摘要
电流回路是继电保护的重要组成部分,电流的极性影响继电保护动作的选择性,极性错误将导致保护误动或拒动,严重威胁系统的安全。线路、变压器、发电机、母线等各种保护装置对电流极性的要求不尽相同,因此,在进行继电保护调试时,对于不同保护装置的电流极性应分别对待,从严考核,确保电流极性正确,保护装置可靠运行。
The current circuit is an important composition in relay protection and the current polarity effects on the selectivity of the relay protection operation. The wrong polarity should result in malfunction or no operation of the protection, which threatens the safety of the system seriously. Different protection devices used for line, transformers, generators and bus have different requirements for the current polarity. So during commissioning of the relay protection different treatment should be done for the current polarity of different protection devices to ensure the correction of the polarity and reliable operation of the protection devices.
出处
《电力建设》
2006年第5期58-61,共4页
Electric Power Construction
关键词
继电保护
电流回路
极性
调试
relay protection
current clreuit
polarity
commissioning
