CN110556725A - Three-layer box wall reactive compensation active filter - Google Patents
Three-layer box wall reactive compensation active filter Download PDFInfo
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- CN110556725A CN110556725A CN201911006365.4A CN201911006365A CN110556725A CN 110556725 A CN110556725 A CN 110556725A CN 201911006365 A CN201911006365 A CN 201911006365A CN 110556725 A CN110556725 A CN 110556725A
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- 238000007789 sealing Methods 0.000 claims abstract description 93
- 230000035939 shock Effects 0.000 claims abstract description 56
- 238000009413 insulation Methods 0.000 claims abstract description 43
- 239000010410 layer Substances 0.000 claims description 98
- 238000002955 isolation Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 28
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000013016 damping Methods 0.000 description 7
- 230000003750 conditioning effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a reactive compensation active filter with three layers of box walls, wherein a double-layer framework and two layers of frameworks are arranged at intervals of 6-8mm, and the thickness of a wallboard is 2-5mm and is fixed on any side layer framework between the two layers of frameworks; shock insulation strips are arranged at the contact parts of the longitudinally arranged skeleton units and the wallboard inner plate, the wallboard middle plate and the wallboard outer plate, and shock insulation strips are arranged at the contact parts of the transversely arranged skeleton units and the sealing plate inner plate, the sealing plate middle plate and the sealing plate outer plate; the three-layer box wall reactive compensation active filter disclosed by the invention is of a three-layer plate structure based on a double-layer framework, so that high-efficiency sound insulation is realized; the shock insulation strips completely break the integral hard connection of the box body convenient for transmitting the shock; the plates with different thicknesses can reduce the external vibration sense of the active filter generated by the resonance effect; the shrouding medium plate is not filling the clearance between the double-deck skeleton completely, and has the disconnection layer, and the disconnection layer has been isolated from inside to outside vibrations transmission channel, has increased syllable-dividing and shock attenuation effect.
Description
Technical Field
The invention belongs to the field of active filter structures, and particularly relates to a three-layer box wall reactive compensation active filter.
Background
electronic devices often have problems of heat generation and heat dissipation. Without an effective processing method, the efficiency of the electronic device will be reduced or damaged. As a harmonic suppression device, an active filter generates heat seriously, resulting in a greater number of internal fans. In some active filters, multiple cooling methods are arranged in the active filters to cooperate together to achieve effective cooling, and thus the heating condition of the active filters is very serious. For a non-research mechanism, an air conditioner is not generally arranged in a machine room, and the high temperature in the machine room hinders the heat dissipation efficiency of the active filter.
The operation of the active filter is accompanied by noise of the cooling fan and current noise of the components common to the electronic equipment. This noise is very unfavorable to the working environment of maintenance personnel, and is particularly serious when a plurality of active filters are arranged in parallel. Meanwhile, the vibration caused by the operation of the cooling fan is transmitted to the box plate of the active filter. The noise caused by the low frequency vibration generated by the box plate also has adverse effect on the working environment of maintenance personnel. The low frequency vibration of the instrument also affects the reliability of the connection points of various devices in the instrument. How to realize sound insulation and shock absorption on the box wall has great difficulty.
Make bilayer structure can strengthen the syllable-dividing effect with the tank wall, but if after inner wall and/or outer wall mounting original paper, the holistic syllable-dividing effect of tank wall reduces.
Disclosure of Invention
the present invention is directed to overcome the above-mentioned problems in the prior art, and to provide a three-layer box wall reactive compensation active filter.
in order to achieve the technical purpose, the invention adopts the following technical scheme:
A reactive compensation active filter with three layers of box walls comprises a box wall plate, a box sealing plate, a double-layer framework and shock insulation strips.
Two ends of the frame body of the frame unit in the double-layer frame are provided with end threaded holes, and two side walls of the frame body are provided with side threaded hole groups.
the box wall plate includes wallboard inner panel, wallboard medium plate and wallboard planking, and the case shrouding includes shrouding inner panel, shrouding medium plate and shrouding planking.
