Generator Interconnection Request
Wind Generation Facility Data
Generating Facility Name:
Maximum Export Capability:
MW
1. Simplified One-Line Diagram. This should be similar to Figure below. If it is different, please mark
the difference on the diagram below.
Interconnection
Transmission Line
Collector
System
Equivalent
Main
Transformer(s)
WTG Step-up
Transformer
Wind Turbine
Generator
Equivalent
Point of
Interconnection
WTG
Dynamic Reactive
Device
Fixed Reactive
Device
PF Correction
Capacitors
2. Interconnection Transmission Line.
a) Point of Interconnection (substation/transmission line name):
b) Line voltage =
kV, line rating at 95F ambient =
MVA, and line length
c) R1 =
ohm or
pu on 100 MVA and line kV base (positive sequence)
d) X1 =
ohm or
pu on 100 MVA and line kV base (positive sequence)
e) B1 =
F or
f) R0 =
ohm or
pu on 100 MVA and line kV base (zero sequence)
g) X0 =
ohm or
pu on 100 MVA and line kV base (zero sequence)
h) B0 =
F or
miles
pu on 100 MVA and line kV base (positive sequence)
pu on 100 MVA and line kV base (zero sequence)
3. Main Transformer.
a) Number of main transformers:
Two-Winding Main Transformer Data (if applicable):
b) Rating (OA/FA/FA):
/
/
MVA
c) Nominal Voltage for each winding (Low/High):
/
kV
d) Winding Connections (Low/High): Delta or Wye / Delta or Wye
e) Available fixed tap positions:
/
f) Positive sequence impedance Z1:
g) Zero sequence impedance Z0:
/
/
%,
%,
/
kV
X/R on self-cooled (OA) MVA rating above.
X/R on self-cooled (OA) MVA rating above.
Page 1 of 6
Dated: 2/9/2016
Generator Interconnection Request
Wind Generation Facility Data
Three-Winding Main Transformer Data (if applicable)
h) GSU connection and winding (please attach diagram and mark to reference this form).
H Winding Data
Full load ratings
(i.e. OA/FA/FA)
/
X Winding Data
/
/
MVA
Rated high side voltage
base
/
kV
/
kV
Delta or Wye connected
/
/
Neutral solidly grounded?
(or) Neutral Grounding
Resistor (if applicable)
/
MVA
kV
/
kV
Present Tap Setting
(if applicable)
/
MVA
Delta or Wye connected
Tap positions available
Y Winding Data
/
/
/
Delta or Wye connected
/
/
kV
/
/
/
kV
kV
kV
kV
Ohms
Ohms
Ohms
kV
kV
kV
BIL rating
Three-Winding Main Transformer Impendance Data (if applicable)
H-X Winding Data
Transformer base for
impedances provided
H-Y Winding Data
MVA
X-Y Winding Data
MVA
MVA
Positive sequence impedance Z1
%
X/R
%
X/R
%
X/R
Zero sequence impedance Z0
%
X/R
%
X/R
%
X/R
4. Collector System Equivalent Model.
a) Collector system voltage =
kV
b) Collector system equivalent model rating at 95F ambient =
MVA
c) R1 =
ohm or
pu on 100 MVA and collector kV base (positive sequence)
d) X1 =
ohm or
pu on 100 MVA and collector kV base (positive sequence)
e) B1 =
F or
f) R0 =
ohm or
pu on 100 MVA and collector kV base (zero sequence)
g) X0 =
ohm or
pu on 100 MVA and collector kV base (zero sequence)
h) B0 =
F or
pu on 100 MVA and collector kV base (positive sequence)
pu on 100 MVA and collector kV base (zero sequence)
Page 2 of 6
Dated: 2/9/2016
Generator Interconnection Request
Wind Generation Facility Data
5. Wind-turbine generator (WTG) Step-up Transformers.
a) Number of WTG step-up transformers:
Rating:
MVA
Two-Winding WTG Step-up Transformer Data (if applicable):
b) Nominal Voltage for each winding (Low/High):
/
kV
c) Winding Connections (Low/High): Delta or Wye / Delta or Wye
d) Available taps:
(Fixed or with LTC)
e) Positive sequence impedance (Z1)
%,
f) Zero sequence impedance (Z0)
%,
X/R on MVA rating above.
X/R on MVA rating above.
