差动保护灵敏度与启动电流、制动系数和原理之间的关系  

DISCUSSION ON RELATIONSHIP OF PICK-UP CURRENT,RESTRAINED FACTOR AND PRINCIPLESTO THE DIFFERENTIAL PROTECTION SENSITIVITY

作　　者：陆于平[1] 李玉海[2] 李鹏 袁宇波[1] 

机构地区：[1]东南大学电气工程系,江苏省南京市210096 [2]西北电力试验研究院,陕西省西安市710054 [3]国电南自股份有限公司,江苏省南京市210003

出　　处：《电力系统自动化》2002年第8期51-55,共5页Automation of Electric Power Systems

摘　　要：分析了差动保护的有关整定原则 ,明确提出了差动保护的灵敏度与许多因素有关 ,如定值、原理和实现方式等。不能仅改变某一个因素 (如定值 )来提高灵敏度 ,而需要综合考虑各个因素的影响 ,否则适得其反。并就灵敏度系数的校验、制动系数和斜率的区别、标积制动与比率制动的联系和区别等展开讨论 。The setting principles of differential protection for generator and transform er unit are analyzed in this paper.The sensitivity of the protection has relation to the settings,principles,realization methods and etc,which could not be im proved only by changing any element such as settings,or it m ay lead to the opposite way.The verification of sensitivity factor,and the difference between restrained factor and slope of operating characteristic are discussed.Meanwhile the relationship and difference between ratio- restrained and product- restrained principles and some ideas of authors are also proposed.

关 键 词：差动保护 灵敏度 制动系数 启动电流 继电保护 电力系统 

分 类 号：TM771[电气工程—电力系统及自动化]