CN112649113B - Laying method for temperature sensing optical fiber in power bus temperature measurement system - Google Patents
Laying method for temperature sensing optical fiber in power bus temperature measurement system Download PDFInfo
- Publication number
- CN112649113B CN112649113B CN202010955675.7A CN202010955675A CN112649113B CN 112649113 B CN112649113 B CN 112649113B CN 202010955675 A CN202010955675 A CN 202010955675A CN 112649113 B CN112649113 B CN 112649113B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- temperature
- protective sleeve
- bus
- shaped channel
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a laying method of temperature sensing optical fibers in a power bus temperature measurement system, which belongs to the technical field of optical fiber laying and comprises the following steps: s1: in the early stage of production of the power bus, a U-shaped channel with the diameter is processed on the narrow side surface of a bus conductor; s2: the method has the advantages that eddy current and circulation effects of the large-current bus on the magnetic metal material are avoided, the optical fiber protective sleeve is demagnetized, or the optical fiber protective sleeve is made of a metal or non-metal material with weak magnetic conductivity; s3: and inserting the optical fiber protective sleeve into the U-shaped channel of the bus conductor by laying and embedding the tool. The frock is inlayed to temperature sensing optic fibre is laid inside the conductor body of power bus, and the speed of laying is improved to the utilization is inlayed laying of frock comparatively convenient simple to the fastness of connecting promotes to some extent, makes temperature sensing optic fibre fixed when the temperature measurement holistic position, can not break away from, and the real-time temperature of bus conductor is directly gathered completely on temperature acquisition to the mode of laying of temperature sensing optic fibre in the power bus temperature measurement system of research and development, and the collection temperature is more accurate.
Description
Technical Field
The invention relates to the technical field of optical fiber laying, in particular to a laying method of a temperature sensing optical fiber used in a power bus temperature measurement system.
Background
Because a high-voltage bus and electrical equipment are generally in an environment with high voltage, large current and strong magnetic field, in actual monitoring, voltage isolation must be required between a monitoring object and a monitoring instrument, and effective transmission of a test signal is also a problem which is difficult to solve all the time, therefore, some conventional temperature measurement methods are difficult to be applied to the high-voltage electrical equipment, and at present, bus temperature monitoring mainly comprises the following schemes:
(1) Color chip temperature measurement:
the temperature can be judged according to the color of the glass by utilizing the change of the color of the glass along with the temperature;
the defects are that the accuracy is low, the reliability is poor, quantitative measurement cannot be carried out, the high-voltage bus contact is difficult to monitor, and short-distance observation cannot be carried out during operation.
(2) Adopting a thermal infrared detection technology:
the method has the advantages of large measurement range and higher accuracy;
the defects are that the equipment is expensive, the high-voltage bus enclosed in the cabinet cannot be detected, and the integrated integration of the high-voltage equipment and the temperature on-line monitoring cannot be realized.
(3) The existing power bus optical fiber temperature measurement system:
the method has the advantages of large measurement range and high information transmission integration level;
the temperature sensing optical fiber of the conventional power bus optical fiber temperature measuring system is directly integrated with a bus insulating layer or the temperature sensing optical fiber is bound and arranged on the surface of the bus insulating layer, so that the temperature sensing optical fiber and a bus conductor have thicker insulating layer isolation thickness, the temperature acquired by the temperature sensing optical fiber is greatly different from the real bus conductor temperature, and the temperature is not real and accurate enough.
The temperature-sensing optical fiber has a large distance with the bus conductor, so that the temperature acquired by the temperature-sensing optical fiber has serious hysteresis with the bus conductor temperature, the actual temperature of the bus conductor cannot be acquired in real time, and in the long-term operation process of the power bus, the temperature acquisition precision of the temperature-sensing optical fiber is influenced and the service life of the temperature-sensing optical fiber is reduced due to the fact that the optical fiber is easily damaged by mechanical external force caused by expansion and contraction of heat of a bus body or the bundling installation mode of the temperature-sensing optical fiber.
