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Open Access 2025 | Open Access | Buch

Control and Protection of 100% Inverter-based Power Systems

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SUCHEN

Über dieses Buch

In diesem Open-Access-Buch werden Spannungsquellenwandler (VSCs) als Schlüsselkomponenten nachhaltiger Energiesysteme auf Basis von Windkraftanlagen, Photovoltaikanlagen, Batteriesystemen, Elektrofahrzeugen und Wärmepumpen untersucht. In Zukunft werden 100% wechselrichterbasierte Energiesysteme (IBPS) entstehen. Schutzsysteme gegen Netzstörungen sind ein wesentlicher Bestandteil der elektrischen Netze. Sie verhindern Gefahren für Lebewesen und Schäden an technischen Anlagen durch Netzstörungen. Die Regelalgorithmen von VSCs und Schutzalgorithmen müssen in zukünftigen Netzen zusammenarbeiten. Andernfalls ist die Zuverlässigkeit der Energieversorgung in Gefahr. Heutzutage werden Kontrolle und Schutz oft unabhängig voneinander betrachtet. In diesem Buch werden sie gegenseitig untersucht. Die Widerstandsfähigkeit des Systems gegen Netzstörungen wird durch den Einsatz von Flexibilitätsoptionen der VSCs erhöht. Es wird ein universeller Schutzalgorithmus entwickelt, der diese Flexibilitätsoptionen nicht einschränkt. In diesem Buch werden Post-Fault-Charakteristika von VSCs, Neutralpunktbehandlung und resonante Erdung über VSCs und ein modellbasierter Schutzalgorithmus vorgestellt. Die nachhaltige und zuverlässige Energieversorgung ist ein wesentlicher Eckpfeiler menschlicher Gesellschaften. Dieses Buch zeigt einen ganzheitlichen Ansatz für die Kontrolle und den Schutz von 100% IBPS auf, der auf diesem Weg beiträgt.

Inhaltsverzeichnis

Frontmatter

Open Access

Chapter 1. Introduction
Abstract
This chapter opens the thesis. In Sect. 1.1, the background and the motivation of this thesis regarding energy systems in transition and the role of power electronics as the key technology is presented. Grid architectures for the integration of renewable energy sources (RES) and future grid operation strategies are explained.
Florian Mahr

Open Access

Chapter 2. Electrical Energy Supply in 100% IBPS
Abstract
This chapter presents the electrical energy supply in 100% inverter-based power systems (IBPS). In Sect. 2.1, the physical and technical fundamentals of voltage source converters (VSCs) are presented. The frequency characteristics of 100% IBPS are described in Sect. 2.2. It contains the remastered interpretation of frequency in 100% IBPS and the requirements on the frequency characteristics of VSCs.
Florian Mahr

Open Access

Chapter 3. Electrical quantities, state-space modelling and system properties
Abstract
This chapter presents the mathematical description of electrical quantities, the state-space modelling of electrical systems and the analysis of system properties. After a fundamental classification of types of description of electrical quantities, phasors and space vectors are presented in Sect. 3.1. Furthermore, a general representation of a three-phase four-wire system is given.
Florian Mahr

Open Access

Chapter 4. Synchronization of VSCs to the Grid
Abstract
This chapter presents the synchronization of voltage source converters (VSCs) to the grid. In Sec. 4.1, the connection of a VSC to the grid based on the grid equivalent circuit and the energy transfer is explained. Sec. 4.2. gives an overview of different synchronization principles. Basic and advanced voltage-based synchronization concepts are shown and evaluated in Sec. 4.3.
Florian Mahr

Open Access

Chapter 5. Grid-side Characteristics and V/I-Control of VSCs
Abstract
This chapter presents the grid-side characteristics and the voltage/current (V/I) control of voltage source converters (VSCs). In Sec. 5.1, the hierarchical control structure of VSCs and the functional chain to realize desired grid-side characteristics are explained. After discussing possible options of grid-side characteristics in a generalized symmetrical components equivalent circuit, the calculation of reference variables is presented in Sec. 5.2.
Florian Mahr

Open Access

Chapter 6. Enhanced Grid Fault Characteristics of VSCs
Abstract
This chapter presents the enhanced grid fault characteristics of voltage source converters (VSCs). In Sect. 6.1, the resilience of \(100\%\) inverter-based power systems is discussed. The resilience is subdivided into the resilience of the grid operation and the resilience of the VSC. The resilience of the grid operation is discussed in Sect. 6.2. It contains the presentation of the necessary hardware and software configuration of direct-connected VSCs. Different control modes of these VSCs are discussed.
Florian Mahr

Open Access

Chapter 7. Grid Fault Modelling
Abstract
This chapter presents the grid fault modelling as the basic prerequisite of the model-based protection algorithm. In Sec. 7.1, the model-based fault analysis is defined. The basic concept of the model-based protection algorithm is introduced and compared to existing protection schemes.
Florian Mahr

Open Access

Chapter 8. Model-Based Protection Algorithm
Abstract
This chapter presents the model-based protection (MBP) algorithm. In Sect. 8.1, the fundamentals of the model-based fault analysis based on estimated values are explained. The principles of the state observer and the Kalman filter as state estimators are described in Sect. 8.2.
Florian Mahr

Open Access

Chapter 9. Validation of the MBP by Laboratory Tests
Abstract
This chapter presents the validation of the model-based protection (MBP) algorithm by laboratory tests. The laboratory environment and the workflow is explained in Sect. 9.1. Four different laboratory single-phase-to-ground fault scenarios are presented in this thesis.
Florian Mahr

Open Access

Chapter 10. Model-based Protection Scenarios in 100% IBPS
Abstract
This chapter presents the investigation of the model-based protection (MBP) algorithm in \(100\%\) inverter-based power systems (IBPS). The main focus of this chapter is the evaluation of different grid fault types and enhanced grid fault characteristics of voltage source converters (VSCs). In Sect. 10.1, the VSC-specific grid fault characteristics and the four selected simulation scenarios are described.
Florian Mahr

Open Access

Chapter 11. Conclusion and Research Perspectives
Abstract
In this thesis, a holistic control and protection concept for \(100\%\) inverter-based power systems (IBPS) based on voltage source converters (VSCs) is presented. A perspective of sustainable energy systems based on renewable energy sources (RES) is pointed out.
Florian Mahr
Backmatter
Metadaten
Titel
Control and Protection of 100% Inverter-based Power Systems
verfasst von
Florian Mahr
Copyright-Jahr
2025
Electronic ISBN
978-3-658-47217-7
Print ISBN
978-3-658-47216-0
DOI
https://doi.org/10.1007/978-3-658-47217-7