CN102522831A - Non-contact electric field type induction power access method and power access apparatus thereof - Google Patents
Non-contact electric field type induction power access method and power access apparatus thereof Download PDFInfo
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- CN102522831A CN102522831A CN2011104059725A CN201110405972A CN102522831A CN 102522831 A CN102522831 A CN 102522831A CN 2011104059725 A CN2011104059725 A CN 2011104059725A CN 201110405972 A CN201110405972 A CN 201110405972A CN 102522831 A CN102522831 A CN 102522831A
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- 230000006698 induction Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005684 electric field Effects 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims description 55
- 239000004020 conductor Substances 0.000 claims description 15
- 230000002964 excitative effect Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 4
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Abstract
The invention provides a non-contact electric field type induction power access method. The method is characterized in that: the method comprises the following steps that: a, an induction electrode plate is used to approach a line wire, so that a capacitor is formed by the induction electrode plate and the line wire; and the capacitor is utilized to receive electric energy on a power transmission line; and b, a high transformation ratio and high excitation impedance transformer is applied to convert a high voltage and low current power source that is transmitted by the induction electrode plate into a low voltage and heavy current power source, so that the converted power source is suitable for application to a general electric device. According to the invention, a working power source that is needed by and is suitable for monitoring equipment can be stably obtained; the effect is obvious; and the method and the apparatus are beneficial for popularization and application in the on-line monitoring field of electric network equipment.
Description
Technical field
The invention provides near a kind of a kind of method that can energized conductor, utilize electric field induction principle to obtain power supply.
Background technology
Along with carrying out in a deep going way of intelligent grid and repair based on condition of component, the on-line monitoring of grid equipment obtains paying attention to day by day.The extensive influence of equipment on-line monitoring system has played important effect in time understanding equipment running status.Transmission line is as the important component part of electrical network, and its monitoring running state is also particularly important.Owing to often do not have commercial power supply, monitoring device can not make things convenient for the required power supply of acquisition work around the transmission line.
Generally adopt storage battery-solar panel at present.Seldom producer's employing wind energy and solar energy composite power supply are also arranged, but solar energy and wind energy rely on state of weather too much, and safeguard inconvenience.Also have utilize the electrified wire surrounding magnetic field get can mode, but that output is influenced by load is bigger, and fan-out capability generally is no more than 1W, only is fit to permission and directly hangs over other monitoring device of working on the live wire.
Summary of the invention
Goal of the invention: the present invention provides a kind of noncontact electric field type induction electricity-fetching method and electricity getting device, its purpose solve the method that way to take power in the past exists unstable, safeguard inconvenience and the low problem of electric weight fan-out capability.
Technical scheme: the present invention realizes through following technical scheme:
A kind of noncontact electric field type induction electricity-fetching method, it is characterized in that: the step of this method is following:
A, with the induced electricity pole plate near line conductor, make induced electricity pole plate and line conductor constitute electric capacity, utilize this electric capacity that the electric energy on the transmission line is received;
B, application one hypermutation ratio, high excitatory impedance transformer, high voltage, low current power supply that the induced electricity pole plate is passed over are transformed into low-voltage, high-current supply, to be fit to the use of general electric device.
Be certain safe distance between induced electricity pole plate and the line conductor in " a " step.
Described safe distance is more than 1 meter.
When being applied in 500 kilovoltage systems, safe distance is not less than 5 meters, and when being applied in 220 kilovoltage systems, safe distance is not less than 3 meters.
When the electric current that the induced electricity pole plate passes in " b " step is flowed through winding of impedance transformer, can induce voltage at secondary side, the appropriate design parameter obtains to be suitable for the required working power of monitoring equipment.
Between the transformer high-voltage side of " b " step and induced electricity pole plate, be connected in series a high impedance value coil, further improve the power supply that obtains.
, use the noncontact electric field type induction electricity getting device of above-mentioned noncontact electric field type induction electricity-fetching method, it is characterized in that: this device comprises induced electricity pole plate and the power supply that is connected through lead with the induced electricity pole plate; In power supply, be provided with hypermutation ratio, high excitatory impedance transformer, impedance transformer is connected to the induced electricity pole plate.
Be provided with the high impedance value coil between impedance transformer and the induced electricity pole plate.
Also be with insulator on the lead between induced electricity pole plate and the power supply.
Advantage and effect: the present invention provides a kind of noncontact electric field type induction electricity-fetching method, and it is characterized in that: the step of this method is following:
A, with the induced electricity pole plate near line conductor, make induced electricity pole plate and line conductor constitute electric capacity, utilize this electric capacity that the electric energy on the transmission line is received;
B, application one hypermutation ratio, high excitatory impedance transformer, high voltage, low current power supply that the induced electricity pole plate is passed over are transformed into low-voltage, high-current supply, to be fit to the use of general electric device.
