CN109560578A - A kind of device and method taking energy from ultra-high-tension power transmission line - Google Patents
A kind of device and method taking energy from ultra-high-tension power transmission line Download PDFInfo
- Publication number
- CN109560578A CN109560578A CN201811158649.0A CN201811158649A CN109560578A CN 109560578 A CN109560578 A CN 109560578A CN 201811158649 A CN201811158649 A CN 201811158649A CN 109560578 A CN109560578 A CN 109560578A
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- output
- filter capacitor
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 78
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 43
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 32
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 28
- 230000000694 effects Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000005670 electromagnetic radiation Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005350 ferromagnetic resonance Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
-
- H02J5/005—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of device and methods that energy is taken from ultra-high-tension power transmission line, belong to high-voltage technology and power technique fields.Device includes: high-voltage capacitor, first order step-down transformer, bidirectional thyristor module, rectification module, filter capacitor, voltage monitoring module, thyristor driver module, DC/DC Voltage stabilizing module, Overvoltage suppressing module and shielded box.The present invention uses principle of capacitive divider, and high-voltage capacitor group is connected with transformer primary side, the output power of energy taking device is effectively improved, is depressured using two-stage, reduce transformer insulated design requirement, reduce volume of transformer.By the mode of connection of flexible configuration between high-voltage capacitor and first order step-down transformer, it can be achieved that between phase-ground cold end and the alternate acquisition electric energy of phase-between hot end, phase-ground, can be all kinds of power supply for electrical equipment.
Description
Technical field
The present invention relates to the crossing domains of high-voltage technology and power technology, and more particularly, to one kind from high pressure
Transmission line of electricity takes the device and method of energy.
Background technique
With the continuous expansion of power grid scale with the quick upgrading of grid automation technology, transmission line of electricity, substation are transported
More stringent requirements are proposed for the intelligent level of dimension work.Transmission line of electricity, power transformation station owner are obtained by all kinds of on-Line Monitor Devices
The operation data of equipment, their operating status of real-time monitoring can provide decision-making foundation for the intelligent maintenance work of power grid, from
And the development for pushing this to work, the safe and stable operation for further increasing power grid are horizontal.But it is used for transmission line of electricity, power transformation
Outdoors, a part is mounted in substation, in the online of ground potential end for the on-Line Monitor Device majority installation of station owner's equipment
Monitoring device can connect alternating current as power supply.But the objective condition such as installation environment, apparatus insulated requirement are constrained to, those are distributed in
Along transmission of electricity corridor, in cold end and it must be installed on the on-Line Monitor Device of hot end, be generally difficult to obtain reliable
Power supply.Therefore, the reliable power supply for how solving the problems, such as above-mentioned apparatus becomes restriction smart grid maintenance work and advances
One of key restriction factors.
Transmission line of electricity, substation's main equipment on-Line Monitor Device installation outdoors, while in high voltage, high current and
In complex electromagnetic environment, it is defeated that above situation requires the power supply of on-Line Monitor Device that can not only stablize as common power supply
Out, and to have stronger electromagnetism interference performance and insulation performance, this is also required to carry out phase on the basis of existing technology
The improvement and innovation answered.
Currently, conventional power supply mode has storage battery power supply, solar cell for supplying power, small-sized fan collocation battery to supply
Electricity, current transformer take energy, voltage transformer to take energy, capacitance partial pressure that energy, the condenser type based on high voltage electric field is taken to take energy etc..Electric power storage
Pond power supply is only applicable to low power application, needs periodic maintenance to replace under normal circumstances, and be placed in open air for a long time and lead
Cause accumulator pole easy to damage；The mode of solar cell for supplying power and small-sized fan collocation storage battery power supply is capable of providing larger function
Rate, equipment are easily installed, thus are more common power supply modes.But by illumination condition, environment temperature, seasonal variations
Etc. factors be affected, lead to power supply instability, and also higher from failure rate from the point of view of operating experience before this；Current transformer
Taking only need to pass through coil for transmission line of electricity, can be obtained energy using magnetic field induction, the two does not have physical connection, installation side
Just, there is good insulation performance.But the electric current on transmission line of electricity is usual and non-constant, and has larger fluctuation, current transformer
Taking can be under such conditions it is difficult to ensure that stable output.Voltage transformer is divided into electromagnetic potential transformer and capacitor voltage
Mutual inductor, the working principle of electromagnetic potential transformer, construction and connection method are all identical as transformer, and difference is only that capacity is wanted
It is much smaller, it can satisfy the power demand of most counting apparatus and stablize output, there is problems in that equipment volume is big, installs not
Just, higher cost, and can not be the device power supply in hot end.Capacitance type potential transformer by capacitive divider, in
