CN102497128A - Capacitive power supply method and device based on high-voltage electric field - Google Patents
Capacitive power supply method and device based on high-voltage electric field Download PDFInfo
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- CN102497128A CN102497128A CN2011103809688A CN201110380968A CN102497128A CN 102497128 A CN102497128 A CN 102497128A CN 2011103809688 A CN2011103809688 A CN 2011103809688A CN 201110380968 A CN201110380968 A CN 201110380968A CN 102497128 A CN102497128 A CN 102497128A
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Abstract
The invention discloses a capacitive power supply method and a capacitive power supply device based on a high-voltage electric field. According to a theory that the high-voltage electric field exists between two phases of a high-voltage line or between a high-voltage power transmission line and the ground, a metal body with a proper size is put at a proper distance position between the two phases of the high-voltage line or between the high-voltage power transmission line and the ground, so that two series equivalent capacitors are formed between the metal body and the two phases of the high-voltage line, or two series equivalent capacitors are formed between the metal body and the high-voltage power transmission line as well as between the metal body and the ground; energy of the electric field can be obtained by voltage share of the two series equivalent capacitors; the obtained energy is stored and accumulated; and when reaching a certain value, the accumulated electric energy is supplied to loads with low power consumption, such as a micro processor, a wireless transceiver and the like. A new technical measure is supplied to solving the problem of power supply to high-voltage accessory equipment; the device has a simple structure and a small volume, and is portable; the method is easy to implement; and the high-voltage line safety rule can be met.
Description
Technical field
The invention belongs to power electronics and electric apparatus monitoring technical field, particularly a kind of condenser type method of supplying power to and device thereof based on high voltage electric field.
Background technology
In the electric apparatus monitoring field, especially to the high-voltage line status monitoring of (comprising high voltage transmission line and high-voltage line row), how to give the power supply of high-voltage line auxiliary device is a stubborn problem always.In existing system, generally adopt induction by current or powered battery and photocell to provide the mode of energy to supply power, but that the former receive high-voltage line to flow through the influence of electric current is violent to system, the energy that promptly provides along with the variation power supply of user power utilization amount also has acute variation; Though and powered battery does not receive the influence of high-tension apparatus, receive the limitation of battery life, needing regularly has a power failure is the system conversion battery; And solar cell has the stable advantage of powered battery, but can receive the influence of environment, and is very suitable for open-air atmosphere, and this supply power mode obviously is worthless under indoor environment or in the high-tension switch cabinet, and the scope of application is quite limited.So in high-voltage electric power system, the work capacity of measuring system obtains the comparison difficulty, should stablize has sufficiently long useful life again, and present supply power mode all can not well address this problem.See from the angle that reduces system power dissipation; Along with development of science and technology; Many companies are Linear for example, energy-trap chip and solution thereof that companies such as TI have released super low-power consumption Series chip, wireless module and have been used to collect faint energy, the application of the product of these super low-power consumptions; Greatly reduce the power consumption of system and the power requirement of high-voltage line auxiliary device, still can not thoroughly solve the problem of giving the power supply of high-voltage line auxiliary device at present but can only alleviate power supply contradiction like this.
Summary of the invention
The object of the present invention is to provide a kind of condenser type method of supplying power to and device thereof, solve technical problem into the power supply of high pressure auxiliary device safety and stability based on high voltage electric field.
The technical solution that realizes the object of the invention is: a kind of condenser type method of supplying power to based on high voltage electric field; Between high-voltage line two phases, put into metallic object; Make between metallic object and the high-voltage line and form distributed capacitance; The system that described two phase high-voltage lines, metallic object constitute is that a phase high-voltage line is connected to another phase high-voltage line composition loop through two equivalent series electric capacity with regard to equivalence, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field, and the energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores; Power demand situation during according to loaded work piece is supplied power, and behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained, energize is collected chip and collected, stores; Power demand situation during according to loaded work piece is supplied power, and described high-voltage line is high voltage transmission line or high-voltage line row.
Another kind of condenser type method of supplying power to based on high voltage electric field; Between a high voltage transmission line and the earth, put into metallic object; Make metallic object form distributed capacitance respectively and between the high voltage transmission line, the earth, the system that described high voltage transmission line, metallic object, the earth constitute just equivalence forms the loop for high voltage transmission line is connected to the earth through two equivalent series electric capacity, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field; The energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power, behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power.
