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电网技术  2009 

分布式发电对配电网线路保护影响的分析

, PP. 104-107

Keywords: 分布式电源(DG),配电网,线路保护,重合闸,接入位置

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Abstract:

为了分析分布式电源(distributedgeneration,DG)接入线路对重合闸和配电网线路保护的影响,以DG通过10kV线路并入配电网为例,考虑到DG接入容量较小、在配电网中接入位置不确定以及一次重合闸与DG的配合等问题,结合DG并网时电网拓扑,利用短路电流计算公式计算了电流的流向和大小,分析了DG在线路不同位置接入对配电网线路保护和重合闸的影响,指出在线路或系统出现任何形式的故障均快速无选择地切除DG的前提下,DG不会对原线路保护产生负面影响,无需更改原有线路保护的整定值。

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