摘要
以变压器差动保护误动的案例为切入点,分析差动电流回路极性接反对差动保护动作行为的影响,提出防止变压器差动保护误动的措施及做法,重点阐述从工程验收、定值管理以及带负荷测试等各重要环节进行严格把关,保证保护装置及二次回路处于良好的状态,确保电网的安全可靠运行。
The paper analyzes impact of reversely connected current circuit polarity on differential protection on the basis of maloperation of differential protection of transformers, it proposes countermeasures and actions against maloperation of dif- ferential protection and emphatically elaborates on strict check on project acceptance, fixed value management and test with load so as to make sure that protective devices and secondary circuit can be in good condition and the power gird operation can be safe and reliable.
出处
《广东电力》
2012年第2期103-106,119,共5页
Guangdong Electric Power
关键词
变压器
差动保护
误动
极性
transformer
differential protection
maloperation
polarity
