Hitachi, Ltd.

Tohoku Electric Power Company, Inc.

Tohoku Electric Manufacturing Co., Ltd.

Tsukasa Oonishi

Masahiro Watanabe

Masatoshi Kumagai

Kenichiro Yamane

Kunihiko Tsunedomi

Katsuhiro Matsuda

Jun Murakoshi

Ryo Egashira

Takuya Matsumoto

Tomoya Sato

The output of a photovoltaic power generator is estimated by estimating a solar radiation amount at a point different from solar radiation measurement points and determining an estimation error amount from solar radiation values measured at limited points. A photovoltaic power generator output estimation method estimates an output of a photovoltaic power generator based on a measured solar radiation value. The method includes a first estimation method of estimating a solar radiation amount at a photovoltaic power generator installation point from solar radiation meter installation point information, a value measured by a solar radiation meter, and photovoltaic power generator installation point information; a second estimation method of estimating the solar radiation amount at the photovoltaic power generator installation point in a manner different from that of the first estimation method; an output estimation method of estimating the output of the photovoltaic power generator from an estimated solar radiation amount and a rated capacity of the photovoltaic power generator; and an error estimation method of determining an estimation error of a photovoltaic power generator output from a difference between the first and second estimation methods.

Photovoltaic power generator output estimation method and device, and power system monitoring device using same

To provide a power system analysis support system in which the amount of data to be sent from a measuring device to an analysis support apparatus can be reduced. A measuring device includes a measuring unit which performs measurement related to a power system, a storage unit which stores measurement values measured by the measuring unit, a parameter generator which generates a predetermined parameter indicating a probability density function of the measurement value from the plurality of measurement values stored in the storage unit, and a communication unit which sends the predetermined parameter generated by the parameter generator to an analysis support apparatus. The analysis support apparatus includes a communication unit which receives the predetermined parameter from the measuring device, and a probability density function generator which generates a probability density function of the measurement value from the received predetermined parameter.

Power system analysis support system, analysis support apparatus for power system, analysis support method for power system, and measuring device for power system

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Tokyo, Japan

Tsukasa Oonishi