CN202453413U - Electronic type combined sensor - Google Patents
Electronic type combined sensor Download PDFInfo
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- CN202453413U CN202453413U CN201220084355XU CN201220084355U CN202453413U CN 202453413 U CN202453413 U CN 202453413U CN 201220084355X U CN201220084355X U CN 201220084355XU CN 201220084355 U CN201220084355 U CN 201220084355U CN 202453413 U CN202453413 U CN 202453413U
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- type combination
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Abstract
Disclosed is an electronic type combined sensor. The sensor comprises a straight-through plastic casing, a capacity divider and a current sensor, wherein the outside of the capacity divider is sleeved by the current sensor, the current sensor is a straight-through Rogowski coil arranged in the casing, the capacity divider comprises a plurality of cylindrical metal screens which overlap with each other and are separated mutually, the plurality of cylindrical metal screens and a central insulation cylinder are arranged concentrically and fixed from top to bottom axially to form a cylindrical capacitance shielding layer, the cylindrical capacitance shielding layer is installed outside the central insulation cylinder in a sleeving mode, the section shapes of a plurality of cylindrical metal screens in the cylindrical capacitance shielding layer are distributed symmetrically on two sides along the axial direction in a step mode, an electrode which is led out by the most inner metal screen serves as a high-voltage electrode, and the reciprocal second metal screen lead and the most external metal screen are respectively connected with aviation plugs through leads. The electronic type combined sensor solves the problems that traditional current voltage sensors are in a state of magnetic saturation, narrow in frequency band of measurable signals and likely to cause ferromagnetic resonance.
Description
Technical field
The utility model relates to a kind of electric equipment, relates in particular to a kind of electronic type combination sensor.
Background technology
Transformer station is as the information source and execution terminal of electrical power trans mission/distribution system, and the quantity of information that requirement provides and the integrated control of realization are more and more, therefore; Present transformer station presses for a system brief, intelligence; Realize information sharing,, improve operation, maintenance efficiency to reduce investment.The demand of these operations and management makes intelligent substation become the new direction of development of electric substation automation system.Along with the develop rapidly of Computer Applied Technology and modern electronic technology, intelligent substation is more and more nearer from us.
The primary equipment intellectuality is the inexorable trend of power equipment development; Vacuum switch and isolating switch need be equipped with electric current and voltage sensor in the intelligent substation, so that can realize all or part of functions such as the measurement relevant with host equipment, control, metering, monitoring, protection.The producer of domestic production vacuum switch and isolating switch is a lot of at present; The whole nation is near about families up to ten thousand; Equipped electric current and the voltage sensor of vacuum switch and isolating switch all is the product of traditional electromagnetism sensing principle, and current sensor exists the magnetic saturation problem, and measurable signal band is narrow; Voltage sensor exists the ferroresonance problem, influences the voltage stability of electrical network, the normal use of harm power equipment.
In sum, the equipped conventional current voltage sensor of primary equipment can't satisfy the demand of intelligent substation development.Therefore, the technical scheme of a kind of electronic type combination sensor of current needs structure solves the problems referred to above.
Summary of the invention
The utility model technical matters to be solved provides a kind of electronic type combination sensor; Solve the equipped conventional current voltage sensor of current primary equipment and had magnetic saturation, the narrow problem of measurable signal band, and be prone to the problem of the phenomenon of generation ferroresonance.
In order to address the above problem; A kind of electronic type combination sensor of the utility model; Comprise a punching plastic casing, capacitive divider and be sleeved on the outside current sensor of this capacitive divider; Current sensor is the punching Luo-coil that is wound with Secondary Winding, and this punching Luo-coil is arranged in this punching plastic casing; Said capacitive divider comprises a plurality of tubular metal screens; Said a plurality of tubular metal screen is nestable and mutual isolation each other; Said a plurality of tubular metal screens and central insulation cylinder are the concentric circles setting simultaneously; And the fixing successively from top to bottom vertically tubular electric capacity screen layer of forming, this tubular electric capacity screen layer is sleeved on the outside of central insulation cylinder, and the xsect of a plurality of tubular metal screens is shaped as symmetria bilateralis and stepped distributional pattern vertically in the tubular electric capacity screen layer; The electrode that wherein the most inboard metal screen is drawn is as high-field electrode, and the metal screen of layer second from the bottom lead-in wire and outermost metal screen are respectively through going between to aviation plug.
