发明名称 |
Fiber-optic voltage sensor for outdoor high-voltage installations |
摘要 |
The subject matter of the present invention is a fiber-optic outdoor high-voltage sensor 1. The known sensor principle is based on the fact that a piezoelectric quartz cylinder 3 wound with a glass fiber 4a effects a voltage-proportional fiber strain which is measured interferometrically. According to the invention, a 420 kV outdoor sensor 1 is created by virtue of the fact that several quartz cylinders 3 and electrically conductive spacing elements 5 are arranged in an alternating fashion one behind another and are sealed in a silicone-shielded 17 insulating tube 16 by means of polyurethane 18 or silicone 21. Dividing the high voltage between several spaced, E-field integrating sensor elements 2 permits simple field control and a very high measuring accuracy. In addition, the fiber-optic voltage sensor 1 is distinguished by a low outlay on insulation, compactness and low weight, and can easily be scaled to other voltage levels and be effectively combined with optical current sensors 38.
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申请公布号 |
US6140810(A) |
申请公布日期 |
2000.10.31 |
申请号 |
US19980165648 |
申请日期 |
1998.10.02 |
申请人 |
ABB RESEARCH LTD. |
发明人 |
BOHNERT, KLAUS;BRAENDLE, HUBERT;GABUS, PHILIPPE;KOSTOVIC, JADRAN;TALIR, JIRI |
分类号 |
G01R15/24;(IPC1-7):G01R15/24;G01R29/12 |
主分类号 |
G01R15/24 |
代理机构 |
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