COMMUNICATION SYSTEM FOR OIL-IMMERSED CASCADED SVG, AND METHOD

WIPO Patent Application WO/2021/237861

A1

A communication system for an oil-immersed cascaded SVG of the present invention comprises an SVG controller, photoelectric isolation units, electro-optical isolation units, power unit control panels and an oil tank, wherein the photoelectric isolation units and electro-optical isolation units are all arranged on the wall of the oil tank; the power unit control panels are located in the oil tank; the SVG controller is located outside the oil tank; an optical fiber is used for communication outside the oil tank; and a twisted pair is used for communication inside the oil tank. A control method for the communication system of the present invention comprises: a) sending an instruction message; b) converting and receiving a signal; c) decoding the instruction message; d) returning a data message; and e) an SVG controller sending an instruction message. According to the communication system for an oil-immersed cascaded SVG, and the method of the present invention, an isolation effect between a high voltage and a low voltage is achieved; communication by means of a twisted pair avoids an optical fiber communication problem of an optical fiber seat arranged in an oil tank caused by oil aging turbidity; and using an annular communication loop avoids the arrangement of too many cables in the oil tank, thereby simplifying the structure of the oil tank.

HU SHUNQUAN (CN)
HOU RONGFANG (CN)
PEI BAOFENG (CN)
LI ZHIGANG (CN)
SU LIUJUN (CN)
SONG LINLIN (CN)
YAO HAIJIA (CN)

PCT/CN2020/098320

December 02, 2021

June 26, 2020

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WINDSUN SCIENCE & TECH CO LTD (CN)

H02J13/00

CN203014387U	2013-06-19
US20170070086A1	2017-03-09
CN103529733A	2014-01-22

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