Math Modeling And General Calculating Software Exploit Of Coal Power Plant Thermodynamic System

Along with the electric market expanding gradually, managers of coal power plants can not satisfied with that units are working orderly. They also want that the units should be run economically and steadily. Performance calculation and heat economic analysis on-line is very significance to economic operation and energy saving of coal power plant.The thesis focuses on general math modeling of heating system,real-time heat economic analysis and relatively software program design and realization . the main contents are as follows:Performance calculation of heat economic about thermodynamic system of coal power plant is a basic method in design thermodynamic system,analyzing and directing safety economic operation of coal power plant. on the basic of heat equation method, a general math modeling of heater is developed., as well as a lots of real-time math modeling of heating system, such as math modeling of heat economic analysis,relative internal efficiency of HP cylinder,relative internal efficiency of MP cylinder and LP cylinder,utilization of blow down water tank,steam make-up of deaerate and steam leakage of seal gland. The actual character of heating system was considered of when these mathematical modeling set up, all these math modeling is very useful to exploit the software about general calculation and heat economic analysis of coal power plant heating system.In the thesis, heat economic analysis of coal power plant is one of the tasks to be discussed emphasis. and a method to confirm the operation index of thermodynamic system is brought out based on the theory of heating system because of the difficulties of usual method, the method is very simple and practicality. thereby, bother is avoided to make certain operation index with the method of "unit test" and "calculation about off-design performance". Besides, a software on general calculation of coal power plant heating system is exploited in Visual C++6.0, the software compose heating system through "character value", which has many merits like configuration agility,simple and easy use, etc. during the operation of units, heating system can be configured again easily without the software exploiter if the heating system changed, so the software has a merit on general calculation of coal power plant. Finally, a general ActiveX control about history curve line based on COM(Component Object Model)is designed and realized in MFC. the control connects with history database through interface by ADO. and the control looks very beautiful and it can display eight color-various curve lines, furthermore, the curve line selected can be hide at any moment. especially, the current value and the current time, as well as a red erect line will be displayed in the control when mouse moved.