重燃过电压下基于Mayr-Cassie模型的电弧仿真分析
Simulation of Arc Based on Mayr-Cassie Model under Restrike Overvoltage
摘要:
过电压下开关柜内电弧仿真对于开关电器设计与改造有重要意义。本文通过EMTDC/PSCAD对变电站投切并联电容器的仿真计算，考虑了不同重燃方式的影响，得到了开关柜内过电压波形。并在MALAB/Simlink建立基于Mayr-Cassie模型的电弧模型，通过对不同过电压下的电弧模拟仿真。得到了在过电压下电弧的电压、电流曲线。计算结果表明：模型能良好的反应过电压下电弧重燃的外部特性。
Abstract: Arc simulation under overvoltage in switchgear has great significance to its design and retrofit. This article simulated the thyristor switched capacitor in transformer substation by EMTDC/PSCAD, in which, different way of restrike was considered and overvoltage waveform was obtained. The arc model based on Mayr-Cassie model is estab- lished in MATLAB/Simlink. Through the simulation of different way of overvoltage, the voltage curve, current curve of arc is obtained. The simultaneous result shows: the model could reflect the external character of arc restrike under overvoltage.
参考文献
|
[1]
|
王锟. 降低配网防雷间隙建弧率及电弧重燃率的方法研究[D]. 广西大学, 2008.
|
|
[2]
|
E. Hanninen, M. Lehtonen. Characteristics of earth faults in electrical distribution networks with high impedance earthing. Electric Power Systems Research, 1988, 44(3): 155-161.
|
|
[3]
|
U. Habedank. On the mathematical description of arc behaviour in the vicinity of current zero. etzArchiv Vot, 1988, 10(11): 339- 343.
|
|
[4]
|
王巨丰, 朱立波, 陆俊杰等. 基于改进MAYER电弧模型的间隙防雷仿真分析[J]. 广西电力, 2008, 5: 50-64.
|
|
[5]
|
J. W. McBride, K. Pechrach and P. M. Weaver. Arc motion and gas flow in current limiting circuit breakers operating with a low contact swishing velocity. IEEE Transaction on Components and Packaging Technolo-gies, 2002, 25(3): 427-433.
|
|
[6]
|
H. Mokhtari, M. Hejri. A new three phase time-domain model for electric arc furnaces using MATLAB. IEEE Conference on Transmission and Distribution, 6-10 October 2002, 3: 2078- 2083.
|
|
[7]
|
K. J. Tseng, Y. Wang. Development of a dynamic model of elec- tric arc for Power electronics simulations. IEEE Conference on Industry Applications. 6-10 October 1996, 2173-2180.
|