A double-layer framework array is longitudinally arranged and fixed between the sealing plate inner plates of the two box sealing plates, a gap layer is arranged between the two layers of frameworks of the double-layer framework for 6-8mm, and the thickness of the middle plate of the wall plate is 2-5mm and is fixed on any side layer framework between the two layers of frameworks; the wall plate inner plate and the wall plate outer plate of the wall box plate are fixed on two sides of the longitudinally arranged double-layer framework array, and the interlayer distance between the wall plate inner plate and the wall plate outer plate is 3-5 cm; if the box wall of the active filter is of a single-layer structure, the vibration of an original piece in the active filter is directly transmitted to the box wall. After the wallboard inner panel or wallboard planking are installed the original paper in the setting up of wallboard medium plate, the whole syllable-dividing effect of wall case board is guaranteed. The middle plate of the wallboard does not completely fill the gap layer between the double-layer frameworks, but has a broken layer; the disconnection layer breaks the vibration transmission channel from inside to outside, and the damping effect is enhanced. The typical installation process of the box wall plate and the box sealing plate is as follows: the double-layer framework array which is longitudinally arranged is fixed on a sealing plate inner plate to form a support, then the wallboard inner plate, the wallboard middle plate and the wallboard outer plate are installed on the framework array which is longitudinally arranged, and finally the sealing plate inner plate at the other end of the double-layer framework array which is longitudinally arranged is sealed. Both ends of the outer plate of the wall plate exceed the inner plates of the sealing plates at the upper and lower positions by 3-5 cm.
Double-layer frameworks are transversely arranged on the outer side of a sealing plate inner plate of the box sealing plate, the arrangement interval between the two layers of frameworks of the double-layer frameworks is 6-8mm, the transversely arranged double-layer frameworks are fixedly connected with wall plate outer plates at two ends through screws, the frame side walls of framework units on one side of the transversely arranged double-layer frameworks are matched with the sealing plate inner plate, and the thickness of the plate in the sealing plate is 3-5mm and is fixed on any one layer of framework between the two layers of frameworks; the double-layer frameworks which are transversely arranged are connected with the wallboard outer plates at two ends in an installing mode, and screws penetrate through the wallboard outer plates and the end threaded holes, so that the double-layer frameworks are convenient to disassemble. The transversely arranged double-layer frameworks are connected with the outer plate of the sealing plate and the outer plate of the wall plate in a way of being opposite to the inner plate side of the sealing plate to form a closed box body; when the active filter is disassembled, the box sealing plate is firstly disassembled, and then the box wall plate is disassembled. An electronic system is arranged in the closed box body.
Shock insulation strips are arranged between contact interfaces between the box wall plate and between contact interfaces between the box sealing plate and the box wall plate in a bonding mode; vertically the skeleton unit and the wallboard inner panel of arranging, the wallboard medium plate, the contact site of wallboard planking all is equipped with the shock insulation strip through the mode that bonds, transversely the skeleton unit and the shrouding inner panel of arranging, the shrouding medium plate, the contact site of shrouding planking all is equipped with the shock insulation strip through the mode that bonds, the contact between shock insulation strip with case wallboard and tank wall board, contact between case shrouding and the tank wall board, vertically the skeleton unit and the wallboard inner panel of arranging, the wallboard medium plate, the contact of wallboard planking, transversely the skeleton unit and the shrouding inner panel of arranging, the shrouding medium plate, the contact of shrouding planking is changed into the flexonics, the whole hard connection that will be convenient for transmit vibrations breaks. Due to the structure of the three layers of box walls, contact interfaces between the plate body and the framework units between the active filters are increased, and at the moment, the shock insulation strips are introduced, so that the shock buffering effect is enhanced.
