多物理场耦合对金属化膜自愈行为的影响机制

doi:10.19595/j.cnki.1000-6753.tces.250213

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (8308 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The converter valve is the core component of China’s flexible direct current transmission and new energy power generation systems, and the dry-type capacitor is referred to as the “heart” of the converter valve. Its performance directly affects the stability and safety of AC-DC conversion. Currently, the capacitors widely used in China mainly include oil-immersed foil-type capacitors and dry-type metallized film capacitors, metallized polypropylene film (MPPF). Compared with oil-immersed foil-type capacitors, metallized film capacitors have unique “self-healing properties”, small volume, and no risk of oil leakage, and have been widely applied in the new energy industry. Currently, biaxially oriented polypropylene film (BOPP) is mainly used as the base material for metallized films in industry. However, the mechanism in self-healing dynamic process is still not clear, especially under multiple physical fields which leads to a slow improvement in industrial manufacturing.
This paper independently built a multi-physics field coupling test platform for the self-healing property of metallized films, systematically studying the self-healing property and its influencing mechanism under the combined action of electric, thermal, and mechanical fields. The research shows that during the self-healing process, the arc will burn the surface of the polypropylene dielectric layer, forming a large amount of carbon element accumulation in the self-healing evaporation zone. The relationship between temperature and self-healing property shows a “bell-shaped” curve, the knee point is 65℃. below 65℃, the temperature will intensify the damage effect of the self-healing property on the film, but as the temperature continues to rise, the damage caused by self-healing to the film will decrease. At the same time, the high temperature significantly reduces the adhesion between the metal electrode layer and the polypropylene dielectric layer, and the pressure effect will destroy the aggregated structure of the polypropylene dielectric layer, resulting in a decrease in crystallinity.
Moreover, this paper constructed a multi-physics field coupled plasma simulation model for the self-healing behavior, theoretically studying the influence mechanism of electric, thermal, and mechanical fields on the dynamic behavior of self-healing. The model calculation results show that when the environmental temperature is below 65℃, the promoting effect of temperature on the self-healing process dominates, causing the self-healing area and self-healing quantity to increase with the increase in temperature. However, when the temperature exceeds 65℃, the promoting effect of temperature on plasma slows down, and at the same time, due to the different thermal expansion coefficients of the metal electrode layer and the polypropylene dielectric layer, the interface bonding condition becomes the main influencing factor. As the adhesion of the metal electrode layer decreases, the plasma energy is difficult to diffuse radially, resulting in a reduction in the single-point self-healing area. Furthermore, the further coupling of pressure will reduce the migration rate of the plasma, causing its movement speed to slow down, and the greater the pressure, the slower the plasma moves, thereby further reducing the single-point self-healing area. The research results of this paper can provide theoretical support for optimizing the manufacturing process of polypropylene metallized films and offer important references for improving the performance and reliability of dry-type film capacitors in high-field environments.

Key words： Multi-physics self-healing property metallized film plasma

Received: 12 February 2025

PACS:

TM614

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Wu Zhiyuan
	Wen Ruiqiang
	Tu Youping
	Dang Zhimin
	Wang Wei

Cite this article:

Wu Zhiyuan,Wen Ruiqiang,Tu Youping等. The Mechanism of Multi-Physics Coupling Effects on the Self-Healing Behavior of Metallized Films[J]. Transactions of China Electrotechnical Society, 2026, 41(3): 807-820.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.250213 OR https://dgjsxb.ces-transaction.com/EN/Y2026/V41/I3/807

