| Along with huge progress of the science and technology and swift development of the electric power industry, large capacity, high parameter, big unit have become the most important development direction for large-scale thermal power plant in our country. Since the first superecritical unit in HuaNengQinBei power plant had a successfully operation, the supercritical unit has become the most important part in our country. At the same time, the research of the supercritical unit's coordination control question is also urgent, as a result of the supercritical unit's direct-current-operating characteristic, the variable-element-movement way, the multivariable- control characteristic, and the big differences comparing with the subcritical steam drum stove in the control aspect, therefore it has the profound significance in the safety-operation and the energy–conservation-consume of studying the supercritical unit's CCS.A coordinated control system is the control center of a power generation unit, and is the core of a modern power plant. This dissertation studies the design and optimization of the coordinated control system of a power unit via first frequency modulation's control theories and methods, with the motivation to apply advanced control strategies in engineering practice and to improve the adaptability of the coordinated control system to the process nonlinearities.Firstly, this article carries has the elaboration theoretically on coordination control system, namely to the coordination control system in unit's function, classification and the movement way, secondly the paper has the Detailed introduction on ccs's classical control scheme. As the author has participate the operation's design and improvement of the PingWei 3# the supercritical unit , Specially in first frequency modulation's improvement, and get the Optimized result at last , and after improving the system investment control characteristic has carried on the statement and the appraisal. |
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