A Three-phase Hybrid Power Flow Algorithm for Meshed Distribution System with Transformer Branches and PV Nodes

Hongwei Li; Huabing Wu; Biyu Jiang; Anan Zhang; Wei Fang

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자료유형: 학술저널

저자정보: Hongwei Li (Southwest Petroleum University) Huabing Wu (Southwest Petroleum University) Biyu Jiang (Southwest Petroleum University) Anan Zhang (Southwest Petroleum University) Wei Fang (Southwest Petroleum University)

저널정보: 대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.11 No.1

발행연도: 2016.1

수록면: 65 - 75 (11page)

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Aiming at analyzing the power flow of the distribution systems with distribution transformer (DT) branches and PV nodes, a hybrid three-phase power flow methodology is presented in this paper. The incidence formulas among node voltages, loop currents and node current injections have been developed based on node-branch incidence matrix of the distribution network. The method can solve the power flow directly and has higher efficiency. Moreover, the paper provides a modified method to model DT branches by considering winding connections, phase shifting and off-nominal tap ratio, and then DT branches could be seen like one transmission line with the proposed power flow method. To deal with the PV nodes, an improved approach to calculate reactive power increment at each PV node was deduced based on the assumption that the positive-sequence voltage magnitude of PV node is fixed at a given value. Then during calculating the power flow at each iteration, it only needs to update current injection at each PV node with the proposed algorithm. The process is very simple and clear. The results of IEEE 4 nodes and the modified IEEE 34 nodes test feeders verified the correctness and efficiency of the proposed hybrid power flow algorithm.

#Distribution transformer #Meshed distribution system #Node-branch incidence matrix #Power flow #PV nodes

참고문헌 (26)

참고문헌 신청

T. Chen, M. Chen, K. Hwang, P. Kotas, and E. Chebli, “Distribution system power flow analysis: A rigid approach,” IEEE Trans. Power Deliv., vol. 6, no. 3, pp. 1146-1152, 1991.

Ray D. Zimmerman, Hsiao-Dong Chiang, “Fast decoupled power flow for unbalanced radial distribution systems,” IEEE Trans. Power Syst., vol. 10, no. 4, pp. 2045-2051, 1995.

Zhang F，Cheng C S, “A Modified Newton Method for Radial Distribution System Power Flow Analysis,” IEEE Trans. Power Syst., vol. 12, no. 1, pp. 389-397, 1997.

P. A. N. Garcia, J. L. R. Pereira, S. Carneiro, et al, “Three-phase power flow calculations using the current injection method,” IEEE Trans. Power Syst., vol.15, no. 2, pp. 508-514, 2000.

M. Abdel-Akher, K. Nor, and A. Rashid, “Improved three-phase power-flow methods using sequence components,” IEEE Trans. Power Syst., vol. 20, no. 3, pp. 1389-1397, 2005.

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