CN103674291A - Temperature monitoring system of all-insulated bus - Google Patents

Temperature monitoring system of all-insulated bus Download PDF

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Publication number
CN103674291A
CN103674291A CN201210429052.1A CN201210429052A CN103674291A CN 103674291 A CN103674291 A CN 103674291A CN 201210429052 A CN201210429052 A CN 201210429052A CN 103674291 A CN103674291 A CN 103674291A
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China
Prior art keywords
temperature
monitoring
bus
insulation bus
insulation
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CN201210429052.1A
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Chinese (zh)
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曾奕
徐建平
陈定强
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曾奕
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Abstract

The invention provides a temperature monitoring system of an all-insulated bus. The temperature monitoring system comprises M bus monitoring units, a monitoring data collection unit, and a monitoring data processing server. The bus monitoring units are used for measuring the temperature of an all-insulated bus contact. Each of the bus monitoring units comprises N digital temperature sensors, a temperature measurement unit and a battery module. The digital temperature sensor is used for sensing the temperature of the all-insulated bus contact. The temperature measurement unit is used for the regular measurement and reading and overlimit measurement and reading of the temperature of the all-insulated bus contact and carrying out wireless communication on the temperature data which is obtained through measurement. The monitoring data collection unit is used for receiving the measured temperature data from the temperature measurement unit and forwarding the data. The monitoring data processing server is used for receiving the temperature data obtained through measurement and carrying out management, query and storage on the data. According to the temperature monitoring system of the all-insulated bus, the real-time monitoring and early warning of an all-insulated bus running state are realized, and the reliability of power supply is raised.

