南方电网技术
南方電網技術
남방전망기술
SOUTHERN POWER SYSTEM TECHNOLOGY
2011年
5期
94-97
,共4页
张富刚%邓明%董武亮%韩丰收%方辉%熊乐乐
張富剛%鄧明%董武亮%韓豐收%方輝%熊樂樂
장부강%산명%동무량%한봉수%방휘%웅악악
二次回路%分布电容%一点接地%光耦回路%抗干扰措施
二次迴路%分佈電容%一點接地%光耦迴路%抗榦擾措施
이차회로%분포전용%일점접지%광우회로%항간우조시
secondary circuit%distributed capacitance%single point grounding%optocoupler circuit%anti-interference measures
变电站二次系统接线复杂,点多面广,运行环境差,容易出现各种各样的异常情况和故障。分析了二次回路的常见问题,包括直流分布电容和一点接地的查找技术,电流互感器、电压互感器组成的交流回路的接地和极性,微机保护系统的光耦合和干扰以及抗干扰措施,并对这些常见问题给出了对策。
變電站二次繫統接線複雜,點多麵廣,運行環境差,容易齣現各種各樣的異常情況和故障。分析瞭二次迴路的常見問題,包括直流分佈電容和一點接地的查找技術,電流互感器、電壓互感器組成的交流迴路的接地和極性,微機保護繫統的光耦閤和榦擾以及抗榦擾措施,併對這些常見問題給齣瞭對策。
변전참이차계통접선복잡,점다면엄,운행배경차,용역출현각충각양적이상정황화고장。분석료이차회로적상견문제,포괄직류분포전용화일점접지적사조기술,전류호감기、전압호감기조성적교류회로적접지화겁성,미궤보호계통적광우합화간우이급항간우조시,병대저사상견문제급출료대책。
With the characteristics of complex circuits,a lot of connection points and harsh operation environment,the second circuit wiring of substations is vulnerable to a variety of abnormalities or failures.The problems commonly happened in the second circuit wiring are analyzed in the paper,including the DC distributed capacitance and searching techniques for single point grounding,the grounding and polarity of the AC circuit with PT/TA,the optical coupling and interference of computer protection system,and the anti-jamming measures.Meanwhile,countermeasures to deal with these problems are given.
