84-W8865B01B DCS Distributed control system
84-W8865B01B DCS Distributed control system, by a number of computers control a number of control loops in the production process, but also centralized data acquisition, centralized management and centralized control of the automatic control system. The distributed control system uses a microprocessor to control each circuit, and uses a small and medium-sized industrial control computer or a high-performance microprocessor to implement the upper level of control. Information is exchanged between the loops and between the upper and lower levels through high-speed data channels. The distributed control system has the functions of data acquisition, direct digital control, man-machine interaction, monitoring and management. Distributed control system is developed on the basis of computer supervisory control system, direct digital control system and computer multi-level control system. It is a relatively perfect control and management system for production process. In the distributed control system, the microprocessor is installed near the measuring device and the control actuator according to the region, so that the control function is dispersed as much as possible and the management function is relatively centralized. This decentralized control method can improve the reliability of control, and will not cause the whole system to lose control due to computer failure. When the management level fails, the process control level (control loop) still has independent control ability, and the failure of individual control loop will not affect the overall situation. Compared with computer multilevel control systems, distributed control systems are more flexible in structure, more reasonable in layout and lower in cost.
84-W8865B01B Distributed control system (DCS) is a new type of control system based on microprocessor, with microcomputer decentralized control, centralized operation and management, and advanced computer technology, communication technology, CRT technology and control technology, namely 4C technology. With the rapid development of modern computer and communication network technology, DCS is developing in the direction of diversification, networking, openness, and integrated management, so that different types of DCS can be interconnected, data exchange, and can be connected to the DCS system and factory management network through Ethernet to achieve real-time data Internet access, which has become the mainstream of process industry automatic control.
84-W8865B01B In recent years, the production industry has further improved the level of comprehensive automation of factories, focusing on the construction of information technology, especially the thermal power plants around the plant have proposed suitable for their own factory plant monitoring information system (SIS) to improve production efficiency, to achieve the data exchange between the factory management information system and a variety of decentralized control systems. The plant level real-time monitoring information system is based on the decentralized control system, with the purpose of economic operation and improving the overall efficiency of power generation enterprises, and adopts advanced, applicable and effective professional calculation methods to realize information sharing within the whole power plant, real-time information monitoring and scheduling of the plant level production process, and improve the reliability of unit operation. It provides real and reliable real-time operation data for power plant management to make decisions, and provides scientific and accurate economic indicators for enterprises under market operation.
DCS is the short for Distributed Control System (Distributed Control System), and it is commonly called distributed control system in China. It is a multilevel Computer system composed of process Control level and process monitoring level with Communication network as the link, integrating computer (Computer), communication (Communication), display (CRT) and control (Control) etc. The basic idea is decentralized control, centralized operation, hierarchical management, flexible configuration and convenient configuration.