The composition such as pressure transformer and compensation reactor, can also obtain stable output, but take energy circuit that can change capacitive divider
No-load voltage ratio influences voltage measuring transformer precision, in addition to avoid causing the ferromagnetic resonance inside capacitance type potential transformer, it is necessary to
The resistance matching problem for thinking over load, which has limited its carrying load abilities.And in order to improve carrying load ability while avoid
Ferromagnetic resonance needs to be passed to compensation reactor in middle pressure transformer input terminal, increases the complexity of equipment, this mode
It can not be the device power supply in hot end.CN104300799A and CN104901342A are proposed based on capacitive divider
Take can mode.Capacitive divider is connected in parallel between two phase lines by the former, is realized by capacitance partial pressure and surge protection circuit
Decompression obtains DC voltage by rectification circuit, the DC voltage needed for being exported by buck DC-DC and starting control circuit,
It releases simultaneously there are also over-voltage detection and voltage clamping and energy and waits auxiliary circuits.It is this to take energy mode compared with line-ground mode for electricity
The insulating requirements for holding divider are higher, therefore higher cost, equipment volume are larger, and in addition auxiliary control circuit is more, increases
The probability of failure.The latter has references to the design principle of capacitance type potential transformer, and derided capacitors and load balancing reactor are placed on
Circuit Fault on Secondary Transformer obtains direct current by rectification module, then by power storage in supercapacitor group, then by supercapacitor
Group powers to the load.It is this to take energy mode higher for the insulating requirements of transformer, volume of transformer need to be increased, lead to cost liter
Height, in addition the service life of supercapacitor and working condition are affected by ambient temperature.CN202475305 proposes one kind
Condenser type based on high voltage electric field take can mode, using high-voltage line two it is alternate or one between high voltage transmission line and the earth it is existing
High voltage electric field, suitable distance and position is put into the metallic object of suitable size, resulting distribution capacity and structure between them
At two concatenated equivalent capacitys, electric field energy is obtained by the partial pressure of two series equivalent capacitances, by energy stores and accumulation
Get up, after the electric energy of accumulation reaches certain numerical value, then to load supplyings such as the microprocessor of low-power consumption and wireless transceivers.This
Kind take can mode be typically only capable to obtain tens of microwatts to the electric energy of tens of milliwatts, output power is minimum, and also can not be in
The device of hot end is powered.
Summary of the invention
The present invention is in view of the above-mentioned problems, propose a kind of device and method for taking energy from ultra-high-tension power transmission line, side of the present invention
Method includes:
High-voltage capacitor, the high-voltage capacitor are connected with first order step-down transformer, and it is defeated that high-voltage capacitor receives high pressure
The alternating voltage of electric line is transmitted to first order step-down transformer；
The other AC high voltage of KV level can be converted by first order step-down transformer, the first order step-down transformer
The AC low-tension electricity of hectovolt rank；
Bidirectional thyristor module, the bidirectional thyristor module are controlled by the turn-on and turn-off of bidirectional thyristor module
Voltage on filter condenser fluctuates it in predetermined range, and the scheduled range is controlled by voltage monitoring module；
The alternating voltage that first order transformer inputs is converted to DC voltage by rectification module, the rectification module, rectification
The DC output side of module is in parallel with filter condenser and voltage monitoring module；
Filter capacitor, the filter capacitor stablize the DC voltage amplitude and smooth dc voltage wave of rectification module output
Shape；
Voltage monitoring module, the voltage monitoring module monitors both ends of filter capacitor voltage, when voltage value is more than the first threshold
When value Vmax, control thyristor driver module issues Continuity signal, bidirectional thyristor module is connected, by second level downconverter
The secondary circuit short-circuit of device, the output of rectification module become 0, and filter capacitor starts to discharge, both end voltage decline, bidirectional thyristor mould
Block turns off naturally in zero crossing, and the output of rectification module restores immediately, charges to filter capacitor, on both ends of filter capacitor voltage
It rises, if bidirectional thyristor module is turned off the moment, sets second threshold Vmin for the lower limit value of both ends of filter capacitor voltage, then
It knows under the action of voltage monitoring module, both ends of filter capacitor voltage range is Vmin≤Vc≤Vmax；
Thyristor driver module, the thyristor driver module drive bidirectional thyristor under the control of voltage monitoring module
Module conducting；
The DC voltage that rectification module exports is reduced to load institute by DC/DC Voltage stabilizing module, the DC/DC Voltage stabilizing module
The voltage needed stablizes the DC voltage of rectification module output；
Overvoltage suppressing module, including several varistors, several described varistors are connected to parallel way
One and secondary side of first order step-down transformer, the secondary side of second level step-down transformer, rectification module direct current output anode
It is to prevent extraneous overvoltage damage circuit elements between outer casing of power supply, between the cathode and outer casing of power supply of rectifier bridge direct current output
Part；And
Shielded box, be equipped with inside the shielded box varistor, first order step-down transformer, bidirectional thyristor module,
Rectification module, filter capacitor, voltage monitoring module, thyristor driver module and DC/DC Voltage stabilizing module, shielded box shield electromagnetism
Radiate and avoid the influence of outside environmental elements.
