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Title:
ON-LOAD TAP-CHANGER AND METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/192273
Kind Code:
A1
Abstract:
An on-load tap-changer and a method therefor, comprising primary switches (K01, K02, K03, K04, K05), thyristor auxiliary circuits (I1, II2), and selector switches (K11, K12, K13, K14, K22, K3, K24, K25); each primary switch (K01, K02, K03, K04, K05) is respectively connected in series in a different loop of a voltage regulating coil of a voltage regulating transformer (T1) by means of at least one tap; when any one of the primary switches (K01, K02, K03, K04, K05) is closed, the voltage regulating coil may form a current circulation path; when different primary switches (K01, K02, K03, K04, K05) are closed, the voltage regulating transformer (T1) outputs different voltages; when any one of the primary switches (K01, K02, K03, K04, K05) is connected in parallel to one thyristor auxiliary circuit (I1, II2) by means of the selector switches (K11, K12, K13, K14, K22, K3, K24, K25), another primary switch (K01, K02, K03, K04, K05) close thereto may be connected in parallel to another thyristor auxiliary circuit (I1, II2) by means of the selector switches (K11, K12, K13, K14, K22, K3, K24, K25); a switcher of two primary switches (K01, K02, K03, K04, K05) respectively connected in parallel to the thyristor auxiliary circuits (I1, II2) is formed; the on-load tap-changer does not comprise a common switcher therein; each switch operates sequentially to achieve the on-load switching of a load current from originally closed primary switches (K01, K02, K03, K04, K05) to primary switches (K01, K02, K03, K04, K05) to be closed.

Inventors:
LI, Xiaoming (Room 202, Unit 3 Building 16, South area, Shunyu village, Shunyu Road, Shizhong Distric, Jinan Shandong 2, 250002, CN)
Application Number:
CN2019/076405
Publication Date:
October 10, 2019
Filing Date:
February 28, 2019
Export Citation:
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Assignee:
LI, Xiaoming (Room 202, Unit 3 Building 16, South area, Shunyu village, Shunyu Road, Shizhong Distric, Jinan Shandong 2, 250002, CN)
International Classes:
H03K17/081
Foreign References:
CN108768359A2018-11-06
CN103633978A2014-03-12
CN104113317A2014-10-22
CN2862287Y2007-01-24
CN204884832U2015-12-16
US4571499A1986-02-18
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD. (Room 308, Block B Huate Square,No.17703, Jingshi Road, Jinan Shandong 1, 250061, CN)
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