US3887915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for detecting dielectric breakdowns in metal-clad high-voltage switching and transmission installations
Assignee: Siemens AG
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Filing: 1974-03-18
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Granted: 1975-06-03
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Expires: 1994-03-18
Abstract
Abstract An arrangement for detecting dielectric breakdowns in highvoltage installations with several gastight, compartmentalized sections includes at least one stationary measuring device at the section wherein a fault can occur. The measuring device is connected with an evaluation control arrangement for operation in combination therewith. The measuring device is an electroacoustic transducer which picks up the sound waves generated at the breakdown point and is connected with the control arrangement through frequency and amplitude dependent filters.
Inventors
- 👤 Willi Olsen
- 👤 Manfred Lieske
- 👤 Wolfgang Ehmann
- 👤 Gerhard Perst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:42
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H02B13/065
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
229 words
An arrangement for detecting dielectric breakdowns in a metal-encapsulated, high-voltage installation such as an equipment suitable for switching and transmitting high-voltages made up of a plurality of component sections sealed gastight one with respect to the other wherein breakers open and close causing an interrupting arc of known duration to be drawn during a breaker opening operation and wherein a dielectric breakdown is accompanied by a fault arc having noise frequency approximately the same as that of the interrupting arc, the arrangement operating in combination with a network protection device for issuing a signal in response to the presence of a fault in the installation, the arrangement comprising: electroacoustic transducer means disposed at a component section for detecting the sound waves generated by the fault arc and transmitted by the encapsulation; filter means for blocking signals from said transducer means having a frequency other than that of the fault arc; amplitude means for passing only said signals from said transducer means having a minimum amplitude whereby signals below said amplitude are not transmitted; time delay means for passing said signals from said transducer means having a duration greater than the duration of the interrupting arc; and, evaluation control means for issuing a signal indicative of a fault in response to the presence simultaneously of a signal from said time delay means and a signal from the network protection device.
Claim 2
Dependent Claim
229 words
An arrangement for detecting dielectric breakdowns in a metal-encapsulated, high-voltage installation such as an equipment suitable for switching and transmitting high-voltages made up of a plurality of component sections sealed gastight one with respect to the other wherein breakers open and close causing an interrupting arc of known duration to be drawn during a breaker opening operation and wherein a dielectric breakdown is accompanied by a fault arc having noise frequency approximately the same as that of the interrupting arc, the arrangement operating in combination with a network protection device for issuing a signal in response to the presence of a fault in the installation, the arrangement comprising: electroacoustic transducer means disposed at a component section for detecting the sound waves generated by the fault arc and transmitted by the encapsulation; filter means for blocking signals from said transducer means having a frequency other than that of the fault arc; amplitude means for passing only said signals from said transducer means having a minimum amplitude whereby signals below said amplitude are not transmitted; time delay means for passing said signals from said transducer means having a duration greater than the duration of the interrupting arc; and, evaluation control means for issuing a signal indicative of a fault in response to the presence simultaneously of a signal from said time delay means and a signal from the network protection device.
Claim 3
Dependent Claim
229 words
An arrangement for detecting dielectric breakdowns in a metal-encapsulated, high-voltage installation such as an equipment suitable for switching and transmitting high-voltages made up of a plurality of component sections sealed gastight one with respect to the other wherein breakers open and close causing an interrupting arc of known duration to be drawn during a breaker opening operation and wherein a dielectric breakdown is accompanied by a fault arc having noise frequency approximately the same as that of the interrupting arc, the arrangement operating in combination with a network protection device for issuing a signal in response to the presence of a fault in the installation, the arrangement comprising: electroacoustic transducer means disposed at a component section for detecting the sound waves generated by the fault arc and transmitted by the encapsulation; filter means for blocking signals from said transducer means having a frequency other than that of the fault arc; amplitude means for passing only said signals from said transducer means having a minimum amplitude whereby signals below said amplitude are not transmitted; time delay means for passing said signals from said transducer means having a duration greater than the duration of the interrupting arc; and, evaluation control means for issuing a signal indicative of a fault in response to the presence simultaneously of a signal from said time delay means and a signal from the network protection device.
Claim 4
Dependent Claim
229 words
An arrangement for detecting dielectric breakdowns in a metal-encapsulated, high-voltage installation such as an equipment suitable for switching and transmitting high-voltages made up of a plurality of component sections sealed gastight one with respect to the other wherein breakers open and close causing an interrupting arc of known duration to be drawn during a breaker opening operation and wherein a dielectric breakdown is accompanied by a fault arc having noise frequency approximately the same as that of the interrupting arc, the arrangement operating in combination with a network protection device for issuing a signal in response to the presence of a fault in the installation, the arrangement comprising: electroacoustic transducer means disposed at a component section for detecting the sound waves generated by the fault arc and transmitted by the encapsulation; filter means for blocking signals from said transducer means having a frequency other than that of the fault arc; amplitude means for passing only said signals from said transducer means having a minimum amplitude whereby signals below said amplitude are not transmitted; time delay means for passing said signals from said transducer means having a duration greater than the duration of the interrupting arc; and, evaluation control means for issuing a signal indicative of a fault in response to the presence simultaneously of a signal from said time delay means and a signal from the network protection device.
Claim 5
Dependent Claim
83 words
The arrangement of claim 1 wherein the component sections are sealed one with respect to the other by respective bulkheads, and wherein said electroacoustic transducer means, said filter means, said amplitude means and said time delay means are serially connected to conjointly define a breakdown detection device, said arrangement comprising a plurality of said detection devices corresponding to respective ones of the component sections, said transducer means of each of said detection devices being arranged at the bulkhead corresponding to each component section.
Claim 6
Dependent Claim
14 words
The arrangement of claim 2, each of said transducer means being a contact microphone.
Claim 7
Dependent Claim
38 words
The arrangement of claim 2, circuit means for receiving the output signals of each of said transducer means for identifying the transducer means issuing an output signal indicative of a dielectric breakdown in the component section corresponding thereto.
Claim 8
Dependent Claim
55 words
The arrangement of claim 4, said circuit means including means for detecting the output signal of a transducer means corresponding to a component section wherein a dielectric breakdown has occurred and for blocking the outputs of the remaining ones of said detection devices whereby a definitive statement is obtained for identifying the faulted component section.
Claim 9
Dependent Claim
27 words
The arrangement of claim 1, said filter means including means for adjusting the basic frequency thereof, and said amplitude means including means for adjusting the attenuation thereof.
Claim 10
Dependent Claim
16 words
The arrangement of claim 1, said filter means including means for adjusting the basic frequency thereof.
Claim 11
Dependent Claim
15 words
The arrangement of claim 1, said amplitude means inclUding means for adjusting the attenuation thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |