AU697914B2 - Accidental arc detector for electric power distribution switching equipments - Google Patents
Accidental arc detector for electric power distribution switching equipments Download PDFInfo
- Publication number
- AU697914B2 AU697914B2 AU51413/96A AU5141396A AU697914B2 AU 697914 B2 AU697914 B2 AU 697914B2 AU 51413/96 A AU51413/96 A AU 51413/96A AU 5141396 A AU5141396 A AU 5141396A AU 697914 B2 AU697914 B2 AU 697914B2
- Authority
- AU
- Australia
- Prior art keywords
- support rod
- detector
- optical waveguide
- electric power
- power distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000005693 optoelectronics Effects 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 28
- 230000005855 radiation Effects 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
- H02H1/0015—Using arc detectors
- H02H1/0023—Using arc detectors sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Gas-Insulated Switchgears (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a detector for accidental arcs in electric power distribution switching equipments in which the detector consists of at least one light guide in which the light generated by the arc and reaching it via its casing is used as a triggering or warning factor. The detector is intended to permit the break-protected fitting of the light guide in a switching equipment. This is achieved in that the detector (1) consists of a support rod (2), a light guide (3) wound helically around the support rod (2) and two plug connectors (4) fitted at the ends of the support rod for connection to opto-electronic components, and the detector (1) also consists of a light and u/v radiation-permeable heat-shrink sleeve (5) fitted over the support rod (2), the light guide (3) and the plug connectors (4).
Description
-1- Accidental arc detector for electric power switching equipment.
This invention relates to a detector for accidental arcs in electric power distribution switching equipment.
DD 271 397 Al describes an optical waveguide accidental arc detector of the prior art which is located in the vicinity of power supply buses without any special mountings.
Figure 2 of this prior art publication shows the optical waveguide accidental arc detector in contact against both narrow sides of a bus bar which has a rectangular cross section.
This prior art publication, however does not indicate in any additional detail how the optical waveguide can be fastened to the bus bar. In Figure 3 of the above-referenced c ricr prior art publication, the optical waveguide is wound around the bus bar. In this arrangement, there is a danger that the optical waveguide can break, in particular at the points of contact with the corers of the bus bar, or in the areas near these comers. This 'I e ST arrangement also results in a severe restriction of the bonding surface of the bus bar.
There are also disadvantages to a direct surface mounting of the optical waveguide, 15 as described in further detail in DE 43 31 716. This prior art publication also illustrates and describes various arrangements of an optical waveguide accidental arc detector.
Figure 1 in DE 43 31 716 shows an arrangement in which the optical waveguide is I oriented essentially vertically and is wound around the three bus bars. Disadvantages of this arrangement are that the distance from the point of origin of an accidental arc can be different, and that the accidental arc does not always occur in the vicinity of the detector.
With the meandering orientation illustrated in Figure 3 in DD 271 397 Al, of course, the latter phenomenon cannot occur, but there is always a danger, as with all 20052-OO.DC/LEC L -2other orientations, that the relatively thin and barely visible optical waveguide may be damaged during installation or other activities.
The description in DD 271 397 Al also teaches that the optical fibers are located on bulkheads and other flat contact surfaces in the vicinity of the bus bar, in which case the optical waveguide can be fastened by means of adhesive or by fastening elements such as fastening lugs or spacers.
One problem with this arrangement is that bulkheads or similar elements are not always located close enough.
SSUMMARY OF THE INVENTION tCt 10 According to the invention there is provided a detector for accidental arcs in electric power distribution switching equipment including: a support rod; 'C 9 1; c: an optical waveguide wound helically around at least a portion of the support rod; t 15 two plug connectors each one located at a respective end of the support rod for Sconnection to optoelectronic components; and a heat-shrink sleeve which is permeable to light and to UV radiation at least partially enveloping the support rod, the optical waveguide, and the plug connectors.
A preferred embodiment of the invention p'ovid s a detector which makes it possible to lay the optical waveguide in electrical switching equipment so that the optical waveguide is protected against breaking.
Advantageously there is no significant adverse effect on the optical characteristics of the detector.
20052-O.DOC/LEC -3- The invention, additional embodiments and improvements to the invention and additional advantages are described and explained in greater detail below with reference to the embodiment illustrated in the accompanying drawings, in which: Figure 1 is an illustration of the detector; and Figure 2 is an illustration of the plug connector.
Figure 1 shows the detector 1. The detector 1 consists of a flexible support rod 2 which has a diameter of approximately 4 mm, an optical waveguide 3 which is wound in a spiral fashion around the support rod 2, and two plug connectors 4 which are located on the ends of the support rod for connection to optoelectronic elements. The detector 1 also consists of a heat-shrink sleeve 5 which is permeable to light and UV radiation, and V which is fitted over the support rod 2, the optical waveguide 3 and the plug connectors 4.
