Research and Discussion on Abnormal Dielectric Loss of the Lower Section Capacitor of 330 kV Film-paper Insulated CVT in a 500 kV Substation

CHEN Yitong; LIU Congcong; TAN Zhanpeng; LI Juntao; ZHOU Jia; LIN Jiaju

doi:10.14044/j.1674-1757.pcrpc.2025.06.010

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Research and Discussion on Abnormal Dielectric Loss of the Lower Section Capacitor of 330 kV Film-paper Insulated CVT in a 500 kV Substation

POWER CAPACITOR & REACTIVE POWER COMPENSATION | Instrument Transformer

Research and Discussion on Abnormal Dielectric Loss of the Lower Section Capacitor of 330 kV Film-paper Insulated CVT in a 500 kV Substation
330 kV膜纸绝缘结构电容式电压互感器下节电容介损异常研究
Dongguan Power Supply of Guangdong Power Grid Co.，Ltd.，Guangdong Dongguan 523000，China
Vol. 46, Issue 6, Pages: 81-88(2025)
DOI：10.14044/j.1674-1757.pcrpc.2025.06.010
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CHEN Yitong, LIU Congcong, TAN Zhanpeng, et al. Research and Discussion on Abnormal Dielectric Loss of the Lower Section Capacitor of 330 kV Film-paper Insulated CVT in a 500 kV Substation[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(6): 81-88.
DOI：

CHEN Yitong, LIU Congcong, TAN Zhanpeng, et al. Research and Discussion on Abnormal Dielectric Loss of the Lower Section Capacitor of 330 kV Film-paper Insulated CVT in a 500 kV Substation[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(6): 81-88. DOI： 10.14044/j.1674-1757.pcrpc.2025.06.010.

摘要

电容式电压互感器（CVT）是用于电力系统中测量、保护和计量的重要电气设备，广泛应用于110 kV及以上电压等级变电站，其绝缘状态对电力系统安稳运行有重要影响。现场试验中常以介质损耗因数（tan δ）测试作为判断电容式电压互感器设备绝缘状态的依据，然而部分采用膜纸复合绝缘结构的电容式电压互感器中存在Garton效应（Garton effect），在10 kV及以下介损试验中有时会出现介质损耗因数偏高等异常数据，并不能反映设备的真实绝缘状态。本文针对一起330 kV膜纸绝缘电容式电压互感器下节电容器因Garton效应介损异常偏高现象进行分析，提出电容式电压互感器现场试验中Garton效应的判定与处理应对方法，为电容式电压互感器介损测量与绝缘状态判别提供了科学参考，对于维持电网运行的可靠性、提升经济效益具有重大意义。

Abstract

Capacitive voltage transformer（CVT）is an important electrical equipment in power system for measurement，protection and metering，and is widely used in substations at 110 kV and above. Its insulation condition has a significant impact on the stable operation of power system. In on-site tests，the dielectric loss factor（tan δ）is often used as the base for judging the insulation condition of CVT. However，in some CVT with film-paper composite insulation structure the Garton effect is existed. Sometimes，such abnormal data as high tan δ may occur in the dielectric loss test at 10 kV and below，which cannot reflect the real insulation condition of the equipment. In this paper a case of abnormally high dielectric loss in the lower section capacitor of a 330 kV film-paper insulated CVT due to the Garton effect is analyzed，the determination and handling methods of the Garton effect in on-site tests of CVT are proposed，providing a scientific reference for the dielectric loss measurement and insulation condition judgment of CVT. This is of great significance for maintaining the operation reliability of power grid and improving economic benefits.

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references

童涛，徐碧川，袁思凡，等.一起电容式电压互感器二次电压异常事故分析[J].电瓷避雷器，2022（2）：98-104.

TONG Tao，XU Bichuan，YUAN Sifan，et al. A CVT secondary voltage abnormal accident[J]. Insulators and Surge Arresters，2022（2）：98-104.

郭亮，李哲，李骁，等.雷电过电压引发电容式电压互感器铁磁谐振特性分析与防护研究[J].电瓷避雷器，2019（6）：147-151.

