CN106160150B - A kind of adaptive CT induction takes the power control system and its method of electricity - Google Patents
A kind of adaptive CT induction takes the power control system and its method of electricity Download PDFInfo
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- CN106160150B CN106160150B CN201610712270.4A CN201610712270A CN106160150B CN 106160150 B CN106160150 B CN 106160150B CN 201610712270 A CN201610712270 A CN 201610712270A CN 106160150 B CN106160150 B CN 106160150B
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- 229910052987 metal hydride Inorganic materials 0.000 description 2
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- H02J7/025—
-
- 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
- H02M7/21—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 triode or transistor type requiring continuous application of a control signal
- H02M7/217—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention discloses power control system and its method that a kind of induction of adaptive CT takes electricity, power control system includes that CT induction electricity-fetching module, full-wave rectification block, self-regulation power protection module and energy collect control module；CT, which incudes electricity-fetching module, to carry out preset range electric current electricity is taken to obtain alternating voltage；Full-wave rectification block exports DC voltage after carrying out full-wave rectification to alternating voltage；The power protection module that is self-regulated charges to built-in energy pond according to DC voltage；When detecting energy cell voltage greater than protection voltage, release to CT induction electricity-fetching module；When detecting energy cell voltage less than or equal to protection voltage, energy cell voltage is exported；Energy collects the charged state of power supply state and super capacitor that control module loads micropower according to the adjustment of the size of energy cell voltage；Self-regulation power protection module solves the problems, such as that existing power supply system cannot take electricity to automatically adjust and protect induction, and electric energy, switching energy can be automatically stored.
Description
Technical field
The present invention relates to the power supply controls that electromagnetic induction technology field more particularly to a kind of induction of adaptive CT take electricity
System and method.
Background technique
The distribution network automated range being related in China is wide, but since early stage lacks overall planning, grid structure is complicated weak,
Probability of malfunction is high, especially overhead transmission line.90% power failure and fault disturbance occur in power distribution network according to statistics；It wherein searches simultaneously
Line fault point is excluded, an important factor for improving power supply quality is become.Using distribution automation terminal, (FTU(line feed terminals are set
It is standby) and DTU(switching station terminal equipment)) may be implemented backbone it is big segmentation, big branch fault section and isolation.But the party
Case investment is larger, and China distribution region is broad, is unfavorable for distribution automation all standing.National Energy Board can electric power [2015]
No. 290 files " distribution network construction transformation action plan " are distinctly claimed, from 2015-2020 power distribution automation coverage rate from current
20% reach 90% or more.The major product for supporting large scale covering is fault detector class product, is calculated from the upper data of planning
Learn that the demand of the five-year fault detector class product is no less than 3,000,000 sets.Therefore, portable two distant basic of economic, installation
Type distribution on-line monitoring becomes the major product for realizing the covering of large scale distribution automation with fault location terminal.
Existing aerial two distant basic model distribution terminals are mainly the following, and there are more defects, especially power supply
System more protrudes in terms of taking electricity, seriously affects products application.First is that solar energy takes electricity；Which is by rainy days, night and sky
Makings amount influences, and is easy to appear power-supply system and takes electric deficiency, can not support terminal long-play.Second is that CT induction takes electricity；It adopts
With electronic power switch, desirable electric electric current minimum at present is 10A, and more low current takes electricity cannot achieve, and electric current, which takes, electrocutes Qu Here
Design needs to break through, and electricity cannot be taken to automatically adjust and protect induction.Third is that built-in disposable nickel-metal hydride battery power supply, makes
Short with the service life, probe can not work after 3 ~ 4 years.Fourth is that high-voltage capacitance takes electricity or wirelessly takes electricity, it is derived from voltage sensor thinking, peace
Full property and energy transfer efficiency are difficult points, and are not suitable for livewire work installation.These defects have seriously affected distribution automation
The application effect of on-line monitoring and positioning, and then influence power supply reliability.
