CN204030665U - A kind of self-service electric power system of general frame structure - Google Patents
A kind of self-service electric power system of general frame structure Download PDFInfo
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- CN204030665U CN204030665U CN201420425639.XU CN201420425639U CN204030665U CN 204030665 U CN204030665 U CN 204030665U CN 201420425639 U CN201420425639 U CN 201420425639U CN 204030665 U CN204030665 U CN 204030665U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
A self-service electric power system for general frame structure, belongs to emergency power supply field.Comprise the piezoelectric vibration energy gatherer group, rectification circuit, charging circuit and the storage battery that connect successively; Its piezoelectric vibration energy gatherer group comprises multiple piezoelectric vibration energy gatherer, and multiple piezoelectric vibration energy gatherer is arranged in a general frame structure; General frame structure is fixed on the body of transformer or the accessory structure of transformer; Multiple piezoelectric vibration energy gatherer is parallel-connection structure on circuit; The electric energy output end of piezoelectric vibration energy gatherer group, successively through rectification circuit and charging circuit, correspondingly with the positive and negative electrode of storage battery to connect; The positive and negative electrode of described storage battery, through a control switch, correspondingly with the DC supply input of transformer station's emergency lighting system or primary line way switch DC operating system to connect.It can realize the emergency lighting under malfunction, makes full use of the vibrational energy of transformer, contributes to saving energy and reduce the cost, and improves substation operation coefficient of safety.
Description
Technical field
The utility model belongs to emergency power supply field, particularly relates to a kind of self-service electric power system for transformer station.
Background technology
Transformer station changes the place of voltage before being the electricity conveying sent in power plant.
In existing transformer station, emergent accident illuminator as a kind of standard configuration, is widely used.
The emergent accident illuminator of a standard, is made up of a set of ac-dc converting means, at least one group storage battery and the emergence lighting lamp etc. that is distributed in each crucial lighting point usually.When the station AC power supply system of transformer station is normal, emergent accident illuminator to be powered by AC power supply system by standing, batteries in emergent accident illuminator is charged, once the station AC power of transformer station disappears, then the batteries (also known as direct current system) being in charged state at ordinary times to be put into operation state by commutation circuit (or control switch) by transformer station's emergent accident illuminator automatically, the power output end of batteries is powered to each emergence lighting lamp, guarantees required illumination in the state of accident.
Existing various emergent accident illuminator, its operation principle is in fact similar with computer UPS device, all when AC power has electricity, by AC power, batteries is charged, when AC power dead electricity, batteries proceeds to operating state, for emergence lighting lamp or system provide emergency power supply, ensures in emergency circumstances required minimum and necessary brightness of illumination.
Along with the development of lighting technology, the lighting of various employing LED arises at the historic moment, such as, publication date is on 03 12nd, 2014, publication number is in the Chinese invention patent application of CN103632621A, disclose one " energy-saving LED emergency lighting and equipment nameplate one label ", its label body is transparent light guide panel, is marked with device numbering at transparent light guide panel; Around transparent light guide panel, LED is set; The exiting surface of LED is towards transparent light guide panel; LED is connected with the power supply of transformer station emergent accident lighting device through wire.After transformer station's emergent accident lighting device starts, LED obtains electroluminescence, illuminate the device numbering on transparent light guide panel, help operating personnel to carry out reading correct rapidly to device numbering famous brand, and provide accident emergency lighting source to position, label place.Its transparent light guide panel both can display device numbering word, can be used as again planar light source and illuminate surrounding enviroment, the misoperation of operations staff can be avoided, make use of illumination energy to greatest extent, make emergent accident lighting device and device numbering famous brand two one, play double action.
Transformer noise is by body construction design, type selecting layout, installation, use procedure, the machinery noise that is irregular, that cause intermittently, continuously or at random that transformer body and cooling system produce and airborne noise summation.
Specifically, the noise that transformer body vibration produces has its source in:
(1) core vibration that causes of the magnetostriction of silicon steel sheet;
(2) there is the electromagnetic attraction produced because of leakage field between silicon steel sheet seam crossing and lamination and cause the vibration of iron core;
(3) when have in Transformer Winding load current by time, the leakage field that load current produces causes the vibration of coil, oil tank wall.
Along with the development of economy, the fossil energy such as coal, oil resource reduces day by day because constantly consuming, and various regenerative resource is all being greatly developed in countries in the world, ites is desirable to the energy can recycled in environment to be carried out collecting and changing.Piezoelectric vibration energy gatherer is exactly a kind of device realizing this function, and it is by piezoelectric (normally piezoelectric ceramic) " piezoelectric effect ", the various vibrational energies in environment is collected and is converted to electric energy.
Piezoelectric ceramic is a kind of ceramic material mechanical energy and electric energy can changed mutually.So-called " piezoelectric effect " refers to that some medium is when being subject to mechanical pressure, even this pressure is small as acoustic vibration, all can produce the change of shape such as compression or elongation, cause dielectric surface charged, this is direct piezoelectric effect.Otherwise apply excitation electrical field, medium will produce mechanical deformation, claim inverse piezoelectric effect.
If " piezoelectric effect " can be utilized to prepare the self-service electric power system of one based on piezoelectric vibration energy gatherer, the vibrational energy of transformer is collected and stores, piezoelectric vibration energy gatherer is combined with the emergency lighting system of transformer station, when transformer station breaks down, in time for emergency-lighting set is powered, both can realize the emergency lighting under malfunction, and improve breakdown repair efficiency, guarantee personal safety and device security; Can make full use of again the vibrational energy of transformer, turn waste into wealth, contribute to saving energy and reduce the cost, reduce the cost of operation maintenance work, the realization of its design and completing, the economical operation tool for transformer station is of great significance.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of self-service electric power system of general frame structure, it adopts array piezoelectric vibration energy gatherer as energy gathering apparatus, installed, be fixed on the assigned address of transformer body or its accessory structure, collect the energy that transformer vibration produces under resonance condition, for the emergency operation of transformer station's Emergency Light and primary line way switch, both the emergency lighting under malfunction can have been realized, improve breakdown repair efficiency, guarantee personal safety and device security; The vibrational energy of transformer can be made full use of again, turn waste into wealth, contribute to saving energy and reduce the cost, improve the coefficient of safety of substation operation.
The technical solution of the utility model is: the self-service electric power system providing a kind of general frame structure, is characterized in that: described self-service electric power system comprises the piezoelectric vibration energy gatherer group, rectification circuit, charging circuit and the storage battery that connect successively; Described piezoelectric vibration energy gatherer group comprises multiple piezoelectric vibration energy gatherer, and described multiple piezoelectric vibration energy gatherers are arranged in a general frame structure; Described general frame structure is fixed on the body of transformer or the accessory structure of transformer; Described multiple piezoelectric vibration energy gatherers are parallel-connection structure on circuit; The electric energy output end of described piezoelectric vibration energy gatherer group, successively through described rectification circuit and charging circuit, correspondingly with the positive and negative electrode of described storage battery to connect; The positive and negative electrode of described storage battery, through a control switch, correspondingly with the DC supply input of transformer station's emergency lighting system or primary line way switch DC operating system to connect.
Concrete, described general frame structure, is arranged on the connecting rod place between the spray bar of transformer and body.
General frame structure described in it is one with the rectangular frame structure of multiple tabula, between every two tabulas, is fixed with multiple described piezoelectric vibration energy gatherer, overallly forms an array piezoelectric vibration energy gatherer group.
Piezoelectric vibration energy gatherer described in it is Bicrystal junction structure piezoelectric vibration energy gatherer, drum organization piezoelectric vibration energy gatherer or big cymbals structure piezoelectric vibration energy gatherer.
Further, the rectification circuit described in it is voltage doubling rectifing circuit.
Charging circuit described in it is the charging circuit of the fast mold filling formula of current limliting-constant voltage.
Storage battery described in it is lithium battery.
Compared with the prior art, the utility model has the advantages that:
1. adopt array piezoelectric vibration energy gatherer group, this array piezoelectric vibration energy gatherer group is fixed on the assigned address on transformer, collect transformer under resonance condition and vibrate the energy produced, for the emergency operation of transformer station's Emergency Light and primary line way switch, not only reach energy-conservation effect, transformer is also had to the function of vibration and noise reducing simultaneously;
2. adopt the general frame structure that can be fastened on vibration source, by multiple piezoelectric vibration energy gatherer composition array architecture, be fixed in general frame structure, to improve its electric energy fan-out capability;
3. whole self-service electric power system both can realize the emergency lighting under malfunction, can make full use of again the vibrational energy of transformer, turn waste into wealth, also can realize the function of vibration and noise reducing to transformer.
