A Multiple Blocking Control Method for Distribution Network Based on Load Aggregator's Optimal Hierarchy

Abstract

The present invention relates to a method for controlling multiple blockages in a distribution network based on the optimization and classification of load aggregation quotients. All load aggregators and demand response period information of congestion management, according to the reliability index of load aggregators and the comprehensive load transfer distribution factor model, use gray weighted clustering to classify load aggregators; S3. Obtain the congestion management of load aggregators Cost information, taking the minimum cost of congestion management as the optimization objective function to establish an optimization model of distribution network congestion management, and using opportunity constraints to generate transmission line congestion management schemes according to the classification results of load aggregators. Compared with the prior art, the present invention has the advantages of ensuring higher reliability of the system with a small increase in the cost of blocking management, and effectively resisting the phenomenon of re-blocking of the system caused by the uncertain output of photovoltaics.

Description

technical field [0001] The invention relates to the technical field of blockage management after the blockage of a distribution network occurs, in particular to a method for controlling multiple blockages of a distribution network based on the optimization and classification of load aggregation quotients. Background technique [0002] With the development of society and economy, the electricity load of the power grid continues to rise, especially the increase of air-conditioning load and electric vehicle charging load in the distribution network. Operates close to the stability limit. If the power flow of the system is not properly adjusted, the power flow of some lines with weak power transmission capacity in the distribution network will exceed the limit, resulting in blockage of the distribution network. [0003] Investing in the replacement of distribution lines, transformers and other on-grid power equipment is the most direct and effective way to alleviate distributio...

AI Technical Summary

Problems solved by technology

If the power flow of the system is not adjusted reasonably, the power flow of some lines with weak transmission capacity in the distribution network will exceed the limit, resulting in distribution network congestion.

[0003] Investing in the replacement of distribution lines, transformers, and other in-grid power equipment is the most direct and effective way to alleviate distribution grid congestion, but this method is capital-intensive congestion management and only generates value at peak loads, further reducing grid operation. efficiency

In addition, direct control methods can be used to eliminate line power flow violations, such as network reconfiguration of the distribution network, limiting load power consumption, or calling auxiliary equipment, etc., but such methods will affect users' satisfaction with electricity consumption. Moreover, the related operations in the scheduling control process are complicated

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