电力电缆资产的状态评估与运维决策综述  

Review of Condition Assessment and Maintenance Strategy of Power Cable Assets

作　　者：周承科[1,4] 李明贞[1] 王航[1] 周文俊[1] 鲍玉川[2] 唐泽洋[3] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]国网湖北省电力公司武汉供电公司,武汉430013 [3]国网湖北省电力公司电力科学研究院,武汉430077 [4]英国格拉斯哥加里多尼亚大学,格拉斯哥G40BA

出　　处：《高电压技术》2016年第8期2353-2362,共10页High Voltage Engineering

摘　　要：随着中国城市化建设和城市电网的迅速发展,电力电缆资产规模迅速扩大,提高电缆资产的管理水平是电网企业提升服务质量、履行社会责任、增大国有资产收益的重要环节。近年来,国内外科研人员在电力电缆的绝缘材料、老化机理、状态监测、资产管理等领域开展了大量的研究。为此,首先针对电力电缆的运维管理,根据ISO 55000资产管理国际标准的要求,提出了开展电缆运维精益化管理的过程和步骤,这包括资产登记、状态监测、状态评估、风险分析和运维策略制定。然后总结了近年来在电缆状态监测、状态评估和故障数据分析等方面的研究进展,这包括应用新的状态监测技术、故障定位方法、统计学工具来处理电缆故障数据并预测未来可能发生的故障数目,应用热电老化模型来分析电缆绝缘剩余寿命等方面的研究进展。最后介绍了结合状态评估和资产重要性即基于风险分析的退役管理措施。基于该退役决策结果,电缆运维人员根据每条电缆线路目前的状态及其在电力系统中的重要性即可判断出风险等级高、需要更换的电缆线路,不仅可以确定每年度退役的数量,而且可以确定退役的对象。With the development of urbanization in China, the amount of cable assets in the power network in China is fast growing, key to improving the service quality, to fulfilling the social responsibility and enhancing the investment return of the power grid is to improve the maintenance and management practice of the increasingly important cable assets. A significant amount of work has been recently published in the area of cable insulation materials, aging mechanisms, condition monitoring and diagnostics, and cable asset management. The present paper reviews and assesses the above re- search work. Based on ISO 55000 requirement, it proposes a flowchart and the procedure required to implement cable life cycle management. Then the paper reviews the current state-of-the-art in condition monitoring, condition assessment, aging modelling and the use of statistical tools for analysis of cable failure data. Finally it shows a risk based strategy of managing cable replacement. Based on the results of the retire decision, cable operation and maintenance staff can distin- guish high risking and replacement needing cables. They could not only determine the annual number of retired cables, but also the cables to be retired.

关 键 词：电力电缆 资产管理 状态评估 绝缘老化 退役管理 运维决策 

分 类 号：F426.61[经济管理—产业经济] TM75[电气工程—电力系统及自动化]