CN105656063B - A kind of adaptive energy taking device and method - Google Patents
A kind of adaptive energy taking device and method Download PDFInfo
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- CN105656063B CN105656063B CN201410734945.6A CN201410734945A CN105656063B CN 105656063 B CN105656063 B CN 105656063B CN 201410734945 A CN201410734945 A CN 201410734945A CN 105656063 B CN105656063 B CN 105656063B
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Abstract
The invention discloses a kind of adaptive energy taking devices of power grid, it includes current transformer, magnetic linkage by-pass unit, taking energy unit, energy-storage units, output control unit and adaptive process monitoring unit, requirement which reduce energy taking device to power line current, it can be according to the energy size of energy-storage units, the adaptive switching between different working modes is quickly carried out, taking can be efficient；The invention also discloses a kind of power grids adaptively to take energy method, this method to monitor the energy of energy-storage units in real time in energy taking device equipped with adaptive process monitoring unit, energy needed for the energy of energy-storage units and rear class DC load is compared, judge the operating mode of energy taking device, the opening and closing of magnetic linkage by-pass unit and output control unit are controlled by adaptive process monitoring unit, to realize the switching of different working modes, it is taken in energy technology with solving existing power line, it can not work under power line low current, problem that can be superfluous is taken under high current, avoid security risk.
Description
Technical field
The invention belongs to alternating current net side energy scavenging techniques field more particularly to a kind of adaptive energy taking device of power grid and
Method.
Background technology
The sensing device of existing intelligent grid, if on overhead line, due to Insulation Problems, it is difficult to use routine
Power supply.It can be the relatively good method for solving this kind of device power supply to be taken using current transformer self-induction, and dress on the one hand can be achieved
Self-powered is set, on the other hand accomplishes device and power line equipotential, solves Insulation Problems, while facilitating installation.
Since the variation range of electric current on power line is bigger, current transformer self-induction is caused to take energy method technically
There are no small difficulties, are mainly reflected in, and when power line current is smaller, secondary winding in current transformer exports finite energy,
Current transformer is leaned on to obtain the energy for making late-class circuit work enough, it is necessary to increase the volume of current transformer, this will cause
The volume and weight of entire electricity getting device greatly increases, and the safety for making whole device be mounted on overhead line is dropped significantly
It is low, or late-class circuit can not work when causing power line current smaller；When power line current is larger, Current Transformer Secondary
Winding output energy is very big, and the energy incuded from current transformer can exceed that energy needed for late-class circuit work, extra
If energy cannot get safe release, the safety of circuit and whole device will all substantially reduce.
Invention content
In view of the deficiencies of the prior art, it can be solved when power line current is smaller the object of the present invention is to provide a kind of, mutually
Sensor takes can be insufficient, and successive load is difficult to work, and the device of energy overstock problem is taken when power line current is larger, avoids safety
Hidden danger, to make current transformer self-induction that energy technology be taken really to be widely used.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes：
A kind of adaptive energy taking device, it includes：
Current transformer, for from power induction energy, being exported by secondary winding；
Magnetic linkage by-pass unit, is used for short circuit current mutual inductor secondary winding, or straight-through connection Current Transformer Secondary around
Group and taking energy unit；
Taking energy unit, the energy for being incuded secondary winding in current transformer are converted to required by rear class DC load
Voltage class；
Energy-storage units, for when the energy that secondary winding in current transformer incudes is less than energy needed for DC load, leading to
It crosses and releases energy to supplement the deficiency of inductive energy；And when the energy of secondary winding in current transformer induction is more than DC load
When required energy, by storing energy in case demand when inductive energy deficiency；
Output control unit, for being turned on and off the output channel for leading to DC load；And
Adaptive process monitoring unit controls magnetic linkage by-pass unit and output control unit for monitoring energy-storage units energy
It is turned on and off.
As advanced optimizing for said program, when the magnetic linkage by-pass unit is opened, secondary winding in current transformer quilt
Short circuit；When the magnetic linkage by-pass unit is closed, magnetic linkage by-pass unit is straight-through, and the output of secondary winding in current transformer, which is connected to, to be taken
The input terminal of energy unit.
As another aspect of the present invention, the present invention also provides a kind of power grids adaptively to take energy method, it includes：
It is compared according to energy needed for the energy of energy-storage units and rear class DC load, judges the Working mould of taking energy unit
Formula, so that taking energy unit is adaptively switched between discontinuous operation pattern and continuous operation mode, guarantee takes can process peace
Overall height is imitated.
