| I conducted Nan Tun Power plant boiler control system design of the reconstruction project, the original two 75 t / hCFB boiler control system due to the operation of 10 years, the boiler factory manufacturing there are many imperfections and defects. Longwall mining plants based on actual production trends and technological advances in the construction of digital power plant targets to produce centralized control of the carrier, according to the control automation, ease of operation of the complete field equipment, and optimizing operational management, and build industrial Ethernet ring network, construction real-time database.The demand from the analysis of the boiler control system, constructed the system modules, support for background use SQLServer relational database, the system login, user rights management, resource management, boiler control and other subsystems do detailed design and testing, implement system-related functions, ensure that the system can ASP.net technology for dynamic web content management information, provide access to the database, add, modify, delete and other operations, and online sharing of resources.Based on a hierarchical design of the system design. Boiler control system is the control layer, including upper and lower machine component, the use of PID control algorithm to achieve the boiler automatic control; using redundancy technology to make the system more reliable. In order to achieve control requirements, use PLC300, use WinCC software redundancy to achieve hot standby function server. Data transmission via the network layer, application layer and control layer allows interconnected.After the system test run to produce the effect is stable and reliable, to achieve an effective reduction of manual workers, good boiler automatic control. Boiler automatic control, easy management staff analysis to guide field work, to the "anytime, anywhere" regulatory purpose boiler production run to achieve a stage effect boiler control integration. |
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