Improved Power Flow Algorithm for Distributed Ring Network Based on Loop Analysis

doi:10.12096/j.2096-4528.pgt.18232

Abstract

Abstract:

In order to improve the ability of clean energy consumption and the reliability of power supply, distribution network operation is attracting more and more attention. In view of the non-convergence of the traditional forward and backward substitution method, an improved power flow algorithm for distribution network with ring network was proposed by combining the loop analysis method with the forward and backward generation power flow algorithm. The branch current was decomposed to compensate the split-point current, and the non-convergence phenomenon was changed. The validity and accuracy of the algorithm were verified by data simulation with Matlab.

Key words: distribution network, distributed generation, loop operation, loop analysis, forward and backward substitution method

CLC Number:

TK01
TM727

Si GU, Xiao SUN, Chang MA, Jing CHEN. Improved Power Flow Algorithm for Distributed Ring Network Based on Loop Analysis[J]. Power Generation Technology, 2020, 41(6): 675-680.

Figures/Tables 8

Fig.1 Basic unit of power flow calculation

Fig.2 Ring network equivalent splitting point

Fig.3 Breadth-first search

Fig.4 Flow chart of improved power flow algorithm based on loop analysis

Fig.5 IEEE-33 node power distribution system

Fig.6 IEEE-33 node power distribution system branches and branches

Fig.7 Algorithm convergence curve

Fig.8 Node voltage distribution

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