A Sample of Seldom Used Tools and other Power Flow Trivia Tracy Rolstad Avista System Planning WECC PWSUG, 14 March 2012 GE Appears to Model One Shunt, but Displays Two Carry Over from Case Read POPULUS Bus: POPULUS (67790) Nom kV: 345.00 Area: PACE (65) Zone: ID NPC (652) 1.0193 pu 351.65 KV 33.60 Deg 0.00 $/MWh 0.000 Mvar 0.000 Mvar ID f1 379.7 MW 9.7 Mvar 379.8 MVA 641.0 MW 87.3 Mvar 646.9 MVA Line Shunts 319.9 MW -1.7 Mvar 319.9 MVA A A A mps A mps A 641.7 MW 87.8 Mvar 647.7 MVA Line Shunts CKT 1 67791 System State 55.3 MW -55.2 Mvar 78.1 MVA 0.7 MW -75.5 Mvar 75.5 MVA A A mps In Service A mps BORAH 60060 1.0137 pu 349.73 KV IDAHO 56.9 MW -52.9 Mvar 77.7 MVA 470.3 MW 0.6 Mvar 470.3 MVA A In Service A mps BORPOP11 0.00 MW 0.00 Mvar ID 1 CKT 2 A A A mps A mps A BORPOP21 CKT 2 CKT 1 67792 POPBRI11 A mps POPBRI21 67793 BRIDGER 60085 1.0500 pu 362.25 KV IDAHO CKT 1 67794 KINPOP11 67795 KINPORT 60190 1.0143 pu 349.94 KV IDAHO CKT 1 CKT 2 BENLOMND 65135 1.0247 pu 353.51 KV CKT 1 TERMINAL 66510 1.0296 pu 355.23 KV Unique Levels of Aggregation • Injection Groups Power plants, conforming load, etc • Substations Collection of buses, loads, generators, etc – Auto extractable with Lat/Long • Interfaces Path Rating catalog – Can contain numerous object elements Use of Aggregation Provides Enhanced Capability • Substation Auto-extract Quasi-GIS capability – Extract into ID, OR, WA borders • Or just ask Zach for his work! • Bubble Diagram Uses interfaces and areas to emulate GE diagram – Super Area used in this… • Will post needed *.aux files and *.pwd files • Custom Case Information Fills need for standard reporting Be l Ta f t D w o r s h a k Hat wa i FORTISBC B.C.HYDRO Load: -30 MW 7840 MW Load: B.C.HYDRO ( 50) Losses: 674 MW SI: Load: 2669 MW Gen: 9810 MW SI: -400 MW WAPA U.M. 48 MW Load: 1816 MW Losses: 114 MONTA NAMW ( 62) 9842 MW ALBERTA ( 54) Losses: 368 MW Gen: 780 MW SI: 31 MW Gen: 11183 MW MONTANA ALBERTA 731 MW FORTISBC ( 52) Losses: 18 MW Load: -42 MW Gen: 54 MW SI: 89 MW WA PA U.M. ( 63) Losses: 6 MW Gen: 3384 MW SI: 1455 MW -399 MW 2300 MW 1253 MW -137 MW PSCOLORADO Load: 24403 MW Load: -99 MW Losses: 1164 MW NO RT H WEST ( 40) 3763 MW SI: 4178 MW Gen: 7121 MW SI: -599 MW 629 MW -41 MW 96 MW -2944 MW 154 MW -791 MW SIERRA Load: PG AND E 2094 MW Losses: 71 MW SIERRA ( 64) 3 MW Load: 29023 MW 3541 MW IDAHO ( 60) Losses: 185 MW Gen: 4355 MW Gen: 29329 MW SI: Load: 7528 MW PSCOLORADO ( 70) Losses: 191 MW IDAHO NORTHWEST 769 MW Gen: 29403 MW SI: -655 MW WAPA R.M. -192 MW Gen: 2037 MW SI: -128 MW Losses: 1036 PG AND E MW ( 30) Load: Gen: 6310 MW SI: 985 MW 37 MW -3 MW 87 MW 31 MW -2 MW PACE Load: 8761 MW Losses: 298 MW PACE ( 65) 3520 MW LADWP Load: NEVADA 372 MW 6565 MW LADWP ( 26) Load: 6128 MW Gen: 5571 MW SI: -648 MW 75 MW Gen: -193 MW 7928 MW SI: -1131 MW NEVADA ( 18) Losses: 91 MW Losses: 421 MW Gen: 4664 MW SI: -2333 MW -135 MW NEW MEXICO Load: 0 MW 2442 MW SOCALIF Load: 24819 MW SI: 418 MW 67 MW Gen: 17048 MW 2598 MW 339 MW -634 MW IMPERIALCA Load: 995 MW IMP ERIA LC Losses: 37 A MW( 2 1 ) 35 MW Gen: 1422 MW SI: -300 MW -15 MW ARIZONA Load: 4776 MW Losses: 107 MW SA NDIEGO ( 22) Gen: -301 MW EL PASO Load: 18650 MW ARIZONA ( 14) Losses: 546 MW Gen: 25656 MW SI: 6460 MW MEXICO-CFE SANDIEGO Load: 2401 MW Gen: 2135 MW SI: -300 MW MEXIC Losses:O -C 35FE MW( 2 0 ) 167 MW Load: 1700 MW EL PASO ( 11) Losses: 67 MW Gen: SI: 966 MW -800 MW WECC Total Gen: 175697 MW Load: 169427 MW Losses: 965 MW 3482 MW SI: -1401 MW 189 MW 60 MW 2322 MW SI: -8263 MW 2723 MW NEW MEXICO ( 10) Losses: 146 MW Gen: 3058 MW 81 MW SOCALIF ( 24) Losses: 492 MW -702 MW 5132 MW WA PA R.M. ( 73) Losses: 193 MW WESTERN ELECTRICITY COORDINATING COUNCIL 2012 HS4A APPROVED OPERATING CASE JANUARY 12, 2012 6261 MW Ranking Importance of Buses or Substations • All lines in service Flow based: MW, MVAr, Net Injections Equipment Count • Contingency Based Violation Count RANK Aggregate Overload – % or MVA Gen or Load Islands N-1-1 Contingencies • How do you know what to simulate? The numbers can be overwhelming – Or perhaps not? • Use the Advanced LODF Tool We will look at Puget’s sensitivities to ALL WECC 500 kV ctgs – Auto insert WECC 500 kV ctgs – Create PSE Limit Monitoring Group – Run Advanced LODF – Examine Results LODF Tool Prediction Is? Flow = -442.3 MW "COVINGT4-RAVER“ And MONITORED BRANCH 40689 42500 2 ! FLOW = 672.8 MW LODF = -12.3 "MAPLE V3-TALBOT N" So…. (-0.123) * (-442.3 MW) + 672.8 MW = 727.2 MW should show up on the MapleV3—Talbot N line. Ugh, signs… YAY! Well? PSE folks, will these outages load up the PSE system? Setting Path Flows and Line Flows to Targets • Tools Used Injection Group(s) – For this example it is an uber-group that is all WECC generation regardless of type, size, etc. Interfaces Line Loading Replicator Creating All WECC Gen Group Line Loading Replicator on Northern Intertie Set Northern Intertie to Zero in 15 seconds Results: Note Use of AGCable Flag Going the other way by 2300 MW Results from this: ~4600 MW Shift Check Overloads and Generation Movement • The line loading replicator is NOT an OPF…no constraints • 15 overloads in base case (max =211%) • 80 overloads in adjusted case (max=216%, same line as above) Questions