A generalized power flow analysis for distribution systems with high penetration of distributed gene
A generalized power flow analysis for distribution systems with high penetration of distributed gene
复制标题
DOI：
10.1016/j.epsr.2011.03.001
复制
发表时间：
2011-07
期刊：
影响因子：
--
通讯作者：
H. Farag;E. El-Saadany;R. Shatshat;A. Zidan
中科院分区：
文献类型：
--
作者：
H. Farag;E. El-Saadany;R. Shatshat;A. Zidan
本文对单元关联矩阵进行了扩展，开发了一套全面的三相配电网辐射状拓扑潮流计算程序。考虑了三相架空或地下一次馈线以及馈线末端附近的两相或单相线段。在系统总线上对恒功率、恒电流和恒阻抗等不同类型的不平衡负载进行建模。以满足馈线沿着电压要求为目标，建立了由三个单相Y形单元或两个单相三角形单元组成的变电站电压调节器模型。将分布式发电（DG）作为PQ和PV节点接入的数学模型集成到潮流程序中，以模拟DG在配电系统中的渗透。所提出的方法已被测试，并与不同的IEEE测试馈线的结果进行了比较。所开发的算法已被用来研究SVR和DG的高渗透对电压分布和系统功率损耗的影响。
In this paper, the element incidence matrix has been extended to develop a comprehensive three-phase distribution system power flow program for radial topology. Three-phase overhead or underground primary feeders and double-phase or single-phase line sections near the end of the feeder laterals have been considered. Unbalanced loads with different types including constant power, constant current and constant impedance are modeled at the system buses. Substation voltage regulator (SVR) consisting of three single phase units connected in wye or two single-phase units connected in open delta are modeled to satisfy the desired voltage level along the feeder. The mathematical model of distributed generation (DG) connected as PQ and PV buses are integrated into the power flow program to simulate the penetration of DGs in the distribution systems. The proposed method has been tested and compared with different IEEE test feeders result. The developed algorithm has been used to study the impact of both SVR and high penetration of DG on voltage profile and system power losses.