Real-time stability assessment in modern power system control centers

This book answers the need for a practical, hands-on guide for assessing power stability in real time, rather than in offline simulations. Since the book is primarily geared toward the practical aspects of the subject, theoretical background is reduced to the strictest minimum. For the benefit of readers who may not be quite familiar with the underlying theoretical techniques, appendices describing key algorithms and theoretical issues are included at the end of the book. It is an excellent source for researchers, professionals, and advanced undergraduate and graduate students.

Author Notes

Savu C. Savulescu, PhD, has more than thirty years of experience in computer engineering, utility operations, planning, and control. Currently CEO of Energy Consulting International, Inc., he has worked predominantly in the design and implementation of utility information systems, such as SCADA/EMS, and developed stability assessment software that is being used in real-time and off-line in the U.S., Europe, Latin America, and Asia. Dr. Savulescu has taught electric power systems and computer sciences at major universities in Belgium, Brazil, and the U.S.

Preface

Contributors

1 The Real-Time and Study-Mode Data Environment in Modern SCADA/EMSSudhir Virmani and Savu C. Savulescu

1.1 Introduction

1.2 SCADA/EMS Architectures

1.3 Integrating Stability Applications with the SCADA/EMS

1.4 References

2 Overview of Key Stability Concepts Applied for Real-Time OperationsSavu C. Savulescu

2.1 Introduction

2.2 In Search of the Stability Limits

2.3 Transient and Voltage Stability Limits

2.4 Steady-State Stability Limits

2.5 Concluding Remarks

2.6 References

Annex 1-1. Reactive Power Steady-State Stability Criterion d¿Q/dV

3 LIPA Implementation of Real-Time Stability Monitoring in a CIM Compliant EnvironmentLoris Arnold, Janos Hajagos, Susan M. Manessis, and Anie Philip

3.1 Introduction

3.2 Static and Dynamic Security Assessment at LIPA

3.3 Benchmarking the Real-Time Stability Application

3.4 Practical Experience and Outlook

3.5 References

4 Real-Time Stability Monitoring at the Independent System Operator in Bosnia and HerzegovinaDusko Vickovic and Roland Eichler

4.1 Introduction

4.2 Interim Implementation of Real-Time Stability Assessment at NOS BiH

4.3 Real-Time Stability Assessment in the New SCADA/EMS Environment

4.4 Conclusions and Recommendations

4.5 References

Annex 4-1. TSL, TTC, and the Stability Envelope

Annex 4-2. Siemens Implementation of the Continuation Power Flow

5 Experience with Real-Time Stability Assessment at TranselectricaHoria S. Campeanu and Cornel Erbasu, and Cornel Aldea

5.1 Introduction

5.2 Security Assessment Philosophy and Criteria

5.3 Real-Time Steady-State Stability Assessment and Monitoring

5.4 Off-Line Stability Tools in Support of System Operations

5.5 Conclusions and Outlook

5.6 References

6 Implementation of Online Dynamic Security Assessment at Southern CompanyKip Morison, Lei Wang, Fred Howell, James Viikinsalo, and Alan Martin

6.1 Introduction

6.2 DSA Implementation Fundamentals

6.3 Transient Security Assessment Implementation at Southern Company

6.4 Conclusions

6.5 References

Annex 6-1. Further Details of the DSA Software and Hardware Architecture

Description of the Core DSA Software

Online DSA Implementation Using DSATools

7 Online Security Assessment for the Brazilian SystemA Detailed Modeling ApproachJorge L. Jardim

7.1 Introduction

7.2 Security Criteria and Functions

7.3 Solution Methods and Architecture

7.4 Practical Implementation Aspects

7.5 User Interface And Performance

7.6 Concluding Remarks

7.7 Acknowledgments

7.8 References

8 Dynamic Network Security Analysis in a Load Dispatch CenterGuenther Beissler, Olaf Ruhle, and Roland Eichler

8.1 Introduction

8.2 Siemens Approach to Dynamic Security Assessment

8.3 Case Studies: Challenges, Implementation Approach, and Solution Features

8.4 References

Annex 8-1. Further Dynamic Simulation Capabilities

Time Frame for Dynamic Simulations

Simulation in the Frequency Domain

Eigenvalue and Modal Analysis

9 Real-Time Transient Security Assessment in Australia at NEMMCOStephen J. Boroczky

9.1 Introduction

9.2 Transient Security Assessment at NEMMCO

9.3 Performance and Reliability

9.4 Experience, Benefits, and Outlook

9.5 References

10 Online Voltage Security Assessment in the Hellenic Interconnected SystemCostas Vournas, George Christoforidis, and Thierry Van Cutsem

10.1 Introduction

10.2 The Control Center of HTSO

10.3 Online VSA in the Hellenic System

10.4 Use of Online VSA For Arming Load-Shedding Protection

10.5 Conclusion

10.6 References

Annex 10-1. Quasi-Steady-State Simulation

Principle of the QSS Approximation

Handling of Frequency in QSS Simulation

QSS Model of the Synchronous Machine and its Regulations

Numerical Integration of the QSS Model

11 The Real-Time Supervision of Transmission Capacity in the Swedish GridLars Sandberg and Klas Roudén

11.1 Introduction

11.2 Prior and Current Application Development at SVK

11.3 Voltage Security Assessment with SPICA

11.4 Benefiting from the Knowledge of the Current Transmission Capacity

11.5 Additional SPICA Functionality

11.6 Summary

Appendix A Dimos Approach to Steady-State Stability Assessment: Methodology Overview, Numerical Example, and Algorithm ValidationRoberto D. Molina Mylius, Martín Cassano, and Savu C. Savulescu

A.1 Methodology Overview

A.2 Numerical ExampleIndependent Testing of Algorithm Implementation

A.3 Benchmarking the Methodology

A.4 Conclusions

A.5 References

Appendix B SIME: A Comprehensive Approach to Transient StabilityMania Pavella, Daniel Ruiz-Vega, and Mevludin Glavic

B.1 Introduction

B.2 Basic Formulation

B.3 Preventive SIME

B.4 Emergency SIME

B.5 Postface

B.6 References

Notation

Abbreviations and Acronyms

Appendix C Detection and Evaluation of Stability ConstrainedMarius Pomarleanu and Savu C. Savulescu

C.1 Introduction

C.2 Approach

C.3 Conclusions

C.4 References

Index

Available:*

On Order

Summary

Summary

Author Notes

Table of Contents