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    12.
    发明专利
    未知

    公开(公告)号：DE19743658A1

    公开(公告)日：1999-04-08

    申请号：DE19743658

    申请日：1997-10-02

    Applicant: ABB RESEARCH LTD

    Inventor： BOHNERT KLAUS DR ,  BRAENDLE HUBERT DR ,  GABUS PHILIPPE ,  KOSTOVIC JADRAN ,  TALIR JIRI

    IPC: G01R15/24

    Abstract: The spacers (5) are electrically conductive and contact adjacent sensor sections (2). The voltage sensor (1) high tension section is qualified for open air use. This derives from the high tension dielectric and protective screen (against weather) surrounding the assembly of sensor- and spacer sections. The sensor is made of individual sections, and a continuous sensor fiber (4a). In each section, a given length of optical fiber is fastened to the body (3) such that its length is varied only by E-field components parallel to the sensor axis. The amplification factor of each section is proportional to its length, in correspondence with the piezoelectrically-induced length variation of the fiber. Sensor sections and spacers are cylindrical and aligned along the sensor axis. Between sensors and spacers, there are conductive flexible holders (6). The holders include inner- and control electrodes, with spring sections. Inner electrodes bond and interlock with the end surfaces of sensor elements. Control electrodes are fastened onto the inner electrodes. Spring sections connect the inner electrodes to adjacent spacer sections. The dielectric is an elastomer or insulating fluid. The protecting screen is an elastomer with additional support insulator. The silicone body may have an additional fiberglass-reinforced plastic insulating rod. A version using a dielectric of transformer- or silicone oil is also described. The connection contacts (1a) of the high tension section comprise flanges, a hanger and a corona- and/or voltage control ring. An earthing and anchoring cable is included.

    14.
    发明专利
    未知

    公开(公告)号：DE50311787D1

    公开(公告)日：2009-09-17

    申请号：DE50311787

    申请日：2003-11-06

    Applicant: ABB RESEARCH LTD

    Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

    IPC: G02B6/44

    Abstract: The high-frequency insulator (9) is shaped as a hollow cylinder with a set of circumferential insulating fins (3) on the outside. There is a large voltage difference between the upper (1) and lower (2) ends of the insulator. An optical fiber (4) is threaded through a capillary channel (5) which may run in a spiral from the upper to the lower end. The capillary channel is filled with a protective medium (6).

    15.
    发明专利
    未知

    公开(公告)号：AT377195T

    公开(公告)日：2007-11-15

    申请号：AT03405641

    申请日：2003-09-03

    Applicant: ABB RESEARCH LTD

    Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

    IPC: G01R15/24 ,  G01R33/032

    Abstract: The sensor head (2) has a capillary (6) in which a sensor fiber is arranged. The sensor head is bendable in the region of a sensor fiber (3). Oil or powder (7) is provided in the capillary for reducing friction between the sensor fiber and the capillary. An independent claim is included for a current sensor or a magnetic field sensor.

    18.
    发明专利
    未知

    公开(公告)号：AT554400T

    公开(公告)日：2012-05-15

    申请号：AT09171887

    申请日：2009-09-30

    Applicant: ABB RESEARCH LTD

    Inventor： WUEEST ROBERT ,  FRANK ANDREAS ,  BOHNERT KLAUS ,  GABUS PHILIPPE

    IPC: G01R3/00 ,  G01R15/24 ,  G01R33/032

    Abstract: For tuning the fiber optic retarder (4) of a fiber optic current sensor towards a desired temperature dependence, the sensing fiber (5) is exposed to a magnetic field or corresponding electric current and the sensor signal as well as the signal's dependence on the retarder temperature are measured From this initial sensor signal and its temperature dependence, a target sensor signal can be determined, at which the dependence on the retarder temperature equals a desired value. Then, the retarder (4) is thermally treated until the sensor signal reaches the target value. The method obviates the need for repetitively measuring the temperature dependence during the tuning process.

    19.
    发明专利
    未知

    公开(公告)号：AT438872T

    公开(公告)日：2009-08-15

    申请号：AT03757630

    申请日：2003-11-06

    Applicant: ABB RESEARCH LTD

    Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

    IPC: G02B6/44

    Abstract: The high-frequency insulator (9) is shaped as a hollow cylinder with a set of circumferential insulating fins (3) on the outside. There is a large voltage difference between the upper (1) and lower (2) ends of the insulator. An optical fiber (4) is threaded through a capillary channel (5) which may run in a spiral from the upper to the lower end. The capillary channel is filled with a protective medium (6).

    20.
    发明专利
    未知

    公开(公告)号：DE50308498D1

    公开(公告)日：2007-12-13

    申请号：DE50308498

    申请日：2003-09-03

    Applicant: ABB RESEARCH LTD

    Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

    IPC: G01R15/24 ,  G01R33/032

    Abstract: The sensor head (2) has a capillary (6) in which a sensor fiber is arranged. The sensor head is bendable in the region of a sensor fiber (3). Oil or powder (7) is provided in the capillary for reducing friction between the sensor fiber and the capillary. An independent claim is included for a current sensor or a magnetic field sensor.

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