Multi-stage power supply recovery method for active power distribution network comprising flexible multi-state switch

Abstract

A multi-stage power supply recovery method for an active power distribution network comprising a flexible multi-state switch comprises the following steps: inputting active power distribution networkinformation according to a selected active power distribution network; according to active power distribution network information, creating an active power distribution network multi-stage power supply recovery model containing the flexible multi-state switch by comprising steps of setting the minimum sum of unrecovered load power, switching action times and network operation loss of an active power distribution network as an objective function; respectively considering an activation state constraint, a radial topology constraint, an activation sequence constraint, an action time mapping constraint, a flexible multi-state switch flexible power supply recovery strategy, an active power distribution network operation constraint and a load and distributed power supply recovery constraint; andsolving the model by adopting a second-order cone programming method, and outputting a solving result. The calculation burden is effectively reduced, the active power distribution network multi-stagepower supply recovery strategy considering the cooperation of the flexible multi-state switch control mode and the traditional switch action sequence is obtained, and the operability of the power supply recovery strategy is improved.

Description

technical field [0001] The invention relates to a power supply recovery method of an active distribution network, in particular to a multi-stage power supply recovery method of an active distribution network including a flexible multi-state switch. Background technique [0002] Power supply restoration is crucial to improving the self-healing control capability of the active distribution network. Through the coordination and cooperation of various controllable resources in the active distribution network, the load can be quickly transferred to ensure the continuous power supply of important loads and improve the reliability of the system power supply. After a fault occurs, traditional power supply recovery methods usually use the actions of tie switches, section switches, and load switches to change the network topology state, and use distributed power sources to provide power support. However, because the traditional switch does not have the voltage support capability, the ...

AI Technical Summary

Problems solved by technology

[0004] The existing power supply recovery method based on the flexible multi-state switch cannot give the action sequence of the flexible multi-state switch and the traditional switch, and it is difficult to ensure the safe operation of the system during the multi-stage power supply recovery process, and the action sequence will directly affect the total amount of load recovery

Images