发明授权
- 专利标题: Method and testing device for measuring partial discharge pulses of a shielded cable
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申请号: US16632903申请日: 2018-04-26
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公开(公告)号: US11125802B2公开(公告)日: 2021-09-21
- 发明人: Erik Winkelmann
- 申请人: Maschinenfabrik Reinhausen GmbH
- 申请人地址: DE Regensburg
- 专利权人: Maschinenfabrik Reinhausen GmbH
- 当前专利权人: Maschinenfabrik Reinhausen GmbH
- 当前专利权人地址: DE Regensburg
- 代理机构: Leydig, Voit & Mayer, Ltd.
- 优先权: DE102017116613.0 20170724
- 国际申请: PCT/EP2018/060698 WO 20180426
- 国际公布: WO2019/020225 WO 20190131
- 主分类号: G01R31/12
- IPC分类号: G01R31/12 ; G01R31/08 ; G01R31/14
摘要:
A method measures partial discharge pulses of a shielded cable, which has a core and a sheath. The method includes: connecting a coupling capacitor with a first connecting point of the core; providing a first, second, and third coupling unit, each having an input and a signal output; connecting the input of the first coupling unit with the coupling capacitor; connecting the input of the second coupling unit with a first connecting point of the sheath; connecting the input of the third coupling unit with a second connecting point of the sheath; providing a test voltage at the first connecting point of the core; acquiring respective measurement signals of the coupling units at their signal outputs; and determining at least one characteristic value for an apparent charge of a partial discharge pulse of the cable in dependence on the measurement signals.
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