逆变型分布式电源接入对就地型馈线保护的影响分析  

Research on the Effect of IIDG on Local Feeder Protection

作　　者：邓景松 王英民 孙迪飞 郑晨玲 晏寒婷 高小镜 DENG Jingsong;WANG Yingmin;SUN Difei;ZHENG Chenling;YAN Hanting;GAO Xiaojing(Guangdong Power Grid Co.,Ltd.,Huizhou Power Bureau,Huizhou 516003,Guangdong Province,China;Guangzhou Power Electrical Technology Co.Ltd,Guangzhou 510640,Guangdong Province,China)

机构地区：[1]广东电网有限责任公司惠州供电局,广东省惠州市516003 [2]广州市奔流电力科技有限公司,广东省广州市510640

出　　处：《发电技术》2021年第1期115-121,共7页Power Generation Technology

基　　金：广东电网有限责任公司科技项目(031300KK52160020)。

摘　　要：逆变型分布式电源(inverter interfaced distriuted generation,IIDG)因在经济效益和环境效益上的突出表现,在配电网中得到广泛应用。IIDG的接入使得配电网变成一个多电源供电的复杂网络,潮流的双向流动可能导致基于单向潮流设计的馈线自动化性能下降,无法及时隔离故障、恢复供电。针对目前应用在架空线路上的2种典型馈线自动化实现模式:电压时间型馈线自动化和电流级差型馈线自动化,分别论述其工作原理,再结合IIDG的工作方式,详细分析了IIDG接入对在各馈线自动化模式下实现故障隔离以及非故障区域供电动作逻辑的影响,提出减小IIDG影响的解决方案,最后对其进行仿真验证。Because of its outstanding performance in economic benefit and environmental benefit,the inverter interfaced distributed generation(IIDG)has been widely used in distribution network.The access of IIDG makes the distribution network a complex network of multi-power supply,the bidirectional power flow may lead to the degradation of feeder automation performance based on undirectional power flow,and it is imposssible to isolate faults in time.Aiming at two typical application on overhead lines feeder automation implementation pattern:voltage time type feeder automation and current differential type feeder automation,discussed its working principle,considering the working principle of IIDG,the influence of IIDG’s penetration on fault isolation and non-faulty area recovery in each feeder automation mode was analyzed in detail.The solution to reduce the impact of IIDG was proposed and the simulation was verified.

关 键 词：逆变型分布式电源(IIDG) 双向流动 馈线自动化 电压时间型 电流级差型 

分 类 号：TK01[动力工程及工程热物理] TM726[电气工程—电力系统及自动化]