Optionally, device further include: hundreds of volt high pressures that the second step-down transformer the exports first order transformer are converted
At the low pressure of tens of volts.
Optionally, device further include: output adjusts resistance, and the effect that the output adjusts resistance is to adjust DC/DC pressure stabilizing
The output voltage of module, can in the voltage range of 1.25V to 36V linear regulation, meet different loads for operating voltage need
It wants.It includes 1 potentiometer and 1 high-precision fixed value resistance that output, which adjusts resistance, and potentiometer one terminates DC/DC Voltage stabilizing module
Positive output terminals, one end of another high-precision fixed value resistance of termination, another termination DC/DC pressure stabilizing mould of high-precision fixed value resistance
The negative output terminals of block, potentiometer taper connect the feedback pin of DC/DC Voltage stabilizing module.
Optionally, high-voltage capacitor includes: the core being made of several concatenated capacitors, and the core is encapsulated in insulator
In cylinder or composite material sleeve, in the oil-filled immersion core of sleeve inner as dielectric.
Optionally, DC/DC Voltage stabilizing module selects switching mode to be depressured chip, and the chip is depressured based on the buck of PWM technology
Circuit.
Optionally, preset range is positive and negative the 10% of rectification module nominal input voltage.
Optionally, device is installed on direct current output direct current output between ground potential end, phase-ground between phase-ground and is located at
Between hot end and phase-phase.
The present invention also provides a kind of methods for taking energy from ultra-high-tension power transmission line, comprising:
High-voltage capacitor receives the alternating voltage of ultra-high-tension power transmission line, is transmitted to first order step-down transformer, first order drop
The other AC high voltage of KV level is converted into the AC low-tension electricity of hectovolt rank and is input to rectification module by pressure transformer；
AC low-tension electricity is converted to DC low-voltage electricity by rectification module, and is charged to filter capacitor；
Voltage monitoring module monitors both ends of filter capacitor voltage, when both ends of filter capacitor voltage is more than DC/DC Voltage stabilizing module
Nominal input voltage when, voltage monitoring module control thyristor driver module to bidirectional thyristor module issue pulse signal,
Promote bidirectional thyristor module to be connected, the alternating current of rectification module is inputted into bypass, to make direct current output zero, is filtered at this time
Capacitor electric discharge, voltage reduce, and bidirectional thyristor module disconnects naturally after the predetermined time, and the direct current output of rectification module is restored,
It charges again to filter capacitor；
When both ends of filter capacitor voltage meets the nominal input voltage of DC/DC Voltage stabilizing module, DC/DC Voltage stabilizing module will
Both ends of filter capacitor voltage is adjusted to the voltage rating level of load, is exported sufficient electric current and is carried out pressure stabilizing to voltage.
Optionally, method further include: the size of resistance adjustment DC/DC Voltage stabilizing module output voltage is adjusted by output.
Optionally, method further include: hundreds of volt high pressures that the second step-down transformer the exports first order transformer are converted
At the low pressure of tens of volts.
The present invention improves the output power of power supply, reduces the insulating Design difficulty of energy taking device, is suitable for power train
Plurality of application scenes in system has good electromagnetism interference performance, has easily output regulative mode, can be steady for a long time
Surely it works.
Invention effect: the present invention uses principle of capacitive divider, high-voltage capacitor group is connected with transformer primary side, effectively
Ground improves the output power of energy taking device, is depressured using two-stage, reduces transformer insulated design requirement, reduces transformation body
Product.The voltage control of both ends of filter capacitor is existed by bidirectional thyristor module, voltage monitoring module and thyristor driver module
In certain range, the reliable and stable output of energy taking device ensure that, while can also adjust filtered electrical according to demanded power output
Hold the voltage range at both ends.Using switching mode DC/DC voltage stabilizing chip, the efficiency of energy taking device is improved.According to loading condition, lead to
Overvoltage output regulating circuitry adjusts the output voltage of energy taking device, has expanded the scope of application of energy taking device.Pass through high-voltage electricity
The mode of connection of flexible configuration is, it can be achieved that between phase-ground between hot end, phase-ground between container and first order step-down transformer
Cold end and the alternate acquisition electric energy of phase-can be all kinds of power supply for electrical equipment.
