Method and system for resilient distribution network planning considering energy storage configuration under extreme natural disasters

Abstract

The invention discloses a tough power distribution network planning method and system considering energy storage configuration under extreme natural disasters, and relates to the technical field of tough power distribution network planning. The method comprises the steps of considering a toughness concept curve of a power distribution network and calculating annual comprehensive loss-of-load costof the power distribution network; according to a time characteristic and a space characteristic of the extreme natural disasters, considering a whole process from a disaster attack to fault recoveryof the power distribution network, and establishing a multi-stage power distribution line fault state set; considering an investment planning constraint set, a multi-stage power distribution line fault state set and a system operation constraint set, and establishing a power distribution network DAD planning model by taking minimums of annual investment cost of line reinforcement, the annual investment cost of energy storage configuration and the annual comprehensive loss-of-load cost as target functions; and solving by adopting a column and constraint generation algorithm to obtain a coordination scheme of line reinforcement and energy storage configuration under the extreme natural disasters. By adopting the method or the system of the invention, a disaster response capability of the tough power distribution network can be improved, and the investment cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of resilient distribution network planning, in particular to a resilient distribution network planning method and system that considers energy storage configuration under extreme natural disasters. Background technique [0002] In recent years, extreme natural disasters such as typhoons have occurred frequently, causing serious damage to the power system. The traditional power grid N-1 criterion is difficult to deal with multiple failures caused by extreme natural disasters, so the concept of resilience is introduced into the power grid. Specifically in the distribution network, resilience is used to evaluate the ability of the distribution network to reduce the loss caused by faults and restore the normal power supply state as soon as possible under extreme natural disasters. [0003] At present, the research on resilience of distribution network mainly focuses on two aspects: resilience assessment...

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Problems solved by technology

However, most of the existing DAD models take the minimum load loss as the objective function, ignoring the consideration of time, and cannot be used to reflect the characteristics of limited energy storage capacity.

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