CN104090141A - Electronic type voltage transformer and zero-sequence electronic type voltage transformer - Google Patents
Electronic type voltage transformer and zero-sequence electronic type voltage transformer Download PDFInfo
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- CN104090141A CN104090141A CN201410314763.3A CN201410314763A CN104090141A CN 104090141 A CN104090141 A CN 104090141A CN 201410314763 A CN201410314763 A CN 201410314763A CN 104090141 A CN104090141 A CN 104090141A
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Abstract
The invention discloses an electronic type voltage transformer. The electronic type voltage transformer comprises a receiving end, a voltage division circuit and an output end. The receiving end is used for receiving a first voltage, and the voltage division voltage is connected with the receiving end and used for receiving the first voltage and conducting voltage division on the first voltage, so that a second voltage is generated. The output end is connected with the voltage division circuit and used for outputting the second voltage. The invention further discloses a zero-sequence electronic type voltage transformer comprising multiple electronic type voltage transformers. According to the electronic type voltage transformer and the zero-sequence electronic type voltage transformer, the problems that in the prior art, products are large in overall size and mass are solved.
Description
Technical field
The present invention relates to the technical field of mutual inductor, relate in particular to a kind of electronic type voltage transformer and zero sequence electronic type voltage transformer.
Background technology
Along with the needs of the universal of electric power digital and electric system upgrading, what electronic mutual inductor was general is applied in various automating power substations and city and country electric network reconstruction.In addition, along with electrical network develops rapidly, 10kV circuit enters customer center, and user is more and more higher to the reliability requirement of safe power supply.For 10kV feeder line overhead transmission line, due to outdoor, to set up, its safe operation is directly subject to the impact of surrounding environment and weather conditions, has the problem that accident rate is high, accident is searched difficulty, safe reliability is poor.
In order to detect the reason of line fault when above-mentioned electric system is broken down, the electromagnetism voltage transformer (VT) of conventionally all can arranging in pairs or groups comes as detection.Yet traditional electrical magnetic voltage transformer (VT) still needs exposure to be arranged on the bar of overhead transmission line, often can be subject to the impact of rugged surroundings, weather, the operation troubles of self increases.And, therefore due to design and the insulating requirements of traditional electromagnetism zero sequential potential transformer, have product design bulky, quality is the problem such as heavily, and often has the phenomenon that product comes off from bar to occur, and construction and installation and operation maintenance totally unfavorable.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of electronic type voltage transformer and zero sequence electronic type voltage transformer, bulky to solve the product design that prior art exists, the problem that quality heavily waits.
For addressing the above problem, the embodiment of the present invention provides a kind of electronic type voltage transformer, comprising: receiving end, bleeder circuit and output terminal.Receiving end is used for receiving the first voltage.Bleeder circuit connects described receiving end, for receiving described the first voltage, and described the first voltage is carried out to dividing potential drop, to produce second voltage.Output terminal connects described bleeder circuit, for exporting described second voltage.
Wherein, described electronic type voltage transformer also comprises: housing, and wherein said bleeder circuit is disposed in described housing, and described receiving end is disposed on described housing with described output terminal and lays respectively at the relative both sides of described housing.
Wherein, described electronic type voltage transformer also comprises: insulation course, is disposed between described housing and described bleeder circuit.
Wherein, the material of described insulation course is resin.
Wherein, described bleeder circuit comprises: the first resistance and the second resistance.The first resistance has first end and the second end, and the first end of described the first resistance connects described receiving end, and the second end of described the first resistance connects described output terminal.The second resistance has first end and the second end, and the first end of described the second resistance connects the second end of described the first resistance, and the second end of described the second resistance connects earth terminal.
The embodiment of the present invention also provides a kind of zero sequence electronic type voltage transformer, comprising: a plurality of electronic type voltage transformers.Described electronic type voltage transformer, comprises respectively: receiving end, bleeder circuit and output terminal.Receiving end is used for receiving the first voltage.Bleeder circuit is used for receiving described the first voltage, and described the first voltage is carried out to dividing potential drop, to produce second voltage.Output terminal is disposed on described housing and connects described bleeder circuit, for exporting described second voltage.Wherein, the described receiving end of described a plurality of electronic type voltage transformers is separated from one another, and the described output terminal of described a plurality of electronic type voltage transformers is connected to each other.
