Dynamic Reactive Power Compensation and Harmonic Suppression of Optical Storage Microgrid Control in Natural Coordinates

• Published in: Journal of physics. Conference series Vol. 1187; no. 2; pp. 22061 - 22067
• Main Authors: Jia, Guangyao, Wang, Shudong, Song, Huiying, Mao, Yanrong, Luai, Almadhehagi
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.04.2019
• Subjects: Active control; Compensation; Control methods; Control stability; Control systems; Converters; Coordinate transformations; Data buses; Distributed generation; Dynamic response; Inverters; Load fluctuation; Power control; Reactive power; Voltage stability
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1187/2/022061

In order to solve the influence of load fluctuation on the power quality of the grid when the distributed photovoltaic power generation system is connected to the grid side, and to reduce the complexity of the control system, this paper proposes the grid-connected control of the microgrid with reactive power compensation and harmonic suppression in natural coordinates. This strategy maintains the DC bus voltage stability in a battery capacity state switching converter control method. Two kinds of grid-connected inverter power control strategies with reactive power compensation are designed for different working conditions, which realizes independent control of active and reactive power of grid-connected inverters, eliminating coordinate transformation and grid phase detection. The experimental results show that the proposed control strategy can achieve the smooth and efficient flow of the optical storage microgrid system, achieve the purpose of reactive power compensation, and has a good dynamic response.