Development of a wavelet-based algorithm to detect and determine ...

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Contents Eidesstattliche Erklärung ii 1 Introduction 1 2 Power Quality Recorder Simeas-R 3 2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2.1 Fault recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2.2 Power data recorder . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2.3 Power and frequency recorder . . . . . . . . . . . . . . . . . . . . 6 2.2.4 Event recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3.1 Common interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3.2 Data acquisition units . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 Software (OSCOP P) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.5.1 Application range . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 I
2.5.2 Software modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 SIMEAS R in the laboratory 14 3.1 SIMEAS R configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 Laboratory use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4 IEEE Standard Common Format for Transient Data Exchange (COMTRADE) for Power Systems 18 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2 Sources of transient data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.3 Files for data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3.1 Header file (xxx...xxx.HDR) . . . . . . . . . . . . . . . . . . . . . . 20 4.3.2 Configuration file (xxx...xxx.CFG) . . . . . . . . . . . . . . . . . . 21 4.3.3 Data file (xxx...xxx.DAT) . . . . . . . . . . . . . . . . . . . . . . . . 26 4.4 Differences between the 1991’s and the 1999’s standard . . . . . . . . . . 26 5 Program to read Comtrade files into Matlab 28 5.1 Data structure of data storage in MATLAB . . . . . . . . . . . . . . . . . 31 6 Wavelets 33 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.2 Basic ideas of the wavelet transform . . . . . . . . . . . . . . . . . . . . . 35 6.2.1 Representation of signals through transforms . . . . . . . . . . . . 35 6.2.2 Continuous Wavelet Transform . . . . . . . . . . . . . . . . . . . . 43 6.2.3 Discretization of Continuous Wavelet Transform . . . . . . . . . . 49 II
Page 1 and 2: Development of a wavelet-based algo
Page 3: Eidesstattliche Versicherung Ich ve
Page 8 and 9: Chapter 1 Introduction Electrical p
Page 10 and 11: Chapter 2 Power Quality Recorder Si
Page 12 and 13: 2.2. FUNCTIONS 5 2.2.2 Power data r
Page 14 and 15: 2.3. INTERFACES 7 The binary inputs
Page 16 and 17: 2.4. OPERATION MODES 9 cessed. Figu
Page 18 and 19: 2.5. SOFTWARE (OSCOP P) 11 2.5.2 So
Page 20 and 21: 2.5. SOFTWARE (OSCOP P) 13 Figure 2
Page 22 and 23: 3.1. SIMEAS R CONFIGURATION 15 •
Page 24 and 25: 3.2. LABORATORY USE 17 Then the SIM
Page 26 and 27: 4.2. SOURCES OF TRANSIENT DATA 19 c
Page 28 and 29: 4.3. FILES FOR DATA EXCHANGE 21 4.3
Page 30 and 31: 4.3. FILES FOR DATA EXCHANGE 23 p=
Page 32 and 33: 4.3. FILES FOR DATA EXCHANGE 25 ft
Page 34 and 35: 4.4. DIFFERENCES BETWEEN THE 1991
Page 36 and 37: Figure 5.1: Structure chart of the
Page 38 and 39: 5.1. DATA STRUCTURE OF DATA STORAGE
Page 40 and 41: Chapter 6 Wavelets 6.1 Introduction
Page 42 and 43: 6.2. BASIC IDEAS OF THE WAVELET TRA
Page 54 and 55:
6.2. BASIC IDEAS OF THE WAVELET TRA
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Chapter 7 Algorithm to determine ce
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7.2. ANALYZATION OF THE DISTURBANCE
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7.3. MATLAB IMPLEMENTATION 61 7.3.2
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Chapter 8 Conclusion and Look-Out T
Page 72 and 73:
LIST OF FIGURES 65 6.8 Scale level
Page 74 and 75:
Bibliography [1] Ronald W. Schafer
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