自励式交直変換器における直流偏磁現象とその抑制

概要

論文の詳細を見る
A dc component in the output of a self-commutated converter causes the converter transformer to become dc-magnetized, in the worst case causing an overcurrent due to saturation. We experienced dc-magnetization of the converter transformer in a 50 MVA self-commutated SVC (static var compensator) at the Shin-Shinano Substation of Tokyo Electric Power Company when system disturbances occurred as a result of energizing an adjacent large-capacity main transformer. To deal with this problem, a novel method of preventing dc magnetization was developed that makes a fast flux correction according to the voltage dc component detected in the converter output. This method was applied to the 50 MTA self-commutated SVC and produced satisfactory operation results.
社団法人日本磁気学会の論文
1998-02-01