Wherein, described a plurality of electronic type voltage transformers also do not comprise respectively: housing, and wherein said bleeder circuit is disposed in described housing, and described receiving end is disposed on described housing with described output terminal and lays respectively at the relative both sides of described housing.
Wherein, described a plurality of electronic type voltage transformers also comprise respectively: insulation course, is disposed between described housing and described bleeder circuit.
Wherein, the material of described insulation course is resin.
Wherein, described bleeder circuit comprises: the first resistance and the second resistance.The first resistance, has first end and the second end, and the first end of described the first resistance connects described receiving end, and the second end of described the first resistance connects described output terminal.The second resistance, has first end and the second end, and the first end of described the second resistance connects the second end of described the first resistance, and the second end of described the second resistance connects earth terminal.
Wherein, described zero sequence electronic type voltage transformer also comprises: support plate, for carrying described a plurality of electronic type voltage transformer, wherein said a plurality of electronic type voltage transformers are between any two at a distance of a distance.
According to technical scheme of the present invention, by configuration receiving end, bleeder circuit and output terminal, and arrange in pairs or groups housing and insulation course, to form electronic type voltage transformer.In addition, then by configuration a plurality of electronic type voltage transformers on support plate, form zero sequence electronic type voltage transformer.Thus, can make that product has that volume is little, quality is light, the characteristic such as high precision and high stability.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the structured flowchart of the electronic type voltage transformer of the embodiment of the present invention;
Fig. 2 is according to the circuit diagram of the electronic type voltage transformer of the embodiment of the present invention;
Fig. 3 is the product structure figure according to the electronic type voltage transformer of the embodiment of the present invention;
Fig. 4 is according to the structured flowchart of the zero sequence electronic type voltage transformer of the embodiment of the present invention;
Fig. 5 is according to the circuit diagram of the zero sequence electronic type voltage transformer of the embodiment of the present invention;
Fig. 6 is according to the product structure figure of the zero sequence electronic type voltage transformer of the embodiment of the present invention.
Embodiment
Main thought of the present invention is, based on configuration receiving end, bleeder circuit and output terminal, and arrange in pairs or groups housing and insulation course, to form electronic type voltage transformer.In addition, then by configuration a plurality of electronic type voltage transformers on support plate, form zero sequence electronic type voltage transformer.Thus, can make that product has that volume is little, quality is light, the characteristic such as high precision and high stability.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
According to embodiments of the invention, provide a kind of electronic type voltage transformer.
Fig. 1 is according to the structured flowchart of the electronic type voltage transformer of the embodiment of the present invention.Electronic type voltage transformer 100 comprises: receiving end 110, bleeder circuit 120 and output terminal 130.Receiving end 110 is for receiving the first voltage.Wherein, the first voltage is for example the high tension voltage of 10KV.
Bleeder circuit 120 connects receiving end 110, for receiving the first voltage, and the first voltage is carried out to dividing potential drop, to produce second voltage.The magnitude of voltage of the second voltage wherein, producing via bleeder circuit 120 can be less than the magnitude of voltage of the first voltage.Output terminal 130 connects bleeder circuit 120, for exporting second voltage.Wherein, output terminal 130 is for example transfer connector, to be connected with transmission line, described second voltage is exported to outside.
Fig. 2 is according to the circuit diagram of the electronic type voltage transformer of the embodiment of the present invention.Described bleeder circuit 120 further comprises: the first resistance 121 and the second resistance 122.The first resistance 121 has first end and the second end, and the second end that the first end of the first resistance 121 connects receiving end 110, the first resistance 121 connects output terminal 130.
The second resistance 122 has first end and the second end, and the first end of the second resistance 122 connects the second end of the first resistance 121, and the second end of the second resistance 122 connects earth terminal.User can see through the resistance value of adjusting the first resistance 121 and the second resistance 122, to change the magnitude of voltage of second voltage.
In addition, output terminal 130 also further comprises first end 131 and the second end 132.Wherein, the first end 131 of output terminal 130 is connected in the common contact of the second end of the first resistance 121 and the first end of the second resistance 122, and first end 131 is for example as the positive output end of output terminal 130.The second end 132 of output terminal 130 for example connects second end (being earth terminal) of the second resistance 122, and the second end 132 is for example as the negative output terminal of output terminal 130.
