The dry quenching coke hoist system of Coal Chemical Company contains a lot of types of equipment,and the degree of automation of the electrical control section is high.The PLC of the main station is redundantly configured and communicates with other sub-stations of the process section through the redundant control network,which covers a wide area.The drive system is a com-mon DC bus,the lifting part has 2 sets of inverters dragging 2 sets of 250 kW lifting motors,and there are another 2 sets of traveling inverters.The interlocking conditions of the whole control system are complicated,leading to many types of electrical faults.Based on the actual experience of dis-posal of electrical faults of dry quenching coke hoist,the emergency measures are summarized and the optimization scheme is proposed.
维普
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