等离子体处理调控表面电导率提高环氧树脂绝缘性能的研究

doi:10.19595/j.cnki.1000-6753.tces.221917

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (14922 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract

The gas-insulated metal closed transmission line can be used as an effective alternative to overhead line, cable, and wall casing in the process of long-distance transmission because of its small footprint, high reliability, and adaptability to harsh climate environments. AC GIL has been in operation for many years. However, compared with AC GIL, DC GIL has poor long-term operation stability. The reason is that the epoxy insulator is under the action of a unipolar DC electric field for a long time and accumulates a large amount of surface charge on its surface, resulting in local distortion of the electric field at the gas-solid interface. The insulation performance is reduced and the reliability of the power system is affected. The surface plasma modification of epoxy resin can improve the insulation performance and flashover voltage of insulators. In this paper, based on micron alumina/epoxy resin composite insulation material, the transient field simulation model of gas-solid composite insulation was constructed. The ion transport equation was used to simulate the generation, recombination, and migration behavior of charged particles in the gas. The constitutive relationship between interface characteristics, charge dynamic behavior and insulation characteristics were studied in the electric field environment by combining the intrinsic conduction of materials and the surface conduction of the gas-solid interface.
In this paper, the research idea of experiment-simulation-experiment was adopted. Based on the previous project experience and research basis of the research group, the sample of micron alumina/epoxy resin material was prepared by referring to the basin insulator used in GIS/GIL. The electrical characteristics of the material sample were tested to obtain the key characteristic parameters required by simulation calculation. The key parameters of the experiment were input into the simulation model, and the consistency between the simulation results and the experimental results was evaluated to obtain the gas-solid composite transient field simulation model which can accurately calculate the insulation characteristics of micron alumina/epoxy resin materials. Through iteration and optimization, the insulation properties of composites with different characteristic parameter Settings were quickly calculated, and the simulation results were compared and screened to obtain the best interface characteristic parameters. Giving full play to the guiding role of the simulation model for the experiment, the sample modification scheme was developed, and the plasma surface etching method was used to construct the high-performance epoxy resin surface, to avoid a large number of redundant exploratory experiments, simplify the experimental exploration steps and accelerate the experimental cycle.
The following conclusions can be drawn from the study: (1) Increasing the surface conductivity of micron alumina/epoxy resin composites will change the dominant mechanism of surface charge accumulation. (2) The increase of surface conductivity leads to the gradual increase of surface conduction current, and the accumulation of the same polar surface charge at the three binding points increases, resulting in the distortion of the field intensity and the reduction of the maximum field intensity. (3) Appropriately increasing the surface conductivity of insulating materials can accelerate the accumulation and dissipation of charge, reduce the maximum field intensity at the three binding points, reduce the electric field distortion rate, and thus increase the flashover voltage value. However, when the surface conductivity is too large, the leakage current increases and the power loss increases. The excessive charge mobility causes the electric field distortion to rise sharply, but reduces the flashover voltage and threatens the insulation of the system. The experimental results are consistent with the simulation results, which proves the rationality of the experimental design and the effectiveness of the simulation calculation

Key words： Plasma epoxy resin gas-solid composite insulation simulation calculations ion transport

Received: 09 October 2022

PACS:

TM215.1

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Song Yanze
	Liang Guishu
	Ran Huijuan
	Luo Bing
	Xie Qing

Cite this article:

Song Yanze,Liang Guishu,Ran Huijuan等. Study on Improving Insulation Properties of Epoxy Resin by Regulating Surface Conductivity by Plasma Treatment[J]. Transactions of China Electrotechnical Society, 2023, 38(15): 3984-3998.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.221917 OR https://dgjsxb.ces-transaction.com/EN/Y2023/V38/I15/3984

