“快速发展型”放电故障及其对油纸绝缘的损伤特性

doi:10.19595/j.cnki.1000-6753.tces.200932

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Abstract The insulation field strength of UHV transformers is close to the design limit, and the process of breakdown caused by partial discharge under high field strength has the characteristic of rapid development. There were many cases of “rapid development type” discharge failure frequently occurred in the delivery and handover tests of UHV transformers, only a few minutes from partial discharge generation to main insulation breakdown or near breakdown, which caused great hidden dangers to the operation of UHV transformers. In order to explore the forming reason of the “rapid development type” discharge failure and its damage characteristics to oil-paper insulation, this paper studied the U-t characteristic curve and electric life model of oil-paper insulation under extremely non-uniform electric field, and proposed to use U-t characteristic curve to distinguish between “ordinary type” and “rapid development type” discharge failures. The results indicate that under extremely non-uniform electric field, the electrical life U-t characteristic of oil-paper insulation follows IPM (inverse power model). The voltage tolerance index n in IPM of different electric field regions can be used as the basis for distinguishing the two types of discharge. From the damage marks of oil-paper insulation, the “rapid development type” discharge has similarities and respective characteristics with the “ordinary type” discharge. Both discharges produce corona discharge and gliding spark discharge, accompanied by white spots and gas generation. The difference is that the “rapid development type” discharge develops fast and the damage to pressboard is serious, which will produce bright discharge channel and dendritic carbon marks on the surface of pressboard, while the “ordinary type” discharge develops relatively slowly and has less damage to the pressboard, only dotted carbon marks are produced at the tip of the needle. Dendritic carbon marks are the main feature of the “rapid development type” discharge failure, which can be divided into two stages of rapid growth and slow growth, and conforms to the growth law of electrical tree in insulation materials. This paper can provide a reference for distinguishing between the “rapid development type” and the “ordinary type” discharge failures, and lay a foundation for mastering the “rapid development type” discharge failure rules and effective early warning and diagnosis.

Key words： “Rapid development type” discharge failure; “ordinary type” discharge failure; oil-paper insulation U-t characteristic carbon mark growth model

Received: 29 July 2020

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TM855

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	Wei Yiheng
	Yang Lijun
	Xu Zhiren
	Yang Xu
	Liu Yi

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Wei Yiheng,Yang Lijun,Xu Zhiren等. The Rapid-Development-Type Discharge Failure and Its Damage Characteristics to Oil-Paper Insulation[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 1020-1030.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200932 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I4/1020

