Abstract:
Trends on utilizing distributed renewable
resources around the world have significantly increased the
number of grid connected solar photovoltaic systems in low
voltage networks. In Sri Lanka, low voltage systems are now
available with the cumulative addition of the installed rooftop
solar capacities is exceeding fifty percent of the rated capacity
of the connected transformer. Thus, it is of vital importance to
understand the technical impacts of solar photovoltaic additions
in large scales on the operating performance of the networks
and how to mitigate those issues.
In this study, a futuristic solution is proposed with the
formation of smart grid type operation, to effectively utilize the
daytime solar photovoltaic generation in low voltage systems
within the distribution transformer service area. Distribution
transformer based smart grid, which operates with controlling
mechanisms, loads, rooftop solar and battery storage systems is
proposed for an urban low voltage distribution network in Sri
Lanka which have more than forty percent of solar penetration
level based on transformer capacity. The detailed network was
modeled in MATLAB/SIMULINK simulation platform in order
to develop different operating scenarios. The base model was
validated with the field data available with transformer meter.
Citation:
Amarasinghe, H.P.P., Jayatunga, U., & De Silva, N. (2018). Distribution transformer based smart grids with rooftop solar: a case study for Sri Lanka. In R. Samarasinghe & S. Abeygunawardana (Eds.), Proceedings of 2nd International Conference on Electrical Engineering 2018 (pp. 111-117). Institute of Electrical and Electronics Engineers, Inc. https://ieeexplore.ieee.org/xpl/conhome/8528200/proceeding