CN104515895A - Electronic transformer combined with handcart circuit breaker - Google Patents
Electronic transformer combined with handcart circuit breaker Download PDFInfo
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- CN104515895A CN104515895A CN201410811992.6A CN201410811992A CN104515895A CN 104515895 A CN104515895 A CN 104515895A CN 201410811992 A CN201410811992 A CN 201410811992A CN 104515895 A CN104515895 A CN 104515895A
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- signal
- circuit breaker
- handcart circuit
- mutual inductor
- handcart
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Abstract
The invention provides an electronic transformer combined with a handcart circuit breaker. The electronic transformer comprises a voltage sensor, a current sensor, an insulating sleeve ring, a signal switching box and a merging unit, wherein the voltage sensor and the current sensor are positioned in the insulating sleeve ring; the voltage sensor and the current sensor respectively transmits an acquired analog voltage signal and an acquired analog current signal to the signal switching box through signals cables; the analog voltage signal and the analog current signal are forwarded to the merging unit through the signal switching box; the merging unit converts the analog voltage signal and the analog current signal into digital signals, and transmits the digital signals to secondary equipment for use. According to the electronic transformer, the shape structure and the process specification of independent-type mounting of the transformer are changed, and the electronic transformer becomes a component of a handcart and is combined and assembled with the handcart circuit breaker. Therefore, the purposes of compressing assembling space, reducing the manufacturing cost, facilitating plug-pull-type offline maintenance, and realizing the measurement and control intelligence of a switch cabinet are achieved.
Description
Technical field
The present invention relates to a kind of mutual inductor, be specifically related to a kind of electronic mutual inductor combined with handcart circuit breaker.
Background technology
In agriculture, distribution power station, middle-low voltage switch cabinet usual adapted conventional electromagnetic mutual inductor, and conventional electromagnetic mutual inductor needs at substantial silicon steel and copper wire material, the hardware cost of manufacture is high, due to magnetic hysteresis and magnetic saturation phenomenon, measurement range is caused to be restricted, and due to volume and weight large, need during assembling independently to take space in cabinet, force cabinet volume to increase, mutual inductor is fixed on busbar, is not easy to safeguard and maintenance.In recent years, domestic beginning promoted the use of new-style electronic mutual inductor, and this new technology has the potential reducing volume and weight, reduce manufacturing cost, be convenient to assemble maintenance, particularly realizes Digital output, network and wiring, realizes the intellectuality of switch cubicle.
Summary of the invention
In order to the technical advantage of the micropower sensing of electronic type, Digital output and networking wiring being converted into small-scale structure, convenient assembling and maintenance, product advantage cheap for manufacturing cost, need to create new contour structures and assembly technology specification, the invention provides a kind of electronic mutual inductor combined with handcart circuit breaker, mutual inductor for 10kV middle-placed switch cabinet is applied, change contour structures and the technological specification of the installation of mutual inductor stand alone type, make electronic mutual inductor variable body be an assembly of handcart, carry out combination with handcart circuit breaker and assemble.Thus reach compression assembly space, reduce manufacturing cost, be convenient to plug-in maintenance off-line, to realize the observing and controlling of switch cubicle intelligent.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of electronic mutual inductor combined with handcart circuit breaker, it is inner that described handcart circuit breaker is positioned at 10kV handcart switch cabinet; Mutual inductor comprises voltage sensor, current sensor, the insulation collar, Signal transfer box and merge cells; Described voltage sensor and current sensor are arranged in the insulation collar, the analog voltage signal of collection and analog current signal are passed to Signal transfer box by signal cable by described voltage sensor and current sensor respectively, analog voltage signal and analog current signal are transmitted to merge cells through Signal transfer box, by merge cells, analog voltage signal and analog current signal are converted to digital signal, and send secondary device use to.
Described current sensor comprises cell winding, and this cell winding is formed by enameled wire even coiling in insulation framework.
Described cell winding is made up of two Luo-coils, is respectively used to metering and the protection of electric current, is all fixed in the insulation collar, and is sleeved on handcart circuit breaker contact arm.
Install resitstance voltage divider in the described insulation collar, a termination high-pressure conductor of resistance string in described resitstance voltage divider, other end ground connection, earth terminal exports voltage division signal, is fixed in the insulation collar, coating-forming voltage sensor by epoxy resin by resitstance voltage divider embedding.
The rated operational voltage of described resistance string is
rated operational current is 0.5mA, and specified intrinsic standoff ratio is
0.005, resistance string dividing point extension line and end ground wire output to merge cells by the telecommunication cable on base support.
The axial length of the described insulation collar is not more than 36mm, and external diameter is not more than 195mm.
The described insulation collar is arranged on handcart circuit breaker contact arm, and the telecommunication cable between Signal transfer box and merge cells is inserted on the signal input interface of merge cells, by merge cells to secondary device output digit signals.
