Download Generator Unit Data

Attachment A
Generator Unit Data
In order to establish an interconnection plan that will be consistent with Company and ERCOT
criteria, the Customer shall submit specific information regarding the electrical characteristics of
each generating unit during the initial planning stages of the project. The required forms are
contained in the following five sheets. Company will furnish typical generator for planning
purposes if requested.
The generator excitation system response ratio shall not be less than 0.5 (five-tenths).
The generator shall have a short circuit ratio of not less than 0.5 (five tenths).
In order to regulate a high side voltage consistent with Companys voltage profile needs,
Company recommends that the generator and step up transformer be designed to maintain a
Company specified high side bus voltage up to a power factor of 0.89 lagging or the generating
units leading power factor capability, as appropriate.
The maximum allowable deviation factor of the open circuit terminal voltage wave shall not
exceed 0.1 (one-tenth).
The balanced Telephone Influence Factor (TIF) shall not exceed 30 (thirty). The residual TIF
shall not exceed 30 (thirty).
The generator shall be capable of withstanding, without damage, the effects of continuous
unbalance corresponding to a negative phase sequence current of 10%, providing rated KVA is
not exceeded, and the maximum current does not exceed 105% of the rated current in any phase.
Generator Step Up Transformer
Customer will provide all generator step up transformers that Company and Customer agree are
necessary to connect Customer's generators with Company's transmission system. Customer
shall provide the data needed for Company to model such step up transformers. The high side
connection of the generator step up transformer shall be wye grounded.
The generator step-up transformers electrical design characteristics shall insure the ability of
Customers generators to meet the ERCOT Operating Guides requirements.
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Attachment A
TURBINE - GENERATOR DATA
STATION AND UNIT # ____________________________
YEAR INSTALLED _________
MANUFACTURER ________________________________
P.O. # ____________________
TURBINE NO. __________________________ TYPE: STEAM REHEAT _____ NON REHEAT ____
COMBUSTION TURBINE _________
RATED TURBINE KW
OIL _____________________________
COAL _____________________________
GAS ____________________________
NUCLEAR _________________________
RATED PSIG ___________________________
SPEED _____________________________
RATED GENERATOR KV __________________________
RATED GENERATOR MVA __________________________
RATED POWER FACTOR ___________________________
NET NW CAPABILITY __________@ 40 0 F ____________@ 100 0 F (Rated Output & Power Factor Less
Auxiliaries)
(TURBINE)
SHORT CIRCUIT RATIO ____________________________
FULL-LOAD FIELD AMPERES @ RATED P.F. ____________________________
FIELD RESISTANCE (OHMS) ___________________________________________
TEMP COEFFICIENT ____________________________________________
UNIT WR2 (Lbs-Ft2) _________________________________ (Combined Turbine-Generator)
H CONSTANT ______________________________________ (Combined Turbine-Generator)
VOLTAGE REGULATOR TYPE _________________________________________
EXCITER
TYPE ____________________________
KW RATING ______________________
VOLTAGE RESPONSE RATIO ___________________________________________
% SPEED REGULATION _______________________________________________
SATURATION CURVE NO. _____________________________________________ (Supply 1 Copy)
VEE CURVE NO. ______________________________________________________ (Supply 1 Copy)
CAPABILITY CURVE NO. ______________________________________________ (Supply 1 Copy)
EXPECTED TURBINE KW OUTPUT VS. AMBIENT
AIR TEMPERATURE CURVE NO. ________________________________________ (Supply 1 Copy)
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Attachment A
GENERATOR CONSTANTS FOR TRANSIENT STABILITY STUDIES
STATION AND UNIT __________________________________
REACTANCES: percent, based on rated MVA, KV
SYNCHRONOUS (Xd)
SYNCHRONOUS (Xq)
TRANSIENT (Xdi), (at rated current) (unsat)
TRANSIENT (Xdv), (at rated voltage) (sat)
TRANSIENT (Xqi)
TRANSIENT (Xqv)
SUB-TRANSIENT (Xdi)
SUB-TRANSIENT (Xdv)
SUB-TRANSIENT (Xqi)
SUB-TRANSIENT (Xqv)
NEGATIVE-PHASE-SEQUENCE (X2), (at rated voltage)
ZERO-PHASE-SEQUENCE (xo), (at rated voltage)
LEAKAGE REACTANCE (X ), (at rated voltage)
POTIER REACTANCE (Xp)
ARMATURE RESISTANCE, OHMS PER PHASE
TIME CONSTANTS: Seconds
Open Circuit (Tdo)
Open Circuit (Tqo)
Open Circuit (Tdo)
Open Circuit (Tqo)
SATURATION FACTORS:
S1.0 (@ Rated Terminal Volts)
S1.2 (@ 120% of Rated Terminal Volts)
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Attachment A
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Attachment A
GENERATION STEP-UP TRANSFORMER DATA
STATION AND UNIT # _________________________________________________________
YEAR INSTALLED ___________________
MANUFACTURER _________________________________________
RATED KVA
P.O. # ________________________
H. WINDING
X WINDING
Y WINDING
55 C Rise
____________
_____________
_____________
65OC Rise
____________
_____________
_____________
O
TYPE _____________________________________
PHASE ____________________________________
H WINDING VOLTAGES AND BIL
(INCLUDE ALL TAPS)
CYCLES _________________________________
____________________________________________________________
X WINDING VOLTAGES AND BIL _____________________________________________________________
Y WINDING VOLTAGES AND BIL _____________________________________________________________
% EXCITING CURRENT AT 100% RATED VOLTAGE _____________________________________________
IMPEDANCE _____________________________ % ON ___________________________________ MVA BASE
WINDING RESISTANCE
H ___________________
X ___________________
Y ___________________
CURRENT TRANSFORMERS
H Winding _______________________________
X Winding _______________________________
Y Winding _______________________________
Neutral
________________________________
PRESENT TAP SETTING:
H Winding _______________________________
X Winding _______________________________
Y Winding _______________________________
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Attachment A
DATA SPEED GOVERNOR
Provide the data constants required for your speed governor and steam turbine systems based on the above
generalized block diagram. If your machine cannot be represented by the above block diagram, include a block
diagram and the necessary data constants.
SPEED GOVERNOR CONSTANTS
STEAM TURBINE CONSTANTS
K
T4 _________________________
________________________
T1 _________________________
T5 _________________________
T2 _________________________
T6 _________________________
T3 _________________________
T7 _________________________
U0 _________________________
K1 _________________________
Uc _________________________
Pmax ________________________
Pmin
________________________
K2 _________________________
K3 _________________________
K4 _________________________
Note: If your governor has the fast
valving feature, provide the necessary
data.
K5 _________________________
K6 _________________________
K7 _________________________
K8 _________________________
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Attachment A
EXCITER DATA
IEEE EXCITER TYPE*
DATA
CONSTANTS
K
K
K
K
K
K
K
K
1
2
3
4
8
A
C
E
F
I
P
R
V
S
MAX
S
0.75MAX
T
T
T
T
T
T
T
T
A
B
C
E
F1
F2
R
RH
V
V
V
V
V
V
BMAX
EMAX
EMIN
CMAX
RMAX
RMIN
*Fill in column of applicable data constants for the IEEE Exciter type corresponding to your machine.
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