GUO Liang，LI Zhe，LI Xiao，et al. Analysis and prevention research of ferroresonance in capacitor voltage transformer caused by lightning overvoltage[J]. Insulators and Surge Arresters，2019（6）：147-151.

刘佳鑫，郎业兴，韦德福，等. 500 kV电容式电压互感器过热异常诊断分析[J].电力电容器与无功补偿，2018，39（6）：66-70.

LIU Jiaxin，LANG Yexing，WEI Defu，et al. Diagnosis and analysis of abnormal overheating of 500 kV capacitance voltage transformer[J]. Power Capacitor & Reactive Power Compensation，2018，39（6）：66-70.

赵铁羽. 220 kV电容式电压互感器介损试验不拆线测量方法误差分析[J].变压器，2019，56（8）：57-59.

ZHAO Tieyu. Error analysis of 220 kV capacitor voltage transformer dielectric loss test without disconnecting measurement method[J]. Transformer，2019，56（8）：57-59.

房金兰.关于电容式电压互感器技术发展的探讨[J].电力电容器与无功补偿，2013，34（1）：1-6.

FANG Jinlan. Discussion on technical development of capacitor voltage transformers[J]. Power Capacitor & Reactive Power Compensation，2013，34（1）：1-6.

凌子恕.高压互感器技术手册[M].北京：中国电力出版社，2005.

王欢，周峰，冯凌，等.电场对电容式电压互感器误差影响机理分析及验证研究[J].电力电容器与无功补偿，2021，42（1）：88-94.

WANG Huan，ZHOU Feng，FENG Ling，et al. Analysis and verification study on influence of electrical field on CVT's error[J]. Power Capacitor & Reactive Power Compensation，2021，42（1）：88-94.

王玲，冯宇，杨柳，等.电容式电压互感器谐波测量方法研究[J].电力电容器与无功补偿，2021，42（1）：95-100.

WANG Ling，FENG Yu，YANG Liu，et al. Study on harmonic measurement method of capacitor voltage transformer[J]. Power Capacitor & Reactive Power Compensation，2021，42（1）：95-100.

杜林，李永森，贺鹏，等.环境温度对CVT计量误差的影响[J].电力自动化设备，2020，40（6）：204-209.

DU Lin，LI Yongsen，HE Peng，et al. Influence of ambient temperature on CVT's measurement error[J]. Electric Power Automation Equipment，2020，40（6）：204-209.

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 transformer based on fuzzy analysis of error condition[J]. Electrical Measurement & Instrumentation，2024，61（4）：73-80.

吴奇松，夏君宇，赵国庆，等.CVT电容分压器末端放电故障分析[J].变压器，2024，61（1）：62-65.

WU Qisong，XIA Junyu，ZHAO Guoqing，et al. Analysis of discharge fault at end screen of CVT capacitor voltage divider[J]. Transformer，2024，61（1）：62-65.

陈介夫，孙昊，李刚，等.基于激光诱导等离子体的Mach-Zehnder干涉法测量气体介质恢复特性的研究[J].高压电器，2024，60（12）：199-205.

CHEN Jiefu，SUN Hao，LI Gang，et al. Research on gaseous medium recovery characteristics measurement by Mach-Zehnder interferometry based on laser-induced plasma[J].High Voltage Apparatus，2024，60（12）：199-205.

林镕兴，王扬程，陈志鹏，等.气体介质影响下梅花触头载流磨损特性与电接触寿命预测[J].电力工程技术，2023，42（6）：197-205.

LIN Rongxing，WANG Yangcheng，CHEN Zhipeng，et al. Current-carrying friction characteristics and electrical contact life prediction of plum blossom contacts under the influence of gas medium[J]. Electric Power Engineering Technology，2023，42（6）：197-205.

杨硕亮，任春阳，赵含，等.天然酯绝缘油与电容式电压互感器的相容性研究[J].变压器，2024，61（7）：42-46.

YANG Shuoliang，REN Chunyang，ZHAO Han，tal.Study on compatibility between natural ester insulating oil and capacitive voltage transformer[J].Transformer，2024，61（7）：42-46.

