Title:
VACUUM ON-LOAD TAP CHANGER DOUBLE VACUUM TUBE RECIPROCATING TRANSITION CIRCUIT AND SWITCHING CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/193522
Kind Code:
A1
Abstract:
A vacuum on-load tap changer double vacuum tube reciprocating transition circuit and a switching control method thereof. One ends of a first main switch M1 and a second main switch M2 in the circuit are connected to a first winding tap N and a second winding tap N+1, respectively. A first switching switch T1 has at least one steady state where the first winding tap N is turned on and a steady state where the second winding tap N+1 is turned on. A second switching switch T2 has at least three steady states, i.e., at least one steady state where the first winding tap N is turned on, a steady state where the second winding tap N+1 is turned on, and a steady state where any winding tap is not turned on. One end of a first vacuum tube V1 is connected to the first switching switch T1. One end of a second vacuum tube V2 is connected to the second switching switch T2, and the other end of the second vacuum tube V2 is connected to a transition resistor R in series. The other ends of the first main switch M1, the second main switch M2, the first vacuum tube V1, and the transition resistor R are all electrically connected to a neutral point leading-out end of an on-load tap changer. The circuit has the advantages of a small number of required vacuum tubes, short switching time, less heating of the transition resistor, etc., and ensures that the time series of the tap changer in the forward/reverse switching process is the same.
Inventors:
XING LIHUA (CN)
LI ZHUANGZHUANG (CN)
WANG YANLI (CN)
TIAN XIU (CN)
SUN YAPENG (CN)
LYU JUNPING (CN)
LUO HUI (CN)
ZOU JUNDUAN (CN)
LI ZHUANGZHUANG (CN)
WANG YANLI (CN)
TIAN XIU (CN)
SUN YAPENG (CN)
LYU JUNPING (CN)
LUO HUI (CN)
ZOU JUNDUAN (CN)
Application Number:
PCT/CN2021/108798
Publication Date:
September 22, 2022
Filing Date:
July 28, 2021
Export Citation:
Assignee:
BEIJING AEROSPACE CONTROL DEVICE INST (CN)
International Classes:
H01F29/04
Domestic Patent References:
| WO2011085763A1 | 2011-07-21 |
Foreign References:
| CN113113261A | 2021-07-13 | |||
| CN102832075A | 2012-12-19 | |||
| CN104737249A | 2015-06-24 |
Attorney, Agent or Firm:
PATENT AGENT OF CHINA AEROSPACE TECHNOLOGY (CN)
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