CN109358227A - A kind of resonance mutual inductance energy taking device for power network monitoring - Google Patents
A kind of resonance mutual inductance energy taking device for power network monitoring Download PDFInfo
- Publication number
- CN109358227A CN109358227A CN201811490260.6A CN201811490260A CN109358227A CN 109358227 A CN109358227 A CN 109358227A CN 201811490260 A CN201811490260 A CN 201811490260A CN 109358227 A CN109358227 A CN 109358227A
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- China
- Prior art keywords
- energy
- module
- mutual inductance
- power network
- current
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000004146 energy storage Methods 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- H02J5/005—
-
- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
Abstract
A kind of resonance mutual inductance energy taking device for power network monitoring, energy module, current detection module, energy management module, energy storage module are taken including current transformer, mutual inductance, the mutual inductance takes energy module to include resonant capacitance, rectification circuit, sampling resistor, take energy capacitor, the current detection module includes current sense amplifier, virtual value extractor, controller, and the controller is singlechip controller.The present invention forms LC resonance circuit using resonant capacitance and current transformer, has the function of self-adapting resonance, can be adapted for the current transformer of various different sizes.The present invention can substantially increase efficiency of energy collection, and no longer need maximal power tracing circuit, environmental suitability is strong with adjust automatically resonant capacitance size in the case where current transformer first side winding power frequency changes.The present invention can not only collect energy, while can also detect power network current size, be suitable for various power network monitoring equipment, solve the energy problem of power network monitoring equipment, eliminate the trouble of replacement battery, reduce battery cost and O&M cost.
Description
Technical field
The present invention relates to electrical facility technical fields more particularly to a kind of resonance mutual inductance for power network monitoring to take and can fill
It sets.
Background technique
Smart grid carries out on-line real time monitoring to transmission of electricity road, and monitoring efficiency is high, time saving and energy saving, steady to power system security
Surely it is of great significance.In the prior art, the mode that the monitoring device in smart grid mostly uses mutual inductor to take energy provides power supply,
But due to the resonant capacitance of different size mutual inductor difference, while resonance point is influenced also by environment, temperature can be shifted, so that
Take electrical efficiency to be difficult to be optimal, thus greatly reduce power network monitoring equipment using duration and the accuracy of monitoring data.
Therefore, it is necessary to provide a kind of new above-mentioned technical problem is solved for the resonance mutual inductance energy taking device of power network monitoring.
Summary of the invention
Technical problem solved by the invention is to provide a kind of resonance mutual inductance energy taking device for power network monitoring.The dress
Setting has the function of self-adapting resonance, can be according to the mutual inductor of different size and the primary current adjust automatically capacitor of different frequency
Reach resonant state, takes energy efficiency to maximize, reduce starting current；The device can provide for various power network monitoring equipment
Independent current source simultaneously monitors power network current size, have the advantages that it is small in size, facilitate installation, be non-maintaining, the service life it is long.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of resonance mutual inductance energy taking device for power network monitoring, it is characterised in that: taking including current transformer, mutual inductance can mould
Block, current detection module, energy management module, energy storage module, the first side winding and power network line of current transformer connect
It connects, secondary side winding and mutual inductance take energy module to connect；Mutual inductance takes energy module to connect with current detection module, energy management module,
Energy management module is connect with energy storage module, and mutual inductance takes energy module that the electric energy of extraction is passed to energy management module, in turn
Energy storage module is stored in by energy management module；Energy storage module connects with current detection module and power network monitoring equipment simultaneously
It connects, energy storage module is energy management module, current detection module and the power supply of power network monitoring equipment, and the mutual inductance takes can module
Including resonant capacitance, rectification circuit, sampling resistor, energy capacitor is taken, the current detection module includes current sense amplifier, has
The secondary side winding connection composition LC resonance circuit of valid value extractor, controller, resonant capacitance and current transformer, mutual inductance take energy
The rectification circuit of module connect with secondary side winding and rectifies to the electric current from secondary side winding, sampling resistor and takes energy
Capacitor is connected with the rectifying circuit, and the electric current exported after rectified circuit rectifies enters after sampling resistor takes energy capacitor, to take
It can capacitor charging；It takes energy capacitor to connect with energy management module, takes energy capacitor by the power output being collected into energy management mould
Block, energy management module is in turn by power storage in energy storage module；The current sense of the current detection module amplifies
Device electric current input, output end be connected to mutual inductance take can module sampling resistor both ends, the current sense amplifier and effectively
It is worth extractor connection, virtual value extractor connection controller and power network monitoring equipment, controller are connect with resonant capacitance, the control
Device processed is singlechip controller.
Further, the resonant capacitance is made of a capacitor array, the capacitor array by N number of capacitor of different sizes and
Electronic switch composes in parallel, and electronic switch is connected by the controller of bus and current detection module, and controller is to electronic switch
Control is carried out to obtain different size of total capacitance in parallel.
Further, the energy management module includes DC/DC converter and charge protection route, the energy stores mould
Block includes super capacitor and lithium battery.
