Mitsuhiro Ito, Sumio Kachi, Junichi Kasahara, Taihei Noro, Daisuke Watanabe, Tadataka Wakabishi
Abstract
Aiming to accomplish the target of a carbon-neutral society in 2050, the largescale introduction of renewable energies and the spread of electric vehicles are forecasted. It is a characteristic of these power sources to be input and output in direct current. The direct current power system, combined with direct current links, can reduce power losses that occur during the conversion from direct current to alternating current or vice versa. This results in economically superior operation compared to existing alternating current power systems. In this research, we introduce our originally invented hierarchical autonomous decentralized control method which satisfies both the autonomous decentralized control to supply stable power robustly even against sharp fluctuations of the power demand and the total optimum operation to minimize the power rate. Additionally, we will describe the configuration of our small-scale model of the hierarchical autonomous decentralized control method constructed in our company, as well as the operation tests based on the demand and supply patterns during the summer, winter, and intermediate periods.
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