分布式电源对配电网继电保护的影响分析

Analysis of the Impact on Relay Protection of Distributed Generation in Distribution System

分布式电源(Distributed Generation)的接入可以充分利用可再生能源,增加电网运行的可靠性和灵活性,但是分布式电源接入网络后,对电力系统的运行、规划及继电保护等也提出了新的挑战。系统的接线结构由单电源变为双电源或多电源,保护装置会发生拒动和误动。将搭建基于仿真软件PSCAD/EMTDC的仿真模型,对具体影响进行分析并提出相应的改进措施。

The access of distributed power can take advantage of renewable energy,increase power grid reliability and flexibility,however,it also presented new challenges to the operation,planning and protection of the power system.System The wiring structure of the system changes from a single power supply or multiple supplies,the protection device malfunction occurred and refused to move.This article will build simulation model in simulation software PSCAD /EMTDC to analyze the impact of specific and propose relevant measures for improvement.