高铁牵引变电所主变比率差动保护的校验方法

Calibration Methods for Main Transformation Ratio Differential Protection of Traction Substation for High Speed Railway

针对高速铁路牵引变电所主变压器微机保护装置中差动保护测试的问题,对自适应差动保护动作特性进行了分析,提出现场测试方法和校验公式,以有效利用停电时间,快速、准确地完成差动保护的测试和校验,保障主变压器保护可靠动作。

With regard to the issues occurred in differential protection test of macro-processor protection device of traction transformer of traction substation of high speed railway, analyzes the characteristics of self-adaptive protection actions, puts forward the site test methods and calibration formulae so as to accomplish promptly and accurately the differential protection test and calibration by using the time of power off and guarantee the reliable operation of main transformer protection