A kind of resonance mutual inductance energy taking device for power network monitoring of the present invention, utilizes resonant capacitance and current transformer
LC resonance circuit is formed, has the function of self-adapting resonance, can be adapted for the current transformer of various different sizes.It is mutual in electric current
It, can be with adjust automatically resonant capacitance size in the case that sensor first side winding power frequency changes.Compared to traditional resonance free
Energy taking device substantially increases efficiency of energy collection, and no longer needs maximal power tracing circuit, takes compared to fixed resonant capacitance
Energy device, improves the adaptability to different current transformers, first side winding electric current and environment.The present invention can not only collect
Energy, while power network current size can also be detected, compared to conventional current sensors, extra power power supply is not needed, is not required to
Want additional energy taking device.The present invention is suitable for various power network monitoring equipment, solves the energy problem of power network monitoring equipment, removes from
The trouble of replacement battery, reduces battery cost, human cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the resonance mutual inductance energy taking device for power network monitoring of the present invention；
Fig. 2 is the electric schematic illustration of resonant capacitance of the present invention.
Embodiment
Below in conjunction with attached drawing, the technical solution in the present embodiment is clearly and completely described, embodiment is only the present invention
A part of the embodiment, instead of all the embodiments.Those of ordinary skill in the art are without making creative work
Every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1, the present invention provides a kind of resonance mutual inductance energy taking devices for power network monitoring, including electric current
Mutual inductor, mutual inductance take energy module, current detection module, energy management module, energy storage module, the primary side of current transformer
Winding is connect with power network line, secondary side winding and mutual inductance take energy module to connect；Mutual inductance takes can module and current detection module, energy
Management module connection is measured, energy management module is connect with energy storage module, and mutual inductance takes energy module that the electric energy of extraction is passed to energy
Management module is measured, and then energy storage module is stored in by energy management module；Energy storage module while and current detection module
And the connection of power network monitoring equipment, energy storage module are that energy management module, current detection module and power network monitoring equipment are powered,
The mutual inductance takes energy module to include resonant capacitance, rectification circuit, sampling resistor, take energy capacitor, and the current detection module includes
The secondary side winding connection composition LC of current sense amplifier, virtual value extractor, controller, resonant capacitance and current transformer
Resonance circuit, mutual inductance take the rectification circuit of energy module to connect and carry out to the electric current from secondary side winding whole with secondary side winding
Stream, sampling resistor and take can capacitor be connected with the rectifying circuit, the electric current exported after rectified circuit rectifies is after sampling resistor
It, can capacitor charging to take into energy capacitor is taken；Energy capacitor is taken to connect with energy management module, the electric energy for taking energy capacitor that will be collected into
Output is to energy management module, energy management module and then by power storage in energy storage module；The current detecting mould
The electric current input of the current sense amplifier of block, output end are connected to the sampling resistor both ends that mutual inductance takes energy module, the electric current
Sensor amplifier is connect with virtual value extractor, and virtual value extractor connects controller and power network monitoring equipment, controller with it is humorous
Vibration capacitance connection, the controller are singlechip controller.The controller of current detection module can be according to the change of size of current
Change situation to control resonant capacitance by bus, adjust automatically resonant capacitance size.It is taken in energy module in mutual inductance, flows through and adopt
The electric current of sample resistance is the charging current for taking energy capacitor, is detected by current detection module to it, to reduce electric energy
Loss, the resistance value of sampling resistor should be as small as possible.
As shown in Fig. 2, resonant capacitance is specifically to be made of a capacitor array, the capacitor array is by N number of electricity of different sizes
Hold and electronic switch composes in parallel, electronic switch is connected by the controller of bus and current detection module, and controller is to electronics
Switch carries out control to obtain different size of total capacitance in parallel.Capacitor total quantity N numerical value is bigger, the variation of resonant capacitance value
Range is bigger.
After the alternating current that rectification circuit exports current transformer rectifies, electric current flows through sampling resistor, then is taken
It can capacitor charging.It takes energy capacitor by the power output being collected into subsequent energy management module, and then is stored in energy stores
In module.Energy storage module is energy management module, current detection module and power network monitoring equipment provide power supply.
The energy management module includes DC/DC converter and charge protection route, and the energy storage module includes super
Grade capacitor and lithium battery.
Current detection module detection is the charging current for taking energy module, and it is primary largely also to can reflect power grid
The size of electric current, current detection module will test result and be output to power network monitoring equipment, can be used as the ginseng of power network current size
Numerical value.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, under the premise of not departing from design and the principle of the present invention made by equivalent changes and modifications, should all
Belong to the scope of protection of the invention.
