Analysis of Steady-state Characteristics of Thermal Subsystem in Integrated Energy System

Lu QU; Bin OUYANG; Zhichang YUAN; Shuqing ZHANG; Rong ZENG

doi:10.12096/j.2096-4528.pgt.19154

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Analysis of Steady-state Characteristics of Thermal Subsystem in Integrated Energy System

Distributed Energy System | 更新时间：2025-07-04

- Analysis of Steady-state Characteristics of Thermal Subsystem in Integrated Energy System
- Power Generation Technology Vol. 41, Issue 3, Pages: 237-244(2020)
- 作者机构：
  
  电力系统及发电设备控制和仿真国家重点实验室(清华大学电机工程与应用电子技术系), 北京市海淀区 100084
- 作者简介：
- 基金信息：
  
  National Key Research and Development Program(2018YFB0905105)
- DOI：10.12096/j.2096-4528.pgt.19154
  CLC： TM721
- Received：24 October 2019，
  
  Published：30 June 2020
- 稿件说明：
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Lu QU, Bin OUYANG, Zhichang YUAN, et al. Analysis of Steady-state Characteristics of Thermal Subsystem in Integrated Energy System[J]. Power Generation Technology, 2020, 41(3): 237-244.
DOI：

Lu QU, Bin OUYANG, Zhichang YUAN, et al. Analysis of Steady-state Characteristics of Thermal Subsystem in Integrated Energy System[J]. Power Generation Technology, 2020, 41(3): 237-244. DOI： 10.12096/j.2096-4528.pgt.19154.

摘要

综合能源系统（integrated energy system，IES）涵盖能源形式多样，涉及运行模式复杂，包含控制设备和耦合环节丰富，给其稳态建模和稳态潮流计算带来了挑战。为了获取综合能源系统中热力子系统的稳态特性，给出了典型综合能源系统的拓扑架构；分别建立了电力子系统、热力子系统、冷力子系统和分布式能源站的稳态模型，进而建立了混合潮流模型，并利用Newton-Raphson算法进行了混合潮流求解；分析了热力子系统的关键技术参数（包括源节点的供水温度、负荷节点的出水温度、热网管道的长度和直径、热负荷功率）变化对综合能源系统稳态潮流的影响。分析结果可支撑综合能源系统的规划、设计及优化运行。

Abstract

The integrated energy system (IES) includes various energy forms

complex operation modes

abundant control equipment and coupling links

which brings challenges to its steady-state modeling and steady-state power flow calculation. In order to obtain the steady-state characteristics of the thermal subsystem in the IES

the topological structure of the typical IES was provided; the steady-state models of the power subsystem

the thermal subsystem

the cold subsystem and the distributed energy station were established respectively

and then the hybrid power flow model was established

and the Newton-Raphson algorithm was used to solve the hybrid power flow; the influence of the key technical parameters (including the water supply temperature of the source node

the water outlet temperature of the load node

the length and diameter of the heat network pipe

and the heat load power) on the steady-state power flow of the IES was analyzed. The analysis results can support the planning

design and optimal operation of the IES.

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