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Inverter Control Strategies for a Grid Stabilizing Power-to-Gas System 전력가스화 (P2G) 시스템에서 계통 안정화를 위한 인버터 제어기법by Gedeon Rusatira
A Ph.D. Dissertation Submitted to the Department of Energy and Electrical Engineering and the Graduate School of Tech University of Korea in partial fulfillment of the requirements for the Philosophy Degree in Engineering June 2024
Abstract
Inverter Control Strategies for a Grid Stabilizing Power-to-Gas System 전력가스화 (P2G) 시스템에서 계통 안정화를 위한 인버터 제어기법
The integration of Power-to-Gas (P2G) systems into modern power grids represents a pivotal advancement towards achieving a more sustainable and resilient energy infrastructure. However, this integration introduces both challenges and opportunities, particularly concerning grid stability and the effective incorporation of renewable energy sources. This thesis delves into the intricate dynamics of P2G system integration, with a specific focus on the role of inverter control strategies in ensuring grid stability and facilitating the seamless integration of renewable energy sources. Through an extensive review of existing literature and rigorous analysis, various control strategies tailored for P2G applications are explored, emphasizing their efficacy in addressing grid stability concerns. Key aspects examined include voltage and frequency regulation, active and reactive power control, ancillary services provision, and energy storage management. These factors are crucial for maintaining grid stability amidst the variability inherent in renewable energy generation and the intermittent nature of P2G systems. Additionally, the development and implementation of advanced control algorithms are discussed. These algorithms are designed to account for grid dynamics, renewable energy variability, and compliance with grid codes and regulations. A particular focus is placed on enhancing grid-forming capabilities within inverters, enabling autonomous operation even in weak grid conditions, thereby bolstering grid resilience. Practical case studies and simulations form an integral part of this research, allowing for the assessment of various control strategies’ performance under diverse grid scenarios. Insights gained from these analyses contribute to a deeper understanding of inverter control strategies and address regulatory and technical considerations associated with grid support functions. Ultimately, this thesis aims to serve as a valuable resource for policymakers, grid operators, and industry stakeholders, providing guidance on the implementation of effective control strategies for P2G applications. Novel distributed control systems specifically designed for P2G inverter applications are proposed, with the overarching goal of improving stability, efficiency, and dependability within the energy grid. By advancing our understanding of inverter control strategies and their role in P2G integration, this research contributes to the ongoing transition towards sustainable energy systems. This fosters a robust and environmentally friendly energy landscape, paving the way for a more resilient and equitable energy future.
keywords: Distributed control strategies, Grid stability, Inverter control, Power-to-Gas (P2G), Renewable energy integration
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