[1] Brown R W.Linking corrosion and catastrophic failure in low-power metallized polypropylene capacitors[J]. IEEE Transactions on Device and Materials Reliabi-lity, 2006, 6(2): 326-333.
[2] Ma Yusheng, Shen Haitao, Pei Chunming, et al.Detection of self-healing discharge in metallized film capacitors using an ultrasonic method[J]. Electronics, 2020, 9(11): 1893.
[3] Charlton C B, Shen T E.Plastic-film-dielectric capaci-tors[J]. Proceedings of the IEE-Part B: Electronic and Communication Engineering, 1962, 109(22S): 476-487.
[4] Yang Ying, Huang He, Wang Fang, et al.Study on microstructure and its correlation with sheet resis-tance of Zn-Al metallized film[J]. Surface Engineering, 2021, 37(8): 1051-1058.
[5] Wu Zhiyuan, Huang Lei, Zhong Shaolong, et al.Nano-scale electron transfer mechanism in metallized polypro-pylene films[J]. Nanoscale, 2025, 17(16): 10334-10343.
[6] Wang Tianyu, Liu Cheng, Li Dayu, et al.Nano ZnO/epoxy coating to promote surface charge dissipation on insulators in DC gas-insulated systems[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2020, 27(4): 1322-1329.
[7] Wang Tianyu, Li Xiaofen, Zhang Boya, et al.Basic reason for the accumulation of charge on the surface of polymer dielectrics[J]. Science China Materials, 2022, 65(10): 2884-2888.
[8] 章妙. 金属化膜电容器自愈特性研究[D]. 武汉: 华中科技大学, 2012.
Zhang Miao.Study on the characteristics of self-healing in metallized film capacitor[D]. Wuhan: Huazhong University of Science and Technology, 2012.
[9] Zeng Fuping, Wu Siying, Yang Xu, et al.Fault diagnosis and condition division criterion of DC gas insulating equipment based on SF₆ partial discharge decomposition characteristics[J]. IEEE Access, 2019, 7: 29869-29881.
[10] Sclavons M, Carlier V, De Roover B, et al.The anhydride content of some commercial PP-g-MA: FTIR and titration[J]. Journal of Applied Polymer Science, 1996, 62(8): 1205-1210.
[11] Kammermaier J, Rittmayer G, Birkle S.Modeling of plasma-induced self-healing in organic dielectrics[J]. Journal of Applied Physics, 1989, 66(4): 1594-1609.
[12] Belko V O, Emelyanov O A, Ivanov I O, et al.Self-healing processes of metallized film capacitors in overload modes: part 1: experimental observations[J]. IEEE Transactions on Plasma Science, 2021, 49(5): 1580-1587.
[13] Tortai J H, Bonifaci N, Denat A, et al.Diagnostic of the self-healing of metallized polypropylene film by modeling of the broadening emission lines of aluminum emitted by plasma discharge[J]. Journal of Applied Physics, 2005, 97(5): 053304.
[14] Li Hua, Chen Yaohong, Lin Fuchang, et al.The capacitance loss mechanism of metallized film capacitor under pulsed discharge condition[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2011, 18(6): 2089-2094.
[15] 李化, 章妙, 林福昌, 等. 金属化膜电容器自愈理论及规律研究[J]. 电工技术学报, 2012, 27(9): 218-223, 230.
Li Hua, Zhang Miao, Lin Fuchang, et al.Study on theory and influence factors of self-healing in metallized film capacitors[J]. Transactions of China Electrotechnical Society, 2012, 27(9): 218-223, 230.
[16] 李志元, 王镜然, 徐哲, 等. 直流电压作用下金属化膜电容器的自愈特性及寿命预测[J]. 高电压技术, 2023, 49(7): 2929-2937.
Li Zhiyuan, Wang Jingran, Xu Zhe, et al.Self-healing characteristics and life prediction of metallized film capacitor under DC voltage[J]. High Voltage Enginee-ring, 2023, 49(7): 2929-2937.
[17] He Yushuang, Wang Feipeng, Du Guoqiang, et al.From independent to related: voltage ramp rate effects on self-healing scaling in metallized polypropylene film capacitors[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2023, 30(5): 2189-2198.
[18] 国家市场监督管理总局, 国家标准化管理委员会. 标称电压1 000 V以上交流电力系统用并联电容器第1部分:总则: GB/T 11024.1—2019[S]. 北京: 中国标准出版社, 2019.
[19] 尹婷, 王子建, 侯智剑, 等. 环境温度及施加电压对自愈式电力电容器温升和温度场分布的影响[J]. 科学技术与工程, 2016, 16(1): 193-199, 203.
Yin Ting, Wang Zijian, Hou Zhijian, et al.Influence of ambient temperature and applied voltage on the temperature rise and temperature distribution of self-healing power capacitor[J]. Science Technology and Engineering, 2016, 16(1): 193-199, 203.
[20] 李化, 陈麒任, 李浩原, 等. 交流高压金属化膜电容器温升特性和优化设计[J]. 高压电器, 2018, 54(1): 1-8.
Li Hua, Chen Qiren, Li Haoyuan, et al.Temperature rise characteristic and design optimization of AC high voltage metallized film capacitor[J]. High Voltage Apparatus, 2018, 54(1): 1-8.
