摘要
通过对发生在500 kV某变电站主变差动保护一次误动作情况的分析,探讨变电站地电位差对差动保护的影响,并对此次事故应吸取的教训和同类事故预防提出了对策和建议。
Through the analysis on the malfunction of main transformer differential protection happened at one 500 kV substation, the influence of earth potential differernce on differential protection in substation is discussed and the corresponding strategies and suggestions are proposed.
出处
《四川电力技术》
2006年第4期14-16,29,共4页
Sichuan Electric Power Technology
关键词
500kV
主变差动保护
二次回路
电位差
等电位
误动
事故预防
对策
500 kV
main transformer differential protection
secondary circuit
potential difference
equal potential
malfunction
accident prevention
countermeasure
