CN102937484A - Temperature online monitoring unit of electric bus - Google Patents
Temperature online monitoring unit of electric bus Download PDFInfo
- Publication number
- CN102937484A CN102937484A CN2012104454146A CN201210445414A CN102937484A CN 102937484 A CN102937484 A CN 102937484A CN 2012104454146 A CN2012104454146 A CN 2012104454146A CN 201210445414 A CN201210445414 A CN 201210445414A CN 102937484 A CN102937484 A CN 102937484A
- Authority
- CN
- China
- Prior art keywords
- temperature
- power bus
- bar
- line
- monitoring unit
- 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.)
- Pending
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a temperature online monitoring unit of an electric bus. The electric bus is formed by connecting a plurality of sections of insulation tubular buses into a string through middle joints. The temperature online monitoring unit comprises a power supply unit, a plurality of temperature sensing units and a data collection unit, wherein the temperature sensing units are assembled in the electric bus, serially connected in unibus connection mode and respectively arranged at the middle joint positions of the plurality of sections of insulation tubular buses in the electric bus correspondingly, each temperature sensing unit is used for sensing the temperature of a corresponding middle joint position, and the data collection unit is connected with the plurality of temperature sensing units and used for collecting temperature data uploaded by all the temperature sensing units. Compared with the prior art, the temperature online monitoring unit achieves real-time monitoring and early warning of operation states of the whole electric bus, and correspondingly improves intelligentization and operation safety of the electric bus.
Description
Technical field
The invention belongs to the wireline inspection technical field, particularly a kind of on-line temperature monitoring unit of power bus-bar.
Background technology
Along with China's rapid development of economy, unprecedented soaring for electricity capacity, the step down side rated current is also continuing to increase.At present, 110KV and 220KV transformer separate unit capacity reach 120MVA, and low-pressure side bus voltage is 6.3KV～35KV, and working current is up to 2000A～11000A.Simultaneously, during China's separate unit capacity 125MW and following thermal power generation unit are in and close down gradually.200MW, 300MW and 600MW machine consist of the main flow generating set, and its corresponding outlet voltage is respectively 15.75KV, 18KV and 20KV, and the outlet electric current is respectively 8625A, 11320A and 19000A.Conventional rectangular bus bar can't satisfy the requirement at above-mentioned large electric current Down Highway heating and short-circuit electromotive force on technology and structure.Simultaneously, the increase of skin effect coefficient and added losses brings declining to a great extent of traditional rectangular bus current capacity, has a strong impact on and restrict the safe operation of transformer station.The advantages such as the Novel dry insulating tube type busbar is large because of its capacity, volume is little and energy-conservation are just replacing conventional rectangular bus bar, obtain using more and more widely in electric system.
Although this Novel dry insulating tube type busbar has plurality of advantages, but electrodynamic impact may cause the increase of joint contact resistance under the quality of joint technique and the large current work state, so that the joint temperature rise is excessive, advantage is just replacing conventional rectangular bus bar to affect that the novel all-insulating tubular bus of the safe operation of bus is large because of its capacity, volume is little and energy-conservation etc., obtains using more and more widely in electric system.All-insulating tubular bus in the transformer station is formed by single bus serial connection usually, and the quality of joint technique can affect the resistance of joint, and then affects the work temperature rise of bus; Mechanical resonance may occur in bus under electrodynamic effect, cause the fracture of bus when serious.Therefore, temperature rise and vibration are the principal elements that affects the bus safe operation.
The reasons such as mechanical vibration that can cause because of electrical wear, mechanically actuated and short-circuit electromotive force in During Process of Long-term Operation median generatrix junction, contact conditions is worsened, contact resistance increases, and causes that the temperature of contact point raises, the oxidation of aggravation surface in contact, the result of oxidation causes again contact resistance to rise, form vicious cycle, last, because the impact of high temperature might make adjacent insulating element performance degradation, even puncture the safe operation of harm bus.In recent years, in power plant and transformer station a lot of bus excess temperature accidents having occured, causes electrical fire and large-area power outage, thereby need to carry out on-line temperature monitoring to the bus junction.
