TY - GEN
T1 - A novel three phase load flow algorithm based on symmetrical components for distribution systems
AU - Xiaoning, Kang
AU - Jiale, Suonan
AU - Guobing, Song
AU - Wei, Fu
AU - Bo, Zhiqian
PY - 2008
Y1 - 2008
N2 - The majority of distribution systems are either unearthed or indirectly earthed, resulting in practically no zero sequence voltages and currents during normal operation. Based on this assumption, a novel three phase load flow algorithm is proposed. The three phase power at the PQ node is first decomposed into positive sequence power, negative sequence power and the coupled power. The load flow for the positive sequence network can then be solved using conventional iterative algorithms, and the negative sequence network load flow can be solved by means of simple algebra. Finally, the three phase load flow is obtained by inverse symmetrical component transformation. In this algorithm, the unbalanced three phase load flow is simplified into positive sequence power flow. With the order of Jacobian matrix reduced from 3n×3n to n×n, the complexity and computational cost are reduced significantly. The load flow analysis of a real 28-node distribution system confirms the validity of the proposed algorithm.
AB - The majority of distribution systems are either unearthed or indirectly earthed, resulting in practically no zero sequence voltages and currents during normal operation. Based on this assumption, a novel three phase load flow algorithm is proposed. The three phase power at the PQ node is first decomposed into positive sequence power, negative sequence power and the coupled power. The load flow for the positive sequence network can then be solved using conventional iterative algorithms, and the negative sequence network load flow can be solved by means of simple algebra. Finally, the three phase load flow is obtained by inverse symmetrical component transformation. In this algorithm, the unbalanced three phase load flow is simplified into positive sequence power flow. With the order of Jacobian matrix reduced from 3n×3n to n×n, the complexity and computational cost are reduced significantly. The load flow analysis of a real 28-node distribution system confirms the validity of the proposed algorithm.
KW - Distribution systems
KW - Symmetrical component
KW - Three phase load flow
UR - https://www.scopus.com/pages/publications/68949214428
U2 - 10.1109/UPEC.2008.4651510
DO - 10.1109/UPEC.2008.4651510
M3 - 会议稿件
AN - SCOPUS:68949214428
SN - 9788889884096
T3 - Proceedings of the Universities Power Engineering Conference
BT - 2008 Proceedings of the 43rd International Universities Power Engineering Conference, UPEC 2008
PB - IEEE Computer Society
T2 - 43rd International Universities Power Engineering Conference, UPEC 2008
Y2 - 1 September 2008 through 4 September 2008
ER -