Therefore, the technological innovation of power system design is following key technology and development trend, and the prior art need
It improves.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of inductions of adaptive CT to take electricity
Power control system and its method are taken with to solve existing aerial two distant basic model distribution terminal power-supply systems there are electric current and electrocute area
It is excessive, and the problem of cannot automatically adjust and protect.
In order to achieve the above object, this invention takes following technical schemes:
A kind of adaptive CT induction takes the power control system of electricity, loads and connects with micropower comprising:
CT incudes electricity-fetching module, takes electricity to obtain alternating voltage for carrying out to preset range electric current；
Full-wave rectification block, for exporting DC voltage after carrying out full-wave rectification to alternating voltage；
Be self-regulated power protection module, for being charged according to DC voltage to built-in energy pond；Detect energy cell voltage
When greater than protection voltage, release to CT induction electricity-fetching module；When detecting energy cell voltage less than or equal to protection voltage, output
Energy cell voltage；
Energy collects control module, the power supply state for load according to the adjustment of the size of energy cell voltage to micropower with
The charged state of super capacitor.
The adaptive CT induction takes in the power control system of electricity, and the CT induction electricity-fetching module includes two semicircles
The iron core of ring body, two iron core closure one torus of composition；The winding being arranged on any iron core is the coil of nanocrystalline material, around
It draws two piece-root grafting line ends and connects full-wave rectification block in one end of group.
The adaptive CT induction takes in the power control system of electricity, and the interior circular diameter of the torus is 54.4mm,
Outside diameter is 80.6mm；A height of 12.6mm of semi-circular ring, the width of semi-circular ring are 13.1mm.
The adaptive CT induction takes in the power control system of electricity, is provided with and forbids on the iron core of the setting winding
Winding region.
The adaptive CT induction takes in the power control system of electricity, and the self-regulation power protection module includes first
Metal-oxide-semiconductor, diode, energy pond, first resistor and over-voltage control unit；
The source electrode of first metal-oxide-semiconductor connects the anode of the 2nd foot and diode of rectifier bridge by first resistor；Described two
The cathode connection energy of pole pipe collects control module, the one end in energy pond and the input terminal of over-voltage control unit；First metal-oxide-semiconductor
Grid connects the control terminal of over-voltage control unit, the other end and ground in the drain electrode connection energy pond of the first metal-oxide-semiconductor.
The described adaptive CT induction takes in the power control system of electricity, the over-voltage control unit include comparable chip,
Second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the second metal-oxide-semiconductor；
One end, one end of 3rd resistor and one end of the 5th resistance of the+IN foot connection second resistance of the comparable chip；
The other end, the one end in energy pond and one end of the 4th resistance of the VS foot connection second resistance of comparable chip；The OUT of comparable chip
Foot connects the other end, one end of the 6th resistance and the grid of the second metal-oxide-semiconductor of the other end of the 4th resistance, the 5th resistance；Compare
The other end and ground of the GND foot connection 3rd resistor of chip, the grid of the source electrode connection metal-oxide-semiconductor of the second metal-oxide-semiconductor, the second metal-oxide-semiconductor
Drain electrode the 7th resistance of connection one end, the other end of the 7th resistance connects the other end of the 6th resistance and the VS of comparable chip
Foot.
The adaptive CT induction takes in the power control system of electricity, and the over-voltage control unit further includes first capacitor
With the second capacitor；
The VS foot of one end connection comparable chip of the first capacitor, the other end ground connection of first capacitor, the second capacitor
One end connects the OUT foot of comparable chip and the grid of the second metal-oxide-semiconductor, the GND foot of the other end connection comparable chip of the second capacitor
The ground and.
