In view of the disadvantage that it's difficult to establish an accurate arc model when solving breaking current of molded case circuit breaker(MCCB) by simulation and it’s costly and prolonged by experiment with all-physical prototyping, a hybrid current model of breaking cycle was proposed, which consists of experiment current and response surface current. “Pseudo-current” was got by experimenting with the physical prototype of the contact and quench-arc subsystem, other components were taken as digital prototyping, the status variables corresponding to the breaking cycle were extracted by the technique of transient analysis, electromagnetic field and multi-body dynamics analysis and BP neural network based on the “pseudo-current”, and a response surface current model about the status variables was established. A simulation platform based on the current model was established at last, and applied into the breaking simulation of MCCB, the result shows that it solves the breaking current effectively and reduces the simulation cycle significantly.
[1] 李兴文,陈德桂.空气开关电弧的磁流体动力学建模及特性仿真[J].中国电机工程学报,2007,27(21):31-37.
LI Xingwen, CHEN Degui. Magnetohydrodynamics modeling and characteristics simulation of air switching Arc [J].Proceedings of the Chinese Society for Electrical Engineering, 2007,27(21): 31-37.
[2] WU Y, RONG M Z,YANG F, et al. Numerical modeling of arc root transfer during contact opening in a lowvoltage air circuit breaker [J]. IEEE,2008,36(4): 1074-1075.
[3] SWIERCZYNSKI B, GONZALEA J J,TEULET P. Advance in low voltage circuit breaker modeling [J]. Journal of Physics. D: Applied Physics, 2004, 37(4): 595-609.
[4] LINDMAYER M, MARZAHN E,MUTZKE A. The process of arcsplitting between metal plates in low voltage arc chutes[C] ∥ Proceedings of the 50th IEEE Holm Conference on Electrical Contacts. Seattle: \ [s. n.\], 2004: 28-34.
[5] 马强,荣命哲, MURPHY A B,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 A B,et al. Simulation and experiment on airarc characteristics in lowvoltage circuit breaker considering wall ablation [J]. Transactions of China Electrotechnical Society, 2009,24(12): 74-81.
[6] 杨茜,荣命哲,吴翊.低压断路器中空气电弧运动的仿真及实验研究[J].中国电机工程学报,2006,26(15): 89-93.
YANG Qian, RONG Mingzhe, WU Yi. Simulation and experimental research on air arc motion in lowvoltage circuit breaker [J]. Proceedings of the Chinese Society for Electrical Engineering, 2006,26(15): 89-93.
[7] RACHARD H, CHEVRIER P, HENRY D. Numerical study of coupled electromagnetic and aerothermodynamics phenomena in a circuit breaker electric arc [J].International Journal of Heat and Mass Transfer, 1999,142(10): 1723-1734.
[8] SCHLITZ L Z,GARIMELLA S V,CHAN S H.Gas dynamics and electromagnetic processes in highcurrent arc plasma [J]. Journal of Applied Physics, 1999,85(5): 2847-2555.
[9] 王涛.基于一次暂态信号的断路器开断燃弧时间检测技术[D].山东:山东大学,2004: 20-27.
WANG Tao. Method of arcing time detect of circuit breaker based on the first transient signal [D].Shandong: Shandong University, 2004: 20-27.
[10] 向洪岗,陈德桂,李兴文,等.应用有限元方法分析塑壳断路器磁脱扣器的动作特性[J].西安交通大学学报,2005,39(8): 890-894.
XIANG Honggang, CHEN Degui, LI Xingwen,et al. Action characteristics analysis of magnetic release for molded case circuit breaker with 3D finite element method [J]. Journal of XI’AN Jiaotong University, 2005,39(8): 890-894.
[11] 赵振,张树有.自适应步长顺序耦合法及在瞬态场耦合问题分析中的应用[J].计算机集成制造系统,2011,17(7): 1404-1414.
ZHAO Zhen,ZHANG Shuyou. Method of step selfadaptive sequentialinteraction and application in problem of transient fields coupling [J]. Computer Integrated Manufacturing System, 2011,17(7): 1404-1414.
[12] 杨行峻,郑君里.人工神经网络[M].北京,高等教育出版社,1992: 54-62.
[13] 兵器工业无损检测人员技术资格鉴定考核委员会.常用钢材磁特性曲线速查手册[M].北京,机械工业出版社,2003: 25-27.