[1] 米彦, 桂路, 刘露露, 等. 环氧树脂针-板缺陷在指数衰减脉冲和正弦电压作用下的局部放电特性[J]. 电工技术学报, 2020, 35(2): 425-434.
Mi Yan, Gui Lu, Liu Lulu, et al.Partial discharge characteristics of epoxy resin needle-plate defect under exponential decay pulse and sinusoidal voltage[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 425-434.
[2] 唐志国, 蒋佟佟, 于智强, 等. 高频电流法用于电容器出厂局部放电检测的研究[J]. 电机与控制学报, 2019, 23(3): 18-25.
Tang Zhiguo, Jiang Tongtong, Yu Zhiqiang, et al.High frequency current for the factory inspection of capacitor PD detection[J]. Electric Machines and Control, 2019, 23(3): 18-25.
[3] 廖瑞金, 段炼, 汪可, 等. 交流电压下油纸绝缘针板放电特性[J]. 高电压技术, 2014, 40(3): 648-654.
Liao Ruijin, Duan Lian, Wang Ke, et al.Partial discharge characteristics of point-plane model in oil-paper insulation under AC voltage[J]. High Voltage Engineering, 2014, 40(3): 648-654.
[4] 齐波, 魏振, 李成榕, 等. 交直流复合电场中油纸绝缘沿面放电现象及特征[J]. 电工技术学报, 2016, 31(10): 59-67.
Qi Bo, Wei Zhen, Li Chengrong, et al.The phenomena and characteristics of oil-paper insulation surface discharge under AC and DC voltage[J]. Transactions of China Electrotechnical Society, 2016, 31(10): 59-67.
[5] 满玉岩, 董艳唯, 王伟, 等. 基于局部放电能量的油纸绝缘典型缺陷放电严重程度评估方法[J]. 高压电器, 2019, 55(8): 223-229.
Man Yuyan, Dong Yanwei, Wang Wei, et al.Discharge severity evaluation method for typical defects of oil-paper insulation based on partial discharge energy[J]. High Voltage Apparatus, 2019, 55(8): 223-229.
[6] 解浩, 唐建伟, 严家明, 等. 热老化过程中油浸绝缘纸局部放电能量特性分析[J]. 绝缘材料, 2018, 51(4): 69-74.
Xie Hao, Tang Jianwei, Yan Jiaming, et al.Analysis of partial discharge energy characteristics of oil- immersed insulating paper during thermal ageing process[J]. Insulation Materials, 2018, 51(4): 69-74.
[7] 廖瑞金, 严家明, 杨丽君, 等. 局部放电对油浸绝缘纸表面损伤特性研究[J]. 中国电机工程学报, 2011, 31(10): 129-137.
Liao Ruijin, Yan Jiaming, Yang Lijun, et al.Characteristics of partial discharge-caused surface damage for oil-impregnated insulation paper[J]. Proceedings of the CSEE, 2011, 31(10): 129-137.
[8] 毛一之, 王秀春. 超高压变压器绝缘结构中的树枝状放电[J]. 电工技术学报, 1999, 26(5): 40-43.
Mao Yizhi, Wang Xiuchun.The electrical tree in the insulation of the ultra-high voltage transformers[J]. Transactions of China Electrotechnical Society, 1999, 26(5): 40-43.
[9] 韩贵, 王文端, 王淑娟, 等. 电力变压器围屏爬电故障诊断[J]. 高电压技术, 1990, 7(2): 16-20.
Han Gui, Wang Wenduan, Wang Shujuan, et al.Diagnosis of creeping failure of power transformer enclosure[J]. High Voltage Engineering, 1990, 7(2): 16-20.
[10] 岳华山. 油纸绝缘针板放电发展过程的试验研究[D]. 北京: 华北电力大学, 2010.
[11] 刘霞, 于钦学, 钟力生, 等. 高压XLPE电缆绝缘V-t特性研究综述[J]. 南方电网技术, 2015, 9(10): 57-63.
Liu Xia, Yu Qinxue, Zhong Lisheng, et al.Review on research of V-t characteristics of HV XLPE cables[J]. Southern Power System Technology, 2015, 9(10): 57-63.
[12] 莫洋, 杨丽君, 鄢水强, 等. 掺杂纳米Al₂O₃对纤维绝缘纸电寿命的影响及机理[J]. 电工技术学报, 2018, 33(19): 4618-4626.
Mo Yang, Yang Lijun, Yan Shuiqiang, et al.Influence and mechanism of doped nano-Al₂O₃ on electrical life of cellulose insulating paper[J]. Transactions of China Electrotechnical Society, 2018, 33(19): 4618-4626.
[13] 杨丽君, 李仲轩, 姚人允, 等. 获取XLPE绝缘直流电压耐受指数的步进应力试验参数选取方法研究[J]. 电工技术学报, 2019, 34(24): 5244-5251.
Yang Lijun, Li Zhongxuan, Yao Renyun, et al.Selection of step-stress test parameters for obtaining DC voltage endurance coefficient of XLPE insu- lation[J]. Transactions of China Electrotechnical Society, 2019, 34(24): 5244-5251.
[14] Bian Haoran, Yang Lijun, Yao Renyun, et al.Method of selecting step stress test parameters for XLPE insulation DC voltage endurance coefficient[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2019, 26(3): 746-753.
[15] Bian Haoran, Yang Lijun, Ma Zhipeng, et al.Research on parameters of step-stress test to obtain life exponent of XLPE-material used in DC cable[C]//2018 IEEE International Conference on High Voltage Engineering and Application, Athens, Greece, 2018: 10-13.
[16] 陈善同. 电压寿命公式中n值的探讨[J]. 电线电缆, 1979, 28(5): 35-44.
Chen Shantong.Discussion on the value of n in voltage life formula[J]. Wire and Cable, 1979, 28(5): 35-44.
[17] 杨丽君, 廖瑞金, 李剑, 等. 用逐步升压法和Weibull参数估计油纸绝缘寿命[J]. 高电压技术, 2004, 30(6): 4-6.
