Urban power grid toughness improvement planning method and device considering extreme survivability

By establishing a system limit survival demand model and a multi-level local grid resilience planning optimization decision model, the problems of insufficient dynamic survivability and lack of multi-voltage level redundancy in urban power grids in the existing technology are solved, and the stability and risk resistance of urban power grids are improved.

CN119692647AActive Publication Date: 2025-03-25BEIJING JIAOTONG UNIV +1
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Patent Information

Application Number
CN202411460032.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-18
Publication Date
2025-03-25
Estimated Expiration
2044-10-18

AI Technical Summary

Technical Problem

The existing grid resilience planning methods fail to fully consider the dynamic viability of urban power grids under extreme events and the redundancy of multi-voltage levels, resulting in insufficient grid recovery capabilities in extreme survival situations.

Method used

By analyzing the dynamic response capabilities of extreme survival for urban power grid systems, a system limit survival demand model is established that takes into account the power structure and dynamic capabilities, and a multi-level local grid resilience planning optimization decision model is established based on this model to obtain a planning scheme for urban power grid resilience improvement.

Benefits of technology

It effectively improves the stability and risk resistance of urban power grids, ensures that the power grid can quickly resume normal operation in extreme events, and improves the redundancy and adaptability of multi-voltage levels.

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Abstract

The invention provides an urban power grid toughness improvement planning method considering limit survivability. The method comprises the following steps: obtaining demand analysis of limit survival on dynamic response capability of an urban power grid system; according to the demand analysis, establishing a system limit survival demand model considering power supply composition and dynamic capability; and establishing a multi-level local power grid toughness planning optimization decision model based on the system limit survival demand model, and solving the multi-level local power grid toughness planning optimization decision model to obtain an urban power grid toughness improvement planning scheme. According to the toughness improvement planning considering the dynamic demand and the steady demand of the local power grid, the urban power grid toughness improvement planning method considering the limit survival dynamic capability is provided, so that the frequency safety guarantee capability of converting the power system into local power grid operation after the power system suffers from a large fault is improved, and the economic operation benefit of planning measures is guaranteed.
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