First kind of condenser type electric supply installation based on high voltage electric field; Comprise energy acquisition module and collection of energy module, the collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high-voltage line, metallic object; Metallic object is arranged between high-voltage line two phases through insulator; Make metallic object and high-voltage line two form distributed capacitance respectively between mutually, metallic object, wherein a phase high-voltage line as the input of collection of energy module, high-voltage line is high voltage transmission line or high-voltage line row respectively.
Second kind of condenser type electric supply installation based on high voltage electric field; Comprise energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high voltage transmission line, metallic object and the earth, and metallic object is arranged between high voltage transmission line and the earth through insulated wire; Make and form distributed capacitance between metallic object and high voltage transmission line, the earth respectively, metallic object, high voltage transmission line are respectively as the input of collection of energy module.
The third is based on the condenser type electric supply installation of high voltage electric field; Comprise energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high-voltage line, metallic object and electric capacity, and wherein a phase high-voltage line is connected with an end of electric capacity; Metallic object is connected with the other end of electric capacity; Make metallic object form distributed capacitance mutually between the high-voltage line with another, the two ends of electric capacity are as the input of collection of energy module, and high-voltage line is high voltage transmission line or high-voltage line row.
The 4th kind of condenser type electric supply installation based on high voltage electric field; Comprise energy acquisition module and collection of energy module, the collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high voltage transmission line, metallic object, the earth and electric capacity; Wherein high voltage transmission line is connected with an end of electric capacity; Metallic object is connected with the other end of electric capacity, makes between metallic object and the earth and forms distributed capacitance, and the two ends of electric capacity are as the input of collection of energy module.
The present invention compared with prior art, its remarkable advantage: (1) the present invention provides new technological means for solve giving high pressure auxiliary device powerup issue, its apparatus structure is fairly simple with the method realization, volume is little, and is light, satisfies the high-voltage line safety standard.(2) the present invention utilizes the high voltage electric field that exists around the high-voltage line to obtain energy, for the high pressure auxiliary device, gets ability, continuous on the spot; Compare battery, the life-span prolongs, and need not often change; Its shielding is good; The solar energy way to take power is compared in work that can safety and stability in high voltage electric field, does not receive the influence in weather and place.(3) utilize the almost constant characteristics of voltage of high voltage transmission line, compare the current mode induction power supply, power supply of the present invention is stable.(4) range of application of apparatus of the present invention is wide, versatility good, can be power supplies such as single-chip microcomputer, wireless module.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is a kind of structural representation that the present invention is based on the condenser type electric supply installation of high voltage electric field.
Fig. 2 is the another kind of structural representation that the present invention is based on the condenser type electric supply installation of high voltage electric field.
Fig. 3 is a horizontal profile sketch map of putting into metallic object between the high-voltage line row.
Fig. 4 is an equivalent circuit diagram of putting into metallic object between the high-voltage line row.
Fig. 5 is the simple equivalent circuit figure that puts into metallic object between the high-voltage line row.
Fig. 6 is a condenser type electric supply installation reduced graph of putting into metallic object between the high-voltage line row.
Fig. 7 is the equivalent-simplification circuit diagram of Fig. 6.
Embodiment
In high-voltage electric power system, the power supply of high pressure auxiliary device should be stablized has sufficiently long useful life again, and present supply power mode all can not address this problem well.For addressing this problem; The present invention proposes a kind of high voltage electric field condenser type electricity-fetching method and device; Can directly obtain energy from the entrained high voltage electric field of high-voltage line on the one hand, high-voltage line voltage is almost constant on the other hand, this condenser type power supply good stability, reliability height.
The present invention is based on the condenser type method of supplying power to of high voltage electric field; Between high-voltage line two phases, put into metallic object; Make between metallic object and the high-voltage line and form distributed capacitance; The system that described two phase high-voltage lines, metallic object constitute is that a phase high-voltage line is connected to another phase high-voltage line composition loop through two equivalent series electric capacity with regard to equivalence, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field, and the energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores; Power demand situation during according to loaded work piece is supplied power, and behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained, energize is collected chip and collected, stores; Power demand situation when working according to load (like single-chip microcomputer, wireless module etc.) is supplied power, and described high-voltage line is high voltage transmission line or high-voltage line row.
Another kind of the present invention is based on the condenser type method of supplying power to of high voltage electric field; Between a high voltage transmission line and the earth, put into metallic object; Make metallic object form distributed capacitance respectively and between the high voltage transmission line, the earth, the system that described high voltage transmission line, metallic object, the earth constitute just equivalence forms the loop for high voltage transmission line is connected to the earth through two equivalent series electric capacity, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field; The energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power, behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power.
