SIS (Supervisory Information System in plant level) is in a coal-fired power plant DCS distributed control system and associated auxiliary plant control system with MIS management information system of a real-time between the SIS is the number of power plants an important part. SIS system is the economic unit of the diagnosis, plant-level economic analysis, plant-level load distribution, as well as units for the main purpose of the economy. SIS system is the realization of coal-fired power plant information, an important part of knowledge-based, real-time, plant-level analysis and optimization of economic performance is the outstanding feature of SIS system. SIS system embodied in the real-time: real-time analysis of unit operating parameters, the system's powerful data mining, data-processing functions and optimization of plant-wide units as well as accurate performance analysis, diagnosis and optimization; SIS system works characteristics reflected in the level: The system covers the entire plant DCS control information and auxiliary data information system and analysis of the whole plant to run the economy on the basis of plant-wide optimization of the operation.
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