基于以太网的煤矿井下电网防越级跳闸研究

doi:10.11799/ce201410055

Abstract

Abstract:

In order to solve the problem that schemes of preventing over-grade trip can not satisfy the requirement of speed, this paper proposes a scheme of preventing over-grade trip based on switched Ethernet. This paper analyzes the working principle of the protection system, designed an intelligent interlock device. The selectivity of the protection is achieved by sending and receiving interlock signal setting different blocking time of protection at various levels. Finally, the Ethernet is simulated to validate its stability, reliability and real-time performance. The scheme can effectively prevent the occurrence of over-grade trip, to ensure the safe operation of coal mine power supply system.

Key words: switched Ethernet, coal mine, over-grade trip, real-time

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URL: http://www.coale.com.cn/EN/10.11799/ce201410055

http://www.coale.com.cn/EN/Y2014/V46/I10/196

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Research on Preventing Over-grade Trip in Power Grid of Coal Mine Underground based on Ethernet

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