分流式两点接地导致差动保护动作情况的分析  

With Busbar Protection Operation Situation Analysis Lead by Two Points Grounding

作　　者：刘飞 余锐[2] 顾羽洁[2] 

机构地区：[1]湖南省湘潭电业局,湖南湘潭411100 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电气技术》2013年第5期75-78,共4页Electrical Engineering

摘　　要：随着微机保护装置的广泛应用,二次设备制造厂家对微机保护装置的抗干扰性能、对电网的运行特征应对原理都进行了比较充分的研究,确保保护设备本身的可靠性。电力系统运营单位的规程规范成为系统可靠运行的重要因素,其中TA二次回路的问题已成为影响微机保护正确动作率的重要原因之一。TA二次回路的缺陷一般会在继电保护装置上得到体现,保护装置任何告警都是重要提示,如不及时排除缺陷可能会影响保护设备的可靠性,扩大事故范围。With the microcomputer protection device widely using, the anti-jamming performance, the operating characteristics and principle of the grid are carried out fully by the secondary equipment manufacturer of microcomputer protection device, to ensure the reliability of the protection device itself. Standards and regulations to become the reliable operation of the power system operating units important factor, TA secondary circuit has become one of the important reasons for correct action rate impact of microcomputer protection. TA secondary circuit defects will generally be reflected in the protection devices, any alarm protection devices are important prompt, if not promptly eliminate defects that may affect the reliability of the protective equipment, and to expand the scope of the accident.

关 键 词：二次回路 两点接地 TA断线 

分 类 号：TM77[电气工程—电力系统及自动化]