CN206945799U - Voltage sensor based on high voltage floating potential - Google Patents
Voltage sensor based on high voltage floating potential Download PDFInfo
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- CN206945799U CN206945799U CN201720645355.5U CN201720645355U CN206945799U CN 206945799 U CN206945799 U CN 206945799U CN 201720645355 U CN201720645355 U CN 201720645355U CN 206945799 U CN206945799 U CN 206945799U
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- voltage
- sheet metal
- floating potential
- high voltage
- ground plane
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Abstract
The utility model provides a kind of voltage sensor based on high voltage floating potential, including insulating medium layer, external shield ground plane, sheet metal and voltage sampler, the insulating medium layer are arranged between electrical equipment high-pressure side and external shield ground plane；Opening is provided with the external shield ground plane, sheet metal one end is arranged on insulating medium layer through opening, and conductive adhesive layer is set between the sheet metal and insulating medium layer；The sheet metal other end series voltage sampler, the voltage sampler are connected through shielding line with secondary device.The utility model solves the problems, such as that installation, O＆M are cumbersome in the prior art, small volume, stable, conveniently installation.
Description
Technical field
The utility model belongs to sensor field, more particularly to a kind of voltage sensor based on high voltage floating potential.
Background technology
Transformer is the equipment of scaling transformation voltage or electric current.The function of transformer be by high voltage or high current by than
Example is transformed into normal low voltage or standard small electric current, to realize measuring instrumentss, protection equipment and the standard of automatic control equipment
Change, miniaturization.Transformer may further be used to separate high-voltage system, to ensure the safety of the person and equipment.More than 10kV electric power
System carries out voltage measurement, metering or relay protection, generally requires the electromagnetic potential transformer based on electromagnetic induction principle, with
The continuous improvement of voltage class, its high-voltage isulation horizontal processing difficulty increases, and measure is more complicated, transformer volume, weight
And cost hold geometry multiple increase, and install, operation, maintenance work it is also further cumbersome.
Utility model content
In view of this, the utility model provides a kind of voltage sensor based on high voltage floating potential, solves existing
Installation, the problem of O＆M is cumbersome in technology, small volume, stable, convenient installation.
The utility model uses following technical scheme：
A kind of voltage sensor based on high voltage floating potential, wherein, including insulating medium layer, external shield ground plane,
Sheet metal and voltage sampler, the insulating medium layer are arranged between electrical equipment high-pressure side and external shield ground plane；It is described
Opening is provided with external shield ground plane, sheet metal one end is arranged on insulating medium layer through opening, the sheet metal and insulation
Conductive adhesive layer is set between dielectric layer；The sheet metal other end series voltage sampler, the voltage sampler is through shielding line
It is connected with secondary device.
Preferably, it is provided for shielding the metal shell of external disturbance on the external shield ground plane, the opening is located at
In metal shell.
Preferably, the sheet metal, resistor, voltage sampler are arranged in metal shell.
Preferably, providing holes on the metal shell, shielding line pass through hole from metal shell, connect with secondary device
Connect.
Preferably, the sheet metal is magnetic conductive metal piece.
Preferably, the secondary device includes voltmeter, electrification display and relay protector.
The beneficial effects of the utility model are as follows：
The utility model is not destroying, is not changing high-voltage electrical equipment insulation and overall structure, and does not influence high pressure one
On the premise of the electric parameter performance of secondary device, the on-line checking of middle high-pressure power system voltage is realized.The two of shielding line connection
Secondary device includes voltmeter, electrification display, relay protector etc., by sensor of the present utility model can with voltage measurement,
Powered display and relay protection, and can observe, record circuit power supply wave shape.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is realized and obtained in the specification, claims and accompanying drawing write.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, the present embodiment provides a kind of voltage sensor based on high voltage floating potential, including dielectric
Layer 3, external shield ground plane 2, sheet metal 4 and voltage sampler 5, insulating medium layer 3 be arranged on electrical equipment high-pressure side 1 with electrically
Between the external shield ground plane 2 of equipment.Opening is provided with external shield ground plane 2, the one end of sheet metal 4 is arranged on insulation through opening
On dielectric layer 3, conductive adhesive layer is set between sheet metal 4 and insulating medium layer 3；The other end series voltage sampler 5 of sheet metal 4,
Voltage sampler 5 is connected through shielding line 7 with secondary device 8.Secondary device 8 includes voltmeter, electrification display and relay protection
Device.Sheet metal 4 is magnetic conductive metal piece.
