摘要
介绍新、改扩建电厂或变电站建设初期,由于短期内无法组织足够的有效负荷,未能进行母线或变压器差动保护的带负荷测试,将造成涉网设备无主保护运行的被动局面。为此,通过分析大容量电动机的启动过程,并利用先进的测试仪器设备,获取同时段内的电流数据、波形,完成差动保护的极性测试。
The paper introduced the network connecting devices operating under no main protection, because the efficient load could not be organized and the differential protection for bus and transformer could not be test with load, in the initial construction period of power plant and substation. Therefore, by analyzing the start-up process of large capacity motor, and using advanced test devices to obtain current data and wave, the differential protection polarity test was completed.
出处
《贵州电力技术》
2014年第6期59-60,46,共3页
Guizhou Electric Power Technology
关键词
差动保护
启动电流
极性测试
differential protection
start-up current
polarity test
