Overview of Semiconductive Shield Technology in Power Distribution Cables

Han, Suh Joon; Mendelsohn, A.; Ramachandran, Rithambara

doi:10.1109/tdc.2006.1668572

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…The surface smoothness at interfaces between the insulation layer and semi-conductive shields is an important factor to the long term electrical performance of power cables. The micro-protrusions from the semiconductive shields can result in localized electrical stress and induce undesired treeing or electrical degradation [5]. The effects are more severe depending on the shape and size of the protrusion.…”

Section: Inroductionmentioning

confidence: 99%

Pre-determination of partial discharge inception voltage in power cables using electrode gaps in air under AC voltage

Mohamed

Siew

Sheng

et al. 2017

2017 IEEE 21st International Conference on Pulsed Power (PPC)

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The breakdown of insulation in cables while in service can cause considerable damage to equipment and the accessories to which they are connected. PD in cables arises due to the overstressing of cable insulation resulting from electric field enhancement caused by imperfections in cable core and screen. The nature and magnitude of PD activity depends upon the type of defect, aging, environmental factors, applied voltage and cable loading. Reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6% tolerance setting on nominal voltage on distribution networks. This ±6% voltage reduction on may have little or an adverse effect on PD magnitude depending on the nature of defect present in the cable. Hence there is a clear requirement to predetermine the PD inception voltage in cables through laboratory experiments to understand the significance of voltage reduction. This means to verify the effect of voltage reduction on extinguishing or minimizing PD activity in cables. In this paper, range of voltages at which PD incepts termed as partial discharge inception voltage(PDIV) is measured using a test cell containing different types of electrode configuration having different spacing. PDIV measured using the test cell is verified by conducting partial discharge testing in paper insulated lead covered (PILC) and cross-linked poly ethylene(XLPE) cables. It has been found that PDIV measured using the test cell and cable are in good agreement.

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Section: Inroductionmentioning

confidence: 99%

Pre-determination of partial discharge inception voltage in power cables using electrode gaps in air under AC voltage

Mohamed

Siew

Sheng

et al. 2017

2017 IEEE 21st International Conference on Pulsed Power (PPC)

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Semi‐conductive Polymer Composites for Power Cables

Li¹,

Du²,

Zhao³

et al. 2021

Polymer Composites for Electrical Engineering

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Evolution of medium voltage extruded cable technology in north america

Mendelsohn

Richardson

2009

2009 IEEE Electrical Insulation Conference

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When unjacketed medium voltage (MV) extruded power cables were first installed in the late 1960's, cable manufacturers and utilities expected them to perform reliably for 20 or even 30 years. History has shown that the service life of some of these early cables, whether HMWPE or EPR, could be improved. Since then, utilities in North America have demanded and obtained significant improvements in the performance and reliability of MV underground cables. Improvements in insulation cleanliness and resistance to wet aging, in semiconductive shield smoothness and cleanliness, in cable jacketing, in cable manufacturing processes, and in specifications and qualification test requirements, have all combined to deliver in modern cables expected service life exceeding 40 years. Many accelerated cable aging tests, as well as more relevant field aged cable tests, have been conducted in the last decade and confirm the improved reliability resulting from the material and cable manufacturing improvements. Results from key studies will be summarized. The paper will also discuss further improvements being targeted in the development of new products.

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Overview of Semiconductive Shield Technology in Power Distribution Cables

Cited by 6 publications

References 7 publications

Pre-determination of partial discharge inception voltage in power cables using electrode gaps in air under AC voltage

Pre-determination of partial discharge inception voltage in power cables using electrode gaps in air under AC voltage

Semi‐conductive Polymer Composites for Power Cables

Evolution of medium voltage extruded cable technology in north america

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