Distribution network reliability evaluation method considering light storage continuous load carrying capacity

Abstract

The invention provides a distribution network reliability evaluation method considering light storage continuous load carrying capacity. The method specifically includes the steps of firstly, conducting a clustering analysis on photovoltaic output historical data; then, establishing a photovoltaic output time sequence model under different weather types; and finally, simulating the operating state of a distribution network considering the light storage continuous load carrying capacity through a Monte Carlo method and obtaining a reliability index of the distribution network. The invention is innovative in three aspects: first, taking into account the impact of the time sequence of photovoltaic output on the reliability of the distribution network under the different weather types; second, obtaining an island dynamic division strategy after the failure of the distribution network by calculating the light storage continuous load carrying capacity under a constant confidence level; and third, proposing the distribution network reliability evaluation method considering island operating characteristics.

Description

technical field [0001] The invention relates to the technical field of distribution network reliability evaluation, in particular to a distribution network including photovoltaic power supply, and a distribution network reliability evaluation method that considers the continuous load capacity of photovoltaic storage. Background technique [0002] In recent years, the gradual depletion of fossil energy such as coal and oil has further deepened the energy crisis in the world, and the ecological environment crisis has also deepened day by day, which has prompted countries to vigorously promote the development of renewable and distributed energy. With the development of distributed power generation technology and the active support of policies, a large number of distributed power sources have begun to be connected to the distribution network in various forms. With the increase of penetration rate, the impact of distributed power generation on the operation of distribution network...

AI Technical Summary

Problems solved by technology

Although there are many studies that take photovoltaic access into distribution network reliability assessment, many studies take hours as the sampling interval, and believe that the photovoltaic system meets the load demand at a certain moment when it is running in an island. It can meet the load demand, but in fact, due to the fluctuation of photovoltaics, the photovoltaic output cannot meet the load demand within this hour

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