分层保护策略在微网保护中的研究  

Study on Layered Protection Strategy of Micro-Grid

作　　者：葛志超 吴献克 陈震宇 黄瑞特 南恒 GE Zhichao;WU Xianke;CHEN Zhenyu;HUANG Ruite;NAN Heng(Wenzhou Power Supply Company of State Grid Zhejiang Electric Power Co.,Ltd.,Wenzhou 325000,Zhejiang,China)

机构地区：[1]国网浙江省电力公司温州供电公司,浙江温州325000

出　　处：《电气传动自动化》2024年第6期53-57,共5页Electric Drive Automation

摘　　要：该文分析了分布式电源的接入对微网继电保护的影响,通过对现有微网保护方案的研究,讨论采用两层次的微网分层保护策略的可行性:第一层基于本线路信息的主保护,采用电流差动保护来保护微网中的馈线;第二层作为后备保护,采用基于全局信息的故障定位矩阵算法,该算法不仅可以保护微网中的母线,还可以保护微网中的馈线及末端线路。最后在PSCAD/EMTDC软件上进行微网模型建立及保护策略验证。This article analyzes the impact of the integration of distributed power sources on microgrid relay protection.Through the study of existing microgrid protection schemes,the feasibility of adopting a two-level microgrid layered protection strategy is discussed:the first layer is based on the main protection of the line information,using current differential protection to protect the feeders in the microgrid;The second layer serves as backup protection and adopts a fault location matrix algorithm based on global information.This algorithm can not only protect the busbars in the microgrid,but also protect the feeders and end lines in the microgrid.Finally,based on PSCAD/EMTDC simulation software,a microgrid model was established to verify the layered microgrid protection strategy.

关 键 词：微网 保护策略 电流差动保护 故障定位矩阵算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]