[1] 唐炬, 潘成, 王邸博, 等. 高压直流绝缘材料表面电荷积聚研究进展[J]. 电工技术学报, 2017, 32(8): 10-21.
Tang Ju, Pan Cheng, Wang Dibo, et al.Development of studies about surface charge accumulation on insulating material under HVDC[J]. Transactions of China Electrotechnical Society, 2017, 32(8): 10-21.
[2] 胡绮, 李庆民, 刘智鹏, 等. 基于表层梯度电导调控的直流三支柱绝缘子界面电场优化方法[J]. 电工技术学报, 2022, 37(7): 1856-1865.
Hu Qi, Li Qingmin, Liu Zhipeng, et al.Interfacial electric field optimization of DC tri-post insulator based on gradient surface conductance regulation[J]. Transactions of China Electrotechnical Society, 2022, 37(7): 1856-1865.
[3] 王超, 李文栋, 陈泰然, 等. 550 kV GIS盆式绝缘子小型化设计(一): 几何形状优化[J]. 电工技术学报, 2022, 37(7): 1847-1855.
Wang Chao, Li Wendong, Chen Tairan, et al.Compact design of 550 kV basin-type spacer in gas insulated switchgear (part Ⅰ)—structure optimization[J]. Tran-sactions of China Electrotechnical Society, 2022, 37(7): 1847-1855.
[4] 李文栋, 王超, 陈泰然, 等. 550 kV GIS盆式绝缘子小型化设计(二): 介电分布优化[J]. 电工技术学报, 2022, 37(11): 2743-2752.
Li Wendong, Wang Chao, Chen Tairan, et al.Compact design of 550 kV basin-type spacer in gas insulated switchgear (part Ⅱ): dielectric distribution optimi-zation[J]. Transactions of China Electrotechnical Society, 2022, 37(11): 2743-2752.
[5] 李武峰, 李鹏, 李金忠, 等. SF₆气体中氧化铝掺杂环氧树脂直流沿面闪络中的虫孔效应[J]. 高电压技术, 2017, 43(8): 2754-2759.
Li Wufeng, Li Peng, Li Jinzhong, et al.Wormholes effect in DC flashover process of alumina filled epoxy resin surfaces in SF₆[J]. High Voltage Engineering, 2017, 43(8): 2754-2759.
[6] 张贵新, 李大雨, 王天宇. 交流电压下气固界面电荷积聚与放电特性研究进展[J]. 电工技术学报, 2022, 37(15): 3876-3887.
Zhang Guixin, Li Dayu, Wang Tianyu.Progress in researching charge accumulation and discharge characteristics at gas-solid interface under AC voltage[J]. Transactions of China Electrotechnical Society, 2022, 37(15): 3876-3887.
[7] 张博雅, 张贵新. 直流GIL中固-气界面电荷特性研究综述Ⅰ: 测量技术及积聚机理[J]. 电工技术学报, 2018, 33(20): 4649-4662.
Zhang Boya, Zhang Guixin.Review of charge accumulation characteristics at gas-solid interface in DC GIL, part Ⅰ: measurement and mechanisms[J]. Transactions of China Electrotechnical Society, 2018, 33(20): 4649-4662.
[8] 张兴涛, 吴广宁, 杨雁, 等. 介质阻挡放电等离子体处理对聚酰亚胺表面放电的影响[J]. 高电压技术, 2018, 44(9): 3097-3104.
Zhang Xingtao, Wu Guangning, Yang Yan, et al.Influence of dielectric barrier discharge plasma treatment on the surface discharge of polyimide film[J]. High Voltage Engineering, 2018, 44(9): 3097-3104.
[9] 杨国清, 刘阳, 戚相成, 等. 低气压介质阻挡放电条件下纳米SiO₂表面氟化研究[J]. 高电压技术, 2021, 47(9): 3144-3152.
Yang Guoqing, Liu Yang, Qi Xiangcheng, et al.Research on surface fluorination of nanosilica by dielectric barrier discharge under low pressure[J]. High Voltage Engineering, 2021, 47(9): 3144-3152.
[10] 关弘路. 基于介质阻挡放电等离子体处理的绝缘材料表面电荷动力学特性与直流闪络抑制[D]. 杭州: 浙江大学, 2020.
[11] 张贵新, 张博雅, 王强, 等. 高压直流GIL中盆式绝缘子表面电荷积聚与消散的实验研究[J]. 高电压技术, 2015, 41(5): 1430-1436.
Zhang Guixin, Zhang Boya, Wang Qiang, et al.Experiment study of surface charge accumulation and decay on a cone-type insulator in HVDC GIL[J]. High Voltage Engineering, 2015, 41(5): 1430-1436.
[12] 汪沨, 方志, 邱毓昌. 高压直流GIS中绝缘子的表面电荷积聚的研究[J]. 中国电机工程学报, 2005, 25(3): 105-109.
Wang Feng, Fang Zhi, Qiu Yuchang.Study of charge accumulation on insulator surface in hvdc gas-insulated switchgear[J]. Proceedings of the CSEE, 2005, 25(3): 105-109.
[13] 王邸博, 唐炬, 刘凯. 直流高压下GIS支柱绝缘子表面电荷积聚特性[J]. 高电压技术, 2015, 41(9): 3073-3081.
Wang Dibo, Tang Ju, Liu Kai.Charge accumulation on post insulator surface under HVDC in GIS[J]. High Voltage Engineering, 2015, 41(9): 3073-3081.
[14] 王健, 李伯涛, 李庆民, 等. 直流GIL中线形金属微粒对柱式绝缘子表面电荷积聚的影响[J]. 电工技术学报, 2016, 31(15): 213-222.
