Harmonic load losses in HVDC converter transformers

Journal Article · Tue Jan 01 04:00:00 EST 1991 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/61.103734· OSTI ID:6002830

Forrest, J A.C. ^[1]

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1. Teshmont Consultants, Inc., Winnipeg, MB (Canada)

Previous methods used to allow for the harmonic loss component of converter transformer load loss have not taken into account variations in transformer inductance, the ratio of winding stray loss to the other stray loss, or the converter firing angle. As a result of a reduction in converter reactance for some schemes, the harmonic loss allowance has been shown to be inadequate. Short circuit losses were measured in a 213 Mva single phase converter transformer at a number of frequencies between 60 Hz and 6 kHz. Using the results of these tests the harmonic losses during ac/dc converter operation were calculated. Variation of harmonic losses with transformer reactance, transformer winding stray loss factor and converter firing angle were studied. Using exponents of the components of harmonic losses with frequency derived from the tests, a table has been developed for determining the magnitude of the harmonic loss during converter operation. The data required to use the table is derived from design calculations and normal load loss test results.

• OSTI ID: 6002830
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA) Vol. 6:1; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240202* -- Power System Networks
Transmission & Distribution-- DC Systems-- (1990-)
DC SYSTEMS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENERGY LOSSES
ENERGY SYSTEMS
EQUIPMENT
HARMONICS
HVDC SYSTEMS
LOSSES
OSCILLATIONS
POWER CONDITIONING CIRCUITS
POWER LOSSES
POWER SYSTEMS
TRANSFORMERS