[1]刘 恒,陈文鸿,沈剑韬,等.一种电力变压器绝缘电阻的高压高阻电桥测量方法[J].高压电器,2020,56(07):224-228.[doi:10.13296/j.1001-1609.hva.2020.07.033]
 LIU Heng,CHEN Wenhong,SHEN Jiantao,et al.Method for Measuring Power Transformer Insulation Resistance Based on High-voltage and High-resistance Bridge[J].High Voltage Apparatus,2020,56(07):224-228.[doi:10.13296/j.1001-1609.hva.2020.07.033]
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一种电力变压器绝缘电阻的高压高阻电桥测量方法()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第56卷
期数:
2020年07期
页码:
224-228
栏目:
技术讨论
出版日期:
2020-07-20

文章信息/Info

Title:
Method for Measuring Power Transformer Insulation Resistance Based on High-voltage and High-resistance Bridge
作者:
刘 恒1 陈文鸿1 沈剑韬2 何益宏2
(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)
Author(s):
LIU Heng1 CHEN Wenhong1 SHEN Jiantao2 HE Yihong2
(1. Guangdong Power Grid Co., Ltd., Jiangmen Power Supply Bureau, Guangdong Jiangmen 529020, China; 2. Faculty of Intelligent Manufacturing, Wuyi University, Guangdong Jiangmen 529020, China)
关键词:
高压高阻电桥 电力变压器 绝缘电阻 模糊PID控制
Keywords:
high-voltage and high-resistance bridge power transformer insulation resistance fuzzy PID control
DOI:
10.13296/j.1001-1609.hva.2020.07.033
摘要:
变压器绝缘性能试验能有效判断变压器是否存在整体受潮、部件表面受潮及贯穿性缺陷,是变压器能否投入运行的重要依据。文中在用于高压高阻测量的惠斯通电桥基础上,研究一种电力变压器绝缘电阻的测量方法,利用模糊PID控制器较好的的跟踪能力及响应速度调节电桥平衡,再根据平衡公式准确算出变压器绝缘电阻值。在用扩展德拜模型模拟等效变压器绝缘电阻基础上,建立测量系统的仿真模型,实验结果也与计算结果相一致,从而验证了该方法的可行性。
Abstract:
The insulation performance test of transformer can effectively judge whether the transformer has the defects of overall dampness, component surface dampness and penetrability, which is the important basis of whether the transformer can be put into operation.This paper studied a method for measuring the insulation resistance of power transformer based on the Wheatstone bridge used for high-voltage and high-resistance measurement,the bridge balance was adjusted by the fuzzy PID controller with better tracking ability and response speed,and then the insulation resistance value was calculated accurately according to the balance formula. The simulation model of measurement system was established based on the extended Debye model of equivalent and simulative transformer insulation resistance, and the feasibility of this method was verified. The experimental results also verified the correctness of the method.

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备注/Memo

备注/Memo:
收稿日期:2020-01-24; 修回日期:2020-03-29 基金项目:广东电网有限责任公司科技项目资助(GDKJXM20173121)。 Project Supported by Technical Project of Guangdong Power Grid Co.,Ltd.(GDKJXM20173121).刘 恒(1989—),男,工程师,主要从事电测仪表校验与电能质量分析方面的研究。 何益宏(1962—),男,博士,教授,主要从事电源技术、电力电子电路与系统的建模与仿真、电力电子技术在输配电系统中的应用等方面的研究。
更新日期/Last Update: 2020-07-25