Disclosure of Invention
The invention aims to provide a method for laying a temperature-sensing optical fiber in a power bus temperature measurement system, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a laying method for a temperature sensing optical fiber in a power bus temperature measurement system comprises the following steps:
s1: processing a U-shaped channel on the narrow side surface of a bus conductor in the early stage of production of the power bus;
s2: the method has the advantages that eddy current and circulation effects of the large-current bus on magnetic metal materials are avoided, the optical fiber protective sleeve is subjected to demagnetization treatment, or the protective sleeve is made of weak magnetic conductive metal or non-metal materials;
s3: inserting the optical fiber protective sleeve into the U-shaped channel of the bus conductor through a laying and embedding tool;
s4: temperature sensing optical fibers are arranged in the optical fiber protective sleeve in a penetrating mode, two ends of each temperature sensing optical fiber are connected with detachable optical fiber connectors, and a plurality of groups of temperature measuring points are established by connecting a plurality of groups of optical fiber connectors in parallel or in series;
s5: pouring or assembling an insulating layer of the power bus to fix the position of the insulating layer;
s6: after the on-site whole-line installation of the power bus is finished, two ends of the temperature sensing optical fiber are in contact with the optical fiber temperature measuring system, and the temperature of the buses is measured simultaneously through the optical fiber temperature measuring host.
Further, in S1, the U-shaped channel is of a structure that the diameter of an arc opening at the bottom end is larger than that of an arc opening at the upper end, the diameter of the arc opening of the U-shaped channel is slightly larger than that of the optical fiber protective sleeve, the opening at the upper end is smaller than that of the optical fiber protective sleeve, the optical fiber protective sleeve is inserted into the U-shaped channel and is prevented from being separated from the U-shaped channel, and the diameter of the temperature sensing optical fiber is smaller than that of the upper end opening of the U-shaped channel and is placed into the U-shaped channel.
Further, in S3, the embedding tool comprises a support frame, a telescopic rack capable of sliding up and down, a rotating shaft and a pressing wheel, wherein the bottom of the support frame is fixed on two sides of the bus conductor, the telescopic rack is installed on the support frames on the two sides, the rotating shaft is inserted into bearings of the two telescopic racks, and the pressing wheel fixed with the rotating shaft is sleeved on the outer portion of the rotating shaft;
the utility model discloses a cable protection device, including optic fibre protective sheath, U type passageway, the U type passageway is placed to the optic fibre protective sheath, and the pinch roller is located the port top of optic fibre protective sheath, descends through the flexible frame of control both sides, until the arc opening of the U type passageway of impressing the one end of optic fibre protective sheath in, the other end can upwarp, through the synchronous motion of optic fibre protective sheath and bus conductor, the relative optic fibre protective sheath of its pinch roller removes, impresses follow-up one end of perk to the arc opening of U type passageway in, accomplishes laying of optic fibre protective sheath.
Further, in S4, one end of the temperature sensing optical fiber moves to one end of the optical fiber protection sleeve embedded in the U-shaped channel, enters the arc-shaped opening through the upper end opening of the U-shaped channel, and the port of the temperature sensing optical fiber penetrates through the optical fiber protection sleeve by moving.
Further, in S6, the temperature sensing optical fiber is directly laid inside the conductor body of the power bus through the processed U-shaped groove, the temperature of the bus conductor is directly the object of the temperature sensing optical fiber measurement, not the temperature of the bus insulation layer, and the optical fiber temperature measurement host performs temperature measurement on a plurality of power buses or a plurality of points of the power buses through series connection or parallel connection between the temperature sensing optical fibers.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a laying method of temperature sensing optical fibers in a power bus temperature measurement system, which is characterized in that the temperature of a plurality of buses is measured simultaneously through a plurality of optical fiber temperature measurement hosts, the temperature sensing optical fibers are directly laid in a conductor body of the power buses through processed U-shaped grooves, the temperature of a bus conductor is directly measured by the temperature sensing optical fibers instead of the temperature of a bus insulation layer, the optical fiber temperature measurement hosts measure the temperature of a plurality of power buses or a plurality of points of the power buses through series connection or parallel connection among the temperature sensing optical fibers, the temperature sensing optical fibers are laid in the conductor body of the power buses through an embedding tool, the laying by the embedding tool is convenient and simple, the laying speed is increased, the connection firmness is improved, the temperature sensing optical fibers are fixed in the integral position during temperature measurement and cannot be separated from the temperature sensing optical fibers, the real-time temperature of the bus conductor is completely and directly collected in the temperature collection mode of the temperature sensing optical fibers in the developed power bus temperature measurement system, the temperature collection method is more accurate, and the hysteresis problem of temperature sensing optical fiber temperature collection and the defect that the temperature sensing optical fibers are damaged by external force in the running process are overcome.
