A New Approach to Arc Fault Detection for AC and DC Systems
ProQuest, 2005 - 196 pages
In this thesis, a new approach to identify an arcing fault is discussed. The proposed method also can distinguish an arcing fault from normal load behavior. It is the need for increased safety that has been a motivation for this thesis. By using the proposed model, an arcing fault can be easily identified and necessary action can be taken, so as to prevent the arc from escalating into a serious fire and causing a lot of damage.
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A series arc fault situation fault current is limited by the load
DC Series test data plot for a one of the test cases
Voltage and power spectrum plot of an arc caused by 50V 0 7 Ohm load
Voltage and power spectrum plot of AC parallel test with 5 8 Ohm load
Firstorder model parameters for DC series arc steady state response
Firstorder model parameters for AC parallel arc transient response
Voltage plot of the data for no arc
Secondorder model parameters for DC series arc transient response
Secondorder model parameters for AC tests with noarc response
Firstorder model parameters for DC tests with noarc response
0.7Ohms data 2.9 Ohms data 8.4 Ohms load a2 parameter determined AC arcing AC parallel arc AC parallel test AC tests Actual voltage arc condition Arc Fault Analysis Arcing fault detection autocorrelation matrix Autocorrelation plot Box-plot Burg method circuit breaker classifying the test Conditions a1 a2 data shown data1 data3 DC series arc determined in Chapter distance measure distinguish an arc electrodes estimate First-order model parameters frequencies identify an arc IEEE Transactions LabVIEW program non-arcing obtained for 270V Ohm data2 parallel arc fault parameters for AC parameters obtained partial autocorrelation Power Delivery power spectrum analysis power spectrum plot produced a distance reference parameters response Test Conditions second order model Second-order model parameters Series Arc Fault shown in Figure shown in Table Shown voltage signal data SMPS steady-state response Test Conditions a1 test data Test setup Transient Response Voltage and power Voltage data obtained Voltage plot waveform wire Yule-Walker method