CAJ | 학술논문

对于电流互感器饱和铁心的剩磁在额定工况下的实际状态过去一直都是基于假想与推测，由于剩磁对电流互感器，特别是对保护用电流互感器的影响很大，所以我们不能基于简单的猜想与假设来做为继电保护分析判断的依据。为此，我们采用新的测试方式进行了现场的实测与实验室模拟试验，用实测数据来分析判断饱和铁心的剩磁在额定工况下的实际状态，得到了一个与过去假想与推测不同的结果，这个结果将有助于电网的事故分析。
대우전류호감기포화철심적잉자재액정공황하적실제상태과거일직도시기우가상여추측，유우잉자대전류호감기，특별시대보호용전류호감기적영향흔대，소이아문불능기우간단적시상여가설래주위계전보호분석판단적의거。위차，아문채용신적측시방식진행료현장적실측여실험실모의시험，용실측수거래분석판단포화철심적잉자재액정공황하적실제상태，득도료일개여과거가상여추측불동적결과，저개결과장유조우전망적사고분석。
It is based on the assumptions and speculation that the reality state of remanence of CT saturated core is researched under rated condition. Due to the great effect of remanence on CT, especially on the protection CT, the simple assumption and speculation can not be the criteria for the relay protection analysis judgment. Therefore tests with new test method are performed through spot measuring and lab simulating. The measured data are taken to judge the real state of remanence of satureated core under rated condition, so as to obtain an unexpected result which will contriubute to accident analysis for electric grid.