Oscillatory Stability of Converter-Dominated Power Systems

verfasst von: Xiaorong Xie, Jan Shair

Verlag: Springer Nature Switzerland

Buchreihe : Power Systems

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

Inhaltsverzeichnis

Über dieses Buch

This book provides modeling, analysis, and control methods for wideband oscillations caused by control interactions in converter-dominated power systems. The modern power system comprises power electronic devices in various forms, including wind turbines, photovoltaics, flexible AC/DC transmission systems, battery energy storage systems, and distributed generations, among others. Unstable oscillation modes can cause equipment damage, sudden power reduction, noise in power transformers, and degradation of power quality. Wideband oscillation seriously threatens the stable and reliable operation of wind power systems.

The interaction mechanism becomes more complex due to system-wide factors such as network topology, grid strength, input resource intermittency, converter control parameters, and the output levels of renewable generators. This complexity presents a significant challenge in studying the intricate control interaction phenomena and deriving appropriate countermeasures.

The book is beneficial for industry professionals, engineers, and academic researchers working on power systems in general, and specifically on power electronic converters.

Inhaltsverzeichnis

Frontmatter

Terms, Definitions, and Classifications of Power System Oscillatory Stability

Frontmatter

Chapter 1. Introduction to Power System Oscillatory Stability

Abstract

This chapter first presents a summary of six real-world wideband oscillation events and the resulting consequences. The chapter highlights the pressing need for fully understanding the wideband control interactions as well as addressing the outstanding challenges to accurately model and analyze the system and deploy effective control measures.

Xiaorong Xie, Jan Shair

Chapter 2. Terms, Classifications, and Mechanisms of Wideband Oscillations

Abstract

This chapter provides a deeper understanding of wideband oscillations (WBOs) from the system-level stability perspective. The terms, classifications, and basic occurrence mechanisms of the WBO are discussed. Further, the chapter presents a mechanism-based classification of power system stability and proposes new terms and definitions of WBOs.

Xiaorong Xie, Jan Shair

Modeling and Analysis Methods with Real-World Use Cases

Frontmatter

Chapter 3. Modeling Methods

Abstract

This chapter first gives an overview and classification of the modeling methods for oscillatory stability of converter-dominated power systems. Next, a general philosophy of frequency domain impedance modeling of different types of power system components is discussed. Then, the impedance modeling of different converter-based devices is elaborated with and without considering the operating point dependency. Finally, a brief discussion of the time-domain modeling methods is presented.

Xiaorong Xie, Jan Shair

Chapter 4. Analysis Methods

Abstract

This chapter first presents the objectives of oscillatory stability and the classification of the analysis methods in the time and frequency domains is presented. The chapter focuses on common frequency-domain impedance-based analysis methods are discussed, including the source-load impedance-based Nyquist criterion, frequency domain modal analysis, and aggregated impedance network model. Next, the time-domain eigenvalue and EMT-simulation analysis methods are discussed briefly. Finally, critical insights into the strengths and limitations of different oscillatory stability analysis methods are presented.

Xiaorong Xie, Jan Shair

Chapter 5. Application Case: Oscillatory Stability Analysis of Type-4 Wind Power System

Abstract

This chapter presents the time/frequency-domain modeling and stability analysis of sub/supersynchronous oscillation (S2SO) events in the Hami wind power system in Western China as an application case. The oscillatory stability analysis is carried out using the impedance network modeling-based quantitative analysis, frequency domain modal analysis, and RLC equivalent circuit-based analysis. Furthermore, a stability region analysis is performed to construct a stability region separating the operating points leading to a stable or unstable system. Finally, the source of the oscillation is also identified using field-measured data.

Xiaorong Xie, Jan Shair

Control Methods with Real-World Implementations

Frontmatter

Chapter 6. Mitigation of Wideband Oscillation

Abstract

This chapter first outlines countermeasures to the wideband oscillations (WBOs) in converter-dominated power systems at the planning and design, operational scheduling, damping control, and emergency protection stages. The design principles and implementation methods of new-type power system stabilizers (NPSS) for converter-based devices to mitigate the WBOs are presented, including the principles of their offline and online tuning. Finally, the chapter discusses the application of different types of NPSSs in existing converter-based devices as well as the development of shunt converters specially designed to suppress the WBOs.

Xiaorong Xie, Jan Shair

Chapter 7. Application Case: Mitigation of SSO in Type 3 Wind Power Systems

Abstract

This chapter presents an application case of practical oscillation damping control techniques implemented on a real-world wind power system facing subsynchronous oscillation (SSO). First, the real-world SSO events in the Guyuan wind power systems are discussed. Then, the generator and grid side damping controls are designed, developed, and tested through controller hardware in the loop simulations. The generator- and grid-side subsynchronous damping controls have been put into service in the actual wind power system facing the SSO.

Xiaorong Xie, Jan Shair

Chapter 8. Application Case: Mitigation of HFR in MMC-HVDC System

Abstract

This chapter demonstrates the mitigation of high-frequency resonance/oscillation (HFR/HFO) events in an actual modular multilevel converter (MMC)-based high-voltage DC (HVDC) system using adaptive notch filters. The EMT software simulations verify that the adaptive notch filter with adaptive online measurement of oscillation frequency can suppress the HFO effectively. The results are verified through EMT software simulations and analytically derived impedance-based analysis.

Xiaorong Xie, Jan Shair

Titel: Oscillatory Stability of Converter-Dominated Power Systems
verfasst von: Xiaorong Xie
Jan Shair
Verlag: Springer Nature Switzerland
Electronic ISBN: 978-3-031-53357-0
Print ISBN: 978-3-031-53356-3
DOI: https://doi.org/10.1007/978-3-031-53357-0