CN110631723A - Cable joint and temperature rise remote monitoring equipment system of temperature gradient method - Google Patents
Cable joint and temperature rise remote monitoring equipment system of temperature gradient method Download PDFInfo
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- CN110631723A CN110631723A CN201910988603.XA CN201910988603A CN110631723A CN 110631723 A CN110631723 A CN 110631723A CN 201910988603 A CN201910988603 A CN 201910988603A CN 110631723 A CN110631723 A CN 110631723A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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Abstract
The invention relates to a cable joint and temperature rise remote monitoring equipment system adopting a temperature gradient method, which comprises a cable joint temperature rise field monitoring unit, a remote communication platform and a monitoring center, wherein the cable joint temperature rise field monitoring unit is connected with the remote communication platform, the temperature information of the cable joint acquired on site is transmitted to a monitoring center for analysis through a remote communication platform, the temperature rise site monitoring unit of the cable joint comprises a cable head and a detection unit, the detection unit comprises an A-phase temperature measurement unit, a B-phase temperature measurement unit, a C-phase temperature measurement unit, an ambient temperature sensor, a data acquisition unit, an external power circuit and an interface circuit, the data acquisition unit comprises a microprocessor, a key circuit, a display circuit and a power conversion circuit, and the A-phase temperature measurement unit, the B-phase temperature measurement unit, the C-phase temperature measurement unit and the ambient temperature sensor are respectively connected with an A/D end of the microprocessor; the invention has the advantages of good monitoring effect, stable operation and accurate judgment.
Description
Technical Field
The invention relates to safety monitoring equipment and a system of power equipment, in particular to a cable joint and a temperature rise remote monitoring equipment system adopting a temperature gradient method.
Background
Because of the influences of production quality, installation quality, running time, use frequency, working environment and the like, the electric power equipment causes unreliable contact at an installation part and temperature rise exceeding the allowable range specified by the state, so that the insulation of a cable terminal is aged, and even serious consequences such as breakdown damage and the like occur.
The temperature of the power cable intermediate joint is an important parameter reflecting its operating state. The direct reason for causing the temperature rise of the cable joint is that the joint has long operation time, the crimping joint is not tight, the contact resistance is overlarge and the like, and the phenomena of overheating, insulation burning and the like caused by the long-term operation of the joint easily cause fire disasters, so that major safety accidents and economic losses are caused; therefore, it is very necessary to provide a cable joint and a temperature rise remote monitoring equipment system of a temperature gradient method which has good monitoring effect, stable operation and accurate judgment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cable joint and a temperature rise remote monitoring equipment system of a temperature gradient method, which have the advantages of good monitoring effect, stable operation and accurate judgment.
The purpose of the invention is realized as follows: a cable joint and temperature rise remote monitoring equipment system of a temperature gradient method comprises a cable joint temperature rise field monitoring unit, a remote communication platform and a monitoring center, wherein the cable joint temperature rise field detection unit is connected with the remote communication platform, the cable joint temperature information collected on the field is transmitted to the monitoring center for analysis through the remote communication platform, the cable joint temperature rise field monitoring unit comprises a cable head and a detection unit, the detection unit comprises an A-phase temperature measurement unit, a B-phase temperature measurement unit, a C-phase temperature measurement unit, an environmental temperature sensor, a data acquisition unit, an external power circuit and an interface circuit, the data acquisition unit comprises a microprocessor, a key circuit, a display circuit and a power conversion circuit, the A-phase temperature measurement unit, the B-phase temperature measurement unit, the C-phase temperature measurement unit and the environmental temperature sensor are respectively connected with an A/D end of the microprocessor, the monitoring center comprises a data communication module, a data management module and a user management module.