Drawings
FIG. 1 is a diagram of the laying state of the inlaying tool of the present invention;
FIG. 2 is a diagram showing a state before laying the temperature sensitive optical fiber according to the present invention;
FIG. 3 is a state diagram of the temperature sensitive optical fiber according to the present invention during its laying.
In the figure: 1. a support frame; 2. a telescopic frame; 3. a rotating shaft; 4. and pressing the wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-3, a method for laying a temperature-sensing optical fiber in a power bus temperature measurement system includes the following steps:
the method comprises the following steps: in the early stage of power bus production, a U-shaped channel is processed on the narrow side surface of a bus conductor, the U-shaped channel is of a structure that the diameter of an arc opening at the bottom end is larger than that of an opening at the upper end, the diameter of the arc opening of the U-shaped channel is slightly larger than that of an optical fiber protective sleeve, the opening at the upper end is smaller than that of the optical fiber protective sleeve, the optical fiber protective sleeve is inserted into the U-shaped channel to avoid separation, and the diameter of a temperature sensing optical fiber is smaller than that of the opening at the upper end of the U-shaped channel and is placed into the U-shaped channel;
the optical fiber protective sleeve is placed on the U-shaped channel, the pressing wheel 4 is positioned above the port of the optical fiber protective sleeve, the telescopic machine frames 2 on the two sides are controlled to descend until one end of the optical fiber protective sleeve is pressed into the arc-shaped opening of the U-shaped channel, the other end of the optical fiber protective sleeve can be upwarped, the pressing wheel 4 moves relative to the optical fiber protective sleeve through synchronous movement of the optical fiber protective sleeve and the bus conductor, and the subsequently upwarped end of the optical fiber protective sleeve is pressed into the arc-shaped opening of the U-shaped channel, so that the optical fiber protective sleeve is laid;
step two: the method has the advantages that eddy current and circulation effects of the large-current bus on the magnetic metal material are avoided, the optical fiber protective sleeve is demagnetized, or the optical fiber protective sleeve is made of weak magnetic metal or nonmetal materials;
step three: the optical fiber protective sleeve is inserted into a U-shaped channel of a bus conductor by laying an embedding tool, the embedding tool comprises a support frame 1, telescopic frames 2 capable of sliding up and down, a rotating shaft 3 and a pressing wheel 4, the bottom of the support frame 1 is fixed on two sides of the bus conductor, the telescopic frames 2 are installed on the support frames 1 on the two sides, the rotating shaft 3 is inserted into bearings of the two telescopic frames 2, and the pressing wheel 4 fixed with the rotating shaft 3 is sleeved on the outer portion of the rotating shaft 3;
step four: the temperature sensing optical fiber is arranged in the optical fiber protective sleeve in a penetrating mode, two ends of the temperature sensing optical fiber are connected with the detachable optical fiber connectors, a plurality of groups of temperature measuring points are established by connecting the optical fiber connectors in parallel or in series, one end of the temperature sensing optical fiber moves to one end of the optical fiber protective sleeve embedded in the U-shaped channel, enters the arc-shaped opening through the upper end opening of the U-shaped channel, and the port of the temperature sensing optical fiber penetrates through the optical fiber protective sleeve through movement;
step five: pouring or assembling an insulating layer of the power bus to fix the position of the insulating layer;
step six: after the whole on-site installation of the power bus is finished, two ends of the temperature sensing optical fibers are in contact with the optical fiber temperature measuring system, the temperature of a plurality of buses is measured simultaneously through a plurality of optical fiber temperature measuring hosts, the temperature sensing optical fibers are directly laid inside a conductor body of the power bus through a processed U-shaped groove, the temperature of a bus conductor is directly the temperature of the temperature sensing optical fibers, but not the temperature of a bus insulation layer, and the optical fiber temperature measuring hosts measure the temperature of the plurality of power buses or a plurality of points of the power buses through the series connection or the parallel connection of the temperature sensing optical fibers.
