Tech Requirements

Question 1

Was there any change in frequency versus time requirements from the 2006 code and 2024 code?

Answer 1

No

Question 2

Frequency range for continuous operation and rated output/pf.

Answer 2

By Grid Code - 49-51 Hz
NC RfG requires down to 47.5 for 30 min

Question 3

2% of 50 Hz

Answer 3

1 Hz

Question 4

How do the Grid Code frequency requirements for STG compare to WEC’s?

Answer 4

Much more stringent than WEC’s.

Question 5

What if the required power factor profile called?

Answer 5

Q over Pmax versus voltage curve

Question 6

What Section is “Technical requirements and recommendations for equipment….”

Answer 6

3.3

Question 7

What is active power primary control?

Answer 7

Normal governor load-frequency control.

Question 8

What is the function of active power tertiary control?

Answer 8

To control various generators in the best possible way, in terms of economic considerations.

Question 9

What is the function of active power secondary control?

Answer 9

To restore the SYSTEM FREQUENCY to its set-point value.

Question 10

How fast is primary control?

Answer 10

a few seconds

Question 11

After a frequency disturbance, is the frequency of the system returned to normal?

Answer 11

No. The frequency stabilizes but differs from the frequency set-point because of the DROOP OF THE GENERATORS.

Question 12

How fast is secondary control?

Answer 12

15 to 30 seconds

Question 13

How is secondary control achieved?

Answer 13

Generally automatic

Question 14

How is tertiary control achieved?

Answer 14

Central dispatch

Question 15

What is the range for required primary control.

Answer 15

± 5% of Pmax

Question 16

What is “aFRR”?

Answer 16

automatic Frequency Restoration Reserve

Question 17

Synonym for aFRR?

Answer 17

Secondary Reserve

Question 18

Physically, what are the primary and secondary controllers?

Answer 18

primary controls - the governors on the turbines
secondary controls - the supervisory computer systems

Question 19

What is the ARNE system?

Answer 19

Automatic voltage and reactive power control using AVR of generator and collaborating with master system ARST

Question 20

What is the ARST system?

Answer 20

Automatic voltage control system as a master for ARNE and using on-load tap changer of transformer

Question 21

What is SORN?

Answer 21

Area voltage control system for remote supervision ARNE and ARST

Question 22

What is section 3.8?

Answer 22

3.8. Technical requirements for existing PGMs

Question 23

What is Section 4?

Answer 23

TECHNICAL REQUIREMENTS FOR ANCILLARY INFRASTRUCTURE

Question 24

What is the WIRE system?

Answer 24

energy market information exchange system

Question 25

What is FCR?

Answer 25

Frequency Containment Reserve Grid-level algorithm for frequncy control

Question 26

What is FRR?

Answer 26

frequency restoration reserves

Question 27

Difference between FCR and FRR?

Question 28

ICT?

Answer 28

data transmission and information exchange

Question 29

Reg 2196?

Answer 29

aka - NC ER Network Code on Emergency Restoration

Question 30

What is SOWE (sova) system?

Answer 30

operational cooperation system with balancing service providers (SOWE) – dedicated to exchange operational and planning information

Question 31

What is MBS?

Answer 31

Metering and Billing System

Question 32

BMU?

Answer 32

balancing mechanism unit

Question 33

Description of BMU.

Answer 33

the smallest grouping that can be independently controlled

Question 34

What is Section 3.3.1?

Answer 34

Tech Requirements for PGMs Connected at 110 kV or higher

Question 35

What is Section 3.6?

Answer 35

Technical requirements for active power control

Question 36

What does IRESP and NCRfG say about LFSM?

Answer 36

Nothing that I have found.