The cavity between the wallboard inner plate and the wallboard middle plate and the cavity between the wallboard middle plate and the wallboard outer plate are filled with shock-absorbing sponge; the cavity between the sealing plate inner plate and the sealing plate middle plate and the cavity between the sealing plate middle plate and the sealing plate outer plate are filled with shock-absorbing sponge. Sound insulation and vibration damping refer to both air and mechanical vibration modes. The shock absorption sponge absorbs shock and noise, and the auxiliary shock insulation strips reduce the external shock sensation of the active filter. When the whole active filter operates, the inside of the active filter is filled with noise generated by the fan and the device, and the sound insulation treatment is only carried out at the air inlet and the air outlet of the active filter, so that the sound insulation treatment is meaningless, and the single-layer box plate structure cannot play a good sound insulation effect. The box wall structure with multiple inner cavities can meet the sound insulation and shock absorption effects on the premise of meeting the strength. The design of the cavity and the shock absorbing sponge enable the amount of heat transferred to the interior through the active filter box wall plate and the box closure plate to be reduced.
The electronic system is by signal conditioning board, a controller, the IGBT drive plate, the IGBT converter, the reactor, filter capacitor, main contactor, fast acting fuse and circuit breaker establish ties in proper order and constitute, it has soft resistance that rises to connect in parallel on the main contactor, it has direct current voltage sensor and direct current bus condenser to connect in parallel on signal conditioning board and the IGBT converter circuit section, direct current voltage sensor and direct current bus condenser series connection, electric wire netting main line isolator closes a floodgate after, for the electric wire netting when preventing to go up the electric shock in the twinkling of an eye of direct current bus condenser, active power filter charges to the condenser of direct current bus through soft resistance that rises at first, this process can last tens of seconds. When the bus voltage Udc reaches a predetermined value, the main contactor is closed. The direct current capacitor is used as an energy storage device, and compensation current is output outwards through the IGBT converter and the internal reactor to provide energy. The active power filter collects current signals in real time through an external CT and sends the current signals to the signal conditioning board, then the current signals are sent to the controller, the controller separates fundamental wave components, extracts all harmonic current and reactive current, compares the collected current components to be compensated with compensation current sent by the active power filter to obtain a difference value, outputs the difference value to the IGBT drive board as a real-time compensation signal, triggers the IGBT converter to inject the compensation current into a power grid, achieves closed-loop control, and achieves a compensation function.
A modularized active filter compensation method combines an active SVG dynamic reactive power compensation device with an impedance type TSC silicon controlled rectifier trigger module device.
1. 10 TSC signal control I/O ports are reserved on the device interface side of the three-phase four-wire SVG of the module 3P4L and are respectively connected to an internal driving level port (the level is more than or equal to DC10V and the driving current is more than or equal to 10 mA) of the TSC silicon controlled trigger module through a flat cable of the control interface;
2.6 sets of TSC silicon controlled trigger modules are connected in parallel, and a control terminal flat cable of the SVG dynamic reactive power compensation device is connected to a switching level port of the TSC silicon controlled trigger module;
The control signals of the 3.6 TSC silicon controlled trigger module modules are respectively K1+, K1-, K2+, K2-, K3+, K3-, K4+, K4-, K5+, K5-, K6+ and K6-, wherein 6 TSC silicon controlled trigger module modules share the ground, and the SVG dynamic reactive power compensation device controller controls the switching signals of the TSC silicon controlled trigger modules.
Preferably, the connection mode of the double-layer frameworks which are longitudinally arranged and the inner plates of the wall plates is bonding, so that the installation is convenient. Rigid connection does not exist between the inner plate of the wallboard and the double-layer framework, and the shock insulation effect between the inner plate of the wallboard and the double-layer framework can be enhanced. The connection mode of the longitudinally arranged double-layer frameworks and the wallboard outer plate is screw connection. The screws penetrate through the outer plate of the wallboard and the side thread hole group, so that the shock absorption sponge is convenient to disassemble, maintain and replace.
preferably, the middle part of the frame body is provided with a hollow part. The fretwork is guaranteed to inhale the circulation of air that shakes the sponge filling intracavity, does benefit to the heat dissipation. Especially, it is more important for the surface on which the heat radiation fan is mounted.
