摘要
油浸式电抗器作为超高压变电站的关键设备,其绝缘状态的现场考核是确保电力系统安全的重要环节。文章针对超高压变电站油浸式电抗器的耐压试验方法进行了深入研究,首先调研了电抗器的典型绝缘缺陷及其现场绝缘考核技术,然后介绍了串联谐振耐压试验和振荡电压耐压试验的基本原理和装置类型,并对比分析了两种试验方法的优缺点。研究结果表明,串联谐振耐压试验方法更适合于变电站中油浸式电抗器的现场绝缘考核。
The safe operation of substations is crucial to the stability of the power system.As the key equipment in the substation,the on-site assessment of the insulation status of the reactor is an important link to ensure the safety of the power system.This paper carries out an in-depth study on the voltage withstand test method for oil-filled reactors in ultra-high voltage substations,firstly,investigating the typical insulation defects of reactors and their on-site insulation assessment techniques,and then introducing the basic principles and device types of series resonance withstand test and oscillating voltage withstand test,and comparing and analysing the advantages and disadvantages of the two test methods.The results show that the series resonant withstand voltage test method is more suitable for the field insulation assessment of high-voltage oil-filled reactors in substations.
作者
彭威龙
PENG Weilong(Hunan Wuling Electric Power Engineering Co.,Ltd.,Changsha 410000,China)
关键词
电抗器
绝缘考核
振荡冲击
变频电源
串联谐振
reactor
insulation test
oscillatory shock
variable frequency power supply
series resonance
