Risk assessment method for power flow out-of-limit management strategy of power distribution network with high-proportion photovoltaic access

By establishing a power flow over-limit risk indicator system and weight calculation method, the risk assessment problem of power flow over-limit management strategy in distribution networks with a high proportion of photovoltaic access is solved, ensuring the safe and stable operation of the distribution network.

CN120634216APending Publication Date: 2025-09-12GUANGXI POWER GRID CORP +1
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Patent Information

Application Number
CN202510486383.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-17
Publication Date
2025-09-12

AI Technical Summary

Technical Problem

Existing technologies fail to effectively evaluate the flow over-limit management strategy for distribution networks with a high proportion of photovoltaic access, resulting in threats to network security and stability, and traditional methods fail to accurately assess risks.

Method used

The operational risk theory is used to establish a tidal over-limit risk index system. The index weights are calculated by combining the improved hierarchical analysis method, critical thinking method and subjective and objective combination method. The risk assessment is performed using the alternative strategy ranking method of the compromise strategy.

Benefits of technology

It achieves accurate risk assessment of the current over-limit management strategy for high-proportion photovoltaic access distribution networks, providing safe and effective operation support.

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Abstract

The invention discloses a high-proportion photovoltaic access power distribution network power flow out-of-limit management strategy risk assessment method, and belongs to the technical field of power system risk assessment. The method comprises the steps of establishing a power distribution network flow out-of-limit risk index system according to an operation risk theory; calculating weight assignments of the indexes based on an improved analytic hierarchy process, an evaluation method and a subjective and objective combination method; and based on index weight assignment, carrying out risk sorting on the power flow out-of-limit management strategies by adopting an alternative strategy sorting method based on a compromise strategy. The power flow out-of-limit strategy risk assessment method can realize accurate power flow out-of-limit strategy risk assessment, and provides important support for safe and effective operation of a power distribution network power flow out-of-limit management strategy with high-proportion photovoltaic access.
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