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Project 2018-01 Canadian-specific Revisions to TPL-007-2

Description:

Start Date: 10/02/2018
End Date: 11/15/2018

Associated Ballots:

Ballot Name Project Standard Pool Open Pool Close Voting Start Voting End
Project 2018-01 Canadian-specific Revisions to TPL-007-2 Project 2018-01 Canadian-specific Revisions to TPL-007-2 IN 1 ST Project 2018-01 Canadian-specific Revisions to TPL-007-2 Project 2018-01 Canadian-specific Revisions to TPL-007-2 10/02/2018 10/31/2018 11/06/2018 11/16/2018
Project 2018-01 Canadian-specific Revisions to TPL-007-2 Implementation Plan IN 1 OT Project 2018-01 Canadian-specific Revisions to TPL-007-2 Implementation Plan 10/02/2018 10/31/2018 11/06/2018 11/16/2018

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Hot Answers

Payam Farahbakhsh, Hydro One Networks, Inc., 1, 11/15/2018

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The proposed language change provides the flexibility to account for the regulatory approval process in Canada. 

RSC no Dominion, Segment(s) 10, 2, 4, 5, 7, 3, 1, 6, 0, 11/14/2018

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Nicolas Turcotte, Hydro-Qu?bec TransEnergie, 1, 10/9/2018

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The proposed language change provides the flexibility to account for the regulatory approval process in Canada. 

Leonard Kula, Independent Electricity System Operator, 2, 10/23/2018

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Junji Yamaguchi, 11/5/2018

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The posted version of “Proposed TPL-007-2 Canadian Variance” has proposed changed to R7 and Part 7.3 as noted above. However, the “Redline to TPL-007-2” version does not have these changes. Please review.

In Manitoba, regulatory approvals are not required for specific capital projects. Therefore the proposed variance is not required in this jurisdiction.

Regulations within Manitoba currently prevent Manitoba Hydro from adopting standards that require construction or enhancement of facilities in Manitoba. Manitoba has no suggestions for a variance that would alleviate this concern. As a result Manitoba Hydro adopted TPL-007 as its own standard (MH-TPL-007-2).

Manitoba Hydro, Segment(s) 5, 3, 6, 1, 8/8/2017

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Constantin Chitescu, Ontario Power Generation Inc., 5, 11/14/2018

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Hot Answers

Payam Farahbakhsh, Hydro One Networks, Inc., 1, 11/15/2018

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The effective geo-electric field depends on the both geomagnetic latitude and earth conductivity.   Both of these factors tend to be larger in Canada compared with most with other places subject to NERC standards so the risk of higher GICs in Canada is higher.  The introduction adequately describes the balance the Canadian variance will achieve: preserving an equivalent level of reliability (e.g. 1-in-100 year event) while allowing the flexibility to use an approach that can be demonstrated to better match Canadian circumstances.

RSC no Dominion, Segment(s) 10, 2, 4, 5, 7, 3, 1, 6, 0, 11/14/2018

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Other Answers

Nicolas Turcotte, Hydro-Qu?bec TransEnergie, 1, 10/9/2018

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The effective geo-electric field depends on the both geomagnetic latitude and earth conductivity.   Both of these factors tend to be larger in Canada compared with most with other places subject to NERC standards so the risk of higher GICs in Canada is higher.  The introduction adequately describes the balance the Canadian variance will achieve: preserving an equivalent level of reliability (e.g. 1-in-100 year event) while allowing the flexibility to use an approach that can be demonstrated to better match Canadian circumstances.

Leonard Kula, Independent Electricity System Operator, 2, 10/23/2018

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Junji Yamaguchi, 11/5/2018

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Manitoba Hydro, Segment(s) 5, 3, 6, 1, 8/8/2017

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Constantin Chitescu, Ontario Power Generation Inc., 5, 11/14/2018

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Hot Answers

Payam Farahbakhsh, Hydro One Networks, Inc., 1, 11/15/2018

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Requiring the methodology and assumptions specified in TPL-007-2 to be used unless the data and sensitivity assessment conditions in the Canadian Variance are both satisfied is sufficiently clear and flexible for Canadian entities while achieving an equivalent level of reliability.

RSC no Dominion, Segment(s) 10, 2, 4, 5, 7, 3, 1, 6, 0, 11/14/2018

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Other Answers

Nicolas Turcotte, Hydro-Qu?bec TransEnergie, 1, 10/9/2018

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Requiring the methodology and assumptions specified in TPL-007-2 to be used unless the data and sensitivity assessment conditions in the Canadian Variance are both satisfied is sufficiently clear and flexible for Canadian entities while achieving an equivalent level of reliability.