Described merge cells is installed in switch cabinet instrument room, and described Signal transfer box is fixed on the panel of handcart circuit breaker.
Connected by signal cable between described Signal transfer box and high-pressure conductor.
Compared with prior art, beneficial effect of the present invention is:
The present invention can make current sensor and voltage sensor be combined as a structure, and the volume of mutual inductor is compressed to be equivalent to 1/8 of traditional mutual inductor, be assemblied on the contact arm of isolating switch as a compact package, no longer independently take cabinet installing space, with the Application comparison of traditional mutual inductance, reduce overall manufacturing cost about 1/3.Acquisition Circuit and combiner combined integrated, be installed on instrument department, because microelectronic circuit is away from Primary Conductor, electromagnetic interference capability during anti-switching manipulation can be improved; Exporting by merging, information sharing level on the spot can be obtained, overcome the defect of anti-electromagnetic interference capability difference existed in the stand alone type application of electronic mutual inductor in early stage, for the miniaturization of switch cubicle entirety and intellectuality provide possibility.
Accompanying drawing explanation
Fig. 1 is the electronic mutual inductor schematic diagram combined with handcart circuit breaker in the embodiment of the present invention;
Fig. 2 is the electronic mutual inductor structural drawing combined with handcart circuit breaker in the embodiment of the present invention;
Fig. 3 is that the electronic mutual inductor combined with handcart circuit breaker in the embodiment of the present invention assembles effect schematic diagram;
Fig. 4 is that the electronic mutual inductor combined with handcart circuit breaker in the embodiment of the present invention is connected block diagram;
In figure, 1-high-pressure conductor, 2-resitstance voltage divider, 3-Luo-coil, 4-telecommunication cable, 5-handcart circuit breaker contact arm, 6-electronic mutual inductor, 7-Signal transfer box, 8-merge cells.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The invention provides a kind of electronic mutual inductor combined with handcart circuit breaker, it is inner that described handcart circuit breaker is positioned at 10kV handcart switch cabinet; Mutual inductor comprises voltage sensor, current sensor, the insulation collar, Signal transfer box 7 and merge cells 8; Described voltage sensor and current sensor are arranged in the insulation collar, the analog voltage signal of collection and analog current signal are passed to Signal transfer box 7 by signal cable by described voltage sensor and current sensor respectively, analog voltage signal and analog current signal are transmitted to merge cells 8 through Signal transfer box 7, by merge cells 8, analog voltage signal and analog current signal are converted to digital signal, and send secondary device use to.
Described current sensor comprises cell winding, and this cell winding is formed by 0.35mm enameled wire even coiling 2000 circle in insulation framework.
Described cell winding is made up of two Luo-coils 3, is respectively used to metering and the protection of electric current, is all fixed in the insulation collar, and is sleeved on handcart circuit breaker contact arm 5.
The resitstance voltage divider 2 of involute helical distribution is installed in the described insulation collar, described resitstance voltage divider 2 is made up of 13 resistant series, be welded on prefabricated pcb board, wherein 12 resistance are as high-pressure side resistance R1, one termination high-pressure conductor 1 of resistance string, other end ground connection, earth terminal exports voltage division signal, by epoxy resin by resitstance voltage divider 2 embedding and be fixed on insulation the collar in, coating-forming voltage sensor.Epoxy resin plays insulation between the filling of internal voids and element, fixing, and the shell that encapsulation is formed plays high pressure insulation buffer action over the ground.
The rated operational voltage of described resistance string is
rated operational current is 0.5mA, and specified intrinsic standoff ratio is
0.005, resistance string dividing point extension line and end ground wire output to merge cells 8 by the telecommunication cable 4 on base support.
The axial length of the described insulation collar is 36mm, and external diameter is 195mm.
The described insulation collar is arranged on handcart circuit breaker contact arm 5, and the telecommunication cable 4 between Signal transfer box 7 and merge cells 8 is inserted on the signal input interface of merge cells 8, by merge cells 8 to secondary device output digit signals.
Described merge cells 8 is installed in switch cabinet instrument room, and described Signal transfer box 7 is fixed on the panel of handcart circuit breaker.
Connected by signal cable between described Signal transfer box 7 and high-pressure conductor 1.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (9)
1. the electronic mutual inductor combined with handcart circuit breaker, it is inner that described handcart circuit breaker is positioned at 10kV handcart switch cabinet; It is characterized in that: described mutual inductor comprises voltage sensor, current sensor, the insulation collar, Signal transfer box and merge cells; Described voltage sensor and current sensor are arranged in the insulation collar, the analog voltage signal of collection and analog current signal are passed to Signal transfer box by signal cable by described voltage sensor and current sensor respectively, analog voltage signal and analog current signal are transmitted to merge cells through Signal transfer box, by merge cells, analog voltage signal and analog current signal are converted to digital signal, and send secondary device use to.
