Partial Discharge Characteristics of Void Defect Inside A 126 kV GIS Post Insulator Under AC and DC Voltages

LIU Weidong; XU Yuan; YIN Ze; ZHAO Ke; FENG Rui; DU Fei

doi:10.13296/j.1001-1609.hva.2026.08.014

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Partial Discharge Characteristics of Void Defect Inside A 126 kV GIS Post Insulator Under AC and DC Voltages

Research & Analysis | 更新时间：2026-08-12

- Partial Discharge Characteristics of Void Defect Inside A 126 kV GIS Post Insulator Under AC and DC Voltages
- High Voltage Apparatus Vol. 62, Issue 8, Pages: 107-115(2026)
- 作者机构：
  
  清华大学电机工程与应用电子技术系，北京 100084
  中国电力科学研究院有限公司，北京 100192
  国网江苏省电力有限公司电力科学研究院，南京 211103
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.08.014
  CLC：
- Received：15 February 2026，
  
  Revised：2026-04-22，
  
  Published：16 August 2026
- 稿件说明：
移动端阅览
LIU Weidong, XU Yuan, YIN Ze, et al. Partial Discharge Characteristics of Void Defect Inside A 126 kV GIS Post Insulator Under AC and DC Voltages[J]. High Voltage Apparatus, 2026, 62(8): 107-115.
DOI：

LIU Weidong, XU Yuan, YIN Ze, et al. Partial Discharge Characteristics of Void Defect Inside A 126 kV GIS Post Insulator Under AC and DC Voltages[J]. High Voltage Apparatus, 2026, 62(8): 107-115. DOI： 10.13296/j.1001-1609.hva.2026.08.014.

摘要

环氧绝缘件作为气体绝缘开关设备（gas insulated switchgear，GIS）的重要组成部分，在浇注过程中可能产生气泡、裂纹等内部缺陷，影响设备运行可靠性。文中以实际存在内部气泡缺陷的126 kV支柱绝缘子为对象，开展交、直流电压下局部放电试验研究，对比了不同电压下绝缘内部气泡缺陷的局部放电特征差异。结果表明，该缺陷在交流和直流电压下的局部放电特性差异显著。交流电压下，放电信号频发，且在工频正负半周期内对称分布；最大放电量超过80 pC，脉冲电流信号重复率超过500次/s；特高频信号幅值最大350 mV左右，信号重复率维持在80～100次/s之间，远低于脉冲电流信号重复率。直流电压下，放电信号极为偶发，1 h内仅几次至几十次，甚至数小时内无任何放电信号。脉冲电流信号主要出现在电压上升期间，电压稳定后仅有少量低幅值信号；特高频信号频次远低于脉冲电流，且仅在电压上升过程中出现1～2次放电信号。直流电压下，放电量最大超过20 pC，特高频信号幅值最大约600 mV。文中研究结果可为评估交、直流电压下GIS绝缘内部缺陷危险程度提供有效支撑。

Abstract

Epoxy insulation part is an important component of gas insulated switchgear(GIS)

and such internal defects as voids and cracks may be generated during the casting process

which can affect the operation reliability of equipment. In this paper the 126 kV post insulator with void defect is taken as the object

the partial discharge(PD) test at AC and DC voltages is performed

and the differences in PD characteristics of internal void defect of the insualtor under different voltages are compared. The results indicate that PD characteristics of the same defect exhibit significant differences under AC and DC voltages. In case of AC voltage

the discharge signals occur frequently and are symmetrically distributed within the positive and negative half cycles of the power voltage. The maximum discharge amagnitude exceeds 80 pC and the repetition rate of pulse current signals exceeds 500 times/s. The maximum amplitude of ultra-high frequency(UHF)signals is about 350 mV

and the repetition rate of UHF signal is maintained between 80~100 times/s

far lower than that of pulse current signal. In case of DC voltage

discharge signals are extremely sporadic

with only a few to a dozen discharges within 1 h

and even no discharge for several hours.Pulse current signals primarily appear during the voltage rise process

and only a few low-amplitude signals are present after the voltage stabilizes. The repetition rate of UHF signals is much lower than that of the pulse cur rent signals

and only 1~2 UHF signals appear during the voltage rise process. In case of DC voltage

the maximum apparent charge can exceed 20 pC

and the UHF signal amplitude is approximately 600 mV. The research results in this paper can provide effective support for assessing the hazard level of internal insulatino defect in GIS under AC and DC voltages.

