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

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LIST OF FIGURES 65 6.8 Scale level and frequency band . . . . . . . . . . . . . . . . . . . . . . . . 46 6.9 Step 1 of the continuous wavelet transform . . . . . . . . . . . . . . . . . 47 6.10 Step 3 of the continuous wavelet transform . . . . . . . . . . . . . . . . . 47 6.11 Step 4 of the continuous wavelet transform . . . . . . . . . . . . . . . . . 48 6.12 The continuous wavelet transform (Here: f=800/a, t=b) . . . . . . . . . . 48 6.13 The dyadic lattice in the time-scale plane . . . . . . . . . . . . . . . . . . 49 6.14 One - stage - filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 6.15 Multiple - level - decomposition . . . . . . . . . . . . . . . . . . . . . . . . 52 7.1 Daubechies4 wavelet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 7.2 Detecting a disturbance, using Daubechies4 wavelet - wavelet coeffi- cients squared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 7.3 Distribution of energy in 10 wavelet coefficient levels . . . . . . . . . . . 57 7.4 Some voltage signals with power quality disturbances . . . . . . . . . . . 58 7.5 Deviation in distributed energy related to figure 7.4 . . . . . . . . . . . . 59 7.6 Structure chart of the program module which calculates the reference energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 7.7 Structure chart of the program module which identifies the disturbance 61
List of Tables 5.1 Data structure of the calculating algorithm . . . . . . . . . . . . . . . . . 32 66
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Development of a wavelet-based algo
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Eidesstattliche Versicherung Ich ve
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2.5.2 Software modules . . . . . .
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Chapter 1 Introduction Electrical p
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Chapter 2 Power Quality Recorder Si
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2.2. FUNCTIONS 5 2.2.2 Power data r
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2.3. INTERFACES 7 The binary inputs
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2.4. OPERATION MODES 9 cessed. Figu
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2.5. SOFTWARE (OSCOP P) 11 2.5.2 So
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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 60 and 61: Chapter 7 Algorithm to determine ce
Page 62 and 63: 7.2. ANALYZATION OF THE DISTURBANCE
Page 68 and 69: 7.3. MATLAB IMPLEMENTATION 61 7.3.2
Page 70 and 71: Chapter 8 Conclusion and Look-Out T
Page 74 and 75: Bibliography [1] Ronald W. Schafer
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