Research And Development Of Partial Modules For Integrated Thermal Production And Operation Management System

The heating radius of thermal power plants is getting larger and larger,and the distribution of thermal users is becoming more and more scattered.Thermal users have higher and higher requirements for the heating quality of thermal power plants.However,the traditional heat supply management is extensive,the operation efficiency of the heating system is low,and the heat loss is large.The fine level of thermal production scheduling and management of thermal power plants needs to be improved.The integration of Internet,industrial control,remote communication and other technologies can integrate all the businesses of thermal power plants from thermal power production to operation management into one management platform system.This paper takes the combined cycle unit and its heating system of a gas turbine power plant as the research object,and conducts the research and development of the heating network monitoring subsystem,power generation and heat dispatching subsystem and emergency response subsystem in the integrated management system.The integrated system consists of three layers: a centralized control layer,a data service layer,and a terminal control layer.It has multiple functions such as demand planning management,power generation and heat dispatch,thermal user parameter control,emergency state handling,and comprehensive information management.The monitoring subsystem of heat supply network adopts B / S architecture,and GPRS is used as the communication scheme between remote terminal and centralized control center.Based on the analysis of the functional requirements of the monitoring subsystem,the functional framework of the system is built.The development of heat supply network monitoring subsystem based on Java platform mainly includes map navigation,site monitoring,report generation,authority allocation,user management and other functions,which has good expansibility and maintainability.Based on the analysis of the factors affecting the generation and heating of gas steam combined cycle units,a mathematical model of the energy consumption characteristics of the units is established.Based on this model,the optimal load distribution algorithm between units with different operation modes is given to realize the design and development of power generation and heat dispatching system.After calculation,the optimal load distribution can effectively reduce fuel consumption,and achieve the lowest comprehensive energy consumption and the best energy efficiency level for power generation and heating of thermal power plants.By analyzing the impact of heating interruption on thermal users,the thermal users can be set up in different levels.At the same time,combined with the resistance characteristics and thermodynamic characteristics of the pipe network,the hierarchical management strategy of heat users under the condition of limited heating capacity of thermal power plants is formulated,and the design and development of emergency disposal system is realized.Through calculation,the best heating scheme under the current heating capacity is obtained to ensure the safety and economy of the heat supply network under emergency state to the maximum extent.The integrated management system for heat production and operation integrates the functions of on-demand heating,automatic adjustment,decentralized control,centralized management,scientific decision-making,etc.,which is in line with the trend and requirements of refined heating production and operation management.The thermal power production and operation integrated management system developed in this article has been put into operation on site,which can effectively guide operators to rationally adjust operating conditions,meet production needs,reduce operating costs,and improve the overall operating efficiency of the power plant.It has good application value and Promotion prospects.