关键词

Keywords

references

Riechert U, Holaus W.Ultra high-voltage gas-insulated switchgeara technology milestone[J]. European Transactions on Electrical Power,2012,22(1):60-82.

南振乐,李振军,刘朋飞.复杂地形条件下的GIL工程设计[J].高压电器,2016,52(6):193-198.

Nan Zhenle, Li Zhenjun, Liu Pengfei.Engineering design of GIL used at complex terrain[J]. High Voltage Apparatus,2016,52(6):193-198.

Li Chuanyang, Zhang Changhong, Lyu Jinzhuang, et al.China's 10year progress in DC gas-insulated equipment: from basic research to industry perspective[J]. iEnergy,2022,1(4):400-433.

Hallas M, Neumann C, Hinrichsen V, et al.Commissioning and service experience with a ±550 kV DC GIL conducted in frame of a CIGRE prototype installation test[J]. IEEE Transactions on Power Delivery,2023,38(4):2843-2853.

申萌,王博,王子瑜,等. ±550 kV直流GIS长期带电试验研究[J]. 高压电器,2024,60(5):1-11.

Shen Meng, Wang Bo, Wang Ziyu, et al. Analysis on long term live test of ±550 kV DC GIS[J]. High Voltage Apparatus,2024,60(5):1-11.

何方,张琦立,魏书荣,等.考虑并网灵活性的大规模海上风电场集群接入系统规划研究[J]. 智慧电力,2024,52(9):33-40.

He Fang, Zhang Qili, Wei Shurong, et al. Planning of large-scale offshore wind farm cluster access system considering grid connected flexibility[J]. Smart Power,2024,52(9):33-40.

王亮,刘亚南,柳强,等.基于自启动系统的海上风电并网技术[J]. 电力电容器与无功补偿,2024,45(2):134-140.

Wang Liang, Liu Yanan, Liu Qiang, et al. Grid - connected technology of offshore wind power based on self-starting system[J]. Power Capacitor & Reactive Power Compensation,2024,45(2):134-140.

吴德贯,彭翔,李红元,等.一起500 kV GIL绝缘子炸裂故障分析[J]. 电瓷避雷器,2016(1):40-43.

Wu Deguan, Peng Xiang, Li Hongyuan, et al. Analysis of a 500 kV GIL insulator burst fault[J]. Insulators and Surge Arresters,2016 (1):40-43.

杜伯学,姚航,梁虎成,等.时变温差工况下直流GIL/GIS盆式绝缘子动态电场畸变抑制[J]. 电工技术学报,2024,39(9):2851-2859.

Du Boxue, Yao Hang, Liang Hucheng, et al. Electric field relaxation of basin spacer under variable temperature gradient in DC GIL/GIS[J]. Transactions of China Electrotechnical Society, 2024,39(9):2851-2859.

陈圣,徐博文,庚振新,等.基于几何形状及表面介电分布的GIL三支柱绝缘子优化设计[J]. 南方电网技术,2024,18(12):27-34.

Chen Sheng, Xu Bowen, Geng Zhenxin, et al. Optimization design of GIL three-pillar insulators based on geometric shape and surface dielectric distribution[J]. Southern Power System Technology, 2024,18(12):27-34.

李玄,尹奕淳,师伟,等.三支柱绝缘子微缺陷超声临界纵波探测方法与应用[J]. 电工技术学报,2025,40(21):6905-6921.

Li Xuan, Yin Yichun, Shi Wei, et al. Ultrasonic critical longitudinal wave detection method and application for microdefects in tripost insulators[J]. Transactions of China Electrotechnical Society, 2025,40(21):6905-6921.

