CN102221413A - Electronic current voltage combined type mutual inductor with temperature measuring apparatus - Google Patents
Electronic current voltage combined type mutual inductor with temperature measuring apparatus Download PDFInfo
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- CN102221413A CN102221413A CN201110058449XA CN201110058449A CN102221413A CN 102221413 A CN102221413 A CN 102221413A CN 201110058449X A CN201110058449X A CN 201110058449XA CN 201110058449 A CN201110058449 A CN 201110058449A CN 102221413 A CN102221413 A CN 102221413A
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Abstract
Provided is an electronic current voltage combined type mutual inductor with a temperature measuring apparatus and the invention relates to a mutual inductor. The invention provides an electronic current voltage combined type mutual inductor with a temperature measuring apparatus. The electronic current voltage combined type mutual inductor with the temperature measuring apparatus is characterized in that the temperature of the electronic voltage combined type mutual inductor can be monitored in real time; the temperature measuring apparatus is in one body with the mutual inductor and the structure and the functions of the electronic current voltage combined type mutual inductor are maintained. The invention comprises a current voltage combined type mutual inductor. A temperature sensor is provided inside the current voltage combined type mutual inductor. The temperature sensor is in one body with the voltage combined type mutual inductor. The temperature sensor is provided with optics temperature measurement elements and signal transmission fibers. The optics temperature measurement elements are embedded in the electronic current voltage combined type mutual inductor and the signal transmission fibers are provided in the electronic current voltage combined type mutual inductor.
Description
Technical field
The present invention relates to mutual inductor, especially relate to a kind of electronic current voltage combined instrument 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 preventive measure, avoid the generation of power outage, guarantee is provided for the economic construction of country and the people's life.
Mutual inductor carries out electric energy metrical, measurement as electric system, control, and protection etc. provides the visual plant of current/voltage, current and voltage signals, is the electric system imperative equipment.At present in electric system widespread use be conventional electromagnetic type current/voltage, current-voltage transformer or condenser type current-voltage transformer because increasing of system power voltage causes the insulation system complexity of mutual inductor, volume to increase, cost also increases.Simultaneously, electromagnetic transformer also exists shortcomings such as magnetic saturation, ferroresonance, dynamic range be little, therefore, adopts traditional mutual inductor and measuring method to be difficult to satisfy the application development requirement of electric 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 metering outfit, protection equipment and control system interface, can reduce the intermediate link of data transmission, 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 high 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.Mutual inductor, switch etc. are the key equipments of electric system, resolve the on-line temperature monitoring of mutual inductor, 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 warning of fault, when breaking down, timely warning is provided and indicates position of failure point, and the detailed Monitoring Data of fault 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.Mutual inductor is the conductor device of requisite primary equipment in the switch cubicle, to the temperature continuous monitoring of mutual inductor, 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; Large-current electric is pressed the influence of impacting 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 center tap, 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 center tap in the middle of the current coil out.
Summary of the invention
The purpose of this invention is to provide the electronic current voltage combined instrument transformer that a kind of temperature, temperature measuring equipment and the mutual inductor that can monitor electronic current voltage combined instrument transformer in real time was integrated, kept the band temperature measuring equipment of the structure of electronic current voltage combined instrument transformer and function.
The present invention includes the current/voltage combined instrument transformer, be provided with temperature sensor in the described current/voltage combined instrument transformer, temperature sensor and current/voltage combined instrument transformer are integrated, temperature sensor is provided with optics temperature element and signal transmission fiber, the optics temperature element is embedded in the electronic current voltage combined instrument transformer, and signal transmission fiber is located in the electronic current voltage combination transformer.
Described electronic current voltage combined instrument transformer can be directly commercial or by the prior art self-control, coil in the electronic current voltage combined instrument transformer can be low-power coil or Luo-coil, and the voltage divider in the electronic current voltage combined instrument transformer can be resitstance voltage divider or capacitive divider.
Described temperature sensor can be directly commercial or by the prior art self-control.
Described optics temperature element is embedded in the electronic current voltage combined instrument transformer, preferably the optics temperature element is embedded in the Primary Conductor in the electronic current voltage combined instrument transformer, and described Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic current voltage combined instrument transformer preferably.
