The first multiterminal HVDC link was the 200 MW, 200 kV Sardinia to Italy monopolar link with line commutated (LCC) HVDC converters put into operation in 1968. Cables were used for the power transfer, but a short overhead line segment crossed the island of Corsica. In 1986 a third terminal was added on Corsica. This tap was put into operation in January 1987. The Pacific HVDC Intertie put into operation in 1972 was originally planned to become a 4-terminal system. However, the addition of two converters with additional line segments were never built because the need for it was assumed to be too far into the future. An expansion of a thyristor based HVDC LCC transmission link between Hydro Quebec and Massachusetts was planned for operation with five converter terminals, but it was eventually reduced to a 3-terminal system. This 2000 MW system was completed in 1992. The need for transfer of large amounts of power from remotely located energy sources to industrial and population centers in China and India provided the impetus beginning around 2015 to construct multiterminal HVDC schemes operating at 800 kV with power levels for bipoles of 6000 MW and above over distances of 1300 km and more. Also, the development of voltage sourced converters (VSC) using insulated bipolar transistors has opened up the possibilities for building HVDC grids that will operate similar to AC transmission systems. The VSC system described here was put into operation around 2013. It is built with five converters connected via 200 kV DC. Five examples of HVDC multiterminal systems are described here.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Multi-terminal HVDC Systems

  • Thomas Magg,
  • Colin Davidson,
  • Ting An,
  • Zhiyuan He,
  • Abhay Kumar Jain,
  • Rajashekar Patlola,
  • Nigel L. Shore

摘要

The first multiterminal HVDC link was the 200 MW, 200 kV Sardinia to Italy monopolar link with line commutated (LCC) HVDC converters put into operation in 1968. Cables were used for the power transfer, but a short overhead line segment crossed the island of Corsica. In 1986 a third terminal was added on Corsica. This tap was put into operation in January 1987. The Pacific HVDC Intertie put into operation in 1972 was originally planned to become a 4-terminal system. However, the addition of two converters with additional line segments were never built because the need for it was assumed to be too far into the future. An expansion of a thyristor based HVDC LCC transmission link between Hydro Quebec and Massachusetts was planned for operation with five converter terminals, but it was eventually reduced to a 3-terminal system. This 2000 MW system was completed in 1992. The need for transfer of large amounts of power from remotely located energy sources to industrial and population centers in China and India provided the impetus beginning around 2015 to construct multiterminal HVDC schemes operating at 800 kV with power levels for bipoles of 6000 MW and above over distances of 1300 km and more. Also, the development of voltage sourced converters (VSC) using insulated bipolar transistors has opened up the possibilities for building HVDC grids that will operate similar to AC transmission systems. The VSC system described here was put into operation around 2013. It is built with five converters connected via 200 kV DC. Five examples of HVDC multiterminal systems are described here.