一种分布式线路故障检测方法

By analyzing the historical fault locations and types of the lines, generating fault status values, constructing a set of early warning thresholds, and monitoring and comparing parameter changes in real time, the thresholds are dynamically updated. This solves the problem of limited adaptability and accuracy of fault detection in existing technologies, and achieves precise fault location and operation and maintenance decision support.

CN120999902BActive Publication Date: 2026-07-17YUNNAN YUNTA POWER ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YUNNAN YUNTA POWER ENG CO LTD
Filing Date
2025-08-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for distributed line fault detection cannot dynamically optimize warning thresholds based on historical fault data, which limits the adaptability and accuracy of fault detection and makes it impossible to accurately locate the fault.

Method used

By identifying the location and type of historical faults on the line, analyzing the changes in node parameters before the fault, generating fault status values, constructing a set of fault early warning thresholds, monitoring and comparing parameter changes in real time, dynamically updating the thresholds, and locating the fault location by combining the confidence level value.

Benefits of technology

It enables dynamic optimization of early warning thresholds based on historical data, improving the adaptability and accuracy of fault detection, accurately locating faults, and providing a basis for operation and maintenance decisions.

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Abstract

本发明公开了一种分布式线路故障检测方法,具体涉及线路故障检测技术领域,本发明通过识别线路历史各次故障的发生位置和故障类型,针对已识别的故障位置,提取故障发生位置所对应布设节点在故障发生前的影响参数作为分析对象,聚焦这些节点在故障发生前的参数变化,根据短路、绝缘老化、机械损伤三类故障的差异化特征,提取对应参数利用预先构建的分析逻辑进行处理,作为节点对应不同故障类型的故障状态值,更精准反映不同故障类型发生前的参数变化趋势,解决了现有技术多采用固定阈值的方法来触发故障预警,无法根据历史故障数据动态优化预警阈值的问题。
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