Detailed description of the invention
Fig. 1 is a kind of structure drawing of device that energy is taken from ultra-high-tension power transmission line of the present invention；
Fig. 2 is a kind of method flow diagram that energy is taken from ultra-high-tension power transmission line of the present invention；
Fig. 3 is that the present invention is a kind of from ultra-high-tension power transmission line takes the device of energy to be installed between phase-ground, direct current output is located at ground
Potential end structure chart；
Fig. 4 is that the present invention is a kind of takes the device of energy to be installed on structure chart between phase-phase from ultra-high-tension power transmission line；
Wherein, a phase of 1- transmission line of electricity, another phase of 2- transmission line of electricity, 3- high-voltage capacitor, 4- varistor, 5-
Level-one step-down transformer, 6- bidirectional thyristor module, the second level 7- step-down transformer, 8- rectification module, 9- filter capacitor, 10-
Voltage monitoring module, 11- thyristor driver module, 12-DC/DC Voltage stabilizing module, 13- output voltage adjust resistance, 14- load.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
The present invention provide it is a kind of from ultra-high-tension power transmission line take can device be installed between phase-ground direct current output and be located at ground electricity
Position end, as shown in Figure 1, apparatus of the present invention include:
High-voltage capacitor, the high-voltage capacitor are connected with first order step-down transformer, and it is defeated that high-voltage capacitor receives high pressure
The alternating voltage of electric line is transmitted to first order step-down transformer, wherein high-voltage capacitor includes: by several concatenated capacitors
The core that device is constituted, the core is encapsulated in insulator cylinder or composite material sleeve, in the oil-filled immersion core conduct of sleeve inner
Dielectric.
The other AC high voltage of KV level can be converted by first order step-down transformer, the first order step-down transformer
The AC low-tension electricity of hectovolt rank；
Bidirectional thyristor module, the bidirectional thyristor module are controlled by the turn-on and turn-off of bidirectional thyristor module
Voltage on filter condenser fluctuates it in predetermined range, and the scheduled range is controlled by voltage monitoring module,
Wherein, preset range is positive and negative the 10% of rectification module nominal input voltage.
The alternating voltage that first order transformer inputs is converted to DC voltage by rectification module, the rectification module, rectification
The DC output side of module is in parallel with filter condenser and voltage monitoring module；
Filter capacitor, the filter capacitor stablize the DC voltage amplitude and smooth dc voltage wave of rectification module output
Shape；
Voltage monitoring module, the voltage monitoring module monitors both ends of filter capacitor voltage, when voltage value is more than the first threshold
When value Vmax, control thyristor driver module issues Continuity signal, bidirectional thyristor module is connected, by second level downconverter
The secondary circuit short-circuit of device, the output of rectification module become 0, and filter capacitor starts to discharge, both end voltage decline, bidirectional thyristor mould
Block turns off naturally in zero crossing, and the output of rectification module restores immediately, charges to filter capacitor, on both ends of filter capacitor voltage
It rises, if bidirectional thyristor module is turned off the moment, sets second threshold Vmin for the lower limit value of both ends of filter capacitor voltage, then
It knows under the action of voltage monitoring module, both ends of filter capacitor voltage range is Vmin≤Vc≤Vmax；
Thyristor driver module, the thyristor driver module drive bidirectional thyristor under the control of voltage monitoring module
Module conducting；
The DC voltage that rectification module exports is reduced to load institute by DC/DC Voltage stabilizing module, the DC/DC Voltage stabilizing module
The voltage needed, stablizes the DC voltage of rectification module output, and DC/DC Voltage stabilizing module selects switching mode to be depressured chip, the chip
Buck reduction voltage circuit based on PWM technology.
Overvoltage suppressing module, including several varistors, several described varistors are connected to parallel way
One and secondary side of first order step-down transformer, the secondary side of second level step-down transformer, rectification module direct current output anode
It is to prevent extraneous overvoltage damage circuit elements between outer casing of power supply, between the cathode and outer casing of power supply of rectifier bridge direct current output
Part；And
Shielded box, be equipped with inside the shielded box varistor, first order step-down transformer, bidirectional thyristor module,
Rectification module, filter capacitor, voltage monitoring module, thyristor driver module and DC/DC Voltage stabilizing module, shielded box shield electromagnetism
Radiate and avoid the influence of outside environmental elements.