Firstly, temperature sensing optic fibre is laid inside the conductor body of power bus through inlaying the frock, it is comparatively convenient simple to utilize the laying of inlaying the frock, improve the speed of laying, and the fastness of connection promotes to some extent, make temperature sensing optic fibre fixed when the temperature measurement holistic position, can not break away from therefrom, lead to the inaccuracy of measurement temperature, the object of temperature sensing optic fibre measurement directly is the temperature of bus conductor, but not bus insulation layer temperature, consequently, the temperature data of this kind of mode measurement more direct reaction has seen out the temperature of power bus at the source conductor that generates heat of operation in-process, the data of gathering are truer, more accurate, more effective, secondly, because of temperature sensing optic fibre directly lays inside the conductor body of power bus, there is not insulating layer heat conduction time's restriction, consequently, it is timely to gather the temperature real-time, there is not temperature hysteresis nature problem.
Finally, because the temperature sensing optical fiber is protected by the optical fiber protective sleeve, the optical fiber of the bus has no stress problem in the assembling and long-term operation process, the problems of inaccurate acquisition data, easy damage of the optical fiber, short service life and the like caused by the stress of the optical fiber in the conventional optical fiber temperature measurement system are avoided, the real-time temperature of the bus conductor is completely and directly acquired by the laying mode of the temperature sensing optical fiber in the researched and developed electric bus temperature measurement system through long-term electric bus system operation measurement, the acquisition temperature is more accurate, and the hysteresis problem of temperature acquisition of the temperature sensing optical fiber and the defect of mechanical external force damage in the operation process of the temperature sensing optical fiber are avoided.
In summary, the following steps: the laying method for the temperature sensing optical fibers in the power bus temperature measurement system comprises the steps that the temperature of a plurality of buses is measured simultaneously through an optical fiber temperature measurement host, the temperature sensing optical fibers are directly laid inside a conductor body of the power buses through a processed U-shaped groove, the temperature of a bus conductor is directly measured as the object of temperature sensing optical fiber measurement, but not the temperature of a bus insulation layer, the optical fiber temperature measurement host carries out temperature measurement on a plurality of power buses or a plurality of power buses through series connection or parallel connection among the temperature sensing optical fibers, the temperature sensing optical fibers are laid inside the conductor body of the power buses through an embedding tool, the laying of the embedding tool is convenient and simple, the laying speed is increased, the connection firmness is improved, the whole position of the temperature sensing optical fibers is fixed during temperature measurement, the temperature sensing optical fibers cannot be separated from the temperature sensing optical fibers, the laying mode of the temperature sensing optical fibers in the developed power bus temperature measurement system completely and directly collects the real-time temperature of the bus conductor on temperature collection, the temperature collection is more accurate, and the hysteresis problem of temperature sensing optical fiber temperature collection and the defect that the optical fiber is damaged by mechanical external force in the running process are overcome.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (3)
1. A laying method for a temperature sensing optical fiber in a power bus temperature measurement system is characterized by comprising the following steps:
s1: processing a U-shaped channel on the narrow side surface of a bus conductor in the early stage of production of the power bus; the U-shaped channel is a structure with the diameter of an arc opening at the bottom end larger than that of an arc opening at the upper end, the diameter of the arc opening of the U-shaped channel is slightly larger than that of the optical fiber protective sleeve, the opening at the upper end is smaller than that of the optical fiber protective sleeve, the optical fiber protective sleeve is inserted into the U-shaped channel to avoid separation, and the diameter of the temperature sensing optical fiber is smaller than that of the upper end opening of the U-shaped channel and is placed into the U-shaped channel;
s2: the method has the advantages that eddy current and circulation effects of the large-current bus on magnetic metal materials are avoided, the optical fiber protective sleeve is subjected to demagnetization treatment, or the optical fiber protective sleeve is made of weak magnetic conductive metal or non-metal materials;
s3: inserting the optical fiber protective sleeve into the U-shaped channel of the bus conductor through a laying and embedding tool; the embedding tool comprises a support frame (1), a telescopic rack (2) capable of sliding up and down, a rotating shaft (3) and a pressing wheel (4), wherein the bottom of the support frame (1) is fixed on two sides of a bus conductor, the telescopic rack (2) is installed on the support frame (1) on the two sides, the rotating shaft (3) is inserted into bearings of the two telescopic racks (2), and the pressing wheel (4) fixed with the rotating shaft (3) is sleeved on the outer part of the rotating shaft (3);
the optical fiber protective sleeve is placed on the U-shaped channel, the pressing wheel (4) is positioned above the port of the optical fiber protective sleeve, the telescopic machine frames (2) on the two sides are controlled to descend until one end of the optical fiber protective sleeve is pressed into the arc-shaped opening of the U-shaped channel, the other end of the optical fiber protective sleeve can be upwarped, the pressing wheel (4) moves relative to the optical fiber protective sleeve through synchronous movement of the optical fiber protective sleeve and the bus conductor, and the subsequently upwarped end of the optical fiber protective sleeve is pressed into the arc-shaped opening of the U-shaped channel to complete laying of the optical fiber protective sleeve;
s4: the temperature sensing optical fiber is arranged in the optical fiber protective sleeve in a penetrating mode, two ends of the temperature sensing optical fiber are connected with the detachable optical fiber connectors, and a plurality of groups of temperature measuring points are established through the parallel connection or the serial connection of the optical fiber connectors;
s5: pouring or assembling an insulating layer of the power bus to fix the position of the insulating layer;
s6: after the whole power bus is installed on site, two ends of the temperature sensing optical fiber are in contact with the optical fiber temperature measuring system, and the temperature of the buses is measured simultaneously through the optical fiber temperature measuring host.
