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(1)

ETAP 5.0

ETAP 5.0

User-Defined Dynamic

Models (UDM)

(2)

UDM

• UDM is a tool that allows a client to create

his own dynamic models.

Network

Governor UDM

Exciter UDM

Generator

(3)

Power System Dynamic

Models

• Energy Conversion Models

- Synchronous Machine Models

- Induction Machine Models

• Controller Models

- Turbine/Governor Models

- Exciter/AVR Models

(4)

ETAP Dynamic Model

Library

• Having Most Popular IEEE Standard Models

• Cannot Cover All Types of Models

(5)

Benefits of Using UDM

• Create Client Own Dynamic Models

• Flexible to Update or Revise Existing Models

• Shorten Development Time Cycle

(6)

How UDM Works with

ETAP(1)

• Using ETAP Library Models (Built-in)

(7)

How UDM Works with

ETAP(2)

• Using UDM

t = t +

∆t

Input Interface

Governor UDM

Exciter UDM

PSS UDM

Output Interface

UDM Engine

(8)

How to Create UDM File

• Using SimuLink(MatLab) Interface to Create

Transfer Block Diagrams

• Using ETAP GUI (Future)

SimuLink

Interface

ETAP

GUI

UDM

Compiler

UDM File

UDM Transfer

Block Diagram

(9)

Create UDM Transfer Block

Diagram Using Simulink (1)

• Manufacturer Governor/Exciter Control Block Diagram

(10)

Create UDM Transfer Block Diagram Using

Simulink (2)

(11)

Create UDM Transfer Block Diagram Using

Simulink (3)

(12)

The Rules for Using

SimuLink in ETAP(1)

(13)

The Rules for Using

SimuLink in ETAP(2)

• Key Words for UDM Input/Output Variable Names

in SimuLink

(14)

The Rules for Using

SimuLink in ETAP(3)

• Key Words for UDM Input/Output Variable Names

in SimuLink

(15)

The Rules for Using

SimuLink in ETAP(3)

• Key Words for UDM Input/Output Variable Names

in SimuLink

(16)

How to Use UDM (1)

• Save UDM Files to UDM Folder Under

PowerStation

(17)

How to Use UDM (2)

(18)

How to Use UDM (3)

• Compile UDM File

(19)

How to Use UDM (4)

• Select Initialization Method

– Initializing State Variables of UDM Transfer Blocks According to

Operation Conditions

– ‘Direct’ Method

• Solve an Algebra Equation

• Suitable for a Single Integrator Model

• Take Less Time

(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

(21)

How to Use UDM (6)

• Compile UDM Template File to Equation File

Click ‘Compile’ Button to Open UDM System Data Editor

(22)

How to Use UDM (7)

• Test UDM

(23)

How to Use UDM (8)

• Test Type and System

Governor UDM

Exciter UDM

Generator

Line

(24)

How to Use UDM (9)

• Test Results

(25)

How to Use UDM (10)

• Close UDM Editor

References

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