Theoretical Maximum Limits on Power-Handling Capacity of HVDC Cables

Reddy, Chandupatla Chakradhar (2009) Theoretical Maximum Limits on Power-Handling Capacity of HVDC Cables. In: IEEE Transactions On Power Delivery, 24 (3). pp. 980-987.

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Abstract

In the case of an ac cable, power transmission is limited by the length of the cable due to the capacitive reactive current component. It is well known that high-voltage direct current (HVDC) cables do not have such limitations. However, insulation-related thermal problems pose a limitation on the power capability of HVDC cables. The author presents a viable theoretical development, a logical extension to Whitehead's theory on thermal limitations of the insulation. The computation of the maximum power-carrying capability of HVDC cables subject to limits on the maximum operable temperature of the insulation is presented. The limitation on the power-carrying capability is closely associated with the electrothermal insulation failure. The effect of environmental interaction by way of external thermal resistance, an important aspect, is also considered in the formulations. The Lagrange multiplier method has been used to handle the ensuing optimization problem. The theory is based on an accepted theory of thermal breakdown in insulation and is an important and a coherent extension of great significance.

Item Type:	Journal Article
Publication:	IEEE Transactions On Power Delivery
Publisher:	Ieee-Inst Electrical Electronics Engineers Inc
Additional Information:	Copy rights of this article belongs to IEEE.
Keywords:	Cable Insulation; High-Voltage Direct Current (HVDC) Transmission; Power Cable Thermal Factors; Power Cables
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	06 Jan 2010 06:45
Last Modified:	19 Sep 2010 05:39
URI:	http://eprints.iisc.ac.in/id/eprint/21844

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