赵睿，景瑞斌，赵龙，等.绝缘介质理化特性辅助油浸式电抗器故障定位及诊断[J].变压器，2023，60（4）：62-66.

ZHAO Rui，JING Ruibin，ZHAO Long，et al. Physical and chemical characteristics of insulating medium assist fault location and diagnosis of oil-immersed reactor[J].Transformer，2023，60（4）：62-66.

马高权，周娜，谢蒙飞，等.基于GWO-KELM模型的变压器油纸套管典型绝缘故障辨识方法[J].电网与清洁能源，2023，39（5）：38-48.

MA Gaoquan，ZHOU Na，XIE Mengfei，et al. A typical insulation fault identification method of the transformer oilpaper bushing based on theGWO-KELMmodel[J].Power System and Clean Energy，2023，39（5）：38-48.

刘坤雄，张小庆，赵铭，等.基于CVT宽频传递模型的杂散电容分步辨识方法[J].高压电器，2023，59（12）：55-62.

LIU Kunxiong，ZHANG Xiaoqing，ZHAO Ming，et al. Stepwise identification method of stray capacitance based on wideband transfer model ofCVT[J]. High Voltage Apparatus，2023，59（12）：55-62.

孙红梅，张凯，马瑾，等.500 kV变压器本体介质损耗因数温度换算研究[J].东北电力技术，2023，44（4）：30-32.

SUN Hongmei，ZHANG Kai，MA Jin，et al. Research on temperature conversion of dielectric loss factor of 500 kV transformer[J].Northeast Electric Power Technology，2023，44（4）：30-32.

何聪，张炜，李良书，等.交流叠加冲击电压下环氧绝缘内部气隙局部放电特性[J].电网与清洁能源，2023，39（3）：33-39.

HE Cong，ZHANG Wei，LI Liangshu，et al. PD characteristics of void in epoxy insulation under AC and impulse superimposed voltage[J].Power System and Clean Energy，2023，39（3）：33-39.

李博文，贺达，杨智，等.CVT铁磁谐振过电压的抑制与不同故障下二次电压特征分析[J].浙江电力，2023，42（7）：38-46.

LI Bowen，HE Da，YANG Zhi，et al. Suppression of ferromagnetic resonance overvoltage in CVT and feature analysis of secondary voltage under different faults[J].Zhejiang Electric Power，2023，42（7）：38-46.

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.

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.

方文睿，唐雄民，江天鸿，等.脉冲激励下介质阻挡放电负载的特性研究[J].高压电器，2024，60（5）：171-178.

FANG Wenrui，TANG Xiongmin，JIANG Tianhong，et al. Research on characteristics of dielectric barrier discharge load under pulse excitation[J]. High Voltage Apparatus，2024，60（5）：171-178.

徐鹏，赵文翰，盛智蕾，等. Garton效应对介损测试的影响及对策[J].电力电容器与无功补偿，2020，41（1）：118-122.

XU Peng，ZHAO Wenhan，SHENG Zhilei，et al. Influence and countermeasures of Garton effect on the measurement of dielectric loss test[J]. Power Capacitor & Reactive Power Compensation，2020，41（1）：118-122.

沈曼盛，周路遥，詹江杨，等.断路器并联电容介质损耗超标分析[J].浙江电力，2018，37（12）：82-85.

SHEN Mansheng，ZHOU Luyao，ZHAN Jiangyang，et al. Analysis on exceeded dielectric loss of shunt capacitor in circuit breaker[J]. Zhejiang Electric Power，2018，37（12）：82-85.

王少华，方玉群. Garton效应及其对容性设备高压介损测量的影响[J].电工电气，2011（9）：51-53.

WANG Shaohua，FANG Yuqun. Garton effect and its influence on high-voltage dielectric loss measurement for capacitive equipment[J]. Electrotechnics Electric，2011（9）：51-53.

何文志. Garton效应对套管介损测量的影响[J].电气技术，2014（1）：65-67.

HE Wenzhi. Analysis of the influence of Garton effect on bushing dielectric loss measurement[J]. Electrical Engineering，2014（1）：65-67.

