Abstract
Technologies of microgrids (MGs) help power grid evolve into one that is more efficient, less polluting, reduced losses, and more flexible to provide energy consumers’ want and need. Because of the nature of various renewable energy sources (RESs) integrated into the MGs such as variability and inability to accurately predict and control, different technical problems are created. Power quality is one of the most important issues to be addressed, especially harmonic distortion and voltage stabilization. Many devices have been proposed to improve these two aspects that may result from loads nonlinearity and sources uncertainty. In this study, an adaptive switched filter compensator (ASFC) with developed proportional-integral-derivative (PID) controller is proposed to improve the overall dynamic performance of the MGs. The PID’s controller gains are optimally tuned via the application of grasshopper’s optimization algorithm (GOA) to act adaptively with self-tuning as the operating conditions may subject to change during MG operation. Different case studies are proposed to reveal the robustness of the presented ASFC on harmonic mitigation, dynamic voltage stabilization, reactive power compensation and power factor improvement considering the features of RESs such as variations of wind speed, solar PV irradiation and temporary fault conditions. A distribution synchronous static compensator (D-STATCOM), as one of the most popular D-FACTS, with optimal tuned PID controller by using the GOA is also proposed. To validate both the proposed ASFC topology and the modified D-STATCOM, comparative studies including what has been published in literature are examined by using MATLAB/Simulink platform. The results advocate the effectiveness, robustness and latency of the proposed devices.
Highlights
Integration of distributed energy resources (DERs), renewables and non-renewables, forming what is called ‘microgrids (MGs)’ has been widely deployed to benefit both utilities and consumers
COMPARISON BETWEEN THE MODIFIED AND TRADITIONAL D-STATCOM A comparison between the traditional and modified D-STATCOM that is tuned by the grasshopper’s optimization algorithm (GOA) for harmonic mitigation and reactive power compensation at the point of common coupling (PCC) is described
Different case studies are performed to validate the effectiveness of the proposed adaptive switched filter compensator (ASFC)
Summary
Integration of distributed energy resources (DERs), renewables and non-renewables, forming what is called ‘microgrids (MGs)’ has been widely deployed to benefit both utilities and consumers. It is based on the local measurements of the parameters necessary for managing and controlling the MG, (ii) secondary control that is responsible for MG operation according to the mode of operation used, and (iii) tertiary control, which is the highest level of control It coordinates multiple MGs interacting with one another in the system and communicates requirements from the utility grid [1]. One of them is the multi-function device that is named as ‘switched filter-compensator (SFC)’ It can be exploited for mitigating harmonics distortion and voltage stabilization as well. SFC topology for wind energy in a grid-connected system is studied in [10] to prove its capability of harmonics reduction at different conditions (load variation and fault conditions) and compensating the reactive power to satisfy the dynamic voltage stability.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
