An electromagnetic transient study has been performed based on a practical 500 kV mixed transmission system. The system overhead lines, submarine cables and underground cables. exact expression of earth-return impedance for cable developed. A new equivalent homogeneous earth method (EHEM) is also proposed the formula. influences air, seawater, seabed, wired armor structure multi-layer seabed se...

Crosslinked polyethylene (XLPE) has become the globally preferred insulation for power cables, both for distribution and transmission system applications. This insulation system provides cost efficiency in operation and procurement, as well as lower environmental and maintenance requirements when compared to older impregnated paper systems. The purpose of this paper is to outline some of the de...

This study presents a validated adaptive method intended for real-time thermal rating (RTTR) of underground power cables. The accuracy of the RTTR algorithm, when producing emergency ratings or predictive calculations, strongly depends on the following parameters (which have large uncertainties): correct soil modelling, the proper determination of the soil properties and the accurate estimation...

In this paper a new method has been proposed for calculating the frequency-dependent parameters of underground cables. The method uses full-wave formulation for calculating the modal electromagnetic fields and corresponding voltages and currents and then extracting frequency-dependent per-unitlength parameters of underground cables. The proposed method can be used for any cross-sectional shape ...

The world is (at least) three dimensional in our perception although when it comes to representation we have become used to the simplification of the ‘reality’ into two dimensions (2D). Most situations in a cadastre can be represented in 2D on a map without that this representation causes too many uncertainties or queries. However, with current developments in architecture, registration of apar...

This is a project report from the Power Systems Engineering Research Center (PSERC). PSERC is a multi-university Center conducting research on challenges facing a restructuring electric power industry and educating the next generation of power engineers. More information about PSERC can be found at the Center's website: Notice Concerning Copyright Material PSERC members are given permission to ...

Protecting transmission lines is one important task to safeguard electric power systems. The transient fault signal on transmission lines need to be detected, classified and located accurately and cleared as fast as possible. This research present an application of a discrete wavelet transforms (DWT) for fault diagnosis in underground cable system. Fault simulations are carried out using ATP/EM...