摘要
分布式电源在配电网并网后会使配电网出现电压波动程度变大的问题,给配电网的安全稳定运行及分布式电源的发展带来了不良影响。首先分析了分布式电源的出力特性,然后对分布式电源并网造成配电网电压波动影响的原理进行了相应的理论分析,并在PSCAD/EMTDC中搭建了配电网电压波动仿真模型,对分布式电源在不同并网位置、不同并网容量和多分布式电源不同并网方式下配电网电压波动进行了相应的仿真计算,获得了不同并网情况下分布式电源对配电网电压波动的影响规律。
Increase of voltage fluctuation of the distribution network caused by connection of distributed generation to the network produces harmful effect to the safe,stable operation of the distribution network and to the development of distributed generation.Firstly,output characteristics of the distributed generation were analyzed.Then,the principle of influence produced by grid connection of distributed generation upon voltage fluctuation of the distribution network was analyzed theoretically,a simulation model was built for voltage fluctuation of the distribution network in PSCAD/EMTDC,and voltage fluctuations of the distribution network were calculated through simulation for different grid connection locations and different connection capacities and for different grid connection modes of multiple distributed generation.Finally,the laws of influence of distributed generation upon voltage fluctuation of the distribution network under different grid connection conditions were obtained.
作者
吕风仪
曾次玲
叶文浩
刘一科
杨东文
Lyu Fengyi;Zeng Ciling;Ye Wenhao;Liu Yike;Yang Dongwen(College of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha Hunan 410114, China;State Grid Hunan Electric Power Co., Ltd., Changsha Hunan 410004, China)
出处
《电气自动化》
2021年第1期81-84,共4页
Electrical Automation
