Abstract: The establishment of interconnections with the aim of achieving economic benefits is a global trend in the development of power networks. Where such solutions are technically possible and profitable (AC solution), synchronous links are typically used to realise the interconnections. An HVDC coupling station or HVDC long Distance transmission (DCsolution) can be utilised when synchronous connections is not technically possible. The use of AC transmission has increased. The primary technical issues that limit the development of modern DC transmission are gradually being resolved with the advancement of power electronics, material science, and other fundamental technologies. DC power grids have not been produced for engineering application on a global scale, however related research and research for important equipment parts are developing progressively. An interphase transformer-related interleaving approach AC-DC converter with high-frequency isolation. This arrangement is suggested for applications involving offshore wind energy conversion systems (WECSs) with high-voltage DC transmission (HVDC). It is based on a medium-voltage DC (MVDC) isolated port. The use of DC-DC converters to process the energy produced by offshore systems is an option to increasing the power density on those systems The use of wind turbines in this type of arrangement is a modern trend.
Keywords: HVDC Transmission, Power Electronics Devices, System Interconnections, Hybrid Transmission Technology.
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