CN102226973A - Electronic voltage transformer with temperature-measuring device - Google Patents
Electronic voltage transformer with temperature-measuring device Download PDFInfo
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- CN102226973A CN102226973A CN201110058506.4A CN201110058506A CN102226973A CN 102226973 A CN102226973 A CN 102226973A CN 201110058506 A CN201110058506 A CN 201110058506A CN 102226973 A CN102226973 A CN 102226973A
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Abstract
The invention provides an electronic voltage transformer with a temperature-measuring device, relating to electronic voltage transformers. The electronic voltage transformer with the temperature-measuring device is characterized in that the temperature of an electronic voltage transformer can be monitored in real time, the temperature-measuring device is integrated with the electronic voltage transformer into a whole as well as the structure and the functions of the electronic voltage transformer can be maintained. The electronic voltage transformer with the temperature-measuring device comprises the electronic voltage transformer which is internally provided with a temperature sensor; the temperature sensor is integrated with the electronic voltage transformer into a whole; the temperature sensor is provided with an optical temperature-measuring element and a signal transmission fiber; the optical temperature-measuring element is embedded in the electronic voltage transformer; and the signal transmission fiber is arranged in the electronic voltage transformer.
Description
Technical field
The present invention relates to electronic type voltage transformer, especially relate to a kind of electronic type voltage transformer that is used for the band temperature measuring equipment of power transmission and transformation power equipment (as high-tension switch cabinet).
Background technology
The strategic objective of China's " strong intelligent grid " is exactly strongization and intellectuality.Along with going deep into of the strong intelligent grid construction of China, the continuous expansion of transmission of electricity coverage, in a single day big especially electrical network has an accident and can not eliminate rapidly the time, cause probably destroying and uncontrollable chain reaction, cause on a large scale, have a power failure for a long time, the steady politics of society and economic security caused have a strong impact on, this is that the accident of other industry is incomparable.For this reason, press for the power equipment in the huge grid power transmission of scope, facility operation state are carried out comprehensive real-time or on-line monitoring regularly, the good and bad degree that in time, reflects power equipment, facility all sidedly, so that take positive precautionary measures, avoid the generation of power outage, guarantee is provided for the economic construction of country and the people's life.
Instrument transformer carries out electric energy metrical, measurement as electric power system, control, and protection etc. provides the visual plant of voltage, voltage signal, is the electric power system imperative equipment.At present in electric power system extensive use be conventional electromagnetic potential, voltage transformer or capacitance type potential transformer because increasing of system voltage causes the insulation system complexity of instrument transformer, volume to increase, cost also increases.Simultaneously, electromagnetic transformer also exists shortcomings such as magnetic saturation, ferro resonance, dynamic range be little, therefore, adopts traditional instrument transformer and method of measurement to be difficult to satisfy the application development requirement of electric power system, more can't satisfy intellectuality, digitized requirement.Electronic mutual inductor has that volume is little, Electro Magnetic Compatibility good, antijamming capability is strong, the advantage of good insulation preformance.Electronic mutual inductor can directly be exported digital signal and can be directly and measuring equipment, protection equipment and control system interface, can reduce the intermediate link of transfer of data, the raising reliability of data transmission.
Flourish along with intelligent grid will propose bigger demand to the monitoring of power equipment.During power equipment work, the normal heating of each parts should not surpass its maximum permissible temperature, could guarantee safe operation, so temperature also is one of important parameter of weighing the power equipment running status.
The big capacity of power transmission and transformation power equipment, miniaturization development certainly will make temperature become more and more important monitor signal, also become one of important parameter of weighing the power transmission and transforming equipment running status.Instrument transformer, switch etc. are the key equipments of electric power system, resolve the on-line temperature monitoring of instrument transformer, switchgear, can prevent the power equipment overheat accident, improve power supply reliability; China greatly develops intelligent grid simultaneously, also presses for novel temperature sensor and uses on switchgear, satisfies the requirement of switchgear miniaturization.
The online in real time monitoring temperature of high-tension switch cabinet is the important leverage of switch cubicle safety.By to the continuous monitoring of switch in-cabinet temperature, realize the early alert of fault, when breaking down, timely warning is provided and indicates position of failure point, and the detailed Monitoring Data of accident analysis is provided, can guarantee the safe and reliable operation of switch cubicle.Along with switchgear further develop and market to the demand of scaled-down version switch, how the conductor of primary equipment being carried out monitoring temperature is a problem of having to face.Instrument transformer is the conductor device of requisite primary equipment in the switch cubicle, to the temperature continuous monitoring of instrument transformer, is crucial.
The all temps measurement mechanism of using exists a lot of deficiencies at present, as: can not self independently install, must be attached on handcart conductive arm or the bus; Temperature-sensing element is heat-resisting not enough, the temperatures involved when not considering short circuit; Big voltge surge is to the influence of product when not considering short circuit; Do not consider of the influence of its installation back to the power equipment dielectric voltage withstand; Do not consider the stability that product is worked under unusual hot environment; Particularly there is not intelligent functions etc.