[21] 马乃兵. 干式高压并联电容器的技术特点分析[J]. 电力电容器, 2002, 23(2): 7-10.
Ma Naibing.Analysis of the technical characteristics for the dry-type high-voltage shunt capacitor[J]. Power Capacitors, 2002, 23(2): 7-10.
[22] Valentine N, Azarian M H, Pecht M.Metallized film capacitors used for EMI filtering: a reliability review[J]. Microelectronics Reliability, 2019, 92: 123-135.
[23] 邓涛. 自愈式低压电容器金属化薄膜的应用研究[J]. 电工技术, 2024(17): 168-170, 174.
Deng Tao.Applicative study of metallized thin film of self-healing low-voltage parallel capacitors[J]. Electric Engineering, 2024(17): 168-170, 174.
[24] 董新华, 王伟, 袁浩, 等. 基于乙烯共聚的高压抗冲共聚聚丙烯电缆绝缘材料机械和电气性能的协同优化[J]. 电工技术学报, 2025, 40(23): 7763-7775.
Dong Xinhua, Wang Wei, Yuan Hao, et al.Syner-gistic optimization of the mechanical and electrical properties of high voltage impact polypropylene copolymer cable insulation materials based on ethylene copolymerization[J]. Transactions of China Electro-technical Society, 2025, 40(23): 7763-7775.
[25] Da Silva A L N, Tavares M I B, Politano D P, et al. Polymer blends based on polyolefin elastomer and polypropylene[J]. Journal of Applied Polymer Science, 1997, 66(10): 2005-2014.
[26] Huang Xiaoyan, Han Lu, Yang Xiao, et al.Smart dielectric materials for next-generation electrical insulation[J]. iEnergy, 2022, 1(1): 19-49.
[27] 张雯嘉, 王伟, 袁浩, 等. 接枝聚丙烯电缆绝缘材料的电树枝特性及机理[J]. 电工技术学报, 2024, 39(1): 88-98.
Zhang Wenjia, Wang Wei, Yuan Hao, et al.Electrical tree characteristics and mechanism of grafted poly-propylene cable insulation[J]. Transactions of China Electrotechnical Society, 2024, 39(1): 88-98.
[28] 樊林禛, 李琦, 袁浩, 等. 接枝对聚丙烯绝缘材料热氧老化的影响及机理[J]. 中国电机工程学报, 2022, 42(11): 4227-4238.
Fan Linzhen, Li Qi, Yuan Hao, et al.Influence and mechanism of grafting on thermal oxidative aging of polypropylene[J]. Proceedings of the CSEE, 2022, 42(11): 4227-4238.
[29] 宋柯, 王伟, 钱定冬, 等. 杂质浓度梯度下XLPE空间电荷与电场分布特性仿真研究[J]. 绝缘材料, 2023, 56(4): 40-47.
Song Ke, Wang Wei, Qian Dingdong, et al.Simulation research on space charge and electric field distribution characteristics of XLPE under impurity concentration gradient[J]. Insulating Materials, 2023, 56(4): 40-47.
[30] Walgenwitz B, Tortai J H, Bonifaci N, et al.Self-healing of metallized polymer films of different nature[C]//Proceedings of the 2004 IEEE Interna-tional Conference on Solid Dielectrics, Toulouse, France, 2004: 29-32.
[31] Dietz R L, Yaskoff J P, Schiroky G H, et al.Interfacial thermal resistance and temperature depen-dence of three adhesives for electronic packaging[J]. IEEE Transactions on Components and Packaging Technologies, 2000, 23(4): 633-637.
[32] Razavi M, Muzychka Y S, Kocabiyik S.Thermal spreading resistance in flux channel with arbitrary heat convection in the sink plane[C]//Volume 8B: Heat Transfer and Thermal Engineering, Montreal, Quebec, Canada, 2014: V08BT10A084.
[33] Clement B W, Frederking T H K. Thermal boundary resistance and related peak flux during supercritical heat transport from a horizontal surface through a short tube to a saturated bath of liquid He II[J]. Pure and Applied Cryogenics, 1966, 6: 49-59.
[34] Lu Yongfeng, Tao Zibo, Hong Minhui.Charac-teristics of excimer laser induced plasma from an aluminum target by spectroscopic study[J]. Japanese Journal of Applied Physics, 1999, 38(5R): 2958.
[35] Ye J L, Cao Q, Zhao Y S.Co-pyrolysis of poly-propylene and biomass[J]. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2008, 30(18): 1689-1697.
[36] 陈东洋, 刘晓旭, 孙家明, 等. 金属有机框架包覆铁电二维纳米片增强聚醚酰亚胺复合介质高温储能性能研究[J]. 电工技术学报, 2025, 40(5): 1662-1671.
Chen Dongyang, Liu Xiaoxu, Sun Jiaming, et al.High temperature energy storage performance enhanced by metal-organic framework coated ferroelectric two-dimensional nanosheets filled with polyetherimide composite dielectric[J]. Transactions of China Electro-technical Society, 2025, 40(5): 1662-1671.
[37] 刘云鹏, 李浩义, 李乐, 等. 用于光伏板静电除尘的单壁碳纳米管透明导电薄膜老化性能研究[J]. 电工技术学报, 2025, 40(3): 864-877.
Liu Yunpeng, Li Haoyi, Li Le, et al.Research on the aging properties of single-walled carbon nanotubes transparent conductive thin films suitable for electros-tatic dust removal of photovoltaic panels[J]. Transactions of China Electrotechnical Society, 2025, 40(3): 864-877.