Iromi Ranaweera

Iromi Ranaweera
University of Ruhuna · Department of Electrical and Information Engineering

Doctor of Philosophy

About

17
Publications
3,846
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389
Citations

Publications

Publications (17)
Experiment Findings
Full-text available
In this paper, it has introduced a new system that is capable of performing real-time continuous power quality (PQ) monitoring in the distribution grid, from a remote station. The main component of this system is a smart meter which is developed to acquire grid parameters to calculate PQ parameters such as current and voltage total harmonic distort...
Conference Paper
Full-text available
In this paper, it has introduced a new system that is capable of performing real-time continuous power quality (PQ) monitoring in the distribution grid, from a remote station. The main component of this system is a smart meter which is developed to acquire grid parameters to calculate PQ parameters such as current and voltage total harmonic distort...
Poster
Full-text available
PQ can be seriously a�ected in distribution grid due to the addition of REGs such as photovoltaic (PV) panels, wind power and EVCSs. Since the world is moving towards distribution generation continuous monitoring of PQ in distribution grids is required to maintain the quality of the service. Most of the countries are not yet using any mechanism to...
Article
This paper proposes a real-time energy management system (EMS) suitable for rooftop PV installations with battery storage. The EMS is connected to a smart grid where the price signals indirectly control the power output of the PV/battery system in response to the demand variation of the electricity networks. The objective of the EMS is to maximize...
Article
A distributed control method for residential battery energy storage (BES) units coupled with photovoltaic (PV) systems is presented. The objective is to utilize customer owned BES units for solving the over-voltage issues caused by high PV penetration without significantly affecting the BES owners local objectives. 24 h ahead active power set point...
Conference Paper
This paper presents a centralized voltage control scheme for unbalanced low-voltage grids experiencing over voltage problems due to high PV power penetration. Voltage control is primarily achieved by remotely controlling the active power of the distributed battery energy storage systems, which are owned by the customers. Reactive power capability o...
Article
Off-grid hybrid renewable-energy-based power systems for rural electrification have become an attractive solution for areas where grid electricity is not feasible. Hybrid energy systems use several energy technologies, and the selection of proper technologies with optimum sizing of the selected components has become very important. The objective of...
Chapter
Off-grid hybrid renewable energy based power system for rural electrification has become an attractive solution for areas where grid electricity is not feasible. Depending on the availability of the resources, single energy source or a combination of several sources, including an energy storage system is used in an off-grid hybrid energy system. As...
Conference Paper
Full-text available
This paper presents the design of a control system for a grid connected residential photovoltaic (PV) system with battery energy storage (BES). The control methods for the power electronic converters are presented and the potential of utilizing BES for participating in primary frequency regulation of the grid is investigated. The charging/ discharg...
Article
Full-text available
Off grid hybrid renewable energy based power systems for rural electrification has become an attractive solution for areas where grid electricity is not feasible. Hybrid systems use several generation technologies, therefore the selection of proper technologies and optimum sizing of the components has become of great importance in reducing the over...
Conference Paper
Full-text available
The temporal variability of solar irradiance at small time scales ranging from 1 second to 2 minutes was studied to characterize the short term fluctuations in irradiance at high latitudes. The change in irradiance at time scales of 1, 5, 10, 30, 60 and 120 seconds were calculated from irradiance data measured at a test station in Grimstad, Norway,...
Conference Paper
Full-text available
Using off grid hybrid renewable energy systems for rural electrification has become an attractive solution for those areas, where grid electricity is not feasible or cost of the grid extension is relatively large. Hybrid system combines several energy systems together, therefore it can supply high reliable electricity rather than a PV/battery syste...

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Projects

Projects (2)
Archived project
Rather than using the utility grid as the energy storage we use here a separate energy storage to store the excess electricity produce by the PV system during the daytime. That will minimize the electricity purchasing from the utility grid during the peak time. Here our aim is to optimally size the energy storage .