Leonard Kula, Independent Electricity System Operator, 2, 10/23/2018

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Junji Yamaguchi, 11/5/2018

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Manitoba Hydro agrees that Attachment 1-CAN allows for alternative methodologies to be used and supports this approach.

Manitoba Hydro is concerned about the precedence of mandating construction for a 1-in-100 year event. NERC TPL-001-4 does not mandate implementation of a CAP for extreme events, typically defined as 1-in-30 or greater.  Manitoba Hydro prefers to set its risk tolerance to be in line with TPL-001-4 and has defined a GMD Planning event at 3 V/km, which corresponds to a 1-in-30 year probability. Manitoba Hydro will determine a CAP for a GMD Planning event. Extreme events of 1-in-50 year (3.5 V/km) and much greater than 1-in-100 years (8 V/km) will be studied in a similar manner as extreme events in TPL-001-4.

Manitoba Hydro, Segment(s) 5, 3, 6, 1, 8/8/2017

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Constantin Chitescu, Ontario Power Generation Inc., 5, 11/14/2018

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Hot Answers

Payam Farahbakhsh, Hydro One Networks, Inc., 1, 11/15/2018

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The technical documents defined in Attachment 1-CAN are a credible source of technically justified information.  Direct measurements (e.g. GIC current, magnetic field) in Canada should be given the highest weighting when assessing technically justified information. 

RSC no Dominion, Segment(s) 10, 2, 4, 5, 7, 3, 1, 6, 0, 11/14/2018

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Other Answers

Nicolas Turcotte, Hydro-Qu?bec TransEnergie, 1, 10/9/2018

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The technical documents defined in Attachment 1-CAN are a credible source of technically justified information.  Direct measurements (e.g. GIC current, magnetic field) in Canada should be given the highest weighting when assessing technically justified information. 

Leonard Kula, Independent Electricity System Operator, 2, 10/23/2018

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Junji Yamaguchi, 11/5/2018

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This would address one of Manitoba Hydro’s original concerns with the standard and not lock the standard to “old” research but allow the latest research/data to be used in assessments.

Manitoba Hydro, Segment(s) 5, 3, 6, 1, 8/8/2017

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Constantin Chitescu, Ontario Power Generation Inc., 5, 11/14/2018

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Hot Answers

The proposed standard could benefit from adding a requirement to review the definition of the alternative benchmark or supplemental GMD events at or prior to the beginning of each standard assessment cycle.  This review would allow the future assessments to leverage the results of ongoing research and consider new information that may be discovered in the future from growing data sets.

Payam Farahbakhsh, Hydro One Networks, Inc., 1, 11/15/2018

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RSC no Dominion, Segment(s) 10, 2, 4, 5, 7, 3, 1, 6, 0, 11/14/2018

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Other Answers

The SDT should consider the impact of the harmonics generated by the GMD eventon the system performance. These were the main cause for the 1989 blackout in Quebec.

Nicolas Turcotte, Hydro-Qu?bec TransEnergie, 1, 10/9/2018

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NA

Leonard Kula, Independent Electricity System Operator, 2, 10/23/2018

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Junji Yamaguchi, 11/5/2018

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There are portions of Attachment 1-CAN that are not related to the assessment methodology and may fit better within the requirements, such as:

Modeling assumptions shall also be clearly documented and technically justified. An entity may

use sensitivity analysis to identify how the assumptions affect the results.

A simplified model may be used to perform a GMD Vulnerability Assessment(s), as long as the

model is more conservative than a more detailed model.

When interpreting assessment results, the entity shall consider the maturity of the modeling,

toolset, and techniques applied.

Additional comments – made during previous rounds of commenting of TPL-007

Manitoba Hydro does not support the supplemental GMD assessment in R8 and associated additional thermal analysis required in TPL-007-2 R9 and R10. The science is still evolving on localized enhancements.

Manitoba Hydro also notes that R12 serves no obvious purpose in meeting the stated objectives or purpose of the standard; the collection of magnetometer data is performed by NRCAN and several Canadian Universities within Canada.

Manitoba Hydro will not be able to adopt this standard as written due to conflicts with local legislation.

Manitoba Hydro, Segment(s) 5, 3, 6, 1, 8/8/2017

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Constantin Chitescu, Ontario Power Generation Inc., 5, 11/14/2018

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