4-6-1 情報と電力の融合したデジタルグリッド(4-6 エネルギーシステム,Session4 新エネルギー,研究発表)

概要

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New concept of DIGITAL GRID composed of Digital Grid Routers and Digital Grid Controllers is proposed to admit a large amount of renewable energy by separating them into smaller stand-alone grids, called "cell-grids". Frequencies in such cell-grids will be fluctuating in a certain range and maintained by energy storage devices. A Digital Grid Router which has multi self-commuted static converters that share common DC bus, with their own IP addresses, is proposed to connect to those unsynchronized stand-alone cell-grids and to accommodate necessary power among cell-girds to maintain their energy storage level. A number of connecting power links can be made and will have stronger redundancy of power accommodation. A Digital Grid Controller with an IP address is also proposed, to control power devices such as energy storage, generators and loads within a synchronized cell-grid. A DIGITAL GRID composed of these Digital Grid Routers and Digital Grid Controllers can accommodate the designated power among cell-grids and/or power devices including the ordinary main grid, by using IP addresses. Digital Grid Routers can distinguish each power with header and footer information of IP packet. They can make broadcast requests, replies, reservations and confirmations before the actual power accommodation.
2011-08-09