Disperse relaxation factor tidal current model based minimum electricity generating cost incremental quantity obtaining method

Through the method of obtaining the minimum power generation cost increment based on the decentralized relaxation factor power flow model, using the Lagrangian function and the dual interior point method, the problem of unrealistic λ in the power system is solved, and the controllability and efficient solution of λ are achieved. .

CN104616081AInactive Publication Date: 2015-05-13HOHAI UNIV
3 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV
Filing Date
2015-02-10
Publication Date
2015-05-13
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing technology is difficult to quickly and effectively obtain and control the minimum power generation cost increment λ in the power system, especially when the total load of the system changes, resulting in the required λ not meeting the actual situation.

Method used

The minimum power generation cost increment acquisition method based on the decentralized relaxation factor power flow model is adopted. By establishing the decentralized relaxation factor power flow calculation model and the minimum power generation cost increment calculation model, the Lagrangian function and the dual interior point method are used to solve the control system λ The number of iterations is small and fast.

Benefits of technology

It makes the required λ more consistent with the actual situation, maintains efficient convergence and robustness, the system λ is controllable, the number of iterations is small, and the acquisition speed is faster.

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Abstract

The invention discloses a disperse relaxation factor tidal current model based minimum electricity generating cost incremental quantity obtaining method. When a minimum electricity generating cost incremental quantity model only containing one balance node tidal current model is solved, the total demand unit change of a system is fixed on a balance node, and an obtained lambda, namely electricity generating cost minimum incremental quantity cannot reflect actual operation of the system in most cases during total demand unit change of a system. The disperse relaxation factor tidal current model based minimum electricity generating cost incremental quantity obtaining method adopts solves the provided model by means of an original antithesis interior point method, and the lambda of the system is controllable according to selected disperse relaxing factors.
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Citation Information

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