STABLE POWER SUPPLY SYSTEM, OPERATION METHOD THEREOF, AND STABLE POWER SUPPLY OPERATION PROGRAM

摘要

A commercial power-system and a private power-generating system are connected via a high-speed current-limiting breaker (4). The commercial power-system supplies power to each important load (6) via a first system (A). Each overlap switch (8) is provided at each interlinkage point of the first system (A) and a second system (B). Each overlap switch (8) is switched step-by-step based on output of a private power generator (2) so that the first system (A) is disconnected, therefore, the private power-generating system supplies power to the important load (6). If there is a surge in the commercial power-system, the high-speed current-limiting breaker (4) limits an over-current and interrupts power supply quickly to protect the important load (6).