光伏并网对配电网继电保护的影响分析

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摘要光伏电源通过配电网并网发电,并网后的配电网会发生结构变化,造成电网中的潮流分布和短路电流发生改变,进而影响线路中继电保护设备的正常运行。本文研究了光伏电源接入后对线路中继电保护所产生的影响,通过仿真分析配电网中光伏电源不同容量和短路故障不同位置对电网短路电流所产生的影响,并进一步研究其对三段式电流保护的影响。

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	张姣
	杨帅

关键词 ：光伏电源, 继电保护, 配电网, 短路电流

Abstract：The photovoltaic power is usually generated by the distribution network, and the distribution network after the grid will change, which causes the power flow distribution and the short circuit current to change, and then affects the normal operation of the relay protection equipment in the line. The influence of photovoltaic power supply on the relay protection in the circuit is studied. The influence of the different capacity of the power supply and the different position of the short circuit fault on the short circuit current of the power grid is obtained by simulation, and the effect on the three stage current protection is further studied.

Key words： photovoltaic power supply relay protection distribution network short circuit current

收稿日期: 2018-07-05 出版日期: 2019-02-18

作者简介: 张姣（1989-）,女,本科,工程师,主要从事继电保护、工程管理工作。

引用本文:

张姣, 杨帅. 光伏并网对配电网继电保护的影响分析[J]. 电气技术, 2019, 20(2): 85-88. Zhang Jiao, Yang Shuai. Influence of photovoltaic grid connected on relay protection of distribution network. Electrical Engineering, 2019, 20(2): 85-88.

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http://dqjs.cesmedia.cn/CN/Y2019/V20/I2/85