The heat-shrink sleeve 5, before installation, has a diameter which is larger than the diameter of the support rod 2. When heat is applied, the diameter of the heat-shrink sleeve decreases so that the optical waveguide 3 which is located between the support 15 rod 2 and the shrink-fitted hose 5 is clamped in position.
In this manner, the optical waveguide is protected against mechanical damage.
The surface of the optical waveguide is also protected from dirt. The dirt collects on the surface of the heat-shrink sleeve 5 instead.
The heat-shrink sleeve 5 can be perforated over its entire length.
The two plug connectors 4 each consist of a first part 6 and a second part 7 as illustrated in Figure 2.
The first part 6 has a cavity 8 into which the end of the support rod can be introduced. The diameter of the rotationally synmiietrical first part 6 is approximately 20052-oo.DOC&LEC -4- 2 mm larger than the diameter of the support rod. The inside diameter of the cavity 8 is 4.2 mm, so that the support rod 2 can be introduced with a clearance of 0.2 mm.
The second, also rotationally symmetrical part 7 located on the outer end is provided with a diameter which is significantly smaller than the first part 6. This diameter is a function of the size of the socket of an optical coupling device connection.
The cavity 9 of this part 7 tapers toward the end to a diameter of approximately 0.3 mm, ie approximately the diameter of the optical waveguide.
In the vicinity of the plug connector, the optical fiber is guided through a boring which runs diagonally from the outside surface to the center of the support rod, so that on the end, the optical waveguide runs parallel to and is centered in relation to the support rod 2.
Nomenclature i C t S: Detector 1 Support rod 2 15 Optical waveguide 3 Plug connector 4 Heat-shrink sleeve Part 6 (first part) Part 7 (second part) Cavity 8, 9 Boring 20052-OO.DOC/LEC
Claims (5)
1. A detector for accidental arcs in electric power distribution switching equipment including: a support rod; an optical waveguide wound helically around at least a portion of the support rod; two plug connectors each one located at a respective end of the support rod for connection to optoelectronic components; and a heat-shrink sleeve which is permeable to light and to UV radiation at least partially enveloping the support rod, the optical waveguide, and the plug connectors.
2. A detector in accordance with claim 1 wherein each plug connector includes a hollow first part and second part, wherein the first part has a first cavity into which an end of the support rod can be introduced, and the second part has a second cavity in communication with the first cavity through which the optical waveguide may pass but c c not the support rod. 15 3. A detector in accordance with Claim 2 wherein the second cavity includes a portion having a largest diameter smaller than the diameter of the support rod and a passageway for the waveguide to an outer end surface of the second part.
4. A detector in accordance with any preceding claim, wherein each end portion of the support rod has a passageway for the waveguide commencing on the outer surface and ending towards the centre region of the respective end surface of the support rod so that the optical waveguide is located in the vicinity of the axis of the support rod at the respective end surface. s- i i' 20052 o.Doc/LEC -6- A detector as claimed in any one of the preceding claims, wherein the support rod is flexible.
6. A detector for accidental arcs in electric power distribution switching equipment substantially as herein described with reference to Figures 1 and 2 of the accompanying drawings. DATEDthis 11th Day of May 1998 KLOCKNER-MOELLER GMBH *o 0 C. C r 0 0 4040 00000 Attorney: JOHN B. REDFERN Fellow Institute of Patent Attorneys of Australia of SHELSTON WATERS
20052-O.DOC/LEC
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29505362U DE29505362U1 (en) | 1995-03-30 | 1995-03-30 | Arc detector in switchgear for the distribution of electrical energy |
| DE29505362 | 1995-03-30 | ||
| PCT/DE1996/000543 WO1996030987A1 (en) | 1995-03-30 | 1996-03-28 | Accidental arc detector for electric power distribution switching equipments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU5141396A AU5141396A (en) | 1996-10-16 |
| AU697914B2 true AU697914B2 (en) | 1998-10-22 |
Family