Accompanying drawing explanation
Fig. 1 is the circuit module schematic diagram of the self-service electric power system of the utility model;
Fig. 2 is the structural representation of the utility model general frame structure;
Fig. 3 is the end view of Fig. 2;
Fig. 4 is the actual installation structural representation of general frame structure;
Fig. 5 is the structural representation of the utility model Bicrystal junction structure piezoelectric vibration energy gatherer;
Fig. 6 is the structural representation of the utility model big cymbals structure piezoelectric vibration energy gatherer;
Fig. 7 is the structural representation of the utility model drum organization piezoelectric vibration energy gatherer;
Fig. 8 is the line map of the utility model charging circuit embodiment.
In figure, 1 is piezoelectric vibration energy gatherer, 2 is general frame structure, and 2-1 is the screw arbor assembly with tubular distance piece, and 2-2 is clamping plate, 2-3 is connecting rod, 3 is vibration source, and 4 is mass loading, and 5-1 is the first piezoelectric monocrystal sheet, 5-2 is the second piezoelectric monocrystal sheet, 6 is substrate, and 7-1 is upper metal cap, and 7-2 is lower metal cap, 8 is relaxor ferroelectric monocrystal sheet, 9 is copper ring, and 10-1 is upper copper sheet, and 10-2 is lower copper sheet, 11 is circular piezoelectric single-chip, 12 is copper billet mass loading, and K1 is the automatic control switch that emergency lighting system controls, and K2 is control switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
In Fig. 1, the technical solution of the utility model provides a kind of self-service electric power system of general frame structure, and the self-service electric power system described in it comprises the piezoelectric vibration energy gatherer group, rectification circuit, charging circuit and the storage battery that connect successively.
As shown in the figure, between storage battery source output terminal and the LED of serving as emergency lighting system light emitting source, be serially connected with the automatic control switch K1 that emergency lighting system controls; Or, between storage battery source output terminal and primary line way switch emergency operation power input, be serially connected with control switch K2.
The electric energy output end of described piezoelectric vibration energy gatherer group, through described rectification circuit, charging circuit, correspondingly with the positive and negative electrode of described storage battery to connect.
Piezoelectric vibration energy gatherer group described in it, for collecting the energy that transformer vibration produces under resonance condition, and utilizes " piezoelectric effect " to be converted into electric energy.
Self-service confession electric system in the technical program, by described rectification circuit, by the electric energy collected by described piezoelectric vibration energy gatherer group, converts stable, controllable direct current energy to, sends in storage battery carry out stored energy through described charging circuit.
By in the power output end of the described storage battery access emergency lighting system of transformer station or the DC operating system of a switch; When the Exchange Station power loss of transformer station, emergency lighting system is by controlling the automatically closed of automatic control switch K1, connect the power output end of described storage battery, described self-service electric power system provides power supply for LED, realizes the emergency lighting function of transformer station.Or when the DC operating system power loss of transformer station, by Closed control K switch 2, the operation that described self-service electric power system is transforming plant primary line switching provides emergency operation DC power supply.
Self-service electric power system described in the technical program, based on the piezoelectric vibration energy gatherer with " piezoelectric effect ", under piezoelectric vibration energy gatherer group is in resonance condition, collects transformer vibrates the energy produced, adopt storage battery the vibrational energy of transformer to be collected and store; Using the Emergency Light power supply of storage battery as transformer station or the emergency operation power supply of primary line way switch; Transformer station break down or its Exchange Station power loss time, in time for emergency lighting is powered, or provide emergency operation power supply for primary line way switch; Both can realize the Emergency Light under malfunction, and improve breakdown repair efficiency, guarantee personal safety and device security; The vibrational energy of transformer can be made full use of again, turn waste into wealth, contribute to saving energy and reduce the cost, reduce the cost of operation/maintenance work, reach energy-saving and cost-reducing effect, reduce operating cost, improve the coefficient of safety of substation operation.
In Fig. 2 and Fig. 3, aforesaid piezoelectric vibration energy gatherer group comprises multiple piezoelectric vibration energy gatherer 1, and multiple piezoelectric vibration energy gatherer is fixed in a general frame structure 2.
Described general frame structure, it is a frame structure with multiple tabula, between every two tabulas, be fixed with multiple piezoelectric vibration energy gatherer 1, one end of each multiple piezoelectric vibration energy gatherer is fixed on described tabula, when the vibrational energy that transformer produces passes through general frame structure conduction to each piezoelectric vibration energy gatherer, each piezoelectric vibration energy gatherer, by received mechanical oscillation, is converted to electric energy and exports.
