不同电场下CVT电容单元膜纸绝缘损坏机理研究
Study on Damage Mechanism of Film-paper Insulation of CVT Under Different Electric Fields
- 高压电器 2026年62卷第2期 页码：102-111
- 作者机构：
西安交通大学电气工程学院，西安 710049
国网浙江省电力有限公司电力科学研究院，杭州 310007
- 作者简介：
贺达（1998—），男，硕士研究生，主要从事电容器绝缘介质方面的研究（通信作者）（E-mail：hedahv@stu.xjtu.edu.cn）。
- 基金信息：国网浙江省电力有限公司科技项目Science and Technology Project of State Grid Zhejiang Electric Power Company Ltd.(5211DS20007M)
DOI：10.13296/j.1001-1609.hva.2026.02.013
中图分类号：收稿：2025-07-11，
修回：2025-10-18，
纸质出版：2026-02-16
- 稿件说明：
移动端阅览
贺达, 李博文, 杨智, 等. 不同电场下CVT电容单元膜纸绝缘损坏机理研究[J]. 高压电器, 2026,62(2):102-111.
HE Da, LI Bowen, YANG Zhi, et al. Study on Damage Mechanism of Film-paper Insulation of CVT Under Different Electric Fields[J]. High Voltage Apparatus, 2026, 62(2): 102-111.
贺达, 李博文, 杨智, 等. 不同电场下CVT电容单元膜纸绝缘损坏机理研究[J]. 高压电器, 2026,62(2):102-111. DOI： 10.13296/j.1001-1609.hva.2026.02.013.
HE Da, LI Bowen, YANG Zhi, et al. Study on Damage Mechanism of Film-paper Insulation of CVT Under Different Electric Fields[J]. High Voltage Apparatus, 2026, 62(2): 102-111. DOI： 10.13296/j.1001-1609.hva.2026.02.013.
摘要
电容式电压互感器（CVT）在超/特高压电力系统中得到了广泛使用。CVT发生故障将影响电能计量的准确可靠和电网运行的稳定安全。文中以故障发生率最高的CVT电容单元为研究对象，通过制作适用于反映CVT电容心子电极缺陷的试样，搭建对应的实验平台，进行不同电场形式下的击穿实验并分析试品击穿点分布，研究了工频电压、正、负极性雷电冲击电压和交流叠加冲击复合电场下膜纸绝缘的损坏机制。实验结果表明，CVT电容心子的铝箔电极边缘缺陷是导致膜纸绝缘损坏的主要原因，电极缺陷的种类及变化决定了击穿点的空间分布规律。聚丙烯薄膜对正负空间电荷“陷阱”效果的差异性，会引起复合电场不同叠加幅值、叠加相位下击穿点主导类型的转变。
Abstract
Capacitor voltage transformers (CVT) are used widely in EHV/UHV power systems. The failure of CVT not only affects the accuracy and reliability of electric energy measurement but also the stable and safe operation of power grid. In this paper the CVT capacitor unit with the highest fault rate is taken as the research object. By making the sample suitable for reflecting the electrode defects of CVT capacitor core
the corresponding experimental platform is set up to perform the breakdown experiment under different electric field conditions and analyze the breakdown point distribution of the sample. Moreover
the damage mechanism of film paper insulation under power frequency voltage
positive and negative polarity lightning impulse voltage and AC superposition impulse composite electric field is studied. The experimental results show that the edge defect of aluminum foil electrode of CVT capacitor core is the main cause for the insulation damage of film paper
and the types and changes of electrode defects determine the spatial distribution of breakdown points. However
the difference in the‘trap’effect of polypropylene film on positive and negative space charges will lead to transformation of the dominant type of breakdown point under different superposition amplitude and phase.
关键词
Keywords
references
SHEN Xin,SHU Hongchun,CAO Min.Research on capacitance voltage transformer harmonic measurement[J]. Sensors and Materials,2019,31(5):1499-1512.
ZHANG Chuanji,LI Hongbin,YANG Jian,et al.Detecting measurement error drifts of a capacitor voltage transformer on-line and its field application[J]. Measurement Science &Technology,2019, 30(10):6501-6509.
陈豪钰,李振华,张绍哲,等.基于MHA-CNN-SLSTM和误差补偿的短期互感器误差预测[J].电力系统保护与控制,2024,52(24):74-84.
CHEN Haoyu, LI Zhenhua, ZHANG Shaozhe, et al.Short-term transformer error prediction based onMHA-CNN-SLSTMand error compensation[J]. Power System Protection and Control, 2024, 52 (24):74-84.
刘刚,江波.电容式电压互感器故障分析及预防措施[J].变压器,2012,49(9):68-72.
LIU Gang, JIANG Bo.Fault analysis and preventive measures of capacytor voltage transformer[J]. Transformer, 2012, 49(9):68-72.
