A Study on the Impact of Photovoltaic Power Network-Connected on Voltage and Power Loss of Distribution Network

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Abstract

The quantity and direction of active and reactive power in transmission of distribution circuit have changed after introducing 10kV low-voltage distribution grid into photovoltaic power supply. This paper researches the changes of voltage amplitude and total power loss in each load node after the radial distribution grid in different locations incorporated into photovoltaic power supply of different capacities. The author conducted an example simulation on 33 node distribution grid, and then conducted the theoretical analyses on characteristics of voltage distribution, interconnected location of PV power and the biggest interconnected level limit.