As shown in Figure 3, described frame structure can arrange multiple, is fixed as one between each frame structure by the screw arbor assembly 2-1 with tubular distance piece.
Described multiple piezoelectric vibration energy gatherers are parallel-connection structure on circuit, it can be avoided on the one hand the damage because of or the several piezoelectric vibration energy gatherer in local and affect the output of overall electric energy, on the other hand, adopt parallel-connection structure, larger electric current can be exported, for follow-up rectification circuit or charging circuit provide larger operating current, to meet the charging current requirement of storage battery.
Described general frame structure and the accessory structure of described transformer body or transformer are connected to one, and by the vibrational energy that described transformer produces, are passed to described multiple piezoelectric vibration energy gatherers.
In Fig. 4, connecting rod 2-3 place between described transformer spray bar and body, be vertically arranged with the aforesaid general frame structure of at least two groups respectively, between two groups of general frame structures, through clamping plate 2-2 and fastening bolt, fix as one with connecting rod, form the vibration energy harvesting assembly of double end dumbbell type structure, the multiple piezoelectric vibration energy gatherer vibrations described in drive, generating.
As shown in this figure, at the upper and lower of connecting rod 2-3, some groups of (being equivalent to even number) general frame structures are set all symmetrically, such one side as much as possiblely can arrange multiple general frame structure, form a group pattern vibration energy harvesting modular construction, on the other hand, the resonance frequency problem of general frame structural entity part is also related to.
Because piezoelectric vibration energy gatherer in the technical program is under resonance condition (referring to that resonance frequency is the vibration applications environment of 100Hz), make the piezoelectric vibration energy gatherer group vibration described in the drive of general frame structure, generating, therefore suitable general frame construction weight will be chosen, the vibration frequency of its resonance frequency and the fixing transformer body at general frame structure place or the accessory structure of transformer is matched, only in this way, piezoelectric vibration energy gatherer just can be made to be in optimum vibration frequency, to export maximum power.
During actual enforcement, first can make a single-store frame, the piezoelectric vibration energy gatherer of some to be fixed on single-store frame (such as, each single-store frame installs piezoelectric vibration energy gatherer 3 row respectively, often row 3, totally 9), then with the screw arbor assembly 2-1 with tubular distance piece multiple single-store frame run through and tighten together, be i.e. the vibration energy harvesting assembly of forming array formula.
Learnt by test, the spray bar of transformer and the vibration acceleration of body connecting rod are at 0.4m/s
2left and right, the vibration of transformer is maximum with 100Hz frequency accounting.
From the viewpoint of oscillation intensity and installation difficulty two, select the connecting rod place of spray bar and body, the position that frame structure is fixing as a whole, general frame structure (being referred to as power generation part) with multiple piezoelectric vibration energy gatherer is arranged on this connecting rod, drives power generation part vibrating power-generation by connecting rod.
Because the resonance frequency of bar linkage structure is far above the frequency 100Hz of transformer body vibration source.After general frame structure (power generation part) is arranged on connecting rod, power generation part is as mass loading, the resonance frequency of bar linkage structure can decline, if resonance frequency can drop to just 100Hz, then general frame structure can receive the vibration of maximum intensity, in other words, it can absorb the vibration of maximum intensity.
Simulated and field measurement by finite element simulation, for the main transformer of a 35kV, its power generation part gross mass (weight) is 13.6kg; On connecting rod position between transformer spray bar and body, distance body 8.6cm place is best position.
In Fig. 5, the piezoelectric vibration energy gatherer of the technical program can adopt Bicrystal junction structure piezoelectric vibration energy gatherer.
The structure of Bicrystal junction structure piezoelectric vibration energy gatherer consists of bonding piezoelectric monocrystal sheet 5-1, a 5-2 each on the upper and lower surface of a laminar substrate 6 (for sheet metal) (namely usually alleged piezoelectric layer or piezoelectric patches), and the area of piezoelectric monocrystal sheet is usually equal with sheet metal or be slightly smaller than sheet metal.
One end of described twin lamella is fixed on vibration source 3 and vibrates with vibration source, and the other end is adhesively fixed with mass loading 4.
In Fig. 6, the piezoelectric vibration energy gatherer of the technical program can also adopt big cymbals structure piezoelectric vibration energy gatherer.
The structure of its big cymbals structure piezoelectric vibration energy gatherer is made up of with the upper metal cap 7-1 and lower metal cap 7-2 being fixed in its upper and lower surface the relaxor ferroelectric monocrystal sheet 8 of centre.