As advanced optimizing for said program, the discontinuous operation pattern includes：
1) energy storage pattern, when adaptive process monitoring unit detects that the energy of energy-storage units is not enough to support the short of DC load
When work, it is straight-through that adaptive process monitoring unit controls magnetic linkage by-pass unit, closes output control unit, secondary winding in current transformer
Energy be stored in energy-storage units by taking energy unit；
2) short-term operation pattern, when adaptive process monitoring unit detects the enough DC loads of the energy of energy-storage units work in short-term
Make, adaptive process monitoring unit controls magnetic linkage by-pass unit and leads directly to, and opens output control unit, releases energy to DC load.
Further, the continuous operation mode includes：
1) magnetic linkage bypass mode, when adaptive process monitoring unit detects the energy surplus of energy-storage units, adaptive process monitoring list
Member control magnetic linkage by-pass unit work, keeps secondary winding short-circuit, fully relies on energy-storage units at this time and release energy to DC load
Work；
2) energy storage pattern is exported, when energy-storage units discharge certain energy, adaptive process monitoring unit detects that energy-storage units need
Energy is supplemented, adaptive process monitoring unit is led directly to magnetic linkage by-pass unit is controlled, at this point, taking energy unit had both exported energy to energy storage
Unit carries out energy storage, and exports the energy needed for DC load.
Further, judge whether the taking energy unit carries out pattern switching and the condition of pattern switching and be：It will be adaptive
Monitoring unit monitor value P is compared with continuous work threshold value P2,
As P ＜ P2, taking energy unit is operated in discontinuous operation pattern；
As P >=P2, taking energy unit is operated in continuous operation mode.
Adaptive process monitoring unit monitor value P is compared with short-term operation threshold value P1,
As P ＜ P1, taking energy unit is operated in energy storage pattern；
As P2 ＞ P >=P1, taking energy unit is operated in short-term operation pattern.
Adaptive process monitoring unit monitor value P is compared with output energy storage work threshold value P3,
As P2≤P ＜ P3, taking energy unit is operated in output energy storage pattern；
As P >=P3, taking energy unit is operated in magnetic linkage bypass mode.
Further, the short-term operation threshold value P1, continuous work threshold value P2 and output energy storage work threshold value P3
Relationship meet P1 ＜ P2 ＜ P3, wherein P1, P2, P3 and need to meet following requirement：
Energy needed for P1 ＞ DC load short-term operations；
Energy needed for P2 ＞ DC load continuous works；
P3 ＞ energy-storage units end-point energy values.
Compared with prior art, advantages of the present invention includes：
The adaptive energy taking device of the present invention, reduces requirement of the energy taking device to power line current, can be according to energy storage
The energy size of unit quickly carries out the adaptive switching between different working modes, and taking can be efficient；The power grid of the present invention is certainly
Adaptation takes energy method, to monitor the energy of energy-storage units in real time equipped with adaptive process monitoring unit in energy taking device, by energy storage list
Energy is compared needed for the energy and rear class DC load of member, is judged the operating mode of taking energy unit, is passed through adaptive process monitoring
Unit controls the opening and closing of magnetic linkage by-pass unit and output control unit, to realize the switching of different working modes, solution
Existing power line of having determined takes in energy technology, can not work under power line low current, and problem that can be superfluous is taken under high current.
Description of the drawings
Fig. 1 is the structural schematic diagram of the adaptive energy taking device of one embodiment of the invention.
Fig. 2 is the idiographic flow schematic diagram that the power grid of one embodiment of the invention adaptively takes energy method.
Specific implementation mode
In view of deficiency in the prior art, inventor is able to propose the present invention's through studying for a long period of time and largely putting into practice
Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
For adaptive energy taking device figure described in the present embodiment as shown in Figure 1, when having electric current to flow through in power line, electric current is mutual
Induced current will be generated in the secondary winding of sensor, mutual inductor secondary winding connects magnetic linkage bypass block.Magnetic linkage bypass block by
Adaptive process monitoring unit controls, and when magnetic linkage bypass block is opened, mutual inductor secondary winding short circuit, energy will not be transmitted to subsequent mould
Block；When magnetic linkage bypass block is closed, mutual inductor secondary winding is directly connected to taking energy unit.Taking energy unit is by Current Transformer Secondary
The electric current that winding is incuded is through over commutation, after voltage transformation and filtering, by energy conversion at meeting energy-storage units and rear class direct current
Load the voltage class of requirement.The output of taking energy unit terminates output control unit, and output control unit is adaptively supervised
Unit control is controlled, when output control unit is opened, energy taking device exports energy and works for DC load；Work as output control unit
When closing, the energy of energy taking device is temporarily stored in energy-storage units, not may be output to DC load.Energy-storage units, which are attempted by, to be taken
Can be between unit and output control unit, magnetic linkage bypass block is closed, when output control unit is closed, the energy of taking energy unit output
Amount will be stored in energy-storage units；When output control unit is opened, energy-storage units will release energy to output control unit.From
It adapts to monitoring unit and detects the energy in energy-storage units in real time, take step described in energy method to work according to adaptive, control magnetic linkage
By-pass unit and output control unit are turned on and off.
