Risk assessment method for operation of active power distribution network by taking consideration of index correlation

Abstract

The present invention discloses a risk assessment method for operation of an active power distribution network by taking consideration of index correlation. The method takes the consideration of correlation between different indexes to perform risk assessment for operation of an active power distribution network. The method comprises the steps of: 1) analyzing technical content of the active powerdistribution network, and extracting influence factors of safety operation of the active power distribution network; comprehensively considering economy, feasibility and relational degree for faultsof the active power distribution network, screening the influence factors, and establishing a risk assessment index system of operation of the active power distribution network on this basis; 3) analyzing the influence of the correlation of the same-level indexes, the feedback action of the upper and lower levels of indexes and different indexes on the safety operation of the active power distribution network, and determining weights of the indexes; and 4) comprehensively considering probability values and a severities of operation risks of the active power distribution network, establishing arisk assessment model of operation of the active power distribution network, and determining a risk assessment value of operation of the active power distribution network. The risk assessment methodof active power distribution network operation by taking consideration of index correlation can comprehensively consider the influence factors of safety operation of the active power distribution network.

Description

technical field [0001] The invention belongs to the field of smart grids, and in particular relates to a risk assessment method for active distribution network operation in consideration of index correlation. Background technique [0002] In recent years, with the increasingly severe primary energy situation and the continuous growth of electricity demand, countries around the world are actively developing and utilizing alternative new energy sources. More and more attention has been paid to the access of intermittent energy sources such as wind power and photovoltaic power to the distribution network, and it has become a research hotspot at home and abroad. At present, my country has become the country with the largest scale of wind power and the fastest growth of photovoltaic power generation in the world, and the State Grid is currently the grid with the largest scale of new energy access in the world. Because the traditional power distribution system will soon reach its...

AI Technical Summary

Problems solved by technology

However, since there are still many key technologies in the active distribution network that have not been broken through, the ideal active distribution network is still at the theoretical stage. Considering the impact of distributed energy grid-connected, it cannot fully reflect the impact of the active control technology and coordinated management level of the active distribution network on the operation risk of the distribution network, and in the established risk assessment index system, there is a lack of Analysis of the correlation between indicators at the same level and the feedback effect between indicators at the upper and lower levels

Images