The Essentials of Power System Dynamics and Control

ISBN-13: 9789811089138 / Angielski / Twarda / 2018 / 222 str.

Hemanshu Roy Pota

Opis

This book presents a general framework for modelling power system devices to develop complete electromechanical models for synchronous machines, induction machines, and power electronic devices.

Spis treści

1 Introduction

The dq0 Transformation

Device Models

Network Modelling

 

2 Synchronous Machines

The Model

Equations in Per Unit System

Steady-state Conditions

Single Machine Infinite Bus (SMIB)

Exercises

      Direct-axis Transient Inductance

      Quadrature-axis Transient Inductance

      Steady-state Output Power

      Voltage behind Transient Inductance

      Equivalence of two models

      Power Transfer Curves

      Simulation I

      Steady-state

      Simulation II

      Simulation III

      Three-phase Short-circuit Simulation

      Equal-Area Criterion

      Step Change in field voltage

      V-curves

      Phasor to dq-Frame - Part I

      Phasor to dq-Frame - Part II

      Transmission line inductance

      Terminal Voltage

      Operational Impedance

      Operational Impedance & Sub-transient Model

 

3 Induction Machines

The Model

Steady-state conditions

Exercise

      Steady-State Equivalent Circuit

      Steady-State Output Power

       Steady-State Torque vs Speed

        Doubly-

fed Induction Machine - Steady-state

        Voltage Behind Transient Inductance

        Simulation

        Doubly-fed Induction Machine

         Vector Control

         Dynamic Equations with delta

         Phasor to dq-Frame - Part I

         Phasor to dq-Frame - Part II

4 Network Equations Power Systems

Machines as Active Loads

Submatrices in the Model Equations

Forming Z-matrices

Forming D-matrices

Network Equations Referred to Machine Internal Variables

5 Simulations

SMIB Simulation Plots

Induction Machine Simulation

Four-bus System

Mat

lab Scr

ipts Saturation

6 Linear Control: Analysis

Introduction

Linear Differential Equations

First Order Differential Equations

Second Order Differential Equations

Simultaneous First Order Differential Equations

Second Order System Response

Modal Analysis

   Eigenvalue Sensitivity

   Participation Matrix

   Frequency Response

   Root-Locus

   Residues

   Dominant Residue Method

   Feedback and Residues

Linearisation

      Linearisation by Perturbation

Synchronous Machine Linearisation

Single Machine Infinite Bus Equations (without AVR)

Single Machine Infinite Bus Equations (with AVR)

Exercises

    Synchronous Machine Damping Torque

 &nbs

p;  Synch

ronising and Damping Torques

    Multi-machine Systems

7 AVR Tuning

AVR Performance Requirements

AVR Models

Practical Exciters

Control for Governors

Ziegler-Nichols Tuning Method for PID Control

PID Control of Governor

8 Power System Stabilisers

PSS Design

Other PSS Design Methods

Two Lead Blocks

Multi-machine System PSS Design

    G_pvr(s) for multi-machine systems

    Eigenvalue Sensitivity and Participation Matrix

    Dynamic Simulation - Local Mode

    Dynamic Simulation - Inter-area Mode

     Eigenvectors and Participation Factors

O autorze

Dr Hemanshu Pota is a Associate Professor at the University of New South Wales. His research interests are in the areas of modelling and control of flexible structures and acoustical noise, as well as cable-driven long-reach manipulators. He has worked on obtaining models for distributed parameter systems using symbolic algebra software, and on various control techniques for distributed parameter systems, including: H-infinity, spatial control, resonant control, passivity-based controller design and minimax linear quadratic Gaussian (LQG) control.

Blurb

This book presents a general framework for modelling power system devices to develop complete electromechanical models for synchronous machines, induction machines, and power electronic devices. It also presents linear system analysis tools that are specific to power systems and which are not generally taught in undergraduate linear system courses. Lastly, the book covers the application of the models, analysis and tools to the design of automatic voltage controllers and power system stabilisers, both for single-machine-infinite-bus systems and multi-machine interconnected systems.

In most textbooks modelling, dynamic analysis, and control are closely linked to the computation methods used for analysis and design. In contrast, this book separates the essential principles and the computational methods used for power system dynamics and control. The clear distinction between principles and methods makes the potentially daunting task of designing controllers for power systems much easier to approach.

A rich set of exercises is also included, and represents an integral part of the book. Students can immediately apply—using any computational tool or software—the essential principles discussed here to practical problems, helping them master the essentials.