In the present embodiment, using in energy threshold needed for pre-set DC load operating mode and energy taking device
The energy monitoring value of energy-storage units is compared, and the switching judging of operating mode is made by adaptive process monitoring unit, and controls magnetic
Chain by-pass unit and output control unit, to realize the pattern switching of energy taking device.
The adaptive of the present embodiment takes the flow of energy method as shown in Fig. 2, being as follows：
1. adaptive process monitoring unit starts to monitor the energy of energy-storage units；
2. energy-storage units energy P is compared with continuous work threshold value P2, as P ＜ P2, step 3 is jumped to；Work as P
When >=P2, step 4 is jumped to；
3. taking energy unit is operated in discontinuous operation pattern at this time, adaptive process monitoring unit controls magnetic linkage by-pass unit and closes,
Secondary winding in current transformer is directly connected to taking energy unit, jumps to step 5 later；
4. taking energy unit is operated in continuous operation mode at this time, adaptive process monitoring unit controls output control unit and opens,
Continue to power to DC load, jumps to step 8 later；
5. energy-storage units energy P is compared with short-term operation threshold value P1, as P ＜ P1, step 6 is jumped to；When
When P2 >=P ＞ P1, step 7 is jumped to；
6. taking energy unit is operated in energy storage pattern at this time, adaptive process monitoring unit controls output control unit and closes, electric current
The energy of mutual inductor secondary winding is stored in by taking energy unit in energy-storage units, and step 11 is jumped to；
7. taking energy unit is operated in short-term operation pattern at this time, adaptive process monitoring unit controls output control unit and opens,
Energy-storage units release energy to work for DC load, jumps to step 11；
8. energy-storage units energy P is compared with output energy storage work threshold value P3, as P2≤P ＜ P3, jump to
Step 9；As P >=P3, step 10 is jumped to；
9. taking energy unit is operated in output energy storage pattern at this time, adaptive process monitoring unit controls magnetic linkage by-pass unit and closes,
The energy of secondary winding in current transformer is directly connected to taking energy unit, and taking energy unit had both exported energy and stored up to energy-storage units
Can, and the energy needed for DC load is exported, jump to step 11；
10. taking energy unit is operated in magnetic linkage bypass mode at this time, adaptive process monitoring unit controls magnetic linkage by-pass unit and opens,
Secondary winding in current transformer is fully relied on energy-storage units and is released energy to DC load at this time by magnetic linkage by-pass unit short circuit
Work, jumps to step 11.
11. detect taking energy unit whether power cut-off, such as want power cut-off, then terminate；Otherwise, step 1 is jumped to.
In the present embodiment, short-term operation the threshold value P1, continuous work threshold value P2 of adaptive process monitoring unit and output are stored up
The relationship of the threshold value that can work P3 meets the value of P1 ＜ P2 ＜ P3, P1, P2, P3 by the energy consumption of the connect DC load of energy taking device
It determines, specific threshold value determines that method is as follows：
Energy needed for P1 ＞ DC load short-term operations；
Energy needed for P2 ＞ DC load continuous works；
P3 ＞ energy-storage units end-point energy values.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
According to equivalent change or modification made by spirit of the invention, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of power grid adaptively takes energy method, it includes：
Current transformer, for from power induction energy, being exported by secondary winding；
Magnetic linkage by-pass unit, is used for short circuit current mutual inductor secondary winding, or straight-through connection secondary winding in current transformer and
Taking energy unit；
Taking energy unit, the energy for being incuded secondary winding in current transformer are converted to the electricity required by rear class DC load
Press grade；
Energy-storage units are used for when the energy that secondary winding in current transformer incudes is less than energy needed for DC load, by releasing
Exoergic amount is to supplement the deficiency of inductive energy；And when the energy of secondary winding in current transformer induction is more than needed for DC load
When energy, by storing energy in case demand when inductive energy deficiency；
Output control unit, for being turned on and off the output channel for leading to DC load；And adaptive process monitoring unit, it is used for
Monitoring energy-storage units energy, control magnetic linkage by-pass unit and output control unit are turned on and off, the magnetic linkage by-pass unit
When unlatching, secondary winding in current transformer is short-circuited；When the magnetic linkage by-pass unit is closed, magnetic linkage by-pass unit is straight-through, electric current
The output of mutual inductor secondary winding is connected to the input terminal of taking energy unit, which is characterized in that it includes：
