关于差动保护二次谐波制动比测试过程的探讨

Discussion of the testing process on the second harmonic restraint ratio of differential protection

差动保护在发电机、变压器的保护中占有重要地位 ,这里针对在现场测试二次谐波制动比存在的一些问题 ,提出应注意的事项 ,并作为对JCD

The differential protection has been playing a very important role in power generator and transformer protections. In this paper, some precautions are proposed in terms of some problems appeared in testing the second harmonic restraint ratio on site. It is also a supplementary to debugging section in the manual on JCD-11 differential protection.