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ETAP

(Electrical Transient Analyzer

Program)

By:

VeereshV eereshV eereshV eeresh

AndAndAndAnd

JitenderJitenderJitenderJitender

Key Design Concepts:

• Virtual Reality Operation

• Total Integration of Data

• Simplicity in Data Entry

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Modules:

• Load Flow Analysis

• Unbalanced Load Flow Analysis

• Short Circuit Analysis

• Motor Acceleration Analysis

• Harmonic Analysis

• Transient Analysis

• Optimal Power Flow Analysis

• Reliability Assessment

• Capacitor Placement

• DC Load Flow Analysis

• DC Short Circuit Analysis

• Battery Sizing Discharge

ETAP Interface

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Project Editor

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Building a One-Line Diagram

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Composite Network – Network 2

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Network 3

Load Flow Analysis Calculation Methods

• Newton-Raphson Method

• Fast-Decoupled Method

• Accelerated Gauss-Seidel Method

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Load Flow Analysis Toolbar

Load Flow Study Case Editor – Info page

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Loading Page

Adjustment Page

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Alert Page

Load Flow Result on

O.L.D.

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Load Flow Display Options

Output Reports

• Load flow calculation results are reported both on the one-line diagram and in the Crystal Reports format.

• The Report Manager can be accessed from the Load Flow toolbar.

• The Report Manager allows selecting formats available for different portions of the report and view it via Crystal Reports.

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Load Flow Report Manager

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Short Circuit Analysis

• Analyzes the effect of 3-phase, line-to-ground, line-to-line, and line-to-line-to-ground faults

• Two options for toolbars, ANSI and IEC standard

ANSI Toolbar

• 3-Phase Faults - Device Duty

• 3-Phase Faults - 30 Cycle Network

• LG, LL, LLG, & 3-Phase Faults - ½ Cycle

• LG, LL, LLG, & 3-Phase Faults - 1.5 to 4 Cycle

• LG, LL, LLG, & 3-Phase Faults - 30 Cycle

• Arc Flash Hazard Calculation

• Short-Circuit Display Options

• Alert View

• Short-Circuit Report Manager

• Halt Current Calculation

• Get Online Data

• Get Online Data

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IEC Short Circuit Toolbar

• 3-Phase Faults - Device Duty (IEC60909)

• LG, LL, LLG, & 3-Phase Faults (IEC 60909)

• 3-Phase Faults - Transient Study (IEC 363)

• Short-Circuit Display Options

• Arc Flash Hazard Calculation

• Alert View

• Short-Circuit Report Manager

• Short Circuit Plots

• Halt Current Calculation

• Get Online Data

• Get Archived Data

Study Case Editor

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Results – Display options

• The way which the results appear on the O.L.D. can be modified using Display options.

• For the Short Circuit Analysis mode there are two possible display options based on the method followed for the analysis –IEC or ANSI.

Output Report

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Motor Acceleration Analysis

• Dynamic Motor

Acceleration

• Static Motor Starting

Study Case Editor

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Motor Starting Time-Slider

• Once a motor starting study is completed, the Motor Starting Time-Slider, will appear next to the Configuration & Mode Toolbar.

• The slider ranges from zero to the total simulation time.

• Initially, the reference pointer is at the far left, corresponding to t = 0 seconds.

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Motor Starting Plots and Plot Display

Motor Acceleration Analysis Output on

O.L.D.

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Motor Starting Output Reports

Harmonic Analysis

This module has two

analytical methods

• Harmonic Load

Flow

• Harmonic

Frequency Scan

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Harmonic Analysis Study Case Editor

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Harmonic Load Flow Slider

This slider has three

sections. They are:

• Total

• 1 (fundamental

frequency)

• h (a harmonic order

from 2 to 73).

Harmonic Frequency Scan Slider

Harmonic Frequency Scan

Slider displays the magnitude

and phase angle of the bus

driving point impedance for

the selected frequency. Only

those buses, which are

selected in the Harmonic

Study Case Editor for

plotting, are available to

display.

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Harmonic Analysis Output Reports

Transient Stability Analysis

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Transient Stability Time-Slider

The slider ranges

from zero to the

total simulation

time. Initially, the

reference pointer

is at the far left,

corresponding to t

= 0 seconds.

Transient Stability Study Case Editor

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Transient Stability Output on O.L.D.

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Transient Stability Output Reports

Transient Stability Plots

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Output Plots

References

• ETAP Manual Volume 1 and Volume 2.

• Power System Analysis by Hadi A Saadat for the Problem statements.