张秋敏,马思维,孟然.改进YOLOv5s的绝缘子缺陷检测研究[J]. 电子设计工程,2025,33(10):181-185.

Zhang Qiumin, Ma Siwei, Meng Ran. Research on improving YOLOv5s for insulator defect detection[J]. Electronic Design Engineering,2025,33(10):181-185.

张滢滢,郝艳捧,米鸿儒,等. GIS绝缘子固化特征与缺陷产生机理研究进展[J/OL]. 高电压技术,1-16[2026-02-15]. https://doi. org/10. 13336/j. 1003-6520. hve. 20250476.

Zhang Yingying, Hao Yanpeng, Mi Hongru, et al. Progress on curing characteristics and defect generation mechanism of GIS insulators[J/OL]. High Voltage Engineering,1-16[2026-02-15]. https://doi. org/10. 13336/j. 1003-6520. hve. 20250476.

张兴辉,常文治,杜非,等. GIS局部放电多特征量传感研究进展[J]. 高压电器,2022,58(4):8-16.

Zhang Xinghui, Chang Wenzhi, Du Fei, et al. Research progress of multi-physics sensing in partial discharge ofGIS[J]. High Voltage Apparatus,2022,58(4):8-16.

Gao Wensheng, Ding Dengwei, Liu Weidong. Research on the typical partial discharge using the UHF detection method for GIS[J]. IEEE Transactions on Power Delivery,2011,26(4):2621-2629.

Gao Wensheng, Ding Dengwei, Liu Weidong, et al. Analysis of the intrinsic characteristics of the partial discharge induced by typical defects in GIS[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2013,20(3):782-790.

李星,丁登伟,许渊,等.特高频—超声波法联合的GIS/GIL局部放电信号降噪与缺陷定位[J]. 高电压技术,2025,51(5):2384-2393.

Li Xing, Ding Dengwei, Xu Yuan, et al. Signal denoising and defect localization for GIS/GIL partial discharge based on ultra-high frequency and ultrasound method united[J]. High Voltage Engineering,2025,51(5):2384-2393.

弓艳朋,彭江,毕建刚,等. GlS特高频传感器现场校验有效性影响因素[J]. 中国电力,2018,51(12):101-106.

Gong Yanpeng, Peng Jiang, Bi Jiangang, et al. Study on factors affecting validity of field calibration of GIS UHF sensors[J]. Electric Power,2018,51(12):101-106.

李军浩,韩旭涛,王昊天,等.电气设备局部放电检测技术述评:2015—2025[J]. 高电压技术,2025,51(7):3132-3158.

Li Junhao, Han Xutao, Wang Haotian, et al. Review of partial discharge detection technology in electrical equipment:2015—2025[J]. High Voltage Engineering,2025,51(7):3132-3158.

闫泽玉,刘云鹏,范晓舟,等.基于多感知双阶融合神经网络的GIS绝缘缺陷诊断技术[J]. 中国电机工程学报,2025,45(16):6535-6548.

Yan Zeyu, Liu Yunpeng, Fan Xiaozhou, et al. Diagnosis of GIS insulation defects based on multi-perception dual-order fusion neural network[J]. Proceedings of the CSEE,2025,45(16):6535-6548.

梁文滔.基于故障树的220 kV GIS设备典型故障分析及差异化运维策略[D]. 广州:华南理工大学,2023.

Liang Wentao. Typical fault analysis and differentiated operation andmaintenance strategy of 220 kV GIS equipment basedon fault tree analysis[D]. Guangzhou: South China University of Technology,2023.

费章君.局部放电检测方法和识别算法研究及在线监测系统开发[D]. 杭州:浙江大学,2024.

Fei Zhangjun. Detecting and identifying, and online monitoring of partial discharge[D]. Hangzhou: Zhejiang University,2024.

马宏明,周年荣,肖丹,等.交直流电压条件下GIS局部放电检测对比研究[J]. 中国电力,2014,47(3):125-129.

