Open AccessLoad frequency control assessment of tidal power plant and capacitive energy storage systems supported microgrid
Author(s) -
Kumar Akshay,
Shankar Gauri
Publication year - 2020
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2019.1249
Subject(s) - voltage droop , automatic frequency control , inertia , frequency deviation , microgrid , electric power system , energy storage , control theory (sociology) , frequency regulation , engineering , computer science , power (physics) , control (management) , electrical engineering , renewable energy , physics , quantum mechanics , artificial intelligence , classical mechanics , voltage , voltage divider
Tidal power plant (TPP) is an emerging and fast‐growing addition to clean energy technologies. Potentially, it may bridge the gap of energy scarcity and lower environmental impacts. Therefore, a meticulous study on it in providing support to various ancillary services, especially, in load frequency control (LFC), need to be carried out. Penetration of the intermittent unit like TPPs into the power system causes capacity addition but at the cost of a decrease in inertia and primary frequency response owing to the power electronic interface. Due to this, following disturbance, both the maximum frequency nadir and the rate of change of frequency deviation deteriorate, which poses a threat to LFC service. So, in this study, the contribution of the deloaded TPPs, with different level of penetration, in frequency regulation employing control strategies such as inertia control and droop control is analysed. Performance of these control strategies has been successfully demonstrated through a series of simulation‐based experiments. Further, the impact of virtual inertia contribution from capacitive energy storage systems (CESSs), in case of insufficient inertia support from TPPs on LFC performance of the system is investigated. Lastly, the impact of a combined response of inertia and droop control strategies with CESSs on frequency nadir is also explored.