王欢,王忠东,卢树峰,等.基于误差状态模糊分析的电容式电压互感器内绝缘状态评价方法[J].电测与仪表,2024,61(4):73-80.
WANG Huan, WANG Zhongdong, LU Shufeng, et al.Internal insulation condition evaluation method for capacitor voltage transformerbased on fuzzy analysis of error condition[J].Electrical Measurement & Instrumentation, 2024, 61(4):73-80.
张竹.电容式电压互感器计量误差状态评估和预测方法研究[D].武汉：华中科技大学,2018.
ZHANG Zhu.Research on condition evaluation and prediction methods for the metering error of capacitor voltage transformer[D]. Wuhan:Huazhong University of Science and Technology, 2018.
张凯煜,沈云超,郭全军,等.一起500 kV电容式电压互感器电压异常事件的分析与处理[J].变压器,2023,60(8):65-70.
ZHANG Kaiyu, SHEN Yunchao, GUO Quanjun, et al. Analysis and treatment of an abnormal voltage event of 500 kV capacitive voltage transformer[J]. Transformer, 2023, 60(8):65-70.
何建,余睿,杨漪俊.电容式电压互感器常见故障及监测[J].电力电容器与无功补偿,2009,30(5):38-42.
HE Jian, YU Rui, YANG Yijun.The common faults and its monitoring ofCVT[J]. Power Capacitor & Reactive Power Compensation, 2009, 30(5):38-42.
陈璐,李光茂,张梦慧,等.一起110 kV电容式电压互感器异响原因分析[J].变压器,2023,60(12):68-72.
CHEN Lu, LI Guangmao, ZHANG Menghui, et al. Cause analysis of abnormal noise of a 110 kV capacitor voltage transformer[J]. Transformer, 2023, 60(12):68-72.
陈首兴,李丁九.重复频率脉冲电容器[J].电力电容器与无功补偿,1989,10(1):13-19.
CHEN Shouxing, LI Dingjiu.Repetitive impulse power capacitors[J]. Power Capacitor and Reactive Power Compensation, 1989, 10 (1):13-19.
SONG Minglan,HU Shouyu.Polypropylene film dielectric used in power capacitors[C]//International Conference on Properties and Applications of Dielectric Materials(ICPADM).Beijing:IEEE, 1988:674-677.
彭倩,吴广宁,张星海,等.局部放电对脉冲电容器的绝缘老化及其失效的影响分析[J].高压电器,2008,44(6):489-492.
PENG Qian, WU Guangning, ZHANG Xinghai, et al.Influence of partial discharge on insulation aging and failure of pulse capacitor[J]. High Voltage Apparatus, 2008, 44(6):489-492.
朱博峰,张晓,张冠祥,等.高压大容量介电储能脉冲电容器电热耦合仿真分析与原位测试[J].电工技术学报,2025,40(1):217-225.
ZHU Bofeng, ZHANG Xiao, ZHANG Guanxiang, et al. Finite element simulation and in-situ testing of electrothermal coupling in dielectric energy storage pulse capacitor for electromagnetic launch[J]. Transactions of China Electrotechnical Society, 2025, 40(1):217-225.
王岩,林浩,李慧,等.电容式电压互感器元件耐压试验研究[J].电力电容器与无功补偿,2013,34(6):45-49.
WANG Yan, LIN Hao, LI Hui, et al.Study on withstand voltage test of capacitor voltage transformer element[J]. Power Capacitor &Reactive Power Compensation, 2013, 34(6):45-49.
周力任,吴广宁,高波,等.聚酰亚胺薄膜中电荷输运机理和空间电荷特性[J].电工技术学报,2009,24(12):6-11.
ZHOU Liren, WU Guangning, GAO Bo, et al.Charge transport mechanism and space charge characteristic in polyimide film[J]. Transactions of China Electrotechnical Society, 2009, 24(12):6-11.
陈广辉.交流电场下XLPE电缆空间电荷测量系统研制[D].北京：华北电力大学,2013.
CHEN Guanghui.Study of the cable space charge measurement system under AC stress[D]. Beijing:North China Electric Power University, 2013.
黄猛,李怡然,吴延宇,等.计及界面电荷和极性效应的油纸复合绝缘非线性电路等效模型[J].电工技术学报,2024,39(11):3422-3432.
HUANG Meng, LI Yiran, WU Yanyu, et al.Equivalent nonlinear circuit model with interface charge and polarity effect for oil-paper composite insulation[J]. Transactions of China Electrotechnical Society, 2024, 39(11):3422-3432.
SAITOH K,KAWAKAMI Y,MURATA M.On the AC breakdown MECHANISMof the laminated oil-impregnated PPLP[C]//Conference on Electrical Insulation and Dielectric Phenomena(CEIDP). Victoria,Canada:IEEE,1992:236-241.