In conjunction with Fig. 1; The present invention is based on the condenser type electric supply installation of high voltage electric field; Comprise energy acquisition module and collection of energy module, the collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high-voltage line, metallic object; Metallic object is arranged between high-voltage line two phases through insulator; Make metallic object and high-voltage line two form distributed capacitance respectively between mutually, metallic object, wherein a phase high-voltage line as the input of collection of energy module, high-voltage line is high voltage transmission line or high-voltage line row respectively.High-voltage line row's voltage can be 330kV, 220kV, 110kV, 45kV, 10kV, 3kV, 1kV.
In conjunction with Fig. 1; Second kind of condenser type electric supply installation of the present invention based on high voltage electric field; Comprise energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high voltage transmission line, metallic object and the earth, and metallic object is arranged between high voltage transmission line and the earth through insulated wire; Make and form distributed capacitance between metallic object and high voltage transmission line, the earth respectively, metallic object, high voltage transmission line are respectively as the input of collection of energy module.
In conjunction with Fig. 2; The third condenser type electric supply installation based on high voltage electric field of the present invention comprises energy acquisition module and collection of energy module, and the collection of energy module comprises overvoltage crowbar, energy-trap chip; The energy acquisition module comprises high-voltage line, metallic object and electric capacity; Wherein a phase high-voltage line is connected with an end of electric capacity, and metallic object is connected with the other end of electric capacity, makes metallic object form distributed capacitance mutually between the high-voltage line with another; The two ends of electric capacity are as the input of collection of energy module, and high-voltage line is high voltage transmission line or high-voltage line row.
In conjunction with Fig. 2, the 4th kind of condenser type electric supply installation based on high voltage electric field of the present invention comprises energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip; The energy acquisition module comprises high voltage transmission line, metallic object, the earth and electric capacity, and wherein high voltage transmission line is connected with an end of electric capacity, and metallic object is connected with the other end of electric capacity; Make between metallic object and the earth and form distributed capacitance, the two ends of electric capacity are as the input of collection of energy module.
Above-mentioned four kinds of condenser type electric supply installations based on high voltage electric field; Energy-trap chip is that direct current is when imported; In the collection of energy module, increase rectification circuit; Overvoltage crowbar is connected with rectification circuit, and rectification circuit is connected with energy-trap chip, and overvoltage crowbar is as the input of collection of energy module; When energy-trap chip was ac-input type, overvoltage crowbar was as the input of collection of energy module, and directly was connected with energy-trap chip.The electric energy that apparatus of the present invention are obtained has characteristics such as high output impedance, high voltage, little electric current.And consider these factors such as the characteristic of high-tension electricity and the possible voltage that causes owing to natural calamities such as thunderbolts raise, big electric current, and need build overvoltage crowbar, safely and steadily run to guarantee apparatus of the present invention.
The purpose that the condenser type electric supply installation that the present invention is based on high voltage electric field is provided with metallic object is to obtain ceiling capacity under the premise that security is guaranteed, and its material, shape and determining dimensions are high pressure rank, application scenario, energy-trap chip input range, the loading demands according to high-voltage line and satisfy the high-voltage line safety standard and consider to confirm.The material of above-mentioned metallic object can be copper, iron or metal alloy etc., and shape can be metallic plate, hollow ball, hollow hemisphere, hollow ellipsoids, hollow cuboid or becket, and its area size can be at 2cm
2To 250cm
2Between.The position of metallic object can be chosen according to the kind and the concrete condition of high-voltage line.In above-mentioned four kinds of condenser type electric supply installations based on high voltage electric field, if high-voltage line is high-voltage line row, 5mm can arranged between the 25mm apart from one of them high-voltage line in the position of metallic object; If high-voltage line is a high voltage transmission line, the position of metallic object can apart from high voltage transmission line 5mm wherein between the 100mm.
In above-mentioned the 3rd, the 4th kind of condenser type electric supply installation based on high voltage electric field; The appearance value size of electric capacity depends on that the condenser type electric supply installation is applied in high-voltage line, the high-voltage line grand style is closed; The selection of appearance value depends on that factor mainly contains the input characteristics of application scenario, high pressure rank, energy-trap chip, the demand of load etc.Energy-trap chip is according to being somebody's turn to do based on the high impedance of the condenser type electric supply installation of high voltage electric field, the output characteristic of little electric current; Need choose the direct current of coupling high input impedance, low-level source or exchange intake and collect chip; The energy-trap chip MAX17710 of MAXIM company for example; This IC is that direct current is imported, can manage output area from the extremely faint energy source of 1 μ W to 100mW power, and chip typical case input charging voltage is low to moderate 0.75V; Minimum charge current 625nA; The perhaps Enter Chip CC CBC3150 energy-trap chip of CYMBET Corp., the energy storage module of inner integrated 50uAh capacity, the typical input voltage range of chip is 2.5V to 5.0V; The energy-trap chip LTC3588 of LINEAR company is an ac-input type, and the typical input voltage range 2.7V of chip is to 20V, minimum charge current 950nA.If high-voltage line is high-voltage line row, adopt 10pF to the electric capacity between the 150nF, 5mm is being arranged between the 25mm apart from one of them high-voltage line in the metallic object position; If high-voltage line is a high voltage transmission line, adopt 10pF to the electric capacity between the 10nF, the metallic object position apart from high voltage transmission line 5mm wherein between the 100mm.
Above-mentioned six kinds of technical schemes belong to " obtain the energy of electric field through the dividing potential drop of two series capacitances forming; the energy that is obtained through overvoltage crowbar and optional rectification circuit after; energize is collected chip and is collected, stores " total inventive concept, have the specified features of energy acquisition module and collection of energy module.Therefore, between five kinds of technical schemes be meet monistic, can concurrent application.
Narrating is that the energy acquisition module that the present invention is based on the condenser type electric supply installation of high voltage electric field has designed two kinds of structures, and first kind as shown in Figure 1, between high-voltage line two phases; Or between high voltage transmission line and the earth; Put into metallic object, and metallic object and high-voltage line or and ground between have distributed capacitance, C0 promptly as shown in Figure 1, C1; Wherein C0 is the equivalent capacity that forms between metallic object and the high-voltage line; And C1 is a metallic object and another equivalent capacity of forming of high-voltage line mutually, and perhaps C0 is the equivalent capacity that forms between metallic object and the high voltage transmission line, and C1 is the equivalent capacity that forms between metallic object and the earth; Another kind of as shown in Figure 2, directly connect an end of a definite capacitor C 0 at high-voltage line, at metallic object of electric capacity other end connection.According to existing with the air between metallic object and another phase high-voltage line is the equivalent capacity C1 of medium, and perhaps high voltage transmission line directly connects an end of a definite capacitor C 0, connects a metallic object at the electric capacity other end.According to existing with the air between metallic object and the earth is the equivalent capacity C1 of medium.Like this by high-voltage line, metallic object and another phase high-voltage line; Or the system that constitutes of high voltage transmission line, metallic object and the earth just can equivalence pass through two equivalent series electric capacity and another high-voltage line formation loop mutually for high-voltage line; Or high voltage transmission line just can obtain the energy of electric field through two equivalent series electric capacity and the earth formation loop through the dividing potential drop of two electric capacity.The material of metallic object, size and determining dimensions need be considered the rank of high-voltage line transmission of electricity, fail safe, the factors such as requirement of application scenario and load energy.Characteristic according to electric capacity; The shape of metallic object and and high-voltage line or greatly between distance affects to the size of distributed capacitance; The size of electric capacity only with shape, size, relative position and the conductor of conductor between medium relevant; Through consulting relevant document, the computing formula of the distributed capacitance on the high-voltage line of the 1.8th economize on electricity appearance and partition capacitance and ground in use Feng Cizhang and Ma Xikui chief editor " engineering electromagnetic field introduction ":
Use in " high-voltage electrostatic field " that Xie Guangrun writes between 2.4 joints, two parallel cylinder electrodes the computing formula of electric field to calculate the distributed capacitance between high-voltage line, formula thes contents are as follows:
(7)
" a kind of contactless overvoltage sensor of overhead transmission line " adopts the connection in series-parallel method of electric capacity to calculate the stray capacitance value about irregular capacitor the two poles of the earth shape is similar to simplification in the paper of use Du Lin, Chang Afei.For ease of analyzing and calculating, overhead transmission line is done to simplify as follows and handle.Ignore the influence of transmission line end effect and sag, transmission line is regarded as unlimited long straight conductor, and parallel to the ground.When carrying out electric capacity calculating, radius is that the transmission pressure of r can equivalence be that 2 r, length are the thin long band of L for width.Metallic object for example metallic plate length is a, and wide is b.Between 2 pole plates, get one parallel with pole plate, the distance be the plane of Δ z, its area is S, so just having formed area is S, spacing is Δ z, be the unit tablet capacitor of medium with the air, and the electric capacity of this unit tablet capacitor is:
We can be aerial condutor connecting of a plurality of tablet condenser capacitances with the capacitor equivalent of responding between metallic plate:
According to the characteristic of series capacitance, the inverse of its distributed capacitance is the inverse of a plurality of series connection tablet condenser capacitances and is the integration of Δ z on zero to h (annotating: lead and the height of responding between the metallic plate):
According between the high voltage transmission line or with ground, have the principle of distributed capacitance between the high-voltage line row, be that example specifies the situation that high-voltage line row two puts into metallic object between mutually with high-voltage line row.In high-tension switch cabinet, high-voltage line is arranged general vertical parallel and is placed, and we elect becket as metallic object, suppose that the three-phase high-voltage line is arranged all to be inserted in becket, and its model is as shown in Figure 3.
