CN102097172A - 500KV extra-high voltage power cable with real-time temperature detection function - Google Patents
500KV extra-high voltage power cable with real-time temperature detection function Download PDFInfo
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- CN102097172A CN102097172A CN201110062836.0A CN201110062836A CN102097172A CN 102097172 A CN102097172 A CN 102097172A CN 201110062836 A CN201110062836 A CN 201110062836A CN 102097172 A CN102097172 A CN 102097172A
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Abstract
The invention discloses a 500KV extra-high voltage power cable with a real-time temperature detection function, which comprises a conductor positioned in the center of the cable. A semiconductive tape, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semiconductive water-blocking expansion buffer layer, a corrugated aluminum sheath and a nonmetallic sheath are sequentially arranged outside the conductor. A temperature detection optical fiber is arranged in the insulating shielding layer along the axial direction of the cable, and is connected with a switch cabinet temperature monitoring and early warning system. The 500KV extra-high voltage power cable with the real-time temperature detection function can monitor the temperature variations of long-distance cables in real time and accurately monitor the temperature conditions of high voltage switch contacts so as to realize point and line combination and comprehensive monitoring, and simultaneously can timely transmit fire alarming information to a fire alarming controller to realize gang control.
Description
Technical field
The present invention relates to a kind of power cable, particularly 500KV extra-high voltage electric power cable.
Background technology
Along with China's rapid economy development, news also constantly appears aspect safety in production, some incidents that takes place frequently still happens occasionally so far, and have become more and more outstanding, the fire incident, the power outage that cause because of ignition of cable occupy significant proportion therein.Be laid with a large amount of power cables and control cable in the power plant, and connect high-tension switch cabinet.These cable distribution are connecting each electric equipment respectively in cable tunnel, cable testing bridge, cable interlayer, and are connected to the control room, and are very harmful after the generation cable fire accident.Because cable is often concentrated and is laid, in case coverage on fire is wide, repair time long, the loss that causes is big.500KV extra-high voltage electric power cable particularly, in case breaking out of fire, its consequence is difficult to expect.
Summary of the invention
Technical problem to be solved by this invention provides a kind of 500KV extra-high voltage electric power cable with real time temperature measuring ability, and it can online detection streamer actual motion temperature, avoids the generation of potential safety hazards such as fire.
A kind of 500KV extra-high voltage electric power cable of the present invention with real time temperature measuring ability, comprise the conductor that is positioned at cable center, outside conductor, set gradually semiconductive band, conductor shield, insulating barrier, insulation screen, semiconductive block water expansion resilient coating, corrugated aluminum sheath, non metallic sheath, be axially arranged with thermometric optical fiber along cable in insulation screen, this thermometric optical fiber is connected with switch cubicle monitoring temperature early warning system.
The present invention can not only monitor the variations in temperature of long-distance cable in real time, also can accurately monitor the temperature conditions of high-voltage switch gear contact, reaches point, toe-in closes, comprehensive monitoring.Simultaneously fire alarm information in time can also be sent to fire alarm control unit, and realize interlock control.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1,500KV extra-high voltage electric power cable of the present invention, comprise the conductor 1 that is positioned at cable center, outside conductor 1, set gradually semiconductive band 2, conductor shield 3, insulating barrier 4, insulation screen 5, semiconductive block water expansion resilient coating 6, corrugated aluminum sheath 7, non metallic sheath 8, be axially arranged with thermometric optical fiber 9 along cable in insulation screen 5, this thermometric optical fiber 9 is connected with switch cubicle monitoring temperature early warning system.
The present invention has the following advantages:
But 1 real time on-line monitoring cable temperature is accomplished early warning, prevents not combustion.
2, distributed temperature measuring, the continuous acquisition signal can be set alarming threshold value arbitrarily according to field condition.Can show the temperature conditions that reaches in 15 kilometer range in real time, temperature resolution reaches as high as 0.3 ℃, and spatial positioning accuracy reaches as high as 0.5 meter.
3, system excellent performance: temperature measurement accuracy is generally 1 ℃ preferably can reach 0.1 ℃, and spatial resolution is generally 1 meter (preferably can reach 0.5 meter); Can realize simultaneously the nearly monitoring of 64 paths by disposing suitable optical switch.