SAITOH K,KAWAKAMI Y,MURATA M. The effects of polypropylene on the impulse breakdown mechanism of the laminated oilimpregnatedPPLP[C]//Conference on Electrical Insulation and Dielectric Phenomena(CEIDP). Victoria,Canada:IEEE,1992:242-247.
方田,李化,国江,等.并联电容器绝缘介质的击穿性能研究[J].电力电容器与无功补偿,2021,42(5):66-70.
FANG Tian, LI Hua, GUO Jiang, et al. Study on breakdown performance of insulation medium of shunt capacitor[J]. Power Capacitor & Reactive Power Compensation, 2021, 42(5):66-70.
陈力,汤霖,左中秋,等.基于变异系数法和灰色关联度的高压并联电容器综合评价研究[J].电力电容器与无功补偿,2023, 44(5):27-32.
CHEN Li, TANG Lin, ZUO Zhongqiu, et al. Research on comprehensive evaluation of high voltage shunt capacitor based on coefficient of variation method and grey correlation degree[J]. Power Capacitor & Reactive Power Compensation , 2023, 44(5):27-32.
CHENG Lu,LI Zhou,LIU Wenfeng. Design optimization of power capacitor major insulation based on partial discharge performance[C]//International Conference on Condition Monitoring and Diagnosis(CMD).Xi’an:IEEE,2016:282-286.
UETA G,TSUBOI T,TAKAMI Jun,et al.Insulation characteristics of gas insulated switchgear under lightning impulse and ac superimposed voltage[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2014,21(3):1026-1034.
WU Guangning,ZHOU Liren,ZHANG Xueqin,et al.Study on the failure factors of composite insulation in high-voltage storage capacitors[J]. IEEE Transactions on Plasma Science,2010,38(2):186-193.
电力用电容式电压互感器使用：DL/T 1251—2013[S].2013.
Technical specification of power capacitance voltage transformer for use:DL/T 1251—2013[S].2013.
王云杉,周远翔,李光范,等.油纸绝缘介质的空间电荷积聚与消散特性[J].高电压技术,2008,34(5):873-877.
WANG Yunsha, ZHOU Yuanxiang, LI Guangfan, et al.Space chatge phenomena in oil-paper insulation materials under high voliage direct current[J]. High Voltage Engineering, 2008, 34(5):873-877.
GREAVES,W R,FOWLER E P,GOODINGS D R.The direct piezoelectric effect in extruded polyethylene[J]. Journal of Materials Science,1974(10):1602-1608.
AHMED N H,SRINIVAS N N.Review of space charge measurements in dielectrics[J]. IEEE Transactions on Dielectrics and Electrical Insulation,1997,4(5):644-656.
王辉,李晓军,李庆宇,等.基于偏压热刺激电流法的油纸绝缘介电性能研究[J].绝缘材料,2019,52(1):47-51.
WANG Hui, LI Xiaojun, LI Qingyu, et al.Study on dielectric properties of oil-paper insulation based on bias thermally stimulated current method[J]. Insulating Materials, 2019, 52(1):47-51.
夏源,杨丽君,吕晓露,等.基于介质响应电流频变特性的油纸绝缘受潮状态评估方法[J].电工技术学报,2024,39(11):34443456.
XIA Yuan, YANG Lijun, LYU Xiaolu, et al.Evaluation method of oil-paper insulation damp state based on the frequency-dependent characteristics of dielectric response current[J]. Transactions of China Electrotechnical Society, 2024, 39(11):3444-3456.
DOUGHTY K,DAS-GUPTA D K,COOPER D E. Anomalous polarization effects in low density polyethylene with AC charging[C]//Conference on Electrical Insulation & Dielectric Phenomena (CEIDP).Hill Falls,USA:IEEE,1983:460-466.
LAURENT C,TEYSSEDRE G,ROY S L,et al.Charge dynamics and its energetic features in polymeric materials[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2013,20(2):357-381.
HANLEY T L,BURFORD R P,FLEMING R J,et al. A general review of polymeric insulation for use in HVDC cables[J]. IEEE Electrical Insulation Magazine,2003,19(1):13-24.
XU Zhiqiang,SU Wen,CHEN G. Space charge properties of PPLP insulation[C]//IEEE Conference on Electrical Insulation and Dielectric Phenomena(CEIDP).Toronto:IEEE,2016:153-156.
OCHIAI S,ITO M,MIZUTANI T,et al.TSC in silicone oil/polypropylene system and their interaction[J]. IEEE Translation Journal on Magnetics in Japan,1983,103(12):695-700.
0
浏览量
5
下载量
0
CSCD
- 网络PDF下载
- Meta-XML下载
- BibTeX下载
- Endnote下载
- RefMan 下载
- NoteExpress下载
- NoteFirst下载
关联资源
相关文章
相关作者
相关机构
- 技术支持由北京北大方正电子有限公司提供 陕ICP备05005324号-4
陕公网安备 61010402000197 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies