Observation on the Characteristics of Long-Term Partial Discharge Sparseness of Surface Metal Particle in Gas Insulated Switch
Zhang Liangen1, Lu Shijie1, Li Chengrong1, Cui Boyuan2, Wu Yuyi2
1. State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources North China Electric Power University Beijing 102206 China; 2. High Voltage Research Institute China Electric Power Research Institute Beijing 100192 China
Abstract：According to gas insulated switch insulation failure statistics, the surface failure accounts for the highest proportion. However, the defects detected by partial discharge are mostly air gaps and floating discharges, and the cases of surface discharge are rarely found. It is essential to study the effectiveness of the current on-site PD detection method for the detection of surface discharge defects. This paper designed a metal particle attached to the GIS insulator. Under the condition of constant voltage application, based on the full real-time UHF detection system, the long-term development process of the model discharge was studied. The sparsity characteristics of the surface metal particle in the long-term development stage were revealed, including the large dispersion of the discharge interval, varied from several seconds to several hours. The evaluation parameters of effective discharge capture probability Pe and effective spectrum capture probability PG were proposed. Through the Pe and PG curves, it was found that the existing GIS equipment online monitoring device had a small success rate (only 3.4%) for the surface discharge capture, and the probability of live detection capturing was low (only 6.5%). On this basis, a method to enhance the detection rate of the real-time acquisition system and extend the detection duration was proposed.
张连根, 路士杰, 李成榕, 崔博源, 吴昱怡. 气体绝缘开关中表面金属异物长期局部放电稀疏性特征的观测[J]. 电工技术学报, 2019, 34(18): 3928-3936.
Zhang Liangen, Lu Shijie, Li Chengrong, Cui Boyuan, Wu Yuyi. Observation on the Characteristics of Long-Term Partial Discharge Sparseness of Surface Metal Particle in Gas Insulated Switch. Transactions of China Electrotechnical Society, 2019, 34(18): 3928-3936.
[1] Schichler U, Koltunowicz W, Endo F, et al.Risk assessment on defects in GIS based on PD diagnostics[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2013, 20(6): 2165-2172. [2] Tenbohlen S, Gulski E, Koltunowic Z.Guidelines for partial discharge detection using conventional (IEC 60270) and unconventional methods[J]. Cige Technical Brochure 622, 2016, 10(288): 25-29. [3] Schichler U, Koltunowicz W, Gautschi D, et al.UHF partial discharge detection system for GIS: appli- cation guide for sensitivity verification[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2016, 23(3): 1313-1321. [4] 王伟平, 何炳锋. 基于特高频法GIS局部放电在线检测技术的分析与应用[J]. 高压电器, 2014, 51(4): 183-187. Wang Weiping, He Bingfeng.Analysis and appli- cation of on-line monitoring technique of partialdis- charge for GIS based on UHF method[J]. High Voltage Apparatus, 2014, 51(4): 183-187. [5] 毕明利. GIS设备局部放电在线监测系统分析[J]. 高电压技术, 2015, 41(增刊): 12-15. Bi Mingli.Analysis of on-line monitoring system for partial discharge of GIS equipment[J]. High Voltage Technology, 2015, 41(S): 12-15. [6] Chen Fuan, Tang Huizeng, Li Honggang.Application of on-line ultrasonic and uhf partial discharge detection in 1000kv GIS: applied mechanics and materials[J]. Applied Mechanics and Materials, 2014, 644(650): 3480-3484. [7] Schichler U, Koltunowicz W, Gautschi D, et al.UHF partial discharge detection system for GIS: application guide for sensitivity verification: CIGRE WG D1.25[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2016, 23(3): 1313-1321. [8] 季洪鑫, 李成榕, 马国明, 等. 冲击电压下气体绝缘开关设备悬浮缺陷放电特征[J]. 电工技术学报, 2017, 32(6): 256-264. Ji Hongxin, Li Chengrong, Ma Guoming, et al.Characteristic analysis of gas insulated switchgear suspension defect under impulse voltage[J]. Transa- ctions of China Electrotechnical Society, 2017, 32(6): 256-264. [9] 郑晓光, 郑宇, 唐念, 等. GIS内环氧树脂绝缘沿面放电强度与产气关联规律的模拟实验[J]. 电工技术学报, 2015, 30(17): 172-179. Zheng Xiaoguang, Zheng Yu, Tang Nian, et al.Analog experiment on the relationship between the intensity of epoxy solid insulation surface discharge and the increasing law of characteristic gases in GIS[J]. Transactions of China Electrotechnical Society, 2015, 30(17): 172-179. [10] 国家电网公司运维检修部. 电网设备状态检测技术应用典型案例: 2011—2013年[M]. 北京: 中国电力出版社, 2014. [11] 吕鸿. 2013年南方电网和广东电网高压开关运行情况及典型故障分析[Z]. 2014. [12] 唐炬, 张晓星, 曾福平. 组合电器设备局部放电特高频检测与故障诊断[M]. 北京: 科学出版社, 2016. [13] 卢启付, 李端娇, 唐志国. 局部放电特高频检测技术[M]. 北京: 中国电力出版社, 2017. [14] 李颖毅. 变电设备带电检测与在线监测应用成果案例集[M]. 北京: 中国电力出版社, 2016. [15] 路俊勇, 张婷, 司刚全, 等. GIS悬浮电极缺陷局部放电测量与分析[J]. 高压电器, 2015, 51(5): 151-156. Lu Junyong, Zhang Ting, Si Gangquan, et al.Measurement and analysis of partial discharge on floating electrode defect in GIS[J]. High Voltage Apparatus, 2015, 51(5): 151-156. [16] Blufpand S, Mor A R, Morshuis P, et al.Partial discharge recognition of insulation defects in HVDC GIS and a calibration approach[C]//Electrical Insulation Conference (EIC), Sealtle, USA, 2015: 564-657. [17] Zhang Haining, Kang Jun, Liao Peng, et al.The study of the partial discharge characteristics of floating potential defects in GIS[J]. Advanced Materials Research, 2014, 860(3): 2186-2189. [18] 周广, 刘勇, 金正洪, 等. 在线特高频技术在1000kV HGIS局放监测中的应用[J]. 华中电力, 2011, 24(5): 57-62. Zhou Guang, Liu Yong, Jin Zhenghong, et al.Application of on-line UHF partial discharge detection in 1000kV HGIS[J]. Huazhong Power, 2011, 24(5): 57-62. [19] 王红梅, 丁登伟, 贾志杰, 等. 恒压下GIS盆式绝缘子表面缺陷的长间歇性放电特性研究[J]. 中国电机工程学报, 2018, 38(20): 6188-6194. Wang Hongmei, Ding Dengwei, Jia Zhijie, et al.Research on intermittent discharge characteristics of defects on the surface of discinsulators of GIS under long-time constant voltage[J]. Proceedings of the CSEE, 2018, 38(20): 6188-6194. [20] 冯洋, 黄宏华, 姜一军, 等. 特高压变电站GIS局放在线监测技术提升措施及案例分析[J]. 高压电器, 2017, 53(10): 227-232. Feng Yang, Huang Honghua, Jiang Yijun, et al.Improvement measures and case analysis of partial discharge on-line monitoring technologies for UHV[J]. High Voltage Apparatus, 2017, 53(10): 227-232. [21] Shiyang T, Xu C, Wenshan W, et al.An empirical study on the sensing characteristics of 1100kV GIS UHF online monitoring instruments[C]//China International Conference on Electricity Distribution, Xi’an, China, 2016: 1-5. [22] 张强, 李成榕. X射线激励下局部放电的研究进展[J]. 电工技术学报, 2017, 32(8): 22-32. Zhang Qiang, Li Chengrong.Review on X-ray induced partial discharge[J]. Transactions of China Electrotechnical Society, 2017, 32(8): 22-32. [23] 鲁杨飞, 李庆民, 刘涛, 等. 高频电压下表面电荷分布对沿面放电发展过程的影响[J]. 电工技术学报, 2018, 33(13): 3059-3070. Lu Yangfei, Li Qingmin, Liu Tao, et al.Effect of surface charge on the surface discharge evolution for polyimide under high frequency voltage[J]. Transa- ctions of China Electrotechnical Society, 2018, 33(13): 3059-3070. [24] 周文俊, 刘宇舜, 李鹏飞, 等. 基于特高频法检测电气设备局部放电的改进Vivaldi天线[J]. 电工技术学报, 2017, 32(12): 259-267. Zhou Wenjun, Liu Yushun, Li Pengfei, et al.Modified Vivaldi antenna applied to detect partial discharge in electrical equipment based on ultra-high frequency method[J]. Transactions of China Electro- technical Society, 2017, 32(12): 259-267. [25] 中国高压开关设备标准化技术委员会. GB 7674- 2008 72.5kV及以上气体绝缘金属封闭开关设备[S]. 2008. [26] 全国电力设备状态维修与在线监测标准化技术委员会. DL/T 1498.4-2017 气体绝缘金属封闭开关设备局部放电特高频在线监测装置[S]. 2017. [27] 国家电网公司科技部. Q/GDW 11059.2-2013 气体绝缘金属封闭开关设备局部放电带电测试技术现场应用导则2: 特高频法[S]. 2013.
2019, Vol. 34 
