Active power distribution network multiple-fault restoration strategy by taking renewable energy intermittence into consideration

Abstract

The invention discloses an active power distribution network multiple-fault restoration strategy by taking renewable energy intermittence into consideration. The active power distribution network multiple fault restoration strategy includes the steps of establishing an active power distribution network multiple-fault staged restoration strategy model to set priority for the active power distribution network power supply resources with restoring maximal power-off loads and retaining the island stability as a goal, providing a two-stage scheduling strategy for a two-stage model, solving the active power distribution network multiple-fault staged model trough an algorithm combining a depth-first searching algorithm and improved bacteria colony chemotaxis (DBCC), and using matlab 7.10 for simulation. The method divides a first-aid repair process into two stages according to time sequence, an active power distribution network multiple-fault staged restoration strategy model is established to make a power supply resource scheduling strategy, so that the key power-off loads can be restored rapidly, the total economic loss caused by fault can be reduced, and the stability of island power supply can be ensured. The matlab 7.10 is used for simulation to verify that the method can rapidly restore the power-off loads, and effectively reduce total economic loss.

Description

technical field [0001] The invention relates to the field of quick restoration of multiple faults in an active distribution network, in particular to a multi-fault restoration strategy for an active distribution network considering the intermittent nature of renewable energy. Background technique [0002] With the access of distributed energy resources (DER) with a high penetration rate to the distribution network, the control methods and communication technologies possessed by the traditional distribution network are difficult to meet its new development requirements. Active distribution network (ADN) uses flexible network topology to manage power flow, and actively controls and manages distribution systems for local DERs. As the terminal network of the power system, the distribution network will cause serious economic losses in the event of a failure. How to coordinate and dispatch the emergency recovery resources of the active distribution network to quickly restore the p...

AI Technical Summary

Problems solved by technology

[0002] With the high penetration rate of distributed energy resources (DER) connected to the distribution network, the control methods and communication technologies owned by the traditional distribution network are difficult to meet its new development requirements

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