NSR890型微机变压器保护装置比率差动的调试  

Percentage Differential Debugging of Protective Device for NSR890 Microprocessor Transformer

作　　者：张鲁[1,2] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009 [2]巢湖供电公司,安徽巢湖238005

出　　处：《电工电气》2010年第10期50-52,共3页Electrotechnics Electric

摘　　要：介绍了NSR890型微机变压器保护装置比率差动的调试方法,对其比率差动动作特性和变压器二次电流星形-三角形变换方式进行了分析,并结合具体实例给出了调试参数的计算方法和现场试验接线方式。调试结果表明该微机变压器保护装置能准确可靠地校验比率差动保护。Introduction was made to a percentage differential debugging method of protective device for NSR890 microprocessor transformer.Analysis was made to its percentage differential operating characteristics and star-delta transform method of secondary current.Combined with an actual example,the calculation method of debugging parameters and the site test wiring method were given.Debugging results show that the protective device for microprocessor transformer can verify percentage differential protection correctly and reliably.

关 键 词：微机变压器保护装置 比率差动 调试 

分 类 号：TM772[电气工程—电力系统及自动化]