[1]张 涛,周远化,周远科,等.基于绝缘纸电导率定量评估绝缘纸含水量的研究[J].高压电器,2019,55(09):157-162.[doi:10.13296/j.1001-1609.hva.2019.09.021]
 ZHANG Tao,ZHOU Yuanhua,ZHOU Yuanke,et al.Study on Quantitative Evaluating Water Content of Insulating Paper Based on Conductivity of Insulating Paper[J].High Voltage Apparatus,2019,55(09):157-162.[doi:10.13296/j.1001-1609.hva.2019.09.021]
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基于绝缘纸电导率定量评估绝缘纸含水量的研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年09期
页码:
157-162
栏目:
研究与分析
出版日期:
2019-09-10

文章信息/Info

Title:
Study on Quantitative Evaluating Water Content of Insulating Paper Based on Conductivity of Insulating Paper
作者:
张 涛1 周远化12 周远科3 李红艳4
(1. 三峡大学电气与新能源学院, 湖北 宜昌 443000; 2. 国网六安供电公司, 安徽 六 安 237000; 3. 国网安徽省电力公司, 合肥 230000; 4. 国网蚌埠供电公司, 安徽 蚌埠 233000)
Author(s):
ZHANG Tao1 ZHOU Yuanhua12 ZHOU Yuanke3 LI Hongyan4
(1. College of Electrical and New Energy,China Three Gorges University, Hubei Yichang 443002, China; 2. State Grid Lu’an Power Electric Supply Company, Anhui Lu’an 237000, China; 3. State Grid Anhui Electric Power Company, Hefei 230000, China; 4. State Grid Bengbu Power Electric Supply Company, Anhui Bengbu 233000, China)
关键词:
水分 极化/去极化电量差 电导率 油纸绝缘 变压器
Keywords:
moisture content polarization/depolarization charge difference conductivity oil paper insulationtransformer
DOI:
10.13296/j.1001-1609.hva.2019.09.021
摘要:
定量评估油纸绝缘系统中绝缘纸的含水量,能有效为变压器干燥提供决策依据,延长 变压器的使用寿命。极化/去极化电流法能无损检测油纸绝缘系统的电导率,文中基于极化/去 极化电流(PDC)测量方法,采用极化/去极化电量差计算出绝缘纸电导率,研究了不同含水量 浸油绝缘纸电导率的变化规律;并对比了电导电流法与极化/去极化电量差法计算系统电导率 时的误差;最后应用电量差法求出了绝缘纸的电导率,采用最小二乘法对绝缘纸电导率与水分 含量进行拟合,获得了绝缘纸电导率与绝缘纸含水量之间的定量关系。研究结果表明:电量差 法比电导电流法的计算精度更高,绝缘纸的电导率与水分含量呈指数函数关系,因而绝缘纸电 导率可定量评估绝缘纸中的含水量。
Abstract:
To quantitatively evaluate moisture content in insulating paper in oil paper insulation system,the polarization/depolarization current(PDC) measurement method is employed for the conductivity of oil immersed insulating paper.The conductivity of the insulating paper is calculated via polarization/depolarization charge difference, and the variation of the conductivity of the insulating paper with different water content is analyzed. Moreover, the calculation error of the conductivity between the conductance current method and the polarization/depolarization charge difference method is discussed, and the quantitative relationship between conductivity and moisture content of the insulating paper is fitted by the least square method. The results show that: the calculation accuracy of the charge difference method is higher than that of the conductance current method,and the relationship between conductivity and moisture content of the insulating paper is an exponential function, therefore the conductivity of the insulating paper can be used to evaluate the moisture content of the insulating paper quantitatively.

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备注/Memo

备注/Memo:
收稿日期:2019-02-11; 修回日期:2019-04-19 基金项目:国家自然科学基金项目(51307097)。 Project Supported by National Natural Science Foundation of China(51307097).张 涛(1981—),男,博士,副教授,从事电力系统优化运行、高电压绝缘与测试技术、电力 系统过电压与接地技术、电力系统优化运行等方面的工作。
更新日期/Last Update: 2019-09-10