Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (4): 90-95.doi: 10.16180/j.cnki.issn1007-7820.2019.04.020

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Power Flow Calculation of AC/DC Hybrid Micro Grid with Weighting Coefficient

YI Ming1,WANG Shilong2,FAN Yumeng1   

  1. 1. School of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China
    2. State Grid Jiujiang Power Supply Company,Jiujiang 443002,China
  • Received:2018-09-09 Online:2019-04-15 Published:2019-03-27
  • Supported by:
    National Natural Science Foundation of China(51877122)


In the power flow calculation of AC/DC hybrid micro grid under droop control, the diagonal elements of the Jacobi matrix are zero and the matrix cannot be solved. In response to these phenomena, an improved power flow calculation algorithm with weighting coefficient was proposed. The weighting coefficient which could be solved by constructing error sum of squares is applied on F(k) and F(k+1). The solution of iteration k+1 was obtained according to the relation between iteration k+1 and iteration (k). The process above was stopped until the result converges. The proposed algorithm was proved to be correct and effective by using the example of IEEE30 node, and it was applied on the power flow calculation of AC/DC hybrid micro grid under droop control.

Key words: droop control, AC/DC hybrid micro grid, Jacobi matrix, weighting coefficient, error sum of squares, power flow

CLC Number: 

  • TP301