In addition, the present invention also provides a kind of noncontact electric field type induction electricity getting device, and this device comprises induced electricity pole plate and the power supply that is connected through lead with the induced electricity pole plate; In power supply, be provided with hypermutation ratio, high excitatory impedance transformer, impedance transformer is connected to the induced electricity pole plate.
Method of the present invention is used the induced electricity pole plate, constitutes electric capacity with line conductor.Utilize this electric capacity that the electric energy on the transmission line is received.Induced electricity pole plate and line conductor have certain safe distance, do not influence the safe operation of circuit, also make things convenient for the repair and maintenance of self.
The present invention uses hypermutation ratio, high excitatory impedance transformer, and high voltage, low current power supply that the induced electricity pole plate is passed over are transformed into low-voltage, high-current supply, thereby are more suitable for the use of general electric device.
The present invention be connected in series a high impedance value coil with induction between the pole plate in the transformer high-voltage side, further improves the power supply of acquisition.
In sum, the present invention has and is easy to implement, and the outstanding effect characteristics have well solved the problem that exists in the method in the past.
Description of drawings:
Fig. 1 is a power taking principle schematic of the present invention;
Fig. 2 is a noncontact electric field type induction electricity getting device structural representation of the present invention.
Embodiment: the present invention is done further explanation below in conjunction with accompanying drawing:
Be illustrated in figure 1 as power taking principle schematic of the present invention, label 1 is depicted as transmission line wire among the figure, and 2 is the electric capacity that is thought of as between induced electricity pole plate and the line conductor, and 3 is the high impedance value coil, and 4 is impedance transformer, and 5 are load.
The present invention provides a kind of noncontact electric field type induction electricity-fetching method, and the step of this method is following:
A, with the induced electricity pole plate near line conductor, make induced electricity pole plate and line conductor constitute electric capacity, utilize this electric capacity that the electric energy on the transmission line is received;
B, application one hypermutation ratio, high excitatory impedance transformer, high voltage, low current power supply that the induced electricity pole plate is passed over are transformed into low-voltage, high-current supply, to be fit to the use of general electric device.
Be certain safe distance between induced electricity pole plate and the line conductor in " a " step.
Described safe distance is more than 1 meter.
When being applied in 500 kilovoltage systems, safe distance is not less than 5 meters, and when being applied in 220 kilovoltage systems, safe distance is not less than 3 meters.
When the electric current that the induced electricity pole plate passes in " b " step is flowed through winding of impedance transformer, can induce voltage at secondary side, the appropriate design parameter obtains to be suitable for the required working power of monitoring equipment.
Between the transformer high-voltage side of " b " step and induced electricity pole plate, be connected in series a high impedance value coil, further improve the power supply that obtains.
Operation principle of the present invention enough becomes electric capacity to obtain voltage through the induction pole plate with live wire.The patented product is mainly used 500 kilovolts and 220 kilovoltage systems.500 kilovolts of lead voltage to earths are 288 kilovolts; 220 kilovolts of lead voltage to earths are 127 kilovolts.Because induction pole plate and live wire distance generally will be more than 1 meter, as 500 kilovolts at least will be more than 5 meters, to learn through field measurement more than 3 meters for 220 kilovolts, through induction pole plate (the induced current 1.2mA of acquisition of 500mm * 1200mm).
Therefore the power supply that is made up of induction pole plate and live wire belongs to the voltage source of high voltage, high internal resistance; Voltage source converts current source to thus; Can Approximate Equivalent be constant-current source, even when load impedance changes at double, electric current also constant basically
.
In order to improve power taking power, just need on equivalent load, obtain big voltage and big electric current.By the induction electric current that pole plate obtained is capacitive; Series connection one resistance value is 20 megohm reactors (induction reactance values less than the capacitor value of induction pole plate and live wire time) in this loop; Just can reduce the total impedance in loop, induced electricity flow valuve current value is brought up to 1.5mA; When load impedance is 10 ohm, be after 3000 transformer inserts the power taking loop through a no-load voltage ratio, equiva lent impedance will reach 90 megohms above (convert on high-tension side impedance=low-pressure side impedance * no-load voltage ratio square).Like this, induced current will have very high voltage in this load.So, the power of the improved induction power taking of adding reactor and transformer.Because the existence of transformer excitation impedance, above-mentioned equiva lent impedance is actual to be 10 megohms.
In addition, as shown in Figure 2, the present invention also provides a kind of noncontact electric field type induction electricity getting device, and this device comprises induced electricity pole plate 6 and the power supply 8 that is connected through lead with the induced electricity pole plate; In power supply, be provided with hypermutation ratio, high excitatory impedance transformer, impedance transformer is connected to the induced electricity pole plate.
Be provided with the high impedance value coil between impedance transformer and the induced electricity pole plate.This coil further improves the power supply of acquisition.Also be with insulator 7 on the lead between induced electricity pole plate and the power supply.
