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PPT | 配电电缆状态感知及健康评估技术

  • 2026-04-04 23:39:36
PPT | 配电电缆状态感知及健康评估技术

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核心速览

本文围绕配电电缆状态感知及健康评估技术展开，分析了配电电缆运行中面临的问题，介绍了在线监测技术和健康寿命评估技术，并阐述了预期效果。

配电电缆运行中面临问题

全寿命周期管理

：以PMS2.0为电缆基础数据来源，建立配电电缆全寿命周期管理台账，实现现场实物与台账一一对应，同时建立迁改和维修记录工程管理机制，确保现场与台账保持动态一致。

故障定位与寿命评估

：综合监测与精确定位装置利用双端行波定位原理，实现故障的快速查找和精确定位；综合考虑多因素影响，结合实时监测数据，利用分层分析法实现寿命评估，并给出判断可靠性的可信度指数。

配电电缆在线监测技术

电缆接头全景监测

：配电电缆全景监测及缺陷预警系统由数据采集器、传感器集群（包括局放温度二合一传感器、水位监测传感器、有害气体监测传感器、微图像监测传感器、电缆井盖异位监测传感器）及监控主站构成，用于监测电缆运行状态的各种参数。

电缆综合在线监测与精确定位

：配网电缆综合在线监测与精确定位装置集电缆终端头监测、电缆线路状态监测、线路故障定位三大功能于一体，包含电缆谐波损耗电流在线监测系统和直流泄露电流在线监测系统，监测终端有集中型和单回路型。

电缆状态在线检测试验平台

：搭建典型的10千伏混网线路，设置10千伏电缆接头典型安装缺陷和环网柜典型局放缺陷，在实时挂网运行状态下为配网带电检测和在线检测相关工作与研究提供支持。通过制作缺陷电缆接头并有效放电，依次实现有效局放、有效局放至运行击穿、试验击穿；对现有接头进行试验加压直至发生局部放电；新做有极严重缺陷的接头，实现非试验加压情况下产生有效局放或运行击穿。

配电电缆健康寿命评估技术

评估系统目标

：建立电缆的全寿命评价系统，客观、有效地评价运行中中压电缆寿命，预测值为一个寿命范围，以便合理安排电缆维护及更换，优化电缆设备资产管理、提高电网运行安全性。

评估步骤

：包括大数据收集与整理（收集整理电缆所有实际及试验数据）、相关性分析（根据相关性确定试验项目）、确定试验项目评分标准（四类性能测试实验）、构建运维信息评分表（四个运维信息项目）、构建在线监测信息评分表（直流泄露电流法和谐波损耗电流法）、分层分析法计算权重（将标度由整数拓展为有理数，并计算各项目权重）、确定总分及累计权重因子（根据试验项目和运维信息确定评估总分，累计权重因子由分层分析法计算结果决定）、确定剩余寿命并确定运维措施（对各项内容进行评分）。

预期效果

电缆接头运行状态全景监测

：在展示页面可查看每一个电缆井的运行情况，帮助运维人员全方位多维度地了解电缆井的运行情况。

电缆运行寿命评估有序化管理

：对已有在运电缆运行寿命进行全方位评估，为运维人员提供合理的运维工作计划，尤其对运行年龄超过30年以上的电缆给出退役计划，在保证供电安全的前提下，最大限度地提升电缆资产利用功效。

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  1. CONNECT:[ UseTime:0.000680s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000805s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000335s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000285s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000500s ]
  6. SELECT * FROM `set` [ RunTime:0.000201s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000597s ]
  8. SELECT * FROM `article` WHERE `id` = 495915 LIMIT 1 [ RunTime:0.000413s ]
  9. UPDATE `article` SET `lasttime` = 1775329702 WHERE `id` = 495915 [ RunTime:0.001081s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000224s ]
  11. SELECT * FROM `article` WHERE `id` < 495915 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000598s ]
  12. SELECT * FROM `article` WHERE `id` > 495915 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000413s ]
  13. SELECT * FROM `article` WHERE `id` < 495915 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000637s ]
  14. SELECT * FROM `article` WHERE `id` < 495915 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002473s ]
  15. SELECT * FROM `article` WHERE `id` < 495915 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000723s ]
0.077447s