基于广义求差法的保护分类与单项采集异常速算  

Protection classification and rapid calculation of single acquisition abnormity based on generalized differentiation method

作　　者：万利[1] 

机构地区：[1]吉林省电力有限公司培训中心,吉林长春130022

出　　处：《继电器》2008年第4期15-18,共4页Relay

摘　　要：基于广义求差法的原理和变量对应关系,探讨了差动保护的一种分类方法。将其分成对应型、替代型、固有相位差型。探讨了区内短路电流与差电流的关系。对广义求差法在各种类型中的应用给出评价。对含有"替代采集"的替代型保护进行分析说明。除两个特例外,证明了单项采集异常速算规律,提出"系数减1法则"。证明了固有相位差型差动保护单项采集异常的结论符合"系数减1法则"。This paper discusses one classification method of differential protection based on the correspondence between the principle and variable of the generalized differentiation method. It is divided into type of correspondence, type of replacement, and type of fixed phase difference, The relationship between the internal short circuit current and differential current is discussed. The various types of application of the,generalized differential method have been evaluated. The type of replacement protection regarding to the ＂replacement acquisition＂ is analyzed and explained, Other than the two exceptions, the principle to the rapid calculation of the single acquisition abnormity has been proved and a rule named ＂rule of coefficient minus one＂ has been raised, And it proves the result of the fixed phased differential protection of single acquisition abnormity complies with the ＂rule of coefficient minus one＂.

关 键 词：广义求差法 差动保护分类 应用情况 替代采集 系数减1法则 规律 

分 类 号：TM77[电气工程—电力系统及自动化]