Described signal transmission fiber is located in the electronic current voltage combined instrument transformer, and preferably signal transmission fiber synthesizes in the insulator of electronic current voltage combined instrument transformer.
During use, the output terminal of the electronic current voltage combined instrument transformer of band temperature measuring equipment of the present invention is connected with the input end of collector (electronic mutual inductor noble potential analog quantity acquiring device), signal transmission fiber in the electronic current voltage combined instrument transformer of band temperature measuring equipment is connected with the photoelectric conversion module in the collector, the output terminal of collector is connected with the input end of combiner (electronic mutual inductor combiner) then, so just can export and demonstrate the temperature monitoring data of the electronic current voltage combined instrument transformer of band temperature measuring equipment by the output terminal 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 current/voltage combined instrument transformer, the optical fiber of transmission signals is synthesized in the insulator of electronic current voltage combined instrument transformer, temperature sensor and electronic current voltage combined instrument transformer are integrated like this, the structure and the function that can keep electronic current voltage combined instrument transformer, do not need to take up space in addition, needn't destroy the switch cubicle structure during application, also need not on-the-spot special assembly and adjustment and fixing, installation dimension is constant, simple installation.Be applied in the intelligent grid power transmission and transforming equipment, can simplify greatly mutual inductor equipment in the structure, minimizing system of switch cubicle quantity, improve the reliability of system data transmission.
2, because temperature sensor is enclosed in mutual inductor inside, can prevent the interference to signal such as extraneous filth and light, heat and mechanically deform; By the fiber optic conduction signal, can solve the High-Voltage Insulation problem well, eliminate the hidden danger that high current/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 current voltage combined instrument 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 upper temperature limit need not the characteristics of temperature compensation.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 mutual inductor are compound in one, with optical fiber is media, perception and transmission current, voltage and electric current, voltage and temperature signal, can compatible to IEC 61850 agreements, can realize the current/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 digitizing power transmission and transformation station.
Description of drawings
Fig. 1 is the structure of the embodiment of the invention and uses synoptic diagram.
Embodiment
Referring to Fig. 1, the electronic current voltage combined instrument transformer of band temperature measuring equipment of the present invention is provided with electronic current voltage combined instrument transformer 1 and temperature sensor.Temperature sensor and electronic current voltage transformer (VT) 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 current mutual inductor 1, and Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic current voltage combined instrument transformer.Signal transmission fiber 22 synthesizes in the insulator in electronic current voltage combined instrument transformer 1.Electronic current voltage combined instrument 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 capacitive divider).
During use, the electronic current voltage combined instrument transformer of band temperature measuring equipment is connected with the input end of collector P1 (electronic mutual inductor noble potential analog quantity acquiring device), wherein, the voltage divider 11 of electronic current voltage combined instrument 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 terminal of collector P1 is connected with the input end 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 current voltage combined instrument transformer of band temperature measuring equipment by the output terminal of combiner in real time.
Claims (3)
1. electronic current voltage combined instrument transformer with temperature measuring equipment, comprise electronic current voltage combined instrument transformer, it is characterized in that being provided with temperature sensor in the mutual combined type sensor of electronic current voltage, temperature sensor and electronic current voltage combined instrument transformer are integrated, temperature sensor is provided with optics temperature element and signal transmission fiber, the optics temperature element is embedded in the electronic current voltage combined instrument transformer, and signal transmission fiber is located in the electronic current voltage combined instrument transformer.
2. a kind of electronic current voltage combined instrument transformer as claimed in claim 1 with temperature measuring equipment, it is characterized in that described optics temperature element is embedded in the electronic current voltage combined instrument transformer, be that the optics temperature element is embedded in the Primary Conductor in the electronic current voltage combined instrument transformer, described Primary Conductor is the high-voltage terminal or the leading-out terminal of electronic current voltage combined instrument transformer.
