BAL-001

Question 1

What is the purpose of BAL-001?

Answer 1

To maintain Interconnection steady state frequency within defined limits by balancing real power demand and supply in real time

Question 2

What is the purpose of Control Performance Standard (CPS1)

Answer 2

Measures how well a Balancing Authority is able to control its generation and load management programs, as measured by its ACE, to support its Interconnection’s frequency. Information and calculations found on Attachment 1.

Question 3

What is the purpose of Balancing Authority ACE Limit (BAAL)?

Answer 3

States that the Balancing Authority shall operate such that its clock-minute average of Reporting ACE does not exceed its clock minute BAAL for more than 30 consecutive clock-minutes calculated in accordance with Attachment 2. Replaced CPS2.

Question 4

What is the Balancing Authorities primary oblgation?

Answer 4

Control generation to balance load and interchange and help regulate and stabilize Interconnection frequency

Question 5

Reporting ACE equation?

Answer 5

(NIA-NIS)-10B(FA-FS)-IME
(where B is ALWAYS NEGATIVE, and FS is 60Hz unless doing time error correction)

Question 6

What does 10B represent in the ACE equation?

Answer 6

Balancing Authority’s frequency bias (MW/Hz)

Question 7

What does B represent in the ACE equation and what are the units?

Answer 7

Frequency bias setting (MW/0.1Hz)

Question 8

What are the 4 Interconnections?

Answer 8

Western, Eastern, ERCOT, Quebec

Question 9

Reporting ACE is calculated at least every ___.

Answer 9

6 seconds

Question 10

Negative Interchange means power flowing ___ and Positive Interchange means power flowing ___.

Answer 10

Negative - Power flowing in
Positive - Power flowing out

Question 11

Time error correction frequencies are ___.

Answer 11

60Hz+/-0.02Hz

Question 12

When frequency is above 60Hz, it is a ___ or ___ Time Error, when frequency is below 60Hz, it is a ___ or ___ Time Error.

Answer 12

Above 60Hz = Positive or fast Time Error
Below 60Hz = Negative or slow Time Error

Question 13

What are the 2 methods for Time Error Correction?

Answer 13

Frequency Offset Method and Scheduled Offset Method

Question 14

What is the Frequency Offset Method?

Answer 14

Adjust frequency by +/-0.02Hz. (60.02Hz for slow clock, 59.98Hz for fast clock.

Question 15

What is Scheduled Offset Method?

Answer 15

Adjust NIs by amount equal to the computed bias contribution during a 0.02Hz Frequency deviation. By 20% Frequency Bias setting.

Question 16

BAL-001 Requirement 1, each Responsible Entity shall operate such that CPS1, calculated according with Attachment 1, is ___ for the applicable Interconnection in which it operates for each preceding ___ consecutive calendar month period, evaluated ___.

Answer 16

greater than or equal to 100%
12
monthly

Question 17

A Balancing Authority providing Overlap Regulation Service to another Balancing Authority calculates its CPS1 performance after combining its ___ and ___ with that of the Balancing Authority receiving the Regulation Service.

Answer 17

Reporting ACE
Frequency Bias Setting

Question 18

BAL-001 requires reporting each ___ and includes the previous ___ of data with a minimum percent compliance of at least ___.

Answer 18

calendar month
12 months
100%

Question 19

___ of the samples must be present in order to ensure the average ACE and Frequency deviation calculated for any one minute interval is representative of that one minute interval, else that one minute interval must be ___ from the CPS1 calculation.

Answer 19

50%
excluded

Question 20

CPS1 is calculated and evaluated ___.

Answer 20

monthly

Question 21

BAAL states that each Balancing Authority must operate so its clock minute average does not exceed its Balancing Authority ACE Limit for more than ___ consecutive clock minutes.

Answer 21

30