| 摘要 |
PROBLEM TO BE SOLVED: To detect an influence to a three-part distribution line caused by photovoltaic power generation equipment installed at a single-phase low-voltage distribution line of a general home and an individual consumer on assumption that the photovoltaic power generation equipment may rapidly be diffused to the general home and the individual consumer in future.SOLUTION: This detection system for influence to the three-phase distribution line of the photovoltaic power generation equipment comprises an each-phase current measurement device 5 which detects a current of each phase of a power distribution line at the three-phase side of a distribution line transformer 2 which converts three phases to a single phase, and an estimation part 11 which discriminates trends of a magnitude and a change of the each-phase current at each prescribed time on the basis of the each-phase current measured by the each-phase current measurement device and estimates that the imbalance of the each-phase current of the distribution line at the three-phase side is caused by the photovoltaic power generation equipment installed at the single-phase side low-voltage distribution line of the distribution line transformer. |
