Design And Implementation Of Auxiliary Control System Of Millionunit Power Plant Based On PLC

With the development of national electric power situation, Millions of units of thermal power plant in China has been rapid development. At the same time, along with the extensive application of development of computer technology and automation technology, the plant auxiliary shop control network system has been more and more widely used in power plant control system. Millions of units of thermal power plant,the application of auxiliary control network system of the power plant automation level, information level and management level have been significantly increased, for fewer people on duty or even unmanned and further create a first-class power plant has laid a solid foundation.This thesis is based on the construction of2×1000MW power plant auxiliary control network project by Jiangsu Changshu Power Generating Co.,Ltd. Firstly, the paper introduced technological process of power plant. System planning and technology to Changshu power plant auxiliary control system are discussed in detail. Then, carries on the elaboration to the hardware design of the auxiliary control system from the auxiliary network, coal network, water network and ash network configuration, and the realization of the function of the control system are discussed.At present, the actual operation results show that, the design of auxiliary network control system can realize the effective contrl of power plant auxiliary workshop equipment, and collaborative enterprise management information system, to achieve the integration of management and control target. Since the Changshu power plant auxiliary control system put into operation, and achieved good evaluation.