CN206712670U - Energy taking device based on capacitive divider - Google Patents
Energy taking device based on capacitive divider Download PDFInfo
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- CN206712670U CN206712670U CN201720466714.0U CN201720466714U CN206712670U CN 206712670 U CN206712670 U CN 206712670U CN 201720466714 U CN201720466714 U CN 201720466714U CN 206712670 U CN206712670 U CN 206712670U
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Abstract
It the utility model is related to high-tension distributing line power taking technology field, it is a kind of energy taking device based on capacitive divider, including high voltage bus, capacitive divider, Transformer Rectifier Unit and power conversion unit, capacitive divider includes taking energy electric capacity and derided capacitors, the input of energy electric capacity is taken to be connected electrically on high voltage bus, the output end of energy electric capacity is taken to be electrically connected with derided capacitors input, the output head grounding of derided capacitors, draw-out power supply lead is electrically connected with the input of energy electric capacity and output end is taken, the input of Transformer Rectifier Unit electrically connects with draw-out power supply output end, the output end of Transformer Rectifier Unit electrically connects with the input of power conversion unit.The utility model obtains electric energy and the direct current by Transformer Rectifier Unit by AC conversion for required voltage class by capacitive divider from high-tension line, and stable DC electricity is converted into by power conversion unit.The characteristics of the utility model has small volume, in light weight, and cost is low, long lifespan, and security is good.
Description
Technical field
High-tension distributing line power taking technology field is the utility model is related to, is that a kind of taking based on capacitive divider can fill
Put.
Background technology
At present, when being monitored on-line to distribution line, the power supply supply of its transmission line of electricity is the key issue that need to be solved
One of.When actually being monitored on-line, various sensors and signal transmitting unit due to gathering signal etc. are all laid in aerial
Near line, setting height(from bottom) and installation site are very limited, thus can not possibly use normal power supplies.It is additionally, since to upper
State power work that sensor and signal transmitting unit etc. are powered in the wild, inconvenient maintenance, thus generally above-mentioned power supply is equal
Need to possess long-term non-maintaining function, then the reliability for mutually tackling power supply proposes very high request.
Existing voltage energy taking device uses direct partial pressure between electric capacity and transformer more, because the inductance value of transformer is
One unstable value, causes output voltage stability and poor reliability；Energy is taken present in prior art from high-tension line
Equipment be easily affected by the external environment.Therefore, develop special power supply of good performance and be applied to distribution line shape
State parameter online system, there is important practical value.
The content of the invention
The utility model provides a kind of energy taking device based on capacitive divider, overcome above-mentioned prior art no
Foot, its can effectively solve it is existing take can equipment taken from transmission line of electricity can when exist voltage output stability difference and outlet line
The problem of current imbalance.
The technical solution of the utility model is realized by following measures：Energy taking device bag based on capacitive divider
High voltage bus, capacitive divider, Transformer Rectifier Unit and power conversion unit are included, the outside of the capacitive divider is provided with insulation
Shell, the capacitive divider include being series between high voltage bus and the earth take can electric capacity and derided capacitors, it is described to take energy
The input of electric capacity is connected electrically on high voltage bus, takes the output end of energy electric capacity to be electrically connected with derided capacitors input, described point
The output head grounding of voltage capacitance, draw-out power supply lead, the change are electrically connected with the input of energy electric capacity and output end is taken
The input of pressure rectification unit electrically connects with draw-out power supply output end, the output end of Transformer Rectifier Unit and power conversion unit
Input electrically connects.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
The above-mentioned output end for taking energy electric capacity can be in series with multiple derided capacitors, and each derided capacitors are sequentially cascaded.
Above-mentioned Transformer Rectifier Unit may include transformer and rectifier bridge, the transformer inputs and draw-out power supply output end
Electrical connection, piezo-resistance, the input and transformation of the rectifier bridge are parallel with draw-out power supply output end and transformer primary side
The output end of device is electrically connected, and the DC capacitor and voltage-stabiliser tube of parallel connection are electrically connected with the output end of the rectifier bridge.
Above-mentioned rectifier bridge may include the commutation diode of four encapsulation, and the positive pole of two of which commutation diode is connected to one
Rise and form positive output end, the negative pole of two other commutation diode is joined together to form negative output terminal.
