present causing a high cost and low reliability. the capacity of wind generator and PV arrays were optimized by using the particle swarm optimization method, while the capacity of pumpedstorage was optimized by means of the global optimization and local optimum methods. Firstly, the capacity of pumpedstorage is configured preliminarily according to the annual load, annual wind and solar energy resources etc; secondly, the capacity configuration is verified and adjusted based on the monthly load, monthly wind and solar energy resources; at last, the configuration is further improved with the typical daily load, daily wind and solar energy resources. For an isolated hybrid Wind-PV-pumped-storage-desalination system, the capacity of pumpedstorage was optimized with the global optimization and local optimum methods. The results showed that the preliminarily configured capacity of pumpedstorage is 120 kW by means of the annual data, but the capacity needs to be updated to 420 kW by considering required monthly loss of power supply probability in the verifying process. Further, because of the volatility of daily load, wind and solar energy resources, an extra loss of power supply probability still exists, thus a certain capacity of storage battery needs to be configured.
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Received: 18 October 2012
Published: 31 May 2013
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