Title:
DEVICE FOR INHIBITING HARMONIC AMPLIFICATION ON THE THIRD WINDING SIDE OF EXTRA-HIGH VOLTAGE /ULTRA-HIGH VOLTAGE TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2011/020302
Kind Code:
A1
Abstract:
A device for inhibiting harmonic amplification on the third winding side of an extra-high voltage/ ultra-high voltage transformer includes at least two groups of parallel capacitors (101a, 101b). Each group of parallel capacitors comprises three capacitors (Xc1, Xc2) and three reactors (XL1, XL2), wherein after each capacitor is connected in series with a reactor to form three series circuits, the three series circuits are connected in parallel. The capacities of all capacitors in the groups of parallel capacitors are equal. At least one group of parallel capacitors has a first series reactance ratio, while other groups of parallel capacitors have a second series reactance ratio. The said first series reactance ratio is different from the said second series reactance ratio. The device can inhibit harmonic amplification on the third winding side of the extra-high voltage/ ultra-high voltage transformer.
Inventors:
ZHANG ZHIQIANG (CN)
XIANG ZUTAO (CN)
BAN LIANGENG (CN)
LIN JIMING (CN)
WANG XIAOTONG (CN)
WANG XIAOGANG (CN)
SUN GANG (CN)
QIU NING (CN)
XIANG ZUTAO (CN)
BAN LIANGENG (CN)
LIN JIMING (CN)
WANG XIAOTONG (CN)
WANG XIAOGANG (CN)
SUN GANG (CN)
QIU NING (CN)
Application Number:
PCT/CN2010/001257
Publication Date:
February 24, 2011
Filing Date:
August 19, 2010
Export Citation:
Assignee:
CHINA ELECTRIC POWER RES INST (CN)
STATE GRID CORP CHINA (CN)
ZHANG ZHIQIANG (CN)
XIANG ZUTAO (CN)
BAN LIANGENG (CN)
LIN JIMING (CN)
WANG XIAOTONG (CN)
WANG XIAOGANG (CN)
SUN GANG (CN)
QIU NING (CN)
STATE GRID CORP CHINA (CN)
ZHANG ZHIQIANG (CN)
XIANG ZUTAO (CN)
BAN LIANGENG (CN)
LIN JIMING (CN)
WANG XIAOTONG (CN)
WANG XIAOGANG (CN)
SUN GANG (CN)
QIU NING (CN)
International Classes:
H01F27/34; H02J3/01
Domestic Patent References:
| WO2007086033A1 | 2007-08-02 |
Foreign References:
| CN101656144A | 2010-02-24 | |||
| CN201174598Y | 2008-12-31 |
Other References:
YANG, FENYAN ET AL.: "Selection of Series Reactance Ratio of Capacitors Groups in Transformer Substation in AC/ DC Mixed Network", ELECTRIC POWER AUTOMATION EQUIPMENT, vol. 29, no. 6, 30 June 2009 (2009-06-30), pages 29 - 33
ZHANG, ZHIQIANG ET AL.: "Analysis of Series Reactance Ratio of 110 kV Side Capacitors Groups in 1000kV AC Ultra-High Voltage Test Demonstration Project Transformer Substation", ELECTRIC POWER, vol. 40, no. 12, 31 December 2007 (2007-12-31), pages 36, 39, 41 - 42
ZHANG, ZHIQIANG ET AL.: "Analysis of Series Reactance Ratio of 110 kV Side Capacitors Groups in 1000kV AC Ultra-High Voltage Test Demonstration Project Transformer Substation", ELECTRIC POWER, vol. 40, no. 12, 31 December 2007 (2007-12-31), pages 36, 39, 41 - 42
Attorney, Agent or Firm:
CCPIT PATENT & TRADEMARK LAW OFFICE (CN)
中国国际贸易促进委员会专利商标事务所 (CN)
中国国际贸易促进委员会专利商标事务所 (CN)
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