It is provided for shielding the metal shell 6 of external disturbance on external shield ground plane 2, opening is in metal shell 6, gold
The opening of external shield ground plane 2 is enclosed in metal shell 6 by category shell 6 just.For shielding disturb, sheet metal 4, resistor,
Voltage sampler 5 is arranged in metal shell 6.Providing holes on metal shell 6, shielding line 7 are worn through hole from metal shell 6
Go out, be connected with secondary device 8.When carrying high-voltage potential on electrical equipment high-pressure side 1, stored charge can be produced on sheet metal 4,
Potential difference is produced with ground potential, the magnitude of voltage of this potential difference can be calibrated by the resistor of series connection, via capacitor, inductor
After the voltage sampler 5 of composition is handled, it is sent to by shielding line 7 on secondary device 8.
The utility model principle is：
The high-voltage electric power system primary equipment such as transformer, breaker, and high voltage power cable is all using certain thickness
Dielectric, realize the insulation of high pressure over the ground.If the electric conductor to suspend in dielectric be present, because Electric Field Distribution becomes
Change, floating potential can be produced on the suspended conductor.The size of this floating potential, held just with the volume of voltage and suspended conductor
Than, inverse ratio is held with insulation thickness, it is relevant with the dielectric coefficient of dielectric.For fixed insulation thickness, suspended by measuring
Current potential intensity, you can obtain power system voltage value.
Between the electrification in high voltage side of electrical equipment and ground potential, i.e. dielectric outer end, non-magnetic sheet metal is installed
Popped one's head in as potentiometer, ensure the good insulation between sheet metal and ground connection.In sheet metal rear end resistors in series or inductor
Or capacitor bank into voltage sampler, by adjusting resistance value, or inductance value or capacitance and relevant matches parameter value is big
It is small, the magnitude of voltage of corresponding requirements numerical value is can obtain, and the phase of adopted voltage signal is adjusted, it is double measurement equipment
Stable signal is provided.Potentiometer is popped one's head in and voltage sampler is arranged in metal shell in the lump, to shield external capacitive, electricity
The interference of magnetic, electric field.The voltage signal taken is sent to voltmeter, electrification display, relay protector etc. specially by shielding line
With secondary device, this voltage signal is converted high side voltage value in proportion, and the temperature drift characteristic of magnitude of voltage can be given
Adjustment.
The utility model is not destroying, is not changing high-voltage electrical equipment insulation and overall structure, and does not influence high pressure one
On the premise of the electric parameter performance of secondary device, the on-line checking of middle high-pressure power system voltage is realized.The two of shielding line connection
Secondary device includes voltmeter, electrification display, relay protector etc., by sensor of the present utility model can with voltage measurement,
Powered display and relay protection, and can observe, record circuit power supply wave shape.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (6)
- A kind of 1. voltage sensor based on high voltage floating potential, it is characterised in that：It is grounded including insulating medium layer, external shield Layer, sheet metal and voltage sampler, the insulating medium layer are arranged between electrical equipment high-pressure side and external shield ground plane；Institute State and opening be provided with external shield ground plane, sheet metal one end is arranged on insulating medium layer through opening, the sheet metal with absolutely Conductive adhesive layer is set between edge dielectric layer；The sheet metal other end series voltage sampler, the voltage sampler is through shielding Line is connected with secondary device.
- 2. the voltage sensor according to claim 1 based on high voltage floating potential, it is characterised in that：The external shield It is provided for shielding the metal shell of external disturbance on ground plane, the opening is in metal shell.
- 3. the voltage sensor according to claim 2 based on high voltage floating potential, it is characterised in that：The metal Piece, resistor, voltage sampler are arranged in metal shell.
- 4. the voltage sensor according to claim 3 based on high voltage floating potential, it is characterised in that：Outside the metal Providing holes on shell, shielding line are passed from metal shell through hole, are connected with secondary device.
- 5. the voltage sensor according to claim 1 based on high voltage floating potential, it is characterised in that：The sheet metal For magnetic conductive metal piece.
- 6. the voltage sensor according to claim 1 based on high voltage floating potential, it is characterised in that：It is described secondary to set It is standby to include voltmeter, electrification display and relay protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645355.5U CN206945799U (en) | 2017-06-05 | 2017-06-05 | Voltage sensor based on high voltage floating potential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645355.5U CN206945799U (en) | 2017-06-05 | 2017-06-05 | Voltage sensor based on high voltage floating potential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945799U true CN206945799U (en) | 2018-01-30 |
Family
ID=61363812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720645355.5U Expired - Fee Related CN206945799U (en) | 2017-06-05 | 2017-06-05 | Voltage sensor based on high voltage floating potential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206945799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN111273070A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Tandem type alternating-current high-voltage bus measuring device and method |
-
2017
- 2017-06-05 CN CN201720645355.5U patent/CN206945799U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN111273070A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Tandem type alternating-current high-voltage bus measuring device and method |
| CN111089999B (en) * | 2020-02-10 | 2021-04-13 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180130 Termination date: 20210605 |