Study And Application In Automatic Power Control System Of Underground Mines

Underground power supply, drainage and upgrade system is the core of production equipment for underground mining. Accident power supply, drainage and blind shaft hoisting operation of downhole equipment in Shandong Mining Limited, difficult to repair, and the lack of remote monitoring and dispatching system as a whole, can not meet the needs of the development of modern mine. Therefore, transformation and is very important to set up the network monitoring and scheduling system aiming at the defects of the above three systems.Optimization of power supply system in this paper, the mine microcomputer integrated protection device(RCS-9611CS), combined with the actual situation of the design features of various protection and monitoring functions, increase underground-140 m substation control computer, to achieve local and underground power supply system remote automatic control and operation of data sharing. Blind shaft hoisting system to automatically control the use S7-300 series PLC and ET200 type combination, use NT-hoist AC variable speed system to achieve stepless speed regulation and smooth each speed range conversion in the 2-50 Hz range, safety circuit and The key signals are used to enhance the two-wire multiple protection, use WinCC configuration management software, system more secure. Drainage system is optimized to S7-300 series PLC as the core, using computer control, the full manual drain into manual / automatic control mode, while updating two 10 Kv pumps. Drainage Control in averting valley dominated pumps work alternately combined to achieve economic purpose running smoothly. Three optimization combined with the actual configuration of mining equipment, can be remote control operation. Through the research can be safely in the production and emergency response, and reliable operation of automated control system, which provides support for the data and application examples Deep Development Project Phase II mine.Optimization of the three systems that Sinosteel Shandong Mining Company Limited production of more modern, more secure, and has a wide application range, the prospect is good, which provides a basic platform for mine safety development, technology development and innovation development.