Post on 03-Jan-2016
description
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Node-breaker model
January 23 2014TSS
J. Gronquist, S. Kincic
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• WECC WSM is a product of the three existing RCO models (RDRC, CMRC, and PNSC)o CIM XML formatted Models
(RDRC & CMRC) & Areva EMS Netmom (PNSC) were merged
o Merged Model required clean-up: removal of duplicate lines & substations, standardization of basic modeling methodology & naming conventions
o Result: West-wide System Model (WSM) Areva EMS Netmom
West-wide System Model (WSM) as example of node-breaker model
PNRC (Areva)
CMRC(ABB)
RDRC(GE Harris)
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West-wide System Model (WSM) - usageoWECC RC (Peak Reliability) run SE every
minute and RTCA every 5 minutes;oNext day operation studies;oNear real time studies as needed;oUsed for update for BPA and CAISO SE
external model;o Providing access to WECC members to
advanced applications; o Post cases in PTI30 and .csv format daily at
www.peakrc.com
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WSM vs. basecase
• Planning Basecase – Cholla 500kV (1-bus:14000)
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WSM vs. basecase (bus number)
• WSM Model – Cholla 500kV (4-busses)
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WSM vs. basecase
• WSM Model – Cholla 500kV (4-busses)
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WSM vs. basecase• WSM Model – Cholla 500kV (4-busses)
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Node-breaker vs. bus-brunch model:
• Node-breaker model is more flexible:o It can represent all operating conditions;o Allows more accurate modeling of RASs (SPS) and
contingencies;o There is usually no convergence problems;o Can easily be benchmarked against measurements;o Event analysis-SE case is saved automatically;o Corrective switching action;o Needs for more frequent studies-renewable resources ;o Dynamic assessment of SOLs;o Stuck breaker;o Lot of base-cases;
• To the right is a redacted detail of what the topology of the 500 kV bus at Grand Coulee
• It’s a Breaker and a Half configuration
• This would be a single bus in a “planning case”
Model Detail
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Planning Case Bus View
Bus: COULEE (40287)Nom kV: 500.00Area: NORTHWEST (40)
Zone: Central Washington (403)
CHIEF JO
CKT 1 COULE R1
BELL BPA
CKT 6
HANFORD CKT 1
MS
SCHULTZ CKT 1
MS
CKT 2
MS
COULEE19
COULEE19
CKT 1
COULEE20
COULEE20
CKT 1
COULEE21
COULEE21
CKT 1
COULEE22
COULEE22
CKT 1
COULEE23
COULEE23
CKT 1
COULEE24
COULEE24
CKT 1
COULEES2
CKT 1
A
M VA
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
A
Am ps
COULEE
1.0800 pu
540.00 KV 59.94 Deg 0.00 $/MWh
0.00 MW 0.00 Mvar
218.6 MW 22.8 Mvar
219.8 MVA
402331.0800 pu
540.00 KV
40288
37.4 MW 143.0 Mvar
147.8 MVA
400911.0893 pu
544.65 KV
1244.3 MW 34.0 Mvar
1244.7 MVA
404991.0791 pu
539.53 KV
1264.9 MW 77.6 Mvar
1267.3 MVA
40957
1.0813 pu540.66 KV
1264.9 MW 77.6 Mvar
1267.3 MVA
41739
0.0 MW 0.3 Mvar
0.3 MVA
40291
1.0035 pu 15.05 KV
41740
545.0 MW 38.1 Mvar
546.3 MVA
402931.0198 pu 15.30 KV
41741
549.9 MW 36.8 Mvar
551.2 MVA
402951.0197 pu 15.30 KV
41742
615.3 MW 48.6 Mvar
617.2 MVA
402961.0018 pu 15.03 KV
41743
629.9 MW 52.5 Mvar
632.1 MVA
402971.0013 pu
15.02 KV
41744
629.9 MW 52.5 Mvar
632.1 MVA
402981.0013 pu
15.02 KV
1.0476 tap
548.0 MW 9.4 Mvar
548.1 MVA
413571.0342 pu
237.87 KV
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• Now what happens when Line A is taken out of service?
Breaker a4 Out for Maintenance
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Invalid Contingency SimulationsExample 2
Line D isolated from Line B and Line C
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• PSLF to read WSM in node breaker format in V19;• PSLF to match .dyd file to WSM using EMS names;
PSLF
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WSM vs. basecase (WSM in PSLF)
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• Model Update Process:o WECC RC Modeling Engineers use the Alstom E-terrasource
modeling tool to build (RC’s BCCS)o Each modeler works in their own independent workspaces
Allows for parallel modeling - can have different models & projects loaded
Avoids the issue of shared resources Avoids the risk of “one-corrupts-all” Avoids the need for close-coordination of work
(e.g. when performing validation, model export)o Each modeler begins with the latest Model Authority Set – MAS
(most recent model “basecase”) to create their projectso Model Integrator integrates the projects
together, validates, and create a new MAS
Building node-breaker model
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Modeling in E-terrasource
Network ParameterData
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Modeling in E-terrasource (GUI)
Node ConnectivityData
Node 900C
Node 900D
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Modeling in E-terrasource (GUI)Graphical Modeler
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• Model Export Formats:o PTI Raw File Format
Mapping done via Alstom Translation Table Mapping, manually maintained by WECC RC Modeling Staff
o Alstom Netmom Savecaseo CIM version 12o Powerworld CSV File Format
** WSM is available to signatories of the WSM License Agreement or the Universal NDA
West-wide System Model (WSM)
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• Running state estimation once every minute results in continuous model validation;
• Comparing measurements (kV, MW, MVARs) to powerflow solution;
• Peak Reliability has 24x7 monitoring support of the State Estimator solution quality;
Continuous Model Validation
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• System event: Arlington plant trip and loss of Palo Verde unit on 04/07/2012
• Differences:o Some difference in in initial conditions;o Differences in power flow data;o No plant load in WSM;o Not all units are matched in .dyd file;o Composite load model used with base-case;o WSM in TSAT and base-case in PSLF;
Model Validation-Dynamic
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Generator active power (MW)
Time (sec)
10.00 12.00 14.00 16.00 18.00 20.00 1100
1200
1300
1400
1500
1600
Progress update: dynamic
Generator active power (MW)
Time (sec)
10.00 12.00 14.00 16.00 18.00 20.00 140.00
144.40
148.80
153.20
157.60
162.00
Generator terminal voltage (pu)
Time (sec)
10.00 12.00 14.00 16.00 18.00 20.00 1.00
1.01
1.02
1.02
1.03
1.04
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Progress update: dynamicGenerator active power (MW)
Time (sec)
10.00 12.00 14.00 16.00 18.00 20.00 1130
1144
1158
1172
1186
1200
Generator terminal voltage (pu)
Time (sec)
10.00 12.00 14.00 16.00 18.00 20.00 0.99
1.00
1.00
1.01
1.01
1.02
Questions?