4, software function is abundant: multiple temperature over-range can be set report to the police, as 40 ℃ of pre-alarms, take measures etc. for 50 ℃, and can revise according to the site environment situation; When setting overtemperature alarm, can also set the temperature rise rate abnormal alarm, or constant temperature and differential temperature be in conjunction with warning, and fire alarm information controlled with acousto-optic, relay and suitable treatment measures are exported and taked to mode such as fire-fighting interlock.
5, self calibration orthofunction: equipment possesses real-time self-checking function, in case fracture or mouse the fortuitous event system such as bites broken and can send information and indicate the staff to locate maintenance at once, the optical fiber of disconnection connects with optical fiber splicer and can continue to use.In addition, built-in adjustment of data unit can be proofreaied and correct in real time to gathering the temperature data of returning, and avoids causing deviation because of long-term light source ages or other situation used.
The invention provides the thinking and the implementation method of 500KV extra-high voltage electric power cable with real time temperature measuring ability; concrete application approach is a lot; the above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (1)
1. 500KV extra-high voltage electric power cable with real time temperature measuring ability, comprise the conductor (1) that is positioned at cable center, outside conductor (1), set gradually semiconductive band (2), conductor shield (3), insulating barrier (4), insulation screen (5), semiconductive block water expansion resilient coating (6), corrugated aluminum sheath (7), non metallic sheath (8), it is characterized in that being axially arranged with thermometric optical fiber (9) along cable in insulation screen (5), this thermometric optical fiber (9) is connected with switch cubicle monitoring temperature early warning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062836.0A CN102097172A (en) | 2011-03-16 | 2011-03-16 | 500KV extra-high voltage power cable with real-time temperature detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062836.0A CN102097172A (en) | 2011-03-16 | 2011-03-16 | 500KV extra-high voltage power cable with real-time temperature detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102097172A true CN102097172A (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110062836.0A Pending CN102097172A (en) | 2011-03-16 | 2011-03-16 | 500KV extra-high voltage power cable with real-time temperature detection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN102097172A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620851A (en) * | 2012-04-10 | 2012-08-01 | 苏州易邦顿信息科技有限公司 | Miniature device for measuring temperature of intermediate joint of power cables |
| CN103824638A (en) * | 2014-02-14 | 2014-05-28 | 申环电缆科技有限公司 | Intelligent power grid-used high-voltage photoelectric composite cable with externally-arranged optical fibers |
| CN105716740A (en) * | 2016-04-12 | 2016-06-29 | 深圳市深电电力设备发展有限公司 | Electric power sheath having temperature measurement function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2687830A1 (en) * | 1992-02-26 | 1993-08-27 | Cortaillod Cables Sa | Cable for transporting medium- and high-voltage energy with device for detecting that a temperature has been exceeded, and use of such a cable |
| CN2691021Y (en) * | 2004-03-29 | 2005-04-06 | 江苏亨通电力电缆有限公司 | Optical fiber temperature detection defect early warning composite power cable |
| CN201698819U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable with corrugated aluminum sheath |
-
2011
- 2011-03-16 CN CN201110062836.0A patent/CN102097172A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2687830A1 (en) * | 1992-02-26 | 1993-08-27 | Cortaillod Cables Sa | Cable for transporting medium- and high-voltage energy with device for detecting that a temperature has been exceeded, and use of such a cable |
| CN2691021Y (en) * | 2004-03-29 | 2005-04-06 | 江苏亨通电力电缆有限公司 | Optical fiber temperature detection defect early warning composite power cable |
| CN201698819U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable with corrugated aluminum sheath |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620851A (en) * | 2012-04-10 | 2012-08-01 | 苏州易邦顿信息科技有限公司 | Miniature device for measuring temperature of intermediate joint of power cables |
| CN102620851B (en) * | 2012-04-10 | 2013-06-26 | 苏州左海电气有限公司 | Miniature device for measuring temperature of intermediate joint of power cables |
| CN103824638A (en) * | 2014-02-14 | 2014-05-28 | 申环电缆科技有限公司 | Intelligent power grid-used high-voltage photoelectric composite cable with externally-arranged optical fibers |
| CN105716740A (en) * | 2016-04-12 | 2016-06-29 | 深圳市深电电力设备发展有限公司 | Electric power sheath having temperature measurement function |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110615 |