基于改进苏霍夫降温算子的电-热混合潮流计算方法

Calculation Methodology for Electric-Thermal Hybrid Power Flow Based on Improved Sukhov Cooling Operator

综合能源系统是一种实现能耗终端供应高效、清洁、经济的能源组织形式。它集成了多种能源间的转换和传输,因此传统的电力系统潮流分析计算方法不再对耦合设备和热力流仿真计算适用。本文提出了一种适用于终端综合能源供应的电-热混合潮流计算方法。首先将热力管网中的苏霍夫降温算子简化,其次建立了电力、热力和水力流的数学描述,并在此基础上运用改进降温算子建立牛顿-拉夫逊快速迭代求解算法的数学模型,并推导了受电-热耦合关系影响的雅可比矩阵元素取值。最后通过一个区域电-热供应系统算例验证了本方法的有效性。

The multi-energy system is a kind of energy organization form which can realize the energy consumption terminal supply efficiently,cleanly and economically.It integrates many kinds of energy conversion and transmission,so the traditional power flow analysis and calculation method is no longer suitable for coupling equipment and thermal flow simulation.This paper presents a hybrid power flow calculation method suitable for terminal multi-energy supply.Firstly,the Sukhov cooling operator in the heat supply network is simplified,and then the mathematical description of power,heat and hydraulic flow is developed.On this basis,the mathematical model of Newton Raphson fast iterative solution algorithm is established by using the improved cooling operator,and the value of Jacobian matrix elements affected by the electric-thermal coupling is derived.Finally,an example of a regional electric-heat supply system is given to verify the effectiveness of this method.