Electric power systems in transition / Olivia E. Robinson, editor.

Format:

Book

Contributor:

Robinson, Olivia E.

Series:

Electrical engineering developments series.

Electrical engineering developments

Language:

English

Subjects (All):

Electric power systems.

Physical Description:

1 online resource (250 p.)

Edition:

1st ed.

Place of Publication:

New York : Nova Science Publishers, Inc., c2010.

Language Note:

English

Summary:

Despite the changes with different structures, market rules, and uncertainties, an energy management system (EMS) control centre must always be in place to maintain the security, reliability, and quality of electric service. This book reviews the function of state estimation.

Contents:

Intro

ELECTRIC POWER SYSTEMS IN TRANSITION

CONTENTS

PREFACE

Chapter 1 PHASE-MODE TRANSFORMATION MATRIX APPLICATION FOR TRANSMISSION LINE AND ELECTROMAGNETIC TRANSIENT ANALYSES

INTRODUCTION

I. TRANSMISSION LINE PARAMETERS DERIVATION FROM IMPEDANCE VALUES [20]

I.1. Frequency-Dependent Transmission Line Parameter Calculating

I.2. Line Parameter Calculating from Phase Current and Voltage Values

II. AN ALTERNATIVE MODEL FOR EQUIVALENT CONDUCTOR DETERMINATION FROM BUNDLED CONDUCTORS

II.1. Analyses for Single Conductors

II.2. Application of Geometric Mean Radius (GMR) Concept for Changing a Bundled Conductor into an Equivalent Conductor

II.3. Alternative Method for Determination of Equivalent Conductor from a Bundled Conductor [36]

III. UNTRANSPOSED SYMMETRICAL THREE-PHASE TRANSMISSION LINE MODAL REPRESENTATION USING TWO TRANSFORMATION MATRICES [37, 38]

III.1. Obtaining the β Exact Mode Applying Clarke's Matrix

III.2. Obtaining the α and 0 Exact Modes Applying a 2-Order Transformation Matrix

III.3. An Actual Transmission Line Sample

IV. SINGLE REAL TRANSFORMATION MATRIX APPLICATIONS FOR UNTRANSPOSED THREE-PHASE TRANSMISSION LINES [39-41]

IV.1. Mathematical Modeling for Modal Transformation Application

IV.2. Untransposed Three-Phase Lines with a Vertical Symmetry Plane

IV.2. Untransposed Three-Phase Lines with Phase Conductors Vertically Lined

IV.4. Untransposed Three-Phase Lines with Phase Conductors Distributed in a Triangular Design

V. CORRECTION PROCEDURE APPLICATION TO CLARKE'S MATRIX [42]

V.1. The Perturbation Approach Corrector Matrix [5]

V.2. Flowchart of the Correction Procedure

V.3. The Q Matrix Application

V.4. The N Matrix Application for Completing the Correction Procedure

VI. IMPROVING SPECIFIC RESULTS [39-41].

VI.1. Other Analyses Associated to the Applications Shown in this Chapter

VII. CONCLUSIONS

REFERENCES

Chapter 2 LOAD MODELING IN POWER SYSTEMS: INDUCTION MOTORS

ABSTRACT

1. INTRODUCTION

1.1. Approaches to Obtain a Model of the Load

1.2. Objectives of this Work

2. INDUCTION MOTORS

2.1. Models for Induction Motor Simulation

2.2. Characteristics Speed-Torque and Current Torque

2.3. Influence of the Motor Inertia

2.4. Small Motors

3. MEASUREMENT BASED LOAD MODEL - SMALL SIGNAL

3.1. Analysis Approach

3.1.1. Examples

3.1.2. Identification with feedthrough

3.1.3. Industrial example of frequency to power relations

3.1.4. Industrial example of voltage magnitude to power relations

3.2. Improving the Small Signal Model: F-V Relationship

3.2.1. Numerical example

3.2.2. Results when applied to real Frequency and Voltage measurements

4. IDENTIFICATION OF MOTOR LOADS

5. LARGE DISTURBANCE

5.1. Simulating Major Disturbances

5.2. Severity Index

5.3. Tripping Index

5.4. Decomposing the Response of Motors in Stalled, Reaccelerated and Tripped

5.5. Example

6. DISCUSSION

7. CONCLUSIONS

ACKNOWLEDGMENTS

Chapter 3 ADVANCED WIDE-AREA ANGLE STABILITY AND VOLTAGE CONTROL

WIDE-AREA ANGLE STABILITY CONTROLS

Adaptive Wide-Area Special Protection and Control Systems

Adaptive wide-Area Control (Wide-Area Response-Based Control)

IMPLEMENTATION OF WIDE-AREA STABILITY CONTROL SCHEMES USING SYNCHRO-PHASOR DATA

The Mexican Interconnected System

Description of Base Cases

Oscillatory Stability Monitoring

The Mis Wams System

Operating Experiences with SPSs and Functional Needs

Response-based Generator Dropping Scheme (GDS)

Requirements for an on-line generator dropping control

Inter-area oscillation monitoring.

Selectivity of generator dropping controls

Experience with the design and testing of generator dropping schemes

Selectivity of generation dropping schemes

SPS steps

Time delay to initiate generator tripping

Wide-Area Under-Frequency Load Shedding Scheme

Sensitivity analyzes

WIDE-AREA VOLTAGE CONTROL

Operating Experience with SVCs

Voltage-VAR Controls

Wide-Area Reactive Power Control - Secondary Voltage Control

Analysis Method

Critical Bus identification using modal voltages

Modal reactive power

Viability Studies

Modal-based identification of critical voltage areas

Hierarchical control of static var compensators

Coordination of reactive power sources

Effect on System Transient Behavior

SUMMARY AND CONCLUSIONS

Chapter 4 DESIGN AND APPLICATION OF A PROPOSED OVERCURRENT RELAY IN RADIAL DISTRIBUTION NETWORKS

I. INTRODUCTION

II. INVERSE TIME OVERCURRENT DIGITAL RELAY

III. OPERATING LIMITS OF THE OVERCURRENT RELAY

IV. APPLICATION CRITERIA OF PROPOSED RELAY IN POWER SYSTEMS

V. FIRST FUNCTION

A. Time Coordination

B. Coordination

C. Test Operation in Steady State and Dynamic State

D. Fault Confirmation Logic

E. Application Criteria for the First Function

VI. SECOND FUNCTION

a. Overcurrent Relays

b. Test

VII. CONCLUSION

Chapter 5 POWER SYSTEMS STATE ESTIMATION

2. STATE ESTIMATION MODEL

3. STATE ESTIMATION ALGORITHMS

3.1. WLS Algorithm for State Estimation

3.2. Topological Observability Analysis [3]

3.2.1 Formulation of topological observability [8-16]

3.2.2 Augmented graph for observability analysis

3.3. Identification of Bad Measurement Data [3]

3.3.1. Properties and classification of bad data groups

3.3.2. Criticality of flow measurements based on graph theory.

4. HARMONIC STATE ESTIMATION

5. PMU BASED STATE ESTIMATION

Chapter 6 ADVANCED FAULT LOCATION TECHNIQUE FOR PARALLEL POWER TRANSMISSION LINES

II. PROPOSED FAULT LOCATION METHOD

II.1. Construction of bus Impedance Matrix with Addition of the Fault Bus

II.2. Fault Location Algorithms

A. Fault location with measurements from two buses

B. Fault location with measurements from a single bus

III. SIMULATION STUDIES

IV. CONCLUSION

INDEX

Blank Page.

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

1-61728-313-4

OCLC:

923662742