SUB-SYSTEM CONNECTING DEVICE IN POWER SUPPLY SYSTEM,申请号KR20010072889-传众专利搜索

SUB-SYSTEM CONNECTING DEVICE IN POWER SUPPLY SYSTEM

申请公布号：KR20030042222(A)

申请号：KR20010072889

申请日期：2001.11.22

申请公布日期：2003.05.28

申请人：

XELPOWER CO., LTD.

发明人：LEE, JAE GYEONG

分类号：H02H7/22;(IPC1-7):H02H7/22

主分类号：H02H7/22

摘要：PURPOSE: A sub-system connecting device in power supply system is provided to reduce the time required to separate a system from time when a trouble generates by detecting a ground fault and a short trouble of a commercial receiving generator through a detecting unit installed on the commercial receiving generator to separate a commercial power system from a dispersing power system. CONSTITUTION: A voltage detecting unit(150) is installed on a commercial receiving generator(WA). When momentary dropping of voltage level is detected by the voltage detecting unit(150), a voltage level detecting unit(140) generates a detecting signal. A control unit(170) determines whether or not a commercial power system is failure based on the detected signal generated from the voltage level detecting unit(140) to output a system separating signal according to the determined result. When the system separating signal is not outputted from the control unit(170), a switching unit connects the commercial receiving generator(WA) and a non-utility generation generator(WB). Otherwise, the switching unit breaks out the connection of the commercial receiving generator(WA) and a non-utility generation generator(WB).