Research on Reliability of Active Distribution Network with Distributed Photovoltaic

In recent years, as distributed photovoltaics gradually enter the distribution network, the distribution network has changed from a passive system to an active system, and the topology and tidal current operation of the traditional distribution network have undergone tremendous changes. The access of distributed photovoltaics has a huge impact on the reliability, power supply capability and operation of the distribution system. This paper summarizes the active distribution network facility outage model and distributed photovoltaics output model with distributed photovoltaics. By analyzing the electricity consumption characteristics of three common types of loads in cities, a distributed photovoltaic matching degree evaluation model is established for distributed photovoltaic systems. The reliability of the active distribution network is analyzed. The results show that the distributed photovoltaic access distribution network can improve the reliability level of the original system. At the same time, with the increase of distributed photovoltaic capacity under low permeability, the average power outage time of the system, the average number of power outages of the system and the average power shortage of the system gradually decrease, the system reliability is gradually improved.