基于UHF法的变压器局部放电在线监测系统的开发  

Development of On-line Monitoring System for Transformer Partial Discharge Based on UHF Method

作　　者：向天堂 

机构地区：[1]广安电业局,四川广安638000

出　　处：《四川电力技术》2011年第6期63-66,共4页Sichuan Electric Power Technology

摘　　要：变压器是电力系统中的重要设备,它的绝缘状态直接关系到电网的安全运行。目前监测变压器局部放电的方法有很多种,但是由于超高频传感器安置在变压器箱体内部,变压器壳体的屏蔽作用使得超高频检测法的抗干扰能力优于目前传统局部放电检测法,该法可以最大限度避开干扰信号。目前,变压器的在线监测技术已经得到了大量的应用。根据保定某变电站的现场要求,利用delphi基于超高频法开发了一套基于超高频法的管理系统,并且在现场得到了应用,取得了较好的效果。The transformer is the important equipment in power system and its insulation state directly relates to the safe operation of power grid. The current monitoring method for transformer partial discharge is too much, but because the ultra -high frequency （UHF） sensors are placed in the interior of transformer tank, the shielding effect of transformer shell makes UHF method is better than the traditional ones, and this method can avoid interference signals to the utmost. At present, the on - line monitoring technologies of transformer have been widely used. According to the field requirements of a substation in Baoding, a management system based on UHF method is developed using delphi. It has been applied in the field, and the good resuits are achieved.

关 键 词：变压器 超高频法 局部放电 在线监测 管理系统 DELPHI 

分 类 号：TM855[电气工程—高电压与绝缘技术]