Economic Dispatching of Integrated Heat and Electric System Based on Feasible Region of District Heating System

QIAN Kejun; LI Jie; LI Yafei; ZHU Dan; LI Yuanqi; ZHANG Suhan; LU Shuai

doi:10.13296/j.1001-1609.hva.2025.05.007

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Economic Dispatching of Integrated Heat and Electric System Based on Feasible Region of District Heating System

The Key Technologies for Energy Conservation and Carbon Reduction in New Power Systems | 更新时间：2025-05-25

- Economic Dispatching of Integrated Heat and Electric System Based on Feasible Region of District Heating System
- High Voltage Apparatus Vol. 61, Issue 5, Pages: 64-71(2025)
- 作者机构：
  
  1.国网江苏省电力有限公司苏州供电分公司，江苏　苏州　 215000
  2.东南大学，南京　 210000
- 作者简介：
- 基金信息：
  
  Science and Technology Project Funding of State Grid Jiangsu Electric Power Co., Ltd.(J2022044)
- DOI：10.13296/j.1001-1609.hva.2025.05.007
  CLC：
- Received：29 November 2024，
  
  Revised：11 February 2025，
  
  Published：16 May 2025
- 稿件说明：
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QIAN Kejun, LI Jie, LI Yafei, et al. Economic Dispatching of Integrated Heat and Electric System Based on Feasible Region of District Heating System[J]. High voltage apparatus, 2025, 61(5): 64-71.
DOI：

QIAN Kejun, LI Jie, LI Yafei, et al. Economic Dispatching of Integrated Heat and Electric System Based on Feasible Region of District Heating System[J]. High voltage apparatus, 2025, 61(5): 64-71. DOI： 10.13296/j.1001-1609.hva.2025.05.007.

摘要

文中研究了基于热网可行域的电热综合能源系统（integrated heat and electric system，IHES）经济调度问题，以实现经济调度问题的快速、精确计算。首先，建立了电热综合能源系统的基本模型描述了多能流的分布，包括基于改进直流模型的电力系统模型、基于偏微分方程的供热系统（district heating system，DHS）动态模型和基于可行域的耦合设备模型。接着，通过一种全解析方法将偏微分形式的热网模型转化为显式的代数方程组，并通过网络等值推导热网可行域模型，在维持精度的同时实现热网动态模型的降维。在此基础上，进一步考虑电热综合能源系统的运行安全约束，结合热网可行域模型建立电热综合能源系统经济调度模型，以此实现运行成本的最小化。最后，通过算例仿真对比，验证了基于全解析法的热网可行域模型在电热综合能源系统经济调度问题中的效率、精度优势。

Abstract

In this paper

the economic dispatching of integrated heat and electric system (IHES) based on feasible region of district heating system (DHS) is studied to achieve fast and accurate calculation of economic dispatching. Firstly

the basic model of IHES is set up to describe the multi-energy flow distribution

including the power system model based on an improved DC model

the dynamic DHS model of system based on partial differential equations (PDE) and the feasible region-based coupling equipment model. Then

the PDE-based DHS model is transformed in-to explicit algebraic equations by a fully analytical method (FAM)

and the feasible region model of the DHS is derived through network equivalence. The dimensionality reduction of the dynamic DHS model is consequently achieved while the accuracy is maintained. On this basis

the safe operation constraints of the IHES is considered further and

combined with the feasible region model

the economic dispatching model of the IHES is set up so to achieve minimum operational cost. Finally

the advantages of efficiency and accuracy of the DHS based on the FAM in the economic dispatching of integrated and electric system is verified by comparison of the simulation examples.

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