ABSTRACT
The objectives for monitoring of stand aione PV systems move away from system and component evaluation towards a quality control of service provided to the system user, and the detection of correct interaction of the user with the system. In this article, a novel monitoring concept is developed by analysing data from the existing monitoring scheme. The user opinion concerning the global evaluation of the system is strongly correlated with the satisfaction of the energy needs. Users with energy needs not satisfied show a trend of not allowing the batteris to be fully charged. Users with adequate load management succeed to drawing more energy from their system without vitiating the batteries. For the novel monitoring scheme, it is proposed to monitor the quality control of service by metering the energy provided to the user, and the time of low battery state of charge, which is found to be a critical parameter for the detection of system failures. The correct interaction can be assessed by the historical battery index, which indicates the level of load management performed by the user.
