Renewable Integrated Power System Stability and Control
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Renewable Integrated Power System Stability and Control
About This Book
RENEWABLE INTEGRATED POWER SYSTEM STABILITY AND CONTROL
Discover new challenges and hot topics in the field of penetrated power grids in this brand-new interdisciplinary resource
Renewable Integrated Power System Stability and Control delivers a comprehensive exploration of penetrated grid dynamic analysis and new trends in power system modeling and dynamic equivalencing. The book summarizes long-term academic research outcomes and contributions and exploits the authors' extensive practical experiences in power system dynamics and stability to offer readers an insightful analysis of modern power grid infrastructure.
In addition to the basic principles of penetrated power system modeling, model reduction, and model derivation, the book discusses inertia challenge requirements and control levels, as well as recent advances in visualization of virtual synchronous generators and their associated effects on system performance. The physical constraints and engineering considerations of advanced control schemes are deliberated at length.
Renewable Integrated Power System Stability and Control also considers robust and adaptive control strategies using real-time simulations and experimental studies. Readers will benefit from the inclusion of:
- A thorough introduction to power systems, including time horizon studies, structure, power generation options, energy storage systems, and microgrids
- An exploration of renewable integrated power grid modeling, including basic principles, host grid modeling, and grid-connected MG equivalent models
- A study of virtual inertia, including grid stability enhancement, simulations, and experimental results
- A discussion of renewable integrated power grid stability and control, including small signal stability assessment and the frequency point of view
Perfect for engineers and operators in power grids, as well as academics studying the technology, Renewable Integrated Power System Stability and Control will also earn a place in the libraries of students in Electrical Engineering programs at the undergraduate and postgraduate levels who wish to improve their understanding of power system operation and control.
Frequently asked questions
Information
1
Introduction
1.1 Power System Stability and Control
- Frequency control: Since the frequency generated in an electric network is proportional to the rotation speed of the generator, the problem of frequency control may be directly translated into a speed control problem of the turbine generator unit. This is initially overcome by adding a governing mechanism that senses the machine speed and adjusts the input valve to change the mechanical power output to track the load change and to restore frequency to nominal value. Depending on the frequency deviation range, different frequency control loops, i.e., primary, secondary, and tertiary, may be required to maintain power system frequency stability [4]. The secondary frequency control which is also known as load frequency control (LFC) initializes a centralized and automatic control task using the assigned spinning reserve. The LFC is the main component of an automatic generation control (AGC) system [5]. In large power systems, this control loop is activated in the time frame of few seconds to minutes after a disturbance. In a modern AGC system, based on the received area control error (ACE) signal, an online tuning algorithm must adjust the LFC parameters to restore the frequency and tie‐line powers to the specified values.
- Voltage control: The generators are usually operated at a constant voltage by using an automatic voltage regulator (AVR) which controls the excitation of the machine via the electric field exciter system. The exciter system supplies the field winding of the synchronous machine with direct current to generate required flux in the rotor. A system enters a state of voltage instability when a disturbance changes the system condition to make a progressive fall or rise of voltages of some buses. Loss of load in an area, tripping transmission lines, and other protected equipment are possible results of voltage instability. Like frequency control, the voltage control is also characterized via several control loops in different system levels. The AVR loop which regulated the voltage of generator terminals is located on lower system levels and responds typically in a time scale of a second or less.
- Angle control: Rotor angle stability is the ability of the power system to maintain synchronization after being subjected to a disturbance. Angle stability refers to damping of power oscillations inside subsystems and between subsystems on an interconnected grid during variation beyond specified threshold levels. The risk of losing angle stability can be significantly reduced by using proper control devices inserted into the power grid to find a smooth shape for the system dynamic response. The power oscillation damping has been mainly guaranteed by power system stabilizers (PSSs). A PSS is a controller, which, beside the turbine‐governing system, performs an additional supplementary control loop to the AVR system of a generating unit. Depending on the type of PSS, the input signal could be the rotor speed/frequency deviation, the generator active power deviation, or a combination feedback of rotor speed/frequency and active power changes. This signal to be passed through a combination of a lead‐lag compensators. The PSS output signal is amplified to provide an effective output signal.In order to damp the inter‐area oscillations, which have smaller oscillation frequency than the local oscillatory modes, a wide‐area control (WAC) system is...
Table of contents
- Cover
- Table of Contents
- Series Page
- Title Page
- Copyright Page
- Dedication Page
- Preface
- Acknowledgments
- Nomenclature
- List of Abbreviations and Acronyms
- 1 Introduction
- 2 MG Penetrated Power Grid Modeling
- 3 Stability Assessment of Power Grids with High Microgrid Penetration
- 4 Advanced Virtual Inertia Control and Optimal Placement
- 5 Wide‐Area Voltage Monitoring in High‐Renewable Integrated Power Systems
- 6 Advanced Control Synthesis
- 7 Small‐Signal and Transient Stability Assessment Using Data‐Driven Approaches
- 8 Solar and Wind Integration Case Studies
- Index
- End User License Agreement