STATCOM ETO Failure Analysis

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 2006Publisher:IEEEJournal:2006 CES/IEEE 5th International Power Electronics and Motion Control Conference

Authors: Zhong Du; Bin Chen; Chong Han; Zhaoning Yang; Wenchao Song; Subhashish Bhattacharya; Alex Huang;

doi: 10.1109/ipemc.2006.4778238 , 10.1109/ipemc.2006.297316

STATCOM ETO Failure Analysis

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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.

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North Carolina Agricultural and Technical State University
United States
North Carolina State University
United States

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