Our its equivalent circuit diagram that draws according to model is seen shown in Figure 4.
Becket and three-phase high-voltage line row constitutes a static autonomous system like this; The width of supposing given high-voltage line row is 10cm, and horizontal range is 15cm between the high-voltage line row, and the becket terrain clearance is 50cm; Ring diameter is 11cm; Width is 2cm, and the high pressure grade is 10KV, can calculate according to formula 1,2,4,5:
Can get according to formula 3:
Here only consider two situation between the high-voltage line row; With high-voltage line row A is example with B mutually mutually; Regard the B equivalent as ground; Phase relation in conjunction with between A, B two phases is an equivalent voltage source
with A, B two equivalent, is transformed to as shown in Figure 5.
Can get according to formula 7:
The output electric energy at
two ends is the energy source of energy-trap chip, and is as shown in Figure 6.
The collection of energy module is become an impedance
with load equivalent, Fig. 6 can further be reduced to Fig. 7.
Regard the output at
two ends as a voltage source, then the internal impedance of this power supply is:
Impedance matching principle in the circuit theory is told us, and when load impedance and the internal resistance of source were complementary, load obtained maximum power.Can push away, the impedance matching principles and requirements:
Because
is artificial given, so just might reach impedance matching through adjustment
.Suppose
for 20K, can in the hope of:
Because
is very little with respect to
, so
.At this moment; The output voltage at
two ends is that peak value is the sinusoidal voltage of 2.0V, and power output does
According to the voltage and the power output characteristic at
two ends, can select the energy-trap chip that matches.For example the MAX17710 energy-trap chip of MAXIM company is fit to multiple energy source input like high-voltage power supply, low pressure source, possesses the boost type charging ability that is low to moderate 1uW, and it also has the function of maximum power tracing, and voltage in several modes is selected.The sinusoidal voltage source of 2V peak value, 0.1mW is in the input range of this chip.In addition; The actual high-voltage measuring system does not need continuous operation usually; Can be discontinuous operation; And the required energy of the measuring system one action of super low-power consumption own is very little; So the present invention can collect the faint electric energy of
two ends output, accumulation stores, and realizes giving the measuring system intermittent power supply.
Other three kinds of situation can explain also that according to the method described above the present invention can solve the technical problem into the power supply of high pressure auxiliary device safety and stability.
Claims (7)
1. condenser type method of supplying power to based on high voltage electric field; It is characterized in that between high-voltage line two phases, putting into metallic object; Make between metallic object and the high-voltage line and form distributed capacitance; The system that described two phase high-voltage lines, metallic object constitute is that a phase high-voltage line is connected to another phase high-voltage line composition loop through two equivalent series electric capacity with regard to equivalence, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field, and the energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores; Power demand situation during according to loaded work piece is supplied power, and behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained, energize is collected chip and collected, stores; Power demand situation during according to loaded work piece is supplied power, and described high-voltage line is high voltage transmission line or high-voltage line row.
