SCR760 Preliminary Impact AnalysisSCR TSP Requirement Cost Delivery

760-1

Keep TP current for all new PSS/E releases

$610K - $760K Dec 2012

760-2 Represent Distribution Capacitor Banks on the proper bus in Topology Processor PSS/E case $210K - $260K May 2012

760-3Represent the proper ratings on zero impedance lines in Topology Processor cases

$560K – 720K Mar 2013

760-4Planning should be able to model loads and capacitor banks on the correct PSS/E busses $165K – 205K May 2012

760-5Represent the actual transformer models in the PSS/E cases

$145K - $185K May 2012

760-6 Update IMM and TP to incorporate FACTS devices $230K - $295K Dec 2012

760-7Modify TP to assign valid PSS/E IDs to Breakers/Switches/Series Devices

$105K-$140K Sep 2011

760-8Allow representation of a phase shift for an autotransformer winding in the Topology Processor PSS/E cases $95K - $130K Sep 2011

TOTAL $2.1M - $2.7M

Annual Recurring Cost $535K – $715K

Delivery Plan

Bus Branch Load GenSwiched Shunt XF FACT

Mult-Section Lines Area Owner Totals

Total of DSB Submission

%Size of DSB submission

AEN Add 1 14 1 7 1 24add 1Delete 2 23 3 1 1 30Modify 2 14 16

3 37 6 1 0 22 2 0 0 0 70 263 26.62%AEP Add 8 1 133 8 1 9 1 3 164

Delete 3 5 7 1 1 17Modify 7 2 5 2 16

18 6 133 17 2 10 0 0 6 5 197 2638 7.47%CNP Add 38 165 97 9 26 7 151 493

Delete 93 251 125 9 21 5 504Modify 10 7 6 86 109

141 423 228 18 47 98 0 151 0 0 1106 1833 60.34%CPS Add 13 13

Delete 13 6 19Modify 22 22

0 26 6 0 22 0 0 0 0 0 54 349 15.47%GPL Add 6

Delete 6Modify 2 1 3

0 2 0 13 0 0 0 0 0 0 3 273 1.10%LCRA Add 383 383

Delete 324 324Modify 1 1

0 0 708 0 0 0 0 0 0 0 708 1043 67.88%Oncor Add 253 253

Delete 2 2Modify 0

0 0 0 0 255 0 0 0 0 0 255 5087 5.01%STEC Add 6 3 3 12

Delete 6 16 3 25Modify 4 4

0 12 23 0 0 6 0 0 0 0 41 540 7.59%2434

Topology Processor Results from the 2010 Test case as of 11-23-2010This includes all the PMCRs from pass1, pass2 and pass3.

Notes for Previous Slide

• AEP 133 added load records appears to separate load into Residential, Wholesale, etc to match SSWG case. Do not get removed by SCR.

• LCRA 383 load adds and 324 load deletes appears to be to realign Load ID field to new modeling philosophy. Will be changed in IMM and not necessary to submit as future PMCR

• PMCR’s are not the same as NOMCR’s• NOMCR’s are very detailed xml files• PMCR’s vary from 1 line of data to up to 4 lines of data

Example of PMCR File• <PROJECT>, 30• AEN_TEST_CASE_10SUM_PMCR_FILE,Standard_PMCR,Active,Make sure Autos are 3-winding• <PHASE>,TEST_PMCR,10/8/2010,10/8/2010,• BUS, DELETE,9281,'TRADPOST1',138,1,0,0,9,709,1,0,190• BUS, ADD,9025,'HP_STATC',32,1,0,0,9,709,0.9986,-3.2377,100• LOAD, DELETE,9187,'1',1,9,709,2,0,0,0,0,0,190• LOAD, ADD,9184,'DG',1,9,709,-2.12,0.597,0,0,0,0,400• LOAD, MODIFY,9282,'1',1,9,709,20.324,14.287,0,0,0,0,190• GENERATOR, DELETE,9118,'VC',0,0,110,-80,1.018,0,110,0,9999,0,0,0,1,100,0,0,1,1• BRANCH, DELETE,7288,-9288,'BC',0,0.0001,0,9999,9999,9999,0,0,0,0,1,0,1,1• FACTS, ADD,1,9025,0,1,0,0,0.9986,100,9999,0.9,1.1,1.2,100,0.05,100,100,0,0,0• TRANSFORMER, ADD,9025,9118,0,'1',1,1,1,0,0,1,'STATC1',1,190,1,,,,,,• 0.0025,0.08,100,,,,,,,,• 1,0,-30,120,120,120,0,0,1.5,0.51,1.5,0.51,33,0,0,0• 1,0,,,,,,,,,,,,,,• TRANSFORMER, MODIFY,9002,9188,0,'1',1,1,1,0,0,2,,1,189,1,,,,,,• 0.00521,0.18106,100,,,,,,,,• 1,13.8,0,139,139,139,0,0,1,1,1.1,0.9,33,0,0,0• 1,0,,,,,,,,,,,,,,• Q

This file contains 10 PMCRS

The effect of SCR 759 and 760 on the number of PMCR’s submitted for 2010 Test

SCR # SCR Description

PMCR Reduction Achieved by

SCR1 Comment

Possible PMCR Reduction

by SCR2

Additional PMCR's considered as reduced by SCR

1 UpgradeTP to PSS/E version32 - Unable to Determine -

2 Distribution Capacitor Banks 231Unable to Determine all 557

PMCR's CNP add Caps + AEP estimate (200)+Add'l Oncor estimate (100)

3 Zero Impedance Line Ratings 118 118

4Associate Loads and Capacitor banks with the correct CNG 17

Unable to Determine all 114 PMCR's CNP add Loads

5 Additional Transformer Data for Planning - Unable to Determine 86 PMCR's CNP Modify XF6 FACTS Devices 7 21 Only 21 in case

7Assign valid PSSE IDs to Breakers/Switches/Series Devices 245 245

8 Phase Shift of Autos For Short Circuit Studies 46 46

SCR 760 Total Number and as percent of 2434 664 27.3% 1187 43.4%

SCR759 - Increase ACLineSegment Length 151 6.2%

Should Not Be Modeled as a Standard PMCR3 44

3PMCR's that were submitted that either should have included in profile or reflect change that needs to also be made in IMM

1Using values that ERCOT was able to determine from submitted PMCR's2Using values as in footnote 1 but including additional PMCR's and estimated non-submitted PMCR's that might be reduced by SCR