After the metal cap of relaxor ferroelectric monocrystal sheet side (copper cap) is fixed on vibration source, the copper cap of opposite side bonds copper billet (being equivalent to aforesaid mass loading) time, the vibration mode that copper cap top displacement is larger is suppressed, from its impedance spectrum, along with the increase of mass loading, resonance point moves to low frequency direction, and the device output impedance corresponding to resonance point increases, therefore the external build-out resistor that power output reaches needed for maximum increases.
In Fig. 7, the piezoelectric vibration energy gatherer of the technical program can also adopt cydariform piezoelectric structure energy harvester.
Its cydariform piezoelectric structure energy harvester is by the copper ring 9 of centre, be positioned at the upper copper sheet 10-1 on the upper and lower surface of copper ring, lower copper sheet 10-2, on upper copper sheet, bonding fixes a circular piezoelectric single-chip 11 (PMNT single-chip) again, be fixed on vibration source by the lower surface of cydariform piezoelectric structure energy harvester, in the center of upper surface, bonding fixes a copper billet mass loading 12.
During actual enforcement, the upper and lower copper sheet of diameter 25mm, thick 0.15mm is stained with in the copper ring upper and lower surface of external diameter 23mm, internal diameter 21mm, high 3mm, upper copper sheet is stained with the circular piezoelectric single-chip (PMNT single-chip) of diameter 17mm, thick 0.5mm again, the lower surface of cydariform piezoelectric structure energy harvester is fixed on vibration source, thereon surface center glue a diameter 5mm, quality 0.5g copper billet as mass loading.
The resonance frequency of this kind of cydariform piezoelectric structure energy harvester structure is about 710Hz, and maximum output voltage can reach more than 7V.
Compared with the structure of the structure of Bicrystal junction shown in Fig. 5 piezoelectric vibration energy gatherer, the piezoelectric vibration energy gatherer of this drum organization has its distinctive advantage: on the one hand, this structure does not need the long-armed of cantilever beam structure and the space needed for swing arm, only in drum surface internal vibration very among a small circle up and down, therefore the requisite space that works is smaller, is more suitable for working in the vibration environment in little space; On the other hand, drum organization bottom surface is comparatively large, together with can being bonded and fixed at vibration source better.
In Fig. 8, the charging circuit of the technical program, that the battery proposed according to 20 th century America scientist Maas (J.A.Mas) fills three laws soon, high-impedance behavior in conjunction with piezoelectric carries out the charging circuit improved, this charging circuit take DC-DC converter as core, overcome the instability of the electric energy that electricity generation material exports, can not the shortcoming of manual control, the electric energy that vibrational energy collector is collected is converted to stable, controllable electric energy for charge in batteries.
In whole charging process, cell voltage is by exponentially form increase in time, but battery current is constant-current charging phase in the charging starting stage, and then exponentially form reduces in time.Therefore can predict: charge to battery by a larger current when at the beginning of charging, cell voltage is lower, rear charging current reduces gradually, till being full of.
Concrete, its charging circuit is made up of DC-DC boost chip, resistance R0 ~ R8, adjustable resistance RT, electric capacity C1 ~ C6, diode D1 ~ D4, inductance L 11 and field effect transistor BGA; Wherein, power input INPUT is connected with the AVIN pin of DC-DC boost chip, this power input is also connected with the PVIN pin of DC-DC boost chip through diode D1, this power input is also connected with the CHC pin of DC-DC boost chip through resistance R2, diode D2 simultaneously, also be connected with the EOC pin of DC-DC boost chip through resistance R3, diode D3, and through electric capacity C1 ground connection.
The LVO pin of DC-DC boost chip is connected with NC pin one end with resistance R1 and electric capacity C2, the other end ground connection of electric capacity C2, the other end of resistance R1 is connected with the TP pin of DC-DC boost chip, the other end of resistance R1 is connected with one end of adjustable resistance RT and resistance R0 simultaneously, the other end ground connection of adjustable resistance RT and resistance R0.
The GND pin ground connection of DC-DC boost chip.
The ISET pin of DC-DC boost chip is through resistance R4 ground connection, and the IEOC pin of DC-DC boost chip is through resistance R5 ground connection, and the VAD pin of DC-DC boost chip is through resistance R6 ground connection.
One end of the VBAT pin of DC-DC boost chip and electric capacity C3, electric capacity C6, resistance R8, and the positive pole correspondence of storage battery (representing with battery in figure) connects, construction system load SYSTEM LOAD holds, the minus earth of storage battery.
