Effects of distributed generation interconnections on voltage of distribution system

Min Fu, Yuxin Xue, Cang Ge
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引用次数: 8

Abstract

Application of distributed generation to supply the demand of a diverse customer base has been gaining popularity. There will have a great impact current when distributed generation parallel to power grid, and the impact current have a significant effect on distribution system. According to the radial distribution system, the simulation model of distribution system which contains distributed generation was founded and the effects of impact current on voltage of distribution system were deeply studied in this paper. The results show that the voltage of distribution system will fluctuating follow impact current and maybe beyond the lower limit of safe operation. So the effects of distributed generation interconnections on voltage of distribution system should be considered when planning distributed generation and the margin of feeder voltage should be improved.
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分布式发电互联对配电系统电压的影响
应用分布式发电来满足不同客户群的需求已经越来越受欢迎。分布式发电并网时会产生很大的冲击电流,冲击电流对配电系统的影响很大。针对径向配电系统,建立了包含分布式发电的配电系统仿真模型,深入研究了冲击电流对配电系统电压的影响。结果表明,配电系统电压随冲击电流波动,可能超出安全运行下限。因此,在规划分布式发电时应考虑分布式发电并网对配电网电压的影响,提高馈线电压裕度。
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