摘要
分布式发电系统在微电网中的广泛应用可能会导致系统发生孤岛效应,不仅会损坏用电设备,而且威胁运维人员安全,因此必须对分布式发电系统采取保护措施,避免发生孤岛现象。通过介绍微电网孤岛运行典型结构和危害,全面分析了过/欠压和过/欠频检测法、电压相位突变检测法、电压谐波检测法、频率变化率检测法、电流幅值扰动法、主动频率偏移法、Sandia频移法、2N周期电流扰动法、滑动频率偏移法、自动移相法、阻抗检测法、谐波电压注入法以及远动技术等反孤岛检测策略。
The wide application of distributed generation system in microgrid may lead to the system isling effect,which will not only damage electrical equipment,but also threaten the safety of operation and maintenance personnel.Therefore,protection measures must be taken for distributed generation system to avoid the phenomenon of isling.This paper introduces the typical structure and hazard of microgrid island operation.And OVR/UVR、OFR/UFR、PJD、voltage harmonic detection method、ROCOF、current amplitude perturbation method、AFD、Sandia Frequency Shift、2N Periodic Current Perturbation、SMS、APS、impedance detection method,harmonic voltage injection method、remote technology and other anti-island-detection strategies are comprehensively analyzed.
作者
卢耀武
LU Yaowu(Guangdong Huiyuan Tong Group Co.,Ltd.,Foshan 528000,China)
出处
《通信电源技术》
2021年第8期38-41,46,共5页
Telecom Power Technology
关键词
分布式发电系统
微电网
孤岛效应
反孤岛检测策略
distributed generation system
micro-grid
islanding
anti-isling detection strategy
