综合能源热力潮流节点标幺值模型及算法实现  

Node per unit value model and algorithm implementation for thermalpower flow in integrated energy system

作　　者：陈晓 齐文斌[2] 平原 谭志海[2] 刘兴艳 CHEN Xiao;QI Wenbin;PING Yuan;TAN Zhihai;LIU Xingyan(Guian Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guian 550001 Guizhou,China;Beijing Sifang Automation Co.,Ltd.,Beijing 100085,China)

机构地区：[1]贵州电网有限责任公司贵安供电局,贵安550025 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力大数据》2020年第5期38-45,共8页Power Systems and Big Data

摘　　要：针对综合能源热力潮流回路模型的诸多不便:用电力网络节点模型与热力网络回路模型组合,实时计算过程中,网络拓扑形成节点之后,搜索形成多个独立的最小热力回路,用最小回路模型做潮流计算;为方便与电网潮流的节点模型组合,提高综合能源潮流计算的算法效率和收敛性能,通过研究热力网络潮流节点标幺值模型,用热力节点的供水温度、回水温度、供水压力、回水压力作为热力网络状态量,用回水、供水节点净注入流量为零、回水、供水节点节点的注入能量为零作为基础模型,采用拟牛顿法解热力潮流非线性方程组,只计算一次雅可比矩阵并求逆,通过递推来实现潮流计算,克服了牛顿法需要多次求导求逆的缺点,避免了搜索实时网络回路,方便与电力网络节点模型联合求解,适合大规模热-电联合系统中的潮流计算。In view of the inconvenience of the integrated energy thermal power flow loop model,this paper combines the power network node model with the thermal power network loop model.In the process of real-time calculation,after the network topology forms nodes,searches and forms multiple independent minimum thermal power loops,and uses the minimum loop model to do the power flow calculation;In order to facilitate the combination with the node model of power flow and improve the algorithm efficiency and convergence performance of integrated energy flow calculation,Based on the study of the unit value model of the power flow node in the thermal network,the water supply temperature,return water temperature,supply pressure and return water pressure of the thermal node are used as the state quantity of the thermal network,the net injection flow of the return water and supply node is zero,the injection energy of the return water and supply node is zero as the basic model,and the quasi Newton method is used to solve the nonlinear equations of thermal power flow.The Jacobian matrix is only calculated once and inversed.The power flow calculation is realized by recursion.This method overcomes the shortcomings of Newton method which needs to seek the inverse multiple times,avoids searching the real-time network circuit,is convenient to solve jointly with the node model of power network,and is suitable for the power flow calculation in large-scale combined thermal electric system.

关 键 词：热力网络 潮流计算 节点模型 标幺值 综合能源 

分 类 号：TM744[电气工程—电力系统及自动化]