摘要
分布式光伏大规模接入后,配电网故障电流特性与运行方式发生变化,导致传统继电保护配合方式面临选择性和协调性不足的问题。分析电力载波通信在分布式光伏接入条件下继电保护配合中的应用,重点从上下级保护动作协调、故障方向与区段判别、自适应保护配合3个方面展开研究。案例分析结果表明,电力载波通信能够有效支撑保护装置间信息交互,提升继电保护配合的可靠性与适应性。
After the large-scale access of distributed photovoltaic to the distribution network,the fault current characteristics and operation mode change,and the traditional relay protection cooperation method faces the problem of insufficient selectivity and coordination.This article analyzes the application of power carrier communication in the coordination of relay protection under the condition of distributed photovoltaic integration,and focuses on three aspects:coordination of upper and lower level protection actions,fault direction and section discrimination,and adaptive protection coordination.The case analysis results show that power carrier communication can effectively support the information interaction between protection devices and improve the reliability and adaptability of relay protection cooperation.
作者
施洁
严哲文
郭泽庆
SHI Jie;YAN Zhewen;GUO Zeqing(State Grid Zhejiang Electric Power Co.,Ltd.,Ningbo Power Supply Company,Ningbo 315000,China)
出处
《通信电源技术》
2026年第5期52-54,共3页
Telecom Power Technology
关键词
电力载波通信
配电网
继电保护配合
分布式光伏接入
power carrier communication
distribution network
coordination of relay protection
distributed photovoltaic connection
