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AE2-298 Transition Sort Retool Results -- Qualifies for Expedited Process

v1.00 released 2023-12-14 11:14

Cavett Switch - West Van Wert 69 kV

29.9 MW Capacity / 49.9 MW Energy

Introduction

In accordance with Tariff Part VII, Subpart B, section 304, PJM performed load flow analysis (Transition Sort Retool) on all AE1 through AG1 projects that have met eligibility requirements according to Tariff, Part VII, Subpart B, section 303. The purpose of this study is to determine whether a project would be classified as eligible for the Expedited Process (Fast Lane) or if it would be reprioritized to be studied as part of Transition Cycle #1 (TC1) using the criteria from the Expedited Process Eligibility section of Tariff Part VII, section 304. This is not a System Impact Study report.

Below are the results of the study, how the study was performed, criterion used in the evaluation of the Expedited Process vs. TC1 determination, and next steps in the interconnection process for your project.

Eligible for Expedited Process:

The AE2-298 project has been determined to meet the initial screen to be eligible for the Expedited Process according to the Expedited Process Eligibility requirements in Tariff Part VII, Subpart B, section 304. Though your project initially screens as eligible for the Expedited Process, there are several conditions identified under Tariff Part VII, Subpart B, section 304 (B) that could shift your project from the Expedited Process into TC1. Please see "Expedited Process Rules" below.

Transition Sort Retool Study Process and Criteria:

In order to determine Expedited Process vs. Transition Cycle #1 classification, projects which met the Transition Eligibility requirements from Tariff Part VII, Subpart B, section 303 were studied on the base case model that was used for the original System Impact Study analysis. Both a summer peak and light load load flow analysis were performed. Projects that have cost allocation eligibility or are identified as the first to cause a system violation which requires the need for a Network Upgrade with a total estimated cost greater than $5 million will be reprioritized to Transition Cycle #1. All other projects will be eligible for the expedited procedures set forth in Tariff Part VII, Subpart B, section 304 (B).

Expedited Process Eligibility: OATT Tariff Part VII, section 304:

A project is not eligible for the expedited process if it has cost allocation eligibility or is identified as the first to cause, as determined according to Tariff, Part VI, section 217.3, for a Network Upgrade which has a total estimated cost of greater than $5,000,000. Such cost estimate will be based on Transmission Provider's most recently available data.

Not considered in the Transition Sorting: The cost of the Interconnection Facilities is not considered when determining a project's eligibility for the expedited process. Affected Systems upgrade costs are also not considered in the evaluation.

Transition Sort Retool Results Provided:

This report includes a list of:

  1. the overloaded flowgates (overloaded facilities + contingency pair) that the project contributes towards
  2. other interconnection projects that may also contribute to the overloaded facility, and
  3. the total estimated cost for any required Network Upgrades.

Important to Note: Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.

Next Steps for your project:

Refreshed Retool for Projects in Expedited Process:

After the initial sorting retool, PJM will conduct a refreshed analysis of the projects in the Expedited Process with the Transition Cycle #1 projects lifted from the study case model. After this refreshed analysis (including load flow, short circuit and stability analysis), retooled System Impact Study reports can be delivered to the Project Developers. Once the project's Facilities Study report is completed (and no conditions exist that would require the project to shift to TC1, see "Expedited Process Rules" below), the final GIA will be tendered along with the Facilities Study report.

Expedited Process Rules:

Though your project initially screens to be eligible for the Expedited Process, there are several conditions identified under Tariff Part VII, Subpart B, section 304 (B) that could shift your project into TC1 until the final GIA is tendered.

  • If stability analysis or a sag study is completed during the expedited process, and it is determined that a project has an estimated Network Upgrade cost greater than $5,000,000, the project will be removed from the expedited process and shifted to Transition Cycle #1.
  • If it is determined during the Facilities Study that the cost of a Network Upgrade is now estimated to be greater than $5,000,000, the project will be removed from the expedited process and shifted to Transition Cycle #1.
  • If a project is an uprate (project relies on the Interconnection Facilities of a prior project) whose base project does not qualify for the expedited process, the uprate also will not qualify for the expedited process, regardless of analysis results.
  • If the interconnected Transmission Owner identifies the need for a Network Upgrade due to a violation of their criteria that is in excess of $5M, the project will be removed from the expedited process and shifted to Transition Cycle #1.

General

The Interconnection Customer (IC), has proposed a Solar generating facility located in the AEP zone — Van Wert County, Ohio. The installed facilities will have a total capability of 49.9 MW with 29.9 MW of this output being recognized by PJM as Capacity.

Project Information
Queue Number AE2-298
Project Name Cavett Switch - West Van Wert 69 kV
Developer Name White Trillium Solar, LLC
State Ohio
County Van Wert
Transmission Owner AEP
MFO 49.9 MW
MWE 49.9 MW
MWC 29.9 MW
Fuel Type Solar
Basecase Study Year 2022

Point of Interconnection

AE2-298 will interconnect with the AEP transmission system via a new station cut into the West Van Wert – Cavett Switch 69 kV line.

To accommodate the interconnection on the West Van Wert – Cavett Switch 69 kV line, a new three (3) circuit breaker 69 kV switching station physically configured in a breaker and half bus arrangement but operated as a ring-bus will be constructed.  Installation of associated protection and control equipment, 69 kV line risers, SCADA, and 69 kV revenue metering will also be required.  AEP reserves the right to specify the final acceptable configuration considering design practices, future expansion, and compliance requirements.

It should be noted that addition of an active source on what is now a radial line feeding only loads, may require more than typical upgrades to switching equipment and Protection and Control systems on the AEP facilities feeding the radial line. Detailed review of P&C needs occurs in the Facilities Study phase.

