In order to reduce the adverse effects of distributed photovoltaic grid connection,theoretical analysis is conducted from two aspects:voltage distribution and voltage fluctuation.Simulation analysis is conducted in different scenarios such as setting PV single point access and multi-point access in PSCAD/EMTDC.The results show that the larger the PV access capacity of the same node,the closer the connection position is to the end of the line,and the more significant the increase in voltage amplitude.For an 18 node single radiation line distribution network,The PV access capacity of the terminal nodes of the line should not exceed 0.81MW.
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