CN102620851B - Miniature device for measuring temperature of intermediate joint of power cables - Google Patents
Miniature device for measuring temperature of intermediate joint of power cables Download PDFInfo
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- CN102620851B CN102620851B CN2012101025863A CN201210102586A CN102620851B CN 102620851 B CN102620851 B CN 102620851B CN 2012101025863 A CN2012101025863 A CN 2012101025863A CN 201210102586 A CN201210102586 A CN 201210102586A CN 102620851 B CN102620851 B CN 102620851B
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- intermediate joint
- electric cable
- measuring equipment
- temperature measuring
- temperature
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- 238000004891 communication Methods 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 230000016507 interphase Effects 0.000 abstract 1
- 238000009422 external insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Y02B60/50—
Abstract
The invention discloses a miniature device for measuring the temperature of an intermediate joint of power cables, and the miniature device is used for on-line monitoring the temperature of the intermediate joint of cold shrinkage type and hot shrinkage type power cables. The intermediate joint of the power cables comprises a copper core and a connecting pipe for pressing the copper core, the miniature device is installed at the power cable intermediate joint and is tightly close to the shrinkable tubing on the inner side of copper shielding grid, the miniature device comprises a self-powering device, temperature sensors and a data acquisition and communication module, the temperature sensors are uniformly distributed on the shrinkable tubing on the inner side of the copper shielding grid on the periphery of the connecting pipe, the data acquisition and communication module is annularly installed at the lap joint site between the shrinkable tubing on the inner side of the copper shielding grid and a semiconductor layer of a power cable, and the data acquisition and communication module adopts the 2.4G wireless communications technology to communicate with outside. The miniature device disclosed by the invention can accurately reflect the actual temperature inside the power cable intermediate joint, and realizes single-phase temperature out-of-limit alarm and inter-phase temperature comparison out-of-limit alarm.
Description
Technical field
The invention belongs to power cable state on-line monitoring field, particularly the miniature temperature measuring equipment of a kind of intermediate joint of electric cable, be used for shrinkage power cable intermediate connector and thermal shrinkage type Power Cable Joint Temperature on-line monitoring.
Background technology
In order to improve power supply reliability, the more and more power cables that adopt of urban electricity supply circuit adopt cable intermediate joint to realize being connected of cable and cable.The cable intermediate joint number of stoppages accounts for the cable fault total degree more than 70%, and the intermediate head fault can make whole piece line outage two to five hours, has greatly affected the urban electricity supply reliability.The heat that produces because of reasons such as the high contact resistance of intermediate joint of electric cable, shelf depreciation accumulation constantly raises the temperature of cable intermediate joint, aging, the discharge current of accelerating cable insulation material progressively increase, and arrive to a certain degree to cause puncturing or fire.Hence one can see that, as long as measure in real time the temperature of cable intermediate joint inside, finds as early as possible the cable intermediate joint that temperature raises, and just can in time fix a breakdown, and guarantees the normal operation of power circuit, prevents the generation of power outage.
Because the temperature of cable splice is to change continuously and slowly, so when intermediate head is superheated to the accident generation, has considerable time to take measures to avoid the generation of this accident, thereby guarantee the safety of circuit.In order to reach this purpose, must set up a cover real time on-line monitoring system, in case unusual circumstance namely can be taken measures by wireless network and the timely alarm operator of transferring equipment, before fault occurs, the trouble spot is isolated, imminent fault is converted into urgent defect processing, avoids power outage and improve power supply reliability.
Summary of the invention
For above-mentioned actual demand, the object of the present invention is to provide the miniature temperature measuring equipment of a kind of intermediate joint of electric cable, can be in the situation that do not destroy the intermediate joint of electric cable dielectric level, the inner actual temperature of accurate response intermediate joint of electric cable, and can realize that single-phase temperature beyond limit is reported to the police and the relatively off-limit alarm of separate temperature.
in order to address the above problem, technical scheme of the present invention is, provide a kind of intermediate joint of electric cable miniature temperature measuring equipment, be used for cold-shrink type and thermal shrinkage type Power Cable Joint Temperature on-line monitoring, described intermediate joint of electric cable comprises the copper core and is used for the connecting pipe of crimping copper core, described miniature temperature measuring equipment is installed on the intermediate joint of electric cable place and is close on the shrinkable tubing of copper shield net inboard, described miniature temperature measuring equipment comprises the automatic electricity getting device, temperature sensor, data acquisition and communication module, described temperature sensor is uniformly distributed on the shrinkable tubing of the copper shield net inboard around the connecting pipe position, described data acquisition and communication module are installed on the shrinkable tubing of copper shield net inboard and the semiconductor layer lap-joint of power cable for annular, described data acquisition and communication module adopt 2.4G wireless communication technique and outside to carry out communication.
