CN106160259A - Micro Energy Lose power-supply system and method for work based on the sensing power taking of line load electric current - Google Patents
Micro Energy Lose power-supply system and method for work based on the sensing power taking of line load electric current Download PDFInfo
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- CN106160259A CN106160259A CN201610620736.8A CN201610620736A CN106160259A CN 106160259 A CN106160259 A CN 106160259A CN 201610620736 A CN201610620736 A CN 201610620736A CN 106160259 A CN106160259 A CN 106160259A
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- power taking
- power
- unit
- electric current
- supply system
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
The invention discloses the Micro Energy Lose power-supply system based on the sensing power taking of line load electric current and method of work, including the CT sensing power taking unit, rectification unit, overpower protection circuit and the electric energy collecting circuit that are sequentially connected with；Described overpower protection circuit includes controllable silicon, described silicon controlled one end is connected with the first output of rectification unit and the positive pole of diode, the other end is connected with the second output of rectification unit, shunt capacitance energy pond, overpower protecting, monitoring unit and described electric energy collecting circuit between the negative pole of described diode and the second output of rectification unit, second output head grounding of rectification unit, described silicon controlled control end is connected with described overpower protecting, monitoring unit.Economical and practical, use multichannel power management system, integrate CT power taking pressure point of maximum efficiency tracking, backup battery, super capacitance management, intelligent power switching management.
Description
Technical field
The present invention relates to sensing power taking technology, Power Electronic Technique, energy management technical field, particularly relate to a kind of based on
The Micro Energy Lose power-supply system of line load electric current sensing power taking and method of work.
Background technology
There is bigger difference with developed country in controller switching equipment, grid structure, the method for operation and management in China's power distribution network
Away from grid structure is complicated weak, and probability of malfunction is high, and power failure and the fault disturbance of 90% occurs in power distribution network according to statistics.Utilize
FTU (DTU) or main station system realize the big segmentation of backbone, the fault section and isolation of big branch has become a kind of effective
Solution, but program investment is relatively big, and China's distribution region is broad, is unfavorable for distribution automation all standing；State's net is sent out
Exhibition portion proposes the object of planning that the year two thousand twenty realizes distribution all standing, and the major product of support all standing is therefore refers to class product, from rule
Draw above data reckoning to learn the five-year therefore refer to that product consumption is no less than 5,000,000 sets.Therefore, utilize economy, portable two are installed
Distant basic model distribution terminal realizes that all standing has become and knows together in the industry, but existing built on stilts two distant basic model distribution terminals exist
Many inadequate natural endowment problem particularly power-supply systems, have a strong impact on products application, current power-supply system mainly have following several greatly
Design:
1) solar energy power taking, which is affected by overcast and rainy and air quality, easily occurs that power-supply system power taking is not enough, nothing
Method supports terminal long-play.
2) CT sensing power taking, uses electronic power switch, and small area analysis power taking dead band and thermal design are presently required and realize matter
Break through；
3) built-in not rechargeable nickel-hydrogen battery, it is impossible to realize that global function is run, and after 3～4 years, probe cannot work.
4) high-voltage capacitance power taking or wireless power taking, stems from voltage sensor thinking, and security and energy transfer efficiency are difficult
Point, and be not suitable for livewire work installation.
Drawbacks described above to realizing distribution automation all standing, and then will promote power supply reliability and propose challenge, therefore, and electricity
The innovation of origin system method for designing will be following key technology and development trend.
Content of the invention
The purpose of the present invention be contemplated to solve the problems referred to above, provide a kind of based on line load electric current sensing power taking micro-
Power consumption power-supply system and method for work, economical and practical, use multichannel power management system, collection CT power taking pressure point of maximum efficiency with
Track, backup battery, super capacitance management are in one, and intelligent power switching manages.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of Micro Energy Lose power-supply system based on the sensing power taking of line load electric current, including the CT sensing power taking being sequentially connected with
Unit, rectification unit, overpower protection circuit and electric energy collecting circuit；
Described overpower protection circuit includes controllable silicon, the first output of described silicon controlled one end and rectification unit and
The positive pole of diode connects, and the other end is connected with the second output of rectification unit, the negative pole of described diode and rectification unit
The second output between shunt capacitance energy pond, overpower protecting, monitoring unit and described electric energy collecting circuit, rectification unit
The second output head grounding, described silicon controlled control end be connected with described overpower protecting, monitoring unit.
