浅议变压器过热型故障部位的判定

从油裂解功率关系式出发，对判定变压器过热型故障发生部位的总烃安伏曲线法、总烃安伏法和总烃产气率法进行了分析比较，分析结果表明，若故障部位在导电回路，总烃产气率将与电压平方成正比；若故障部位发生在磁路上，则总烃产气率与电流平方成正比；而总烃量与油裂解功率之间不存在线性比例关系，总烃产气率法可作为在线测定变压器过热故障部位的一种辅助方法。

A Brief Discussion on Diagnosis for Overheated Fault in Transformers

On the basis of oil splitting power formula,the following principle is expounded and proved in this paper. Whenoverheated fault occurs on a electric circuit,total hydrocarbon producing rate varies directly in proportion with V';whilethe overheated fault occurs on the magnetic circuit, the producing rate varies in proportion with I2;. and there isnt a linearrelationship betWeen total hydrocarbon and oil splitting power. This principle can be used as a supplements method tolocate overheat spot in a transformer.