Hitachi, Ltd.

Satoshi Shimakura

Yoshikazu Ishii

Hiroshi Seki

Masataka Imabayashi

An electric power transmission facility planning support system for materializing facility planning including the facility expansion of an electric power transmission network is provided based on the system information of a power system. This support system includes an output control quantity calculation device for deriving the output control quantities of natural variation power supplies in consideration of the operation limit value of the network; and a facility expansion planning device for making the facility planning based on one of the type, location, and capacity of an electric power transmission facility considering the output control quantities.

Electric power transmission facility planning support system and the method thereof

The object is to enable easy acquisition of an element that is not design data. The technique is characterized in that when generating construction field management information used to manage a construction field, a construction field management device acquires measurement data that is three-dimensional shape data measured by a measurement device, and compares design data created by a designer with the acquired measurement data, thus extracting non-design data that is not the design data, from the measurement data. Also, as the non-design data, data of a scaffolding/tool and a component of the design data in a temporarily placed state are extracted, and the status of these is analyzed and displayed on a display unit.

Construction field management method and construction field management device

An object of the invention is to economically operate a voltage reactive power control device by reducing a transmission loss and reducing the number of tapping operations affecting the life span of a facility. Provided is a voltage reactive power control device including a central monitoring device that includes a loss prediction information output unit calculating a bus voltage on the basis of a generation probability of a power generation pattern, and outputting loss prediction information associated with the bus voltage from system configuration information, and includes a control amount determination unit determining a control pattern of the voltage reactive power control device from the loss prediction information. According to the invention, it is possible to economically operate a voltage reactive power control device by reducing a transmission loss and reducing the number of tapping operations affecting the life span of a facility.

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Tokyo, Japan

Satoshi Shimakura