Invention Grant
- Patent Title: HVDC transmission schemes
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Application No.: US17050739Application Date: 2019-04-11
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Publication No.: US11837867B2Publication Date: 2023-12-05
- Inventor: Chandra Mohan Sonnathi , Radnya Anant Mukhedkar , Jordann Raymond Martial Brionne , Damien Pierre Gilbert Fonteyne
- Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
- Applicant Address: CH Baden
- Assignee: General Electric Technology GmbH
- Current Assignee: General Electric Technology GmbH
- Current Assignee Address: CH Baden
- Agency: Eversheds Sutherland (US) LLP
- International Application: PCT/EP2019/059353 2019.04.11
- International Announcement: WO2019/206671A 2019.10.31
- Date entered country: 2020-10-26
- Main IPC: H02J3/36
- IPC: H02J3/36 ; H02J3/00 ; H02H1/00 ; H02H7/26

Abstract:
The present invention provides a high voltage direct current (HVDC) transmission system (300, 600) comprising: a first station (102) comprising series-connected first and second HVDC converters (110, 130); a second station (104) comprising series-connected third and fourth HVDC converters (150, 170), wherein a neutral node (164) coupling the third HVDC converter (150) to the fourth HVDC converter (170) is coupled to earth; a first transmission line (200) connecting a positive node (114) of the first HVDC converter (110) to a corresponding positive node (154) of the third HVDC converter (150), wherein a first pole (240) of the system (300, 600) comprises the first HVDC converter (110), the third HVDC converter (150) and the first transmission line (200); a second transmission line (210) connecting a negative node (138) of the second HVDC converter (130) to a corresponding negative node (178) of the fourth HVDC converter (170), wherein a second pole (250) of the system (300, 600) comprises the second HVDC converter (130), the fourth HVDC converter (170) and the second transmission line (210); characterised in that: a neutral node (124) connecting the first HVDC converter (110) to the second HVDC converter (130) is coupled to a parallel combination of a resistance (310) and a neutral bus ground switch (312) for coupling the neutral node (124) to earth.
Public/Granted literature
- US20210119444A1 HVDC TRANSMISSION SCHEMES Public/Granted day:2021-04-22
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