Distributed power flow calculation and analysis system for power grid

By obtaining and analyzing the aging information of the main variable tap connector and calculating the number of capacitor adjustments, the voltage control deviation problem caused by the aging of the main variable tap connector is solved, and the safety and stability of the grid voltage level are achieved.

CN120545967APending Publication Date: 2025-08-26XIANGYANG POWER SUPPLY COMPANY OF STATE GRID HUBEI ELECTRIC POWER +1
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Patent Information

Application Number
CN202510611534.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-13
Publication Date
2025-08-26

AI Technical Summary

Technical Problem

The existing distributed current computing and analysis system for power grids fails to effectively pay attention to the aging effect of the main variable tap joint, resulting in voltage control deviations and endangering the safety of the next voltage level. Moreover, the capacitor adjustment and the operation of the main variable tap joint are lacking, which can easily lead to voltage exceeding the standard or reactive imbalance.

Method used

The main variable tap adjustment information is obtained through the power grid hierarchical adjustment information acquisition module, the hierarchical adjustment prediction analysis module evaluates the aging coefficient of the main variable tap and predicts voltage changes, and the hierarchical voltage adjustment processing module calculates the number of capacitor adjustments to achieve seamless connection between main variable adjustment and reactive power compensation.

Benefits of technology

Rationally adjust the number of capacitors at the next voltage level to ensure the safety of the voltage level, avoid safety hazards caused by voltage fluctuations, achieve seamless connection between main variable adjustment and reactive power compensation, and ensure grid stability.

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Abstract

The invention discloses a power grid distributed power flow calculation and analysis system, and relates to the technical field of power grid distributed calculation, and the system comprises a power grid hierarchy adjustment information acquisition module, a hierarchy adjustment prediction analysis module, a hierarchy voltage adjustment processing module and a local database. According to the method, the aging coefficient of a main transformer tap is analyzed, the estimated voltage change value of the next voltage level is dynamically corrected, so that the next voltage level can be reasonably and correspondingly adjusted, and seamless connection of main transformer adjustment and reactive compensation is realized by calculating the number of capacitors needing to be added / cut off by a lower-level power grid in advance before the action of the tap; and according to the current propagation rate and the line distance, the influence time point of the action of the tap on the next level is accurately calculated, and the reactive equipment is ensured to finish adjustment as far as possible when the voltage fluctuation reaches, so that the safety of the next voltage level is ensured.
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