Hitachi, Ltd.

Kabushiki Kaisha Toshiba

Mitsuo Tsurugai

Tomoyuki Nakamura

Keiko Abe

Taichi Isogai

Sumito Tobe

Yasutaka Kimura

Tohru Akatsu

Shinichi Inage

Masashi Toyota

Noriyuki Murakoshi

Shigeru Tamura

Toshiyuki Fujikawa

Mika Imai

Hyogo Takami

Norimasa Nakata

Takamasa Kiyono

Takahiro Mochizuki

Shinichiro Nakanami

A method and device for operating a power system, and a rechargeable-battery management device that extracts maximum performance from rechargeable batteries and uses the batteries evenly while taking into consideration cost and the operation of the batteries are provided. According to the method for operating a power system provided with a plurality of rechargeable-battery devices and a plurality of electric generators, the amount of power that a rechargeable battery available during a scheduled time period on a scheduled date will be able to supply is determined, an economic-dispatch calculation including the determined amount of power that the aforementioned rechargeable battery will be able to supply is performed for the power system, and the rechargeable battery is used to supply power during the scheduled time period on the scheduled date.

Method and device for operating power system, and rechargeable-battery management device

An electric power trading support system includes a demand prediction unit, a demand prediction error evaluation unit, a demand predicted value upward adjustment ratio (quantity) setting unit, a private power generation/power purchase ratio (quantities) setting unit, an optimization unit for evaluating optimum values of the demand predicted value upward adjustment ratio (quantity) and the self power generation/power purchase ratio (quantities) based on costs, and a display unit for displaying the optimum values evaluated by the optimization unit, maximizing profit to an electric power retailer by minimizing the cost for power generation and power purchase when the electric power retailer sells electric power by use of a private power generator and backup electric power purchased from an electric power company.

Electric power trading support system

Growing community of inventors

Tokyo, Japan

Mitsuo Tsurugai