Wang Jian, Li Botao, Li Qingmin, et al.Impact of linear metal particle on surface charge accumulation of post insulator within DC GIL[J]. Transactions of China Electrotechnical Society, 2016, 31(15): 213-222.
[15] 刘熊, 林海丹, 梁义明, 等. 空气中微秒脉冲沿面放电对环氧树脂表面特性影响研究[J]. 电工技术学报, 2015, 30(13): 158-165.
Liu Xiong, Lin Haidan, Liang Yiming, et al.Effect of atmospheric-pressure microsecond pulsed discharges on epoxy resin surface[J]. Transactions of China Electrotechnical Society, 2015, 30(13): 158-165.
[16] Xue Jianyi, Li Yuan, Dong Junhao, et al.Surface charge transport behavior and flashover mechanism on alumina/epoxy spacers coated by SiC/epoxy composites with varied SiC particle size[J]. Journal of Physics D: Applied Physics, 2020, 53(15): 155503.
[17] Ma Guoming, Zhou Hongyang, Liu Shupin, et al.Measurement and simulation of charge accumulation on a disc spacer with electro-thermal stress in SF₆ gas[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(4): 1221-1229.
[18] Winter A, Kindersberger J.Stationary resistive field distribution along epoxy resin insulators in air under DC voltage[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2012, 19(5): 1732-1739.
[19] 张一, 卢理成, 杨霄, 等. SF₆气体绝缘高压直流设备内部绝缘子用新型陶瓷材料特性探索[J]. 中国电机工程学报, 2021, 41(1): 174-182.
Zhang Yi, Lu Licheng, Yang Xiao, et al.Exploration on the characteristics of new ceramic materials for insulators used in SF₆ gas insulated HVDC equipment[J]. Proceedings of the CSEE, 2021, 41(1): 174-182.
[20] Volpov E.Electric field modeling and field formation mechanism in HVDC SF₆ gas insulated systems[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2003, 10(2): 204-215.
[21] Mesyats G A, Uimanov I V.Field emission from metals in strong electric fields[C]//2006 International Symposium on Discharges and Electrical Insulation in Vacuum, Matsue, Japan, 2007: 29-32.
[22] Shao Tao, Wang Ruixue, Zhang Cheng, et al.Atmospheric-pressure pulsed discharges and plasmas: mechanism, characteristics and applications[J]. High Voltage, 2018, 3(1): 14-20.
[23] 梅丹华, 方志, 邵涛. 大气压低温等离子体特性与应用研究现状[J]. 中国电机工程学报, 2020, 40(4): 1339-1358.
Mei Danhua, Fang Zhi, Shao Tao.Recent progress on characteristics and applications of atmospheric pressure low temperature plasmas[J]. Proceedings of the CSEE, 2020, 40(4): 1339-1358.
[24] Ran Huijuan, Song Yanze, Yan Jiyuan, et al.Improving the surface insulation of epoxy resin by plasma etching[J]. Plasma Science and Technology, 2021, 23(9): 095502.
[25] 詹振宇, 阮浩鸥, 律方成, 等. 等离子体氟化改性环氧树脂及其在C₄F₇N/CO₂混合气体中电气性能研究[J]. 电工技术学报, 2020, 35(8): 1787-1798.
Zhan Zhenyu, Ruan Haoou, Lü Fangcheng, et al.Plasma fluorinated epoxy resin and its insulation properties in C₄F₇N/CO₂ mixed gas[J]. Transactions of China Electrotechnical Society, 2020, 35(8): 1787-1798.
[26] 高宇, 王小芳, 李楠, 等. 聚合物绝缘材料载流子陷阱的表征方法及陷阱对绝缘击穿影响的研究进展[J]. 高电压技术, 2019, 45(7): 2219-2230.
Gao Yu, Wang Xiaofang, Li Nan, et al.Characterization method for carrier trap and the effect on insulation breakdown within polymer insulating materials: a review[J]. High Voltage Engineering, 2019, 45(7): 2219-2230.
[27] Simmons J G, Tam M C.Theory of isothermal currents and the direct determination of trap parameters in semiconductors and insulators containing arbitrary trap distributions[J]. Physical Review B, 1973, 7(8): 3706-3713.
[28] 林浩凡. 低温等离子体薄膜沉积对环氧树脂表面电特性影响的研究[D]. 北京: 华北电力大学, 2018.
[29] 李大雨, 张贵新, 王天宇. 交流电压下绝缘子表面电荷对闪络电压影响的主导因素[J]. 高电压技术, 2021, 47(12): 4199-4206.
Li Dayu, Zhang Guixin, Wang Tianyu.Dominant factors affecting flashover by the presence of surface charge under AC voltage[J]. High Voltage Engineering, 2021, 47(12): 4199-4206.
[30] 邵涛, 严萍. 大气压气体放电及其等离子体应用[M]. 北京: 科学出版社, 2015.