Abstract
To obtain the practical power flow algorithm for distribution network with distributed photovoltaic (PV), the change in phase and amplitude of calculated node voltage with number of iterations, and computation time of the Newton-Raphson algorithm, back/forward sweep algorithm and implicit Z bus Gaussian algorithm are obtained for 5-node circular distribution network with distributed photovoltaic. The results show that the Newton-Raphson algorithm can not converge and can not be used in the circular distribution network with PV. Both back/forward sweep algorithm and implicit Z bus Gaussian algorithm can converge and their results are consistent, but the computation time of the latter is almost 1/3 of the former. The latter is recommended for power flow calculation for annular distribution network with distributed PV.
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