The adaptive CT induction takes in the power control system of electricity, and the energy collects control module and includes:
Battery；
Super capacitor；
MPPT control unit, for judging the size of energy cell voltage and exporting corresponding control signal；
Buck unit, for carrying out boosting acquisition boost voltage according to corresponding control signal or being depressured
Voltage；
Power conversion unit supplies voltage to micropower load confession for output after carrying out voltage conversion to step-down voltage
Electricity, also acquisition charging voltage；And output power supply is electric after carrying out voltage conversion to boost voltage, cell voltage or capacitance voltage
It presses and gives micropower load supplying；
Backup power supply control unit, for exporting cell voltage to power conversion unit in battery power supply；
Charge and discharge control unit, for charging voltage to charge to super capacitor；And in super capacitor power supply, control is super
Grade capacitor electric discharge output capacitance voltage is to power conversion unit.
A kind of power control method for the power control system taking electricity using the adaptive CT induction comprising:
Step A, preset range electric current is carried out that electricity is taken to obtain alternating voltage, is exported after carrying out full-wave rectification to alternating voltage
DC voltage；
Step B, it is charged according to DC voltage to energy pond；When detecting energy cell voltage greater than protection voltage, CT is incuded
Electricity-fetching module is released；When detecting energy cell voltage less than or equal to protection voltage, energy cell voltage is exported；
Step C, the charging for the power supply state and super capacitor that micropower is loaded according to the adjustment of the size of energy cell voltage
State.
Compared to the prior art, adaptive CT induction provided by the invention takes the power control system of electricity, is incuded by CT
Electricity-fetching module carries out preset range electric current (3 ~ 630A) electricity is taken to obtain alternating voltage, and electric current can incude for 5A takes electricity to be expired
Electric energy needed for the distant basic model distribution terminal global function operation of foot aerial two, extends the service life of two distant basic model distribution terminals
And application range；Full-wave rectification block exports DC voltage after carrying out full-wave rectification to alternating voltage；The power that is self-regulated protects mould
Root tuber charges to built-in energy pond according to DC voltage；When detecting energy cell voltage greater than protection voltage, electric mould is taken to CT induction
Block is released；When detecting energy cell voltage less than or equal to protection voltage, energy cell voltage is exported；Energy collects control module root
According to the charged state of power supply state and super capacitor that the size adjustment of energy cell voltage loads micropower, take induction electric
Energy power maintains maximum output always, and electric energy is utilized, and reduces waste and fever；Power protection module be self-regulated to power supply
System high-current induction takes electricity or the moment impacts electric current such as lightning surge to automatically adjust and protect, can be automatically stored electric energy,
Switch energy.
Detailed description of the invention
Fig. 1 is the structural block diagram for the power control system Application Example that adaptive CT induction provided by the invention takes electricity.
Fig. 2 is the signal that adaptive CT induction provided by the invention takes CT induction electricity-fetching module in the power control system of electricity
Figure.
Fig. 3 is the size that adaptive CT induction provided by the invention takes CT induction electricity-fetching module in the power control system of electricity
Schematic diagram.
Fig. 4 is that adaptive CT induction provided by the invention takes CT induction electricity-fetching module, all-wave in the power control system of electricity
The circuit diagram of rectification module, the power protection module that is self-regulated.
Fig. 5 is the knot that adaptive CT induction provided by the invention takes energy collection control module in the power control system of electricity
Structure block diagram.
Fig. 6 is the power control method process for the power control system that adaptive CT induction provided by the invention takes electricity
Figure.
Specific embodiment
Induction cannot be carried out by low current for existing aerial two distant basic model distribution terminal power-supply systems takes electric acquisition
The problems such as global function runs required electric energy, seriously affects the service life of its product.The present invention provides a kind of adaptive CT sense
The power control system and its method that electricity should be taken are related to electromagnetic induction technology, power electronics control and measuring technique；Applied to line
Road load current is 3 ~ 600A, provides the electricity of working power for 10kV and 35k distribution line on-line monitoring and fault locator
Source system；With Power auto-adjustment and protection circuit, induction that can be reliable and stable in 3A ~ 630A current range takes electricity.