Description

The temperature monitoring system of all insulation bus
Technical field
The invention belongs to the defeated distribution wiring system technical field that supplies of transformer station, relate to a kind of temperature monitoring system, particularly relate to a kind of temperature monitoring system of all insulation bus.
Background technology
Along with China's rapid development of economy, unprecedented soaring for electricity capacity, 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.Meanwhile, 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 main flow generating set, and its corresponding outlet voltage is respectively 15.75kV, 18kV and 20kV, and outlet electric current is respectively 8625A, 11320A and 19000A.Conventional rectangular bus bar, in technology and structure, cannot meet the requirement at above-mentioned large electric current Down Highway heating and short-circuit electromotive force.Meanwhile, 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.Novel dry insulating tube type busbar, because the advantages such as its capacity is large, volume is little and energy-conservation are just replacing conventional rectangular bus bar, obtains applying more and more widely in electric system.
Although this Novel dry insulating tube type busbar has plurality of advantages, under the quality of joint technique and large current work state, electrodynamic impact may cause the increase of joint contact resistance, makes joint temperature rise excessive, affects the safe operation of bus.Novel all insulation bus, because the advantages such as its capacity is large, volume is little and energy-conservation are just replacing conventional rectangular bus bar, obtains applying more and more widely in electric system.All insulation bus in transformer station is formed by single bus serial connection conventionally, and the quality of joint technique can affect the resistance of joint, and then affects the work temperature rise of bus; May there is mechanical resonance in bus, cause the fracture of bus when serious under electrodynamic effect.Therefore, temperature rise and vibration are the principal elements that affects 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 likely makes adjacent insulating element performance degradation, even puncture the safe operation of harm bus.In recent years, in power plant and transformer station, there are a lot of bus excess temperature accidents, caused electrical fire and large-area power outage, thereby need to carry out on-line temperature monitoring to bus junction.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of temperature monitoring system of all insulation bus, the problem because of temperature rise, its safe operation being impacted for solving prior art median generatrix.
For achieving the above object and other relevant objects, the invention provides a kind of temperature monitoring system of all insulation bus.Described temperature monitoring system comprises: M bus monitoring means, Monitoring Data centralized unit, Monitoring Data processing server;
Described M bus monitoring means, all insulation bus of measuring with need is connected, and for measuring the temperature of all insulation bus contact joint, wherein, M is greater than 1 to be less than or equal to 9 positive integer, and all insulation bus number that M is measured by need decides; Described bus monitoring means comprises: N digital temperature sensor, temperature measurement unit and battery module;
A described N digital temperature sensor, is connected to the inside of described all insulation bus, and for responding to the temperature of all insulation bus contact joint, N is greater than 1 to be less than or equal to 32 positive integer, and N is decided by the length of all insulation bus;
Described temperature measurement unit, is connected respectively with N digital temperature sensor, reads, transfinites to measure and read the temperature of all insulation bus contact joint, and the temperature data measuring is carried out to wireless telecommunications for Timing measurement;
Described Monitoring Data centralized unit, is wirelessly connected with described bus monitoring means, for receive the temperature data measuring from described temperature measurement unit, and is forwarded to described Monitoring Data processing server;
Described Monitoring Data processing server, is connected with described Monitoring Data centralized unit, for receiving the temperature data measuring and being managed, inquire about, store.
Preferably, described N digital temperature sensor adopts Single Wire Bus Technology to be equidistantly connected in series to all insulation bus inside.
Preferably, described M bus monitoring means also comprises battery module, connects respectively a described N digital temperature sensor and temperature measurement unit, is used to a described N digital temperature sensor and temperature measurement unit centrally connected power supply.
Preferably, described temperature measurement unit regularly reads the temperature of all insulation bus contact joint every day, if when measured temperature value surpasses predefined threshold value, described temperature measurement unit starts measurement immediately, and the temperature data measuring is communicated to described Monitoring Data centralized unit.
Preferably, Monitoring Data processing server is connected by RS485 communication interface with described Monitoring Data centralized unit.
Preferably, described Monitoring Data centralized unit is also for monitoring of environmental humiture.
Preferably, the ambient temperature and humidity measuring is for the reference as the temperature rise of all insulation bus.
As mentioned above, the temperature monitoring system of all insulation bus of the present invention, has following beneficial effect:
1, Real-Time Monitoring and the early warning of all insulation bus running status have been realized;
2, the intelligent level of all insulation bus and the security of operation have been improved;
3, improved the interference free performance of input;
4, increased the reliability detecting.
5, improved power supply reliability.
Accompanying drawing explanation
Fig. 1 is shown as the temperature monitoring system schematic diagram of all insulation bus of the present invention.
Element numbers explanation
1 M bus monitoring means
2 Monitoring Data centralized unit
3 Monitoring Data processing servers
A 11 N digital temperature sensor
12 temperature measurement units
13 battery modules
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 applied 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 not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
The present invention is based on sensing, measurement and wireless communication technique bus street corner temperature is implemented to monitoring.
