Aggregated rooftop PV sizing in distribution feeder considering harmonic distortion limit

摘要

With the global green initiatives, agencies dealing with the renewable energy are coming with lucrative schemes to promote consumers for opting solar photovoltaic (PV) source as an alternative source of energy. The aggregated impact of the growing number of dispersed rooftop PV source may originate many power system related problems, power quality problem being one of them. This paper presents the methodology to determine the maximum PV solar capacity that can be allocated in a distribution feeder keeping harmonic distortion within acceptable limit as per IEEE-519 standard. The proposed approach also gives additional aggregated PV solar size at any location for future PV penetration, provided the harmonic injection does not raise voltage distortion above specified limit. A case study is carried out on a distribution feeder consisting 5 distribution transformers (DTs) to validate the approach and results are published. Power system simulation tool MiPowerTM is used for network modeling and for verifying the result.