2. The method according to claim 1, wherein in step S4, one end of the temperature-sensing optical fiber is moved to one end of the optical fiber protection sleeve embedded in the U-shaped channel, enters the arc-shaped opening through the upper opening of the U-shaped channel, and the port of the temperature-sensing optical fiber penetrates through the optical fiber protection sleeve by moving.
3. The method as claimed in claim 1, wherein in step S6, the temperature-sensing optical fiber is directly laid inside the conductor body of the power bus through a U-shaped channel, the temperature-sensing optical fiber is directly measured by the temperature of the bus conductor, not the bus insulation layer, and the optical fiber temperature measurement host measures the temperature of the plurality of power buses or a plurality of points of the power buses through the serial connection or the parallel connection of the temperature-sensing optical fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955675.7A CN112649113B (en) | 2020-09-11 | 2020-09-11 | Laying method for temperature sensing optical fiber in power bus temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955675.7A CN112649113B (en) | 2020-09-11 | 2020-09-11 | Laying method for temperature sensing optical fiber in power bus temperature measurement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112649113A CN112649113A (en) | 2021-04-13 |
| CN112649113B true CN112649113B (en) | 2022-11-01 |
Family
ID=75346192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010955675.7A Active CN112649113B (en) | 2020-09-11 | 2020-09-11 | Laying method for temperature sensing optical fiber in power bus temperature measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112649113B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577362B (en) * | 2021-09-27 | 2023-09-19 | 常州亚盾测控技术有限公司 | Intelligent bus optical fiber laying method and online monitoring system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030045864A (en) * | 2001-12-01 | 2003-06-12 | 엘지전선 주식회사 | Temperature dector for underground power cables |
| CN201188138Y (en) * | 2008-03-18 | 2009-01-28 | 普拉德研究及开发股份有限公司 | Cable |
| CN201340312Y (en) * | 2009-01-20 | 2009-11-04 | 江苏大全封闭母线有限公司 | On-line temperature monitoring device of tubular bus |
| CN101719650A (en) * | 2009-12-29 | 2010-06-02 | 沈阳古河电缆有限公司 | Application of composite power cable outdoor terminal with optical fiber arranged in center of conductor |
| CN201765876U (en) * | 2010-03-26 | 2011-03-16 | 特变电工山东鲁能泰山电缆有限公司 | Novel built-in fiber temperature measuring high-voltage crosslinked cable |
| CN202601294U (en) * | 2012-04-21 | 2012-12-12 | 河南科信电缆有限公司 | Built-in optical fiber thermometric carbon fiber photoelectric composite cable |
| CN104409154A (en) * | 2014-11-24 | 2015-03-11 | 无锡江南电缆有限公司 | Round split conductor with internal optical fibers |
| CN204651069U (en) * | 2015-05-25 | 2015-09-16 | 广州供电局有限公司 | Multifunctional intellectual cable |
| CN109659088A (en) * | 2019-01-23 | 2019-04-19 | 深圳供电局有限公司 | Novel high-temperature superconducting cable with built-in optical fiber and manufacturing method thereof |
| CN110517807A (en) * | 2019-09-03 | 2019-11-29 | 广州岭南电缆股份有限公司 | A kind of special-shaped monofilament intelligence conductor structure |
-
2020
- 2020-09-11 CN CN202010955675.7A patent/CN112649113B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030045864A (en) * | 2001-12-01 | 2003-06-12 | 엘지전선 주식회사 | Temperature dector for underground power cables |
| CN201188138Y (en) * | 2008-03-18 | 2009-01-28 | 普拉德研究及开发股份有限公司 | Cable |
| CN201340312Y (en) * | 2009-01-20 | 2009-11-04 | 江苏大全封闭母线有限公司 | On-line temperature monitoring device of tubular bus |
