Detection apparatus, power conditioner, detection method, and computer readable medium
An islanding operation is detected appropriately through interconnection to the power grid which may have various characteristics. A detection apparatus is provided, which includes a frequency parameter calculation unit configured to calculate frequency parameters according to frequencies of power supplied by a power supply, a deviation parameter calculation unit configured to calculate a deviation parameter according to a frequency deviation based on the frequency parameters in a first term and the frequency parameters in a second term earlier than the first term, an islanding operation detection unit configured to detect whether the power supply is in an islanding operation based on the deviation parameter, and a time gap change unit configured to change a time gap between the first term and the second term.
FUJI ELECTRIC CO., LTD.
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inventional additional inventional inventional
Hideyuki Takayuki
Ito Nagakura