Fig. 3 is the product structure figure according to the electronic type voltage transformer of the embodiment of the present invention.Described electronic type voltage transformer 100, except comprising receiving end 110, bleeder circuit 120 and output terminal 130, also comprises housing 310 and insulation course 320.Described bleeder circuit 120 is disposed in described housing 310, and described receiving end 110 is disposed on described housing 310 with described output terminal 130 and lays respectively at the relative both sides of described housing 310.
In addition, insulation course 320 is disposed between housing 310 and bleeder circuit 120, and for isolating housing 310 and bleeder circuit 120, and the material of described insulation course 320 is resin.In addition, output terminal 130 can further comprise output lead, and this output lead is for example high temperature resistant double shield twisted wire.
Specifically, first, after bleeder circuit 120 and receiving end 110 and output terminal 130 are welded reliably.Then, said modules is fixedly mounted among mould, then adopt epoxide resin vacuum cast to form insulation course 310.Afterwards, after mould vacuum pouring, through solidifying later, after form removal and regelate, form housing, to complete electronic type voltage transformer 100.The characteristics such as thus, by above-mentioned configuration relation, the electronic type voltage transformer 100 of the present embodiment has that volume is little, quality is light, high precision and high stability.
According to embodiments of the invention, provide a kind of zero sequence electronic type voltage transformer.
Fig. 4 is the structured flowchart of zero sequence electronic type voltage transformer according to another embodiment of the present invention.Zero sequence electronic type voltage transformer 400 comprises: a plurality of electronic type voltage transformer 410_1,410_2,410_3.For convenience of description, the electronic type voltage transformer of the present embodiment only shows 3, but the invention is not restricted to this, and visual its demand of user is adjusted the quantity of electronic type voltage transformer voluntarily, for example, be more than 2 or 3.
Electronic type voltage transformer 410_1 comprises: receiving end 420_1, bleeder circuit 430_1 and output terminal 440_1.Electronic type voltage transformer 410_2 comprises: receiving end 420_2, bleeder circuit 430_2 and output terminal 440_2.Electronic type voltage transformer 410_3 comprises: receiving end 420_3, bleeder circuit 430_3 and output terminal 440_3.
And receiving end 420_1, the 420_2 of electronic type voltage transformer 410_1,410_2,410_3,410_3 are separated from one another, for receiving different input voltages.In the present embodiment, zero sequence electronic type voltage transformer 400 for example receives the three-phase voltage of high-tension line, and for example 10KV, and receiving end 420_1,420_2,410_3 are respectively used to connect one of three-phase voltage phase.In addition, output terminal 440_1,440_2, the 440_3 of electronic type voltage transformer 410_1,410_2,410_3 are connected to each other.
In addition, the intraware of electronic type voltage transformer 410_1,410_2,410_3 and annexation thereof and function mode, can be with reference to the embodiment of the electronic type voltage transformer 100 of figure 1, therefore do not repeat them here.
Fig. 5 is according to the circuit diagram of the zero sequence electronic type voltage transformer of the embodiment of the present invention.Described bleeder circuit 430_1,430_2,430_3 further comprise respectively: the first resistance 431_1,431_2,431_3 and the second resistance 432_1,432_2,432_3.The first resistance 431_1,431_2,431_3 have respectively first end and the second end, the first end of the first resistance 431_1,431_2,431_3 connects respectively receiving end 420_1,420_2,420_3, and the second end of the first resistance 431_1,431_2,431_3 connects output terminal 440_1,440_2,440_3.
The second resistance 432_1,432_2,432_3 have respectively first end and the second end, the first end of the second resistance 432_1,432_2,432_3 connects the second end of the first resistance 431_1,431_2,431_3, and the second end of the second resistance 432_1,432_2,432_3 connects earth terminal.User can see through the resistance value of adjusting the first resistance 431_1,431_2,431_3 and the second resistance 432_1,432_2,432_3, to change the magnitude of voltage of second voltage.
