BAL-001-002 REAL POWER BALANCING CONTROL PERFORMANCE

Question 1

Area Control Error (ACE)

Answer 1

The instantaneous difference between a Balancing Authority’s net actual and schedule interchange, considering the effects of Frequency Bias, correction for meter error, and Automatic Time Error Correction (ATEC), if operating in the ATEC mode.

Question 2

Automatic Time Error Correction (ATEC), is only applicable to Balancing Authorities in which inter connection(s)?

Answer 2

in the Western Interconnection.

Question 3

Reporting ACE

Answer 3

A Balancing Authority’s ACE measured in MW, which includes the difference between the BA’s Net Interchange Actual and it’s Net Interchange Scheduled, plus its Frequency Bias obligation, plus any known meter error.

Question 4

Regulation Reserve Sharing Group

Answer 4

2 or more Balancing Authorities that collectively maintain, allocate, and supply the Regulating Reserve required for all member Balancing Authorities to use in meeting applicable regulating standards.

Question 5

Reserve Sharing Group Reporting ACE

Answer 5

At any given time of measurement for the applicable Regulation Reserve Sharing Group, the algebraic sum of the Reporting ACE’s of the BA’s participating in the Regulation Reserve Sharing Group at the time of measurement

Question 6

Automatic Time Error Correction (ATEC)

Answer 6

The addition of a component to the ACE equation that modifies the control point for the purpose of continuously paying back Primary Inadvertent Interchange to correct accumulated time error.

Question 7

BAL-001 has 2 requirements, what are they?

Answer 7

Control Performance Standard 1 (CPS1) and Balancing Authority ACE Limit (BAAL)

Question 8

BAL-001 Requirement 1 or CPS1 measures_____.

Answer 8

how well a BA is able to control its generation and load management programs, as measured by it’s ACE, to support it’s interconnection’s frequency. The time period is over a rolling one-year period.

Question 9

BAL-001 Requirement 2 or BAAL replaced (1)_____ and it’s purpose is that(2)______.

Answer 9

(1) CPS2
(2) A BA shall operate such that its clock minute average of Reporting ACE does not exceed its clock minute BAAL for more than 30 clock minutes.

Question 10

Balancing Authorities maintain load-interchange-generation balance and support interconnection frequency in real-time using this equation.

Answer 10

Area Control Error (ACE)

Question 11

ACE is calculated =

Answer 11

(NIa − NIs) − 10B (Fa − Fs) – IME

Question 12

True or False

An ACE value of zero means a BA is not meeting its obligation and has 0 MW of generation.

Answer 12

False, an ACE value of zero means the BA is meeting its obligation in regards to generation-load and interconnection frequency

Question 13

True or False

A positive ACE values means that the BA is exceeding its obligation and over generating.

Answer 13

True

Question 14

True or False

A negative ACE values means that the BA is exceeding its obligation and over generating.

Answer 14

False, a negative ACE value indicates that the BA in not meeting its obligation and is under generating.

Question 15

Time Error

Answer 15

caused by accumulation of Frequency Error over a period of time.

Question 16

What are the two methods of Time Error Correction?

Answer 16

1) Frequency Offset Method

2) Scheduled Offset Method

Question 17

Frequency Offset Method

Answer 17

The BA offsets its Schedule Frequency (Fs) in the ACE equation by plus or minus .02 Hz

Question 18

To correct a fast time error by using the Frequency Offset Method, the Scheduled Frequency (Fs) for the ACE equation should be adjusted to?

Answer 18

59.98 Hz

Question 19

To correct a slow time error by using the Frequency Offset Method, the Scheduled Frequency (Fs) for the ACE equation should be adjusted to?

Answer 19

60.02 Hz

Question 20

To make time error correction the BA’s offsets the NIs portion of the ACE equation by 20% of the Frequency Bias. He/She is using what time error correction method?

Answer 20

Schedule Offset Method