产气材料特性对直流塑壳断路器电弧行为的影响

doi:10.19595/j.cnki.1000-6753.tces.251538

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Abstract In DC molded-case circuit breakers (MCCBs), gas-generating materials are added in the limited volume of the arc chamber to improve interruption performance. When the high-temperature arc erodes these materials, they decompose rapidly, releasing large amounts of gas that increase chamber pressure, stretch the arc column, and accelerate current interruption. However, decomposition products change the plasma composition, reducing the ionization degree and thermal conductivity of the quenching gas, which affects the arc temperature distribution. In turn, the arc temperature evolution influences the chemical decomposition and gas release rate of the material, creating a strong real time coupling. Existing arc gas producing material coupled simulations often assume the material is fully gasified and uniformly distributed or ignore its dynamic gas release under time-varying arc temperature, which differs from actual physical behavior.
To investigate the influence of the material properties on arc energy and shorten the arcing time in a confined arc chamber, an experimental platform was built to analyze arc motion, splitter plates utilization, and arcing duration under the action of the gas-producing material. Experiments show that adding the material decreases arc extinguishing time but also causes arc root stagnation and vortex formation inside the chamber. To improve the interruption performance, a bidirectionally coupled model combining arc magnetohydrodynamics and mass transfer of the gas producing material was established. The convection diffusion equation is used to describe the transport process of the material, and the Arrhenius equation is employed to simulate its thermal decomposition reaction. Unlike traditional models that treat the gas producing material as a preset diffusing substance, the chemical decomposition reflects the actual generation of gases from thermal degradation or reaction, thus improving physical accuracy. By introducing the reaction-rate term r as a concentration source, the model avoids empirical errors caused by artificially assigning an initial gas concentration. In addition, because the chemical decomposition of the material is strongly correlated in time and space with arc motion, the reaction diffusion model is coupled in real time with the arc magneto-hyolro-dynamics (MHD) model to simulate the changes in the arc chamber field caused by high temperature erosion of the material under real operating conditions. The simulations compute the temperature field, flow field, and the dynamic concentration distribution and partial pressure of decomposition products inside the arc chamber.
The results show that thermal decomposition significantly accelerates arc heat transfer, but improper volume or placement leads to local gas accumulation. At arc runner corners, this gas interacts with the transverse flow to form vortices, which hinder arc migration, cause arc root stagnation, prolong the residence time of high temperature regions, and reduce splitter plastes utilization, making it difficult to extinguish the arc quickly. Reducing the material volume weakens vortex intensity and arc root stagnation, improving arc interruption performance. Three typical regions were analyzed: the arc runner turning corner the cathode runner, and the anode runner corner. When the material is placed at the anode-runner corner, the released gases drive the arc root upward more effectively toward the splitter plate, reducing stagnation and vortex formation, and increasing the number of utilized splitter plates to eight.
To verify the accuracy of the simulation model, experiments were conducted on an improved structural platform. The observed arc behavior agrees well with the simulation results. The findings can support the optimization and miniaturization of arc chamber design in MCCBs.

Key words： DC molded case circuit breaker gas producing material magneto-hydro-dynamics thermal decomposition arc root stagnation

Received: 04 September 2025

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TM561.5

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	Li Jing
	Zhu Ziyuan
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Li Jing,Zhu Ziyuan,Duan Wei等. The Influence of Gas-Producing Material Properties on the Breaking Performance of DC Molded Case Circuit Breaker[J]. Transactions of China Electrotechnical Society, 2026, 41(17): 6039-6052.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.251538 OR https://dgjsxb.ces-transaction.com/EN/Y2026/V41/I17/6039

