Higashi-Shimizu Frequency Converter
The Higashi-Shimizu Frequency Converter ( English ; abbreviated Higashi-Shimizu FC , Japanese 東 清水 FC , Higashi-Shimizu efu-shī , completely 東 清水 周波 数 変 換 装置 , Higashi-Shimizu shūhasū henkan sōchi , lit. "Frequency conversion plant East-Shimizu “) Is a direct current back- to-back link located in the Japanese prefecture of Shizuoka , which is used to connect the power grids operated with different grid frequencies in Japan for the purpose of electrical energy exchange. The Japanese power grid uses a grid frequency of 50 Hz east of the Fuji River , while the western part operates at a grid frequency of 60 Hz. This means that no direct electrical connection to the power grid is possible.
The system is part of the East Shimizu substation ( 東 清水 変 電 所 , Higashi-Shimizu hendensho , English Higashi-Shimizu transformer substation ). In addition to the Higashi-Shimizu FC, there are also Shin-Shinano FC and Sakuma FC with a similar function in Japan .
Technical specifications
The system went into operation on March 24, 2006, consists of two converter halls and is located in the Shimizu district of Shizuoka City . It is operated by Chūbu Denryoku and is designed for a maximum transmission capacity of 300 MW . The direction of the energy flow can be either in an easterly or in a westerly direction, depending on the requirements.
The connection to the higher-level 60 Hz power grid is made with a three-phase alternating voltage of 275 kV , on the 50 Hz side with an operating voltage of 154 kV. The intermediate circuit is operated with a direct voltage of 125 kV, the power converters consist of several towers with water-cooled thyristors . In addition to the power transformers and the gas-insulated switchgear , there is a harmonic filter and a static reactive power compensator on both AC voltage sides of the system .
Individual evidence
- ↑ Higashi Shimizu Frequency Converter begins partial operations , press release of March 23, 2006
Coordinates: 35 ° 3 ′ 29 ″ N , 138 ° 30 ′ 0 ″ E