一种高压电力电缆状态实时智能监测系统

By acquiring signals across the entire monitoring segment and implementing dynamic early warning adjustments, the limitations of existing technologies in monitoring partial discharge in cables and the inadequacy of type identification have been resolved. This enables real-time, accurate monitoring and preventative maintenance of high-voltage power cables, improving the accuracy and reliability of cable condition assessment.

CN121955618BActive Publication Date: 2026-07-17ZHONGBANG CABLE GRP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGBANG CABLE GRP CO LTD
Filing Date
2026-03-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies only monitor partial discharge at cable joints, failing to achieve signal acquisition and interference elimination across the entire cable monitoring section. Furthermore, they do not perform type verification based on discharge location, resulting in limited monitoring range, insufficient accuracy in discharge type identification, inability to adapt to operating characteristics under different working conditions, lack of continuous assessment of cable insulation health status, and inability to achieve preventive maintenance.

Method used

The system employs a discharge signal acquisition module to collect signals across the entire monitoring section and eliminate electromagnetic interference. It also combines historical pulse propagation delay records of the cable to identify the location and type of discharge anomalies, dynamically adjusts early warning reference values, and assesses the insulation health status in conjunction with the cable's operating conditions, thereby achieving full-process monitoring and adaptive early warning.

Benefits of technology

It enables accurate acquisition and synchronous positioning of partial discharge signals across the entire cable monitoring section, improving the accuracy of discharge anomaly identification and the reliability of early warning. It can also capture the slow deterioration trend of cable insulation and reduce the probability of fault occurrence.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明涉及电力电缆监测技术领域,涉及到一种高压电力电缆状态实时智能监测系统。本发明通过电缆各监测段的原始局部放电信号,结合现场电磁环境干扰特征数得到局部放电信号,基于电缆实际传播速度,采用双端定位确定局部放电异常位置,结合局部放电信号中的特征参数,识别局部放电异常类型,实现局部放电异常位置的精准定位,提升放电异常类型识别的准确性;同时基于电缆运行工况调整局部放电特征预警参考值,将其与局部放电信号中的特征参数对比,当局部放电无异常时结合历史局部放电信号特征参数,对比评估电缆绝缘健康状态,从而捕捉电缆绝缘状态的缓慢劣化趋势,实现电缆预防性运维,降低电缆故障发生的概率。
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