The temperature measuring device comprises an A-phase temperature measuring unit, a B-phase temperature measuring unit and a C-phase temperature measuring unit which are respectively fixed on cable heads of corresponding phases, wherein the A-phase temperature measuring unit, the B-phase temperature measuring unit and the C-phase temperature measuring unit respectively comprise a temperature sensor, a heat insulating material and a fixing binding belt, the temperature sensor is arranged on an outer surface layer of a heating part on one side of the cable head, a special sensor mounting belt with heat insulation is bound, the temperature sensor is tightly attached to a surface layer of a cable head accessory, the heat insulating material is filled in a temperature sensor housing, the local temperature conducted to the surface layer of the cable head accessory by a heating point can be kept, meanwhile, an environment temperature sensor is arranged on one side of the cable head, compensation data determined by experiments in advance are obtained by measuring the difference value of the heat insulation point of the cable accessory and the environment.
The remote communication platform mainly adopts an electric power private network optical fiber mode, supplements a wireless broadband private network and a medium-voltage electric power line carrier communication technology, and supplements a GPRS/CDMA/3G public network communication mode of a communication operator in an area which cannot be covered by a part of electric power private network.
The monitoring center is used for diagnosing the condition that the temperature of different cable joints is obtained by using the temperature of different cable joints established by an expert system.
The external power supply circuit can supply power for a solar battery, can also supply power for a battery, can also get electricity and supply power for CT coupling, and also can supply power for an alternating current power supply, and the interface circuit is an RS485 interface or an RS232 interface.
The data management comprises data transmission, data storage/query, report generation, alarm value management and temperature curve generation.
The user management module comprises user adding and deleting, user authority management and user password maintenance.
The invention has the beneficial effects that: the invention indirectly measures the internal temperature of the cable head according to the relation of the internal temperature and the external temperature gradient, realizes the online monitoring of the temperature rise of the cable joint, solves the power supply problem of the online monitoring device of the temperature rise of the cable joint by utilizing the magnetic saturation electricity-taking technology, utilizes the saturation characteristic of a small CT in the design, leads the CT to obtain stable working voltage in a wider current range (30A-500A) so as to ensure that a wireless communication system of monitoring equipment can normally, reliably and stably run for a long time, and a monitoring center analyzes the received information and compares the temperature data transversely and longitudinally by mainly receiving, displaying and storing the information such as the temperature sent from the site, thereby accurately judging the abnormal temperature rise; the invention has the advantages of good monitoring effect, stable operation and accurate judgment.
Drawings
Fig. 1 is a general research framework diagram of the present invention.
Fig. 2 is a structural diagram of a data management platform of the monitoring center of the invention.
FIG. 3 is a block diagram of the cable joint temperature rise site monitoring unit of the present invention.
Fig. 4 is a schematic structure diagram of the cable joint temperature rise field monitoring sensor.
Fig. 5 is a hierarchical diagram of a power distribution communication network according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in figures 1-5, a cable joint and temperature rise remote monitoring equipment system of a temperature gradient method comprises a cable joint temperature rise field monitoring unit, a remote communication platform and a monitoring center, wherein the cable joint temperature rise field monitoring unit is connected with the remote communication platform, the field-collected cable joint temperature information is transmitted to the monitoring center for analysis through the remote communication platform, the cable joint temperature rise field monitoring unit comprises a cable head and a detection unit, the cable head is formed by connecting cable accessories such as an insulating sleeve, an elbow type plug and a T-shaped plug, the detection unit comprises an A-phase temperature measurement unit, a B-phase temperature measurement unit, a C-phase temperature measurement unit, an environmental temperature sensor, a data collector, an external power circuit and an interface circuit, the A-phase temperature measurement unit, the B-phase temperature measurement unit and the C-phase temperature measurement unit are respectively fixed on the cable heads of corresponding phases, the A-phase temperature measuring unit, the B-phase temperature measuring unit and the C-phase temperature measuring unit respectively comprise a temperature sensor, a heat insulating material and a fixing binding belt, the temperature sensor is arranged in the heat insulating material, the temperature sensor and the heat insulating material are fixed on a cable head through the fixing binding belt, the data collector comprises a microprocessor, a key circuit, a display circuit and a power supply conversion circuit, the A-phase temperature measuring unit, the B-phase temperature measuring unit, the C-phase temperature measuring unit and an environment temperature sensor are respectively connected with an A/D end of the microprocessor, the interface circuit is a 485 interface, the remote communication platform mainly adopts an electric power private network optical fiber mode, a wireless broadband private network and a medium-voltage power line carrier communication technology are used as supplements, and in an area which part of the electric power private network cannot be covered, a GPRS/CDMA/3G public network communication mode of a communication operator can be used as, but the public network communication mode is only limited to the applications such as terminal communication and the like which do not need a remote control function, the monitoring center is established based on an expert system and comprises a data communication module, a data management module and a user management module, and the data communication module is electrically connected with the cable joint temperature rise field monitoring unit through a 485 interface of an interface circuit.
