面向多时间断面的电-热综合能源系统分布式协同状态估计方法  

Distributed Cooperative State Estimation Method of Electric-Heat Integrated Energy System Based on Multiple Time Sections

作　　者：李滔滔 周登极[1] 马世喜 黄地 LI Taotao;ZHOU Dengji;MA Shixi;HUANG Di(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Grid Jiangsu Entrepreneurship and Innovation Center,Nanjing 211102,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]国网江苏双创中心,南京211102

出　　处：《动力工程学报》2023年第5期655-662,共8页Journal of Chinese Society of Power Engineering

基　　金：宁夏回族自治区重点研发计划资助项目(2022ZDYF1483);中德交流中心资助项目(GZ1577)。

摘　　要：针对电-热综合能源系统,提出了一种面向多时间断面的状态估计方法,考虑了热能传输时间延迟特性对当前估计时刻的影响,采用电网侧和热网侧的测量数据综合估计系统状态量;应用分布式协同求解方法,建立了状态估计求解框架,依据子系统耦合特性对每一个网侧的估计数据实行边界约束,改进结果精度,完成时间窗的推移。结果表明:面向多时间断面的状态估计方法在小时间尺度下能够更准确地跟踪监测系统的实时运行状态,估计能力维持在较稳定的水平,对降低计算误差、提高求解效率具有积极意义。A state estimation method based on multiple time sections for the electric-heat integrated energy system was proposed.The influence of heat transmission time delay characteristics on the current estimated time was considered.The measurement data on the grid side and the heating network side were used to comprehensively estimate the state of the system.Additionally,the distributed cooperative solution method was applied to establish a state estimation solution framework.According to the coupling characteristics of subsystems,the boundary constraints were implemented on the estimated data of each network side to improve the accuracy of the results and complete the passage of time window.Results show that the state estimation method based on multiple time sections can more accurately track the real-time operating state of the monitoring system in a small time scale,and the estimation ability is maintained at a relatively stable level.Additionally,it has a positive significance to reduce the calculation errors and improve the solving efficiency.

关 键 词：综合能源系统 状态估计 动态特性 热电联产 耦合节点 时间尺度 

分 类 号：TM714[电气工程—电力系统及自动化]