Preferably, the thicknesses of the inner wall plate, the middle wall plate and the outer wall plate are different; the thicknesses of the sealing plate inner plate, the sealing plate middle plate and the sealing plate outer plate are different. When the plates made of the same material have the same thickness, vibration is easily transmitted through resonance. The board of different thickness can reduce the active filter external vibration sense that produces by the resonance effect.
preferably, the thickness of the inner plate of the wallboard is larger than that of the middle plate and the outer plate of the wallboard; the thickness of the inner plate of the sealing plate is larger than that of the middle plate and the outer plate of the sealing plate. The thickness of the inner plate of the wall plate and the inner plate of the sealing plate is large, so that electronic elements can be fixed conveniently.
And the air inlet fan and the air outlet fan are arranged on the inner plates of the wall plates and are aligned with the middle plate grid hole and the outer plate grid hole. The damping sponge in the case wallboard provided with the inlet fan and the outlet fan plays a role in damping and air filtering, and the active filter operates for a period of time and then is detached from the wallboard outer plate to replace the damping sponge. Increased and inhale shake sponge filtration back, must can increase the resistance of admitting air of fan, the suction effect that goes out the fan this moment can produce the negative pressure, supplementary air inlet of fan, reinforcing active filter's radiating effect. The air inlet fan and the air outlet fan are arranged on the inner plate of the wall plate, so that the absorption of the shock absorption sponge to the vibration of the fan is increased.
Preferably, the seismic isolation strip is a polyurethane seismic isolation strip.
Preferably, the shock-absorbing sponge is melamine cotton.
The three-layer box wall reactive compensation active filter provided by the invention has the following beneficial effects:
1. The box body structure of the active filter is integrally detachable, and a three-layer plate structure based on a double-layer framework can realize high-efficiency sound insulation on the premise of ensuring light weight;
2. The shock insulation strips completely break the integral hard connection of the box body convenient for transmitting the shock, thereby realizing the effect of increasing the sound insulation and shock absorption;
3. The shock absorption sponge absorbs shock and noise, and the auxiliary shock absorption strips reduce the shock sensation outside the active filter;
4. The plates with different thicknesses can reduce the external vibration sense of the active filter generated by the resonance effect;
5. the middle plate of the sealing plate does not completely fill the gap between the double-layer frameworks, but has a disconnecting layer which disconnects the vibration transmission channel from inside to outside, thereby increasing the sound insulation and shock absorption effects;
6. The arrangement of the sealing plate middle plate ensures that the integral sound insulation effect of the box sealing plate is ensured after an original paper is installed on the sealing plate inner plate;
7. after the original paper was installed to the setting up of wallboard medium plate messenger on the wallboard inner panel, the whole syllable-dividing effect of wall case board is guaranteed.
Drawings
FIG. 1 is a view of the main body of an active filter according to the present invention;
FIG. 2 is a front view of a skeletal unit of the present invention;
FIG. 3 is a schematic view of the two-layer frame transversely arranged on the outer side of the inner plate of the sealing plate according to the present invention
FIG. 4 is a schematic view of the mounting structure of the box wall panel of the present invention;
FIG. 5 is a schematic view of the mounting arrangement of the container closure plate of the present invention;
FIG. 6 is a partial schematic view of a box wall panel and double layer skeletal frame according to the present invention;
FIG. 7 is a comprehensive SVG and TSC reactive compensation system of the present invention;
FIG. 8 is a switching signal connection diagram of the present invention;
Reference numerals: the box wall plate comprises a box wall plate (1), a wall plate inner plate (101), a wall plate middle plate (102), a middle plate grid hole (1021), a wall plate outer plate (103), a plate grid hole (1031), a box sealing plate (2), a sealing plate inner plate (201), a sealing plate middle plate (202), a sealing plate outer plate (203), a double-layer framework (3), a framework unit (30), a framework body (301), an end threaded hole (302), a side threaded hole group (303), a hollow part (304), a shock insulation strip (4), an electronic system (5), an air inlet fan (6) and an air outlet fan (7).
Detailed Description
the technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-6, a three-layer box wall reactive compensation active filter comprises a box wall plate 1, a box sealing plate 2, a double-layer framework 3 and a shock insulation strip 4.
