Fault recovery method applied to intelligent distribution network and based on load balance

Abstract

The invention discloses a fault recovery method applied to an intelligent distribution network and based on load balance, which includes the following steps: 1, one intelligent distribution terminal is respectively installed at the position of each switch of the intelligent distribution network, each intelligent distribution terminal is regarded as an Agent, and all the Agents are connected with each other through the optical Ethernet network, 2, each Agent automatically determines a fault zone, a non-fault zone and a fault recovery zone through information interaction; 3, the fault of the agent at the position of each interconnection switch is recovered; 4, all the Agents perform information interaction to judge whether a load shedding zone exists, if the load shedding zone exists, the step 5 is carried out; otherwise, a fault recovery task is completed; 5, the Agent in the load shedding zone searches whether a DG capable of achieving plan islet operation exists in the load shedding zone, if exists, power supply recovery commands are sent to the Agent at the position of a DG outlet; otherwise, a load at the zone is removed from the distribution network; and 6, the Agent at the position of the DG capable of achieving the plan islet operation recovers power supply for a load at the zone according to the fault recovery method in the step 3, and the load which fails to be recovered is removed from the distribution network.

Description

technical field [0001] The invention relates to a fault restoration method based on load balancing applicable to an intelligent distribution network, and belongs to the technical field of distribution network fault restoration and the technical field of intelligent distribution network. Background technique [0002] With the development of smart grid and the improvement of users' requirements for power supply quality and reliability, it is imperative to establish a strong smart distribution network with self-healing function and a corresponding fault recovery system. Distribution network fault recovery is a multi-objective, nonlinear, multi-constraint combinatorial optimization problem. The fault recovery of the traditional distribution network is realized either by the master station relying on the information transmitted with the feeder terminal unit (FTU), or by relying on the cooperation of intelligent switchgear, but there is no information interaction, see Liu Jian, Ro...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the traditional distribution network fault recovery method that the fault recovery speed is slow and the load balance of each feeder after the fault recovery cannot be realized, and a fault recovery method based on load balance suitable for intelligent distribution network is proposed

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