一种基于桥式电路的电力变压器绝缘电阻测量方法  

作　　者：陈文鸿 吴智影 沈剑韬 汪倩文 何益宏 

机构地区：[1]广东电网有限责任公司江门供电局,广东江门529020 [2]五邑大学智能制造学部,广东江门529020

出　　处：《科技创新与应用》2019年第26期22-23,27,共3页Technology Innovation and Application

基　　金：广东电网有限责任公司科技项目资助（编号：GDKJXM20173121）

摘　　要：电力变压器绝缘电阻是反映变压器绝缘性能的一项重要指标,是变压器能否投入运行的重要依据.文章提出一种桥式电路测量模型用于测量变压器绝缘电阻,利用控制程序自动调节电桥平衡,根据平衡公式准确计算出变压器的绝缘电阻值.在MATLAB/Simulink中建立了测量电路仿真模型,仿真模型的运行结果验证了测量方法的正确性和可行性.The insulation resistance of power transformer is an important index to reflect the insulation performance of transformer and an important basis for whether the transformer can be put into operation. In this paper, a bridge circuit measurement model is proposed to measure the insulation resistance of transformer. The bridge balance is automatically adjusted using the control program, and the insulation resistance of transformer is calculated accurately according to the balance formula. The simulation model of the measurement circuit is established in MATLAB/Simulink, and the running results of the simulation model verify the correctness and feasibility of the measurement method.

关 键 词：电力变压器 绝缘电阻 桥式电路 程序控制 

分 类 号：TM41[电气工程—电器]