SYSTEM INTERCONNECTION DEVICE FOR POWER PURCHASE SYSTEM ADAPTABLE TO EMERGENCY SITUATION OF POWER SYSTEM OF DISASTER, AND EMERGENCY OUTPUT METHOD OF POWER DURING EMERGENCY EVACUATION OF DISASTER USING SYSTEM INTERCONNECTION DEVICE FOR POWER PURCHASE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system interconnection device for power purchase with no power factor lag, by preventing connection of a load between a power conditioner and an interconnection point, with a compact configuration that can be interconnected with a high voltage or extra-high voltage system of an electric power company.SOLUTION: A system interconnection device for power purchase which supplies power generated by photovoltaic power generation or wind power generation to an existing high voltage power system includes: a power conditioner having an inverter and a reactor for converting a DC power generated into an AC power; a step-up transformer for converting the AC power output from the power conditioner into a high voltage; and a switch disposed between the step-up transformer and the existing high voltage power system and outputting power to another system. The power conditioner, the step-up transformer and a circuit breaker are disposed in a housing.