Research On The On-Line Performance Monitoring System In Heat-Supply Units

Title: Research on the On-Line Performance Monitoring System in Heat-Supply UnitsName: DONG YihuaSupervisor: Prof. WANG PeihongSchool: Southeast UniversityText: Models of on-line peformance monitoring system in heat-supply units are researched in the thesis. The main contents and achievements of the thesis are as follows: 1. Introduction of general algorithm models in on-line peformance monitoring system. Such as data pre-handling models,boiler arithmetic models,turbine arithmetic models,auxiliaries arithmetic models,etc.2. Research on extensible arithmetic models. Real-time calculating arithmetic research on LP efficiency of turbine,based on the definition and model of the under-work factor of the extracted steam,a new model of LP efficiency is established; Algorithm research of performance models for heat-supply units by cycle functions,by using cycle function method,economy performance models for heat-supply units are established and effect of saving energy is evaluated,based on characteristic coefficient and equation of heat-supply units,new distribution method of heat rate between heating and power generation is put forward,which leads to the new models of economy performance; Characteristic coefficients and the application to the converted efficiency,based on the meaning of characteristic coefficients,convert the energy of supplied heater to flux of main steam, emission steam, and the quantity of electric power,then the economy of heat-supply units can be analysised.3. Analysis on dynamic error and research on real-time arithmetic models for reheat steam unit in on-line performance monitoring. Based on the dynamic characteristic and inherent mechanism in the changing course of heating load,logical models in performance monitoring are developed.4. On-line performance monitoring system for 300MW heat-supply unit in Taiyuan NO.1 Power Plant is developed. Computer networks technology,Automatic software technology,thermal power generation technology and advanced management technology are integrated in the system.