Cross-bonding cable and box model based on pulse reflection measurement

Cross-bonding cable and box model based on pulse reflection measurement

De Regt, J.J.
Hoogendorp, G.
Wagenaars, P.
Wouters, P.A.A.F.
Popov, M.
Van der Sluis, L.
Steennis, E.F.

Electrical Engineering, Mathematics and Computer Science

Electrical Sustainable Energy

2014-09-10

Transients from lightning strikes can enter underground cables at overhead line to power cable transitions. Possible overvoltages on these surges at cross-bonding connections of the cable screens are of major concern. A model is developed for modelling overvoltages from transient signal propagation through a combined cross-bonding cable and box. This model is applied to the first Dutch 400 kV cable connection. Such model incorporates model parameters whose values depend on design details of the cross-bonding box. The values for these model parameters are extracted from the measured transmission and reflection signal on steep pulses injected into the actual cross-bonding box configuration. The model combines transmission line description for the cross-bonding cables with mainly inductive behaviour of the cross-bonding box. The obtained results are verified by measurements. The model is applied to investigate overvoltages induced at the cross-bonding cable and box on 1.2/50 ?s impulse voltage injection representing a lightning impulse voltage applied to the core conductor of the cross-bonding cable. Furthermore, the effectiveness of surge arresters to reduce overvoltages at the cross-bonding cable screen is demonstrated by simulations with this model in PSCAD.

overvoltage protection
overhead line conductors
lightning protection
power overhead lines
arresters
underground cables
power system transients
pulse measurement

http://resolver.tudelft.nl/uuid:0ce31d69-2964-4716-934e-289e95260145

https://doi.org/10.1049/iet-smt.2014.0095

Institution of Engineering and Technology (IET)

1751-8822

IET Science, Measurement and Technology, 2014

Institutional Repository

journal article

(c) 2014 This is an open access article published by the IET under the Creative Commons Attribution-NoDerivs License (http://creativecommons.org/licenses/by-nd/3.0/)