Further.Above-mentioned electronic type combination sensor can comprise that also said outermost metal screen is that ground connection is provided with.
Further.Above-mentioned electronic type combination sensor also can comprise impedance unit, is connected with said aviation plug.。
Further.Above-mentioned electronic type combination sensor also can comprise regulating circuit, connects said impedance unit, and this regulating circuit comprises integral unit, amplitude regulon, the phase-shifting unit that connects successively and follows the unit.
Further.Above-mentioned electronic type combination sensor can comprise that also said punching Luo-coil is to mix through epoxy resin to be cast in the said punching plastic casing.
Further.Above-mentioned electronic type combination sensor also can comprise, all fills insulating medium with the outside between the central insulation right cylinder of said capacitive divider and the tubular electric capacity screen layer.
Compared with prior art, use the little electronic type combination sensor of high precision, good linearity, volume of the utility model, wherein current sensor adopts Luo-coil to measure electric current, and voltage sensor adopts the coaxial capacitance voltage divider.The electronic type combination sensor volume of the utility model is little, antijamming capability strong and good linearity, has avoided conventional current voltage sensor problem, the problem includes: magnetic saturation problem and ferroresonance phenomenon.
Description of drawings
Fig. 1 is the structural representation of the electronic type combination sensor of the utility model;
Fig. 2 is the structural representation of the electronic current sensor of the utility model;
Fig. 3 is the structural representation of the electronic voltage transducer of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Rogowski coil (Luo-coil) is a kind of new technology that is formed by the ironcore choke development recent years; Because the good linearity precision is high, there be not unshakable in one's determination the existence simultaneously, can magnetic saturation and can not produce ferroresonance; Volume is little; Easy to install and use, being got more and more as critical component for a long time is used for electronic mutual inductors, measures power network current and is used for relay protection.The utility model adopts the punching Luo-coil of unique design through the performance of this good measurement electric current of Luo-coil, can measure electric current easily.Prefabricated punching Luo-coil is cast among the punching plastic casing, and lead-out terminal adopts an aviation plug.
Tradition coaxial capacitance voltage divider is all pressed design, and shelf depreciation is very big, is unfavorable for the long-term safety operation, and what the utility model adopted is a kind of coaxial capacitance voltage divider of all pressing design that has, and the voltage divider volume is little not to have shelf depreciation, safety and reliability.
As shown in Figure 1; The electronic type combination sensor of the utility model; Comprise a punching plastic casing 101, capacitive divider 102 and be sleeved on the outside current sensor 103 of this capacitive divider; Said current sensor 103 is for being wound with the punching Luo-coil of Secondary Winding, and this punching Luo-coil is arranged in this punching plastic casing; Said capacitive divider 102 comprises a plurality of tubular metal screens; Said a plurality of tubular metal screen is nestable and mutual isolation each other; Said a plurality of tubular metal screens and central insulation cylinder are the concentric circles setting simultaneously; And the fixing successively from top to bottom vertically tubular electric capacity screen layer of forming, this tubular electric capacity screen layer is sleeved on the outside of central insulation cylinder, and the xsect of a plurality of tubular metal screens is shaped as symmetria bilateralis and stepped distributional pattern vertically in the tubular electric capacity screen layer; The electrode that wherein the most inboard metal screen is drawn is as high-field electrode, and the metal screen of layer second from the bottom lead-in wire and outermost metal screen are respectively through going between to aviation plug.
Wherein, current sensor is sleeved on outside one side of voltage sensor.
The utility model as current sensor, adopts a kind of punching Luo-coil of unique design through Luo-coil, can measure electric current easily.As shown in Figure 2, prefabricated Luo-coil 201 (Luo-coil is the form of air core coil) is cast among the punching plastic casing 101, lead-out terminal adopts aviation plug 203, and the internal diameter of current sensor will cooperate with the external diameter of voltage sensor.Said punching Luo-coil is to mix through epoxy resin to be cast in the said punching plastic casing.