The temperature measuring device comprises an A-phase temperature measuring unit, a B-phase temperature measuring unit and a C-phase temperature measuring unit, wherein the A-phase temperature measuring unit, the B-phase temperature measuring unit and the C-phase temperature measuring unit respectively comprise a temperature sensor, a heat insulating material and a fixing binding belt, the temperature sensor is arranged on an outer surface layer of a heating part on one side of the cable head, a special sensor mounting belt with heat insulation is bound, the temperature sensor is tightly attached to a surface layer of the cable head accessory, the heat insulating material is filled in a temperature sensor housing, a heating point is conducted to a local temperature on the surface layer of the cable head accessory to be kept, meanwhile, an environment temperature sensor is arranged on one side of the cable head, compensation data determined by experiments in advance are obtained by measuring the difference.
The ring main unit is formed by 3-4 cable joint temperature rise field monitoring units, a group of temperature measuring transmitters are arranged at intervals on each ring main unit, and the temperature measuring transmitters are used for transmitting the working temperature of the cable joints measured by the A-phase temperature measuring unit, the B-phase temperature measuring unit, the C-phase temperature measuring unit and the environment temperature sensor.
And data information is transmitted between the data acquisition unit and the temperature measurement transmitter through an RS485 interface.
The power supply circuit of the high-voltage switch contact temperature acquisition part has a wider current range (30A-500A) by adopting a small CT and a magnetic saturation technology, mainly researches the electromagnetic coupling principle, obtains electric energy by adopting the small CT, and ensures that the current can provide stable working electric energy for the temperature measuring device within the range of (30A-500A) by utilizing the characteristic that the magnetic induction intensity of an electromagnetic iron core of the small CT tends to saturation when the small CT passes through larger current, so as to ensure that the monitoring device works reliably for a long time and can bear the impact of short-circuit current 31.5KA within 3 seconds in a short time.
The remote communication platform adopts a PON system to become a distribution network automation station information access mode with the unique technical advantages, the PON system networking is well used for solving the construction of a matched optical cable, and the optical splitting network configuration is reasonably arranged. For newly building and modifying distribution lines, an OPLC optical cable can be adopted, and for old lines, an ADSS or a common optical cable is suitable to be erected. According to the characteristic that the distribution network information points are connected in series along with the distribution network lines in a chain manner, the ODN network preferably adopts unequal optical splitters so as to ensure the flexibility and expansibility of the network.
