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ETAP: Harmonic Analysis of Power Systems - Step-by-Step Guide by Maliha Siddique, Lab Reports of Computer-Aided Power System Analysis

Balochistan University of Information Technology & Management Sciences (BUITMS)Computer-Aided Power System Analysis

A detailed procedure for conducting harmonic analysis in electrical power systems using the ETAP software. The author, Maliha Siddique, outlines the objective, required tool, and procedure for setting up the power system, connecting transformers, cables, and loads, and running harmonic load flow analysis. figures to illustrate each step and results in the form of load flow analyses, harmonic analyses, waveforms, and spectra.

Typology: Lab Reports

2020/2021

Uploaded on 02/14/2021

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Power System Analysis
Maliha Siddique(41053)
Experiment No 5
Harmonic Analysis in Electrical Power System in ETAP
Objective
➢ To design a power system on ETAP
➢ To analyze the Harmonics of electrical power system on ETAP
Required Tool
➢ ETAP
Procedure
1. Firstly open editor of ETAP. Drag a power grid and open power grid setting and set the
rating and short circuit values. Connect 11kV bus.
Figure 5.1:Power Grid Rating
Figure 5.2:Power Grid Short Circuit Ratings
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pf4
pf5
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Experiment No 5

Harmonic Analysis in Electrical Power System in ETAP

Objective

➢ To design a power system on ETAP ➢ To analyze the Harmonics of electrical power system on ETAP

Required Tool

➢ ETAP

Procedure

  1. Firstly open editor of ETAP. Drag a power grid and open power grid setting and set the rating and short circuit values. Connect 11kV bus. Figure 5. 1 :Power Grid Rating Figure 5. 2 :Power Grid Short Circuit Ratings
  1. Connect a bus providing 11 kV to transformer .Go to transformer settings and set ratings and impedance at typical values. Here transformer is connected to step down the voltage. Also set power rating to 1000MVA. Figure 5. 3 :Transformer Rating Figure 5. 4 :Transformerr Impedance
  1. Set the Harmonics of static load. To check harmonic analyis,click harmonic then select study case editor and select plot.Choose a bus to plot .Run Harmonic Load Flow Analysis. Figure 5. 7 :Static Load Harmonics
  2. Run Load Flow Analysis. Also run harmonic analysis and see the graphs. Figure 5. 8 :One Line Diagram of Load Flow
  3. Connect a lumped load at bus 2 and set MVA to 2.Onwards perform harmonic analysis.

Figure 5. 9 :Lumped Load at Bus 2

  1. Observe the plot of bus 3 which is connected with load after selecting none of transformer and static load harmonics.

Result

Load Flow Analysis with Static Load Figure 5. 10 :Run Load Flow

Spectrum of Bus 2 Figure 5. 14 :Spectrum of Bus 2 Waveform of Bus 2 Figure 5. 15 :Waveform of Bus 2

At Bus 3 connected with Load

Load Flow Analysis

Figure 5. 16 :Load Flow Analysis when connected with Bus

Spectrum of Bus 3

Figure 5. 17 : Spectrum of Bus 3

Waveform of Bus 3

Figure 5. 18 :Spectrum of Bus 3 Load Flow Analysis of Buses Figure 5. 19 :Buses Load Flow Analysis