基于电压扰动的微电网加速保护策略研究  

Based on the Micro-grid Voltage Disturbance Acceleration Protection Strategy

作　　者：翟兆江[1] 

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《科技视界》2017年第3期5-6,8,共3页Science & Technology Vision

摘　　要：针对传统配电网保护以及目前常用的几种微电网保护在微电网应用中的局限性,提出一种基于电压扰动的反时限加速保护策略。该保护是根据分布式电源输出电压发生扰动的情况来判断微电网内部是否发生故障,以及发生故障的类型和位置,同时利用MATLAB对该保护进行仿真分析,其仿真结果验证了它不仅能够保证故障时保护的可靠性,选择性和速动性,而且适用于微电网并网运行和孤岛运行2种状态,具有一定的参考和实用价值。View to limitations on the applications in micro-grid of tradition distribution network protection and currently used several micro-grid protections,lt proposed an accelerated protection strategy based on voltage disturbance acceleration.The protection is based on the voltage disturbance of distributed power to determine whether the internal micro-grid faults, as well as the type and location of failure,and uses MATLAB to simulate and analyses,the results verify that it is not only able to guarantee the reliability,selectivity and speed of protection,but also for micro-grid in netconnected and islanded operation,with .some reference and practical value.

关 键 词：扰动电压 微电网 并网运行 孤岛运行 MATLAB 

分 类 号：TM714[电气工程—电力系统及自动化]