In a preferred embodiment of the present invention, described shrinkable tubing is a kind of in half conduit, shrinkage sleeve pipe or dark red insulation shielding pipe.
In a preferred embodiment of the present invention, described temperature sensor is provided with 6-16.
In a preferred embodiment of the present invention, described 2.4G wireless communication technique is selected a kind of in the 2.4G radio transmitting and receiving chip of the 2.4G radio transmitting and receiving chip of 2.4G radio transmitting and receiving chip, 2-FSK modulation technique of FSK/GFSK modulation technique or DSSS/FSK/MSK/ASK/OOK MSK modulation technique.
In a preferred embodiment of the present invention, described electricity getting device adopts CT automatic electricity getting device.
In a preferred embodiment of the present invention, described temperature sensor is a kind of in platinum resistance, thermistor or chip type temperature sensor.
In a preferred embodiment of the present invention, described data acquisition and communication module adopt AES communication encryption technology.
the miniature temperature measuring equipment of intermediate joint of electric cable of the present invention, be used for cold-shrink type and thermal shrinkage type Power Cable Joint Temperature on-line monitoring, being installed on the intermediate joint of electric cable place is close on the shrinkable tubing of copper shield net inboard, miniature temperature measuring equipment of every independent placement mutually, the copper shield net at this miniature temperature measuring equipment adopts the penetrable intermediate joint of electric cable of 2.4G wireless communication technique place and the data concentrator in a plurality of insulation course and cable shaft carry out communication, also can penetrate half meter dark ponding that may exist in cable shaft and realize communication, can be in the situation that do not destroy the intermediate joint of electric cable dielectric level, the inner actual temperature of accurate response intermediate joint of electric cable, and can realize that single-phase temperature beyond limit is reported to the police and the relatively off-limit alarm of separate temperature.
Description of drawings
Fig. 1 is inner structure schematic diagram and the miniature temperature measuring equipment arrangenent diagram of intermediate joint of electric cable one preferred embodiment in the present invention;
Being labeled as in annex: 1, automatic electricity getting device, 2, temperature sensor, 3, data acquisition and communication module, 4, copper shield, 5, semiconductor layer, 6, the major insulation pipe, 7, the copper core, 8, connecting pipe, 9, copper shield net, 10, half conduit, 11, the external insulation pipe, 12, interior insulation tube.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made more explicit defining.
In the embodiment of the present invention, take 10kv thermal shrinkage type intermediate joint of electric cable as example, all the other 6kv, 10kv, 20kv, 35kv use shrinkage power cable intermediate connector and thermal shrinkage type intermediate joint of electric cable all with reference to this implementation method.
The invention provides the miniature temperature measuring equipment of a kind of intermediate joint of electric cable, be used for cold-shrink type and thermal shrinkage type Power Cable Joint Temperature on-line monitoring, this intermediate joint of electric cable be mainly comprise copper core 7, be used for crimping copper core connecting pipe 8, be used for repairing copper shield net 9, half conduit 10, external insulation pipe 11 and the interior insulation tube 12 of cable insulation.See also Fig. 1; two sections of this left and right power cable is the arbitrary phase in the 10kv power cable; it comprises copper shield 4, semiconductor layer 5, major insulation pipe 6 and copper core 7; the copper core 7 use connecting pipes 8 of these two sections power cable inside middle are crimped on and form together the conductor that is communicated with, then make the single-phase protective seam of formation intermediate joint of electric cable and the through-flow layer of capacitance current with copper shield net 9, shrinkable tubing, external insulation pipe 11 and interior insulation tube 12.Shrinkable tubing is a kind of in half conduit, shrinkage sleeve pipe or dark red insulation shielding pipe, in the present invention take half conduit 10 as example.
Miniature temperature measuring equipment in the present invention is every in power cable independently places one mutually, being installed on the intermediate joint of electric cable place is close on half conduit 10 of copper shield net 9 inboards, 6-16 point for measuring temperature can be set, temperature to intermediate joint of electric cable is measured in real time, and data acquisition and communication module 3 adopt 2.4G wireless communication technique and outside to carry out communication.2.4G wireless communication technique in the present invention can be selected a kind of in the 2.4G radio transmitting and receiving chip of the 2.4G radio transmitting and receiving chip of 2.4G radio transmitting and receiving chip, 2-FSK modulation technique of FSK/GFSK modulation technique or DSSS/FSK/MSK/ASK/OOK MSK modulation technique.Can certainly select as required the 2.4G radio transmitting and receiving chip of other modulation technique.
