中国电机工程学报2024，Vol.44Issue(16)：6432-6443,12.DOI:10.13334/j.0258-8013.pcsee.232248
综合能源系统分析——从数值到解析(一):气网解析法
Integrated Energy System Analysis——From Numerical to Analytical(Ⅰ):Analytical Method in Natural Gas System
摘要
Abstract
Traditional numerical methods face the challenges posed by abundant variables and approximation errors,as well as difficulties in ensuring stability.To fulfill these gaps,this article proposes an analytical method for the first time to achieve higher precision,lower complexity,and strong feasibility in integrated energy system analysis.As the first part of the serial studies,this paper focuses on the analysis of the natural gas system(NGS).First,the generalized analytical solution to the gas flow dynamics is derived and the transformation from partial different equations(PDEs)to algebraic equations without approximation errors is realized.Based on the analytical properties,the equivalent representations of the branch and network models in NGS are developed in sequence to further reduce the model complexity.The simulations in different cases indicate the significant superiority of the analytical method in accuracy and efficiency.With a similar computational cost,the analytical method can improve the accuracy dozens of times over the numerical methods.关键词
综合能源系统/天然气系统/数值法/解析法/偏微分方程Key words
integrated energy system/natural gas system/numerical method/analytical method/partial differential equation分类
信息技术与安全科学引用本文复制引用
张苏涵,顾伟,陆帅,俞睿智,庄文楠..综合能源系统分析——从数值到解析(一):气网解析法[J].中国电机工程学报,2024,44(16):6432-6443,12.基金项目
国家杰出青年基金项目(52325703).The National Science Fund for Distinguished Young Scholars(52325703). （52325703）
