Kabushiki Kaisha Toshiba

Akinori Nishi

Takenori Kobayashi

Yoshihiro Ogita

Koji Toba

Ryoichi Ichikawa

Mari Tanaka

Ryo Yano

According to one embodiment, there is provided an executive monitoring and control system for monitoring and controlling a power generation output of each dispersed power source and a load of each demand facility in a smart grid or a micro grid. An abnormal-time interchange procedure formation unit forms, when a fault occurs in a system, an interchange procedure of matching the total power generation output amount of dispersed power sources with the total loading of demand facilities, by using at least the information acquired by the measurement value monitoring unit and the information managed by the customer information management unit.

Executive monitoring and control system for smart grid and micro grid

A power supply and demand control apparatus includes a power generation planning unit that calculates one day's power outputs of multiple distributed power sources and a power flow target of a linking point to another power system, a long-cycle control unit having a long-cycle supply-demand balancing control unit that performs control every few minutes so as to ensure the supply-demand balancing of electric energy in a given amount of time at the linking point in order to perform control for making deviations between total power output calculated by the power generation planning unit and load power in the power system constant, and a short-cycle control unit having a short-cycle supply-demand balancing control unit that performs similar control every few seconds. In the power supply and demand control apparatus, the long-cycle control unit and short-cycle control unit perform the supply-demand balancing control in a hierarchical fashion to determine output assignments of the distributed power sources.

Power supply and demand control apparatus and power supply and demand control method

According to one embodiment, the economical load dispatcher calculates a discharging threshold value and a charging threshold value based on a discharging unit price of and a charging and discharging efficiency of the secondary battery and further calculates output allocations of the generators and secondary battery such that the secondary battery is discharged when incremental fuel costs of the generators are higher than the discharging threshold value, whereas the secondary battery is charged when incremental fuel costs of the generators are lower than the charging threshold value.

Supply and demand control apparatus for electric power system, and storage medium storing supply and demand control program

To provide a secondary battery controlling apparatus and a controlling method that can keep a storage amount of a secondary battery used for supply and demand control of a power system not close to 100% or 0%. The present invention is a power supply and demand controlling apparatus of a small-scaled power systemincluding distributed power suppliesincluding a secondary battery and a controlling method, wherein the secondary battery controlling apparatus includes a power generation planning partcalculating a planned output value of the distributed power supply based on a past load power and output data including track record data of a power generation output, a planned storage amount estimating partestimating a planned storage amount of the secondary battery from the planned output value of the secondary battery calculated at the power generation planning part, an actual output detecting partmeasuring and detecting an actual output value of the secondary battery, an actual storage amount estimating partestimating an actual storage amount from the actual output value of the secondary battery detected at the actual output detecting part, and a storage amount controlling partcontrolling the actual storage amount back to the planned storage amount if there is a difference between the planned storage amount estimated at the planned storage amount estimating part and the actual storage amount estimated at the actual storage amount estimating part.

Growing community of inventors

Kunitachi, Japan

Akinori Nishi