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[1]刘骥,尹梦涵,李秀婧,等.油纸绝缘老化评估的Davidson-Cole模型参数提取方法[J].电机与控制学报,2017,21(03):63-70.[doi:10.15938/j.emc.2017.03.009]
 LIUJi,YINMeng-han LI Xiu-jing,CHI Ming-he HUANG Ling.Parameters extraction of Davidson-Cole model on aging assessment of oil-paper insulation [J].,2017,21(03):63-70.[doi:10.15938/j.emc.2017.03.009]
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油纸绝缘老化评估的Davidson-Cole模型参数提取方法()
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年03
页码:
63-70
栏目:
出版日期:
2017-03-01

文章信息/Info

Title:
Parameters extraction of Davidson-Cole model on aging assessment of oil-paper insulation
作者:
刘骥尹梦涵李秀婧池明赫黄玲
(1.哈尔滨理工大学电介质工程国家重点实验室培育基地,黑龙江哈尔滨150080; 2.云南电力技术有限责任公司,云南昆明650217)
Author(s):
?LIUJi1YINMeng-han1 LI Xiu-jing2 CHI Ming-he1 HUANG Ling1
?(1. State Key Laboratory Breeding Base of Dielectrics Engineering Harbin University of Science and Technology Harbin 150080,China; 2. Yunnan Electric Power Technology CO. LTD. Kunming 650217,China)
关键词:
油纸绝缘 绝缘评估 介电响应 频域介电谱 Davidson-Cole模型
Keywords:
oil-paper insulation? insulation assessment? dielectric response? frequency domain dielectric spectroscopy Davidson-Cole model
分类号:
TM 406
DOI:
10.15938/j.emc.2017.03.009
文献标志码:
A
摘要:
针对目前变压器油纸绝缘老化状态评估中的纸板聚合度测定破坏性取样、介电响应法测量没有定量判据等问题,提出一种基于Davidson-Cole模型的现场绝缘老化状态定量评估方法。首先仿真研究Davidson-Cole模型参数提取方法,借助现场测量的去极化电流数据,计算出油纸绝缘等值电路参数与频域复介电常数,并利用所得数据绘制Davidson-Cole图,采用多变量最小二乘拟合方法得出松弛时间、介电常数变化量等Davidson-Cole模型参量。实验研究了油纸绝缘不同老化程度的Davidson-Cole模型,采用非线性拟合方法对其老化状态进行Davidson-Cole模型参量提取并分析参数变化,研究结果表明,模型参数与老化程度有直接关系,仿真结果与实验结果一致,对变压器油纸绝缘老化状态评估有参考价值。
Abstract:
?Aiming at problems of destructive sampling for measuring polymerization degree of insulating board, non-quantitative criterion for dielectric resjDonse measurement in present aging assessment of trans-former oil-j^aper insulation a quantitative on-site insulation asessment metliod was proposed on the basis of Davidson-Cole model. The extraction metliod of Davidson-Cole model parameters was studied. Using the on-site testing data of depolarization current equivalent circuit parameters and frequency domain complex permittivity of oil-j^aper insulation were calculated and Davidson-Cole graphs was plotted. The Davidson-Cole model parameters such as relaxation time permittivity change were fitted by using multivariable least squares met!iod. The Davidson-Cole model parameters wit!i diference aging degree in oil-jDaper insu-ation were investigated, meanwhile the extraction met!iod of nonlinear fitting was adopted and changing rules of Davidson-Cole model parameters were analyzed in detail. It is shown that Davidson-Cole model parameters have some relationship witli the degree experimental results. The study is heljDful toers. of aging,and the simulation results are consistent witlh aging assessment of oil-jDaper insulation

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备注/Memo

备注/Memo:
?收稿日期:2015 -09 -16
基金项目:国家自然科学基金(51277047$;国家自然基金青年项目(51407051$;黑龙江省自然科学基金(E201450/E070201)
作者简介:刘骥(1972—),男,博士,教授,研究方向为高电压绝缘技术;
尹梦涵(1992—),女,硕士研究生,研究方向为电力设备状态评价;
李秀婧(1989—),女,硕士,工程师,研究方向为高电压与绝缘技术;
池明赫(1985—),男,博士,讲师,研究方向为特高压变压器绝缘技术;
黄玲(1974—),女,博士,教授,研究方向为模式识别与参数辨识。

更新日期/Last Update: 2017-04-01