Abstract：To solve the problems of power fluctuation and transient voltage support capability under fault conditions for intermittent energy penetrated power system, wind-photovoltaic-energy storage(Wind-PV-ES) hybrid power system modelling and control method that effectively smooth up power fluctuation and improve the low voltage ride through(LVRT) capability is proposed. The double-loop control strategy of current and voltage is adopted for wind system and photovoltaic system. Power control reference commands of energy storage system are provided by comparing the specified value and measured value of voltage and frequency, respectively. Power fluctuation is smoothed up and fault transient voltage is improved by power and current controller of energy storage system. The model’s contribution to power fluctuation and transient voltage stability enhancement are analyzed by power system simulation containing wind system, photovoltaic system and energy storage system. Extensive simulation results are presented and analyzed to validate that the proposed simulation model and control strategy are effective for smoothing transient power fluctuations, ensuring low voltage ride through capability and the security of the grid.
蔡国伟, 孔令国, 潘超, 杨德友, 孙正龙. 风光储联合发电系统的建模及并网控制策略[J]. 电工技术学报, 2013, 28(9): 196-204.
Cai Guowei, Kong Lingguo, Pan Chao, Yang Deyou, Sun Zhenglong. System Modeling of Wind-PV-ES Hybrid Power System and Its Control Strategy for Grid-Connected. Transactions of China Electrotechnical Society, 2013, 28(9): 196-204.
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2013, Vol. 28 
