STATCOM ETO Failure Analysis

Author

Du, Zhong ; Chen, Bin ; Han, Chong ; Yang, Zhaoning ; Song, Wenchao ; Bhattacharya, Subhashish ; Huang, Alex Q.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC

Volume

3

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

4

Abstract

Emitter turn-off (ETO) thyristor based static synchronous compensator (STATCOM) is one of the promising flexible AC transmission system (FACTS) technologies, and it is gaining more popularity in utility grids. A 4.5 MVA ETO based STATCOM failed two ETO devices as over-voltage protection triggered AC connector and disconnected the STATCOM from AC grid supply. This paper presents the investigation of ETO failure reasons. The investigation found that dead time of switching signals is very critical for ETO applications. Protection methods for high power ETO applications are proposed based on failure investigation. Experiments verified the proposed protection method

Keywords

failure analysis; flexible AC transmission systems; overvoltage protection; power grids; static VAr compensators; thyristor applications; STATCOM ETO failure analysis; emitter turn-off thyristor; flexible AC transmission system; over-voltage protection; static synchronous compensator; utility grids; Automatic voltage control; Failure analysis; ETO device; STATCOM; failure analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4778238

Filename

4778238