Flexible power‐point‐tracking‐based frequency regulation strategy for PV system. Issue 10 (9th June 2020)

• Record Type: Journal Article
• Authors: Zhong, Cheng; Zhou, Yang; Zhang, Xiao‐Ping; Yan, Gangui
• Is Part Of: IET renewable power generation. Volume 14:Issue 10(2020)
• Page Start: 1797
• Page End: 1807
• Publication Date: 2020-06-09
• Subjects: frequency control -- power grids -- maximum power point trackers -- power system stability -- tracking -- photovoltaic power systems -- wind power plants -- power generation control; flexible power‐point‐tracking‐based frequency regulation strategy -- PV system -- power reserve control method -- irradiance information -- complex model estimation -- maximum power curve -- suboptimal power point -- adaptive step‐size tracking method -- output power fluctuation -- given power reserve ratio -- reserve ratio variation conditions -- frequency response -- power systems; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2020.0013
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : This study proposes a novel frequency regulation strategy based on a power reserve control method. Unlike existing strategies, irradiance information and complex model estimation are not required, except for the maximum power curve. The suboptimal power point at any irradiance and reserve ratio can be automatically converged with the proposed tracking method. Furthermore, an adaptive step‐size tracking method is proposed to improve the output power fluctuation around the suboptimal power point. The simulation results with several scenarios are used to verify that the proposed strategy can quickly and robustly track a given power reserve ratio under the irradiance and reserve ratio variation conditions. The proposed strategy can significantly improve the frequency response of power systems with photovoltaic (PV) generation.