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ETAP 5.0ETAP 5.0
Copyright 2003 Operation Technology, Inc.
User-Defined DynamicModels (UDM)
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 2
UDM
• UDM is a tool that allows a client to create his own dynamic models.
Network
Governor UDM
Exciter UDM
Generator
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 3
Power System Dynamic Models• Energy Conversion Models
- Synchronous Machine Models
- Induction Machine Models
• Controller Models
- Turbine/Governor Models
- Exciter/AVR Models
- Power System Stabilizer (PSS) Modes
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 4
ETAP Dynamic Model Library• Having Most Popular IEEE Standard Models
• Cannot Cover All Types of Models
• Difficult to Update Existing Models
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 5
Benefits of Using UDM
• Create Client Own Dynamic Models
• Flexible to Update or Revise Existing Models
• Shorten Development Time Cycle
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 6
How UDM Works with ETAP(1)• Using ETAP Library Models (Built-in)
t = t + ∆t
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 7
How UDM Works with ETAP(2)• Using UDM
t = t + ∆t
Input Interface
Governor UDM
Exciter UDM
PSS UDM
Output Interface
UDM Engine
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 8
How to Create UDM File• Using SimuLink(MatLab) Interface to Create
Transfer Block Diagrams
• Using ETAP GUI (Future)
SimuLinkInterface
ETAPGUI
UDMCompiler
UDM File
UDM TransferBlock Diagram
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 9
Create UDM Transfer Block Diagram Using Simulink (1)• Manufacturer Governor/Exciter Control Block Diagram
Example: GE Exciter/AVR IEEE Type AC7B Model
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 10
Create UDM Transfer Block Diagram Using Simulink (2)• Simulink Transfer Function Block Diagram (IEEE Exciter Type AC7B)
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 11
Create UDM Transfer Block Diagram Using Simulink (3)
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 12
The Rules for Using SimuLink in ETAP(1)• Recognized SimuLink Blocks
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 13
The Rules for Using SimuLink in ETAP(2)• Key Words for UDM Input/Output Variable Names
in SimuLink
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 14
The Rules for Using SimuLink in ETAP(3)• Key Words for UDM Input/Output Variable Names
in SimuLink
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 15
The Rules for Using SimuLink in ETAP(3)• Key Words for UDM Input/Output Variable Names
in SimuLink
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 16
How to Use UDM (1)• Save UDM Files to UDM Folder Under
PowerStation
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 17
How to Use UDM (2)• Load UDM Files in ETAP Generator Editor
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 18
How to Use UDM (3)• Compile UDM File
Click ‘Compile UDM’ Button to Open UDM Compile Editor
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 19
How to Use UDM (4)• Select Initialization Method
– Initializing State Variables of UDM Transfer Blocks According toOperation Conditions
– ‘Direct’ Method
• Solve an Algebra Equation
• Suitable for a Single Integrator Model
• Take Less Time
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 20
How to Use UDM (5)• Select Initialization Method
– ‘Iterative’ Method
• Solve a Set of Differential Equations
• Suitable for a Multi-Integrators Model
• Take Longer Time
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 21
How to Use UDM (6)• Compile UDM Template File to Equation File
Click ‘Compile’ Button to Open UDM System Data Editor
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 22
How to Use UDM (7)
• Test UDMClick ‘Test Model’ Button to Open Test Mode Editor
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 23
How to Use UDM (8)
• Test Type and System
Governor UDM
Exciter UDM
GeneratorLine
Load
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 24
How to Use UDM (9)• Test Results
Copyright 2003 Operation Technology, Inc. – Workshop Notes: User-Defined Dynamic Models Slide 25
How to Use UDM (10)
• Close UDM Editor
Ready to Run Transient Stability Analysis