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, as follows in conjunction with drawings and embodiments to the present invention into
One step is described in detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Referring to Fig. 1, adaptive CT induction provided by the invention takes the power control system of electricity and micropower load to connect, including
CT incudes electricity-fetching module 10, full-wave rectification block 20, self-regulation power protection module 30 and energy and collects control module 40.It is described
CT induction electricity-fetching module 10, full-wave rectification block 20, self-regulation power protection module 30, energy are collected control module 40 and are successively connected
It connects.The CT induction electricity-fetching module 10 carries out preset range electric current (3A ~ 630A) electricity is taken to obtain alternating voltage (AC ±), electric current
As low as 5A, which can also incude, takes electricity to obtain the electric energy met needed for aerial two distant basic model distribution terminal global function is run.Full-wave rectification
Module 20 exports DC voltage V after carrying out full-wave rectification to alternating voltage.Power protection module 30 be self-regulated according to DC voltage V
It charges to built-in energy pond；When detecting protection voltage of the energy cell voltage DC greater than setting, in CT induction electricity-fetching module 10
Induction electricity taking coil released when threshold voltage (usually release to stopping)；It detects energy cell voltage DC and is less than or equal to protection
When voltage, energy cell voltage DC is exported.Energy is collected control module 40 and is adjusted according to the size of energy cell voltage DC to micropower
The charging shape of the power supply state and super capacitor (super capacitor is called electrochemical capacitor, farad capacitor) of load
State makes induction that electric energy power be taken to maintain maximum output always, and electric energy is utilized, and reduces waste and fever.
Referring to Figure 2 together and Fig. 3, the CT incude electricity-fetching module 10 i.e. current transformer.The CT of the present embodiment incudes
Electricity-fetching module 10 includes the iron core 110 of two semi-circular rings, and two iron core closures form a torus, the winding 120 on iron core
For the coil (i.e. induction electricity taking coil) of nanocrystalline material.The iron core coating, painting thickness are 0.3mm.The torus
Interior circular diameter d1 be 54.4mm, outside diameter d2 be 80.6mm；The high h of semi-circular ring is 12.6mm, and the wide w of semi-circular ring is
13.1mm.Coiling on only one iron core, preferable the number of turns are 600, and drawing two piece-root grafting line ends from one end of winding, (i.e. Fig. 2 is left
Two parallel lines on side) it is separately connected full-wave rectification block 20.And be provided on the iron core and forbid winding region 130, as shown in Figure 3
Shadow region.It is described that forbid winding region 130 include the first height H1(5mm positioned at semi-circular ring one end) region and
The second height H2(14mm of semi-circular ring the other end) region.Setting forbids winding region 130 to be more convenient user installation.This
The error of all sizes is ± 0.2mm in embodiment；The settings such as number of turns, winding area to iron core can be according to practical application
It is adjusted, herein with no restriction to it.
Two semi-circular rings can separate, and be closed permanent opening by fixing piece after torus is covered on cable.Electric current is mutual
By primary current among sensor, secondary winding can induce weak voltage, and it is whole that the wiring of secondary winding is terminated to all-wave
Flow module 20 is collected control module 40 using subsequent self-regulation power protection module 30 and energy and is handled, i.e., desirable
Obtain required supply voltage.It is selected by the material of the setting of above-mentioned size and coil, aerial two distant basic models can be realized in this way
Distribution terminal takes electricity to more low current (such as 5A), working power needed for meeting micro energy lose load, and the prior art can only be right
The low current of minimum 10A takes electricity.
Referring to Figure 4 together, the full-wave rectification block 20 is rectifier bridge, and Schottky two can be used in internal diode
Pole pipe or low-loss diode.The negative terminals of the 1st foot connection CT induction electricity-fetching module 10 of rectifier bridge, the 3rd foot of rectifier bridge
The positive terminals of CT induction electricity-fetching module 10 are connected, the 2nd foot of rectifier bridge connects self-regulation power protection module 30, rectifier bridge
4th foot ground connection.