It is compared according to energy needed for the energy of energy-storage units and rear class DC load, judges the operating mode of taking energy unit,
So that taking energy unit is adaptively switched between discontinuous operation pattern and continuous operation mode, guarantee takes can process safety height
Effect, is as follows：
1, adaptive process monitoring unit starts to monitor the energy of energy-storage units；
2, energy-storage units energy P is compared with continuous work threshold value P2, as P ＜ P2, jumps to step 3；As P >=P2
When, jump to step 4；
3, taking energy unit is operated in discontinuous operation pattern at this time, and adaptive process monitoring unit controls magnetic linkage by-pass unit and closes, electric current
Mutual inductor secondary winding is directly connected to taking energy unit, jumps to step 5 later；
4, taking energy unit is operated in continuous operation mode at this time, and adaptive process monitoring unit controls output control unit and opens, and continues
It powers to DC load, jumps to step 8 later；
5, energy-storage units energy P is compared with short-term operation threshold value P1, as P ＜ P1, jumps to step 6；As P2 >=P
When ＞ P1, step 7 is jumped to；
6, taking energy unit is operated in energy storage pattern at this time, and adaptive process monitoring unit controls output control unit and closes, Current Mutual Inductance
The energy of device secondary winding is stored in by taking energy unit in energy-storage units, and step 11 is jumped to；
7, taking energy unit is operated in short-term operation pattern at this time, and adaptive process monitoring unit controls output control unit and opens, energy storage
Unit releases energy to work for DC load, jumps to step 11；
8, energy-storage units energy P is compared with output energy storage work threshold value P3, as P2≤P ＜ P3, jumps to step
9；As P >=P3, step 10 is jumped to；
9, taking energy unit is operated in output energy storage pattern at this time, and adaptive process monitoring unit controls magnetic linkage by-pass unit and closes, electric current
The energy of mutual inductor secondary winding is directly connected to taking energy unit, and taking energy unit had not only exported energy and carried out energy storage to energy-storage units, but also
The energy needed for DC load is exported, step 11 is jumped to；
10, taking energy unit is operated in magnetic linkage bypass mode at this time, and adaptive process monitoring unit controls magnetic linkage by-pass unit and opens, electric current
Mutual inductor secondary winding fully relies on energy-storage units and releases energy and give DC load work at this time by the short circuit of magnetic linkage by-pass unit
Make, jumps to step 11；
11, detection taking energy unit whether power cut-off, such as want power cut-off, then terminate；Otherwise, step 1 is jumped to.
2. power grid according to claim 1 adaptively takes energy method, which is characterized in that the short-term operation threshold value P1,
The relationship of continuous work threshold value P2 and output energy storage work threshold value P3 meet P1 ＜ P2 ＜ P3, and wherein P1, P2, P3 needs to meet
It is following to require：
Energy needed for P1 ＞ DC load short-term operations；
Energy needed for P2 ＞ DC load continuous works；
P3 ＞ energy-storage units end-point energy values.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410734945.6A CN105656063B (en) | 2014-12-05 | 2014-12-05 | A kind of adaptive energy taking device and method |
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| CN201410734945.6A CN105656063B (en) | 2014-12-05 | 2014-12-05 | A kind of adaptive energy taking device and method |
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| CN105656063A CN105656063A (en) | 2016-06-08 |
| CN105656063B true CN105656063B (en) | 2018-08-14 |
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| WO2020142869A1 (en) * | 2019-01-07 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Power supply control circuit, power supply system, and movable platform |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684322A (en) * | 2012-05-30 | 2012-09-19 | 南京航空航天大学 | Energy collecting and voltage stabilizing power supply circuit based on taking electricity by using high-voltage power wires |
| CN204290399U (en) * | 2014-12-08 | 2015-04-22 | 上海航天有线电厂有限公司 | Based on the intelligent track-traffic high-voltage charging machine of touch-screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442434B1 (en) * | 1999-10-19 | 2002-08-27 | Abiomed, Inc. | Methods and apparatus for providing a sufficiently stable power to a load in an energy transfer system |
| JP3737372B2 (en) * | 2001-02-26 | 2006-01-18 | 株式会社日立製作所 | Current transformer input type power supply |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684322A (en) * | 2012-05-30 | 2012-09-19 | 南京航空航天大学 | Energy collecting and voltage stabilizing power supply circuit based on taking electricity by using high-voltage power wires |
| CN204290399U (en) * | 2014-12-08 | 2015-04-22 | 上海航天有线电厂有限公司 | Based on the intelligent track-traffic high-voltage charging machine of touch-screen |
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