Tuesday, July 1, 2008

Coordinated Power System Protection

File : pdf, 1.89 MB, 100 pages

CHAPTER 1. GENERAL REQUIREMENTS
Purpose
Scope
References
Electrical power systems
Design procedures

CHAPTER 2. ELECTRICAL POWER SYSTEM OVERCURRENTS
General
Normal current
Overload current
Short-circuit current
Ground-fault current
Sources of short-circuit current
Time variation of short-circuit current
Symmetrical and asymmetrical short-circuit current

CHAPTER 3. OVERCURRENT PROTECTIVE DEVICES
General
Motor overload relays
Fuses.
Motor short-circuit protectors (MSCP)
Circuit breakers
Protective relays
Automatic reclosing devices

CHAPTER 4. PROTECTIVE DEVICES COORDINATION
General
The coordination study
Primary and medium-voltage coordination
Low-voltage coordination
Ground-fault coordination
Coordination requirements
Maintenance, testing, and calibration
Example of phase coordination
Example of ground-fault protection

CHAPTER 5. ELECTRICAL SYSTEM PROTECTION TECHNIQUES
Generator protection
Transformer protection
Conductor protection
Motor protection
Bus and switchgear protection
Ground-fault protection
Miscellaneous equipment protection .
App A. REFERENCES
App B. TYPICAL PROTECTIVE DEVICE SETTINGS
App C. TYPICAL TIME-CURRENT CHARACTERISTIC CURVES
App D. TYPICAL DEVICE AND EQUIPMENT RATINGS
App E. PARTIAL RELAY DEVICE NUMBERS LIST
App F. REPRESENTATIVE PROTECTIVE DEVICE OPERATING TIMES
App G. COORDINATION EXAMPLES
App H. COMPUTER SOFTWARE APPLICATIONS
BIBLIOGRAPHY
GLOSSARY

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