Photovoltaic power generation amount prediction apparatus and solar power generation amount prediction method

摘要

An actual power generation amount receiver (4) acquires an actual power generation amount of a photovoltaic power generation system (2) of each time slot of each day. An extraterrestrial solar radiation calculator (7) calculates an extraterrestrial solar radiation of each time slot of each day at a disposition position. A weather information receiver (10) acquires an actual weather record of each time slot of each day and a weather forecast of a prediction target time slot. A similar date extractor (13) classifies a time slot, which is the same as a prediction target time slot of each day in a search range in which an actual power generation amount is acquired, as a similar time slot for each actual weather record type. A prediction formula deriver (14) derives a power generation amount prediction formula of an actual weather record type for calculating a predicted power generation amount from an extraterrestrial solar radiation of a prediction target time slot based on an actual power generation amount and an extraterrestrial solar radiation of a similar time slot of the actual weather record type.