ETAP - parameter estimation

1. © 1996-2009 Operation Technology, Inc. – Workshop Notes: Parameter Estimation
Parameter Estimation

2. Slide 2© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Induction Machine Models(1)
• Equivalent Circuit Model
Rs
Xm
Xr
Xs
Rr/s
Rs
Xm
Xr2Xr1
Rr1/s
Xs
Rr2/s
Single Cage
Double Cage

3. Slide 3© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Induction Machine Models(2)
• Static-State Study Model
Motor Acceleration Analysis
• Dynamic Study Model
Transient Stability Analysis
)(sZIV eq

EsTjIXXjE
dt
Ed
T
EIXjRV
s
s



00 )(
)(

4. Slide 4© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Induction Machine Models(3)
• Short-Circuit Study Model
Short-Circuit Current Contribution
• The Analysis Models Related to Motor
Circuit Parameters
X
E
Isc

5. Slide 5© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Parameter Estimation
Methods
• On-Line Estimation
• Off-Line Estimation
Parameter
Estimator
Measurements
(Speed, I, V)
Parameter
Estimator
Nameplate Data
(Characteristics)

6. Slide 6© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
ETAP Parameter Estimation
Module (PE)
• Using Nameplate Data or Motor
Characteristics Curves
• Applicable for Single Cage Circuit Model

7. Slide 7© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
How to Use PE (1)
• Prepare Input Data from Motor Nameplate
Full-Load: IFL, sFL, PFFL, EFFFL
Locked-Rotor: ILR, PFLR, TLR
Max Torque: Tmax

8. Slide 8© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
How to Use PE (2)
• Prepare Input Data from Motor
Characteristics Curves

9. Slide 9© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
How to Use PE (3)
• PE Module Editor

10. Slide 10© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
How to Use PE (4)
• Set Proper Solution Parameters

11. Slide 11© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Parameter Estimation
Results

12. Slide 12© 1996-2009 Operation Technology, Inc. - Workshop Notes: Parameter Estimation
Update Motor Data