Study on Impact of Grid Connection of Distributed Photovoltaic System on Distribution Network Peak-valley Difference Considering Photovoltaic Volatility

摘要

In this paper,firstly an IEEE 13 node feeder system simulation model is established in Matlab/simulink.Then,taking into consideration the typical photovoltaic output fluctuation and daily load curve of the distribution network,and with simulation method,the study obtains the value of the system peak-valley difference considering the superposition of fluctuation of load and photovoltaic output.Furthermore,the paper studies the relationship between the peak-valley difference and the photovoltaic access modes,as well as capacity and operating condition,thus drawing the law of influence of connected photovoltaic system on peak-valley difference.The conclusions of the study can provide an operation reference for the determination of photovoltaic-grid-connection scheme and the peak regulation and planning of distribution network with connected photovoltaic system.