Method and system for evaluating comprehensive frequency modulation performance of hybrid pumped storage system considering adjustment wear

By using the hierarchical analysis method, entropy weight method and coefficient of variation method to calculate the weight of the evaluation index in the mixed pumped storage system, the problem of insufficient accuracy of the performance evaluation of the mixed pumped storage system in the existing technology is solved, and a comprehensive evaluation of the system's adjustment wear and frequency recovery effect is achieved, which improves the operating safety and economicality of the system.

CN119651660APending Publication Date: 2025-03-18HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411693269.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The accuracy of evaluating the performance of hybrid pumped storage systems in the prior art is poor, especially in the absence of an effective evaluation method in consideration of regulating wear.

Method used

The evaluation index weight of the mixed pumped storage system was calculated using the hierarchical analysis method, the entropy weight method and the coefficient of variation method, and the evaluation index system was constructed to reflect the adjustment state of the system, and a comprehensive evaluation was conducted through the nonlinear weighting method.

Benefits of technology

The coordinated response status of the hybrid pumped storage system is accurately evaluated, and the coordinated response performance of the system that regulates wear and frequency recovery effects is comprehensively evaluated, which improves the operating safety and economicality of the system.

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Abstract

The invention belongs to the technical field of power systems, and particularly discloses a hybrid pumped storage system comprehensive frequency modulation performance evaluation method and system considering adjustment wear. According to the method, the evaluation index system used for reflecting the performance adjustment state of the to-be-evaluated hybrid pumped storage system is obtained, the weight corresponding to each evaluation index in the evaluation index system is calculated by adopting the analytic hierarchy process, the entropy weight method and the variable coefficient method, and finally the performance adjustment state of the to-be-evaluated hybrid pumped storage system is evaluated according to each evaluation index and the weight corresponding to each evaluation index. And evaluating the hybrid pumped storage system to be evaluated. According to the method, the cooperative response state of the to-be-evaluated hybrid pumped storage system can be evaluated, the system cooperative response performance considering the system adjustment wear and the frequency recovery effect is comprehensively evaluated, and the performance of the to-be-evaluated hybrid pumped storage system is accurately evaluated; reasonable decision support is provided for scheduling strategy optimization of the hybrid pumped storage system to be evaluated, and the operation safety and economical efficiency of the pumped storage system are improved.
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