With the rapid growth of electricity load in the distribution network,the problems of insufficient reactive power ca-pacity and voltage quality degradation have become increasingly prominent.Therefore,this paper proposes a reactive power and voltage control strategy for the distribution network with distributed power generation,and constructs a reactive power optimi-zation model with the minimum cost of active network loss and node voltage deviation.The model makes full use of the re-sponse speed characteristics of photovoltaic inverters,reactive power compensation devices and energy storage devices to achieve day-ahead reactive power and voltage control,and solves the target variables through a two-stage optimization method.With the goal of minimizing network loss,the network reconfiguration results in one day are solved.The hourly state quantities of photovoltaic inverters,static reactive power compensators and energy storage devices are solved.The effectiveness and econ-omy of the proposed method are verified in the IEEE33 node system.
关键词
低压配电网/无功补偿/经济效益/电压质量/两阶段优化
Key words
low voltage distribution network/reactive power compensation/economic benefit/voltage quality/two-stage opti-mization
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