Described overpower protecting, monitoring unit includes interconnective voltage sample circuit and comparator chip, described comparison
The output of device chip connects described silicon controlled control end after connecting metal-oxide-semiconductor.
Series resistance R1 and R2 between the negative pole of described diode and the second output of rectification unit, resistance R1's and R2
Common port connects the positive input terminal of described comparator chip, and the negative input end of described comparator chip is connected with reset terminal, resets
Ground connection after end series resistance, meets electric capacity C2 simultaneously and is followed by the second output of described rectification unit, the output of comparator chip
Connecing the gate pole of metal-oxide-semiconductor, being connected resistance between the source electrode of metal-oxide-semiconductor and the negative pole of diode, the drain electrode of metal-oxide-semiconductor connects described silicon controlled
Control end.
Described electric energy collecting circuit includes BOOST circuit and the linear direct current regulated power supply of series connection, and described linear DC is steady
Voltage source is connected with super capacitor management of charging and discharging unit, and super capacitor management of charging and discharging unit is connected with super capacitor；Described
Linear direct current regulated power supply is also connected with back-up source administrative unit, and back-up source administrative unit is connected with back-up source.
Described BOOST circuit is also connected with CT MPPT maximum power point tracking controller.
Described super capacitor is 5.5V super capacitor.
Described back-up source uses 3.3V Ni-MH battery.
A kind of Micro Energy Lose power-supply system method of work based on the sensing power taking of line load electric current, including,
Carry out rectification after CT sensing power taking unit power taking, by electric energy collecting circuit, electric energy is collected after rectification, crosses work(
Rate protection circuit guarantees that system will not overpower work；
When the capacitive energy cell voltage in overpower protection circuit is more than setting voltage U0, overpower protecting, monitoring unit
Sending control signal makes controlled silicon conducting, rectification unit short circuit after controlled silicon conducting, and electric current is released directly across capacitive energy pond.
, the CT MPPT maximum power point tracking controller in described electric energy collecting circuit, by control power taking voltage, maintains all the time
CT sensing power taking unit sensing output is near maximum power point.
When capacitive energy cell voltage is more than setting voltage value Un2, starts and back-up source is charged, otherwise close；Work as electricity
When holding energy cell voltage less than Un3, back-up source does not start work.
Beneficial effects of the present invention:
(1) present invention is economical and practical, uses multichannel power management system, and collection CT power taking pressure point of maximum efficiency is followed the tracks of, standby
Battery, super capacitance management are in one, and intelligent power switching manages；Built-in disposable Large Copacity, long-life Ni-MH battery
With high-performance charge super electric capacity, can continuous power taking in the range of circuit 3～630A, circuit 5A can meet product total power fortune
OK, it is not necessary to by battery, thus effectively life of product is extended.
(2) for line fault overcurrent and lightning impulse, the invention provides one and utilize self adaptation to release protection
Thinking, use the monitoring of energy cell voltage to realize that energy is released with electronic power switch control, thus realize that whole power taking is electric
The protection on road.
Brief description
Fig. 1 is the fundamental system block diagram of the present invention.
The Micro Energy Lose power-supply system theory diagram that Fig. 2 provides for the present invention.
The sensing power taking CT structural representation that Fig. 3 provides for the present invention.
Fig. 4 is the fundamental diagram of the overpower protection circuit constructed by the present invention.
The electric energy collecting circuit theory diagram that Fig. 5 provides for the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1-2, the Micro Energy Lose power-supply system based on the sensing power taking of line load electric current, comprising: CT senses power taking
Unit the 1st, rectification unit the 2nd, overpower protection circuit, electric energy collecting circuit；Electric energy collecting circuit is micropower load supplying；Its
In: CT sensing power taking unit 1 is sequentially connected with rectification unit the 2nd, overpower protection circuit, electric energy collecting circuit, micropower load.