In addition, output terminal 440_1,440_2,440_3 have respectively first end and the second end, the first end of output terminal 440_1,440_2,440_3 is connected in the common contact of the first end of the second end of the first resistance 431_1,431_2,431_3 and the second resistance 432_1,432_2,432_3, and the first end of output terminal 440_1,440_2,440_3 is for example as the positive output end of output terminal 440_1,440_2,440_3.The second end of output terminal 440_1,440_2,440_3 for example connects the second end (being earth terminal) of the second resistance 432_1,432_2,432_3, and the second end of output terminal 440_1,440_2,440_3 is for example as the negative output terminal of the second end of output terminal 440_1,440_2,440_3.
Fig. 6 is according to the product structure figure of the zero sequence electronic type voltage transformer of the embodiment of the present invention.Described electronic type voltage transformer 410_1,410_2,410_3, except receiving end 420_1, the 420_2,420_3, bleeder circuit 430_1,430_2,430_3 and output terminal 440_1, the 440_2 that comprise separately, 440_3, also comprise housing and insulation course.Bleeder circuit 430_1,430_2,430_3 are disposed at respectively in described housing, and described receiving end 420_1,420_2,420_3 are disposed at respectively on described housing with described output terminal 440_1,440_2,440_3 and lay respectively at the relative both sides of described housing.
In addition, insulation course is disposed at respectively between its corresponding housing and bleeder circuit 430_1,430_2,430_3, and for isolating housing and bleeder circuit 430_1,430_2,430_3, and the material of described insulation course is resin.In addition, output terminal 440_1,440_2,440_3 can further comprise output lead, and this output lead is for example high temperature resistant double shield twisted wire.
And, configuration relation and the production method thereof of receiving end 420_1,420_2,420_3, bleeder circuit 430_1,430_2,430_3 and output terminal 440_1,440_2,440_3, housing and insulation course that electronic type voltage transformer 410_1,410_2,410_3 are included, can be with reference to the explanation of the electronic type voltage transformer 100 of figure 3 embodiment, therefore do not repeat them here.
In addition, zero sequence electronic type voltage transformer 400 also further comprises: support plate 610.Support plate 610 is for carrying electronic type voltage transformer 410_1,410_2,410_3.Wherein, electronic type voltage transformer 410_1,410_2,410_3 are between any two at a distance of a distance, and namely described electronic type voltage transformer does not directly contact each other.The characteristics such as thus, by above-mentioned configuration relation, the zero sequence electronic type voltage transformer 400 of the present embodiment also has that volume is little, quality is light, high precision and high stability.
In sum, according to technical scheme of the present invention, by configuration receiving end, bleeder circuit and output terminal, and arrange in pairs or groups housing and insulation course, to form electronic type voltage transformer.In addition, then by configuration a plurality of electronic type voltage transformers on support plate, form zero sequence electronic type voltage transformer.Thus, can make that product has that volume is little, quality is light, the characteristic such as high precision and high stability.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (11)
1. an electronic type voltage transformer, is characterized in that, comprising:
Receiving end, for receiving the first voltage;
Bleeder circuit, connects described receiving end, for receiving described the first voltage, and described the first voltage is carried out to dividing potential drop, to produce second voltage;
Output terminal, connects described bleeder circuit, for exporting described second voltage.
2. electronic type voltage transformer according to claim 1, is characterized in that, also comprises:
Housing, wherein said bleeder circuit is disposed in described housing, and described receiving end is disposed on described housing with described output terminal and lays respectively at the relative both sides of described housing.
3. electronic type voltage transformer according to claim 2, is characterized in that, also comprises:
Insulation course, is disposed between described housing and described bleeder circuit.
4. electronic type voltage transformer according to claim 3, is characterized in that, the material of described insulation course is resin.
5. electronic type voltage transformer according to claim 1, is characterized in that, described bleeder circuit comprises:
The first resistance, has first end and the second end, and the first end of described the first resistance connects described receiving end, and the second end of described the first resistance connects described output terminal;
The second resistance, has first end and the second end, and the first end of described the second resistance connects the second end of described the first resistance, and the second end of described the second resistance connects earth terminal.
