摘要
阶段式电流保护常用于配电网继电保护中,但分布式电源接入配电网后,会改变其短路电流大小及方向,导致保护误动拒动等。以ETAP软件为平台搭建含光伏电源的10 kV配电网模型,研究一定容量的光伏电源接入后对传统电流速断保护及反时限过电流保护动作配合的影响,并在不改变原有保护方案的基础上,仿真并验证限制光伏电源接入容量的保护策略。
Stage current protection is commonly used in distribution network of relay protection.However,when the distributed power supply is connected to the distribution network,it will change the short-circuit current size and direction,resulting in the protection of misaled rejection and so on.Using ETAP software as a platform to build a 10 kV distribution network model with photovoltaic power supply,study the effect of a certain capacity photovoltaic power supply on the traditional current break protection and anti-time-time overcurrent protection action coordination.And on the basis of not changing the original protection scheme,simulate and verify the protection strategy of limiting the PV power supply access capacity on the basis of not changing the original protection scheme.
作者
柳想
王芳禄
LIU Xiang;WANG Fanglu(School of Information and Electrical Engineering,Shenyang Agricultural University,Shengyang 110866,China;State Grid Dandong Power Supply Company,Dandong Liaoning 118000,China)
出处
《农业科技与装备》
2020年第5期37-39,43,共4页
Agricultural Science & Technology and Equipment
关键词
光伏电源
ETAP软件
配电网保护
影响
photovoltaic generation
ETAP software
protection of distributed network
effect
