Power quality monitoring use case in real low voltage network

There are many factors, such as distributed energy production and increased power quality requirements, why the importance of LV network is increasing rapidly in the distribution network. Therefore more intelligent solutions are required. These solutions can be utilized to improve LV network management such as power quality and load flow management. At the LV network level, power quality has not traditionally been monitored at all. The knowledge about power quality is based on the measurements at HV and MV level and the case specific measurements due to customer complaints. The paper discusses the extension of the power quality monitoring of some quantities to the LV level by utilizing the concept proposed by the FP7 European project INTEGRIS. The paper also presents results about how the power quality algorithm, developed by the Tampere University of Technology, was acting in long term measurements in the real LV network.