Method for insulation monitoring of a converter-supplied power supply system
US-2020081072-A1 · Mar 12, 2020 · US
Method for the continuous insulation monitoring of an electrical conductor arrangement
US11005256B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11005256-B2 |
| Application number | US-201916404820-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 7, 2019 |
| Priority date | May 8, 2018 |
| Publication date | May 11, 2021 |
| Grant date | May 11, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Method for the continuous insulation monitoring of an electrical conductor arrangement (12) with an active conductor (3) and a conductor structure (14) electrically insulated from the active conductor (3), wherein the quality of the conductor arrangement (12) as well as the arrangement of the active conductor (3) and the conductor structure (14) is such that almost identical propagation conditions for the active conductor (3) and the conductor structure (14) apply to a current flow against ground (E), wherein an insulation resistance measurement is being carried out, wherein an insulation monitoring unit (20) is connected between the conductor structure (14) and ground (E), which superimposes a measurement voltage onto the electrical conductor arrangement (12), which generates a measurement current proportionally to the insulation resistance of the conductor arrangement (12), which is acquired in the insulation resistance measurement unit (20) and evaluated.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for the continuous insulation monitoring of an electrical conductor arrangement ( 12 ) with an active conductor ( 3 ) and a conductor structure ( 14 ) electrically insulated from the active conductor ( 3 ), wherein the quality of the conductor arrangement ( 12 ) as well as the arrangement of the active conductor ( 3 ) and the conductor structure ( 14 ) is such that almost identical propagation conditions for the active conductor ( 3 ) and the conductor structure ( 14 ) apply to a current flow against ground (E), comprising the method steps: carrying out an insulation resistance measurement, wherein an insulation monitoring unit ( 20 ) is connected between the conductor structure ( 14 ) and ground (E), which superimposes a measurement voltage onto the electrical conductor arrangement ( 12 ), which generates a measurement current proportionally to the insulation resistance of the conductor arrangement ( 12 ) without integrating the active conductor ( 3 ) into a measurement circuit, the measurement current being acquired in the insulation resistance measurement unit ( 20 ) and evaluated. 2. The method according to claim 1 , characterized in that one or a plurality of conductors ( 26 ), not carry operating current, of the conductor arrangement ( 12 ) is/are used as the conductor structure ( 14 ). 3. The method according to claim 1 , characterized in that a shielding layer ( 36 ) is used as a conductor structure ( 14 ). 4. The method according to claim 1 , characterized in that, in the case of a transformer ( 38 ) as a conductor arrangement ( 12 ), a capacitively earthed shielding winding ( 46 ) of the transformer ( 38 ) is used as a conductor structure ( 14 ). 5. An application of the method according to claim 1 , for the continuous insulation monitoring of an electrical conductor arrangement ( 12 ) of an unearthed power supply system ( 2 ). 6. An application of the method according to claim 1 for the continuous insulation monitoring of an electrical conductor arrangement of an earthed power supply system.
Assignees
Inventors
Classifications
- G01R31/62Primary
Testing of transformers · CPC title
Testing of lines, cables or conductors (testing of electric windings G01R31/72) · CPC title
Measuring resistance by measuring current or voltage obtained from a reference source (G01R27/16, G01R27/20, G01R27/22 take precedence) · CPC title
- H02H5/105Primary
responsive to deterioration or interruption of earth connection (for preventing switching-on H02H11/001) · CPC title
Measuring resistance by measuring both voltage and current · CPC title
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- What does patent US11005256B2 cover?
- Method for the continuous insulation monitoring of an electrical conductor arrangement (12) with an active conductor (3) and a conductor structure (14) electrically insulated from the active conductor (3), wherein the quality of the conductor arrangement (12) as well as the arrangement of the active conductor (3) and the conductor structure (14) is such that almost identical propagation conditi…
- Who is the assignee on this patent?
- Bender Gmbh & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification G01R31/62. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 11 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).