Measurement of harmonic currents and evaluation of the DC filter performance of the New England-Hydro-Quebec Phase I HVDC project

Author

Garrity, T.F. ; Hassan, I.D. ; Adamson, K.A. ; Donahue, J.A.

Author_Institution

Ebasco Services Inc., New York, NY, USA

Volume

4

Issue

1

fYear

1989

fDate

1/1/1989 12:00:00 AM

Firstpage

779

Lastpage

786

Abstract

Measurements were conducted to determine the cause of increased telephone interference and to evaluate the DC filter performance. The measurements revealed unexpected high levels of three-pulse harmonic currents in the DC pole conductors. The cause is attributed to imbalances within the six-pulse bridges caused by the converter transformer and valve stray capacitances to ground. The conventional model of the converter power circuit used as the basis for the DC filter design does not reproduce the measured three-pulse harmonics

Keywords

DC power transmission; filters; harmonics; power system interconnection; power system measurement; 450 kV; 690 MW; DC filter performance; DC pole conductors; HVDC; New England-Hydro-Quebec intertie; Phase I project; converter transformer; harmonic currents; six-pulse bridges; telephone interference; three-pulse harmonic currents; valve stray capacitances to ground; Bridge circuits; Capacitance; Conductors; Current measurement; Interference; Power harmonic filters; Power measurement; Power system harmonics; Telephony; Valves;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.19270

Filename

19270