Large scale PQ, temperature and energy monitoring in secondary substations.
Working Group Number
3-6 June 2019
ROMERO GORDON, JOSE MARIA, ENDESA, Spain
This paper deals with an ongoing project for monitoring distribution transformers and their associated low voltage network. The main goal is not only to deliver a set of statistics and figures for assessing power quality, but using it for improving network operation and maintenance.Instead of relying on complex data-management systems for gathering and analyzing the information throughput, a simpler and low-cost edge-computing approach has been designed and built into the PQ-device firmware.One of the most challenging issues has been the estimation and coding of the hot-spot temperatures based on existing IEC standards.Moreover, the system is open for future enhancements without incurring in massive and costly changes in central data-management systems.
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