Down Stream Fault Current Interruption by Dynamic Voltage Restorer
|International Journal of Electrical and Electronics Engineering|
|© 2014 by SSRG - IJEEE Journal|
|Volume 1 Issue 7|
|Year of Publication : 2014|
|Authors : V.Ramesh Babu, CH.Jayavardhana Rao, Y.Damodharam, P. Raju|
V.Ramesh Babu, CH.Jayavardhana Rao, Y.Damodharam, P. Raju, "Down Stream Fault Current Interruption by Dynamic Voltage Restorer" SSRG International Journal of Electrical and Electronics Engineering 1.1 (2014): 6-12.
V.Ramesh Babu, CH.Jayavardhana Rao, Y.Damodharam, P. Raju,(2014). Down Stream Fault Current Interruption by Dynamic Voltage Restorer. SSRG International Journal of Electrical and Electronics Engineering 1.1, 6-12.
This paper introduces and evaluates an control strategy for downstream fault current interruption in a radial distribution line by using a dynamic voltage restorer (DVR). The proposed controller can be able tocompensate the voltage-sag compensation control of the DVR. It independently controls the magnitude and phase angle of the injected voltage for each phase. Digital filters are used to estimate the magnitude and phase of the measured voltages and effectively reduce the impacts of noise, harmonics, and disturbances on the phasor parameters. The results of the simulation studies performed in the MATLAB SIMULATION. The control scheme: 1) can limit the fault current to less than the nominal load current and restore the point of common coupling voltage within 10 ms; 2) can interrupt the fault current in less than two cycles; 3) limits the dc-link voltage rise and,; 4) performs satisfactorily even under arcing fault conditions; and 5) can interrupt the fault current under low dc-link voltage conditions.
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Digital filters, dynamic voltage restorer (DVR), fault current interrupting, multiloop control.