Rectification unit 2 uses full wave rectifying unit.
As in figure 2 it is shown, overpower protection circuit 3 includes: low-resistance high-power silicon controlled rectifier 3 (metal-oxide-semiconductor), diode the 4th, electric capacity energy
Amount pond the 5th, overpower protecting, monitoring unit.Wherein 2-1,2-3 of CT sensing power taking unit 1 two second part and full wave rectifying unit 2
Pin connects；First output 2-2 of full wave rectifying unit 2, the second output 2-4 and the two ends of low-resistance high-power silicon controlled rectifier 3
Connect respectively；Diode 4 is serially connected with on circuit；One end, capacitive energy pond 5 is connected with diode 4, one end and full-wave rectification bridge 2-1
Pin connects；Overpower protecting, monitoring unit and capacitive energy pond 5 simultaneously connect, and it is high-power with low-resistance controlled to draw control signal wire
The 3-3 pin of silicon 3 connects；Electric energy collecting circuit is connected to two ends, capacitive energy pond 5.
Overpower protection process includes:
Known described capacitive energy pond setting voltage U0, rated voltage Ut, and detect capacitive energy cell voltage；
When capacitive energy cell voltage is less than setting voltage U0, overpower protecting, monitoring unit is failure to actuate；
When capacitive energy cell voltage is more than setting voltage U0, overpower protecting, monitoring unit then sends control signal automatically
To low-resistance high-power silicon controlled rectifier, short circuit after CT rectification subsequently, electric current is released directly across energy pond.
CT senses power taking unit 1, and coil uses nanocrystalline material, and double opening structures, initial permeability is low, power taking ability
By force, its structural representation is as shown in Figure 3；
Full wave rectifying unit 2 uses the LT4320-1 chip of Linear, built-in synchronous damage-free circuit and diode；
Low-resistance high-power silicon controlled rectifier the 3rd, diode the 4th, capacitive energy pond the 5th, overpower protecting, monitoring unit built work(jointly
Rate guard system circuit, CT sensing power taking unit 1 charges to capacitive energy pond 5 after sensing power taking, overpower protecting, monitoring unit
Low power consumption voltage is monitored that element (voltage sampling circuit) and comparator form, when capacitive energy pond 5 voltage is more than a certain valve
During value Un1, overpower protecting, monitoring unit then automatically sends and controls signal to low-resistance high-power silicon controlled rectifier 3, and CT sensing subsequently takes
Short circuit after electric unit 1 power taking rectification, electric current releases directly across capacitive energy pond 5, and fundamental diagram is as shown in Figure 4.
As shown in Figure 4, overpower protecting, monitoring unit uses comparator chip U1, and model is LT1440, bearing of diode
Series resistance R1 and R2 between pole and the second output 2-4 of rectification unit, the common port of resistance R1 and R2 connects comparator core
The positive input terminal IN+ of piece U1, the negative input end IN-of described comparator chip U1 are connected with reset terminal REF, reset terminal series resistance
It is grounded after R3 and R4, connect ground connection after electric capacity C2, the common port of HTST terminating resistor R3 and R4 of comparator chip U1 simultaneously, compare
The output OUT of device chip U1 connects the gate pole of metal-oxide-semiconductor Q2, is connected resistance between the source electrode of metal-oxide-semiconductor Q2 with the negative pole of diode D1
R5, the drain electrode of metal-oxide-semiconductor Q2 connects the control end of described controllable silicon Q1, and the source electrode of controllable silicon Q1 connects the 2-2 end of rectification unit, controllable silicon
The grounded drain of Q1.
Electric energy collecting circuit, by BOOST circuit 7-1, CT MPPT maximum power point tracking controller, (CT-MPPT is controlled as shown in Figure 5
Device processed) 7-2, super capacitor management of charging and discharging unit 7-3, linear direct current regulated power supply 7-4, back-up source administrative unit 7-5, after
Stand-by power source 7-6, super capacitor 7-7 form.Described super capacitor is 5.5V super capacitor.Described back-up source uses 3.3V ni-mh
Battery.
