A method and system for evaluating the risk of wire operation and a terminal device thereof

By constructing a radial temperature distribution thermal path model and a temperature-mechanical performance degradation model, the problem of identifying the differentiated degradation behavior of the conductor's internal layers was solved, enabling refined and dynamic risk assessment of each layer within the conductor and improving the accuracy and timeliness of risk warning.

CN122631165APending Publication Date: 2026-08-25ELECTRIC POWER RES INST OF GUANGDONG POWER GRID CO LTD
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Patent Information

Application Number
CN202610810272.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-05
Publication Date
2026-08-25

AI Technical Summary

Technical Problem

Existing technologies cannot accurately reflect the significant radial temperature gradient inside the conductor caused by uneven solar radiation distribution, uneven current distribution among strands, and skin effect. They also cannot identify the differential degradation behavior of the layers of materials inside the conductor, leading to inaccurate risk assessment.

Method used

By acquiring real-time line current, surface temperature, operating tension, and structural parameters of the conductor, a radial temperature distribution thermal path model is constructed. Combined with interlayer contact thermal resistance and temperature-mechanical property degradation model, the tensile strength and safety margin of each conductor layer are calculated, enabling a refined and dynamic evaluation of each layer inside the conductor.

Benefits of technology

It enables refined and dynamic assessment of failure risks in each layer of the conductor, improves the accuracy and timeliness of risk warning, and ensures the safe and stable operation of the power transmission system.

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Abstract

The application discloses a kind of conductor operation risk assessment method, system and its terminal equipment, belong to conductor state assessment technical field, this method is: based on real-time operating tension and conductor structure parameter acquisition interlayer comprehensive contact thermal resistance set;Based on real-time line current, conductor structure parameter and preset skin effect coefficient calculation unit length heat generation rate, based on unit length heat generation rate and interlayer comprehensive contact thermal resistance set constructs radial temperature distribution thermal circuit model;Conductor surface layer temperature and ambient temperature are input in radial temperature distribution thermal circuit model to obtain real-time temperature;Based on real-time temperature and temperature-mechanical property degradation model obtains tensile strength, to based on tensile strength and conductor structure parameter calculation limit bearing capacity;Based on real-time operating tension to obtain actual share load and calculate safety margin, to based on safety margin and preset safety threshold value output the risk assessment result of to-be-measured conductor, realize to the precise dynamic evaluation of each layer failure risk in conductor internal.
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