Higashi-Shimizu Frequency Converter
The Higashi- Shimizu Frequency Converter (English, abbreviated Higashi- Shimizu FC, jap东 清水FC, Higashi - Shimizu efu - shī, completely东 清水 周波 数 変 换 装置, Higashi - Shimizu shūhasū HENKAN Sochi, literally "Frequency Conversion Facility East Shimizu ") is a located in the Japanese prefecture of Shizuoka DC short coupling, which serves to connect the powered with different network frequencies electricity networks in Japan for the purpose of electric energy exchange. The Japanese power grid used east of Fuji River a mains frequency of 50 Hz, while the western part with a mains frequency of 60 Hz AC. Thus no direct electrical connection of the electricity networks is possible.
The plant is part of the substation East Shimizu (东 清水 変 电 所, Higashi - Shimizu hendensho, Eng. Higashi- Shimizu transformer substation ). In addition to the Higashi- Shimizu FC are located in Japan nor the Shin- Shinano FC and FC Sakuma with a similar function.
The plant was put into operation on 24 March 2006, consists of two converter halls and is located in the district of the city of Shimizu, Shizuoka. It is operated by the Chubu Denryoku and is designed for a transmission capacity of up to 300 MW. The direction of the energy flow can be selectively and depending on demand in eastern or western direction.
The connection to the parent 60 Hz mains via a three-phase AC voltage of 275 kV, on the side with 50 Hz with an operating voltage of 154 kV. The intermediate circuit is operated with a DC voltage of 125 kV, the power converters comprise a plurality of towers with water-cooled thyristor. On both sides of the AC system in addition to the power transformers and gas-insulated switchgear nor ever a harmonic filter and static var compensator.