Abstract
Through the investigation and test of the interference of AC power supply in coal mine, it is found that when the high-power equipment is started or stopped, the obvious voltage drop phenomenon is often caused on the power network, which affects the reliable work of the safety monitoring system connected to the power network. This paper tests the situation of voltage drop on site, and analyzes and verifies the influence of this kind of voltage drop on the stable operation of the monitoring system. When the voltage drops, the equipment may restart, which seriously threatens the normal production safety. Finally, in order to ensure the safe and stable operation of the monitoring system, this paper puts forward some suggestions on the design of uninterrupted power box.
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