The measurement of dielectric loss and volume resistivity is effective preventive tests to judge insulating oil isolation status of polluted and aging , and it ' s important method of ensuring the safe operation of transformer and oil - filled circuit breaker , etc . however , the measuring systems of insulating oil dielectric loss and volume resistivity used at present exist the shortcoming of low accuracy , weak repeatability , inconvenience , and its thermostatic control system ca n ' t meet the challenge 绝缘油的介质损耗因数、体积电阻率测量，是判断绝缘油的劣化与污染程度的有效预防性试验，是保障变压器、油断路器等充油电力设备安全运行的重要手段。然而，目前所使用的绝缘油介质损耗因数、体积电阻率测试系统存在着测量精度低、测量结果重复性不好、控温系统不能满足控温要求、操作不便等缺陷，针对这一现状，本文对绝缘油介损及体积电阻率一体化测试系统进行了研究。
With the rapid development of electric power enterprise , the demand on the reliability of electric power system is further more , and the development of insulation monitoring technique has been paid more attention . oil - filled equipment plays a very important role in power system , and the dielectric loss factor ( tg ) is an important parameter to reflect the insulation condition . therefore , studying the tg of insulating oil is of important practical meaning 随着电力事业的迅速发展,对电力系统运行可靠性要求将越来越高,电气设备绝缘检测技术的发展更加受到重视。充油设备在电力系统中占有相当大的比例,而绝缘油介质损耗因数是反映其绝缘状况的重要参数。因此,研究绝缘油介质损耗因数的测量方法具有十分重要的实际意义。