The self-regulation power protection module 30 includes high-power the first controllable metal-oxide-semiconductor Q1(model of Low ESR
CSD18563Q5A), diode D, energy pond C0(capacitive energy pond), first resistor R1 and over-voltage control unit 310；Described
The anode that the source electrode of one metal-oxide-semiconductor Q1 passes through the 2nd foot and diode D of first resistor R1 connection rectifier bridge；The diode D's is negative
Pole connects energy and collects control module 40, one end of energy pond C0 and the input terminal in of over-voltage control unit 310；First metal-oxide-semiconductor
Q1 grid connection over-voltage control unit 310 control terminal ct, the first metal-oxide-semiconductor Q1 drain electrode connection energy pond C0 the other end and
Ground.
The DC voltage V that full-wave rectification block 20 exports charges to energy pond C0.Assuming that the protection voltage of energy pond C0 is
U0, voltage rating Ut.When over-voltage control unit 310 detects energy cell voltage DC less than or equal to protection voltage, letter is closed in output
Number control the first metal-oxide-semiconductor Q1 cut-off, energy cell voltage DC to subsequent energy collect control module 40.Pressure control unit is served as
When 310 detection energy cell voltage DC are greater than the protection voltage U0 of setting, output open signal controls the first metal-oxide-semiconductor Q1 conducting, then
The output end of full-wave rectification block 20 is shorted.DC voltage V (is equivalent to the electricity on coil with being released to across energy pond C0
Pressure is released, and is no longer charged to energy pond C0), meanwhile, the electric energy on the C0 of energy pond is let out also by over-voltage control unit 310
It puts, energy cell voltage DC decline.
It is also possible to charge to energy pond C0 due to subsequent, energy cell voltage DC must be made to drop to when reaching threshold voltage
Stopping is released.Then the over-voltage control unit 310, which also detects, presses DC to drop to output shutdown signal control when reaching threshold voltage
First metal-oxide-semiconductor Q1 cut-off, short circuit, which disappears, to be stopped releasing.
In the present embodiment, over-voltage control unit 310 is made of low power consumption voltage monitoring element and comparison control circuit, specifically
Include: comparable chip U(model LT6703IDC-3#TRMPBF), second resistance R2,3rd resistor R3, the 4th resistance R4,
Five resistance R5, the 6th resistance R6, the 7th resistance R7 and the second metal-oxide-semiconductor Q2；+ IN the foot of the comparable chip U connects second resistance
One end of R2, one end of 3rd resistor R3 and the 5th resistance R5 one end；The VS foot connection second resistance R2's of comparable chip U is another
One end (i.e. the input terminal in of over-voltage control unit 310), one end of energy pond C0 and one end of the 4th resistance R4；Comparable chip U
OUT foot connect the 4th resistance R4 the other end, the other end of the 5th resistance R5, one end of the 6th resistance R6 and the second metal-oxide-semiconductor
The grid of Q2；The other end and ground of the GND foot connection 3rd resistor R3 of comparable chip U, source electrode (the i.e. over-voltage of the second metal-oxide-semiconductor Q2
The control terminal ct of control unit 310) connection metal-oxide-semiconductor Q1 grid, the second metal-oxide-semiconductor Q2 drain electrode connection the 7th resistance R7 one
The other end at end, the 7th resistance R7 connects the other end of the 6th resistance R6 and the VS foot of comparable chip U.
Wherein, the second metal-oxide-semiconductor Q2 is NMOS tube, and comparable chip U judges that energy cell voltage DC is less than or equal to protection electricity
When pressing U0, output low level control the second metal-oxide-semiconductor Q2 cut-off, the source electrode of the second metal-oxide-semiconductor Q2 is equivalent to output shutdown signal (no electricity
Pressure, is equivalent to low level).When comparable chip U judges that energy cell voltage DC is greater than protection voltage U0, output high level control the
Two metal-oxide-semiconductor Q2 conducting, the open signal of the source electrode output high level of the second metal-oxide-semiconductor Q2.
