The Analysis of an Accident in Coal Mine which Caused by Short-Circuit of 6kv High-Pressure Explosion-Proof Switch

Abstract:

To describe 6kv high-pressure explosion-proof switches, the main device of ensuring the safe operation of in coal mine power supply system, are widely used in coal mine, which can complete the mission of underground high-voltage power supply and distribution and the controlling of high-pressure water pump motor. The short-circuit of high-pressure explosion-proof switch is not a common fault, but the event usually cause a large area power outage, especially at high gas underground mine, which is a serious threat to production safety. In this paper, the analysis of switch short-circuit accident triggered by the isolating switch shows the reason of the accident, and we can summarize the relevant experiences and lessons learned.

• Periodical: Applied Mechanics and Materials (Volumes 143-144)
• Pages: 27-31
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.143-144.27
• Online since: December 2011
• Authors: M.H. Hu, Y.L. Lv, Na Wang
• Keywords: High-Pressure Explosion-Proof Switches, Isolating Switch, Short-Circuit

References

[1] H.X. Meng and M.H. Hu: Coal Engineering, Vol. 30(2009)No. 2, p.223.

[2] K. Cheng, L. Zhang and C.Q. Sun: Power System Protection and Control, Vol. 37(2009)No. 24, p.137.

[3] S. Q. and G.Y. Yue: China Coal, Vol. 36(2010)No. 7, p.78.

[4] H.B. Li: Coal Technology, Vol. 28(2009)No. 5, p.34.

[5] G. L. Zu and G.Y. Yang: Explosion-Proof Electric Machine, Vol. 43(2008)No. 5, p.22.