Above-mentioned power conversion unit may include DC voltage-stabilizing module, the input of the DC voltage-stabilizing module and voltage-stabiliser tube
Output end electrically connects, and the output end of DC voltage-stabilizing module is parallel with filter capacitor.
Above-mentioned DC voltage-stabilizing module can be DC-DC power module；Or/and DC voltage-stabilizing module can be low-dropout regulator.
Above-mentioned capacitive divider is ceramic condenser divider.
The utility model obtains electric energy from high-tension line by capacitive divider and will exchanged by Transformer Rectifier Unit
Electricity is converted into the direct current of required voltage class, and relatively stable direct current is provided after filtering, is converted by power conversion unit
For the stable DC electricity of the voltage class used for insulation sub-control unit；Meanwhile also can fully reduce device volume makes its whole
Body can be built within insulator, reduce cost, lift service life.The utility model has small volume, in light weight, cost
It is low, long lifespan, the features such as security is good, and do not influenceed by factors such as ferromagnetic resonance, line current, environment, after putting into operation
Circuit capacity current will not be caused to occur uneven, the compact insulator for being especially suitable for low-power consumption uses.
Brief description of the drawings
Accompanying drawing 1 is the best embodiment of the utility model circuit diagram.
Accompanying drawing 2 is the mounting structure schematic diagram of the capacitive divider of the best embodiment of the utility model.
Accompanying drawing 3 is the Transformer Rectifier Unit circuit diagram of the best embodiment of the utility model.
Accompanying drawing 4 is the power conversion unit circuit diagram of the best embodiment of the utility model.
Coding in accompanying drawing is respectively：C1 is takes energy electric capacity, and C2 is derided capacitors, and C3 is filter capacitor, and C4 is direct current
Hold, VD1 is voltage-stabiliser tube, and RV1 is piezo-resistance, and Tl is power frequency reducing transformer, and Dl is rectifier bridge.
Embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in accompanying drawing 1,2,3,4, the energy taking device based on capacitive divider includes high voltage bus, capacitive divider, change
Pressure rectification unit and power conversion unit, the outside of the capacitive divider are provided with insulation crust, and the capacitive divider includes
It is series between high voltage bus and the earth and takes energy electric capacity C1 and derided capacitors C2, the input electrical connection for taking energy electric capacity C1
On high voltage bus, energy electric capacity C1 output end is taken to be electrically connected with derided capacitors C2 inputs, the output of the derided capacitors C2
End ground connection, draw-out power supply lead, the Transformer Rectifier Unit are electrically connected with energy electric capacity C1 input and output end is taken
Input electrically connected with draw-out power supply output end, the output end of Transformer Rectifier Unit and the input of power conversion unit are electrically connected
Connect.
Here capacitive divider is as energy taking device, its operation principle：Because electric current is anyway in high voltage bus
Change, its voltage be all stablize it is constant, so set up between high voltage bus and the earth take can after electric capacity C1 and derided capacitors C2,
High voltage electric field between high voltage bus and the earth, which will make wherein to take, to produce enough energy in electric capacity C1 to power.Here
Uac is the output end of draw-out power supply, directly from taking and can obtain electric energy on electric capacity C1.Capacitive divider is as whole energy taking device
Input, be responsible for obtaining energy from high voltage bus by way of partial pressure of connecting, the energy that rear class electrical equipment uses all from
Energy electric capacity C1 is taken to obtain；It is the straight of required voltage class that Transformer Rectifier Unit, which is responsible for the AC conversion that energy electric capacity C1 is obtained is taken,
Stream electricity, provides relatively stable direct current after filtering, be easy to rear class electrical equipment to use；Here Udc is Transformer Rectifier Unit
Output end, power conversion unit is responsible for the relatively stable direct current that Transformer Rectifier Unit treats to be converted to and be suitable for using
The direct current of electric equipment voltage class requirement is simultaneously output to electrical equipment.The supply voltage that the utility model can ensure to obtain is
Steady and lasting voltage.
The above-mentioned energy taking device based on capacitive divider can be made further optimization and/or improvements according to being actually needed：
As shown in accompanying drawing 1,2, the output end for taking energy electric capacity C1 is in series with multiple derided capacitors C2, each derided capacitors
C2 is sequentially cascaded.