ID=8006087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU51413/96A Ceased AU697914B2 (en) | 1995-03-30 | 1996-03-28 | Accidental arc detector for electric power distribution switching equipments |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0818075B1 (en) |
| JP (1) | JPH11503837A (en) |
| AT (1) | ATE180111T1 (en) |
| AU (1) | AU697914B2 (en) |
| CA (1) | CA2216369A1 (en) |
| DE (2) | DE29505362U1 (en) |
| HU (1) | HU220717B1 (en) |
| WO (1) | WO1996030987A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2754631B1 (en) * | 1996-10-14 | 1998-12-04 | Gec Alsthom T & D Sa | MONITORING DEVICE FOR A GAS INSULATED CABLE |
| DE19757844A1 (en) * | 1997-12-24 | 1999-07-01 | Moeller Gmbh | Switch arcing detector with non-wound light guide |
| DE10254497B3 (en) * | 2002-11-22 | 2004-06-03 | Moeller Gmbh | Short-circuit device for arcing protection of energy distribution network, uses energy provided by chemical reaction mixture for displacement of short-circuit contact |
| EP2327130A4 (en) | 2008-09-19 | 2015-05-06 | Schweitzer Engineering Lab Inc | Validation of arc flash detection systems |
| EP2329576B1 (en) | 2008-09-19 | 2016-03-30 | Schweitzer Engineering Laboratories, Inc. | Electro-optical radiation collector for arc flash detection |
| AU2009293077B2 (en) | 2008-09-19 | 2012-07-19 | Schweitzer Engineering Laboratories, Inc. | Arc flash protection with self-test |
| MX2011002462A (en) | 2008-09-19 | 2011-04-05 | Schweitzer Engineering Lab Inc | Secure arc flash detection. |
| BRPI0918931A2 (en) | 2008-09-19 | 2015-12-01 | Schweitzer Engineering Lab Inc | intelligent electronic device (ied), method for protecting a power system, and computer readable storage medium |
| DE102010011610A1 (en) * | 2010-03-16 | 2011-09-22 | Bkp Berolina Polyester Gmbh & Co. Kg | Optical sensor cable and use of the sensor cable during the installation of a Relining hose |
| US9438028B2 (en) | 2012-08-31 | 2016-09-06 | Schweitzer Engineering Laboratories, Inc. | Motor relay with integrated arc-flash detection |
| US10804689B2 (en) | 2016-11-18 | 2020-10-13 | Schweitzer Engineering Laboratories, Inc. | Methods and systems for evaluating arc flash exposure hazard |
| CN108923296A (en) * | 2018-08-28 | 2018-11-30 | 华宇通明电气（天津）有限公司 | A kind of insect-and mouse-preventing distribution box and application method |
| US11837862B2 (en) | 2020-10-09 | 2023-12-05 | Schweitzer Engineering Laboratories, Inc. | Arc-flash sensor using optical fiber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063506A1 (en) * | 1981-04-03 | 1982-10-27 | Lignes Telegraphiques Et Telephoniques L.T.T. | Protection device for open optical fibres at the end of a cable element, cable element with said device, and application of such a cable element |
| WO1988008217A1 (en) * | 1987-04-14 | 1988-10-20 | Strömberg Oy | An arc relay |
-
1995
- 1995-03-30 DE DE29505362U patent/DE29505362U1/en not_active Expired - Lifetime
-
1996
- 1996-03-28 HU HU9800637A patent/HU220717B1/en not_active IP Right Cessation
- 1996-03-28 CA CA002216369A patent/CA2216369A1/en not_active Abandoned
- 1996-03-28 EP EP96907993A patent/EP0818075B1/en not_active Expired - Lifetime
- 1996-03-28 AT AT96907993T patent/ATE180111T1/en not_active IP Right Cessation
- 1996-03-28 DE DE59601888T patent/DE59601888D1/en not_active Expired - Lifetime
- 1996-03-28 WO PCT/DE1996/000543 patent/WO1996030987A1/en active IP Right Grant
- 1996-03-28 AU AU51413/96A patent/AU697914B2/en not_active Ceased
- 1996-03-28 JP JP8528784A patent/JPH11503837A/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063506A1 (en) * | 1981-04-03 | 1982-10-27 | Lignes Telegraphiques Et Telephoniques L.T.T. | Protection device for open optical fibres at the end of a cable element, cable element with said device, and application of such a cable element |
| WO1988008217A1 (en) * | 1987-04-14 | 1988-10-20 | Strömberg Oy | An arc relay |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11503837A (en) | 1999-03-30 |
| ATE180111T1 (en) | 1999-05-15 |
| WO1996030987A1 (en) | 1996-10-03 |
| CA2216369A1 (en) | 1996-10-03 |
| HU220717B1 (en) | 2002-05-28 |
| EP0818075A1 (en) | 1998-01-14 |
| DE59601888D1 (en) | 1999-06-17 |
| AU5141396A (en) | 1996-10-16 |
| HUP9800637A2 (en) | 1998-07-28 |
| EP0818075B1 (en) | 1999-05-12 |
| HUP9800637A3 (en) | 2000-03-28 |
| DE29505362U1 (en) | 1996-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |