Abstract：The electric arc is a critical factor affecting the performance of high voltage DC (HVDC) relay. It is necessary to study arc motion characteristics and arc extinguishing methods to improve its electric life and reliability. A three-dimensional mathematical model of arc plasma of HVDC relay was established based on magnetohydrodynamics (MHD). The simulations on the characteristics of arc motion were carried out under different external magnetic fields, different concentrations of silver vapor and additional axial insulated plates. The arc voltages under different conditions were obtained. The arc motion was characterized by the position coordinates of arc roots, and the curve of arc root motion was obtained. The arcing process was captured by high-speed camera to verify the simulation results. The results show that the silver vapor generated from the contacts hinders the arc movement and extinction. The main stage of arc erosion is that the arc moves randomly in a small range after the contact is broken under the effect of an external magnetic field. Increasing the applied magnetic field intensity is beneficial for shortening the random motion time. The addition of axial insulated plates will increase the arc voltage and accelerate the extinction of the arc.
曹启纯, 刘向军. 高压直流继电器电弧运动仿真分析与实验研究[J]. 电工技术学报, 2019, 34(22): 4699-4707.
Cao Qichun, Liu Xiangjun. Simulation Analysis and Experimental Research on Arc Motion in High Voltage DC Relay. Transactions of China Electrotechnical Society, 2019, 34(22): 4699-4707.
[1] 翟国富, 薄凯, 周学, 等. 直流大功率继电器电弧研究综述[J]. 电工技术学报, 2017, 32(22): 251-263. Zhai Guofu, Bo Kai, Zhou Xue, et al.Investigation on breaking arc in DC high-power relays: a review[J]. Transactions of China Electrotechnical Society, 2017, 32(22): 251-263. [2] 荣命哲, 吴翊, 杨飞, 等. 开关电弧电流零区非平衡态等离子体仿真研究现状[J]. 电工技术学报, 2017, 32(2): 1-12. Rong Mingzhe, Wu Yi, Yang Fei, et al.Review on the simulation method of non-equilibrium arc plasma during current zero period in the circuit breaker[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 1-12. [3] Karetta F, Lindmayer M.Simulation of the gasdynamic and electromagnetic processes in low voltage switching arcs[J]. IEEE Transactions on Components Packaging & Manufacturing Technology Part A, 1998, 21(1): 96-103. [4] Wu Yi, Rong Mingzhe, Sun Zhiqiang, et al.Numerical analysis of arc plasma behaviour during contact opening process in low-voltage switching device[J]. Journal of Physics D Applied Physics, 2007, 40(3): 795-802. [5] Li Xingwen, Chen Degui, Wang Qian, et al.Simulation of the effects of several factors on arc plasma behavior in low voltage circuit breaker[J]. Plasma Science & Technology, 2005, 7(5): 3069-3072. [6] Wu Yi, Rong Mingzhe, Li Xingwen, et al.Numerical analysis of the effect of the chamber width and outlet area on the motion of an air arc plasma[J]. IEEE Transactions on Plasma Science, 2008, 36(5): 2831-2837. [7] 周学. 航天继电器分断电弧及其抑制措施的仿真和实验研究[D]. 哈尔滨: 哈尔滨工业大学, 2011. [8] Sawa K, Tsuruoka M, Morii M.Fundamental characteristics of arc extinction by magnetic blow-out at DC voltages (<500V<inline-graphic xlink:href="-34-22-4699/img_1.wmf"/>[C]//2015 IEEE 61st Hdm Conference on Electrical Contacts, San Diego, 2015: 154-159. [9] 臧春艳. 航天继电器稳态电弧等离子体电离过程与电弧特性研究[D]. 武汉: 华中科技大学, 2006. [10] 翟国富, 周学, 杨文英. 纵向与横向磁场作用下分断直流感性负载时的电弧特性实验[J]. 电工技术学报, 2011, 26(1): 68-74. Zhai Guofu, Zhou Xue, Yang Wenying.Experiment on DC inductive arcs driven by axial and transverse magnetic fields[J]. Transactions of China Electro- technical Society, 2011, 26(1): 68-74. [11] 翟国富, 薄凯, 李庆楠, 等. 直流电弧运动过程中重击穿现象及机理研究[J]. 电工技术学报, 2016, 31(11): 105-113. Zhai Guofu, Bo Kai, Li Qingnan, et al.Research on restriking phenomena and mechanism during DC arc motion process[J]. Transactions of China Electro- technical Society, 2016, 31(11): 105-113. [12] 崔行磊, 周学, 张勇, 等. 基于彩色摄像和光谱分析联合测温方法的电弧温度场分布测量[J]. 电工技术学报, 2017, 32(15): 128-135. Cui Xinglei, Zhou Xue, Zhang Yong, et al.Measurement of static arc temperature distribution based on colorful photographing and spectroscopy analysis[J]. Transactions of China Electrotechnical Society, 2017, 32(15): 128-135. [13] Sekikawa J.Observation of breaking arcs of Ag or Cu electrical contact pairs with a high-speed camera[J]. IEICE Transactions on Electronics, 2004, 103(8): 1342-1347. [14] 林碧华, 张开淋, 刘向军. 电器电弧弧根三维运动特性测试与分析[J]. 电器与能效管理技术, 2016(24): 8-12. Lin Bihua, Zhang Kailin, Liu Xiangjun.Three- dimensional movement characteristics test and analysis for electric arc root[J]. Electrical & Energy Management Technology, 2016(24): 8-12. [15] 吴翊, 荣命哲, 杨茜, 等. 低压空气电弧动态特性仿真及分析[J]. 中国电机工程学报, 2005, 25(21): 143-148. Wu Yi, Rong Mingzhe, Yang Qian,et al.Simulation on dynamic characteristics of arc in low voltage circuit breaker modeling[J]. Proceedings of the CSEE, 2005, 25(21): 143-148. [16] 吴翊, 荣命哲, 王小华, 等. 触头打开过程中低压空气电弧等离子体的动态分析[J]. 电工技术学报, 2008, 23(5): 12-17. Wu Yi, Rong Mingzhe, Wang Xiaohua, et al.Dynamic analysis of low-voltage air arc plasma during contact opening process[J]. Transactions of China Electrotechnical Society, 2008, 23(5): 12-17. [17] Murphy A B, Tanaka M, Yamamoto K, et al.Modelling of thermal plasmas for arc welding: the role of the shielding gas properties and of metal vapour[J]. Journal of Physics D: Applied Physics, 2009, 42(19): 194006.
2019, Vol. 34 