Summer Peak Analysis

The Queue Project was evaluated as a 49.9 MW (Capacity 29.9 MW) injection in the AEP area. Project was evaluated for compliance with applicable reliability planning criteria (PJM, NERC, NERC Regional Reliability Councils, and Transmission Owners). Potential Summer peak period network impacts are listed below:

Important to Note: Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.

Summer Peak Analysis
Area Facility Description Contingency Name Contingency Type DC|AC Initial Loading Final Loading Rating (MVA) Rating Type MVA to Mitigate MW Contribution Details
AEP 05NDELPH-05E SIDE 138.0 kV Ckt 1 line
243051 to 242991 ckt 1
AEP_P4_#10140_05ALLEN 138_H
CONTINGENCY 'AEP_P4_#10140_05ALLEN 138_H'
 OPEN BRANCH FROM BUS 243242 TO BUS 243383 CKT 1   /*05ALLEN      138.0 - 05TILLMA     138.0
 OPEN BRANCH FROM BUS 243242 TO BUS 247864 CKT 1   /*05ALLEN      138.0 - 05LOGTOWN    138.0
 OPEN BRANCH FROM BUS 243383 TO BUS 246265 CKT 1   /*05TILLMA     138.0 - 05TILLMAN     34.5
 OPEN BRANCH FROM BUS 243383 TO BUS 246950 CKT 1   /*05TILLMA     138.0 - 05TIMBSS     138.0
 OPEN BRANCH FROM BUS 246264 TO BUS 247877 CKT 1   /*05ST R14 8    34.5 - 05ST.RD14 SS  34.5
END
Breaker AC 106.91 % 110.76 % 167.0 B 184.97 6.52
AEP 05NDELPH-05E SIDE 138.0 kV Ckt 1 line
243051 to 242991 ckt 1
AEP_P7-1_#11065
CONTINGENCY 'AEP_P7-1_#11065'
 OPEN BRANCH FROM BUS 243242 TO BUS 243383 CKT 1   /*05ALLEN      138.0 - 05TILLMA     138.0
 OPEN BRANCH FROM BUS 243242 TO BUS 247864 CKT 1   /*05ALLEN      138.0 - 05LOGTOWN    138.0
 OPEN BRANCH FROM BUS 243383 TO BUS 246265 CKT 1   /*05TILLMA     138.0 - 05TILLMAN     34.5
 OPEN BRANCH FROM BUS 243383 TO BUS 246950 CKT 1   /*05TILLMA     138.0 - 05TIMBSS     138.0
END
Tower AC 106.9 % 110.75 % 167.0 B 184.95 6.52
AEP 05NDELPH-05E SIDE 138.0 kV Ckt 1 line
243051 to 242991 ckt 1
AEP_P7-1_#10895
CONTINGENCY 'AEP_P7-1_#10895'
 OPEN BRANCH FROM BUS 243242 TO BUS 243330 CKT 1   /*05ALLEN      138.0 - 05LINCOL     138.0
 OPEN BRANCH FROM BUS 243242 TO BUS 243383 CKT 1   /*05ALLEN      138.0 - 05TILLMA     138.0
 OPEN BRANCH FROM BUS 243242 TO BUS 243877 CKT 1   /*05ALLEN      138.0 - 05DAWKNS     138.0
 OPEN BRANCH FROM BUS 243242 TO BUS 247864 CKT 1   /*05ALLEN      138.0 - 05LOGTOWN    138.0
 OPEN BRANCH FROM BUS 243383 TO BUS 246265 CKT 1   /*05TILLMA     138.0 - 05TILLMAN     34.5
 OPEN BRANCH FROM BUS 243383 TO BUS 246950 CKT 1   /*05TILLMA     138.0 - 05TIMBSS     138.0
 OPEN BRANCH FROM BUS 243877 TO BUS 243342 CKT 1   /*05DAWKNS     138.0 - 05MILAN      138.0
END
Tower AC 106.83 % 110.68 % 167.0 B 184.84 6.52
AEP 05NDELPH-05E SIDE 138.0 kV Ckt 1 line
243051 to 242991 ckt 1
AEP_P7-1_#10894
CONTINGENCY 'AEP_P7-1_#10894'
 OPEN BRANCH FROM BUS 243242 TO BUS 247864 CKT 1   /*05ALLEN      138.0 - 05LOGTOWN    138.0
 OPEN BRANCH FROM BUS 246352 TO BUS 246950 CKT 1   /*05HAVILAND2  138.0 - 05TIMBSS     138.0
END
Tower AC 99.9 % 103.75 % 167.0 B 173.26 6.52

Light Load Analysis

At this time light load analysis not required for this project.

System Reinforcements

The table below lists all network upgrades which resolve the identified overloaded facilities in this report.

Important to Note: Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.

Reinforcements previously identified by Transmission Owners for violations on lower voltage facilities are included in this report. Transmission Owner analysis will be updated as part of the Expedited Process and Transition Cycle 1 retools.

System Reinforcements
RTEP ID Title Total Cost
s1563.2 North Delphos-Rockhill 138 kV: Rebuild 15.6 miles of double circuit 138 kV line utilizing 1033 ACSR conductor. $24,500,000
b3036 Haviland-North Delphos 138 kV: Rebuild 15.6 miles of double circuit 138 kV line utilizing 1033 ACSR conductor (296 MVA rating) $24,300,000

Attachments

Conclusion

The Transition Sort load flow retool results indicate that AE2-298 is eligible for the Expedited Process per PJM Tariff Part VII, Subpart B, section 304 (A). See next steps for your project in the "Introduction" section above.