Miniature temperature measuring equipment in the present invention comprises automatic electricity getting device 1, temperature sensor 2, data acquisition and communication module 3.Wherein, electricity getting device 1 adopts CT automatic electricity getting device; Temperature sensor 2 is uniformly distributed on half conduit 10 of copper shield net 9 inboards around connecting pipe 8 positions; Data acquisition and communication module 3 is installed on half conduit 10 of copper shield net 9 inboards and semiconductor layer 5 lap-joints of power cable for annular.Temperature sensor 2 emphasis in the present invention monitor connecting pipe 8, measure in real time the temperature of intermediate joint of electric cable with temperature sensor 2, by data acquisition and communication module 3, the temperature data that collects are sent to the external data concentrator.The penetrable cable intermediate joint of the 2.4G wireless communication technique place's copper shield net 9 that adopts and the data concentrator in a plurality of insulation tube and cable shaft carry out communication, also can penetrate half meter dark ponding that may exist in cable shaft and realize communication; The inner actual temperature of energy accurate response intermediate joint of electric cable when Temperature numerical surpasses the temperature of setting, can realize that single-phase temperature beyond limit is reported to the police and separate temperature compares off-limit alarm.
Temperature sensor 2 in the present invention is a kind of in platinum resistance, thermistor or chip type temperature sensor, can certainly be other temperature sensor.In the present invention, 6-16 temperature sensor 2 is uniformly distributed on half conduit 10 of copper shield net 9 inboards around connecting pipe 8 positions, emphasis monitors connecting pipe, makes the temperature that measures more accurate.
The maximum transmission power of the data acquisition in the present invention and communication module 3 is more than or equal to 20dBm, and communication can cover whole cable shaft scope; Adopt AES communication encryption technology, guaranteed the safety of communication.
the miniature temperature measuring equipment of intermediate joint of electric cable that the present invention discloses, be used for cold-shrink type and thermal shrinkage type Power Cable Joint Temperature on-line monitoring, being installed on the intermediate joint of electric cable place is close on half conduit 10 of copper shield net 9 inboards, miniature temperature measuring equipment of every independent placement mutually, the copper shield net 9 at this miniature temperature measuring equipment adopts the penetrable intermediate joint of electric cable of 2.4G wireless communication technique place and the data concentrator in a plurality of insulation course and cable shaft carry out communication, also can penetrate half meter dark ponding that may exist in cable shaft and realize communication, can be in the situation that do not destroy the intermediate joint of electric cable dielectric level, the inner actual temperature of accurate response intermediate joint of electric cable, and can realize that single-phase temperature beyond limit is reported to the police and the relatively off-limit alarm of separate temperature.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. miniature temperature measuring equipment of intermediate joint of electric cable, be used for cold-shrink type and thermal shrinkage type Power Cable Joint Temperature on-line monitoring, described intermediate joint of electric cable comprises the copper core and is used for the connecting pipe of crimping copper core, it is characterized in that, described miniature temperature measuring equipment is installed on the intermediate joint of electric cable place and is close on the shrinkable tubing of copper shield net inboard, described miniature temperature measuring equipment comprises the automatic electricity getting device, temperature sensor, data acquisition and communication module, described temperature sensor is uniformly distributed on the shrinkable tubing of the copper shield net inboard around the connecting pipe position, described data acquisition and communication module are installed on the shrinkable tubing of copper shield net inboard and the semiconductor layer lap-joint of power cable for annular, described data acquisition and communication module adopt 2.4G wireless communication technique and outside to carry out communication.
2. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, is characterized in that, described shrinkable tubing is a kind of in half conduit, shrinkage sleeve pipe or dark red insulation shielding pipe.
3. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, is characterized in that, described temperature sensor is provided with 6-16.
4. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, it is characterized in that, described 2.4G wireless communication technique is selected a kind of in the 2.4G radio transmitting and receiving chip of the 2.4G radio transmitting and receiving chip of 2.4G radio transmitting and receiving chip, 2-FSK modulation technique of FSK/GFSK modulation technique or DSSS/FSK/MSK/ASK/OOK MSK modulation technique.
5. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, is characterized in that, described automatic electricity getting device adopts CT automatic electricity getting device.
6. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, is characterized in that, described temperature sensor is a kind of in platinum resistance, thermistor or chip type temperature sensor.