In further embodiment, the over-voltage control unit 310 further includes first capacitor C1 and the second capacitor C2；Described
The VS foot of one end connection comparable chip U of one capacitor C1, the other end ground connection of first capacitor C1, one end connection of the second capacitor C2
The grid of the OUT foot of comparable chip U and the second metal-oxide-semiconductor Q2, the second capacitor C2 the other end connection comparable chip U GND foot and
Ground.The first capacitor C1 can be filtered energy cell voltage DC, and the second metal-oxide-semiconductor Q2 is made to export stable height electricity when being connected
It is flat.Second capacitor C2 is filtered the grid voltage of the second metal-oxide-semiconductor Q2, keeps the second metal-oxide-semiconductor Q2 more stable when being connected.
Please refer to fig. 5, it includes MPPT(Maximum Power Point that the energy, which collects control module 40,
Tracking, MPPT maximum power point tracking) control unit 41, buck unit 42, power conversion unit 43, backup power supply control
Unit 44, charge and discharge control unit 45, the battery (nickel-metal hydride battery) 46 of 3.3V and the super capacitor 47 of 5.5V.The MPPT control is single
First 41 built-in voltage comparators, are compared to carry out subsequent buck adjustment by the size to energy cell voltage DC, can begun
Maintain CT inductive output near maximum power point eventually, whole improve takes electric energy power.The MPPT control unit 41 is for judging
The size of energy cell voltage simultaneously exports corresponding control signal.Buck unit 42 according to corresponding control signal for being risen
Pressure obtains boost voltage or decompression obtains step-down voltage.Power conversion unit is used for defeated after step-down voltage progress voltage conversion
Micropower load supplying is supplied voltage to out, also acquisition charging voltage；And to boost voltage, cell voltage or capacitance voltage
Output supplies voltage to micropower load supplying after carrying out voltage conversion.Backup power supply control unit is used in battery power supply,
Cell voltage is exported to power conversion unit.Charge and discharge control unit, for charging voltage to charge to super capacitor；And super
When grade capacitances to supply power, control super capacitor electric discharge output capacitance voltage is to power conversion unit.
Specifically: when MPPT control unit 41 judges that energy cell voltage DC is greater than upper limit threshold values, control buck unit
42 decompressions obtain step-down voltage.Power conversion unit 43 carries out voltage conversion (being converted to) to step-down voltage and exports supply voltage afterwards
Micropower load supplying is given, also output charging voltage is charged by charge and discharge control unit 45 to super capacitor.
When MPPT control unit 41 judges that energy cell voltage DC is less than lower limit threshold values, the control boosting of buck unit 42 is obtained
Obtain boost voltage.Output supplies voltage to micropower load confession after power conversion unit 43 carries out voltage conversion to boost voltage
Electricity only powers do not charge to super capacitor at this time.
The battery 46 is used as backup power supply, when needing battery to power, exports battery by backup power supply control unit 44
Voltage is converted to through power conversion unit 43 and supplies voltage to micropower load supplying.When not needing battery power supply, backup power supply
The output channel of the disconnection battery 46 of control unit 44.
When super capacitor being needed to power, charge and discharge control unit 45 controls super capacitor 47 and discharges, through power conversion unit 43
It is converted to and supplies voltage to micropower load supplying.Charge and discharge control unit 45 automatically adjusts charging current method using hardware type,
The charging current to super capacitor can be automatically adjusted, most according to line load size of current and system micropower load state
Big degree improves capacity usage ratio, and the use of balanced energy reduces energy fever waste.
In the specific implementation, the energy, which collects control module 40, can be used the intelligent integrated formula energy of model ADP5091
Amount acquisition power management chip.
