Analyzing Parameters That Affect the Reliability of Low-Voltage Cable Grids and Their Applicability in Asset Management

Abstract

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Advanced replacement strategies for low voltage distribution grids

“…One of the requirements for CBM is the availability of an approach towards condition assessment. Currently, options exist via data analysis [3] and measurement devices [4]. Where data analysis is not accurate enough, measurement devices are expensive or not yet available on a large scale.…”

“…As was found in ref. [3], the probability of recurring interruptions increases with every interruption in either main cable, service cable or joint. Therefore in this study, the complete main cable including service cables and joints is replaced.…”

“…As mentioned in refs. [3,9] solving all interruptions involves substantial costs. The costs of solving a typical LV interruption are €1300-1800.…”

“…In ref. [3] a method is described to analyse which parameters affect the reliability of LV grids. It was found that some parameters increase the probability of failure.…”

“…IET Generation, Transmission & Distribution published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology make a ranking of LV assets based on relative failure probability. However, it is still not possible to determine the remaining lifetime of these assets accurately [3]. Also, LV grids cannot (yet) be monitored on a large scale in a cost-effective way [4].…”