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Résumé

Locating faults in LV networks represents a substantial share of the total interruption time, that could be reduced as an additional benefit of smart meter deployment. This contribution presents a technique to locate faults by combining smart metering alarm and PLC communication data (path requests). The algorithm allows to identify the location by sending path requests to those smart meters which are most distant (within the PLC network) to the transformer. Based on received replies, potentially interrupted customer connections are identified until the fault location can be determined based on the knowledge of all affected customers. The proposed approach has been validated by simulation and in a simple experimental setup located in a real distribution grid. The use of this approach reduces the time needed in order to locate the fault compared to on-site search, but also compared to polling techniques using PLC communication. In combination with the possible reduction of the total customer interruption time, planning for a deployment of this solution has recently started.

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