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The paper presents a method of the series arc fault for DC systems. The aim of the study is to find some current characteristics, which can be significant for the purpose of arc detection. The validity of the proposed method is testified by analyzing the arc fault current signal. The low voltage series DC arc study is carried out on the currents waveforms acquired during some tests on electric appliances...
Digital microfluidic biochip (DMFB) is an attractive platform for immunoassays, point-of-care clinical diagnostics, DNA sequencing, and other laboratory procedures in laboratory experiments due to its flexible application and low fabrication cost and further for the development of instruments. As being applied for these safe-critical applications, on-line testing methods are required to ensure robust...
In this paper, we present an innovative approach in detecting fault conditions in a battery in which multiple model adaptive estimation (MMAE) technique is applied using electrochemical model of a Li-Ion cell. This physics based model of Li-ion battery (with LiCoO2 cathode chemistry) with healthy battery parameters was considered as the reference model. Battery fault conditions such as aging, overcharge,...
Electrical arcs are of great concern for power electronic systems. Modeling of arc faults to represent and predict arc characteristics and transient responses within the power system is now receiving considerable research attention. In this paper, a series DC arc fault demonstration rig is designed to generate series arcs by moving one electrode away from a stationary one with a stepper motor. Experimental...
This paper presents a dc arc model to simplify the study of a critical issue in dc microgrids: series faults. The model is derived from a hyperbolic approximation of observed arc voltage and current patterns, which permit analyzing the arc in terms of its resistance, power, energy, and quenching condition. Recent faults staged by the authors on a dc microgrid yielded enough data to develop an arc...
The solution of the equations of a dc circuit containing an arc is given and compared with experimental data. The arc is modeled according to its classical equivalent circuit and the adequacy of this model is discussed. The analytical solution for the circuit with an opening gap is given for the case of a constant gap and the results are extended to the cases of a gap opening with uniform velocity...
Differents types of arc faults can be responsible for the start of an electrical fire. Depending on the power system and the application (photovoltaic, vehicule, aircraft, residential wiring) the arc fault may involve contact or non-contact arcing with eventually semi-conductive materials in the vicinity. Other characteristics such as the gap distance or the electrode material and geometry may also...
The main circuit of UHVDC transmission system in China is introduced. Based on the ABB HVDC control protection system, the principle and method of the interface technology between the PSCAD/EMTDC and HIDRAW are introduced. An off-line real-time simulation system using PSCAD/EMTDC is built for UHVDC transmission system which is used for protection testing. With a practical project, various of the protection...
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