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

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3.2. LABORATORY USE 17 Then the SIMEAS R is connected to the power network model in the laboratory. At least the plugs for the current in all three phases and the plugs for the voltage in all three phases have to be plugged in. As an option the fourth voltage input can be connected to the neutral conductor. There are four additional voltage inputs and some digital inputs. So it is possible to record status information from switches or distance relays. After that some failures (single phase and three-phase short circuits, earth faults) were simulated with the power network model with different neutral earthing (solidly earthed, isolated and inductive earthed system). If the parameters were set correctly, the SIMEAS R records them. With Oscop P the recordings are viewed and analyzed. In addition to the SIMEAS R, the disturbances were also recorded with a digital distance relay. The recordings of these two devices were compared and analyzed.
Chapter 4 IEEE Standard Common Format for Transient Data Exchange (COMTRADE) for Power Systems 4.1 Introduction The rapid evolution and implementation of digital devices for fault and transient record- ing and testing in the electric utility industry has generated the need for a standard format for the exchange of such data for use with various devices to enhance and auto- mate the analysis, testing, evaluation and simulation of the power system and related protection schemes during fault and disturbance conditions. The COMTRADE standard defines a common format for the data files and exchange medium needed for the interchange of various types of fault, test, or simulation data. The proliferation and implementation of digital devices for the acquisition, analysis, simulation and testing of power - system equipment has made available a profusion and variety of data that has not been readily available in the past. Since these data may come from a variety of sources, from different manufacturers using proprietary or other standard formats, a common format standard is necessary to facilitate the exchange of such data between devices with diverse applications but that have the 18
Page 1 and 2: Development of a wavelet-based algo
Page 3 and 4: Eidesstattliche Versicherung Ich ve
Page 5 and 6: 2.5.2 Software modules . . . . . .
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 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 72 and 73: LIST OF FIGURES 65 6.8 Scale level
Page 74 and 75:
Bibliography [1] Ronald W. Schafer
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