Apparatus of the present invention further include: the second step-down transformer and output adjust resistance；
Hundreds of volt high pressures that second step-down transformer exports first order transformer are converted into the low pressure of tens of volts.
Output adjusts resistance, and the effect that the output adjusts resistance is the output voltage for adjusting DC/DC Voltage stabilizing module, can be
Linear regulation in the voltage range of 1.25V to 36V meets different loads for operating voltage needs.It includes 1 that output, which adjusts resistance,
A potentiometer and 1 high-precision fixed value resistance, potentiometer one terminate the positive output terminals of DC/DC Voltage stabilizing module, another termination
One end of high-precision fixed value resistance, the negative output terminals of another termination DC/DC Voltage stabilizing module of high-precision fixed value resistance, current potential
Device tap connects the feedback pin of DC/DC Voltage stabilizing module.
Apparatus of the present invention can also be installed on direct current output between phase-ground as shown in Figure 3 and be located at hot end and such as Fig. 4 institute
Show between phase-phase.
The present invention also provides a kind of methods for taking energy from ultra-high-tension power transmission line, as shown in figure 4, described include:
High-voltage capacitor receives the alternating voltage of ultra-high-tension power transmission line, is transmitted to first order step-down transformer, first order drop
The other AC high voltage of KV level is converted into the AC low-tension electricity of hectovolt rank and is input to rectification module by pressure transformer；Second
Hundreds of volt high pressures that step-down transformer exports first order transformer are converted into the low pressure of tens of volts.
AC low-tension electricity is converted to DC low-voltage electricity by rectification module, and is charged to filter capacitor；
Voltage monitoring module monitors both ends of filter capacitor voltage, when both ends of filter capacitor voltage is more than DC/DC Voltage stabilizing module
Nominal input voltage when, voltage monitoring module control thyristor driver module to bidirectional thyristor module issue pulse signal,
Promote bidirectional thyristor module to be connected, the alternating current of rectification module is inputted into bypass, to make direct current output zero, is filtered at this time
Capacitor electric discharge, voltage reduce, and bidirectional thyristor module disconnects naturally after the predetermined time, and the direct current output of rectification module is restored,
It charges again to filter capacitor；
When both ends of filter capacitor voltage meets the nominal input voltage of DC/DC Voltage stabilizing module, DC/DC Voltage stabilizing module will
Both ends of filter capacitor voltage is adjusted to the voltage rating level of load, is exported sufficient electric current and is carried out pressure stabilizing to voltage.
The size of resistance adjustment DC/DC Voltage stabilizing module output voltage is adjusted by output.
The present invention improves the output power of power supply, reduces the insulating Design difficulty of energy taking device, is suitable for power train
Plurality of application scenes in system has good electromagnetism interference performance, has easily output regulative mode, can be steady for a long time
Surely it works.
Invention effect: the present invention uses principle of capacitive divider, high-voltage capacitor group is connected with transformer primary side, effectively
Ground improves the output power of energy taking device, is depressured using two-stage, reduces transformer insulated design requirement, reduces transformation body
Product.The voltage control of both ends of filter capacitor is existed by bidirectional thyristor module, voltage monitoring module and thyristor driver module
In certain range, the reliable and stable output of energy taking device ensure that, while can also adjust filtered electrical according to demanded power output
Hold the voltage range at both ends.Using switching mode DC/DC voltage stabilizing chip, the efficiency of energy taking device is improved.According to loading condition, lead to
Overvoltage output regulating circuitry adjusts the output voltage of energy taking device, has expanded the scope of application of energy taking device.Pass through high-voltage electricity
The mode of connection of flexible configuration is, it can be achieved that between phase-ground between hot end, phase-ground between container and first order step-down transformer
Cold end and the alternate acquisition electric energy of phase-can be all kinds of power supply for electrical equipment.