The power control system of electricity is taken based on above-mentioned adaptive CT induction, the present invention also provides a kind of inductions of adaptive CT
The power control method of electricity is taken, referring to Figure 6 together, the power control method includes:
S100, preset range electric current is carried out electricity is taken to obtain alternating voltage, is exported after carrying out full-wave rectification to alternating voltage
DC voltage；
S200, it is charged according to DC voltage to energy pond；When detecting energy cell voltage greater than protection voltage, CT induction is taken
Electric module is released；When detecting energy cell voltage less than or equal to protection voltage, energy cell voltage is exported；
The charging shape of S300, micropower is loaded according to the adjustment of the size of energy cell voltage power supply state and super capacitor
State.
In conclusion adaptive CT induction of the invention takes the power control system of electricity, it is distant basic for existing aerial two
The power-supply system defect status of type distribution terminal is collected CT and electric pressure point of maximum efficiency is taken to track using multichannel power management system
(MPPT), battery, super capacitor have self-regulation power protection circuit, the power supply that electric energy is automatically stored, switches energy in one
Electric control function is taken, electricity can be continuously taken within the scope of route 3A ~ 630A, route 5A can meet power distribution network on-line monitoring and failure
Energy needed for positioning acquisition unit operates normally, to effectively extend life of product, greatly improves two without battery
The working power reliability of distant distribution power automation terminal meets the working power demand of aerial two distant basic model distribution terminals.
For line fault overcurrent and lightning impulse, adaptively released by the power protection module that is self-regulated anti-
Shield, to realize that induction takes electricity to automatically adjust and protect.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (8)
1. a kind of adaptive CT induction takes the power control system of electricity, loads and connects with micropower characterized by comprising
CT incudes electricity-fetching module, takes electricity to obtain alternating voltage for carrying out to preset range electric current；
Full-wave rectification block, for exporting DC voltage after carrying out full-wave rectification to alternating voltage；
Be self-regulated power protection module, for being charged according to DC voltage to built-in energy pond；Detection energy cell voltage is greater than
When protecting voltage, release to CT induction electricity-fetching module；When detecting energy cell voltage less than or equal to protection voltage, energy is exported
Cell voltage；
Energy collects control module, power supply state for being loaded according to the adjustment of the size of energy cell voltage to micropower and super
The charged state of capacitor；
The energy collects control module
Battery；
Super capacitor；
MPPT control unit, for judging the size of energy cell voltage and exporting corresponding control signal；
Buck unit, for being carried out according to corresponding control signal, boosting obtains boost voltage or decompression obtains step-down voltage；
Power conversion unit supplies voltage to micropower load supplying for output after carrying out voltage conversion to step-down voltage, also
Obtain charging voltage；And output after the progress voltage conversion of boost voltage, cell voltage or capacitance voltage is supplied voltage to micro-
Power termination power supply；
Backup power supply control unit, for exporting cell voltage to power conversion unit in battery power supply；
Charge and discharge control unit, for charging voltage to charge to super capacitor；And in super capacitor power supply, control super electricity
Discharge capacitor output capacitance voltage is to power conversion unit.
2. the power control system that adaptive CT induction according to claim 1 takes electricity, which is characterized in that the CT induction
Electricity-fetching module includes the iron core of two semi-circular rings, two iron core closure one torus of composition；The winding being arranged on any iron core
For the coil of nanocrystalline material, one end of winding draws two piece-root grafting line ends and connects full-wave rectification block.
3. the power control system that adaptive CT induction according to claim 2 takes electricity, which is characterized in that the torus
Interior circular diameter be 54.4mm, outside diameter 80.6mm；A height of 12.6mm of semi-circular ring, the width of semi-circular ring are
13.1mm。
4. the power control system that adaptive CT according to claim 2 induction takes electricity, which is characterized in that the setting around
It is provided on the iron core of group and forbids winding region.