Claims (3)
1. a kind of resonance mutual inductance energy taking device for power network monitoring, it is characterised in that: taking including current transformer, mutual inductance can mould
Block, current detection module, energy management module, energy storage module, the first side winding and power network line of current transformer connect
It connects, secondary side winding and mutual inductance take energy module to connect；Mutual inductance takes energy module to connect with current detection module, energy management module,
Energy management module is connect with energy storage module, and mutual inductance takes energy module that the electric energy of extraction is passed to energy management module, in turn
Energy storage module is stored in by energy management module；Energy storage module connects with current detection module and power network monitoring equipment simultaneously
It connects, energy storage module is energy management module, current detection module and the power supply of power network monitoring equipment, and the mutual inductance takes can module
Including resonant capacitance, rectification circuit, sampling resistor, energy capacitor is taken, the current detection module includes current sense amplifier, has
The secondary side winding connection composition LC resonance circuit of valid value extractor, controller, resonant capacitance and current transformer, mutual inductance take energy
The rectification circuit of module connect with secondary side winding and rectifies to the electric current from secondary side winding, sampling resistor and takes energy
Capacitor is connected with the rectifying circuit, and the electric current exported after rectified circuit rectifies enters after sampling resistor takes energy capacitor, to take
It can capacitor charging；It takes energy capacitor to connect with energy management module, takes energy capacitor by the power output being collected into energy management mould
Block, energy management module is in turn by power storage in energy storage module；The current sense of the current detection module amplifies
Device electric current input, output end be connected to mutual inductance take can module sampling resistor both ends, the current sense amplifier and effectively
It is worth extractor connection, virtual value extractor connection controller and power network monitoring equipment, controller are connect with resonant capacitance, the control
Device processed is singlechip controller.
2. a kind of resonance mutual inductance energy taking device for power network monitoring according to claim 1, it is characterised in that: described humorous
Vibration capacitor is made of a capacitor array, which is composed in parallel by N number of capacitor and electronic switch of different sizes, electronic cutting
It closes and is connected by the controller of bus and current detection module, controller carries out control to electronic switch to obtain different size
Total capacitance in parallel.
3. a kind of resonance mutual inductance energy taking device for power network monitoring according to claim 1, it is characterised in that: the energy
Measuring management module includes DC/DC converter and charge protection route, and the energy storage module includes super capacitor and lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490260.6A CN109358227A (en) | 2018-12-06 | 2018-12-06 | A kind of resonance mutual inductance energy taking device for power network monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490260.6A CN109358227A (en) | 2018-12-06 | 2018-12-06 | A kind of resonance mutual inductance energy taking device for power network monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109358227A true CN109358227A (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811490260.6A Pending CN109358227A (en) | 2018-12-06 | 2018-12-06 | A kind of resonance mutual inductance energy taking device for power network monitoring |
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| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110285210A1 (en) * | 2007-12-21 | 2011-11-24 | Access Business Group International Llc | Circuitry for inductive power transfer |
| CN102290873A (en) * | 2011-08-22 | 2011-12-21 | 重庆大学 | Frequency stabilizing circuit for non-contact energy transmission system |
| CN103441581A (en) * | 2013-08-19 | 2013-12-11 | 广西电网公司电力科学研究院 | IPT system primary power regulation method and system based on controllable inductance |
| CN104682577A (en) * | 2015-03-02 | 2015-06-03 | 武汉泰可电气股份有限公司 | Wireless power transmission equipment for supplying power to transmission line monitoring system and tuning method |
| CN204721106U (en) * | 2015-07-10 | 2015-10-21 | 国家电网公司 | Based on the power transmission line overhead ground wire electromagnetism energy taking device of super capacitor |
| CN105515219A (en) * | 2014-12-05 | 2016-04-20 | 浙江图维电力科技有限公司 | Current transformer-based series resonance electricity-acquiring DC source |
| CN107171452A (en) * | 2017-04-21 | 2017-09-15 | 西安电子科技大学 | A kind of π type impedance auto-match system and methods in RF energy Acquisition Circuit |
| CN206740851U (en) * | 2017-05-25 | 2017-12-12 | 广西大学 | A kind of resonance power taking for being embedded in switch and residual voltage measuring system |
-
2018
- 2018-12-06 CN CN201811490260.6A patent/CN109358227A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110285210A1 (en) * | 2007-12-21 | 2011-11-24 | Access Business Group International Llc | Circuitry for inductive power transfer |
| CN102290873A (en) * | 2011-08-22 | 2011-12-21 | 重庆大学 | Frequency stabilizing circuit for non-contact energy transmission system |
| CN103441581A (en) * | 2013-08-19 | 2013-12-11 | 广西电网公司电力科学研究院 | IPT system primary power regulation method and system based on controllable inductance |
| CN105515219A (en) * | 2014-12-05 | 2016-04-20 | 浙江图维电力科技有限公司 | Current transformer-based series resonance electricity-acquiring DC source |
| CN104682577A (en) * | 2015-03-02 | 2015-06-03 | 武汉泰可电气股份有限公司 | Wireless power transmission equipment for supplying power to transmission line monitoring system and tuning method |
| CN204721106U (en) * | 2015-07-10 | 2015-10-21 | 国家电网公司 | Based on the power transmission line overhead ground wire electromagnetism energy taking device of super capacitor |
| CN107171452A (en) * | 2017-04-21 | 2017-09-15 | 西安电子科技大学 | A kind of π type impedance auto-match system and methods in RF energy Acquisition Circuit |
| CN206740851U (en) * | 2017-05-25 | 2017-12-12 | 广西大学 | A kind of resonance power taking for being embedded in switch and residual voltage measuring system |
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Application publication date: 20190219 |