Claims (10)
1. a kind of device for taking energy from ultra-high-tension power transmission line, described device include:
High-voltage capacitor, the high-voltage capacitor are connected with first order step-down transformer, and it is defeated that high-voltage capacitor obtains high-voltage alternating
The electric energy of electric line is transmitted to first order step-down transformer；
The other AC high voltage of KV level can be converted into hectovolt by first order step-down transformer, the first order step-down transformer
The AC low-tension electricity of rank；
Bidirectional thyristor module, the bidirectional thyristor module control filtering by the turn-on and turn-off of bidirectional thyristor module
Voltage on capacitor fluctuates it in predetermined range, and the scheduled range is controlled by voltage monitoring module；
The alternating current that first order transformer inputs is converted to direct current by rectification module, the rectification module, rectification module it is straight
It is in parallel with filter condenser and voltage monitoring module to flow outlet side；
Filter capacitor, the filter capacitor stablize the DC voltage amplitude and smooth DC voltage waveform of rectification module output；
Voltage monitoring module, the voltage monitoring module monitor both ends of filter capacitor voltage, when voltage value is more than first threshold
When Vmax, control thyristor driver module issues Continuity signal, bidirectional thyristor module is connected, by second level step-down transformer
Secondary circuit short-circuit, the output of rectification module becomes 0, and filter capacitor starts to discharge, both end voltage decline, bidirectional thyristor module
It being turned off naturally in zero crossing, the output of rectification module restores immediately, charges to filter capacitor, and both ends of filter capacitor voltage rises,
If bidirectional thyristor module is turned off the moment, second threshold Vmin is set by the lower limit value of both ends of filter capacitor voltage, then may be used
Know under the action of voltage monitoring module, both ends of filter capacitor voltage range is Vmin≤Vc≤Vmax；
Thyristor driver module, the thyristor driver module drive bidirectional thyristor module under the control of voltage monitoring module
Conducting；
The DC voltage that rectification module exports is reduced to needed for load by DC/DC Voltage stabilizing module, the DC/DC Voltage stabilizing module
Voltage stablizes the DC voltage of rectification module output；
Overvoltage suppressing module, including several varistors, several described varistors are connected to first with parallel way
Grade one and secondary side of step-down transformer, the secondary side of second level step-down transformer, rectification module direct current output anode with electricity
It is to prevent extraneous overvoltage damage circuit element between the shell of source, between the cathode and outer casing of power supply of rectifier bridge direct current output；With
And
Shielded box is equipped with varistor, first order step-down transformer, bidirectional thyristor module, rectification inside the shielded box
Module, filter capacitor, voltage monitoring module, thyristor driver module and DC/DC Voltage stabilizing module, shielded box shield electromagnetic radiation
With the influence for avoiding outside environmental elements.
2. the apparatus according to claim 1, described device further include: the second step-down transformer is defeated by first order transformer
Hundreds of volt high pressures out are converted into the low pressure of tens of volts.
3. according to the method described in claim 1, described device further include: output adjusts resistance, and the output adjusts resistance
Effect be adjust DC/DC Voltage stabilizing module output voltage, can in the voltage range of 1.25V to 36V linear regulation, meet difference
Load needs operating voltage.It includes 1 potentiometer and 1 high-precision fixed value resistance, potentiometer one end that output, which adjusts resistance,
Connect the positive output terminals of DC/DC Voltage stabilizing module, one end of another high-precision fixed value resistance of termination, high-precision fixed value resistance it is another
The negative output terminals of one termination DC/DC Voltage stabilizing module, potentiometer taper connect the feedback pin of DC/DC Voltage stabilizing module.
4. the apparatus according to claim 1, the high-voltage capacitor includes: the core being made of several concatenated capacitors
Body, the core are encapsulated in insulator cylinder or composite material sleeve, in the oil-filled immersion core of sleeve inner as dielectric.
5. the apparatus according to claim 1, the DC/DC Voltage stabilizing module selects switching mode to be depressured chip, the chip
Buck reduction voltage circuit based on PWM technology.
6. the apparatus according to claim 1, the preset range is positive and negative the 10% of rectification module nominal input voltage.
7. the apparatus according to claim 1, the device be installed on direct current output between phase-ground be located at ground potential end,
Direct current output is between hot end and phase-phase between phase-ground.
8. a method of taking from ultra-high-tension power transmission line can, which comprises
High-voltage capacitor receives the alternating voltage of ultra-high-tension power transmission line, is transmitted to first order step-down transformer, and first order decompression becomes
The other AC high voltage of KV level is converted into the AC low-tension electricity of hectovolt rank and is input to rectification module by depressor；
AC low-tension electricity is converted to DC low-voltage electricity by rectification module, and is charged to filter capacitor；
Voltage monitoring module monitors both ends of filter capacitor voltage, when both ends of filter capacitor voltage is more than the volume of DC/DC Voltage stabilizing module
When determining input voltage, voltage monitoring module controls thyristor driver module and issues pulse signal to bidirectional thyristor module, promotes
The alternating current of rectification module is inputted bypass by the conducting of bidirectional thyristor module, to make direct current output zero, filter capacitor at this time
Electric discharge, voltage reduce, and bidirectional thyristor module disconnects naturally after the predetermined time, and the direct current output of rectification module is restored, again
It charges to filter capacitor；
When both ends of filter capacitor voltage meets the nominal input voltage of DC/DC Voltage stabilizing module, DC/DC Voltage stabilizing module is by filtered electrical
Hold both end voltage to adjust to the voltage rating level of load, exports sufficient electric current and pressure stabilizing is carried out to voltage.