2. the electronic mutual inductor combined with handcart circuit breaker according to claim 1, is characterized in that: described current sensor comprises cell winding, and this cell winding is formed by enameled wire even coiling in insulation framework.
3. the electronic mutual inductor combined with handcart circuit breaker according to claim 2; it is characterized in that: described cell winding is made up of two Luo-coils; be respectively used to metering and the protection of electric current, be all fixed in the insulation collar, and be sleeved on handcart circuit breaker contact arm.
4. the electronic mutual inductor combined with handcart circuit breaker according to claim 1, it is characterized in that: in the described insulation collar, resitstance voltage divider is installed, a termination high-pressure conductor of resistance string in described resitstance voltage divider, other end ground connection, earth terminal exports voltage division signal, by epoxy resin by resitstance voltage divider embedding and be fixed on insulation the collar in, coating-forming voltage sensor.
5. the electronic mutual inductor combined with handcart circuit breaker according to claim 4, is characterized in that: the rated operational voltage of described resistance string is
rated operational current is 0.5mA, and specified intrinsic standoff ratio is
resistance string dividing point extension line and end ground wire output to merge cells by the telecommunication cable on base support.
6. the electronic mutual inductor combined with handcart circuit breaker according to claim 1 or 4, is characterized in that: the axial length of the described insulation collar is not more than 36mm, and external diameter is not more than 195mm.
7. the electronic mutual inductor combined with handcart circuit breaker according to claim 1, it is characterized in that: the described insulation collar is arranged on handcart circuit breaker contact arm, telecommunication cable between Signal transfer box and merge cells is inserted on the signal input interface of merge cells, by merge cells to secondary device output digit signals.
8. the electronic mutual inductor combined with handcart circuit breaker according to claim 1 or 7, is characterized in that: described merge cells is installed in switch cabinet instrument room, and described Signal transfer box is fixed on the panel of handcart circuit breaker.
9. the electronic mutual inductor combined with handcart circuit breaker according to claim 1, be is characterized in that: connected by signal cable between described Signal transfer box and high-pressure conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811992.6A CN104515895A (en) | 2014-12-23 | 2014-12-23 | Electronic transformer combined with handcart circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811992.6A CN104515895A (en) | 2014-12-23 | 2014-12-23 | Electronic transformer combined with handcart circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104515895A true CN104515895A (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410811992.6A Pending CN104515895A (en) | 2014-12-23 | 2014-12-23 | Electronic transformer combined with handcart circuit breaker |
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| Country | Link |
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| CN (1) | CN104515895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100643A (en) * | 2018-07-03 | 2018-12-28 | 日升集团有限公司 | A kind of intelligence electrical measurement component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411550Y (en) * | 1999-12-15 | 2000-12-20 | 广州市越秀区增强绝缘电器厂 | Voltage transformer for metering handcart |
| CN203660383U (en) * | 2013-12-26 | 2014-06-18 | 北京科锐配电自动化股份有限公司 | Intelligent handcart circuit breaker with electronic transformer |
| CN203895346U (en) * | 2014-04-15 | 2014-10-22 | 北京益茂佳运电气有限公司 | Intelligent medium voltage breaker |
| CN204302355U (en) * | 2014-12-23 | 2015-04-29 | 国家电网公司 | A kind of electronic mutual inductor combined with handcart circuit breaker |
-
2014
- 2014-12-23 CN CN201410811992.6A patent/CN104515895A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411550Y (en) * | 1999-12-15 | 2000-12-20 | 广州市越秀区增强绝缘电器厂 | Voltage transformer for metering handcart |
| CN203660383U (en) * | 2013-12-26 | 2014-06-18 | 北京科锐配电自动化股份有限公司 | Intelligent handcart circuit breaker with electronic transformer |
| CN203895346U (en) * | 2014-04-15 | 2014-10-22 | 北京益茂佳运电气有限公司 | Intelligent medium voltage breaker |
| CN204302355U (en) * | 2014-12-23 | 2015-04-29 | 国家电网公司 | A kind of electronic mutual inductor combined with handcart circuit breaker |
Non-Patent Citations (3)
| Title |
|---|
| 张志干 等: "VS1(Ⅰ)智能型断路器在配电设备中的应用", 《电气时代》 * |
| 戴俊 等: "DQV中压智能断路器研发设计", 《中国科技信息》 * |
| 蔡平 等: "浅谈中压智能开关设备开发设计", 《电器工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100643A (en) * | 2018-07-03 | 2018-12-28 | 日升集团有限公司 | A kind of intelligence electrical measurement component |
| CN109100643B (en) * | 2018-07-03 | 2020-06-23 | 日升集团有限公司 | Intelligent electrical measurement assembly |
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Application publication date: 20150415 |