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The cost of offshore wind energy has not yet reached competitive levels despite the recent technological improvements. Optimization tools designed to reduce the overall losses in Offshore Wind Farms (OWFs) may help to reduce its cost of energy. Hence, fast and accurate loss models are necessary for the optimization of the OWFs design. The aim of this paper is the development of models to calculate...
The installation of HVAC underground cables became more common in recent years, a trend expected to continue in the future. Underground cables are more complex than overhead lines and the calculation of their resistance and reactance can be challenging and time consuming for frequencies that are not power frequency.
The computation of the sequence impedances is a very important topic for insulated cable systems chiefly in HV and EHV levels. This highlights the importance of using reliable procedures in order to compute these impedances since, up to now, their computations are based on simplified formulae. In this paper, results of some measurement campaigns have been compared with both simplified IEC formulae...
Occurrences of underground cable faults in the power transmission and distribution system is unavoidable due to several reasons. Long outage of power supply can cause the power distributors and retailers heavy loss of revenue and discomfort of the customers. Therefore, a quick detection and rectification of the faults is a major concern of the power distributors and retailers. This paper reviews a...
IEC grounding terminology provides concise descriptions of system configurations requiring a sentence or more using familiar North American verbiage. However, without relation to known systems, simple representations using only five letters of the alphabet join the list of meaningless acronyms that clutter our life. This paper begins with definitions of the five letters used to describe IEC grounding...
Thermo-mechanical bending (TMB) of pipe cables has become a topic of interest since the appearance of numerous failures in the only extensive utility installation of 345 kV cable. Those failures occur in the unsupported span of cable within the joint casing; the question naturally arises whether TMB distress will occur within the line pipe if within-joint failures are prevented (by rigidizing the...
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