低温对高压电缆户外终端绝缘油电气性能的影响

Effect of Low Temperature on Electrical Properties of Outdoor Terminal Insulating Oil of High Voltage Cable

根据调研结果,对不同种类的绝缘油的低温性能展开分析。研究结果表明,绝缘油凝固是造成冬季高压电缆户外充油终端故障的主要原因。而现行相关国家标准中对于绝缘油低温性能缺少相关规定,建议在标准中标明高压电缆户外充油终端绝缘油的最高倾点。

According to the survey results,The low temperature properties of different kinds of insulating oils are analyzed.The results show that,The solidification of insulating oil is the main cause of outdoor oil filled terminal failure of high voltage cable in winter.However,the current relevant national standards lack relevant provisions on the low-temperature performance of insulating oil,It is suggested to indicate the maximum pour point of insulating oil at outdoor oil filled terminals of high voltage cables in the standard.