Wherein CT-MPPT controller 7-2, built-in voltage comparator, by control power taking voltage, maintain CT sensing to take all the time
Electric unit 1 sensing output is near maximum power point, and entirety improves power taking ability: when capacitive energy pond 5 voltage is more than certain threshold values
During Un2, start back-up source, otherwise close；Back-up source is set with minimum startup supply voltage Un3, when capacitive energy pond 5 electricity
Forcing down when Un3, this power supply does not start work, it is ensured that power taking CT secondary side UPower takingVoltage is higher.Super capacitor management of charging and discharging list
Unit 7-3, uses hardware type to automatically adjust charging current method, can load according to line load size of current and system micropower
Situation, automatically adjusts the charging current to super capacitor, at utmost improves capacity usage ratio, reduces energy heating waste.
A kind of Micro Energy Lose power-supply system method of work based on the sensing power taking of line load electric current, including,
Carry out rectification after CT sensing power taking unit power taking, by electric energy collecting circuit, electric energy is collected after rectification, crosses work(
Rate protection circuit guarantees that system will not overpower work；
When the capacitive energy cell voltage in overpower protection circuit is more than setting voltage U0, overpower protecting, monitoring unit
Sending control signal makes controlled silicon conducting, rectification unit short circuit after controlled silicon conducting, and electric current is released directly across capacitive energy pond.
CT MPPT maximum power point tracking controller in described electric energy collecting circuit, by control power taking voltage, maintains CT all the time
Sensing power taking unit sensing output is near maximum power point.
When capacitive energy cell voltage is more than setting voltage value Un2, starts and back-up source is charged, otherwise close；Work as electricity
When holding energy cell voltage less than Un3, back-up source does not start work.
To sum up, the power-supply system of the present invention, uses multichannel power management system, and collection CT power taking pressure point of maximum efficiency is followed the tracks of
(CT-MPPT), back-up source, super capacitance management are in one, intelligent power switching management；Built-in disposable Large Copacity, length
The lithium thionyl chloride cell in life-span and high-performance charge super electric capacity, can in the range of circuit 3～630A continuous power taking, circuit 5A
Product capacity operation can be met, it is not necessary to by battery, thus effectively extend life of product, greatly improve two distant distribution certainly
The accommodation of dynamicization terminal.
Although the above-mentioned detailed description of the invention to the present invention for the accompanying drawing that combines is described, but not protects model to the present invention
The restriction enclosed, one of ordinary skill in the art should be understood that, on the basis of technical scheme, those skilled in the art are not
Need to pay the various modification that creative work can make or deformation still within protection scope of the present invention.
Claims (10)
1. the Micro Energy Lose power-supply system based on the sensing power taking of line load electric current, is characterized in that, including the CT being sequentially connected with
Sensing power taking unit, rectification unit, overpower protection circuit and electric energy collecting circuit；
Described overpower protection circuit includes the first output and two poles of controllable silicon, described silicon controlled one end and rectification unit
The positive pole of pipe connects, and the other end is connected with the second output of rectification unit, the of the negative pole of described diode and rectification unit
Shunt capacitance energy pond, overpower protecting, monitoring unit and described electric energy collecting circuit between two outputs, the of rectification unit
Two output head groundings, described silicon controlled control end is connected with described overpower protecting, monitoring unit.
2. as claimed in claim 1 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
State overpower protecting, monitoring unit and include interconnective voltage sample circuit and comparator chip, described comparator chip defeated
Go out end and connect described silicon controlled control end after connecting metal-oxide-semiconductor.
3. as claimed in claim 2 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
Stating series resistance R1 and R2 between the negative pole of diode and the second output of rectification unit, the common port of resistance R1 and R2 connects
The positive input terminal of described comparator chip, the negative input end of described comparator chip is connected with reset terminal, reset terminal series resistance
Rear ground connection, meets electric capacity C2 simultaneously and is followed by the second output of described rectification unit, the door of the output termination metal-oxide-semiconductor of comparator chip
Pole, is connected resistance between the source electrode of metal-oxide-semiconductor and the negative pole of diode, the drain electrode of metal-oxide-semiconductor connects described silicon controlled control end.