The present embodiment provides a kind of temperature monitoring system of all insulation bus, and as shown in Figure 1, described temperature monitoring system comprises: M bus monitoring means 1, Monitoring Data centralized unit 2, Monitoring Data processing server 3.Wherein, M is greater than 1 to be less than or equal to 9 positive integer, and all insulation bus number that M is measured by need decides, and has several to need the bus of measuring just to have several bus monitoring means.Institute's bus monitoring means 1 is connected with needing all insulation bus of measuring, for measuring the contact temperature of all insulation bus.Wherein, described bus monitoring means 1 comprises N digital temperature sensor 11, temperature measurement unit 12(TMU) and battery module 13.Wherein, a described N digital temperature sensor 11, adopt Single Wire Bus Technology to be equidistantly connected in series to the inside of described all insulation bus, first digit temperature sensor is fixed on the joint of all insulation bus, for responding to the temperature of all insulation bus contact joint, N is greater than 1 to be less than or equal to 32 positive integer, and N is decided by the length of all insulation bus; By N digital temperature sensor according to equidistant series connection together, to the temperature of all insulation bus is measured, judge that whether busbar joint produces fault, determines abort situation.Described temperature measurement unit 12, is connected respectively with N digital temperature sensor 11, reads, transfinites to measure and read the temperature of all insulation bus contact joint, and the temperature data measuring is carried out to wireless telecommunications for Timing measurement.It is inner that described temperature measurement unit 12 is installed on all insulation bus duct.Under normal circumstances, described temperature measurement unit 12 can regularly read the temperature of all insulation bus every day, if when measured temperature value surpasses predefined threshold value, described temperature measurement unit 12 starts measurement immediately, and the temperature data measuring is communicated to described Monitoring Data centralized unit 2.Described battery module 13, connects respectively a described N digital temperature sensor 11 and temperature measurement unit 12, is used to a described N digital temperature sensor 11 and temperature measurement unit 12 centrally connected power supplies.When the temperature monitoring system interruption maintenance of described all insulation bus, change battery module 13, to guarantee that described temperature monitoring unit can work more than 2 years.
Monitoring Data centralized unit 2(TCU), be wirelessly connected with described bus monitoring means 1, for from described temperature measurement unit, receive the temperature data that measures and and measurement environment humiture, and forward it to described Monitoring Data processing server.Described Monitoring Data centralized unit 2 measurement environment humitures are for the reference as the temperature rise of all insulation bus.Described Monitoring Data centralized unit 2 can be used power frequency 220V ac power supply, also can use direct current 220V power supply.
Monitoring Data processing server is connected by RS485 communication interface with described Monitoring Data centralized unit 2, for receiving the temperature data measuring, and carried out storage and reproduce, and fault Seam tracking based on support vector machine (SVM) and data etc. are analyzed, analyzed to historical temperature trend.Wherein, described support vector machine is a kind of new mode identification method, and it stems from Statistical Learning Theory.Compare with neural network, under Small Sample Size, support vector machine more easily obtains optimal result.And support vector machine method has more solid mathematical theory basis, can effectively solve the High dimensional data model Construct question under finite sample condition, and have generalization ability strong, converge to the advantages such as global optimum, dimension be insensitive.Support vector machine is often used radial basis function as kernel function, and radial basis function width really photographic fixing rings the effect of classifying.
Data analysis processing expert system adopts support vector machine as main algorithm for pattern recognition, after to the pre-service of multisensor channel sample data, it is implemented to pattern-recognition, obtains the corresponding running status of connector temperature; Meanwhile, in conjunction with historical temperature trend record, provide the running status assessment result of bus.
Therefore, the operational process of the temperature monitoring system of all insulation bus of the present invention is as follows: the first digital temperature sensor 11 clamping connections in bus monitoring means 1 are to the joint of all insulation bus, the equally spaced clamping connection of remaining digital temperature sensor 11 is responded to the temperature of all insulation bus contact joint to the inside of all insulation bus, the temperature of all digital temperature sensor induction all insulation bus contact joints, all insulation bus contact joint is carried out to temperature monitoring, then, described temperature measurement unit 2 is realized the Timing measurement of temperature, transfinite and measure and data communication, be that described temperature measurement unit 2 regularly reads the temperature value of all insulation bus contact joint every every day, when if the temperature value reading surpasses the thresholding of setting, start and measure immediately, and the temperature data measuring is sent in Monitoring Data centralized unit 2, described temperature monitoring unit 2 receives to be surveyed after measured temperature data, it can be measured ambient temperature and humidity, as a reference.Finally, Monitoring Data processing server 3 receives after these data, and these data are managed, store, analyze, monitor the running status of all insulation bus, the abort situation of judgement all insulation bus, sends early warning.
The temperature monitoring system of all insulation bus provided by the invention adopts the technology of distributed intelligent sensor and Wireless Data Transmission, intelligent sensor is installed on to the joint of all insulation bus, and carry out on the spot digitizing all insulation busbar joint temperature is implemented to monitoring, realize monitoring and the early warning of bus running status, improve the intelligent level of bus and the security of operation.By bus is implemented to status monitoring, realize the intellectuality of bus, meet current intelligent grid for electric equipment intelligent Componentized demand; Can make electric system greatly reduce the expense for overhaul of the equipments, reduce power off time, power supply reliability is greatly improved, greatly improve the interference free performance of input.The present invention is by all insulation bus being carried out to temperature survey to judge whether busbar joint produces fault, and the problem location of definite fault joint, so that guide maintenance.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.