Yang Lijun, Liao Ruijin, Li Jian, et al.Estimating the life of oil-paper insulation using the step-up method and Weibull parameters[J]. High Voltage Engineering, 2004, 30(6): 4-6.
[18] 刁常晋. 油纸绝缘局部放电的发展规律及严重程度的诊断[D]. 北京: 华北电力大学, 2013.
[19] 聂洪岩, 张潮海, 顾哲屹, 等. 局部放电条件下干式空心电抗器匝间绝缘的电老化特性研究[J]. 电工技术学报, 2018, 33(13): 3071-3079.
Nie Hongyan, Zhang Chaohai, Gu Zheyi, et al.The research on electrical aging characteristics of turn- to-turn insulation of dry-type air core reactor under partial discharge[J]. Transactions of China Electro- technical Society, 2018, 33(13): 3071-3079.
[20] Guide for the statistical analysis of electrical insulation breakdown data:IEC 62539—2007[S]. Piscataway: IEEE, 2007.
[21] 曹雯, 宋倩文, 申巍, 等. 环氧/纸复合材料直流耐压寿命模型的估计方法[J]. 电工技术学报, 2019, 34(18): 3750-3758.
Cao Wen, Song Qianwen, Shen Wei, et al.Estimation methods of DC withstand voltage lifetime model for epoxy/paper composites[J]. Transactions of China Electrotechnical Society, 2019, 34(18): 3750-3758.
[22] 刘英, 姜晖, 曹晓珑. 现役交流XLPE电缆绝缘切片试样的交、直流耐压性能对比[J]. 高电压技术, 2017, 43(11): 3559-3567.
Liu Ying, Jiang Hui, Cao Xiaolong.Comparison of AC and DC voltage endurance properties of insulation sheet samples spirally-cut from existing AC XLPE cables[J]. High Voltage Engineering, 2017, 43(11): 3559-3567.
[23] 吴凡, 罗林根, 王辉, 等. 基于接收信号强度功率和最大似然估计的特高频局部放电测向方法[J]. 电工技术学报, 2020, 35(12): 2689-2697.
Wu Fan, Luo Lingen, Wang Hui, et al.RSSI- power-based direction of arrival estimation using maximum likelihood estimator and antenna array[J]. Transactions of China Electrotechnical Society, 2020, 35(12): 2689-2697.
[24] 王伟, 张鑫, 冯军基, 等. 基于特征气体能量的油纸绝缘放电缺陷识别方法[J]. 绝缘材料, 2018, 51(8): 43-49.
Wang Wei, Zhang Xin, Feng Junji, et al.Identifi- cation method of oil-paper insulation discharge defects based on characteristic gas energy[J]. Insulation Materials, 2018, 51(8): 43-49.
[25] 蒋雄伟, 贾志东, 谢恒. 绝缘材料老化寿命模型的研究进展[J]. 高电压技术, 2000, 26(3): 44-46.
Jiang Xiongwei, Jia Zhidong, Xie Heng.The development of aging models of insulation materi- als[J]. High Voltage Engineering, 2000, 26(3): 44-66.
[26] 程养春, 魏金清, 李成榕, 等. 局部放电作用下变压器匝间油纸绝缘加速劣化规律[J]. 电工技术学报, 2015, 30(18): 203-212.
Cheng Yangchun, Wei Jinqing, Li Chengrong, et al.Development rules of accelerated degradation of oil-paper insulation between turns in transformer windings induced by partial discharge[J]. Transa- ctions of China Electrotechnical Society, 2015, 30(18): 203-212.
[27] 杨国清, 刘庚, 王德意, 等. 超支化聚酯改性纳米SiO₂/环氧树脂的电树枝生长特性[J]. 电工技术学报, 2020, 35(20): 4415-4422.
Yang Guoqing, Liu Geng, Wang Deyi, et al.Growth characteristics of electric tree for nano-SiO₂/epoxy resin modified by hyperbranched polyester[J]. Transa- ctions of China Electrotechnical Society, 2020, 35(20): 4415-4422.
[28] 张晓虹, 石泽祥, 张双, 等. 基于局部放电特征研究蒙脱土/聚乙烯纳米复合材料的电树枝性能[J]. 电工技术学报, 2019, 34(23): 5049-5057.
Zhang Xiaohong, Shi Zexiang, Zhang Shuang, et al.Investigation on electrical tree resistance property of montmorillonite/polyethylene nanocomposites based on partial discharge characteristics[J]. Transactions of China Electrotechnical Society, 2019, 34(23): 5049-5057.
[29] 韩贵, 王淑娟. 油浸纸板沿面放电特性的研究[J]. 变压器, 1990, 8(2): 5-9.
Han Gui, Wang Shujuan.Study on the surface discharge characteristics of oil-impregnated paper- board[J]. Transformer, 1990, 8(2): 5-9.
[30] 郑晓泉, Chen G, Davies A E.交联聚乙烯电缆绝缘中的双结构电树枝特性及其形态发展规律[J]. 中国电机工程学报, 2006, 26(3): 79-85.
Zheng Xiaoquan, Chen G, Davies A E.Characteristic and developing law of a double structure electrical tree in XLPE cable insulation[J]. Proceedings of the CSEE, 2006, 26(3): 79-85.
[31] Montanari G C.Aging and life models for insulation systems based on PD detection[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1995, 2(4): 667-675.
[32] 张晓虹, 迟晓红, 高俊国, 等. 分形分析方法在电树枝结构研究中的应用[J]. 电工技术学报, 2013, 28(1): 14-20.
Zhang Xiaohong, Chi Xiaohong, Gao Junguo, et al.Application of practal analysis on researching shapes of electrical trees[J]. Transactions of China Electro- technical Society, 2013, 28(1): 14-20.