Here take energy electric capacity C1, derided capacitors C2 to Cn is cylindric planar high voltage capacitor, i.e., by two circular flats
Row pole plate and the set of dielectrics that is filled between two-plate are into dielectric should select high pressure, the material that partial discharge is low, dielectric constant is moderate
Material.
As shown in accompanying drawing 1,2, the Transformer Rectifier Unit includes transformer and rectifier bridge Dl, the transformer inputs with
Draw-out power supply output end is electrically connected, and piezo-resistance RV1, the rectification are parallel with draw-out power supply output end and transformer primary side
Bridge Dl input is electrically connected with the output end of transformer, and the direct current of parallel connection is electrically connected with the output end of the rectifier bridge Dl
Hold C4 and voltage-stabiliser tube VD1.
The effect of Transformer Rectifier Unit be by capacitive divider take can the AC conversion of electric capacity C1 output be required
The direct current of voltage class, relatively stable direct current is provided after filtering, be easy to rear class electrical equipment to use.Here transformer
Power frequency reducing transformer Tl can be used, Transformer Rectifier Unit is mainly made up of power frequency reducing transformer Tl and rectifier bridge Dl, but is not limited to
This.Because power frequency reducing transformer Tl and its load are mainly emotional resistance, draw-out power supply output end is connected to, it is humorous in such power network
Wave frequency rate may cause resonance between capacitive divider and power frequency reducing transformer T1 primary sides, therefore in the output for taking energy electric capacity
End and piezo-resistance RV1 in parallel between power frequency reducing transformer T1 primary side.In normal operation, piezo-resistance RVl leakage currents
It is minimum, in high-impedance state；When power frequency reducing transformer T1 first side windings occur abnormal over-pressed, caused overvoltage makes piezo-resistance
Action is short-circuit by power frequency reducing transformer T1 first side windings rapidly by RVl so that device is powered off so as to be protected.Resonance phenomena disappears
Afterwards, piezo-resistance RVl reverts to high-impedance state, and device can normal operation input again automatically.Transformer Rectifier Unit can also be
Rectifier bridge Dl output end is connected with DC capacitor Cl and voltage-stabiliser tube VD1, and DC capacitor Cl should select Large Copacity, so as to strengthen
Its energy storage filter capacity, and mitigation causes influence caused by voltage Uac fluctuations because of the change of load impedance.
As shown in accompanying drawing 1,3, the rectifier bridge D1 includes the commutation diode of four encapsulation, two of which commutation diode
Positive pole be joined together to form positive output end, the negative pole of two other commutation diode is joined together to form negative output terminal.
Here rectifier bridge D1 positive output end is electrically connected with equipotentiality voltage, and rectifier bridge D1 negative output terminal electrically connects with DC capacitor C4.
As shown in accompanying drawing 1,4, the power conversion unit includes DC voltage-stabilizing module, the output of the DC voltage-stabilizing module
End is parallel with filter capacitor C3.Here Udc is the input of power conversion unit, and Udc is converted into supplying after DC voltage-stabilizing
The direct current of the voltage class of electrical equipment, then export to electrical equipment after electric capacity C3 filtering after filtering and provide electricity for it
Source.
As shown in accompanying drawing 1,4, the DC voltage-stabilizing module is DC-DC power module；Or/and the DC voltage-stabilizing module
For low-dropout regulator.
As needed, the capacitive divider is ceramic condenser divider.
The application method of the above-mentioned energy taking device based on capacitive divider, the capacitive divider are arranged in insulator
Portion.
Here energy electric capacity C1 and derided capacitors C2 to derided capacitors Cn is taken to can be installed within the column with full skirt design
In insulator, fully reducing device volume makes its entirety to be built within insulator, reduces cost, lifts service life.This
The features such as utility model has small volume, in light weight, and cost is low, long lifespan, and security is good.
Above technical characteristic constitutes embodiment of the present utility model, and it has stronger adaptability and implementation result, can
According to the non-essential technical characteristic of increase and decrease is actually needed, to meet the needs of different situations.