Summary of the invention
The object of the present invention is to provide a kind of on-line temperature monitoring unit of power bus-bar, be used for solving prior art power bus-bar temperature data can not Real-Time Monitoring, monitoring inconvenience, can not in time find the problem such as fault.
For solving above-mentioned and other problem, the invention provides a kind of on-line temperature monitoring unit of power bus-bar, described power bus-bar is to utilize the intermediate head serial connection to form by the multistage insulating tube type busbar; Described on-line temperature monitoring unit comprises: power supply unit; Be assemblied in a plurality of temperature sensing units that described power bus-bar is inner, adopt unibus connected mode serial connection, respectively corresponding intermediate head place that is arranged on multistage insulating tube type busbar in the described power bus-bar; Each temperature sensing unit is used for the temperature of intermediate head place corresponding to sensing; The data acquisition unit that is connected with a plurality of temperature sensing units is used for gathering the temperature data that each temperature sensing unit is uploaded.
Alternatively, in described unibus connected mode, comprising: power lead, ground wire and data line.
Alternatively, on the main line of power bus-bar inside: power lead and ground wire consist of the first twisted-pair feeder, and data line and ground wire consist of the second twisted-pair feeder.
Alternatively, between the data line of the main line of the data line of described temperature sensing unit and described power bus-bar, also be provided with repeating resistance.
Alternatively, described intermediate head is three-way connection.
Alternatively, described power supply unit provides+direct supply of 5V.
Alternatively, described temperature sensing unit is digital temperature sensor.
Alternatively, the performance parameter of described temperature sensing unit comprises: 12 of highest resolutions, precision can reach ± 0.5 degree centigrade, and 750 milliseconds of maximum operating times during 12 bit resolution, detected temperatures scope-55 is ℃ to 125 ℃.
Alternatively, described data acquisition unit comprises the communication interface for the temperature data uploading that will gather.
The on-line temperature monitoring unit of power bus-bar provided by the invention, utilization each intermediate node place in power bus-bar arranges a temperature sensing unit to be used for the temperature at the corresponding intermediate node of sensing place, and utilize the unibus connected mode that a plurality of temperature sensing units are connected in series, so that the temperature data that a plurality of temperature sensing unit sensings obtain concentrate be sent to data acquisition unit that they are connected in, finish the at-once monitor of intermediate node place temperature and the centralized management of each data of monitoring point, Real-Time Monitoring and the early warning of whole piece power bus-bar running status have been realized, corresponding intelligent level and the Operation safety that has improved power bus-bar.
Description of drawings
Fig. 1 is the on-line temperature monitoring unit functional block diagram in one embodiment of power bus-bar of the present invention.
Fig. 2 has shown the application synoptic diagram of on-line temperature monitoring unit in an instantiation of power bus-bar of the present invention.
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be used by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
See also accompanying drawing.Notice, the appended graphic structure that illustrates of this instructions, ratio, size etc., equal contents in order to cooperate instructions to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the present invention, so technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the purpose that can reach, all should still drop on disclosed technology contents and get in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the present invention.
The present invention is described in detail below in conjunction with embodiment and accompanying drawing.
The invention provides a kind of on-line temperature monitoring unit of power bus-bar, comprising: power supply unit; Be assemblied in a plurality of temperature sensing units that described power bus-bar is inner, adopt unibus connected mode serial connection; The data acquisition unit that is connected with a plurality of temperature sensing units.Be used for solving prior art power bus-bar temperature data can not Real-Time Monitoring, monitoring inconvenience, can not in time find the problem such as fault.
Fig. 1 has shown the on-line temperature monitoring unit configuration diagram in one embodiment of power bus-bar of the present invention.As shown in Figure 1, described on-line temperature monitoring unit comprises: power supply unit 11, a plurality of temperature sensing unit 13 and data acquisition unit 15.
Below above-mentioned unit is elaborated.
Power supply unit 11 is used for providing power supply.In actual applications, power supply unit 11 can be accumulator, has the advantages such as electric power is lasting, installation is convenient.Certainly, not as limit, under other situations, power supply unit 11 also can be by sun power power taking or the equipment of mode power taking by the induction power taking.
