Press Release Back Number(2006)

Higashi Shimizu Frequency Converter begins partial operations

March 23, 2006
Chubu Electric Power Co., Inc.

With the completion of various temporary measures in the Suruga - Higashi Shimizu line construction plans, Chubu Electric Power Co., Inc. plans to begin partial operations of its Higashi Shimizu Frequency Converter (FC) equipment as of midnight preceding March 24, 2006.

Japan uses two electrical frequencies: 50 Hz east of the Fujikawa River in Shizuoka Prefecture and 60 Hz west of the Fujikawa River. The eastern and western power networks are connected via frequency converters, which convert 50-Hz power to 60 Hz and vice versa.

Two frequency converters are currently used in Japan: the Shin-Shinano FC and the Sakuma FC. The Higashi Shimizu FC will be the nation's third.

Overview of this frequency-converter equipment

Item Details
  • • Thyristor valve:
    • Rating: 300 MW
      (Maximum capacity during partial operations will be 100 MW)
    • Structure: four-arm stack
      (air insulated and cooled by pure-water cycling)
  • • Phase-modifying equipment (1)
  • • AC filter (1) etc.
Attendant equipment
  • • 275/154-kV transformer (1)
  • • 275-kV gas-insulated switchgear (1)
  • • 154-kV gas-insulated switchgear (1)
Location 677-3 Tanakake, Hirose-aza, Shimizu-ku, Shizuoka
(on the site of the Higashi Shimizu transformer substation)