Title:
NOVEL COUPLING POWER FAULT CURRENT LIMITER
Document Type and Number:
WIPO Patent Application WO/2017/193983
Kind Code:
A1
Abstract:
A coupling power fault current limiter, comprising an iron core (100) and a plurality of coils (200). The iron core comprises a plurality of iron core posts (101) which are connected in parallel. The plurality of coils comprises at least one alternating current coil (201) and a direct current coil (202). At least one alternating current coil is wound around each of the plurality of iron core posts. The direct current coil is simultaneously wound around the plurality of iron core posts. Two or more iron core posts wound with the at least one alternating current coil are connected in parallel, and the alternating current coils connected in parallel, as a whole, are connected in series to an alternating current power transmission loop (300). The direct current coil simultaneously wound around the plurality of iron core posts is connected in series to a direct current excitation power supply system (400). The current limiter has a low impedance in a normal running state and a high impedance in a short-circuit fault condition; the switching between high impedance and low impedance can be quick implemented, and the excessive high short-circuit current in a power system is effectively limited.
Inventors:
SONG MENG (CN)
XIA YAJUN (CN)
MEI GUIHUA (CN)
LUO YUNSONG (CN)
CHENG WENFENG (CN)
LI LI (CN)
CHEN XUN (CN)
XIA YAJUN (CN)
MEI GUIHUA (CN)
LUO YUNSONG (CN)
CHENG WENFENG (CN)
LI LI (CN)
CHEN XUN (CN)
Application Number:
PCT/CN2017/084065
Publication Date:
November 16, 2017
Filing Date:
May 12, 2017
Export Citation:
Assignee:
ELECTRIC POWER RES INSTITUTE OF GUANGDONG POWER GRID CO LTD (CN)
International Classes:
H02H9/02; H01F37/00
Domestic Patent References:
| WO2007029224A1 | 2007-03-15 |
Foreign References:
| CN105811387A | 2016-07-27 | |||
| CN103647264A | 2014-03-19 | |||
| CN105391039A | 2016-03-09 | |||
| CN101521374A | 2009-09-02 | |||
| SU1089640A1 | 1984-04-30 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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