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All Journal International Journal of Electrical and Computer Engineering International Journal of Applied Power Engineering (IJAPE)
C. K. Panigrahi
Kiit University
Computer Science & IT Electrical & Electronics Engineering

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A Novel Study on Bipolar High Voltage Direct Current Transmission Lines Protection Schemes Shobha Agarwal; C. K. Panigrahi; Aishwarya Sahoo; Sanitha Mishra
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 4: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (482.015 KB) | DOI: 10.11591/ijece.v8i4.pp1977-1984

Abstract

In long dc transmission lines identification of fault is important for transferring a large amount of power. In bipolar Line commutated converter transmission lines are subjected to harsh weather condition so accurate and rapid clearance of fault is essential. A comparative study of the bipolar system with both converters healthy and one converter tripped is studied. Most of the research paper has focussed on transmission line faults in bipolar mode but none of them had focussed when HVDC system works in monopolar mode after the fault. In the proposed scheme the voltage signals are extracted from both poles of the rectifier ends and are processed to identify the faults in transmission lines.The Artificial neural network is utilised in detecting the fault in both bipolar and monopolar system. Since it can identify the relationship between input and output data to detect the fault pattern it can be utilised under all conditions. Moreover, benefits of the proposed method are its accuracy, no requirement of the communication system as it acquires data from one end and has a reach setting of 99%.
A New Advanced Topology for Photo Voltaic Applications Sreedhar M; C. K. Panigrahi; Abhijit Dasgupta; J. Pati
International Journal of Applied Power Engineering (IJAPE) Vol 4, No 1: April 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.381 KB) | DOI: 10.11591/ijape.v4.i1.pp23-29

Abstract

This article proposes a high efficient DC-DC step-up converter with a single switch. This is particularly suited for Photo Voltaic (PV) applications, automotive applications, battery operated vehicles etc., in which voltage is step up from 10V to 500V. This converter operates at 100 kHz due to which switching losses are comparatively high. This topology proposes a scheme to mitigate power losses across the switch and to achieve high efficiency by Zero Current Switching (ZCS) at “Turn ON and Turn OFF” states. Proposed converter uses a single switch to reduce the losses in the converter and observed 98% of overall efficiency in the converter. The proposed converter is verified by its experimental results.
Co-Authors Abhijit Dasgupta Aishwarya Sahoo J. Pati Sanitha Mishra Shobha Agarwal Sreedhar M