1. Special Protection Systems: Operational and Compensation Issues
14 Jan 2004
Market Operations Standing Committee

2. Purpose of Presentation and Discussion
Background information on Special Protection Systems
Operational and compensation issues and considerations regarding Special Protection Systems raised in MR-00247: Amendments to Ensure Proper Operation and Compensation for Special Protection Systems
Seeking MOSC input on resolution of issues; feedback will be given to Technical Panel for consideration in development of MR rule amendments
14 Jan 2004
Market Operations Standing Committee

3. What are Special Protection Systems (SPSs)?
Special Protection Systems have been installed historically on the IMO-controlled grid to automatically initiate one or more of the following control actions
Generation rejection
Generation runback
Load rejection
Shunt capacitor switching
Shunt reactor switching
Cross-tripping
14 Jan 2004
Market Operations Standing Committee

4. Market Operations Standing Committee
Purpose of SPSs
Used to increase the pre-contingency power transfer capability of the IMO-controlled grid by improving post-contingency IMO-controlled grid performance
The arming of an SPS achieves this by deliberately and automatically initiating action so as to respect post-contingency security requirements upon the occurrence of recognized contingencies or upon detection of changes to IMO-controlled grid parameters.
Historically installed as lower cost alternative to transmission connection/network upgrade
14 Jan 2004
Market Operations Standing Committee

5. Market Operations Standing Committee
SPS Terminology
SPS Arming: the SPS has been “turned on” and facilities connected to the SPS could be subject to the automated action associated with the SPS
SPS Activation: applicable contingency or applicable change in grid conditions has occurred, and automated action has been activated (e.g. generator or load tripped off)
14 Jan 2004
Market Operations Standing Committee

6. SPS Statistics (still being compiled)
Number of SPSs in Ontario
Generation Rejection: 12
Load Rejection: 16
Generation Runback: 3
Shunt capacitor switching: 1
Shunt reactor switching: 10
Cross-tripping: 4
Frequency of arming
Frequency of activation
14 Jan 2004
Market Operations Standing Committee

7. Market Operations Standing Committee
MR-00247
Submitted by OPG; determined by Technical Panel to warrant consideration using the following criteria:
the amendment could potentially reduce market participant’s costs by allowing a market participant with facilities connected to an SPS to better anticipate and manage the risks associated with the use of SPSs
14 Jan 2004
Market Operations Standing Committee

8. Additional Considerations
Operational
Should means of notification be mutually agreeable to SPS owner (typically transmitter) and MP/owner of facility connected to SPS, as these are the entities that would incur cost(s) of implementing means of notification?
14 Jan 2004
Market Operations Standing Committee

9. Additional Considerations
Compensation
MP/owner of facility connected to SPS derives benefit from SPS arming: allowed to operate in manner of their choosing rather than being constrained by IMO
Analogous situation of forced outage of transmission connection does not result in compensation
Compensation costs would be recovered through uplift
14 Jan 2004
Market Operations Standing Committee