— POWER GENERATION SERVICE Maximum reliability for Switzerland’s grid control center Modernization of the Swissgrid grid frequency controller by ABB ABB Power Generation Switzerland has migrated the existing Procontrol P13 grid controller to the latest state-of-the-art in control and operation technology for Swiss transmission system operator Swissgrid AG. Absolute reliability, availability and security are of paramount importance for both the national and international regulation of current flow. The 6700 km long Swiss transmission system opera- tes with voltages of 220 kilovolts and 380 kilovolts, as well as a frequency of 50 Hertz. It has more than 121 substations and a total of 12,000 transmission towers. In 2016, a total of 73,775 GWh of energy was transported

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