A plurality of temperature sensing units 13 are corresponding intermediate head place that is arranged on multistage insulating tube type busbar in the described power bus-bar respectively, and wherein, each temperature sensing unit 13 is used for the temperature of intermediate head place corresponding to sensing.In the present invention, a plurality of temperature sensing units 13 adopt unibus connected mode serial connection to form.
Data acquisition unit 15 adopts the unibus connected mode to be connected with a plurality of temperature sensing units 13, is used for gathering the temperature data that each temperature sensing unit 13 is uploaded, and each temperature data is carried out centralized management.In addition, data acquisition unit 15 can also comprise communication interface, is used for by wire transmission mode (such as optical fiber etc.) or wireless transmission method (such as mobile network 2G, GPRS, 3G etc.) the temperature data uploading that collects to the server of far-end or Surveillance center etc. again.
As above as can be known, utilization each intermediate node place in power bus-bar arranges a temperature sensing unit, and each temperature sensing unit is serially connected, the temperature data that sensing is obtained concentrate be sent to data acquisition unit that they are connected in, thereby can carry out Real-Time Monitoring to the running status of whole piece power bus-bar by the temperature data that gathers, can whether produce fault according to which intermediate head that temperature data is judged power bus-bar, thereby determine abort situation, realize early warning.
Fig. 2 has shown the application synoptic diagram of on-line temperature monitoring unit in an instantiation of power bus-bar of the present invention.
In conjunction with Fig. 1 and Fig. 2, as can be known, article one, power bus-bar is to utilize the intermediate head serial connection to form by the multistage insulating tube type busbar, insulating tube type busbar has that capacity is large, volume is little and the advantage such as energy-conservation, intermediate head is used for the joint of adjacent two sections insulating tube type busbars is connected mutually, what in this example, described intermediate head was adopted is three-way connection.In addition, it should be noted that the length of a power bus-bar depends on the length of each section isolated bus and the hop count of isolated bus.Generally speaking, the quantity maximum of insulating tube type busbar can be 32 sections in power bus-bar.
Power supply unit 11 provides power supply unit to provide+direct supply of 5V.
Temperature sensing unit 13 correspondences are arranged on intermediate head place of power bus-bar.
In this example, temperature sensing unit is digital temperature sensor, for example is digital temperature sensor DS18B20.The principal character of digital temperature sensor 13 is: digital temperature transition and output, advanced unibus data communication.Performance parameter comprises: 12 of highest resolutions, precision can reach ± 0.5 degree centigrade, and 750 milliseconds of maximum operating times during 12 bit resolution, detected temperatures scope-55 is ℃ to 125 ℃.In order to guarantee that the power bus-bar outward appearance is complete attractive in appearance, preferably, monitoring point, digital temperature sensor and wire all are arranged on the inside of power bus-bar.
Especially, in this example, each digital temperature sensor adopts the unibus connected mode to be connected in series, that is, each digital temperature sensor carries out data transmission by data line.Particularly, in described unibus connected mode, comprising: power lead, ground wire and data line.On the main line of power bus-bar inside, in order to realize remote data acquisition and the normal data transmission of assurance, preferably, adopt twisted pair line connection, that is, power lead and ground wire consist of the first twisted-pair feeder, and data line and ground wire consist of the second twisted-pair feeder.In addition, for each digital temperature sensor 13, be to link to each other with power lead, ground wire and data line in the main line of power bus-bar inside respectively by power lead, ground wire and data line.Especially, between the data line of the main line of the data line of digital temperature sensor 13 and power bus-bar, also be provided with repeating resistance R, have the signal reflex of preventing and the effect such as anti-interference, thus can guarantee digital temperature sensor 13 relatively more accurately sensings go out the real-time temperature at corresponding intermediate contact place.
