Download Power System Stabilizer Tuning Study

Power System Stabilizer Data Collection Form
PSS_Study.doc
Instructions:
3
Complete all entries on the following sheets
4
All attached drawings should be 8.5 x 11”. Larger drawings should be
reduced or copied in segments
5
Refer to the notes on the final page for definitions and to ensure that data
entries are consistent
6
email completed form to [email protected]
1.0
General Information
1.1
Utility/Plant/Unit _____________________, __________________, ___
1.2
Customer Contact
Name:
___________________________
Company: ___________________________
Title:
___________________________
Address:
___________________________
phone#:
___________________________
fax#:
___________________________
E-mail:
___________________________
1.3
Required Delivery Date for Studies
____________
2.0
Generator Information
2.1.
Type ________ (R = Round Rotor, S = Salient Pole)
2.2.
Generator Base Power = __________ MVA (note 1)
2.3.
Power Factor _________________
2.4.
Generator Base Voltage = __________ kV
2.5.
Rated Speed = __________ RPM
2.6.
Rated MVA, Rated Power Factor Field Current = _____ Adc
2.7.
Attach Generator Open Circuit Saturation Curve dwg#______________
2.8.
Field Winding Resistance = _________ ohms @ _________ degrees C
2.9.
Attach generator single line diagram dwg# ________
2.10. Attach generator capability curve dwg# __________
2.11. Attach manufacturer’s data sheets including generator data tabulated
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revised March 20, 2008
Power System Stabilizer Data Collection Form
PSS_Study.doc
below (note 4)
Parameter
Ra
Xd
Xq
Xl
X'd
X'q
X"d
X"q
T'do
T'qo
T"do
T"qo
H
Stator resistance
D-Axis Synchronous Reactance
Q-Axis Synchronous Reactance
Leakage Reactance
D-Axis Transient Reactance
Q-Axis Transient Reactance
D-Axis Sub-Transient Reactance
Q-Axis Sub-Transient Reactance
D-Axis O.C. Transient Time Constant
Q-Axis O.C. Transient Time Constant
D-Axis O.C. Sub-Transient Time Constant
Q-Axis O.C. Sub-Transient Time Constant
Inertia Constant (rotor and turbine total)
wr2
MVA upon which above data is provided
Sbase
3.0
3.1
3.2
3.3
Generator Data Entry Table
Description
Manufacturer’s
Value
Units on
Machine
Nameplate
Base
Pu or ohms
pu
pu
pu
pu
pu
pu
pu
s
s
s
s
MW-s/MVA
or lb-ft2
MVA
Excitation System Data
Type of Excitation System _______
(S=static, D=DC rotating main exciter, A=AC rotating main exciter with
brushes, B=Brushless AC rotating main exciter)
If AC or DC main exciter, supply main exciter saturation curve(s) (DCloaded; AC - no-load AND loaded) , time constant, synchronous
impedance and transient impedance. Done ______
AVR make, model ________________________________
** if stand-alone PSS, supply AVR bulletin
3.4
Exciter or AVR supply voltage source:
Exciter Transformer kVA ___, kV/V ___/___, impedance ____% OR
If PMG supplied, specify PMG frequency, kW, loaded voltage, number of phases
_____________________________
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revised March 20, 2008
Power System Stabilizer Data Collection Form
4.0
Relay Data
4.1
Attach settings for the following relays or list as N/A:
PSS_Study.doc
(24) V/Hz
(40) Loss-of-Excitation
(59) Over-voltage
(81) Over/Under frequency
(78) Out-of-step
(51V, 21) Backup
(76) Exciter overcurrent or overvoltage
(50/51) exciter transformer overcurrent (specify CT ratio) (full static units only)
Other generator or exciter protective relay(s) (Y/N)
4.2
Attach generator three-line diagram including protection PT and CT ratios
dwg _______
5.0
Turbine data:
Minimum load and time available on open circuit/minimum load (thermal units)
________________
Turbine-generator shaft torsional frequencies (round rotor units)
____,____,____ (required data for all round rotor units)
Torsional profile showing which sections (i.e. generator, turbines)
participate in each torsional frequency
Rough zone (gate/MW start/end) (hydro units) _________________________
6.0
Add any other relevant data below
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revised March 20, 2008
Power System Stabilizer Data Collection Form
PSS_Study.doc
7.0
Interconnection Details
7.1
Attach interconnection diagram of generator to local power system
dwg _______
7.2
Specify impedance between generator and point of connection to high
voltage system ____________ pu (note 7)
7.3
Number of parallel units and step-up transformers at this location ___; are
multiple units connected together on the same generator output bus ___?
7.4
Step up transformer (S)hared, (D)edicated LV winding (note 8) ___; MVA
___, % impedance ___; kV/kV ____; connection (e.g. Y-)
Notes on Data Entry
1)
2)
3)
4)
5)
6)
7)
8)
Generator nameplate MVA base (not rated active power)
Rated field current defined as the field current required to produce rated
terminal voltage on the air-gap line (tangent to the un-saturated portion of
the open-circuit field current versus terminal voltage characteristic). This
value is calculated from the manufacturer’s open-circuit saturation graph
and can not be measured.
Rated field voltage defined as the product of the rated field current (see
note 2) and the field winding resistance at a specified temperature (75C
for hydroelectric machines and 100C for thermal machines)
Generator impedance and time constant data must be un-saturated
values. If only saturated values are available, please indicate with an “s”
beside the entered value.
Calibration of input connection of the PSS to the voltage regulator.
Specify the voltage range allowed, input impedance of circuit and transfer
ratio, in terms of voltage applied at PSS output versus terminal voltage
change obtained with the unit operating on open circuit.
Dynamic data for excitation system should be in the form of a
manufacturer’s block diagram of the voltage regulator loop including the
parameters or alternately a simulation data file in a standard format (e.g.
PTI PSS/E dynamic data file). For guidance on the type of block diagram
models which are supported refer to IEEE Standard 421.5-1992, IEEE
Recommended Practice for Excitation System Models for Power System
Stability Studies
Thevenin equivalent impedance seen from generator LV bus for normal
system interconnection expressed in per-unit on a 100 MVA base.
Specify if multiple units are bussed together or are connected to separate
low voltage transformer windings
Page 4
revised March 20, 2008