Stakeholder Comment Form
AESO AUTHORITATIVE DOCUMENT PROCESS
Amendment of ISO OPP 503
NOTE: The AESO is asking market participants to provide an initial indication of their support for, or opposition to, the specific ISO
OPP rule changes referenced below. Such an initial indication assists in the AESO’s practical understanding of the receptivity of the
industry to the proposed changes. The AESO thanks in advance all market participants who choose to respond. With regard to the
specific ISO OPP rule changes and their implications, such responses are without prejudice to the rights of market participants under
the Act, any regulations, or related decisions of the Commission.
Date of Request for Comment:
Period of Consultation:
2009/11/19
2009/11/19
through 2009/12/04
Comments From:
Date [yyyy/mm/dd]:
Contact:
Phone:
E-mail:
G1 Definitions to ISO Rules
No change
(mark with ”x”)
Support
Oppose
No Comment
Reason for Stakeholder Positions:
Alternate Proposal:
Proposed ISO OPP Rule Changes: 2009-November-19
Page 1 of 6
OPP 503 Empress Area Operation
1.
Purpose
To define the policies and procedures for the ISO to manage motor starts in the Empress area.
(mark with ”x”)
Support
Oppose
No Comment
Reason for Stakeholder Positions:
Alternate Proposal:
2.
Background
The ISO must coordinate the simultaneous starts of multiple motors, 25,000 hp or larger, in order to control
under voltage conditions in the area. Specific operating conditions must be met before starting the 54,000
hp motor at Sand Hills to limit the effect of under voltage in the area. If specific conditions are not met,
starting the motor may affect the reliability of the system.
(mark with ”x”)
Support
Oppose
No Comment
Figure 1 shows the transmission system in the Empress area.
Reason for Stakeholder Positions:
Alternate Proposal:
3.
3.1
Policy
Switching Amoco Empress (T163S) capacitor banks
Depending on the real-time system conditions and when practical, one capacitor bank at Amoco
Empress (T163S) must be put into service when any of the following conditions occurs:
(mark with ”x”)
Support
Oppose
No Comment
(a) One Sheerness unit is out of service;
(b) Depending on the real-time system conditions and when practical, the second capacitor bank at
Amoco Empress (T163S) must be put into service when both Sheerness units are out of service.
Proposed ISO OPP Rule Changes: 2009-November-19
Page 2 of 6
3.3
Motor starting at Sand Hills
(second bullet amendment)
 The ISO must deny the request for approval to start the 54,000 hp motor at Sand Hills if the
motor start could adversely affect system reliability or if the following conditions are not met:

Both Sheerness generators are online, unless the SC approves starting the motor with one
generator offline. (see Section 5.1 and Section 5.2).
Reason for Stakeholder Positions:
Alternate Proposal:
4.
Responsibilities
4.1
ISO
Outline, in the System Coordination Plan submitted to the SC, transmission facility owners (TFOs)
and generation facility owners (GFOs), any transmission outages that would affect the motor starting
capabilities in the area.
4.2
Empress area DTS customers
(mark with ”x”)
Support
Oppose
No Comment
The following is a list of DTS customers in the Empress area:
Confidential Table 1 provides contract levels for DTS customers and Confidential Table 2 provides
customer contact information.
Reason for Stakeholder Positions:
Alternate Proposal:
5.
5.2
System Controller Procedures
Starting the 54,000 hp motor at Sand Hills with two Sheerness units online
The SC must:
Proposed ISO OPP Rule Changes: 2009-November-19
(mark with ”x”)
Support
Oppose
No Comment
Page 3 of 6
1.
2.
Ensure all required system conditions are met for the motor start.
Deny any request for a motor start if any of the conditions stated in Section 3.3 are not met, or if
the ISO assesses that the motor start could adversely affect system security.
5.3 Starting the 54,000 hp motor at Sand Hills with one Sheerness unit online
The SC must:
2.
Deny the customer’s request for a motor start, with the exception of both Sheerness generators
online, if any of the conditions stated in Section 3.3 are not met, or if the ISO assesses that the
motor start could adversely affect system security.
Reason for Stakeholder Positions:
Alternate Proposal:
6.
Figures and Tables
Proposed ISO OPP Rule Changes: 2009-November-19
(mark with ”x”)
Page 4 of 6
Support
Oppose
No Comment
Figure 1 Empress Area
To
A774S
To
A763S
A767S
Oyen
6L09
240 kV Lines
M
138 kV Lines
914S
Bindloss
69 kV Lines
Metering points
7LA760
164S
Empress Liquids
M
760AL
204S
Sandy Point
To
A801S
934L
7L760L
869L
230S
Wardlow
950L
341S
Sand Hills
601L
871L
M
132S
Ware Junction
951L
M
931L
163S
Amoco Empress
1002L
275S
Jenner
944L
945L
1011L
562S
Cypress
To
T28S
669L
658L
668L
M
To
895S
100L
760L
649S
Chappice Lake
394S
Empress
697L
830L
41S
Medicine Hat
A840S
McNeill
172L
9LS1M
To
Saskatchewan
To
532S
Reason for Stakeholder Positions:
Alternate Proposal:
Proposed ISO OPP Rule Changes: 2009-November-19
Page 5 of 6
Please return this form with your comments by 2009/12/04 to:
Jason Murray
Manager Operations Services
E-mail: opp_comments@aeso.ca
Phone: (403) 705-5230
Fax: (403) 705-5252
Proposed ISO OPP Rule Changes: 2009-November-19
Page 6 of 6