Power Flow Analysis of Distribution Network Considering the Correlation Between Distributed Photovoltaic and Load

The output of distributed PV power is limited by conditions such as light intensity and temperature and humidity, and presents a strong randomness in the operation process, which makes the active distribution grid current containing PV also present a stochastic character. At the same time, the volatility of the distribution network load also affects the system current distribution. Considering the correlation between PV and load, probabilistic analysis is used to study the impact of PV access on distribution network and analyze the voltage and current fluctuation of distribution network. On this basis, the PV access mode can be planned more reasonably, the network current can be optimized, and the voltage overrun probability of nodes can be reduced, thus supporting the scale access of distributed PV. The analysis of actual cases shows the correctness and effectiveness of the method proposed in this paper.