MAIN GENERATION (MA) EXCITATION AND REGULATION (MB)

Question 1

1.1
State the purpose of the Main Generation system.

Answer 1

1. Convert mechanical power from the Main Turbine to electrical power.
2. Provide (at appropriate voltage levels) electric power to the Switchyard.
3. Provide (at appropriate voltage levels) electric power to the unit Non-Class 1E power systems.
4. Provide electrical power to the Generator Excitation system.

Question 2

1.2
Describe the design of the Main Generation system.

Answer 2

The Main Generation System includes the:
* Main Generator
o Converts the mechanical rotational power from the Main Turbine into electrical power.
* Isolated Phase (Isophase) Busses
o Transmits power from the generator terminals to the low voltage windings of the main transformer bank and to the high voltage winding of the unit auxiliary transformer.
* Main Transformer Bank
o Three single phase transformers that step up the Generator voltage of 24 kV to the Transmission System voltage of 525 kV.
* Tie lines to the Switchyard
o Transmit power from the main transformer bank to the switchyard.
* Unit Auxiliary Transformer
o A single transformer that steps down the Generator voltage of 24 kV to supply electrical power to the Non-Class power systems at 13.8

Question 3

1.3
Describe the purpose, operation, and location of the Main Generator.

Question 4

1.4
Describe the purpose and operation of the Generator Casing.

Question 5

1.5
Describe the purpose and operation of the Stator.

Question 6

1.6
Describe the purpose and operation of the Rotor.

Question 7

1.7
Describe the purpose and operation of the Collector and its housing.

Question 8

1.8
Describe the purpose and operation of the Isolated Phase Bus.

Question 9

1.9
Describe the purpose, operation, and location of the Main Transformers.

Question 10

1.10
Describe the purpose, operation, and location of the 525 kV Motor Operated Disconnect and Breakers associated with the Main Generator.

Question 11

1.11
Describe the purpose, operation, and location of the Unit Auxiliary Transformers

Question 12

1.12
Describe the normal operation of the Main Generator system.

Question 13

1.13
Describe how a loss of the Main Generation system impacts the operation of the plant.

Question 14

1.14
Describe the interface between the Main Generation system and its support/supported systems.

Question 15

1.15
Describe how the Main Generation system responds to a loss of its associated support systems.

Question 16

1.16
State the purpose of the Main Generation Excitation and Regulation system (MB).

Question 17

1.17
Describe the design of the Main Generator Excitation and Regulation system.

Question 18

1.18
Describe the purpose, operation, and location of the Main Generator Excitation and Regulation Power Potential Transformers.

Question 19

1.19
Describe the purpose and operation of the EX2100e Static Exciter

Question 20

1.20
Describe the purpose, operation, and location of the Power Conversion Room.