Interval Evaluation Method of Distribution Network Fault Restoration Scheme under Incomplete Index Weight Information

Abstract

The invention discloses a distribution network fault restoration scheme interval evaluation method under incomplete index weight information. On the basis of establishing the restoration scheme evaluation index set, the normalized decision matrix of the restoration scheme interval evaluation is calculated; the approximate range of the index weight is Expressed as interval numbers, calculate the gray relational degree between each restoration plan and the optimal restoration plan to form a gray relational degree matrix; on this basis, establish a single-objective decision-making model to obtain the optimal weight vector of the restoration plan; and then optimize The adjusted optimal index weights are obtained in the model, so that the gray relational value of all recovery schemes is as large as possible; then according to the gray relational value of each fault recovery scheme, the ranking results of the recovery schemes are given. The method of the invention solves the problem of evaluating distribution network fault recovery schemes under incomplete weight information, fully takes into account the information distribution differences of all candidate recovery schemes in the values ​​of evaluation indicators, and the evaluation results are reasonable and credible.

Description

technical field [0001] The invention relates to the technical field of distribution network fault recovery, in particular to an interval evaluation method for distribution network fault recovery schemes under incomplete index weight information. Background technique [0002] Distribution network fault recovery uses a certain fault recovery strategy to operate the tie switch and section switch in the distribution network to quickly restore the power supply in the non-fault outage area. It needs to comprehensively consider the number of switch operations, feeder margins, and load recovery. It is an important content of the self-healing control of the smart distribution network to determine the optimal power supply restoration scheme based on the quantity and other factors. It is of great significance to reduce the losses caused by power outages and improve the economy of the distribution network. In the process of formulating distribution network fault recovery schemes, dispat...

AI Technical Summary

Problems solved by technology

In the process of formulating distribution network fault recovery schemes, dispatchers usually can only grasp the importance of each evaluation index and give a rough range of evaluation index weights, but it is difficult to give the exact weight value of evaluation indicators, that is: in practice In the formulation of the recovery plan, decisions can only be made when the information on the weight of the evaluation index is incomplete

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