9. according to the method described in claim 8, the method further include: adjust resistance adjustment DC/DC pressure stabilizing by output
The size of module output voltage.
10. according to the method described in claim 8, the method further include: the second step-down transformer is by first order transformation
Hundreds of volt high pressures of device output are converted into the low pressure of tens of volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158649.0A CN109560578A (en) | 2018-09-30 | 2018-09-30 | A kind of device and method taking energy from ultra-high-tension power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158649.0A CN109560578A (en) | 2018-09-30 | 2018-09-30 | A kind of device and method taking energy from ultra-high-tension power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109560578A true CN109560578A (en) | 2019-04-02 |
Family
ID=65864806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158649.0A Pending CN109560578A (en) | 2018-09-30 | 2018-09-30 | A kind of device and method taking energy from ultra-high-tension power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109560578A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544942A (en) * | 2019-09-06 | 2019-12-06 | 西安交通大学 | reactive compensation type capacitor voltage-reducing electricity-taking device and working method |
| CN110739750A (en) * | 2019-10-23 | 2020-01-31 | 南京农业大学 | High-voltage power transmission self-energy-taking device |
| CN112600182A (en) * | 2020-10-28 | 2021-04-02 | 西安交通大学 | 10kV capacitor current-limiting power taking device and protection method |
| CN112713663A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司中山供电局 | Power taking device for secondary equipment of high-voltage transmission line |
| CN113258801A (en) * | 2020-02-12 | 2021-08-13 | 新疆金风科技股份有限公司 | Direct current gets electric installation, system and wind generating set's start control system |
| CN113740679A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Capacitor current-limiting electricity taking device and local discharge amount reduction method thereof |
| WO2024093486A1 (en) * | 2022-10-31 | 2024-05-10 | 云南电网有限责任公司电力科学研究院 | Power supply apparatus for power transmission line monitoring device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286083A (en) * | 1999-03-31 | 2000-10-13 | Hisanaga Denki:Kk | Power supply device for high-pressure discharge lamp |
| CN102545688A (en) * | 2011-12-12 | 2012-07-04 | 中国电力科学研究院 | Power pulse generation device, drive method, and high-voltage wire electricity getting method |
| CN202334010U (en) * | 2011-11-10 | 2012-07-11 | 程顺 | High voltage power service power supply with double super capacitors for energy storage |
| CN202634316U (en) * | 2012-06-04 | 2012-12-26 | 国网电力科学研究院 | Energy taking device based on capacitive voltage divider |
| CN103501116A (en) * | 2013-09-24 | 2014-01-08 | 许继电气股份有限公司 | Power supply device of high-voltage direct current electronic equipment |
| CN204068408U (en) * | 2014-09-24 | 2014-12-31 | 福州大学 | Be applied to the novel power taking supply unit of cable work well array water |
| CN104269996A (en) * | 2014-09-05 | 2015-01-07 | 中国西电电气股份有限公司 | Auxiliary energy-taking device and method for extra-high voltage converter valve running test |
| CN104300799A (en) * | 2014-10-10 | 2015-01-21 | 华立仪表集团股份有限公司 | Device and method for obtaining power supply from high-voltage power transmission line |
| CN104901342A (en) * | 2015-04-30 | 2015-09-09 | 大连理工大学 | Capacitor voltage division-based high-voltage electricity taking device |
-
2018
- 2018-09-30 CN CN201811158649.0A patent/CN109560578A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286083A (en) * | 1999-03-31 | 2000-10-13 | Hisanaga Denki:Kk | Power supply device for high-pressure discharge lamp |
| CN202334010U (en) * | 2011-11-10 | 2012-07-11 | 程顺 | High voltage power service power supply with double super capacitors for energy storage |
| CN102545688A (en) * | 2011-12-12 | 2012-07-04 | 中国电力科学研究院 | Power pulse generation device, drive method, and high-voltage wire electricity getting method |
| CN202634316U (en) * | 2012-06-04 | 2012-12-26 | 国网电力科学研究院 | Energy taking device based on capacitive voltage divider |
| CN103501116A (en) * | 2013-09-24 | 2014-01-08 | 许继电气股份有限公司 | Power supply device of high-voltage direct current electronic equipment |
| CN104269996A (en) * | 2014-09-05 | 2015-01-07 | 中国西电电气股份有限公司 | Auxiliary energy-taking device and method for extra-high voltage converter valve running test |
