Active power distribution network partition multi-time scale cooperative control method, system and device

By determining the order of partitioning and adjusting the resource response of the active distribution network, combined with the optimization strategy of multi-time scales, the problems of bidirectional overlimiting of the distribution network voltage and poor resource regulation flexibility are solved, and voltage stability and efficient resource utilization are achieved.

CN119765521AActive Publication Date: 2025-04-04STATE GRID HEBEI ELECTRIC POWER RES INST +2
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Patent Information

Application Number
CN202411931437.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-04-04
Estimated Expiration
2044-12-26

AI Technical Summary

Technical Problem

In the context of energy transformation, the active distribution network faces problems such as voltage overrestriction and poor resource regulation flexibility, especially when the grid-connected regulation capacity of large-area distributed power supply is limited.

Method used

By obtaining the distribution network operation data, partitioning it, and determining the voltage sensitivity index of each node in each partition. According to the response capability level of the adjustment resources and voltage sensitivity indicators of the adjustment resources, the response order of each node in each partition is determined. Then, through day-to-day, and real-time optimization, a multi-time scale adjustment strategy is established to achieve coordinated control of the distribution network.

Benefits of technology

This method can give full play to the performance advantages of source grid load regulation resources, improve the stable voltage operation level of the active distribution network, and improve the regulation flexibility and resource utilization efficiency of the power grid.

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Abstract

The invention is suitable for the technical field of electric power, and provides an active power distribution network partition multi-time scale cooperative control method, system and device, and the method comprises the steps: determining a voltage sensitivity index of each node in each partition according to the operation data of a power distribution network; according to the adjustment resource tracking response performance, dividing response capability levels, and according to the response capability levels and the voltage sensitivity indexes, determining a response sequence of adjustment resources of each node in the partition; and according to the response sequence, determining a day-ahead adjustment strategy of hour-level adjustment resources of each partition through day-ahead optimization, determining an intra-day adjustment strategy of hour-level and / or minute-level adjustment resources of each partition through intra-day optimization, and determining an intra-day adjustment strategy of minute-level adjustment resources of each node. Performing real-time optimization to obtain a second-level and below resource adjustment strategy of each node; and controlling the adjustment resource based on the adjustment strategy. The method can improve the voltage stable operation level of the active power distribution network and reduce the line loss.
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