OUTPUT FLUCTUATION SUPPRESSION SYSTEM FOR DISTRIBUTED POWER SUPPLY

摘要

PROBLEM TO BE SOLVED: To provide an output fluctuation suppression system for distributed power supply for making it possible to prevent fluctuation in system power in a distributed power supply using renewable energy such as photovoltaic power generation from being generated even when output of the distributed power supply suddenly fluctuates depending on a natural condition.SOLUTION: An output fluctuation suppression system for distributed power supply includes: a distributed power supply 1 for outputting DC power; a first power conversion apparatus 2 for outputting DC power from the distributed power supply 1 to a DC main circuit 3; and a second power conversion apparatus 8 for outputting AC power from the DC main circuit 3 to a power supply system. A system output control apparatus 6 for controlling output of AC power to the power system 11 and a fluctuation suppression calculation apparatus 5 for calculating an output instruction for the system output control apparatus 6 on the basis of generated power α of the distributed power supply 1 are connected to the second power conversion apparatus 8. A power storage element 10 for absorbing power fluctuation in the DC main circuit 3 is provided in the DC main circuit 3.