1 ) INTRODUCTION – HARMONIC LAOD FLOW EVALUATION SOFTWARE3
installment payments on your POWER PROGRAM HARMONICS4
2 . 1 Idea of Power Program Harmonics4
2 . 1 . 1Fourier Series and Harmonics4
2 . 1 . a couple of Distortion Indices6
2 . 1 . 3 Characteristics of Harmonics in Power Systems7
installment payments on your 2 HARMONIC SOURCES8
2 . 3 A RESULT OF HARMONICS9
installment payments on your 3. one particular Thermal deficits in harmonic environment10
installment payments on your 3. 2 Effects upon power program equipment10
2 . 3. several Capacitor banks10
2 . several. 4 Transformers11
2 . a few. 5 Rotating machines11
several. HARMONIC INSERT FLOW ANALYSIS12
3. you LOAD CIRCULATION ANALYSIS12
several. 1 . 1 Load stream problem formulation12
3. 1 ) 2 Backwards forward mop method14
3. 2THREE STAGE HARMONIC ANALYSIS17
3. 2 . 1 Parts model18
several. 2 . 2 Algorithm18
four. INTERNAL OPERATING OF HARMONIC LOAD CIRCULATION ANALYSIS SOFTWARE21
1 . Display and control using Aesthetic C++6. 021
2 . Jogging Analysis employing C++ language21
4. 1CHOICE OF SOFTWARE - VISUAL C++ 6. zero & C++ LANGUAGE21
1 ) Visual C++ 6. 021
2 . C++ language22
4. 2IMPLEMENTATION OF HARMONIC ANALYSIS SOFTWARE23
5. 2 . one particular The GUI: 23
List of classes and the member adjustable and functions23
The view and usage of GUI visible to user –27
An example of doing work of GUI and adding elements30
some. 2 . two The main history code as well as flow of control32
4. 3 Plan Flow33
four. 4 Computer software testing of your sample program: 35
a few. Conclusion39
5. Further work/improvement40
List of Equations43
1 . INTRODUCTION – HARMONIC LAOD FLOW EXAMINATION SOFTWARE
Electric power Systems of today are very huge, complex connected with each other network of varied components. Main components of a power system can be subdivided into: a. Generation
m. Transmission and Sub transmitting
Conventional ac electric power devices are designed to work with sinusoidal voltages and currents. Nevertheless , nonlinear and electronically switched loads pose steady point out ac volts and current waveforms. It is crucial to calculate these effects for secure and trustworthy operation with the power program. Periodically distorted waveforms may be studied simply by examining the harmonic components of the waveforms. The text right here presents approach to 3 – phase harmonic analysis for industrial syndication systems with a personal computer using the harmonic analysis application. This software program uses C++ for analysis and Visible C++ structured GUI as front end. This performs next analyses. 2. Load Flow Analysis
5. 3 – Phase Harmonic Analysis
The software allows the user to draw and model a distribution network and input the being injected harmonic currents. It performs load flow analysis applying backward- frontward sweep method. Same method is used for 3- phase harmonic analysis. Finally harmonic concentration and total harmonic contortion (THD) in various busses is calculated. Objective with this project was to build application for building a 3- phase syndication system and its harmonic load flow examination. Backward- Ahead Sweep method was used due to its efficacy in radial division systems. This software works for a no branched network and can be very easily extended to a complete great network. installment payments on your POWER PROGRAM HARMONICS
A harmonic of a wave can be described as component frequency of the transmission that is a great integer multiple of the critical frequency, i actually. e. in the event the fundamental consistency is f, the harmonics have eq 2f, 3f, 4f... and so forth The harmonics have the real estate that they are most periodic at the fundamental consistency; therefore the sum of harmonics is also routine at that consistency. In relation to electric power systems, harmonics are used to symbolize the multiple frequencies of voltage and current waveforms. The following portions discuss the concept of power system harmonics, their very own sources and effects. installment payments on your 1 Idea of Power System Harmonics
Nonlinear and turned loads and sources could cause distortion of the nominal sinusoidal current and voltage waveform in an air conditioning unit power program. In this...
Bibliography: 1 . Farrenheit. D. Martzloff and Capital t. M. Gruz~", Power Top quality Site Review: Facts, Fiction and Fallacies, ” IEEE Trans. in IA Volume 24, 1988, pp. 1005-1018.
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several. " Building and Ruse of the Propagation of Harmonics in Electric Power Network Component 11: Test Systems and Examples, ” Task Pressure on Harmonics Modeling and Simulation, IEEE Trans on Power Delivery, Vol. 10, No . one particular, pp. 466-474, Jan. 1996.
8. G. Xia and G. Big t. Heydt, " Harmonic Electrical power Study PartI - Ingredients and Answer, ” IEEE Trans. about PAS, Vol. PAS 101, No . six, June 1982, pp. 1257-1265.
9. G. Xia and G. Big t. Heydt, ‘‘Harmonic Power Study Part II - Rendering and Practical Application, ” IEEE Trans. on PAS, Volume. PAS 101, No . six, June 1982, pp. 1266-1270.
11. G. T. Heydt and A. W. Galli, " Transitive Power Quality Problem Reviewed Using Wavelet, ” IEEE Trans. about PWRD, Vol. 12, Number 2, Interest. 1997, pp. 908-915.
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