Multi-dimensional dynamic trust evaluation method and system for new energy power terminal

By combining multi-dimensional data processing and the node2vec algorithm with a real-time data-driven trust assessment method, the multi-dimensional, dynamic, and novel attack identification problems of trust assessment for new energy power terminals are solved. This enables three-dimensional, accurate, and rapid assessment and response of terminal trust, thereby improving the security and stability of new energy power systems.

CN121644149APending Publication Date: 2026-03-10DATANG HENAN CLEAN ENERGY CO LTD
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Patent Information

Application Number
CN202511724119.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-22
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

New energy power terminals face problems such as a single trust assessment dimension, insufficient dynamism, difficulty in assessing new terminals, and weak ability to identify new types of attacks. Traditional methods are unable to comprehensively and accurately assess the trust status of terminals, leading to potential security risks in the power system.

Method used

By employing multi-dimensional data processing and standardization, direct trust calculation based on node2vec, trust assessment based on message traffic dimension, and trust assessment based on historical interaction behavior, combined with a 24-hour sliding window and time decay factor, we can achieve real-time updates of trust values ​​and multi-level trust threshold management. We can also enhance the ability to identify new types of attacks by optimizing algorithms using Bayesian models.

Benefits of technology

It enables multi-dimensional, dynamic, and accurate trust assessment of new energy power terminals, avoids misjudgment based on a single dimension, adapts to system expansion needs, improves anomaly response speed and operation and maintenance efficiency, and enhances system security protection capabilities.

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Abstract

The invention discloses a multi-dimensional dynamic trust evaluation method and system for a new energy power terminal, and the method comprises the steps: extracting the universal features of the terminal based on terminal log interaction data, extracting special knowledge evidence according to an equipment level perception layer and a network layer, and converting all features into 0-1 standardized values; when a terminal accesses for the first time, the static attribute of the terminal is complementarily collected, so that an initial trust baseline is established and an initial trust value is given; firstly, an IoT device interaction diagram is constructed, nodes are terminal devices, attributes are knowledge evidence vectors, edges are device direct interaction relations, and weights of the edges are defined by historical interaction quality; fusing the equipment knowledge evidence and the interaction relationship through a node2vec algorithm to generate a low-dimensional embedded vector; and finally, calculating the cosine similarity of the device vectors, multiplying the cosine similarity by the interaction frequency proportion to obtain the direct trust degree of the 0-1 interval, and quantifying the direct trust relationship between the devices. Performing trust evaluation on the message flow dimension; and historical interaction behavior trust evaluation and timeliness optimization.
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