中国电机工程学报2025，Vol.45Issue(7)：2579-2593,中插11,16.DOI:10.13334/j.0258-8013.pcsee.232208
基于CHP物理特性等值建模的气-电-热混合能流统一分析方法
Unified Analysis Method of Gas-electricity-heat Hybrid Energy Flow Based on Physical Characteristic Equivalence Modelling of CHP
摘要
Abstract
For the combined heat and power(CHP)unit featuring a gas-steam combined cycle with an unfired heat recovery boiler,this study establishes fundamental thermodynamic relationships.Firstly,based on energy conservation principles,equivalent relationships between gas mass flow rate and electrical parameters are derived.Subsequently,a comprehensive equivalent circuit model is developed to characterize the gas-to-electricity conversion process,incorporating the physical characteristics of power transformation.Furthermore,mathematical formulations are established to describe the system's gas-heat conversion efficiency,exhaust gas emissions,and operational heat losses,accounting for the thermodynamic principles governing energy transfer and dissipation processes.Accordingly,the CHP's physical characteristic equivalence model can be established,and its control parameters under strategies of"electricity determined by heat"and"heat determined by electricity"are defined.Then,using the Newton method and the principle of pipe-network hydraulic calculation,the correction equations for the power flow and the energy flows of gas and heat systems,as well as their Jacobian element expressions,are derived,thereby proposing a unified analysis method for gas-electricity-heat hybrid energy flow considering the CHP's inherent characteristic parameters varying with the operating conditions of the hybrid system.Finally,the effectiveness and feasibility of the proposed method are validated by the gas-electricity-heat hybrid systems with different control strategies of CHP.关键词
燃气-蒸汽联合循环/余热锅炉/气电变换/气热转换/烟气排放/CHP物理特性等值模型/气-电-热混合能流统一分析Key words
gas-steam combined cycle/heat recovery boiler/gas-electricity transformation/gas-heat conversion/exhaust-gas emission/physical characteristic equivalence model of CHP/unified analysis of gas-electricity-heat hybrid energy flow分类
动力与电气工程引用本文复制引用
彭石,谢宁,王承民,田沛川..基于CHP物理特性等值建模的气-电-热混合能流统一分析方法[J].中国电机工程学报,2025,45(7):2579-2593,中插11,16.基金项目
国家重点研发计划项目(2020YFB2104500).The National Key R&D Program of China(2020YFB2104500). （2020YFB2104500）
