Design of the ring network-based pit-head coal preparation equipment centralized control system at Yanjiahe Mine

The failure of coal preparation equipment frequently occurs, causing the pile-up of raw coal at pit-head due to the use of outdated equipment control mode. In order to tackle this problem, a coal preparation equipment control system-electric motor monitoring & control system-man/machine interactive system integrated centralized control system is designed, following an analysis of the specific site and operating conditions, and by reference to the commonly used coal preparation equipment control modes. The schemes adopted for the control of equipment, motors and man/machine interactive system are respectively PLC master-slave stations + DLR ring network, comprehensive protection + screenless data substation + fiber optic ring network, and one industrial computer with 2 monitors. The application of the centralized control system has led to noticeably higher stability, reliability and efficiency of the raw coal preparation system.