6. a zero sequence electronic type voltage transformer, is characterized in that, comprising:
A plurality of electronic type voltage transformers, comprise respectively:
Receiving end, for receiving the first voltage;
Bleeder circuit, for receiving described the first voltage, and carries out dividing potential drop to described the first voltage, to produce second voltage;
Output terminal, is disposed on described housing and connects described bleeder circuit, for exporting described second voltage;
Wherein, the described receiving end of described a plurality of electronic type voltage transformers is separated from one another, and the described output terminal of described a plurality of electronic type voltage transformers is connected to each other.
7. zero sequence electronic type voltage transformer according to claim 6, is characterized in that, described a plurality of electronic type voltage transformers also comprise respectively:
Housing, wherein said bleeder circuit is disposed in described housing, and described receiving end is disposed on described housing with described output terminal and lays respectively at the relative both sides of described housing.
8. zero sequence electronic type voltage transformer according to claim 7, is characterized in that, described a plurality of electronic type voltage transformers also comprise respectively:
Insulation course, is disposed between described housing and described bleeder circuit.
9. zero sequence electronic type voltage transformer according to claim 8, is characterized in that, the material of described insulation course is resin.
10. zero sequence electronic type voltage transformer according to claim 6, is characterized in that, described bleeder circuit comprises:
The first resistance, has first end and the second end, and the first end of described the first resistance connects described receiving end, and the second end of described the first resistance connects described output terminal;
The second resistance, has first end and the second end, and the first end of described the second resistance connects the second end of described the first resistance, and the second end of described the second resistance connects earth terminal.
11. zero sequence electronic type voltage transformers according to claim 6, is characterized in that, also comprise:
Support plate, for carrying described a plurality of electronic type voltage transformer, wherein said a plurality of electronic type voltage transformers are between any two at a distance of a distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410314763.3A CN104090141A (en) | 2014-07-03 | 2014-07-03 | Electronic type voltage transformer and zero-sequence electronic type voltage transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410314763.3A CN104090141A (en) | 2014-07-03 | 2014-07-03 | Electronic type voltage transformer and zero-sequence electronic type voltage transformer |
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| CN104090141A true CN104090141A (en) | 2014-10-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771463A (en) * | 2016-12-26 | 2017-05-31 | 陈永山 | A kind of three-phase resistive-capacitive voltage divider voltage transformer |
| CN110780221A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994072A (en) * | 1982-11-19 | 1984-05-30 | Mitsubishi Electric Corp | Voltage-dividing trial apparatus |
| CN201514849U (en) * | 2009-08-26 | 2010-06-23 | 安徽翔远电力科技有限公司 | Composite insulation compensation type electronic voltage transformer |
| CN201514851U (en) * | 2009-11-04 | 2010-06-23 | 安徽翔远电力科技有限公司 | Outdoor self-excited source three-phase combined electronic transducer metering device |
| CN102163495A (en) * | 2011-01-26 | 2011-08-24 | 吕强 | Voltage transformer |
| CN202453402U (en) * | 2012-03-07 | 2012-09-26 | 北京瑞奇恩互感器设备有限公司 | Electronic type voltage transformer based on self-excitation source |
| CN203481030U (en) * | 2013-08-02 | 2014-03-12 | 苏刚印 | Multifunctional high-voltage transformer |
-
2014
- 2014-07-03 CN CN201410314763.3A patent/CN104090141A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994072A (en) * | 1982-11-19 | 1984-05-30 | Mitsubishi Electric Corp | Voltage-dividing trial apparatus |
| CN201514849U (en) * | 2009-08-26 | 2010-06-23 | 安徽翔远电力科技有限公司 | Composite insulation compensation type electronic voltage transformer |
| CN201514851U (en) * | 2009-11-04 | 2010-06-23 | 安徽翔远电力科技有限公司 | Outdoor self-excited source three-phase combined electronic transducer metering device |
| CN102163495A (en) * | 2011-01-26 | 2011-08-24 | 吕强 | Voltage transformer |
| CN202453402U (en) * | 2012-03-07 | 2012-09-26 | 北京瑞奇恩互感器设备有限公司 | Electronic type voltage transformer based on self-excitation source |
| CN203481030U (en) * | 2013-08-02 | 2014-03-12 | 苏刚印 | Multifunctional high-voltage transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771463A (en) * | 2016-12-26 | 2017-05-31 | 陈永山 | A kind of three-phase resistive-capacitive voltage divider voltage transformer |
| CN110780221A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
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