半导体纸和铝箔作为套管芯体电容极板的局部放电特性差异及分析研究*

doi:10.11985/2021.02.008

摘要/Abstract

摘要：

套管芯体局部放电是引起套管故障的重要原因之一。传统“绝缘纸-铝箔-绝缘纸”结构为芯体的油纸绝缘套管已使用多年,为进一步优化油纸绝缘套管的芯体结构和绝缘性能,采用力学性能良好的半导体纸为电容极板,对“绝缘纸-铝箔-绝缘纸”和“绝缘纸-半导体纸-绝缘纸”两种结构体系在极不均匀电场下的工频击穿和局部放电特性开展对比研究。试验结果表明,当采用半导体纸作为电容极板时,能提高多层绝缘结构体系的起始局放电压与工频击穿电压,减少同等电压下多层结构体系的局部放电量和放电次数;相较于以铝箔作为电容极板的体系,电场分布仿真结果表明选用半导体纸的多层绝缘结构体系的电场最大值更小,有助于提升其绝缘性能。研究结果为油纸绝缘套管芯体材料的选择提供了理论参考。

关键词: 油纸绝缘套管, 半导体纸, 铝箔, 局部放电, 工频击穿

Abstract:

The partial discharge of bushing core is one of the important causes of bushing fault. Oil-paper insulating bushing with traditional structure of “insulation paper-aluminum foil-insulation paper” as core has been used for many years. In order to further optimize the core structure and insulation performance of oil-paper insulation bushing, the power frequency breakdown voltage and partial discharge characteristics of “insulation paper-aluminum foil-insulation paper” and “insulation paper-semiconductor paper-insulation paper” are compared under extremely uneven electric field by using semiconductor paper with good mechanical properties as capacitor plate. The results show that when the semiconductor paper is used as the capacitor plate, the initial partial discharge voltage and power frequency breakdown voltage of the multilayer insulation structure system can be increased, and the partial discharge quantity and discharge times of the multilayer insulation structure system under the same voltage can be reduced; Compared with using aluminum foil as capacitor plate, the simulation results of electric field distribution show that the maximum electric field of the multilayer insulation structure system with semiconductor paper is smaller, which helps to improve its insulation performance. The results provide a theoretical reference for the selection of oil-paper insulation bushing core material.

Key words: Oil-paper insulation bushing, semiconductor paper, aluminum foil, partial discharge, power frequency breakdown

中图分类号:

TM216

简政, 郝建, 李彦青, 林元棣. 半导体纸和铝箔作为套管芯体电容极板的局部放电特性差异及分析研究^*[J]. 电气工程学报, 2021, 16(2): 60-68.

JIAN Zheng, HAO Jian, LI Yanqing, LIN Yuandi. Study on the Partial Discharge Difference Characteristics between Semiconductor Paper and Aluminum Foil on Capacitor Structure of Oil-paper Insulation Bushing[J]. Journal of Electrical Engineering, 2021, 16(2): 60-68.