Three-Winding WTG Step-up Transformer Data (if applicable)
g) GSU connection and winding (please attach diagram and mark to reference this form).
H Winding Data
Full load ratings
(i.e. OA/FA/FA)
Rated high side voltage
base
Tap positions available
Present Tap Setting
(if applicable)
Neutral solidly grounded?
(or) Neutral Grounding
Resistor (if applicable)
BIL rating
/
X Winding Data
/
/
MVA
/
/
MVA
kV
/
/
/
MVA
kV
Delta or Wye connected
/
Y Winding Data
kV
Delta or Wye connected
/
kV
/
/
/
Delta or Wye connected
/
/
kV
/
/
/
kV
kV
kV
kV
Ohms
Ohms
Ohms
kV
kV
kV
Three-Winding WTG Step-up Transformer Impendance Data (if applicable)
H-X Winding Data
Transformer base for
impedances provided
H-Y Winding Data
MVA
X-Y Winding Data
MVA
MVA
Positive sequence impedance Z1
%
X/R
%
X/R
%
X/R
Zero sequence impedance Z0
%
X/R
%
X/R
%
X/R
Page 3 of 6
Dated: 2/9/2016
Generator Interconnection Request
Wind Generation Facility Data
6. WTG Module Data.
a) Number of WTGs:
b) Nameplate Rating (each WTG):
MW
c) Full load rating (each WTG):
MW
Type 1 – Squirrel-cage induction generator
Type 2 – Wound rotor induction machine
with variable rotor resistance
Type 3 – Doubly-fed asynchronous generator
Type 4 – Full converter interface
d) WTG Manufacturer and Model:
e) WTG Type: Choose Type, see box to the right
For Type 1 or Type 2 WTGs:
-
Uncompensated power factor at full load:
-
Power factor correction capacitors at full load:
-
Complete the Interconnection Request application Induction Generator data section.
Mvar
For Type 3 or Type 4 WTGs:
-
Maximum over-excited power factor at full load:
Mvar
-
Maximum under-excited power factor at full load:
-
Control mode (e.g., voltage, power factor, or reactive power):
Mvar
f) Provide the completed PSS/E data sheets for the generic WTG library model(s).
7. Plant Reactive Power Compensation.
Provide the following information for plant-level reactive compensation: Not Applicable
a) Individual fixed shunt reactive device type:
-
Size of each:
×
MVA
b) Dynamic reactive control device (e.g., SVC, STATCOM):
c) Control range at rated Mwoutput:
Mvar (lead and lag)
d) Control mode (e.g., voltage, power factor, reactive power):
e) Regulation point:
f) Describe the overall reactive power control strategy:
g) Provide the completed PSS/E data sheets for the dynamic reactive device library model(s).
Page 4 of 6
Dated: 2/9/2016
Generator Interconnection Request
Wind Generation Facility Data
8. Short Circuit Response of WTG.
a) Provide plots of maximum and minimum short circuit output of wind turbine generator units vs.
MV bus voltage for 0-3 cycles and for 3 cycles +(examples on page 6):
b) Per-unit MV bus voltage at which crowbar is initiated:
c) Equivalent per-unit machine impedance when crowbar is initiated:
9. Short Circuit Contribution of the plant at the Point of Interconnection.
a) Maximum Three Phase Fault Current:
Amps and Duration:
b) Maximum Single Line to Ground Fault* Current:
Amps and Duration:
* Single Line to Ground Fault at the Point of Interconnection with ties to utility open.
10. Harmonic Distortion of the plant at the Point of Interconnection.
a) Total Harmonic Current Distortion:
%
b) Individual harmonic currents through 49th harmonic, in % of fundamental current rating:
2nd
7th
19th
31th
43th
%
%
%
%
%
3rd
11th
23th
35th
47th
%
%
%
%
%
4th
13th
25th
37th
49th
Page 5 of 6
%
%
%
%
%
5th
17th
29th
41th
%
%
%
%
Dated: 2/9/2016
Generator Interconnection Request
Wind Generation Facility Data
Example of Momentary Short Circuit Output
1) Per-Unit Momentary Short Circuit Capability (0-3 cycles) vs. MV bus voltage (MV bus of wind
turbine unit transformer)
Example of Short Circuit Output After 3 Cycles
•
Per-Unit Short Circuit Capability (3 cycles+) vs. MV bus voltage (MV bus of wind turbine unit
transformer)
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Dated: 2/9/2016