Study on transient characteristics of CCC-HVDC transmission systems

This paper mainly studies the transient characteristics of the HVDC with capacitor commutated converter (CCC-HVDC) and makes a comparative analysis with the HVDC with conventional converter (LCC-HVDC). The LCC-HVDC and CCC-HVDC models based on the Qinghai-Xizhang HVDC interconnection project are bui...

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Bibliographic Details
Published inIET Conference Proceedings p. P20
Main Authors Zhou Siyu, Wen Jun, Cao Wenjia, Lv Sizhuo, Yin Wei-yang
Format Conference Proceeding
LanguageEnglish
Published Stevenage, UK IET 2012
The Institution of Engineering & Technology
Subjects
Capacitors
d.c. transmission
Power convertors and power supplies to apparatus
capacitor commutated converter
transient characteristics
ac network
power convertors
PACAD-EMTDC
DC line
rectifiers
inverter
LCC-HVDC model
commutation
HVDC power transmission
invertors
capacitors
power transmission faults
rectifier
transient analysis
Qinghai-Xizhang HVDC interconnection project
CCC-HVDC transmission system
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Summary:This paper mainly studies the transient characteristics of the HVDC with capacitor commutated converter (CCC-HVDC) and makes a comparative analysis with the HVDC with conventional converter (LCC-HVDC). The LCC-HVDC and CCC-HVDC models based on the Qinghai-Xizhang HVDC interconnection project are built in the environment of PACAD/EMTDC and their transient characteristics are simulated by imposing a variety of faults. Both with very weak receiving ac network, it indicates that CCC-HVDC scheme has a stronger ability in anti-disturbance and inhibiting the commutation failure when the fault occurs in the inverter side, and has better stability when the fault occurs on the DC line or rectifier side. The CCC-HVDC scheme can effectively overcome the shortcomings of the conventional HVDC link. (5 pages)
ISBN:1849196737
9781849196734
DOI:10.1049/cp.2012.1754