2. condenser type method of supplying power to based on high voltage electric field; It is characterized in that between a high voltage transmission line and the earth, putting into metallic object; Make metallic object form distributed capacitance respectively and between the high voltage transmission line, the earth, the system that described high voltage transmission line, metallic object, the earth constitute just equivalence forms the loop for high voltage transmission line is connected to the earth through two equivalent series electric capacity, and the dividing potential drop of two equivalent series electric capacity that form is by the way obtained the energy of electric field; The energy that is obtained is through behind the overvoltage crowbar; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power, behind the energy process overvoltage crowbar and rectification circuit that is perhaps obtained; Energize is collected chip and is collected, stores, and the power demand situation during according to loaded work piece is supplied power.
3. condenser type electric supply installation based on high voltage electric field; It is characterized in that comprising energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip; The energy acquisition module comprises high-voltage line, metallic object, metallic object through insulator be arranged on high-voltage line two mutually between, make metallic object and high-voltage line two form distributed capacitance respectively between mutually; Metallic object, wherein a phase high-voltage line is respectively as the input of collection of energy module, and high-voltage line is high voltage transmission line or high-voltage line row.
4. condenser type electric supply installation based on high voltage electric field; It is characterized in that comprising energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high voltage transmission line, metallic object and the earth, and metallic object is arranged between high voltage transmission line and the earth through insulated wire; Make and form distributed capacitance between metallic object and high voltage transmission line, the earth respectively, metallic object, high voltage transmission line are respectively as the input of collection of energy module.
5. condenser type electric supply installation based on high voltage electric field; It is characterized in that comprising energy acquisition module and collection of energy module; The collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high-voltage line, metallic object and electric capacity, and wherein a phase high-voltage line is connected with an end of electric capacity; Metallic object is connected with the other end of electric capacity; Make metallic object form distributed capacitance mutually between the high-voltage line with another, the two ends of electric capacity are as the input of collection of energy module, and high-voltage line is high voltage transmission line or high-voltage line row.
6. condenser type electric supply installation based on high voltage electric field; It is characterized in that comprising energy acquisition module and collection of energy module, the collection of energy module comprises overvoltage crowbar, energy-trap chip, and the energy acquisition module comprises high voltage transmission line, metallic object, the earth and electric capacity; Wherein high voltage transmission line is connected with an end of electric capacity; Metallic object is connected with the other end of electric capacity, makes between metallic object and the earth and forms distributed capacitance, and the two ends of electric capacity are as the input of collection of energy module.
7. according to claim 3,4,5 or 6 described condenser type electric supply installations based on high voltage electric field; It is characterized in that energy-trap chip is that direct current is when imported; In the collection of energy module, increase rectification circuit; Overvoltage crowbar is connected with rectification circuit, and rectification circuit is connected with energy-trap chip, and overvoltage crowbar is as the input of collection of energy module; When energy-trap chip was ac-input type, overvoltage crowbar was as the input of collection of energy module, and directly was connected with energy-trap chip.
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| CN103376125A (en) * | 2013-05-23 | 2013-10-30 | 杭州休普电子技术有限公司 | Wireless electric field energy collection sensor |
| CN106887898A (en) * | 2017-03-31 | 2017-06-23 | 广东电网有限责任公司电力科学研究院 | A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supply method and system on-line |
| CN107546859A (en) * | 2017-09-12 | 2018-01-05 | 深圳市特力康科技有限公司 | The device that the online electric microfield of electric line can be collected |
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| JP2009291013A (en) * | 2008-05-29 | 2009-12-10 | Chugoku Electric Power Co Inc:The | Power supply unit |
| US8013667B2 (en) * | 2009-03-18 | 2011-09-06 | Kabushiki Kaisha Toshiba | Voltage generating circuit for electrostatic MEMS actuator |
| CN202026161U (en) * | 2011-04-19 | 2011-11-02 | 辽宁省电力有限公司鞍山供电公司 | High-tension electric field power taking device |
| CN202475305U (en) * | 2011-11-25 | 2012-10-03 | 南京航空航天大学 | Capacitive power supply device based on high-voltage electric field |
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| CN102862400A (en) * | 2012-09-29 | 2013-01-09 | 富美科技集团有限公司 | Heat radiation device for laser printer |
| CN103376125A (en) * | 2013-05-23 | 2013-10-30 | 杭州休普电子技术有限公司 | Wireless electric field energy collection sensor |
| CN106887898A (en) * | 2017-03-31 | 2017-06-23 | 广东电网有限责任公司电力科学研究院 | A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supply method and system on-line |
| CN107546859A (en) * | 2017-09-12 | 2018-01-05 | 深圳市特力康科技有限公司 | The device that the online electric microfield of electric line can be collected |
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Application publication date: 20120613 |