Tap for Classical HVDC Based on Multilevel Current-Source Inverters

Author

Hao, Quanrui ; Ooi, Boon-Teck

Author_Institution

Dept. of Electr. Eng., McGill Univ., Montreal, QC, Canada

Volume

25

Issue

4

fYear

2010

Firstpage

2626

Lastpage

2632

Abstract

This paper describes an innovative HVDC tap design based on series connections of current-source capacitor-commutated thyristor modules. Besides immunity from commutation failure and autonomous frequency control, the tap has independent active and reactive power control. There is potential of cost reduction because the number of thyristors is reduced by one-third. Switching loss is minimum as the modules switch at 2 pulses per ac cycle. Harmonic elimination by “time shifting and zig-zag transformers” achieves a current total harmonic distortion of about 4%.

Keywords

HVDC power transmission; frequency control; invertors; reactive power control; autonomous frequency control; commutation failure; current-source capacitor-commutated thyristor modules; harmonic elimination; independent active power control; independent reactive power control; innovative HVDC tap design; multilevel current-source inverters; time shifting; zig-zag transformers; Costs; Frequency control; HVDC transmission; Inverters; Pulse transformers; Reactive power control; Switches; Switching loss; Thyristors; Total harmonic distortion; Current-source converter; HVDC; harmonic elimination; tap; thyristor; zig-zag transformers;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2010.2044895

Filename

5451152