A survey of URD cable installed on rural electric systems and failures of that cable

34th Annual Conference on Rural Electric Power Pub Date : 1990-04-29 DOI:10.1109/REPCON.1990.68532

J.C. Dedman, H. L. Bowles

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引用次数: 6

Abstract

Several surveys have been conducted with the purpose of determining the history of failure of underground power cables. Typically, these surveys are used to compare data related to cables of various types or installation conditions. The Rural Electrification Administration (REA) has determined that most of the studies have not supplied valid or meaningful information, because neither the vintage of the cables nor their age at failure was considered. In 1988 and 1989, REA conducted a survey which supplied results which are both valid and meaningful. Analysis of the data reported by over 100 rural electrical cooperatives revealed trends related to several variables, such as insulation material and thickness, jacketing, conductor type, and installation methods. The cumulative total of failures, to date, of the cable installed in each year since 1970 was calculated and broken down according to the same variables. The results of the survey are discussed, and recommendations concerning ways that electric utilities can effectively use the results in considering replacement of aged cables are presented.<>

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对安装在农村电力系统上的URD电缆和该电缆故障的调查

为了确定地下电力电缆的故障历史，已经进行了几次调查。通常，这些调查用于比较与各种类型的电缆或安装条件相关的数据。农村电气化管理局(REA)已经确定，大多数研究都没有提供有效或有意义的信息，因为既没有考虑电缆的年代，也没有考虑电缆失效的年龄。在1988年和1989年，REA进行了一项调查，提供了有效和有意义的结果。对100多个农村电力合作社报告的数据的分析揭示了与若干变量有关的趋势，如绝缘材料和厚度、护套、导体类型和安装方法。根据相同的变量计算和分解了自1970年以来每年安装的电缆的累计故障总数。讨论了调查结果，并就电力公司在考虑更换老化电缆时有效利用调查结果的方法提出了建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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34th Annual Conference on Rural Electric Power

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