王冰，李学斌，康激扬，等. 220 kV电容式电压互感器过热故障原因分析[J].东北电力技术，2015，36（5）：27-29.

WANG Bing，LI Xuebin，KANG Jiyang，et al. Cause analysis of 220 kV capacitor voltage transformer overheating[J]. Northeast Electric Power Technology，2015，36（5）：27-29.

杨洋，许强，陈安明，等.某500 kV开关断口间并联电容器的高压介损诊断及分析[J].电力电容器与无功补偿，2011，32（5）：64-67.

YANG Yang，XU Qiang，CHEN Anming，et al. High voltage dielectric loss diagnosis and analysis of shunt capacitors between breaks of 500 kV circuit breaker[J]. Power Capacitor & Reactive Power Compensation，2011，32（5）：64-67.

左文启，汪倩，谢励耘，等. Garton效应对膜纸复合绝缘电容器介损测量值的影响及对策[J].绝缘材料，2010，43（1）：71-74.

ZUO Wenqi，WANG Qian，XIE Liyun，et al. Influence of Garton effect on the measurement values of dielectric loss of film-paper composite dielectric capacitor and some counter measures[J]. Insulating Materials，2010，43（1）：71-74.

杨贤，马志钦，付一丁，等. Garton效应对电容式电压互感器介损测量影响研究[J].变压器，2018，55（5）：52-55.

YANG Xian，MA Zhiqin，FU Yiding，et al. Influence of Garton effect on dielectric loss measurement of capacitor voltage transformer[J]. Transformer，2018，55（5）：52-55.

姜雄伟，金涌涛，韩睿，等.热老化下双层聚酯薄膜空间电荷特性的试验与数值仿真研究[J].高压电器，2023，59（3）：61-68.

JIANG Xiongwei，JIN Yongtao，HAN Rui，et al. Research on test and numerical simulation of space charge characteristics of double layer thermally aged polyester film[J]. High Voltage Apparatus，2023，59（3）：61-68.

何杰，吕永红，王四保，等. 500 kV断路器均压电容器介质损耗超标分析[J].中国电力，2011，44（5）：34-37.

HE Jie，LYU Yonghong，WANG Sibao，et al. Studies on hyper-scaling dielectric loss of grading capacitors of 500 kV breakers[J]. Electric Power，2011，44（5）：34-37.

文峰，谭宁.某变电站500 kV均压电容器介质损耗超标分析[J].贵州电力技术，2014，17（10）：53-54.

WEN Feng，TAN Ning. The analysis of a substation 500 kV equalizing capacitor dielectric loss exceed the standard[J]. Guizhou Electric Power Technology，2014，17（10）：53-54.

高燃，胡武炎，吴胜，等.一起500 kV断路器用均压电容器缺陷的综合分析[J].电力电容器与无功补偿，2015，36（5）：66-69.

GAO Ran，HU Wuyan，WU Sheng，et al. Comprehensive analysis on defects of grading capacitor for 500 kV circuit breaker[J]. Power Capacitor & Reactive Power Compensation，2015，36（5）：66-69.

BARTNIKAS R. Dielectric loss in insulating liquids[J]. IEEE Trans，Electrical Insulation，1967，2（1）：33-54.

张国豪，李化，林福昌，等.金属化聚丙烯膜电容器自愈产气特性与保护技术[J].高压电器，2024，60（6）：197-202.

ZHANG Guohao，LI Hua，LIN Fuchang，et al.Study on selfhealing gas generation characteristics and protection technology of metallized polypropylene film capacitor[J]. High Voltage Apparatus，2024，60（6）：197-202.

GARTON G G. Dielectric loss in thin films of insulating liquids[J]. Journal of IEE，1947，88（23）：23-40.

许培俊，韦会逆，何运华，等.基于超疏水滤膜的绝缘油多级过滤除水新工艺[J].高压电器，2024，60（4）：207-213.

XU Peijun，WEI Huini，HE Yunhua，et al.New technology of multi-stage filtration of water removal of insulating oil based on super-hydrophobic filter membrane[J]. High Voltage Apparatus，2024，60（4）：207-213.

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