Impact of Grid-Connected Renewable Energy Sources on Power Quality (GR-10-06)
Principal Investigator: Dr. Yong-June Shin
The contribution of distributed generation to renewable energy sources has been significantly increasing for the past decade. Due to the uncertain nature of renewable energy sources, improper integration or coordination of these sources could be a threat to the power quality of the existing electric power grid. In particular, harmonic distortion will be a significant concern in large offshore wind farms, where the extensive cable system may cause unexpected harmonic resonances of voltage and current.
This project investigated the system-wide power quality management problem of grid-connected renewable energy sources. Among the variety of types of renewable energy sources, this project focused specifically on resolving power quality problems of the grid-connected wind turbine generators (WTGs), which could then be extended to other types of renewable energy sources. This research project included a survey of the existing and/or planned deployment of smart-grid demonstration sites with renewable resources; modeling of renewable energy sources with power electronics for energy conversion, energy storage devices, and harmonic filters; and simulation of grid-connected renewable energy sources.