Inspec keywords: power system interconnection; frequency convertors; electric power generation; HVDC power transmission; environmental factors

Other keywords: HVAC links; 50 Hz; Sakuma frequency-converter station; HVDC links; frequency conversion; Japanese electricity network; 60 Hz; nuclear generation; thermal generation; power exchanges; environmental issues

Subjects: d.c. transmission; Power system management, operation and economics; Power convertors and power supplies to apparatus; Generating stations and plants