Example 2
As shown in figures 1-5, a cable joint and temperature rise remote monitoring equipment system of a temperature gradient method comprises a cable joint temperature rise field monitoring unit, a remote communication platform and a monitoring center, wherein the cable joint temperature rise field detection unit is connected with the remote communication platform, the field collected cable joint temperature information is transmitted to the monitoring center for analysis through the remote communication platform, the cable joint temperature rise field monitoring unit comprises a cable head and a detection unit, the detection unit comprises an A-phase temperature measurement unit, a B-phase temperature measurement unit, a C-phase temperature measurement unit, an environmental temperature sensor, a data acquisition unit, an external power circuit and an interface circuit, the data acquisition unit comprises a microprocessor, a key circuit, a display circuit and a power conversion circuit, the A-phase temperature measurement unit, the B-phase temperature measurement unit, the C-phase temperature measurement unit and the environmental temperature sensor are respectively connected with an A/D end of the microprocessor, the monitoring center comprises a data communication module, a data management module and a user management module, wherein the data communication module is electrically connected with the cable joint temperature rise field monitoring unit through an RS485 interface of the interface circuit.
The invention indirectly measures the internal temperature of the cable head according to the relation of the internal temperature and the external temperature gradient, realizes the online monitoring of the temperature rise of the cable joint, solves the power supply problem of the online monitoring device of the temperature rise of the cable joint by utilizing the magnetic saturation electricity-taking technology, utilizes the saturation characteristic of a small CT in the design, leads the CT to obtain stable working voltage in a wider current range (30A-500A) so as to ensure that a wireless communication system of monitoring equipment can normally, reliably and stably run for a long time, and a monitoring center analyzes the received information and compares the temperature data transversely and longitudinally by mainly receiving, displaying and storing the information such as the temperature sent from the site, thereby accurately judging the abnormal temperature rise; the invention has the advantages of good monitoring effect, stable operation and accurate judgment.
Claims (6)
1. The utility model provides a cable joint and temperature rise remote monitoring equipment system of temperature gradient method, it includes cable joint temperature rise on-the-spot monitoring unit, telecommunication platform and surveillance center, its characterized in that: the cable joint temperature rise on-site detection unit is connected with the remote communication platform, the cable joint temperature information acquired on site is transmitted to the monitoring center for analysis through the remote communication platform, the cable joint temperature rise on-site monitoring unit comprises a cable head and a detection unit, the detection unit comprises an A-phase temperature measurement unit, a B-phase temperature measurement unit, a C-phase temperature measurement unit, an environment temperature sensor, a data acquisition unit, an external power circuit and an interface circuit, the data acquisition unit comprises a microprocessor, a key circuit, a display circuit and a power conversion circuit, the A-phase temperature measurement unit, the B-phase temperature measurement unit, the C-phase temperature measurement unit and the environment temperature sensor are respectively connected with the A/D end of the microprocessor, and the monitoring center comprises a data communication module, a data management module and a user management module.
2. The system of claim 1, wherein the system further comprises: a looks temperature measuring unit, B looks temperature measuring unit and C looks temperature measuring unit are fixed respectively on corresponding looks cable head, and A looks temperature measuring unit, B looks temperature measuring unit and C looks temperature measuring unit all include temperature sensor, insulation material and fixed ribbon, and temperature sensor puts inside insulation material, and temperature sensor and insulation material are fixed on cable head by fixed ribbon.
3. The system of claim 1, wherein the system further comprises: the remote communication platform mainly adopts an optical fiber mode of a special power network, supplements a wireless broadband special network and a medium-voltage power line carrier communication technology, and supplements a GPRS/CDMA/3G public network communication mode of a communication operator in an area which can not be covered by a part of special power communication networks.
4. The system of claim 1, wherein the system further comprises: the external power supply circuit can supply power for a solar battery, can also supply power for the battery, can also get electricity and supply power for CT coupling, and can also supply power for an alternating current power supply, and the interface circuit is an RS485 interface or an RS232 interface.
5. The system of claim 1, wherein the system further comprises: the data management comprises data transmission, data storage/query, report generation, alarm value management and temperature curve generation.
6. The system of claim 1, wherein the system further comprises: the user management module comprises adding and deleting users, user authority management and user password maintenance.
