COMMENT FOR 2020-2021 Draft Final Regional Transmission Plan, Comments due COB 10/20/21

Submitted Oct. 18, 2021, 10:07 a.m.




OVERVIEW

It is a great plan. Good Job! Most are suggested minor edits with one technical findings regarding TPL-001-4, Category P2.

Edits on language

Lines 75, 165:  who are the Enrolled Parties, are they different than Association of Members or Members (in line 188)? We may need to make it a bit clear to the reader.

Line 179-180:  Recommending adding the word “However” or “On the other hand” in front of the last sentence on line 179:  “However, a project that is more regional in nature may both increase the ability to serve native load as well as influence a larger transmission path.”  [Without the word “However” readers may be confused by the term “regional significance” as defined above.]

Lines 273-278: remove space between the lines.  The last sentence in line 273 should read “…. Identified in Table 1.”

Line 323: change “reduce” to “reduce or increase”. Increasing the reactive power is needed for a loss of reactive resources.

Line 340 – Selection of Projects

We may want to explain the method of selecting these transmission projects in the studies to determine how firm they are.  For instance, are they already funded if the projects are modeled as “in-service”?

Line 506 – Delete “It makes sense that”

Thermal excursions depend not only on thermal ratings of conductors but also the loading of the system.  Even though Facility is rated higher in winter than summer, but so does the load of systems with winter peak load.  It is not the case here; however, in some cases we might see more thermal loading exceeding in winter than in summer.

Line 555: suggest modifying the entire sentence as:  “In summary, Regional combinations {03, 04, 05} resulted in the fewest violations and warrant further scrutiny”  Delete spaces for lines 556 and 557.

On page 40:  the fine prints in the ”PCM to PF Data Quality Issues” table are blurry.

Edits on Graphics

No response submitted.

Technical Findings

Line 698 – Per TPL-001-4, Table 1 on page 8, P2 is considered under “Single Contingency” Category.

Should P2 be ranked higher than P4, P5 and P7 in Table 3 since it is “a single piece of equipment out of service”?

Needs more of the following:

No response submitted.

General

No response submitted.

Interregional Analysis

No response submitted.

Open

No response submitted.