Title:
DISTRIBUTION BOARD FOR PROTECTION CONTROL, AND PROTECTION CONTROL SYSTEM FOR ELECTRIC POWER STATION
Document Type and Number:
WIPO Patent Application WO/2014/141727
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce correctness verification work due to operation disunity of each device, when restoring power supply after an unexpected occurrence of under voltage and when switching on power en bloc after control-power-supply cut off in a DC distribution board. A DC distribution board (10) divides a power supply of a control power supply (1), and provides a power supply to a plurality of devices. Furthermore, the DC distribution board (10) is provided with: an AC/DC power supply device (13) which receives a power supply provided from an AC uninterruptible power supply (2); an under-voltage relay (14) which is driven by the AC/DC power supply device, and with which a contact point is closed if the control power supply (1) becomes equal to or less than a set voltage; and an auxiliary relay (15) which, as a result of energization of a coil when the contact point is closed, inhibits operation of circuits inside the plurality of devices.
Inventors:
MIYAGI KENGO (JP)
MATSUDA SHINJI (JP)
OKUDA MINORU (JP)
MATSUDA SHINJI (JP)
OKUDA MINORU (JP)
Application Number:
PCT/JP2014/050185
Publication Date:
September 18, 2014
Filing Date:
January 09, 2014
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H02H3/05
Foreign References:
| JP2013048556A | 2013-03-07 | |||
| JPH0289452A | 1990-03-29 | |||
| JP2009152693A | 2009-07-09 | |||
| JP2002027659A | 2002-01-25 |
Attorney, Agent or Firm:
KIUCHI, MITSUHARU (JP)
Mitsuharu Kiuchi (JP)
Mitsuharu Kiuchi (JP)
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