In sum, the on-line temperature monitoring unit of power bus-bar provided by the invention, utilization each intermediate node place in power bus-bar arranges a temperature sensing unit to be used for the temperature at the corresponding intermediate node of sensing place, and utilize the unibus connected mode that a plurality of temperature sensing units are connected in series, so that the temperature data that a plurality of temperature sensing unit sensings obtain concentrate be sent to data acquisition unit that they are connected in, finish the at-once monitor of intermediate node place temperature and the centralized management of each data of monitoring point, Real-Time Monitoring and the early warning of whole piece power bus-bar running status have been realized, corresponding intelligent level and the Operation safety that has improved power bus-bar.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (9)
1. the on-line temperature monitoring unit of a power bus-bar, described power bus-bar are to utilize the intermediate head serial connection to form by the multistage insulating tube type busbar, it is characterized in that described on-line temperature monitoring unit comprises:
Power supply unit;
Be assemblied in a plurality of temperature sensing units that described power bus-bar is inner, adopt unibus connected mode serial connection, respectively corresponding intermediate head place that is arranged on multistage insulating tube type busbar in the described power bus-bar; Each temperature sensing unit is used for the temperature of intermediate head place corresponding to sensing;
The data acquisition unit that is connected with a plurality of temperature sensing units is used for gathering the temperature data that each temperature sensing unit is uploaded.
2. the on-line temperature monitoring unit of power bus-bar according to claim 1 is characterized in that, in described unibus connected mode, comprising: power lead, ground wire and data line.
3. the on-line temperature monitoring unit of power bus-bar according to claim 2 is characterized in that, on the main line of power bus-bar inside: power lead and ground wire consist of the first twisted-pair feeder, and data line and ground wire consist of the second twisted-pair feeder.
4. according to claim 2 or the on-line temperature monitoring unit of 3 described power bus-bars, it is characterized in that, between the data line of the main line of the data line of described temperature sensing unit and described power bus-bar, also be provided with repeating resistance.
5. the on-line temperature monitoring unit of power bus-bar according to claim 1 is characterized in that, described intermediate head is three-way connection.
6. the on-line temperature monitoring unit of power bus-bar according to claim 1 is characterized in that, described power supply unit provides+and the direct supply of 5V.
7. the on-line temperature monitoring unit of power bus-bar according to claim 1 is characterized in that, described temperature sensing unit is digital temperature sensor.
8. the on-line temperature monitoring unit of power bus-bar according to claim 7, it is characterized in that, the performance parameter of described temperature sensing unit comprises: 12 of highest resolutions, precision can reach ± and 0.5 degree centigrade, 750 milliseconds of maximum operating times during 12 bit resolution, detected temperatures scope-55 is ℃ to 125 ℃.
9. the on-line temperature monitoring unit of power bus-bar according to claim 1 is characterized in that, described data acquisition unit comprises the communication interface for the temperature data uploading that will gather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104454146A CN102937484A (en) | 2012-11-08 | 2012-11-08 | Temperature online monitoring unit of electric bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104454146A CN102937484A (en) | 2012-11-08 | 2012-11-08 | Temperature online monitoring unit of electric bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102937484A true CN102937484A (en) | 2013-02-20 |
Family
ID=47696395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104454146A Pending CN102937484A (en) | 2012-11-08 | 2012-11-08 | Temperature online monitoring unit of electric bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102937484A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504888A (en) * | 2014-12-08 | 2015-04-08 | 国家电网公司 | Full-insulating bus multipoint temperature measuring single conductor communication system |
| CN107764332A (en) * | 2017-10-30 | 2018-03-06 | 李毅 | A kind of enclosed busbar runs detecting system |
| CN111913127A (en) * | 2020-06-29 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Intelligent detection device and method for tubular bus |
| CN111969378A (en) * | 2020-09-17 | 2020-11-20 | 深圳市雄韬锂电有限公司 | AC power supply line and cabinet device |
