Experimental Investigation on Breaking Characteristic of Load Switch in Medium High Voltage Ring Network Cabinet

Author:

Shi Qiang1,Li Wei Wei2,Ai Bing1

Affiliation:

1. Sichuan Electric Power Corporation Measurement Center

2. Sichuan Electric Power Test & Research Institute

Abstract

This paper focuses on an experimental investigation of the arc plasma behavior in current breaking process of a certain type of 12kV ring network cabinet’s SF6 load switch. From the frames obtained by high-speed photography, the characteristic of the arc movement was revealed. According to analysis, the structure of load switch was optimized and its breaking capacity about transfer current was improved. This study may provide a reference for design and optimization of load switches.

Publisher

Trans Tech Publications, Ltd.

Reference8 articles.

1. L.W. Yang: The Application of the Assembly with Fuse and Load Switch Devices in 12 kV Ring Network Cabinet, High Voltage Apparatus, Vol. 39(2003), pp.69-70 (in Chinese).

2. J.M. Wang, X.Y. Bu, and L.Q. Cai: The Determine of Transfer Current of High Voltage Load Switch-fuse Combined Electrical Apparatus, High Voltage Apparatus, Vol. 12(1994), pp.49-53 (in Chinese).

3. T. Takuma, and T. Kawamoto: Numerical Calculation of Electric Fields with a Floating Conductor, IEEE Trans. on Dielectrics and Electrical Insulation, Vol. 4(1997), pp.77-188.

4. J.Y. Xu, C.W. Ren, B. Si, and et al: Three Dimensional Electric Field Analysis of 40. 5kV SF6 Cubicle Gas-insulated Metal-enclosed Switchgear, Proceedings of the CSEE,Vol. 28(2008), pp.136-140 (in Chinese).

5. Y. Gao, Y. Zhou, T.T. Liu, and et al: The Numerical Simulation of the Three Dimensional Electromagnetic Fields of High Voltage Switchgear, Information and Electronic Engineering, Vol. 7(2009), pp.540-544(in Chinese).

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