Method and system for planning and evaluating new energy acceptance capability of transformer substation

Through the evaluation method of the new energy acceptance capacity planning of substations, a substation with access conditions is selected, the total social investment amount and power abandonment rate of the entire life cycle of different new energy access plans is calculated, and the optimal new energy installation planning scheme is determined, which solves the problem of low comprehensive utilization efficiency of power grid equipment and achieves the effect of effectively controlling the cost of the whole society.

CN119721746APending Publication Date: 2025-03-28STATE GRID JIANGSU ECONOMIC RES INST
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Patent Information

Application Number
CN202411664639.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively improve the comprehensive utilization efficiency of power grid equipment and meet the local, nearby and low consumption requirements of new energy. Traditional power planning and access ideas are difficult to adapt to the demand for rapid growth of new energy.

Method used

A method for planning and evaluation of new energy acceptance capacity of substations is proposed. By selecting substations with access conditions, obtaining and normalizing the lifting and down load and new energy historical output data, calculating the total social investment amount and new energy power abandonment rate of different new energy access plans, and establishing an optimization function to determine the optimal new energy installation planning scheme.

Benefits of technology

It effectively controls the total cost of new energy access in the whole society, improves the comprehensive utilization efficiency of power grid equipment, and provides a more reasonable reference for new energy planning and grid landing point selection.

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Abstract

The invention discloses a method and system for planning and evaluating the new energy acceptance capability of a transformer substation, and the method comprises the steps: selecting transformer substations with access conditions in a target region, and forming a new energy access scheme set according to the selected transformer substations; acquiring buck-boost load and new energy historical output data of each transformer substation in the target area, and obtaining an intra-area load and new energy output characteristic curve; based on the load in the region and the new energy output characteristic curve, the total life cycle social investment amount and the new energy power abandoning rate of different new energy access schemes of each transformer substation are obtained through calculation, and an evaluation index data set is formed; according to the evaluation index data set, an optimization function with the lowest whole-society investment of new energy unit installation as a target is established, the optimal value of the new energy consumption capacity and the optimal value of the power abandoning rate in the region are obtained through calculation, and an optimal new energy installation planning scheme is determined; the method mainly considers the total cost of accessing the new energy to the whole society, thereby effectively controlling the cost of the whole society, and improving the comprehensive utilization benefit of power grid equipment.
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