POWER SYSTEM ASSOCIATED WITH NEW REGENERATION ENERGY CAPABLE OF SUPPLYING POWER BOTH FROM GRID TO LOAD AND VICE VERSA

摘要

The present invention relates to a power system associated with new regeneration energy which stably supplies commercial power to a grid associated with a new regeneration energy source, and stabilizes an AC power supplied from the grid to a load. The power system associated with new regeneration energy comprises: a grid supplying the commercial power; a new regeneration energy supply part having a plurality of new regeneration energy sources and supplying the AC power for stabilizing the commercial power to the grid; and a load energy supply part having first and second switches, a battery, a two-way converter, a power controller, a DC-AC converter, and a switching controller. The first switch selectively supplies the AC power from the grid to the load. The battery is charged by a DC power and supplies a DC source voltae by using the charged power. The two-way converter converts the AC power to the DC power, and converts the DC power to the AC power to be supplied to the grid. The power controller controls the conversion operation of the two-way converter. The DC-AC converter converts the DC power to the AC power. The second switch has an on/off state opposite to that of the first switch and selectively supplies the DC power from the DC-AC converter to the load. The switching controller controls the switching operation of the first and second switches corresponding to stable and unstable states of the commercial power based on a control signal from the power controller.;COPYRIGHT KIPO 2014;[Reference numerals] (100) New renewable energy source; (14,150) Battery; (170) Generator; (20,140) Power control part; (22) Switching control part; (30) Load