Next Generation Offshore HVDC System Research and Development Project

Offshore wind farms are the key to expanding renewable energy in Japan, where the potential of onshore wind farms is limited. However, when installing the large-scale offshore wind power generation in the future, depending on the state of the power grid in the coastal area etc., it will be needed to directly connect to the upper power transmission system that has a relatively large connectable capacity, transmitted over a long distance on the sea bottom.

In this project, aiming at the practical application of highly reliable and inexpensive DC power transmission system, we will [1] plan and design a system which enables efficient transmission, judging from the simulation model and the model cases of the domestic systems, as well as evaluate business feasibility and [2] develop fundamental technologies for the practical application of DC power transmission systems suitable for long-distance power transmission.

Through this project, we will develop highly reliable multi-terminal DC power transmission systems at low cost and establish basic technologies for expanding and accelerating the implementation of large-scale offshore wind farms in the future.

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  Example of a multi-terminal high voltage direct current system

• Multi-Terminal HVDC System Control and Protection Standard Specifications (March, 2020) (Reference No: 20200000000482) （2.3MB）