CN104391161A - Electronic voltage transducer - Google Patents
Electronic voltage transducer Download PDFInfo
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- CN104391161A CN104391161A CN201410670880.3A CN201410670880A CN104391161A CN 104391161 A CN104391161 A CN 104391161A CN 201410670880 A CN201410670880 A CN 201410670880A CN 104391161 A CN104391161 A CN 104391161A
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- double
- electronic voltage
- voltage transducer
- transducer according
- flexible pcb
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Abstract
The invention discloses an electronic voltage transducer which comprises a high-voltage current-conducting rod, an insulator, a cylinder, a double-sided flexible circuit board and a precision resistor. Solid insulating materials sleeve the high-voltage current-conducting rod, the high-voltage current-conducting rod and the solid insulating materials form a double-cylinder structure, the double-sided flexible circuit board is attached outside the double-cylinder structure, and the bottom layer of the flexible circuit board is grounded by the precision resistor. The electronic voltage transducer is simple in structure, suitable for industrial mass production and particularly suitable for an electric power system with a severe electromagnetic environment, a signal conditioning circuit can be placed inside the transducer by the double-sided flexible circuit board, the signal to noise ratio of the transducer can be increased, the precision resistor is directly welded on the double-sided flexible circuit board, lead errors can be effectively decreased, the signal to noise ratio of the system is increased, and measuring precision is improved.
Description
Technical field
The present invention relates to a kind of voltage sensor, particularly relate to a kind of electronic voltage transducer.
Background technology
Voltage transformer (VT) is the visual plant carrying out voltage measurement in electric system and obtain relay protection signal, and security and the economical operation of its precision and reliability and electric system are closely related.For a long time, traditional induction voltage transformer (VT) dominate always in relay protection and voltage measurement.But it is low that induction voltage transformer (VT) has measuring accuracy, volume is large, and cost is high, and insulation system is complicated, easily occurs the shortcomings such as ferroresonance.And electronic mutual inductor to have measuring accuracy high, bandwidth, dynamic range is large, compact conformation, and antijamming capability is strong, is convenient to and computer interface, meets Automation of Electric Systems and digitizing requirement, be particularly suitable for the advantages such as digital transformer substation needs.
As the sensor of electronic type voltage transformer core, obtain the difference of aspect according to it, optical crystal type, electric resistance partial pressure type and capacitance partial pressure type can be divided into.Optical crystal type sensor is subject to the impact of environment temperature, therefore its structure and signal processing circuit more complicated; Electric resistance partial pressure type sensor adopts two resistance to carry out dividing potential drop to a sub-high pressure, obtains secondary low-voltage, and therefore its high-voltage arm side needs the resistance that a resistance is very high, and the high resistance error of resistance also very large, affect its measuring accuracy; For capacitance partial pressure type sensor, traditional method be adopt power capacitor dividing potential drop or with gas as insulating material, therefore its complex structure, volume is large, use and operation expense high.
Summary of the invention
The defects such as technical matters to be solved by this invention is how to overcome existing electronic voltage transducer complex structure, volume is large, use and operation expense is high.
In order to solve the problems of the technologies described above, the invention provides a kind of electronic voltage transducer, comprise high-pressure conductive rod, insulator, cylinder, double-sided flex circuit plate and precision resistance, described high-pressure conductive rod outer cover is provided with solid insulating material, described high-pressure conductive rod and solid insulating material form two cylindrical structure, described cylindrical structure outside attaches double-sided flex circuit plate, and described flexible PCB bottom is by precision resistance ground connection.
Further, described sensor is composed in series by the first tubular capacitor and the second tubular capacitor, the electric capacity of described first tubular capacitor is made up of inner cylinder, the outside surface of described high-pressure conductive rod is as a pole plate, bottom and the top layer of described double-sided flex circuit plate all have copper film, described copper film is as another pole plate, and described insulating material is as electrolyte.
Further, the electric capacity of described second tubular capacitor is made up of out cylinder, and the described top layer of double-sided flex circuit plate and the copper film of bottom are as two pole plates, and the base material of described flexible PCB is as electrolyte.
Particularly, the base material of described flexible PCB be polyimide, dimethyl silicone polymer, polyethylene terephthalate and poly one or more.
Particularly, the thickness of described flexible PCB is 1 ~ 100mm.
Particularly, described precision resistance is directly welded in flexible PCB.
Further, teflon selected by described insulating material.
Further, described insulator is set in contact rod outside, and described contact rod is arranged on cylinder interior.
Electronic voltage transducer of the present invention, has following beneficial effect: electronic voltage transducer structure of the present invention is simple, is applicable to industrial mass manufacture; Adopt double-sided flex circuit plate signal conditioning circuit can be placed on the inside of sensor, the signal to noise ratio (S/N ratio) of sensor can be improved; Be particularly suitable for using in the severe electric system of electromagnetic environment; Precision resistance is directly welded on double-sided flex circuit plate, can effectively reduce lead-in wire error, add the signal to noise ratio (S/N ratio) of system, improve measuring accuracy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of electronic voltage transducer of the present invention.
In figure: 1-contact rod, 2-insulator, 3-precision resistance, 4-flexible PCB, 5-cylinder.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of electronic voltage transducer, comprise high-pressure conductive rod 1, insulator 2, cylinder 5, double-sided flex circuit plate 4 and precision resistance 3, described high-pressure conductive rod 1 outer cover is provided with solid insulating material, described high-pressure conductive rod 1 and solid insulating material form two cylindrical structure, described cylinder 5 structural outer attaches double-sided flex circuit plate 4, and described flexible PCB 4 bottom is by precision resistance 3 ground connection.
