一起小电流接地系统故障引起的设备损坏分析  

Cause Analysis of Equipment Damage Accident Caused by Ground Fault in System with Non-effectively Earthed Neutral

作　　者：蔡明 王帅 罗建[2] 尚宇 

机构地区：[1]国网咸阳供电公司,陕西咸阳712000 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [3]国网陕西省电力公司电力科学研究院,陕西西安710054

出　　处：《陕西电力》2015年第2期72-75,共4页Shanxi Electric Power

基　　金：国家自然科学基金(51177177)

摘　　要：分析继电保护动作情况、及时处理电网事故,可以有效提高电力系统的安全运行水平。本文从一起小电流接地系统单相接地故障诱发的连锁性多点接地故障引起的设备损坏事故进行分析,结合故障录波剖析整个事件中故障的发展过程以及继电保护的动作情况,深入探究导致事故的根本缘由,并提出相应的反事故措施。It is important to analyze relay protection operation and handle power grid accident for effectively improving the safe operation level of power system.The paper analyzes the equipment damage accident caused by the cascading failure of small current grounding system single-phase ground fault,discusses the development process of the fault and the action of the relay protection combined with the fault recording,and proposes corresponding anti-accident measures based on intensive study on the accident cause.

关 键 词：小电流接地系统 动作分析 开关爆炸 反事故措施 

分 类 号：TM732[电气工程—电力系统及自动化]