Substation quantum key distribution system environment adaptation and security assessment method and system

By acquiring and processing key component data in the substation quantum key distribution system, calculating environmental adaptability and security indicators, and building a decision tree model and a multi-level scoring model, the dynamic evaluation and optimization of the system are realized, solving the multi-dimensional challenges of environmental adaptability and security assessment.

CN119696772APending Publication Date: 2025-03-25STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +1
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Patent Information

Application Number
CN202411771045.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

In the environmental adaptability assessment of the quantum key distribution system of substations, there are challenges in multi-dimensional data acquisition and processing, including the time synchronization and high preprocessing complexity of heterogeneous data, the incomplete index calculation model, the difficulty of dynamically adjusting the weight of evaluation indexes, and the organic combination of multi-level indicators in security assessment and the comprehensive evaluation of the overall performance of the system.

Method used

By obtaining the key component data of the quantum encrypted communication system, filtering, smoothing processing and outlier elimination, calculating electromagnetic compatibility, temperature adaptability and spatial layout efficiency indicators, building a decision tree model to dynamically adjust the weight of the evaluation index, simulate typical working conditions of the substation in a digital twin environment, using a multi-level scoring model for security evaluation, and combining dynamic weights to calculate the overall safety and performance evaluation scores of the system.

Benefits of technology

It realizes dynamic evaluation of the quantum key distribution system in the complex electromagnetic environment of the substation, combines environmental adaptability and security assessment, and provides an important basis for system optimization and actual deployment.

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Abstract

The invention provides a transformer substation quantum key distribution system environment adaptation and safety assessment method, which comprises the steps of performing preprocessing such as filtering, smoothing and abnormal value elimination on acquired original data, and synchronizing all the data to a unified time axis; a decision tree model is constructed, nodes comprise environmental factors such as electromagnetic interference and temperature fluctuation, and the weight of each evaluation index is dynamically adjusted according to real-time environmental data; the method comprises the following steps: simulating various typical environments of a transformer substation in a digital twin environment, generating virtual test data, and performing experimental verification on various indexes of a quantum key distribution system; a multi-level scoring model is adopted to perform weighted scoring on levels such as light source safety, detection safety and decoy state protocol conformity; and calculating the overall security and performance evaluation score of the quantum key distribution system according to the dynamic weight output by the decision tree model in combination with the score of each level.
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