Main element is induced electricity pole plate and impedance transformer in the power taking technology of the present invention.Form an electric capacity between induced electricity pole plate and the live wire.When capacitance current is flowed through winding of impedance transformer, can induce voltage at secondary side.The appropriate design parameter just can obtain to be suitable for the required working power of monitoring equipment.
The present invention can be stable obtain be suitable for the required working power of monitoring equipment, effect is obvious, is beneficial in the on-line monitoring field of grid equipment to apply.
Claims (9)
1. a noncontact electric field type is responded to electricity-fetching method, and it is characterized in that: the step of this method is following:
A, with the induced electricity pole plate near line conductor, make induced electricity pole plate and line conductor constitute electric capacity, utilize this electric capacity that the electric energy on the transmission line is received;
B, application one hypermutation ratio, high excitatory impedance transformer, high voltage, low current power supply that the induced electricity pole plate is passed over are transformed into low-voltage, high-current supply, to be fit to the use of general electric device.
2. noncontact electric field type induction electricity-fetching method according to claim 1 is characterized in that: be certain safe distance in " a " step between induced electricity pole plate and the line conductor.
3. noncontact electric field type induction electricity-fetching method according to claim 2, it is characterized in that: described safe distance is more than 1 meter.
4. noncontact electric field type according to claim 3 induction electricity-fetching method, it is characterized in that: when being applied in 500 kilovoltage systems, safe distance is not less than 5 meters, and when being applied in 220 kilovoltage systems, safe distance is not less than 3 meters.
5. noncontact electric field type induction electricity-fetching method according to claim 1; It is characterized in that: when the electric current that the induced electricity pole plate passes in " b " step is flowed through winding of impedance transformer; Can induce voltage at secondary side; The appropriate design parameter obtains to be suitable for the required working power of monitoring equipment.
6. noncontact electric field type according to claim 1 induction electricity-fetching method is characterized in that: between the transformer high-voltage side of " b " step and induced electricity pole plate, be connected in series a high impedance value coil, further the power supply of raising acquisition.
7. application rights requires the noncontact electric field type induction electricity getting device of 1 described noncontact electric field type induction electricity-fetching method, it is characterized in that: this device comprises induced electricity pole plate and the power supply that is connected through lead with the induced electricity pole plate; In power supply, be provided with hypermutation ratio, high excitatory impedance transformer, impedance transformer is connected to the induced electricity pole plate.
8. noncontact electric field type induction electricity getting device according to claim 7 is characterized in that: be provided with the high impedance value coil between impedance transformer and the induced electricity pole plate.
9. noncontact electric field type induction electricity getting device according to claim 7 is characterized in that: also be with insulator on the lead between induced electricity pole plate and the power supply.
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| CN2011104059725A CN102522831A (en) | 2011-12-08 | 2011-12-08 | Non-contact electric field type induction power access method and power access apparatus thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078410A (en) * | 2012-12-31 | 2013-05-01 | 黑龙江工程学院 | Detachable low-temperature-resistant high-voltage distribution network power taking device |
| CN105046018A (en) * | 2015-08-20 | 2015-11-11 | 云南电网有限责任公司电力科学研究院 | Non-contact line over-voltage monitoring apparatus and monitoring method based on finite element analysis |
| CN105119326A (en) * | 2015-09-22 | 2015-12-02 | 国家电网公司 | Electric field overhead line wireless energy-obtaining apparatus |
| CN108683263A (en) * | 2018-07-27 | 2018-10-19 | 广东电网有限责任公司 | A kind of electric energy collection device |
| CN108879973A (en) * | 2018-07-11 | 2018-11-23 | 广东电网有限责任公司 | Ultra-high-tension power transmission line sensing electricity getting device and system |
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| CN103078410A (en) * | 2012-12-31 | 2013-05-01 | 黑龙江工程学院 | Detachable low-temperature-resistant high-voltage distribution network power taking device |
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| CN108879973A (en) * | 2018-07-11 | 2018-11-23 | 广东电网有限责任公司 | Ultra-high-tension power transmission line sensing electricity getting device and system |
| CN108683263A (en) * | 2018-07-27 | 2018-10-19 | 广东电网有限责任公司 | A kind of electric energy collection device |
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Owner name: XI AN TONGKAI ELECTRON TECHNOLOGY CO., LTD. STATE Free format text: FORMER OWNER: XI AN TONGKAI ELECTRON TECHNOLOGY CO., LTD. Effective date: 20121227 |
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Effective date of registration: 20121227 Address after: 110003 Liaoning Province glorious Street Heping District of Shenyang City No. 21 Applicant after: Shenyang EHV Branch, Liaoning Power Co.,Ltd. Applicant after: Xi'an Tongkai Electron Technology Co., Ltd. Applicant after: State Grid Corporation of China Address before: 110003 Liaoning Province glorious Street Heping District of Shenyang City No. 21 Applicant before: Shenyang EHV Branch, Liaoning Power Co.,Ltd. Applicant before: Xi'an Tongkai Electron Technology Co., Ltd. |
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Application publication date: 20120627 |