7. the miniature temperature measuring equipment of intermediate joint of electric cable according to claim 1, is characterized in that, described data acquisition and communication module adopt AES communication encryption technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101025863A CN102620851B (en) | 2012-04-10 | 2012-04-10 | Miniature device for measuring temperature of intermediate joint of power cables |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101025863A CN102620851B (en) | 2012-04-10 | 2012-04-10 | Miniature device for measuring temperature of intermediate joint of power cables |
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| Publication Number | Publication Date |
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| CN102620851A CN102620851A (en) | 2012-08-01 |
| CN102620851B true CN102620851B (en) | 2013-06-26 |
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| CN2012101025863A Active CN102620851B (en) | 2012-04-10 | 2012-04-10 | Miniature device for measuring temperature of intermediate joint of power cables |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839970B (en) * | 2012-08-14 | 2016-03-23 | 苏州左海电气有限公司 | A kind of intermediate joint of electric cable online monitoring data concentrator |
| CN106855443B (en) * | 2015-12-09 | 2019-12-24 | 上海电缆研究所有限公司 | Cable intermediate head conductor temperature measurement structure |
| CN105547375A (en) * | 2016-03-03 | 2016-05-04 | 江苏中天科技电缆附件有限公司 | Novel on-line monitoring device for high-voltage cable connector |
| CN106908648A (en) * | 2017-01-13 | 2017-06-30 | 国网山东省电力公司巨野县供电公司 | A kind of cable head temperature monitors O＆M device |
| CN108344519B (en) * | 2018-01-29 | 2020-06-19 | 华南理工大学 | Thermocouple arrangement method for measuring axial temperature distribution of high-voltage cable intermediate joint |
| CN111141419A (en) * | 2019-12-30 | 2020-05-12 | 国家电网有限公司 | Cable temperature data processing method and device |
| CN112082664B (en) * | 2020-09-16 | 2021-07-20 | 长园电力技术有限公司 | Temperature sensor installation device |
| CN112462221B (en) * | 2020-11-05 | 2022-06-17 | 清华大学 | Simulation test device for high-temperature aging failure of crimping type semiconductor |
| CN112881785B (en) * | 2021-01-18 | 2022-08-30 | 国网天津市电力公司电力科学研究院 | Cable buffer layer repairing effect evaluation method based on capacitance current analysis |
| CN114236295B (en) * | 2021-12-22 | 2022-12-16 | 上海欧秒电力监测设备有限公司 | Power cable on-line measuring device based on fuel factor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201213075Y (en) * | 2008-06-27 | 2009-03-25 | 中国铝业股份有限公司 | Electric cable having real-time temperature measuring function |
| CN101464488A (en) * | 2009-01-16 | 2009-06-24 | 上海慧东电气设备有限公司 | On-line monitoring system for high voltage cable |
| CN102097172A (en) * | 2011-03-16 | 2011-06-15 | 无锡市长城电线电缆有限公司 | 500KV extra-high voltage power cable with real-time temperature detection function |
| CN202145394U (en) * | 2011-04-27 | 2012-02-15 | 上海市电力公司 | Multifunctional cable with functions of communication and temperature monitoring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1247965B (en) * | 1991-06-03 | 1995-01-05 | Testel Spa | VEHICLE EXHAUST GAS TEMPERATURE CONTROL DEVICE. |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201213075Y (en) * | 2008-06-27 | 2009-03-25 | 中国铝业股份有限公司 | Electric cable having real-time temperature measuring function |
| CN101464488A (en) * | 2009-01-16 | 2009-06-24 | 上海慧东电气设备有限公司 | On-line monitoring system for high voltage cable |
| CN102097172A (en) * | 2011-03-16 | 2011-06-15 | 无锡市长城电线电缆有限公司 | 500KV extra-high voltage power cable with real-time temperature detection function |
| CN202145394U (en) * | 2011-04-27 | 2012-02-15 | 上海市电力公司 | Multifunctional cable with functions of communication and temperature monitoring |
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| CN102620851A (en) | 2012-08-01 |
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Owner name: SUZHOU ZUOHAI ELECTRIC CO., LTD. Free format text: FORMER OWNER: SUZHOU YIBANGDUN INFORMATION TECHNOLOGY CO., LTD. Effective date: 20120905 |
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Effective date of registration: 20120905 Address after: High tech Zone Suzhou city Jiangsu province 215000 Chuk Yuen Road No. 209 Applicant after: Suzhou Zuohai Electric Co., Ltd. Address before: 215000 Jiangsu Province, Suzhou City Industrial Park Loufeng Zhen Xing Hong Road No. 199 Applicant before: Suzhou Yibangdun Information Technology Co., Ltd. |
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Inventor after: Tang De Inventor before: Zhu Guofang Inventor before: Dong Xiaofeng |
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Effective date of registration: 20170406 Address after: 519000 Guangdong city of Zhuhai province Hengqin Baohua Road No. 6, room 105 -7865 Patentee after: Zhuhai Zhongsheng Electric Power Technology Co., Ltd. Address before: High tech Zone Suzhou city Jiangsu province 215000 Chuk Yuen Road No. 209 Patentee before: Suzhou Zuohai Electric Co., Ltd. |
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