Voislav Jankov - Academia.edu (original) (raw)
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Papers by Voislav Jankov
2010 International Conference on High Voltage Engineering and Application, 2010
The poles of bipolar HVDC transmission systems are often required to be capable of independent op... more The poles of bipolar HVDC transmission systems are often required to be capable of independent operation. In order to maintain the independence of the poles a return path for the current is needed. If a ground return cannot be used a neutral conductor must be installed, either on the same structures as the pole conductors or on separate structures. A fault on one pole of such a system may cause a fault on the neutral and a fault on the other pole; therefore, a fault must be efficiently cleared. This paper examines the effect a neutral conductor has on HVDC system reliability and the effectiveness of fault clearing devices such as arcing horns and neutral grounding breakers.
IEEE Transactions on Power Delivery, 1997
Determination of the maximal voltages induced on the overhead power lines by nearby lightning str... more Determination of the maximal voltages induced on the overhead power lines by nearby lightning stroke is a complex problem. The scope of this paper is to recognize the parameters that affect the maximal voltages and to present an equation for their estimation. This equation gives an opportunity to calculate the maximal voltage with the reasonable accuracy avoiding complex electromagnetic field calculus. It may be very useful in the estimation of flashover and outage rates due to the nearby strokes.
2010 International Conference on High Voltage Engineering and Application, 2010
The poles of bipolar HVDC transmission systems are often required to be capable of independent op... more The poles of bipolar HVDC transmission systems are often required to be capable of independent operation. In order to maintain the independence of the poles a return path for the current is needed. If a ground return cannot be used a neutral conductor must be installed, either on the same structures as the pole conductors or on separate structures. A fault on one pole of such a system may cause a fault on the neutral and a fault on the other pole; therefore, a fault must be efficiently cleared. This paper examines the effect a neutral conductor has on HVDC system reliability and the effectiveness of fault clearing devices such as arcing horns and neutral grounding breakers.
IEEE Transactions on Power Delivery, 1997
Determination of the maximal voltages induced on the overhead power lines by nearby lightning str... more Determination of the maximal voltages induced on the overhead power lines by nearby lightning stroke is a complex problem. The scope of this paper is to recognize the parameters that affect the maximal voltages and to present an equation for their estimation. This equation gives an opportunity to calculate the maximal voltage with the reasonable accuracy avoiding complex electromagnetic field calculus. It may be very useful in the estimation of flashover and outage rates due to the nearby strokes.