Claims (7)

1. a temperature monitoring system for all insulation bus, is characterized in that, described temperature monitoring system comprises: M bus monitoring means, Monitoring Data centralized unit, Monitoring Data processing server;
Described M bus monitoring means, all insulation bus of measuring with need is connected, and for measuring the temperature of all insulation bus contact joint, wherein, M is greater than 1 to be less than or equal to 9 positive integer, and all insulation bus number that M is measured by need decides; Described bus monitoring means comprises: N digital temperature sensor, temperature measurement unit and battery module;
A described N digital temperature sensor, is connected to the inside of described all insulation bus, and for responding to the temperature of all insulation bus contact joint, N is greater than 1 to be less than or equal to 32 positive integer, and N is decided by the length of all insulation bus;
Described temperature measurement unit, is connected respectively with N digital temperature sensor, reads, transfinites to measure and read the temperature of all insulation bus contact joint, and the temperature data measuring is carried out to wireless telecommunications for Timing measurement;
Described Monitoring Data centralized unit, is wirelessly connected with described bus monitoring means, for receive the temperature data measuring from described temperature measurement unit, and is forwarded to described Monitoring Data processing server;
Described Monitoring Data processing server, is connected with described Monitoring Data centralized unit, for receiving the temperature data measuring and being managed, inquire about, store.
2. the temperature monitoring system of all insulation bus according to claim 1, is characterized in that: described N digital temperature sensor adopts Single Wire Bus Technology to be equidistantly connected in series to all insulation bus inside.
3. the temperature monitoring system of all insulation bus according to claim 1, it is characterized in that: described M bus monitoring means also comprises battery module, connect respectively a described N digital temperature sensor and temperature measurement unit, be used to a described N digital temperature sensor and temperature measurement unit centrally connected power supply.
4. the temperature monitoring system of all insulation bus according to claim 1, it is characterized in that: described temperature measurement unit regularly reads the temperature of all insulation bus contact joint every day, if when measured temperature value surpasses predefined threshold value, described temperature measurement unit starts measurement immediately, and the temperature data measuring is communicated to described Monitoring Data centralized unit.
5. the temperature monitoring system of all insulation bus according to claim 1, is characterized in that: Monitoring Data processing server is connected by RS485 communication interface with described Monitoring Data centralized unit.
6. the temperature monitoring system of all insulation bus according to claim 1, is characterized in that: described Monitoring Data centralized unit is also for monitoring of environmental humiture.
7. the temperature monitoring system of all insulation bus according to claim 6, is characterized in that: the ambient temperature and humidity measuring is for the reference as the temperature rise of all insulation bus.
CN201210429052.1A 2012-11-01 2012-11-01 Temperature monitoring system of all-insulated bus Pending CN103674291A (en)

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Cited By (7)

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CN103944261A (en) * 2014-04-11 2014-07-23 江苏润圣电气有限公司 High-voltage bus operation state networked monitoring method and system thereof
CN104504888A (en) * 2014-12-08 2015-04-08 国家电网公司 Full-insulating bus multipoint temperature measuring single conductor communication system
CN105371969A (en) * 2015-12-04 2016-03-02 上海工程技术大学 Track plate temperature remote monitoring system
CN106959653A (en) * 2017-05-22 2017-07-18 东华大学 A kind of bus humiture real-time monitoring system
CN107152977A (en) * 2017-06-21 2017-09-12 合肥远见电力科技有限公司 A kind of intelligent Bus monitoring system detected based on partial node
CN110646104A (en) * 2019-09-16 2020-01-03 无锡江南计算技术研究所 Direct-current power distribution cabinet temperature sensing system for supplying power to high-performance computer room
CN111207845A (en) * 2019-12-03 2020-05-29 贵州电网有限责任公司 Wireless temperature on-line monitoring and early warning system

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944261A (en) * 2014-04-11 2014-07-23 江苏润圣电气有限公司 High-voltage bus operation state networked monitoring method and system thereof
CN103944261B (en) * 2014-04-11 2016-10-05 江苏润圣电气有限公司 The network monitoring method of high voltage bus running status and system thereof
CN104504888A (en) * 2014-12-08 2015-04-08 国家电网公司 Full-insulating bus multipoint temperature measuring single conductor communication system
CN105371969A (en) * 2015-12-04 2016-03-02 上海工程技术大学 Track plate temperature remote monitoring system
CN105371969B (en) * 2015-12-04 2018-02-23 上海工程技术大学 A kind of track plates temperature remote monitoring system
CN106959653A (en) * 2017-05-22 2017-07-18 东华大学 A kind of bus humiture real-time monitoring system
CN107152977A (en) * 2017-06-21 2017-09-12 合肥远见电力科技有限公司 A kind of intelligent Bus monitoring system detected based on partial node
CN110646104A (en) * 2019-09-16 2020-01-03 无锡江南计算技术研究所 Direct-current power distribution cabinet temperature sensing system for supplying power to high-performance computer room
CN111207845A (en) * 2019-12-03 2020-05-29 贵州电网有限责任公司 Wireless temperature on-line monitoring and early warning system

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Application publication date: 20140326