3. a kind of electronic current voltage combined instrument transformer as claimed in claim 1 with temperature measuring equipment, it is characterized in that described signal transmission fiber is located in the electronic current voltage combined instrument transformer, is that signal transmission fiber synthesizes in the insulator of electronic current voltage combined instrument transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058449.XA CN102221413B (en) | 2011-03-11 | 2011-03-11 | Electronic current voltage combined type mutual inductor with temperature measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058449.XA CN102221413B (en) | 2011-03-11 | 2011-03-11 | Electronic current voltage combined type mutual inductor with temperature measuring apparatus |
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| CN102221413A true CN102221413A (en) | 2011-10-19 |
| CN102221413B CN102221413B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110058449.XA Expired - Fee Related CN102221413B (en) | 2011-03-11 | 2011-03-11 | Electronic current voltage combined type mutual inductor with temperature measuring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101274A1 (en) * | 2012-12-28 | 2014-07-03 | 辽宁省电力有限公司 | Data acquisition device detection and evaluation system |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
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| JP2001013170A (en) * | 1999-07-01 | 2001-01-19 | Toshiba Corp | Transformer for meter |
| CN1645711A (en) * | 2005-01-05 | 2005-07-27 | 沈阳理工大学 | Intelligent power monitoring system |
| 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 |
| CN1929054A (en) * | 2005-09-08 | 2007-03-14 | 郭志忠 | Active optics current transformer and its method |
| US20070171958A1 (en) * | 2006-01-23 | 2007-07-26 | Anh Hoang | Electrical device measurement probes |
| CN101256895A (en) * | 2007-12-29 | 2008-09-03 | 武汉格蓝若光电互感器有限公司 | Novel high voltage combined independent electronic type current, voltage mutual inductor |
| CN101299386A (en) * | 2008-03-04 | 2008-11-05 | 徐伟专 | Wide band high voltage intelligent resistance type voltage current combined sensor |
| CN201615921U (en) * | 2010-04-14 | 2010-10-27 | 李岩松 | Optical current transducer and photoelectric information processor thereof |
| CN202034234U (en) * | 2011-03-11 | 2011-11-09 | 厦门骐航实业有限公司 | Electronic current and voltage combined transformer with temperature measuring device |
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2011
- 2011-03-11 CN CN201110058449.XA patent/CN102221413B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013170A (en) * | 1999-07-01 | 2001-01-19 | Toshiba Corp | Transformer for meter |
| CN1645711A (en) * | 2005-01-05 | 2005-07-27 | 沈阳理工大学 | Intelligent power monitoring system |
| 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 |
| CN1929054A (en) * | 2005-09-08 | 2007-03-14 | 郭志忠 | Active optics current transformer and its method |
| US20070171958A1 (en) * | 2006-01-23 | 2007-07-26 | Anh Hoang | Electrical device measurement probes |
| CN101256895A (en) * | 2007-12-29 | 2008-09-03 | 武汉格蓝若光电互感器有限公司 | Novel high voltage combined independent electronic type current, voltage mutual inductor |
| CN101299386A (en) * | 2008-03-04 | 2008-11-05 | 徐伟专 | Wide band high voltage intelligent resistance type voltage current combined sensor |
| CN201615921U (en) * | 2010-04-14 | 2010-10-27 | 李岩松 | Optical current transducer and photoelectric information processor thereof |
| CN202034234U (en) * | 2011-03-11 | 2011-11-09 | 厦门骐航实业有限公司 | Electronic current and voltage combined transformer with temperature measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101274A1 (en) * | 2012-12-28 | 2014-07-03 | 辽宁省电力有限公司 | Data acquisition device detection and evaluation system |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
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| Publication number | Publication date |
|---|---|
| CN102221413B (en) | 2013-03-27 |
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Owner name: FUJIAN QIHANG INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: XIAMEN QIHANG INDUSTRY CO., LTD. Effective date: 20120203 |
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Effective date of registration: 20120203 Address after: Xingtai Industrial Park Economic Development Zone, Changtai County, Fujian city of Zhangzhou province 363900 Applicant after: FUJIAN QIHANG INDUSTRY CO., LTD. Address before: 361023, No. 1, No. 101, lotus road, Jimei District, Fujian, Xiamen Applicant before: Xiamen Qihang Industrial Co.,Ltd. |
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