| CN101719650A (en) * | 2009-12-29 | 2010-06-02 | 沈阳古河电缆有限公司 | Application of composite power cable outdoor terminal with optical fiber arranged in center of conductor |
| CN201765876U (en) * | 2010-03-26 | 2011-03-16 | 特变电工山东鲁能泰山电缆有限公司 | Novel built-in fiber temperature measuring high-voltage crosslinked cable |
| CN202601294U (en) * | 2012-04-21 | 2012-12-12 | 河南科信电缆有限公司 | Built-in optical fiber thermometric carbon fiber photoelectric composite cable |
| CN104409154A (en) * | 2014-11-24 | 2015-03-11 | 无锡江南电缆有限公司 | Round split conductor with internal optical fibers |
| CN204651069U (en) * | 2015-05-25 | 2015-09-16 | 广州供电局有限公司 | Multifunctional intellectual cable |
| CN109659088A (en) * | 2019-01-23 | 2019-04-19 | 深圳供电局有限公司 | Novel high-temperature superconducting cable with built-in optical fiber and manufacturing method thereof |
| CN110517807A (en) * | 2019-09-03 | 2019-11-29 | 广州岭南电缆股份有限公司 | A kind of special-shaped monofilament intelligence conductor structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112649113A (en) | 2021-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106855443A (en) | Cable intermediate joint conductor temperature measurement structure | |
| CN205175574U (en) | Cable intermediate head conductor temperature measures structure | |
| CN206975183U (en) | A kind of motor insulation condition diagnosis device | |
| CN112649113B (en) | Laying method for temperature sensing optical fiber in power bus temperature measurement system | |
| CN104075825A (en) | Power cable optical fiber temperature measurement benchmark data measuring method | |
| CN109269667A (en) | A kind of Novel IGBT device and preparation method thereof with real-time temperature test sytem | |
| CN103528701A (en) | Online monitoring system for temperature and current carrying capacity of power cable | |
| CN209764294U (en) | Long-distance cable continuous temperature monitoring system with automatic division of monitoring area | |
| CN104833888A (en) | Heating cable hot and cold cycle life test equipment and test method | |
| CN206056817U (en) | A kind of connect-disconnect plug with temperature-monitoring function | |
| CN117387534B (en) | Outer diameter size detection device for sensor cables at different temperatures | |
| CN202562652U (en) | Online temperature measurement and alarm device of transformer substation high-tension switch cabinet | |
| CN112649121A (en) | Working temperature detection method for 5G radio frequency equipment | |
| CN102539113B (en) | A kind of tracing analysis method based on Brillouin optical time domain analysis instrument BOTDA | |
| CN202255652U (en) | Wireless temperature measuring device of high-voltage switch contact | |
| CN113970381A (en) | Temperature and stress monitoring device and method suitable for high-temperature superconducting cable | |
| CN112964385B (en) | Internal heating temperature measurement optical cable, optical cable assembly and soil body measurement method | |
| CN213069009U (en) | Conductor direct current resistance detection device based on infrared temperature measurement | |
| CN203629690U (en) | ZigBee-based high-tension switch cabinet wireless temperature measurement system | |
| CN203337737U (en) | Finished cable resistance measuring device | |
| CN110095498B (en) | Method for detecting heat dissipation performance of cable duct | |
| CN203479416U (en) | Power cable temperature and current-carrying capacity online monitoring system | |
| CN208238994U (en) | Interface pressure detection device of cable accessory | |
| CN208488187U (en) | Fiber grating temperature sensor monitoring device for rail vehicle electric connecting point | |
| CN110542491A (en) | Temperature transmission efficiency test system and method for optical fiber composite lead of transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |