Design Of Thermal Performance Calculation Software For Thermal Power Plant

With the continuous improvement of capacity for thermal power plant, thermal system structure is becoming ever more complicated. Hand calculation methods and software using traditional programming often stuck to a specific plant. While thermal system configuration or method of internal connection is changed, the software is needed to modify the code, which limits the speed of calculating and levels of comfort. With the appearance of software engineering and high level language, the development of thermal performance calculation software for thermal power plant is available.The thermal equipment and system was taken as main object of study in this paper,and the computational model was established. For the requirements of the software, the thermodynamic properties of water and steam was researched. At last, the architecture of thermal performance calculation software for thermal power plant was designed. The main contents and achievements of the paper were as follows:â‘ The current situation and significance of thermal performance calculation software were introduced. Based on the development and application of thermal performance calculation software for thermal power plant, the software requirements analysis was done to apply software engineering.â‘¡The calculation of regenerative system is the key of the thermal calculation. Through the research on different thermal system construction, the module of thermal system was devided. The thermal performance calculation software in this paper had a function of configuration. Therefore, drain switch was introduced in physical model of heater. And general mathematical model of regenerative system which contained switching coefficient was proposed.â‘¢According to the need of thermal performance calculation software, the thermodynamic properties equation of water and steam IAPWS-IF97 was researched and the procedures of thermodynamic properties of water and steam was programmed. For the purpose of computational efficiency and accuracy, the partitioning algorithm was deeply researched to apply thermodynamic principles which was embodied in algorithm. Each computation module was processed to apply optimization method according to arrangement rule of index in each region.â‘£The method of system's configuration in thermal performance calculation software was researched. The thermal economical index a N300-16.65/537/537 thermal power plant was calculated in this paper.