Determination of the effect of harmonics on pipe-type power cable AC/DC resistance ratio

Journal Article · Mon Mar 01 04:00:00 EST 1993 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/20.250671· OSTI ID:6411065

Palmer, J A; Degeneff, R C ^[1]; McKernan, T M; Halleran, T M ^[2]

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1. Rensselaer Polytechnic Inst., Troy, NY (United States)
2. Consolidated Edison Co. of NY, Inc., New York (United States)

This paper presents a closed form expression to compute the AC/CD resistance ratio of HPFF (High Pressure Fluid Filled) pipe-type cable in the presence of harmonics. Industry currently computes this factor, which is a significant part in assessing the current carrying capacity of a system, with the assumption that the currents are purely sinusoidal at 60 Hz. However, as levels of harmonics increase on power systems, concern for the effect of harmonics on system ampacities rises, and that effect has already been discussed for distribution systems. This paper develops a closed form hybrid of the resistance ratio equations presented by Neher and McGrath, and compares the results with measured data at 60 Hz. At present there is no measured data available for the resistance ratio at higher frequencies, so a two dimensional finite element model is developed to view the effect of frequency on the resistance ratio. A discussion is given on the effect of a specific harmonics scenario on the resistance ratio of a given system, and results are presented for some example systems. The paper also discusses the validity and characteristics of each method.

• OSTI ID: 6411065
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:2; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240301* -- Power Transmission Lines & Cables-- Power Cables-- (1990-)
CABLES
CALCULATION METHODS
CONDUCTOR DEVICES
CURRENTS
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC FIELDS
ENERGY LOSSES
EQUIPMENT
FINITE ELEMENT METHOD
HARMONICS
LINE LOSSES
LOSSES
NUMERICAL SOLUTION
OSCILLATIONS
PERFORMANCE
POWER LOSSES
POWER TRANSMISSION
POWER TRANSMISSION LINES
UNDERGROUND POWER TRANSMISSION