Described sensor is composed in series by the first tubular capacitor and the second tubular capacitor, the electric capacity of described first tubular capacitor is made up of inner cylinder, the outside surface of described high-pressure conductive rod 1 is as a pole plate, bottom and the top layer of described double-sided flex circuit plate 4 all have copper film, described copper film is as another pole plate, and described insulating material is as electrolyte.
The electric capacity of described second tubular capacitor is made up of out cylinder, and the described top layer of double-sided flex circuit plate 4 and the copper film of bottom are as two pole plates, and the base material of described flexible PCB 4 is as electrolyte.
The base material of described flexible PCB 4 be polyimide, dimethyl silicone polymer, polyethylene terephthalate and poly one or more.
The thickness of described flexible PCB 4 is 1 ~ 100mm.
Described precision resistance 3 is directly welded in flexible PCB 4.
Teflon selected by described insulating material.
It is outside that described insulator 2 is set in contact rod 1, and it is inner that described contact rod 1 is arranged on cylinder 5.
Electronic voltage transducer of the present invention, has following beneficial effect: electronic voltage transducer structure of the present invention is simple, is applicable to industrial mass manufacture; Adopt double-sided flex circuit plate signal conditioning circuit can be placed on the inside of sensor, the signal to noise ratio (S/N ratio) of sensor can be improved; Be particularly suitable for using in the severe electric system of electromagnetic environment; Precision resistance is directly welded on double-sided flex circuit plate, can effectively reduce lead-in wire error, add the signal to noise ratio (S/N ratio) of system, improve measuring accuracy.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. an electronic voltage transducer, it is characterized in that, comprise high-pressure conductive rod, insulator, cylinder, double-sided flex circuit plate and precision resistance, described high-pressure conductive rod outer cover is provided with solid insulating material, described high-pressure conductive rod and solid insulating material form two cylindrical structure, described cylindrical structure outside attaches double-sided flex circuit plate, and described flexible PCB bottom is by precision resistance ground connection.
2. electronic voltage transducer according to claim 1, it is characterized in that, described sensor is composed in series by the first tubular capacitor and the second tubular capacitor, the electric capacity of described first tubular capacitor is made up of inner cylinder, the outside surface of described high-pressure conductive rod is as a pole plate, bottom and the top layer of described double-sided flex circuit plate all have copper film, and described copper film is as another pole plate, and described insulating material is as electrolyte.
3. electronic voltage transducer according to claim 2, it is characterized in that, the electric capacity of described second tubular capacitor is made up of out cylinder, and the described top layer of double-sided flex circuit plate and the copper film of bottom are as two pole plates, and the base material of described flexible PCB is as electrolyte.
4. electronic voltage transducer according to claim 3, is characterized in that, the base material of described flexible PCB be polyimide, dimethyl silicone polymer, polyethylene terephthalate and poly one or more.
5. electronic voltage transducer according to claim 4, is characterized in that, the thickness of described flexible PCB is 1 ~ 100mm.
6. electronic voltage transducer according to claim 5, is characterized in that, described precision resistance is directly welded in flexible PCB.
7. electronic voltage transducer according to claim 6, is characterized in that, teflon selected by described insulating material.
8. electronic voltage transducer according to claim 7, is characterized in that, described insulator is set in contact rod outside, and described contact rod is arranged on cylinder interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670880.3A CN104391161A (en) | 2014-11-21 | 2014-11-21 | Electronic voltage transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670880.3A CN104391161A (en) | 2014-11-21 | 2014-11-21 | Electronic voltage transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104391161A true CN104391161A (en) | 2015-03-04 |
Family
ID=52609086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410670880.3A Pending CN104391161A (en) | 2014-11-21 | 2014-11-21 | Electronic voltage transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104391161A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412567A (en) * | 2001-10-15 | 2003-04-23 | 张树华 | Capacitive divided voltage sensor |
| CN1538181A (en) * | 2003-10-24 | 2004-10-20 | 西安西开高压电气股份有限公司 | Combined type electronic current-voltage sensor |
| CN101566640A (en) * | 2009-06-09 | 2009-10-28 | 三峡大学 | Electronic voltage transducer |
| CN201892698U (en) * | 2010-08-23 | 2011-07-06 | 北京恒源利通电力技术有限公司 | Voltage sensor |
| EP2608339A1 (en) * | 2011-12-21 | 2013-06-26 | 3M Innovative Properties Company | Sensored cable for a power network |
-
2014
- 2014-11-21 CN CN201410670880.3A patent/CN104391161A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412567A (en) * | 2001-10-15 | 2003-04-23 | 张树华 | Capacitive divided voltage sensor |
| CN1538181A (en) * | 2003-10-24 | 2004-10-20 | 西安西开高压电气股份有限公司 | Combined type electronic current-voltage sensor |
| CN101566640A (en) * | 2009-06-09 | 2009-10-28 | 三峡大学 | Electronic voltage transducer |
| CN201892698U (en) * | 2010-08-23 | 2011-07-06 | 北京恒源利通电力技术有限公司 | Voltage sensor |
| EP2608339A1 (en) * | 2011-12-21 | 2013-06-26 | 3M Innovative Properties Company | Sensored cable for a power network |
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Application publication date: 20150304 |
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| WD01 | Invention patent application deemed withdrawn after publication |