As shown in Figure 3; The capacitive divider of the utility model comprises high-voltage arm electric capacity, low-voltage arm electric capacity and secondary outlet aviation plug; Be fixed on successively from top to bottom vertically by several each other nestable concentric circles tubular metal screens of isolating each other again and form cylindric electric capacity screen layer in the insulating medium, the most inboard metal screen extraction electrode is as high-field electrode, and outermost metal screen and second from the bottom layer of metal screen go between respectively to aviation plug; Export as signal; This signal is handled through outside converter, makes to export signal amplitude and the requirement of phase angle conformance with standard, satisfies the measurement and the protection demand of power system voltage.All fill insulating medium with the outside between the central insulation right cylinder of said capacitive divider and the tubular electric capacity screen layer.Said outermost metal screen is that ground connection is provided with.Wherein 301 is the insulating material resins of filling usefulness; The 302nd, the high-field electrode bolt; The 303rd, the metal capacitance screen; The 305th, the extension line of outermost metal screen; The 306th, the voltage divider extension line.
Impedance unit (resistance R) is connected with said aviation plug.The output signal of aviation plug can be regulated the size of output signal through resistance R.Output signal through resistance R is handled through regulating circuit; Regulating circuit connects impedance unit; Regulating circuit comprises integral unit, amplitude regulon, the phase-shifting unit that connects successively and follows the unit, signal output supply capability systematic survey and protection after handling through regulating circuit.
It is exactly that the whole field intensity of voltage divider is even through the design of computing machine electric capacity screen that the capacitive divider of the utility model also has the another one advantage, the operation safety and reliability.This voltage divider output signal accuracy is high, and the interference of ambient temperature, humidity or the like is very little to the influence of this voltage divider.
The current sensor of the utility model can use separately, directly is sleeved on the contact arm of isolating switch fixing just passable.Current/voltage uses simultaneously if desired, and it is outside just passable directly to be sleeved on capacitive divider to current sensor.
The utility model provides a kind of electronic type combination sensor that can make up use, also can use separately; The sensor that is used for the isolating switch use is in the majority with current sensor; Combination sensor just accounts for a part seldom, and the electronic type combination sensor of the utility model can flexible combination use.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Anyly be familiar with this technological people in the technical scope that the utility model disclosed, the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (6)
1. electronic type combination sensor; It is characterized in that; Comprise a punching plastic casing, capacitive divider and be sleeved on the outside current sensor of this capacitive divider; Current sensor is the punching Luo-coil that is wound with Secondary Winding, and this punching Luo-coil is arranged in this punching plastic casing; Said capacitive divider comprises a plurality of tubular metal screens; Said a plurality of tubular metal screen is nestable and mutual isolation each other; Said a plurality of tubular metal screens and central insulation cylinder are the concentric circles setting simultaneously; And the fixing successively from top to bottom vertically tubular electric capacity screen layer of forming, this tubular electric capacity screen layer is sleeved on the outside of central insulation cylinder, and the xsect of a plurality of tubular metal screens is shaped as symmetria bilateralis and stepped distributional pattern vertically in the tubular electric capacity screen layer; The electrode that wherein the most inboard metal screen is drawn is as high-field electrode, and the metal screen of layer second from the bottom lead-in wire and outermost metal screen are respectively through going between to aviation plug.
2. electronic type combination sensor as claimed in claim 1 is characterized in that, said outermost metal screen is that ground connection is provided with.
3. electronic type combination sensor as claimed in claim 1 is characterized in that, also comprises impedance unit, is connected with said aviation plug.
4. electronic type combination sensor as claimed in claim 3 is characterized in that, further comprises regulating circuit, connects said impedance unit, and this regulating circuit comprises integral unit, amplitude regulon, the phase-shifting unit that connects successively and follows the unit.
5. electronic type combination sensor as claimed in claim 1 is characterized in that, said punching Luo-coil is to mix through epoxy resin to be cast in the said punching plastic casing.
6. electronic type combination sensor as claimed in claim 1 is characterized in that, all fills insulating medium with the outside between the central insulation right cylinder of said capacitive divider and the tubular electric capacity screen layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220084355XU CN202453413U (en) | 2012-03-07 | 2012-03-07 | Electronic type combined sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220084355XU CN202453413U (en) | 2012-03-07 | 2012-03-07 | Electronic type combined sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453413U true CN202453413U (en) | 2012-09-26 |
Family
ID=46869268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220084355XU Expired - Fee Related CN202453413U (en) | 2012-03-07 | 2012-03-07 | Electronic type combined sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN110622009A (en) * | 2017-05-17 | 2019-12-27 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
-
2012
- 2012-03-07 CN CN201220084355XU patent/CN202453413U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN103018529B (en) * | 2012-12-11 | 2015-06-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN110622009A (en) * | 2017-05-17 | 2019-12-27 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
| CN110622009B (en) * | 2017-05-17 | 2023-04-07 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20160307 |