Chinese patent CN201508769U discloses a kind of 10kV and 20kV common current voltage combined instrument transformer, main circuit is made up of current coil centre cap, current coil, potential winding and silicon steel sheet, current coil and potential winding is characterized in that on silicon steel sheet: extract the current coil centre cap in the middle of the current coil out.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can monitor the electronic type voltage transformer that electronic type voltage transformer temperature, temperature measuring equipment and electronic type voltage transformer were integrated, kept the band temperature measuring equipment of the structure of electronic type voltage transformer and function in real time.
The present invention includes electronic type voltage transformer, be provided with temperature sensor in the described electronic type voltage transformer, temperature sensor and electronic type voltage transformer are integrated, temperature sensor is provided with optics temperature element and signal transmission fiber, the optics temperature element is embedded in the electronic type voltage transformer, and signal transmission fiber is located in the electronic type voltage transformer.
Described electronic type voltage transformer can be directly commercial or by the prior art self-control, the voltage divider in the electronic type voltage transformer can be resitstance voltage divider or capacitor voltage divider.Described temperature sensor can be directly commercial or by the prior art self-control.
Described optics temperature element is embedded in the electronic type voltage transformer, and preferably the optics temperature element is embedded in the Primary Conductor in the electronic type voltage transformer, and described Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic type voltage transformer preferably
Described signal transmission fiber is located in the electronic type voltage transformer, and preferably signal transmission fiber synthesizes in the insulator of electronic type voltage transformer.
During use, the output of the electronic type voltage transformer of band temperature measuring equipment of the present invention is connected with the input of collector (electronic mutual inductor high potential analog quantity acquiring device), signal transmission fiber in the electronic type voltage transformer of band temperature measuring equipment is connected with the photoelectric conversion module in the collector, the output of collector is connected with the input of combiner (electronic mutual inductor combiner) then, so just can export and demonstrate the temperature monitoring data of the electronic type voltage transformer of band temperature measuring equipment by the output of combiner in real time.
Compared with the prior art, the present invention has following outstanding substantive distinguishing features and significant beneficial effect:
1, because the optics temperature element is embedded in the Primary Conductor of electronic type voltage transformer, the optical fiber of transmission signals is synthesized in the electronic type voltage transformer insulation, temperature sensor and electronic type voltage transformer are integrated like this, the structure and the function that can keep electronic type voltage transformer, do not need to take up space in addition, needn't destroy the switch cubicle structure during application, need not on-the-spot special assembly and adjustment and fixing yet, installation dimension is constant, simple installation.Be applied in the intelligent grid power transmission and transforming equipment, can simplify greatly electronic type voltage transformer equipment in the structure, minimizing system of switch cubicle quantity, improve the reliability of system data transmission.
2, because temperature sensor is enclosed in instrument transformer inside, can prevent the interference to signal such as extraneous filth and light, heat and mechanical deformation; By the fiber optic conduction signal, can solve the High-Voltage Insulation problem well, eliminate the hidden danger that high voltage is scurried into low voltage control system and communication system, can be from the direct picked up signal of low-pressure end.
3, because temperature sensor directly is embedded in the Primary Conductor of electronic type voltage transformer, make the measuring point accurate, it is accurate to measure temperature, and it is accurate to have temperature detection, and discreteness is little, and no temperature upper limit need not the characteristics of temperature-compensating.Has reliability and safe through experimental verification.
4, adopt optic temperature sensor can not be subjected to outside electromagnetic interference, thereby guaranteed the stability of temperature signal; And fiber optic conduction realized intelligent functions and communicated by letter, and satisfies the requirement of safe and reliable on-line temperature monitoring, satisfies the needs that intelligent electrical network is built.Along with the proposition of intelligent grid digital transformer substation notion and the popularization of IEC61850 agreement, optical fiber sensing monitoring technology and instrument transformer are compound in one, with optical fiber is media, perception and transmission voltage and temperature signal, can compatible to IEC 61850 agreements, can realize the voltage of switching devices and temperature information collection, transmit, gather and analysis and visualization interface overview display, possess the state warning function, satisfy the needs at digitlization power transmission and transformation station.
Description of drawings
Fig. 1 is the structure of the embodiment of the invention and uses schematic diagram.
Embodiment
Referring to Fig. 1, the electronic type voltage transformer of band temperature measuring equipment of the present invention is provided with electronic type voltage transformer 1 and temperature sensor.Temperature sensor and electronic type voltage transformer 1 are integrated.Temperature sensor is provided with optics temperature element 21 and signal transmission fiber 22, and optics temperature element 21 is embedded in the Primary Conductor in the electronic type voltage transformer 1, and Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic type voltage transformer.Signal transmission fiber 22 synthesizes in the insulator in electronic type voltage transformer 1.Electronic type voltage transformer 1 can be directly commercial or by the prior art self-control, the voltage divider 11 in the electronic type voltage transformer 1 is resitstance voltage divider (also can be capacitor voltage divider).During use, the electronic type voltage transformer of band temperature measuring equipment is connected with the input of collector P1 (electronic mutual inductor high potential analog quantity acquiring device), wherein, the voltage divider 11 of electronic type voltage transformer 1 is connected with the data buffering module P11 of collector P1, label P2 is the A/D modular converter, signal transmission fiber 22 is connected with photoelectric conversion module P3 among the collector P1, the output of collector P1 is connected with the input of combiner P2 (electronic mutual inductor combiner), label P21 is a photoelectric conversion module, label P22 is dsp chip (signal processor), label P23 is the optical fiber ether interface, by fiber data output, data output meets the IEC61850 agreement.So just can export and demonstrate the temperature monitoring data of the electronic type voltage transformer of band temperature measuring equipment by the output of combiner in real time.
