ブラックスタートを模擬した実系統における500kV変圧器の逓昇加圧について

摘要

日本の電力系統は，高信頼度である。しかし，大変まれでrnあるが，大地震や想定外の事故が発生した場合にはブラッrnクアウト（大規模停電）が発生する可能性がある。rn九州電力は九州全域が停電し，他電力からも受電できなrnいという過酷なブラックアウトを想定して系統復旧の研究rnを行っている。%Considering the risk of blackout, Kyushu electric power company has studied about power system restoration at blackout start. Power system at blackout start is so small that over voltage which does not rise in normal power system is able to rise, because of transient phenomena and saturation of transformer which are caused by voltage application. Power system transformers should be applied its voltage as low as possible, ideally from zero, to prevent over-voltage problem. This paper reports field test results of voltage application by a voltage building-up procedure to a 500 kV-1000MVA power system transformer through a transmission line.