The World’s First Commercial Installation

Building upon VSC-based STATCOM technology developed in the 1970s and 1980s, Mitsubishi Electric developed the first gate turnoff thyristor (GTO)-based STATCOM in the early 1990s. Its capacity totalled 80 MVA. For more than 20 years, the Inuyama STATCOM has proven the effectiveness of STATCOM technology.


PURPOSE: Mitsubishi Electric designed, manufactured and installed a STATCOM at the Kansai Electric Power Company’s Inuyama hydroelectric power plant switching station. The customer commissioned Mitsubishi Electric to improve small-signal stability (i.e., increase damping) of a 154kV line for increasing transmission capabilities to customers in the city of Osaka, nearly 107 miles from the switching station.

Commissioned: 1991
Dynamic Rating: -80 to +80 Mvar
System Voltage: 154kV
Converter Type: 2-Level, 8-Stage Multi-Transformer
GTO Ratings: 4.5kV/3kA
Harmonic Filters: None