电容式电流互感器绝缘劣化的诊断与探讨

Diagnosis and Discussion on CT Insulation Deterioration

阐述了油纸电容式电流互感器的结构特点 ;分析了影响电容式电流互感器绝缘劣化的原因 ;结合测量 tgδ与电压和温度的关系、绝缘油的色谱分析、水份含量值、绝缘油介损测量等试验方法 ,及时诊断电容式电流互感器的运行状况 。

The structural feature of oiled p a per condenser type current transformer was described and the cause of its insula tion deterioration was analyzed.Through tgδ measuring,as compared with the rela tion between tgδ,voltage and temperature,and analyzing the chromatography of in sulation oil,humidity value and tgδ measuring way,the running condition of CT can be diagnosed on time,to assure its safe operation. Key words:CT;tgδ measurement ;chromatography analysis;insulation deteriorationene on RDX thermal gas producing and the formation of nitr oso-RDX. The outlined mechanism makes the knowledge of thermal decomposition of nitramine in solutions one step forward.