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[1]张涛,左倩,任乔林,等. 油纸绝缘非标准极化谱的中心时间常数提取[J].电机与控制学报,2018,22(08):82-88.[doi:10.15938 /j.emc.2018.08.011]
 ZHANG Tao,ZUO Qian,EN Qiao-lin,et al. Central time constant of nonstandard polarization spectrum of oil-paper insulation[J].,2018,22(08):82-88.[doi:10.15938 /j.emc.2018.08.011]
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 油纸绝缘非标准极化谱的中心时间常数提取
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
22
期数:
2018年08
页码:
82-88
栏目:
出版日期:
2018-08-15

文章信息/Info

Title:
 Central time constant of nonstandard polarization spectrum of oil-paper insulation
作者:
 张涛12 左倩23 任乔林3 夏怀民3
 ( 1. 三峡大学电气与新能源学院,湖北宜昌443002; 2. 三峡大学新能源微电网湖北省协同创新中心,湖北宜昌443002;3. 国网湖北省电力有限公司孝感供电公司,湖北孝感432100)
Author(s):
 ZHANG Tao12 ZUO Qian23 REN Qiao-lin3 XIA Huai-min3
  ( 1. College of Electrical Engineering and New Energy,Three Gorges University,Yichang 443002,China;2. Hubei Provincial Collaborative Innovation Center for New Energy Microgrid,Three Gorges University,Yichang 443002,China;3. State Grid Hubei Electric Power Company Xiaogan Power Supply Company,Xiaogan 432100,China)
关键词:
回复电压法 极化谱 中心时间常数 扩展德拜等值电路 分段3 次hermit 插值 水分含量
Keywords:
recovery voltage method polarization spectrum central time constant extend Debye equivalent circuit piecewise cubic hermite interpolating moisture content
分类号:
TM 411
DOI:
10.15938 /j.emc.2018.08.011
文献标志码:
A
摘要:
针对实际测量中变压器油纸绝缘非标准极化谱中心时间常数不够精确并且耗时较长的问题,文中提出了一种新的中心时间常数提取方法。变压器油纸绝缘非标准极化谱曲线的产生与回复电压测试参数设置、油纸绝缘状态有关,将扩展德拜等值电路模型用于研究非标准极化谱的中心
时间常数特性,基于粒子群算法求解由等值电路参数,建立回复电压求解公式,并采用分段3 次hermit 对回复电压峰值时间进行插值计算,进而计算出连续的标准回复电压极化谱,确定中心时间常数的位置,最后结合了两台实际投入电网运行的变压器测量回复电压极化谱数据,从而得到准确的中心时间常数值,验证了该方法的有效性,提高利用中心时间常数诊断绝缘系统水分含量的准确性。
Abstract:
In order to overcome the long time of the actual measurement and appearance of imprecise central time constant,a new method of obtaining central time constant was proposed. The non-standard recovery voltage spectrum of oil-paper insulation is influenced by parameter settings in the recovery voltage test and the state of oil-paper insulation. Then the extended Debye equivalent circuit model was applied to the central time constant characteristics of the non-standard spectrum. Based on the particle swarm algorithm,
equivalent circuit parameters were obtained by the nonlinear equations of initial slopes of recovery voltage. According to the solution equation of recovery voltage value,continuous recovery voltage polarization spectrum requires the continuous peak time calculated by piecewise cubic hermite interpolating and determines main positions of the central time constant. The measured recovery voltage data of two transformers operated were combined to obtain more accurate central time constant value,which verifies the effectiveness of the method and improves the diagnostic accuracy of the utilization of the central time to evaluate insulation system moisture content.

参考文献/References:

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相似文献/References:

[1]林智勇,蔡金锭. 油纸绝缘极化等效电路参数计算方法[J].电机与控制学报,2014,18(08):62.
 LIN Zhi-yong,CAI Jin-ding. Novel method to calculate polarized equivalentcircuit of oil-paper insulation[J].,2014,18(08):62.

备注/Memo

备注/Memo:
收稿日期: 2016 - 05 - 12
基金项目: 国家自然科学基金( 51307097)
作者简介: 张涛( 1981—) ,男,博士,副教授,研究方向为电气设备在线监测与故障诊断;
左倩( 1992—) ,女,硕士,研究方向为电气设备在线监测与故障诊断;
任乔林( 1969—) ,男,高级工程师,研究方向为电力用油监测;
夏怀民( 1971—) ,男,高级工程师,研究方向为大数据及电力设备故障诊断。:
更新日期/Last Update: 2018-10-06