Practical power systems protection / Les Hewitson, Mark Brown, Ben Ramesh

Contents

1 Need for protection
1.1 Need for protective apparatus
1.2 Basic requirements for protection
1.3 Basic components of protection, etc

2. Faults, types and effects
2.1 The development of simple distribution systems
2.2 Fault types and their effects

3. Simple calculation of short circuit currents
3.1 Introduction
3.2 Revision of basic formulae
3.3 Calculation of short-circuit MVA, etc

4. System earthing
4.1 Introduction
4.2 Earthing devices
4.3 Evaluation of earthing methods, etc

5. Fuses
5.1 Historical
5.2 Rewireable type
5.3 cartridge types, etc

6. Instrument transformers
6.1 Purpose
6.2 Basic theory of operation
6.3 Voltage transformers, etc

7. Circuit breakers
7.1 Introduction
7.2 Protective relay-circuit breaker combination
7.3 Purpose of circuit breaker, etc

8. Tripping batteries
8.1 Tripping batteries
8.2 Construction of battery charges
8.3 Maintenance guide, etc

9. Relays
9.1 Introduction
9.2 Principle of the construction and operation of the elctromechanical IDMTL relay
9.3 Factors influencing the choice of plug setting, etc

10. Coordination by time grading
10.1 Protection design parameters on medium and low-voltage networks
10.2 Sensitive earth fault protection

11. Low-voltage networks
11.1 Introduction
11.2 Air circuit breakers
11.3 Moulded case circuit breakers, etc

12. Mine underground distribution protection
12.1 General
12.2 Earth-leakage protection
12.3 Pilot wire monitor, etc

13. Principles of unit protection
13.1 Protective relay systems
13.2 Main or unit protection
13.3 Back-up protection, etc

14. Feeder protection cable feeders and overhead lines
14.1 Introduction
14.2 Translay
14.3 Solkor protection, etc

15. Transformer protection
15.1 Winding polarity
15.2 Transformer connections
15.3 Transformer magnetizing characteristics, etc

16. Switchgear (busbar) protection
16.1 Importance of busbar
16.2 Busbar protection
16.3 The requirements for good protection, etc

17. Motor protection relays
17.1 Introduction
17.2 Early motor protection relays
17.3 Steady-state temperature rise, etc

18. Generator protection
18.1 Introduction
18.2 Stator earthing and earth faults
18.3 Overload protection, etc

19. Management of protection
19. 1 Management of protection
19.2 Schedule A
19.3 Schedule B, etc

Includes index : p.274-277