Ma Hongming, Zhou Nianrong, Xiao Dan, et al. Study on partial discharge detection in GIS under AC voltage and DC voltage[J]. Electric Power,2014,47(3):125-129.

卢武,杨华,张俊,等.直流GIS/GIL中金属微粒诱发沿面闪络的机理研究与抑制策略综述[J]. 高电压技术,2025,51(3):1010-1024.

Lu Wu, Yang Hua, Zhang Jun, et al. Review on mechanism study and suppression strategy of metal particles induced surface flashover inDC GIS/GIL[J]. High Voltage Engineering,2025,51 (3):1010-1024.

Okabe S, Ueta G, Utsumi T. Behavior of metallic particles in GIS under DC voltage[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(5):2889-2897.

黎大健,杨景刚,米楚明,等.基于超声波信号的GIS内自由金属颗粒危险评估研究[J]. 高压电器,2010,46(1):53-57.

Li Dajian, Yang Jinggang, Mi Chuming, et al. Risk assessment of basis of free metallic particles in GIS based on ultrasonic signal[J]. High Voltage Apparatus,2010,46(1):53-57.

刘鹏,李智凯,田汇冬,等.直流电压下气体绝缘输电线路中微粒运动特性研究及微粒陷阱效能分析[J]. 中国电机工程学报,2022,42(15):5740-5750.

Liu Peng, Li Zhikai, Tian Huidong, et al. Research on motion characteristics of metal particles and capture efficiency of particle traps in gas insulated transmission lines under DC voltage[J]. Proceedings of the CSEE,2022,42(15):5740-5750.

Geske M, Neumann C, Berg T, et al. Assessment of typical defects in gas-insulated DC systems by means of pulse sequence analysis based on UHF partial discharge measurements[C]//VDE High Voltage Technology 2020(ETG-Symposium),2020:1-8.

Neumann C, Hallas M, Hinrichsen V, et al. PD measurements on a DC gas-insulated transmission line (DC GIL) conducted in the frame of the prototype installation test according to recommendation ofCIGRE JWG D1/B3. 57[C]//VDE High Voltage Technology 2020(ETG-Symposium),2020:9-16.

李庆民,刘思华,王健,等.直流气体绝缘线路中自由金属微粒的局部放电特性与影响因素[J]. 高电压技术,2017,43(2):367-374.

Li Qingmin, Liu Sihua, Wang Jian, et al. Characteristics of partial discharges caused by free metal particle and influencing factors in DC gas insulated line[J]. High Voltage Engineering,2017,43(2):367-374.

孙继星,陈维江,李志兵,等.直流电场下运动金属微粒的带电估算与碰撞分析[J]. 高电压技术,2018,44(3):779-786.

Sun Jixing, Chen Weijiang, Li Zhibing, et al. Charge estimation and impact analysis of moving metal particle under DC electric field[J]. High Voltage Engineering,2018,44(3):779-786.

Abdul Madhar S, Mráz P, Rodrigo Mor A, et al. Study of corona configurations under DC conditions and recommendations for an identification test plan[J]. International Journal of Electrical Power&Energy Systems,2020(118):105820.

Luo Xinyu, Tang Ju, Pan Cheng, et al. Influence of pulse bursts on PD magnitude distributions in SF 6 gas under positive DC voltage[C ] //2018 IEEE International Conference on High Voltage Engineering and Application(ICHVE),2018:1-4.

许渊,刘卫东,陈维江,等. GIS绝缘子局部放电高灵敏测量方法及应用[J]. 中国电机工程学报,2020,40(5):1703-1712.

Xu Yuan, Liu Weidong, Chen Weijiang, et al. High-sensitivity measurement method and application of GIS spacer partial discharge[J]. Proceedings of the CSEE,2020,40(5):1703-1712.

IEC 60270:2025 High-voltage test techniques-charge-based measurement of partial discharges[S].

Li Xing, Liu Weidong, Xu Yuan, et al. Discharge characteristics and detectability of metal particles on the spacer surface in gasinsulated switchgears[J]. IEEE Transactions on Power Delivery, 2022,37(1):187-196.

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