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| CN201910988603.XA CN110631723A (en) | 2019-10-17 | 2019-10-17 | Cable joint and temperature rise remote monitoring equipment system of temperature gradient method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766476A (en) * | 2020-07-14 | 2020-10-13 | 广东电网有限责任公司 | Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof |
| CN112200998A (en) * | 2020-09-30 | 2021-01-08 | 四川瑞霆电力科技有限公司 | Early fire early warning method and system applied to power equipment and storage medium thereof |
| CN113091949A (en) * | 2021-02-18 | 2021-07-09 | 深圳供电局有限公司 | Cable state detection method, device and equipment |
| WO2024077675A1 (en) * | 2022-10-14 | 2024-04-18 | 云南电网有限责任公司普洱供电局 | Distributed online temperature monitoring system applied to power supply loop |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749150A (en) * | 2011-04-20 | 2012-10-24 | 常州帕斯菲克自动化技术有限公司 | Cable head temperature online monitoring device |
| CN202888963U (en) * | 2012-09-29 | 2013-04-17 | 上海市电力公司 | Automatic communication system for master station control power distribution network |
| CN103575415A (en) * | 2013-09-13 | 2014-02-12 | 国家电网公司 | On-line temperature monitoring system and method for intermediate joints of buried cable |
| CN103808430A (en) * | 2012-11-12 | 2014-05-21 | 常州帕斯菲克自动化技术股份有限公司 | High-voltage device cable head temperature online monitoring device |
| CN104166061A (en) * | 2014-08-20 | 2014-11-26 | 河海大学常州校区 | Intelligent power distribution and utilization state detection device based on 4D technology |
| CN107702804A (en) * | 2017-09-15 | 2018-02-16 | 国网浙江嘉善县供电公司 | A kind of cable intermediate joint temperature rise on-line monitoring system and method based on temperature difference method |
| CN108918949A (en) * | 2018-06-27 | 2018-11-30 | 国网上海市电力公司 | Super-pressure based on circulation monitoring method stops cable technical precaution monitoring system and method |
-
2019
- 2019-10-17 CN CN201910988603.XA patent/CN110631723A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749150A (en) * | 2011-04-20 | 2012-10-24 | 常州帕斯菲克自动化技术有限公司 | Cable head temperature online monitoring device |
| CN202888963U (en) * | 2012-09-29 | 2013-04-17 | 上海市电力公司 | Automatic communication system for master station control power distribution network |
| CN103808430A (en) * | 2012-11-12 | 2014-05-21 | 常州帕斯菲克自动化技术股份有限公司 | High-voltage device cable head temperature online monitoring device |
| CN103575415A (en) * | 2013-09-13 | 2014-02-12 | 国家电网公司 | On-line temperature monitoring system and method for intermediate joints of buried cable |
| CN104166061A (en) * | 2014-08-20 | 2014-11-26 | 河海大学常州校区 | Intelligent power distribution and utilization state detection device based on 4D technology |
| CN107702804A (en) * | 2017-09-15 | 2018-02-16 | 国网浙江嘉善县供电公司 | A kind of cable intermediate joint temperature rise on-line monitoring system and method based on temperature difference method |
| CN108918949A (en) * | 2018-06-27 | 2018-11-30 | 国网上海市电力公司 | Super-pressure based on circulation monitoring method stops cable technical precaution monitoring system and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766476A (en) * | 2020-07-14 | 2020-10-13 | 广东电网有限责任公司 | Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof |
| CN112200998A (en) * | 2020-09-30 | 2021-01-08 | 四川瑞霆电力科技有限公司 | Early fire early warning method and system applied to power equipment and storage medium thereof |
| CN113091949A (en) * | 2021-02-18 | 2021-07-09 | 深圳供电局有限公司 | Cable state detection method, device and equipment |
| WO2024077675A1 (en) * | 2022-10-14 | 2024-04-18 | 云南电网有限责任公司普洱供电局 | Distributed online temperature monitoring system applied to power supply loop |
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Application publication date: 20191231 |