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参考文献 20

[1]	郭俊, 吴广宁, 张血琴, 等. 局部放电检测技术的现状和发展[J]. 电工技术学报, 2005(2):29-35.
	GUO Jun, WU Guangning, ZHANG Xueqin, et al. The actuality and perspective of partial discharge detection techniques[J]. Transactions of China Electrotechnical Society, 2005(2):29-35.
[2]	李军浩, 韩旭涛, 刘泽辉, 等. 电气设备局部放电检测技术述评[J]. 高电压技术, 2015, 41(8):2583-2601.
	LI Junhao, HAN Xutao, LIU Zehui, et al. Review on partial discharge measurement technology of electrical equipment[J]. High Voltage Engineering, 2015, 41(8):2583-2601.
[3]	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. Study on the surface damage characteristics of oil-immersed insulating paper caused by partial discharge[J]. Proceedings of the CSEE, 2011, 31(10):129-137.
[4]	庄金康, 兰生, 黄明亮. 电晕-热联合作用的油纸绝缘加速老化试验研究[J]. 电气工程学报, 2020, 15(4):85-90.
	ZHUANG Jinkang, LAN Sheng, HUANG Mingliang. Experimental study on accelerated aging of oil-paper insulation with combined effect of corona and heat[J]. Journal of Electrical Engineering, 2020, 15(4):85-90.
[5]	BEROUAL A, KHALED U. Influence of hydrostatic pressure on creeping discharge characteristics over solid/liquid insulation interfaces under AC and DC voltages[J]. IET Generation Transmission & Distribution, 2018, 12(2):267-271. doi: 10.1049/gtd2.v12.2
[6]	BEROUAL A, KEBBABI L. Influence of the voltage and hydrostatic pressure on morphology and final length of discharges propagating over solid-liquid interfaces[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2009, 16(6):1574-1581. doi: 10.1109/TDEI.2009.5361577
[7]	余浩, 黄彦钦, 尹钧毅, 等. 基于介电响应特性的油浸式电力变压器绝缘状态评估研究进展[J]. 电气工程学报, 2020, 15(4):1-17.
	YU Hao, HUANG Yanqin, YIN Junyi, et al. Review progress on insulation condition assessment of oil immersed power transformer based on dielectric response characteristics[J]. Journal of Electrical Engineering, 2020, 15(4):1-17.
[8]	肖天为, 张强, 黄炎光, 等. 特高频方法用于套管局部放电检测的可行性研究[J]. 电网技术, 2015, 39(6):1719-1724.
	XIAO Tianwei, ZHANG Qiang, HUANG Yanguang, et al. Experimental research on partial discharge location for bushings using UHF method[J]. Power System Technology, 2015, 39(6):1719-1724.
[9]	项敏, 袁媛, 何潇, 等. 套管中铝箔的油硫腐蚀现象及其对油纸绝缘性能的影响试验探究[J]. 高电压技术, 2019, 45(2):484-491.
	XIANG Min, YUAN Yuan, HE Xiao, et al. Investigation of oil-sulfur corrosion on aluminum foil in bushings and its effect on oil-paper insulation[J]. High Voltage Engineering, 2019, 45(2):484-491.
[10]	FOFANA I, BOUAICHA A, FARZANEH M, et al. Decay products in the liquid insulation of power transformers[J]. IET Electric Power Applications, 2010, 4(3):177-184. doi: 10.1049/iet-epa.2009.0181
[11]	ZHANG Qiang, LI Chengrong, ZHENG Shusheng, et al. Remote detecting and locating partial discharge in bushings by using wideband RF antenna array[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2016, 23(6):3575-3583. doi: 10.1109/TDEI.2016.005747
[12]	CHEN G, TANAKA Y, TAKADA T, et al. Effect of polyethylene interface on space charge formation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2004, 11(1):113-121. doi: 10.1109/TDEI.2004.1266324
[13]	POMPILI M, MAZZETTI C, BARTNIKAS R. Comparative PD pulse burst characteristics of transformer type natural and synthetic ester fluids and mineral oils[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2009, 6(16):1511-1518.
[14]	刘玲, 廖瑞金, 周湶, 等. 基于放电时差的局部放电模式识别的研究[J]. 高电压技术, 2007(8):35-39.
	LIU Ling, LIAO Ruijin, ZHOU Quan, et al. PD pattern recognition using inter-time[J]. High Voltage Engineering, 2007(8):35-39.
[15]	戴佺民, 齐波, 卓然, 等. 油浸纸套管电容芯子浸渍不良缺陷的放电过程及其特征[J]. 电工技术学报, 2017, 32(7):181-189.
	DAI Quanmin, QI Bo, ZHUO Ran, et al. Discharge process and characteristics of the poor impregnated defect of capacitor core in oil-immigrated paper bushing[J]. Transactions of China Electrotechnical Society, 2017, 32(7):181-189.
[16]	朱文兵, 辜超, 王建, 等. 变压器套管典型缺陷检测技术研究[J]. 绝缘材料, 2019, 52(8):84-89.
	ZHU Wenbing, GU Chao, WANG Jian, et al. Study on detection technology of typical defect in transformer bushing[J]. Insulating Materials, 2019, 52(8):84-89.
[17]	KIIZA R, NIASAR M, NIKJOO R, et al. Comparison of phase resolved partial discharge patterns in small test samples,bushing specimen and aged transformer bushing[C]// 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena,Montreal,QC,Canada, 2012:88-91.
[18]	CHIAMPI M, CROTTI G, HU Y, et al. Development and application of a programmable partial discharge calibrator[J]. IEEE Transactions on Instr. and Meas., 2009, 58(4):768-774. doi: 10.1109/TIM.2008.2007056
[19]	田芝华, 张满, 陈静, 等. 雾凇覆冰过程的电晕放电动态特性研究[J]. 电气工程学报, 2020, 15(2):116-124.
	TIAN Zhihua, ZHANG Man, CHEN Jing, et al. Study the dynamic characteristics of corona discharge during the rime icing process[J]. Journal of Electrical Engineering, 2020, 15(2):116-124.
[20]	王辉. 变压器油纸绝缘典型局部放电发展过程的研究[D]. 北京:华北电力大学, 2010.
	WANG Hui. The evolution process of typical partial discharges in oil-paper insulation transformers[D]. Beijing:North China Electric Power University, 2010.

针电极位置	结构体系	起始局放电压/kV	工频击穿电压/kV
接触上层绝缘纸表面	P-A-P	8	20
接触上层绝缘纸表面	P-S-P	10	22
接触铝箔或半导体纸表面	P-A-P	4	17.5
接触铝箔或半导体纸表面	P-S-P	5	18.5