[1] 陈胜, 陈明健, 卫志农, 等. 电-气-氢混联综合能源配网灵活运行域模型[J]. 电工技术学报, 2025, 40(19): 6101-6114, 6130.
Chen Sheng, Chen Mingjian, Wei Zhinong, et al.Flexible operation region for integrated electric-gas-hydrogen distribution network[J]. Transactions of China Electrotechnical Society, 2025, 40(19): 6101-6114, 6130.
[2] 刘斌, 刘汉青, 张延平, 等. 过流故障下开关柜电热特性仿真分析研究[J]. 电气工程学报, 2025, 20(3): 323-332.
Liu Bin, Liu Hanqing, Zhang Yanping, et al.Simulation and analysis of electrical and thermal characteristics of switchgear under overcurrent faults[J]. Journal of Electrical Engineering, 2025, 20(3): 323-332.
[3] 张裕, 李庆生, 罗宁. 面向低碳经济目标的输配电系统协同电网扩展规划[J]. 高压电器, 2025, 61(5): 247-257.
Zhang Yu, Li Qingsheng, Luo Ning.Collaborative power grid expansion planning of transmission and distribution system towards low-carbon economic target[J]. High Voltage Apparatus, 2025, 61(5): 247-257.
[4] 王流火, 孙强, 祁含, 等. 高气压洁净空气雷电冲击与直流作用下的击穿场强研究[J]. 绝缘材料, 2026, 59(3): 77-87.
Wang Liuhuo, Sun Qiang, Qi Han, et al.Study on breakdown field strength of high-pressure clean air under lightning impulse and DC voltage[J]. Insulating Materials, 2026, 59(3): 77-87.
[5] 熊德智, 陈石东, 郎霄剑, 等. 低压混合式直流断路器开断特性研究[J]. 高压电器, 2025, 61(6): 43-51.
Xiong Dezhi, Chen Shidong, Lang Xiaojian, et al.Research on interruption characteristics of low voltage hybrid DC circuit breaker[J]. High Voltage Apparatus, 2025, 61(6): 43-51.
[6] 李静, 刘凯, 曹云东, 等. 直流接触器分断过程中弧根演变及对重燃的影响分析[J]. 中国电机工程学报, 2019, 39(4): 1241-1250.
Li Jing, Liu Kai, Cao Yundong, et al.Arc root development and its influence on arc reigniting during the breaking process of the DC contactor[J]. Proceedings of the CSEE, 2019, 39(4): 1241-1250.
[7] Chen Degui, Li Zhipeng, Li Xingwen, et al.Simulation of pressure rise in arc chamber of MCCB during its interruption process[C]// Electrical Contacts —2007 Proceedings of the 53rd IEEE Holm Confere-nce on Electrical Contacts, Pittsburgh, PA, USA, 2007: 43-47.
[8] André P.The influence of graphite on the composition and thermodynamic properties of plasma formed in ablated vapour of PMMA, PA6-6, PETP, POM and PE used in circuit-breakers[J]. Journal of Physics D: Applied Physics, 1997, 30(3): 475.
[9] Biricik G D, Celebi H, Seyhan A T, et al.Thermal and mechanical properties of flax char/carbon fiber reinforced polyamide 66 hybrid composites[J]. Poly-mer Composites, 2022, 43(1): 503-516.
[10] Zhang Yucheng, Li Wendong, Wang Chao, et al.Eco-friendly thermoplastic alternatives to epoxy resin for support insulators[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2023, 30(2): 518-527.
[11] Yin Jianning, Wang Qian, Li Xingwen, et al.Experimental evaluation of outgassing characteristics of polymers on air arc behavior[C]//2020 IEEE 66th Holm Conference on Electrical Contacts and Intensive Course (HLM), San Antonio, TX, USA, 2021: 15-19.
[12] Liao Zijie, Wang Qian, Li Xingwen.Effect of gassing material on partial discharge characteristics in MCCB[C]//2022 IEEE 67th Holm Conference on Electrical Contacts (HLM), Tampa, FL, USA, 2022: 1-7.
[13] 汪倩, 赵婉萌, 曹伟东, 等. 基于ReaxFF的产气材料热解及动力学分析[J]. 电工技术学报, 2025, 40(10): 3082-3096.
Wang Qian, Zhao Wanmeng, Cao Weidong, et al.Analyzing the pyrolysis kinetics and pyrolysis gases of gassing materials using ReaxFF[J]. Transactions of China Electrotechnical Society, 2025, 40(10): 3082-3096.
[14] 马强, 荣命哲, Anthony B Murphy, 等. 考虑器壁侵蚀影响的低压断路器电弧运动特性仿真及实验[J]. 电工技术学报, 2009, 24(12): 74-81.
Ma Qiang, Rong Mingzhe, Murphy Anthony B, et al.Simulation and experiment on airarc characteristics in low-voltage circuit breaker considering wall ablation[J]. Transactions of China Electrotechnical Society, 2009, 24(12): 74-81.
[15] 段薇, 李静, 张兴菲, 等. 器壁材料对直流塑壳断路器电弧开断行为的影响[J]. 电工技术学报, 2025, 40(16): 5343-5354.
Duan Wei, Li Jing, Zhang Xingfei, et al.The influence of wall materials on the arc interruption behavior of DC molded case circuit breakers[J]. Transactions of China Electrotechnical Society, 2025, 40(16): 5343-5354.
[16] Huo Jindong, Selezneva S, Jacobs L, et al.Study of wall ablation on low-voltage arc interruption: The effect of Stefan flow[J]. Journal of Applied Physics, 2019, 125(21): 213302.
[17] GB/Z 22074—2016塑料外壳式断路器可靠性试验方法[S].
[18] Bo Kai, Zhou Xue, Zhai Guofu.Simulation of arc dwelling behavior during bridge-type contacts opening process for high-power relay[J]. IEEE Transactions on Components, Packaging and Manufacturing Technology, 2018, 8(6): 975-981.
[19] Yang Fei, Wu Yi, Rong Mingzhe, et al.Low-voltage circuit breaker arcs: simulation and measurements[J]. Journal of Physics D: Applied Physics, 2013, 46(27): 273001.
[20] Swierczynski B, Gonzalez J J, Teulet P, et al.Advances in low-voltage circuit breaker modelling[J]. Journal of Physics D: Applied Physics, 2004, 37(4): 595.
[21] Liu Xiangjun, Huang Xin, Cao Qichun.Simulation and experimental analysis of DC arc characteristics in different gas conditions[J]. IEEE Transactions on Plasma Science, 2021, 49(3): 1062-1071.
[22] 董翔, 韩晓昆, 衣书伟, 等. 电晕和火花放电条件下洁净空气的分解特性研究[J]. 绝缘材料, 2025, 58(2): 55-65.
Dong Xiang, Han Xiaokun, Yi Shuwei, et al.Study on decomposition characteristics of clean air under corona and spark discharge conditions[J]. Insulating Materials, 2025, 58(2): 55-65.
[23] 李静, 易晨曦, 彭世东, 等. 高海拔环境下大容量直流空气断路器灭弧性能研究[J]. 电工技术学报, 2024, 39(3): 863-874.
Li Jing, Yi Chenxi, Peng Shidong, et al.Study on interrupting characteristics of large capacity DC air circuit breaker at high altitude[J]. Transactions of China Electrotechnical Society, 2024, 39(3): 863-874.
[24] Bo Kai, Zhou Xue, Zhai Guofu.Investigation on arc dwell and restriking characteristics in DC high-power relay[J]. IEEE Transactions on Plasma Science, 2017, 45(6): 1032-1042.
[25] Gleizes A, Cressault Y, Teulet P.Mixing rules for thermal plasma properties in mixtures of argon, air and metallic vapours[J]. Plasma Sources Science and Technology, 2010, 19(5): 055013.
[26] 彭世东, 李静, 曹云东, 等. 耦合磁场直流空气断路器栅片特性对灭弧性能的影响研究[J]. 电工技术学报, 2022, 37(21): 5587-5597.
Peng Shidong, Li Jing, Cao Yundong, et al.Research on the effect of splitter plate material and structure on arc extinguishing performance with coupling magnetic field[J]. Transactions of China Electrotechnical Society, 2022, 37(21): 5587-5597.