Claims (3)
1. electronic type voltage transformer with temperature measuring equipment, comprise electronic type voltage transformer, it is characterized in that being provided with in the electronic type voltage transformer temperature sensor, temperature sensor and electronic type voltage transformer are integrated, temperature sensor is provided with optics temperature element and signal transmission fiber, the optics temperature element is embedded in the electronic type voltage transformer, and signal transmission fiber is located in the electronic type voltage transformer.
2. a kind of electronic type voltage transformer as claimed in claim 1 with temperature measuring equipment, it is characterized in that described optics temperature element is embedded in the electronic type voltage transformer, be that the optics temperature element is embedded in the Primary Conductor in the electronic type voltage transformer, described Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic type voltage transformer.
3. a kind of electronic type voltage transformer with temperature measuring equipment as claimed in claim 1 is characterized in that described signal transmission fiber is located in the electronic type voltage transformer, is that signal transmission fiber synthesizes in the insulator of electronic type voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058506A CN102226973B (en) | 2011-03-11 | 2011-03-11 | Electronic voltage transformer with temperature-measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058506A CN102226973B (en) | 2011-03-11 | 2011-03-11 | Electronic voltage transformer with temperature-measuring device |
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| Publication Number | Publication Date |
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| CN102226973A true CN102226973A (en) | 2011-10-26 |
| CN102226973B CN102226973B (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110058506A Expired - Fee Related CN102226973B (en) | 2011-03-11 | 2011-03-11 | Electronic voltage transformer with temperature-measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158721A (en) * | 2015-07-21 | 2015-12-16 | 珠海许继电气有限公司 | Voltage transformer temperature online monitoring device and method |
| CN105304295A (en) * | 2015-11-16 | 2016-02-03 | 张磊 | Intelligent inflatable voltage transformer |
| CN105719816A (en) * | 2015-11-16 | 2016-06-29 | 任红霞 | Intelligent inflatable voltage transformer |
| CN106706989A (en) * | 2016-11-30 | 2017-05-24 | 胡妍 | Intelligent intermediate-and-high-voltage mutual inductor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687794A (en) * | 2005-06-13 | 2005-10-26 | 北京航空航天大学 | Optical fibre current transformer and its on line temp measuring method |
| US20100109642A1 (en) * | 2007-04-18 | 2010-05-06 | Kabushiki Kaisha Toshiba | Optical voltage transformer |
| CN201615918U (en) * | 2009-11-24 | 2010-10-27 | 许继集团有限公司 | Pure optical current transformer |
| CN101957395A (en) * | 2010-09-17 | 2011-01-26 | 淄博思科电子技术开发有限公司 | All-fiber current transducer |
| CN201994174U (en) * | 2011-03-11 | 2011-09-28 | 厦门骐航实业有限公司 | Electronic voltage transformer with temperature measuring device |
-
2011
- 2011-03-11 CN CN201110058506A patent/CN102226973B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687794A (en) * | 2005-06-13 | 2005-10-26 | 北京航空航天大学 | Optical fibre current transformer and its on line temp measuring method |
| US20100109642A1 (en) * | 2007-04-18 | 2010-05-06 | Kabushiki Kaisha Toshiba | Optical voltage transformer |
| CN201615918U (en) * | 2009-11-24 | 2010-10-27 | 许继集团有限公司 | Pure optical current transformer |
| CN101957395A (en) * | 2010-09-17 | 2011-01-26 | 淄博思科电子技术开发有限公司 | All-fiber current transducer |
| CN201994174U (en) * | 2011-03-11 | 2011-09-28 | 厦门骐航实业有限公司 | Electronic voltage transformer with temperature measuring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158721A (en) * | 2015-07-21 | 2015-12-16 | 珠海许继电气有限公司 | Voltage transformer temperature online monitoring device and method |
| CN105158721B (en) * | 2015-07-21 | 2018-01-02 | 珠海许继电气有限公司 | A kind of voltage transformer temperature on-line monitoring device and method |
| CN105304295A (en) * | 2015-11-16 | 2016-02-03 | 张磊 | Intelligent inflatable voltage transformer |
| CN105719816A (en) * | 2015-11-16 | 2016-06-29 | 任红霞 | Intelligent inflatable voltage transformer |
| CN106706989A (en) * | 2016-11-30 | 2017-05-24 | 胡妍 | Intelligent intermediate-and-high-voltage mutual inductor |
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| Publication number | Publication date |
|---|---|
| CN102226973B (en) | 2012-09-12 |
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