分布式发电对重合器模式馈线自动化的影响  

Effect of distributed generation on feeder automation of recloser mode

作　　者：赵上林[1] 吴在军[1] 胡敏强[1] 窦晓波[1] 

机构地区：[1]东南大学电气工程学院伺服控制技术教育部工程研究中心,江苏南京210096

出　　处：《电力自动化设备》2009年第10期55-58,共4页Electric Power Automation Equipment

基　　金：国家自然科学基金项目(50807008)~~

摘　　要：研究了实施重合器模式馈线自动化(FARM)的配电网馈线在接入分布式电源(DG)后发生相间短路故障时自动开关设备的保护配合动作行为。基于馈线上2个自动开关设备间的配合,考虑实际运行中发生故障时DG有可能没有及时退出的情形,针对DG的不同接入方式以及短路故障发生的不同位置,详细分析了FARM系统中典型的重合器-熔断器配合、重合器-分段器配合、重合器-重合分段器配合以及重合器-重合器配合在DG接入后的运行状况。得到了FARM系统中按传统配合方式整定的自动开关设备面对DG接入在短路故障时出现误动、拒动、配合紊乱等情形的内在机理。提出了DG接入后保证FARM系统中自动开关设备保护配合准确的DG容量与接入位置的限制策略。For feeder of distribution system connected with DGs（Distributed Generations）,which is operating in FARM （Feeder Automation of Recloser Mode）,the coordinated actions of its auto-switching devices against an inter-phase fault are analyzed. On condition that DGs are not disconnected in time after the feeder fault, the effect of connected DGs on the coordination between two auto-switching devices is explored for different DG connection manners and fault locations. The typical cases of coordination between two auto- switching devices are studied：recloser and fuse, recloser and sectionalizer,recloser and automatic distribution switch, recloser and recloser. The inner mechanism of mis-operation,refuse-operation and improper coordination of auto- switching devices with traditional settings is achieved. The limit of DG capacity and placement is proposed to ensure the proper coordination between auto-switching devices in FARM system.

关 键 词：分布式发电 配电网 馈线自动化 重合器 保护 

分 类 号：TM773[电气工程—电力系统及自动化]