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大量分布式发电的并网运行将深刻影响现有配电网络的结构、以及配电网中短路电流的大小、流向及分布,由此给配电网的运行与控制带来多方面的影响。针对基于断路器的三段式电流保护、基于重合器等自动化电器的馈线保护以及基于FTU的配网自动化保护方案,探讨了分布式发电对配电网继电保护以及自动化的影响。
The grid-connected operation of a large amount of distributed generation will have a profound impact on the structure of the existing distribution network and the size, distribution and flow of short-circuit current in the distribution network, thereby bringing about various impacts on the operation and control of the distribution network. In view of three-phase current protection based on circuit breaker, feeder protection based on automatic appliances such as recloser, and FTU-based automatic protection scheme for distribution network, the influence of distributed generation on relay protection and automation in distribution network is discussed.