| CN112564116A (en) * | 2021-02-26 | 2021-03-26 | 湖北鑫英泰系统技术股份有限公司 | Line load scheduling method and system based on passive wireless temperature measurement system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201340311Y (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 shield insulating tubular bus |
| 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 |
| CN201724748U (en) * | 2010-04-30 | 2011-01-26 | 北京科力通电气股份有限公司 | Bus temperature monitoring system |
| KR101034386B1 (en) * | 2010-09-28 | 2011-05-16 | 주식회사 창성에이스산업 | Temperature measuring cable |
| CN202119547U (en) * | 2011-05-25 | 2012-01-18 | 西安远征智能软件有限公司 | System used to measure contact temperature of electrical device |
-
2012
- 2012-11-08 CN CN2012104454146A patent/CN102937484A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201340311Y (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 shield insulating tubular bus |
| 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 |
| CN201724748U (en) * | 2010-04-30 | 2011-01-26 | 北京科力通电气股份有限公司 | Bus temperature monitoring system |
| KR101034386B1 (en) * | 2010-09-28 | 2011-05-16 | 주식회사 창성에이스산업 | Temperature measuring cable |
| CN202119547U (en) * | 2011-05-25 | 2012-01-18 | 西安远征智能软件有限公司 | System used to measure contact temperature of electrical device |
Non-Patent Citations (2)
| Title |
|---|
| 张杰: "电缆中间接头在线监测技术", 《电工技术》 * |
| 王慧等: "电力电缆中间接头温度的测量与监视", 《测控技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504888A (en) * | 2014-12-08 | 2015-04-08 | 国家电网公司 | Full-insulating bus multipoint temperature measuring single conductor communication system |
| CN107764332A (en) * | 2017-10-30 | 2018-03-06 | 李毅 | A kind of enclosed busbar runs detecting system |
| CN111913127A (en) * | 2020-06-29 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Intelligent detection device and method for tubular bus |
| CN111969378A (en) * | 2020-09-17 | 2020-11-20 | 深圳市雄韬锂电有限公司 | AC power supply line and cabinet device |
| CN112564116A (en) * | 2021-02-26 | 2021-03-26 | 湖北鑫英泰系统技术股份有限公司 | Line load scheduling method and system based on passive wireless temperature measurement system |
| CN112564116B (en) * | 2021-02-26 | 2021-05-04 | 湖北鑫英泰系统技术股份有限公司 | Line load scheduling method and system based on passive wireless temperature measurement system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203561700U (en) | Lightning arrester on-line monitoring system | |
| CN102064537B (en) | Method for judging and processing single-phase earth faults by using electronic mutual inductor | |
| CN102937484A (en) | Temperature online monitoring unit of electric bus | |
| CN203455714U (en) | ZigBee wireless monitoring system of power line towers | |
| CN103344885A (en) | High-voltage single-core cable protective covering grounding online monitoring device and control method | |
| CN203572909U (en) | Single-phase ground fault detection circuit and system | |
| CN103674291A (en) | Temperature monitoring system of all-insulated bus | |
| CN202759221U (en) | Network relay protection device capable of realizing rapid fault isolation and reconstruction | |
| CN205898921U (en) | Box -type substation current -carrying failure predication system | |
| CN203940885U (en) | Cable sheath circulation on-Line Monitor Device | |
| CN202275648U (en) | Middling voltage fiber composite cable of copper strip shielding fiber with temperature measurement and communication function | |
| CN203455440U (en) | High-voltage single core cable protective layer grounding online monitoring device | |
| CN213581218U (en) | Intelligent on-line monitoring and early warning device for partial discharge of medium-high voltage cable and cable accessory | |
| CN203289188U (en) | An intelligent combiner box with fire pre-alarming and alarming functions | |
| CN105305959B (en) | A kind of photovoltaic performance intelligent checking system | |
| CN204945313U (en) | A kind of high voltage direct current distribution insulation against ground supervisory device | |
| CN209329781U (en) | A kind of distribution O&M monitoring device | |
| CN204408023U (en) | A kind of monitoring system of electric substation | |
| CN103384090A (en) | Wireless auxiliary monitoring system for substation | |
| CN203396822U (en) | On-line monitoring device for grounding currents flowing through sheaths of high-voltage single-core cables | |
| CN204270713U (en) | A kind of multifunctional optical fiber composite medium-pressure cable | |
| CN205210162U (en) | High tension cable sheath earth current on -line monitoring system | |
| CN205317235U (en) | Substation operation environmental monitoring system | |
| CN203385486U (en) | Online temperature monitoring device for grounding wires of sheath of high-voltage single-core cable | |
| CN103335734A (en) | On-line monitoring device for temperature of grounding wires of high-voltage single-core cable sheaths, and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130220 |