Photovoltaic-grid connection in the UAE: Technical perspective

摘要

Connection of utility-interactive PV generators at the distribution level, namely PV distributed generation (PVDG), could bring many benefits to the distribution network. However, deployment of PVDG systems, in any country, requires actual data on the performance of these systems under actual weather conditions. Additionally, it needs compliance with the electrical structure and regulations of the power distribution network in that country. Hence, applying PVDG technology in the UAE brings forth many considerations and this work aims at tackling potential technical ones. Among these is the role of daily load curve and PV production curve in determining feasible locations and capacities of PVDG systems. The analyses are based on existing case study feeders at the 11 kV level of Abu Dhabi distribution network. Accordingly, the work results in suitable recommendations on feasible locations of PVDG systems. Also it defines rational objectives and constraints for optimal sizing and location of such systems. The other consideration tackled in this work is the performance of PVDG systems in actual UAE weather conditions. Actual data from two pilot PVDG systems installed in Abu Dhabi are collected and analyzed. The production of PV array, consistency of voltage and frequency and the conversion efficiency of PV modules and inverters along with the impact of ambient temperature are considered. In the same connection, the influence of accumulated dust deposition on the production of PV array in UAE is also taken over in this work.