High-Level Penetration of Renewable Energy Sources Into Grid Utility: Challenges and Solutions
Several challenges in the integration process of high-level RESs to the existing grid are summarized and the respective solutions to each challenge are presented and discussed.
Abstract
The utilization of renewable energy sources (RESs) has become significant\nthroughout the world especially over the last two decades. Although high-level\nRESs penetration reduces negative environmental impact compared to conventional\nfossil fuel based energy generation, control issues become more complex as well\nas total inertia to the system is significantly decreased due to removal of\nconventional synchronous generators. Some other technical issues, high\nuncertainties, low fault ride through capability, high fault current, low\ngeneration reserve, and low power quality, arise due to RESs integration.\nRenewable energy like solar and wind are highly uncertain due to intermittent\nnature of wind and sunlight. Cutting edge technologies including different\ncontrol strategies, optimization techniques, energy storage devices, and fault\ncurrent limiters are employed to handle those issues. This paper summarizes\nseveral challenges in the integration process of high-level RESs to the\nexisting grid. The respective solutions to each challenge are also discussed. A\ncomprehensive list of challenges and opportunities, for both wind and solar\nenergy integration cases, are well documented. Also, the future recommendations\nare provided to solve the several problems of renewable integration which could\nbe key research areas for the industry personnel and researchers.\n