The other end ground connection of electric capacity C3 and electric capacity C6.
The DRI pin of DC-DC boost chip is connected with the grid G of field effect transistor BGA, the source S of field effect transistor BGA is connected with the PVIN pin of DC-DC boost chip, and hold with load SYSTEM LOAD simultaneously and be connected, the drain D of field effect transistor BGA is connected with the negative pole of one end of inductance L 11, diode D4 and one end of resistance R7 simultaneously, the plus earth of diode D4, the other end of resistance R7 is through electric capacity C4 ground connection.
The other end of inductance L 11 is connected with the SNS pin of DC-DC boost chip, and is connected with the other end of resistance R5, also through electric capacity C5 ground connection simultaneously.
Significantly, this is an inductance type field DC-DC booster circuit, and effect pipe BGA wherein serves as the effect of switching tube.
Its DC-DC boost chip can select the commercially available prod such as LK8811, MAX732 or MC34063A, due to this series products, manufacturer or dealer when buying all can give the service manual of chip product as an addition, wherein have the standard application circuit of its chip, pin numbering/function and test/operational factor, therefore its concrete pin label, function and test.
Adopt the DC-DC booster circuit of the technical program, piezoelectric vibration energy gatherer group (generating body) electricity can be boosted to 3V to two joint lithium battery (350mAh) chargings, as calculated according to the generating body charging current 0.416mA of actual measurement, be full of two joint lithium batteries and about need 70 days, the LED white light of 3 60mW can be driven about 3.88 hours to throw light on.
Above-mentioned DC-DC booster circuit and storage battery are connected to form one, a DC-DC accumulator can be formed.
This DC-DC accumulator not only can serve as the power supply of the transformer station's emergency lighting system adopting LED, also can serve as the emergency operation power supply of primary line way switch.
Because the utility model adopts array piezoelectric vibration energy gatherer as energy gathering apparatus, installed, be fixed on the assigned address of transformer body or its accessory structure, collect the energy that transformer vibration produces under resonance condition, for the emergency operation of transformer station's Emergency Light and primary line way switch, both the emergency lighting under malfunction can have been realized, improve breakdown repair efficiency, guarantee personal safety and device security; The vibrational energy of transformer can be made full use of again, turn waste into wealth, contribute to saving energy and reduce the cost, improve the coefficient of safety of substation operation.
The utility model can be widely used in design, the manufacture field of transformer station's emergency lighting system or primary line way switch emergency operation power supply.
Claims (7)
1. a self-service electric power system for general frame structure, is characterized in that:
Described self-service electric power system comprises the piezoelectric vibration energy gatherer group, rectification circuit, charging circuit and the storage battery that connect successively;
Described piezoelectric vibration energy gatherer group comprises multiple piezoelectric vibration energy gatherer, and described multiple piezoelectric vibration energy gatherers are arranged in a general frame structure;
Described general frame structure is fixed on the body of transformer or the accessory structure of transformer;
Described multiple piezoelectric vibration energy gatherers are parallel-connection structure on circuit;
The electric energy output end of described piezoelectric vibration energy gatherer group, successively through described rectification circuit and charging circuit, correspondingly with the positive and negative electrode of described storage battery to connect;
The positive and negative electrode of described storage battery, through a control switch, correspondingly with the DC supply input of transformer station's emergency lighting system or primary line way switch DC operating system to connect.
2. according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described general frame structure, be arranged on the connecting rod place between the spray bar of transformer and body.
3. according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described general frame structure is one with the rectangular frame structure of multiple tabula, between every two tabulas, be fixed with multiple described piezoelectric vibration energy gatherer, an overall formation array piezoelectric vibration energy gatherer group.
4., according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described piezoelectric vibration energy gatherer is Bicrystal junction structure piezoelectric vibration energy gatherer, drum organization piezoelectric vibration energy gatherer or big cymbals structure piezoelectric vibration energy gatherer.
5., according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described rectification circuit is voltage doubling rectifing circuit.
6., according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described charging circuit is the charging circuit of the fast mold filling formula of current limliting-constant voltage.
7., according to the self-service electric power system of general frame structure according to claim 1, it is characterized in that described storage battery is lithium battery.
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| CN113572388A (en) * | 2021-07-30 | 2021-10-29 | 浙江理工大学 | Piezoelectric energy collecting device and control method |
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| CN113572388A (en) * | 2021-07-30 | 2021-10-29 | 浙江理工大学 | Piezoelectric energy collecting device and control method |
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