Claims (10)
1. a kind of energy taking device based on capacitive divider, it is characterised in that including high voltage bus, capacitive divider, Transformer Rectifier
Unit and power conversion unit, the outside of the capacitive divider are provided with insulation crust, and the capacitive divider includes being series at
Energy electric capacity and derided capacitors are taken between high voltage bus and the earth, the input for taking energy electric capacity is connected electrically in high voltage bus
On, take the output end of energy electric capacity to be electrically connected with derided capacitors input, the output head grounding of the derided capacitors can electric capacity taking
Input and output end on be electrically connected with draw-out power supply lead, the input and draw-out power supply of the Transformer Rectifier Unit are defeated
Go out end electrical connection, the output end of Transformer Rectifier Unit electrically connects with the input of power conversion unit.
2. the energy taking device according to claim 1 based on capacitive divider, it is characterised in that described to take the defeated of energy electric capacity
Go out end and be in series with multiple derided capacitors, each derided capacitors are sequentially cascaded.
3. the energy taking device according to claim 1 or 2 based on capacitive divider, it is characterised in that the Transformer Rectifier list
Member includes transformer and rectifier bridge, and the transformer inputs electrically connect with draw-out power supply output end, in draw-out power supply output end
Piezo-resistance is parallel with transformer primary side, the input of the rectifier bridge electrically connects with the output end of transformer, described whole
Flow the DC capacitor and voltage-stabiliser tube that parallel connection is electrically connected with the output end of bridge.
4. the energy taking device according to claim 3 based on capacitive divider, it is characterised in that the rectifier bridge includes four
The commutation diode of individual encapsulation, the positive pole of two of which commutation diode are joined together to form positive output end, and two other is whole
The negative pole of stream diode is joined together to form negative output terminal.
5. according to the energy taking device based on capacitive divider described in claim 1 or 2 or 4, it is characterised in that the power supply becomes
Changing unit includes DC voltage-stabilizing module, and the output end of DC voltage-stabilizing module is parallel with filter capacitor.
6. the energy taking device according to claim 3 based on capacitive divider, it is characterised in that the power conversion unit
Including DC voltage-stabilizing module, the output end of DC voltage-stabilizing module is parallel with filter capacitor.
7. the energy taking device according to claim 5 based on capacitive divider, it is characterised in that the DC voltage-stabilizing module
For DC-DC power module；Or/and the DC voltage-stabilizing module is low-dropout regulator.
8. the energy taking device according to claim 6 based on capacitive divider, it is characterised in that the DC voltage-stabilizing module
For DC-DC power module；Or/and the DC voltage-stabilizing module is low-dropout regulator.
9. according to the energy taking device based on capacitive divider described in claim 1 or 2 or 4 or 6 or 7 or 8, it is characterised in that institute
It is ceramic condenser divider to state capacitive divider.
10. the energy taking device according to claim 5 based on capacitive divider, it is characterised in that the capacitive divider is
Ceramic condenser divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720466714.0U CN206712670U (en) | 2017-04-28 | 2017-04-28 | Energy taking device based on capacitive divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720466714.0U CN206712670U (en) | 2017-04-28 | 2017-04-28 | Energy taking device based on capacitive divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206712670U true CN206712670U (en) | 2017-12-05 |
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ID=60457710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720466714.0U Active CN206712670U (en) | 2017-04-28 | 2017-04-28 | Energy taking device based on capacitive divider |
Country Status (1)
| Country | Link |
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| CN (1) | CN206712670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040144A (en) * | 2017-04-28 | 2017-08-11 | 新疆天成鲁源电气工程有限公司 | Energy taking device and seal based on capacitive divider |
| CN108054903A (en) * | 2017-12-11 | 2018-05-18 | 广州金升阳科技有限公司 | Switch converters switching node power-supply circuit |
-
2017
- 2017-04-28 CN CN201720466714.0U patent/CN206712670U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040144A (en) * | 2017-04-28 | 2017-08-11 | 新疆天成鲁源电气工程有限公司 | Energy taking device and seal based on capacitive divider |
| CN108054903A (en) * | 2017-12-11 | 2018-05-18 | 广州金升阳科技有限公司 | Switch converters switching node power-supply circuit |
| CN108054903B (en) * | 2017-12-11 | 2023-11-17 | 广州金升阳科技有限公司 | Switching node circuit for switching converter |
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