Preface ix
Acknowledgments xv
Chapter 1 System Overview, Terminology, and Basic Concepts 1
Chapter Objectives 1
History of Electric Power 1
System Overview 2
Terminology 3
AC Voltage Generation 9
AC Connections 14
Three Types of Electrical Load 15
Chapter 2 Generation 19
Chapter Objectives 19
Real-Time Generation 19
Power Plants and Prime Movers 20
Chapter 3 Transmission Lines 43
Chapter Objectives 43
Transmission Lines 43
Conductors 45
Transmission Line Design Parameters (Optional Supplementary Reading) 50
Underground Transmission (Optional Supplementary Reading) 51
DC Transmission Systems (Optional Supplementary Reading) 52
Chapter 4 Substations 53
Chapter Objectives 53
Substation Equipment 53
Transformers 54
Regulators 63
Circuit Breakers 69
Reclosers 74
Disconnect Switches 75
Lightning Arresters 79
Electrical Bus 81
Capacitor Banks 83
Reactors 84
Static Var Compensators 86
Control Building 87
Preventive Maintenance 88
Chapter 5 Distribution 91
Chapter Objectives 91
Distribution Systems 91
Transformer Connections (Optional Supplementary Reading) 102
Fuses and Cutouts 110
Riser or Dip Pole 112
Underground Service 112
Chapter 6 Consumption 119
Chapter Objectives 119
Electrical Energy Consumption 119
Power System Efficiency 121
Power Factor 122
Supply and Demand 123
Demand Side Management 124
Metering 125
Performance-Based Rates 131
Service Entrance Equipment 132
Chapter 7 System Protection 147
Chapter Objectives 147
Two Types of Protection 147
System Protection Equipment and Concepts 148
Distribution Protection 152
Transmission Protection 155
Substation Protection 157
Generator Protection 158
Generator Synchronization 160
Overall Transmission Protection 162
Substation Automation 162
Chapter 8 Interconnected Power Systems 165
Chapter Objectives 165
Interconnected Power Systems 165
The North American Power Grids 166
Regulatory Environment 167
Interchange Scheduling 170
Interconnected System Operations 171
System Demand and Generator Loading 177
Reliable Grid Operations 180
Chapter 9 System Control Centers and Telecommunications 187
Chapter Objectives 187
Electric System Control Centers 187
Supervisory Control and Data Acquisition (SCADA) 189
Energy Management Systems 191
Wide Area Monitoring Systems (WAMS) 194
Smart Grid 196
Utility Communications Systems 207
Chapter 10 Personal Protection (Safety) 209
Chapter Objectives 209
Electrical Safety 209
Personal Protection 210
ARC-Flash 218
Electrical Safety Around the Home 222
Appendix A The Derivation of Root Mean Squared 225
Appendix B Graphical Power Factor Analysis 227
Recommended Reading 229
Index231