Open AccessSimplified distribution grid model for power quality studies in the presence of photovoltaic generators
Author(s) -
Patsalides Minas,
Efthymiou Venizelos,
Stavrou Andreas,
Georghiou George Elia
Publication year - 2015
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
ISSN - 1752-1424
DOI - 10.1049/iet-rpg.2014.0231
Subject(s) - photovoltaic system , grid , renewable energy , computer science , distributed generation , grid connected photovoltaic power system , power quality , reliability engineering , voltage , distribution grid , sensitivity (control systems) , automotive engineering , electronic engineering , electrical engineering , maximum power point tracking , engineering , mathematics , geometry , inverter
Renewable energy sources are expected to have a considerable share in the global energy mix over the next years and consequently further research is required to enhance the planning strategies, modify prudently the existing standards and set quality levels on delivered power in order to accommodate the penetration of these technologies. Depending on the distribution grid dynamics and the load demand, the amplitude of voltage may vary significantly, and therefore proper simulation models are required for performing dedicated studies. In this study, a simplified and accurate model representing the distribution grid dynamics is introduced for power quality studies in the presence of distributed photovoltaic (PV) generators. The proposed simplified distribution grid model (SDGM) is validated using measurements and it is then used along with a verified PV system model to estimate the voltage variation and PV capacity of the distribution grid under investigation. Moreover, a sensitivity analysis is performed by varying the parameters of the SDGM to assess how the PV capacity is altered. As a last step, common voltage regulation schemes are analysed through the use of the proposed model, validating operational modes that can accommodate high distributed PV capacities.