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Title:
HYBRID DIRECT CURRENT CONVERTER VALVE GROUP ONLINE FEED CIRCUIT AND FEED METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/227979
Kind Code:
A1
Abstract:
Disclosed in the present invention is a hybrid direct current converter valve group online feed circuit, used for online feed of a voltage source converter, at least comprising a valve group connecting line connection switch or knife switch of a voltage source-type valve group unit, a direct current bus connection switch or knife switch of the voltage source-type valve group unit, a bypass switch or knife switch of the voltage source-type valve group unit, and a bypass switch or knife switch of a current source-type valve group unit; or at least comprising a valve group connecting line connection switch or knife switch of the voltage source-type valve group unit, a neutral bus connection switch or knife switch of the voltage source-type valve group unit, a bypass switch or knife switch of the voltage source-type valve group unit, and a bypass switch or knife switch of the current source-type valve group unit. Also disclosed in the present invention are a hybrid direct current converter valve group online feed method and apparatus: first unlocking a voltage source converter; connecting the voltage source converter in parallel to the two ends of a power grid commutation converter; locking the power grid commutation converter; connecting the power grid commutation converter in series to the voltage source converter; and online feed of the power grid commutation converter.

Inventors:
LU DONGBIN (CN)
LI HAIYING (CN)
CHEN SONGLIN (CN)
ZOU QIANG (CN)
Application Number:
CN2019/075673
Publication Date:
December 05, 2019
Filing Date:
February 21, 2019
Export Citation:
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Assignee:
NR ELECTRIC CO LTD (CN)
NR ENG CO LTD (CN)
International Classes:
H02J3/36
Foreign References:
CN108683207A2018-10-19
CN104578130A2015-04-29
CN107732954A2018-02-23
CN104753079A2015-07-01
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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