考虑负荷类型的配电网三相潮流计算方法  

Three Phase Power Flow Calculation of Distribution Network Considering Load Characteristics

作　　者：张泽中 苏宏升[1] ZHAGN Zezhong;SU Hongsheng(College of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《济南大学学报（自然科学版）》2018年第3期227-233,共7页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金项目(61263004)

摘　　要：针对传统的牛顿拉夫逊法三相潮流计算时存在运算量大、效率低且无法处理实际配电网中不同负荷类型的问题,提出一种考虑负荷类型的三相潮流计算的改进的牛顿拉夫逊法;该算法采用由恒功率负荷、恒电流负荷及恒阻抗负荷结合起来组成的多项式模型,并在传统的牛顿拉夫逊法的基础上将雅克比矩阵简化分裂,对分裂后的矩阵求解,从而提高三相潮流计算效率;通过对青海省黄化电网康三路10 k V线路进行潮流计算,验证该算法的可行性及有效性,并分析系统电压与负荷类型的关系。结果表明:该算法能处理含不同负荷类型的三相配电网系统;恒功率负荷比例的减少使得系统节点电压增大。Aimed at the problems such as large amount of calculation,low efficiency,and failing in treating different load types in the actual distribution network of traditional Newton-Raphson method for three-phase power flow calculation,a modified Newton-Raphson method considering the type of load for three-phase power flow calculation was proposed.The algorithm used the polynomial model of constant power load,constant current load and constant impedance load combined,and based on the traditional Newton Raphson method,the Jacobian matrix was simplified to split matrix after splitting and then improve the efficiency of three-phase power flow calculation.Through the power flow calculation of 10 kV line of Huanghua Power Grid in Qinghai province,the feasibility and effectiveness of the algorithm were verified,and the relationship between the system voltage and load type was analyzed.The results show that the proposed algorithm can treat the three-phase distribution network with different load types,and the decrease of proportion of the constant power load leads to the increase of system node voltage.

关 键 词：配电网 负荷类型 三相潮流计算 牛顿拉夫逊法 

分 类 号：TM743[电气工程—电力系统及自动化]