| CN204068408U (en) * | 2014-09-24 | 2014-12-31 | 福州大学 | Be applied to the novel power taking supply unit of cable work well array water |
| CN104300799A (en) * | 2014-10-10 | 2015-01-21 | 华立仪表集团股份有限公司 | Device and method for obtaining power supply from high-voltage power transmission line |
| CN104901342A (en) * | 2015-04-30 | 2015-09-09 | 大连理工大学 | Capacitor voltage division-based high-voltage electricity taking device |
Non-Patent Citations (1)
| Title |
|---|
| B.R.菲利皮申: "《电力变压器安装》", 28 February 1989, 机械工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544942A (en) * | 2019-09-06 | 2019-12-06 | 西安交通大学 | reactive compensation type capacitor voltage-reducing electricity-taking device and working method |
| CN110739750A (en) * | 2019-10-23 | 2020-01-31 | 南京农业大学 | High-voltage power transmission self-energy-taking device |
| CN113258801A (en) * | 2020-02-12 | 2021-08-13 | 新疆金风科技股份有限公司 | Direct current gets electric installation, system and wind generating set's start control system |
| CN112600182A (en) * | 2020-10-28 | 2021-04-02 | 西安交通大学 | 10kV capacitor current-limiting power taking device and protection method |
| CN112600182B (en) * | 2020-10-28 | 2022-04-22 | 西安交通大学 | 10kV capacitor current-limiting power taking device and protection method |
| CN112713663A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司中山供电局 | Power taking device for secondary equipment of high-voltage transmission line |
| CN113740679A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Capacitor current-limiting electricity taking device and local discharge amount reduction method thereof |
| WO2024093486A1 (en) * | 2022-10-31 | 2024-05-10 | 云南电网有限责任公司电力科学研究院 | Power supply apparatus for power transmission line monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109560578A (en) | A kind of device and method taking energy from ultra-high-tension power transmission line | |
| CN205490151U (en) | High -efficient electric field induction gets electric installation | |
| CN103683455A (en) | Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system | |
| CN201774301U (en) | High frequency switch DC supply system for substation | |
| CN106208269B (en) | A kind of constant current constant voltage induction type wireless charging system | |
| CN110829509A (en) | Simple electric field induction energy-taking power supply | |
| CN108462396A (en) | The controllable high-voltage DC power supply of 35kV oscillatory wave systems | |
| CN203933169U (en) | A kind of electromagnetic induction power taking radio frequency temperature measuring equipment | |
| CN203589825U (en) | Supercapacitor based inductive energy taking power supply device of high voltage measuring system | |
| CN104198900A (en) | Testing device for long term voltage induction and partial discharge measurement test | |
| CN110544942B (en) | Reactive compensation type capacitor voltage-reducing electricity-taking device and working method | |
| CN102447313A (en) | Online power supply device and power supply method utilizing high voltage transmission conductors | |
| CN103872930A (en) | Capacitive step-down electricity taking method suitable for transmission line tower | |
| CN114865760A (en) | Induction power supply based on non-closed magnetic core and power supply method thereof | |
| CN109687540A (en) | A kind of electric wire magnetic field energy acquisition power supply | |
| CN109274275A (en) | A kind of device and method taking energy in transmission line of electricity hot end | |
| CN104901342A (en) | Capacitor voltage division-based high-voltage electricity taking device | |
| CN106877415A (en) | A kind of transmission line online monitoring system power supply | |
| CN109842183B (en) | Induction power taking device of power transmission line and method for obtaining maximum power of induction power taking device | |
| CN208257661U (en) | The controllable high-voltage DC power supply of 35kV oscillatory wave system | |
| CN105811788A (en) | High potential energy supply system used for high voltage power electronic device | |
| CN107040144A (en) | Energy taking device and seal based on capacitive divider | |
| CN206712670U (en) | Energy taking device based on capacitive divider | |
| CN202334336U (en) | Active electronic type transformer power supply | |
| CN114759686A (en) | Sustainable wireless power supply system of high-voltage transmission line on-line monitoring equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190402 |
|
| RJ01 | Rejection of invention patent application after publication |