4. as claimed in claim 1 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
State electric energy collecting circuit and include BOOST circuit and the linear direct current regulated power supply of series connection, described linear direct current regulated power supply with super
Level capacitor charge and discharge administrative unit connects, and super capacitor management of charging and discharging unit is connected with super capacitor；Described linear DC is steady
Voltage source is also connected with back-up source administrative unit, and back-up source administrative unit is connected with back-up source.
5. as claimed in claim 4 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
State BOOST circuit to be also connected with CT MPPT maximum power point tracking controller.
6. as claimed in claim 4 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
Stating super capacitor is 5.5V super capacitor.
7. as claimed in claim 4 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system, it is characterized in that, institute
State back-up source and use 3.3V Ni-MH battery.
8. the Micro Energy Lose power-supply system method of work based on the sensing power taking of line load electric current, is characterized in that, including,
Carrying out rectification after CT sensing power taking unit power taking, being collected electric energy by electric energy collecting circuit after rectification, overpower is prevented
Protection circuit guarantees that system will not overpower work；
When the capacitive energy cell voltage in overpower protection circuit is more than setting voltage U0, overpower protecting, monitoring unit sends
Control signal makes controlled silicon conducting, rectification unit short circuit after controlled silicon conducting, and electric current is released directly across capacitive energy pond.
9. as claimed in claim 8 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system method of work, its
Feature is, the CT MPPT maximum power point tracking controller in described electric energy collecting circuit, by control power taking voltage, maintains CT all the time
Sensing power taking unit sensing output is near maximum power point.
10. as claimed in claim 8 a kind of based on line load electric current sensing power taking Micro Energy Lose power-supply system method of work, its
Feature is, when capacitive energy cell voltage is more than setting voltage value Un2, starts and charges back-up source, otherwise close；Work as electric capacity
When energy cell voltage is less than Un3, back-up source does not start work.
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| CN201610620736.8A CN106160259B (en) | 2016-07-29 | 2016-07-29 | Micro-power-consumption power supply system based on line load current induction electricity taking and working method |
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| CN201610620736.8A CN106160259B (en) | 2016-07-29 | 2016-07-29 | Micro-power-consumption power supply system based on line load current induction electricity taking and working method |
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| CN106410946A (en) * | 2016-12-01 | 2017-02-15 | 威胜电气有限公司 | Power supply circuit applied to distribution line fault location device and power supply method thereof |
| CN108593993A (en) * | 2018-07-03 | 2018-09-28 | 深圳市惠立智能电力科技有限公司 | Induction based on line load electric current takes electrical measuring systems |
| CN109638981A (en) * | 2019-01-09 | 2019-04-16 | 武汉理工大学 | Antenna Type sensing electricity getting device |
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| CN106160150A (en) * | 2016-08-24 | 2016-11-23 | 深圳市惠立智能电力科技有限公司 | The power control system of a kind of adaptive CT sensing power taking and method thereof |
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| CN106410946A (en) * | 2016-12-01 | 2017-02-15 | 威胜电气有限公司 | Power supply circuit applied to distribution line fault location device and power supply method thereof |
| CN106410946B (en) * | 2016-12-01 | 2023-05-30 | 威胜能源技术股份有限公司 | Power supply circuit for distribution line fault positioning device and power supply method thereof |
| CN108593993A (en) * | 2018-07-03 | 2018-09-28 | 深圳市惠立智能电力科技有限公司 | Induction based on line load electric current takes electrical measuring systems |
| CN109638981A (en) * | 2019-01-09 | 2019-04-16 | 武汉理工大学 | Antenna Type sensing electricity getting device |
| CN109936192A (en) * | 2019-03-26 | 2019-06-25 | 深圳市赛飞奇光子技术有限公司 | A kind of circuit structure powered to detector for electric fire protection |
| CN111917169A (en) * | 2020-05-27 | 2020-11-10 | 山东信通电子股份有限公司 | Power transmission line fault monitoring method and device based on dynamic electricity taking |
| CN111917169B (en) * | 2020-05-27 | 2022-02-15 | 山东信通电子股份有限公司 | Power transmission line fault monitoring method and device based on dynamic electricity taking |
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