5. the power control system that adaptive CT induction according to claim 1 takes electricity, which is characterized in that the self-regulation
Power protection module includes the first metal-oxide-semiconductor, diode, energy pond, first resistor and over-voltage control unit；
The source electrode of first metal-oxide-semiconductor connects the anode of the 2nd foot and diode of rectifier bridge by first resistor；The diode
Cathode connection energy collect control module, the one end in energy pond and the input terminal of over-voltage control unit；The grid of first metal-oxide-semiconductor
Connect the control terminal of over-voltage control unit, the other end and ground in the drain electrode connection energy pond of the first metal-oxide-semiconductor.
6. the power control system that adaptive CT induction according to claim 5 takes electricity, which is characterized in that described excessively voltage-controlled
Unit processed includes comparable chip, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and
Two metal-oxide-semiconductors；
One end, one end of 3rd resistor and one end of the 5th resistance of the+IN foot connection second resistance of the comparable chip；Compare
The other end, the one end in energy pond and one end of the 4th resistance of the VS foot connection second resistance of chip；The OUT foot of comparable chip connects
Connect the other end of the 4th resistance, the other end, one end of the 6th resistance and the grid of the second metal-oxide-semiconductor of the 5th resistance；Comparable chip
GND foot connection 3rd resistor the other end and ground, the source electrode of the second metal-oxide-semiconductor connects the grid of the first metal-oxide-semiconductor, the second metal-oxide-semiconductor
Drain electrode the 7th resistance of connection one end, the other end of the 7th resistance connects the other end of the 6th resistance and the VS of comparable chip
Foot.
7. the power control system that adaptive CT induction according to claim 6 takes electricity, which is characterized in that described excessively voltage-controlled
Unit processed further includes first capacitor and the second capacitor；
The VS foot of one end connection comparable chip of the first capacitor, the other end ground connection of first capacitor, one end of the second capacitor
Connect the OUT foot of comparable chip and the grid of the second metal-oxide-semiconductor, the GND foot and ground of the other end connection comparable chip of the second capacitor.
8. a kind of power control method for the power control system that electricity is taken using adaptive CT described in claim 1 induction,
It is characterized in that, comprising:
Step A, preset range electric current is carried out that electricity is taken to obtain alternating voltage, exports direct current after carrying out full-wave rectification to alternating voltage
Voltage；
Step B, it is charged according to DC voltage to energy pond；When detecting energy cell voltage greater than protection voltage, electricity is taken to CT induction
Module is released；When detecting energy cell voltage less than or equal to protection voltage, energy cell voltage is exported；
Step C, the charged state for the power supply state and super capacitor that micropower is loaded according to the adjustment of the size of energy cell voltage.
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| CN107086659A (en) * | 2017-05-05 | 2017-08-22 | 国网信息通信产业集团有限公司 | The power supply unit of sensing device built in charging equipment |
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| CN109061389A (en) * | 2018-09-05 | 2018-12-21 | 北京国网富达科技发展有限责任公司 | Control method, controller, fault section diagnosis method, apparatus and system |
| CN109638898B (en) * | 2018-12-27 | 2022-05-31 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-speed railway contact net CT electricity taking device and method |
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| CN112104022B (en) * | 2020-08-31 | 2022-05-06 | 浙江树人学院（浙江树人大学） | CT power taking power supply |
| CN112701796A (en) * | 2020-12-21 | 2021-04-23 | 青岛鼎信通讯股份有限公司 | Fault indicator power management circuit based on CT energy taking |
| CN113824217A (en) * | 2021-01-12 | 2021-12-21 | 青岛鼎信通讯股份有限公司 | CT power taking system based on maximum power point tracking |
| CN113721108B (en) * | 2021-07-13 | 2024-06-18 | 深圳市科陆电子科技股份有限公司 | Acquisition equipment, low-power consumption control method and transient wave recording type fault indicator |
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