As shown in fig. 2, end screw holes 302 are provided at both ends of a frame body 301 of the frame unit 30 in the double-layer frame 3, and side screw hole groups 303 are provided on both side walls of the frame body 301.
As shown in fig. 3 to 6, the tank wall panel 1 includes a panel inner panel 101, a panel middle panel 102, and a panel outer panel 103, and the tank sealing panel 2 includes a panel inner panel 201, a panel middle panel 202, and a panel outer panel 203.
a double-layer framework 3 array is longitudinally arranged and fixed between the sealing plate inner plates 201 of the two box sealing plates 2, a clearance layer 6mm is arranged between the two layers of frameworks of the double-layer framework 3, and the wall plate middle plate 102 is 2mm thick and is fixed on any side layer framework between the two layers of frameworks; the inner wallboard plate 101 and the outer wallboard plate 103 of the wall box plate 1 are fixed at two sides of the double-layer framework 3 array which is longitudinally arranged, and the interlayer distance between the inner wallboard plate 101 and the outer wallboard plate 103 is 3 cm. If the box wall of the active filter is of a single-layer structure, the vibration of an original piece in the active filter is directly transmitted to the box wall. The setting of wallboard medium plate 102 makes behind the installation original paper on wallboard inner panel 101 or wallboard outside plate 103, and the whole syllable-dividing effect of wall case board 1 obtains guaranteeing. The wallboard middle plate 102 does not completely fill the gap layer between the double-layer frameworks 3, but has a broken layer; the disconnection layer breaks the vibration transmission channel from inside to outside, and the damping effect is enhanced. The installation process of the typical box wall plate 1 and the box sealing plate 2 is as follows: fixing the longitudinally-arranged double-layer framework 3 array on a sealing plate inner plate 201 to form support, then installing the wallboard inner plate 101, the wallboard middle plate 102 and the wallboard outer plate 103 on the longitudinally-arranged framework 3 array, and finally sealing the sealing plate inner plate 201 at the other end of the longitudinally-arranged double-layer framework 3 array. The size of the sealing plate inner plate 201 of which both ends of the wall plate outer plate 103 exceed the upper position and the lower position is 3 cm.
The double-layer frameworks 3 are transversely arranged on the outer sides of the sealing plate inner plates 201 of the box sealing plate 2, the interval between the two layers of frameworks of the double-layer frameworks 3 is 6mm, the transversely arranged double-layer frameworks 3 are fixedly connected with the wall plate outer plates 103 at two ends through screws, the side wall of the framework 301 of the framework unit 30 at one side of the transversely arranged double-layer frameworks 3 is matched with the sealing plate inner plates 201, and the sealing plate middle plate 202 is 3mm thick and is fixed on any one layer of framework between the two layers of frameworks; the double-layer frameworks 3 which are transversely arranged are connected with the wall plate outer plates 103 at two ends in an installing mode, and screws penetrate through the wall plate outer plates 103 and the end threaded holes 302, so that the double-layer frameworks are convenient to disassemble. The transversely arranged double-layer framework 3 is back to the sealing plate outer plate 203 and the wall plate outer plate 103 which are connected with the sealing plate inner plate 201 side to form a closed box body; when the active filter is disassembled, the box sealing plate 2 is firstly disassembled, and then the box wall plate 1 is disassembled. An electronic system 5 is arranged in the closed box body.
shock insulation strips 4 are arranged between the contact interface between the box wall plate 1 and between the contact interface between the box sealing plate 2 and the box wall plate 1 in a bonding mode; the contact parts of the longitudinally arranged skeleton units 30 and the wallboard inner plates 101, the wallboard middle plates 102 and the wallboard outer plates 103 are all provided with shock insulation strips 4 in a bonding mode, and the contact parts of the transversely arranged skeleton units 30 and the sealing plate inner plates 201, the sealing plate middle plates 202 and the sealing plate outer plates 203 are all provided with shock insulation strips 4 in a bonding mode. Shock insulation strip 4 will contact between case wallboard 1 and the tank wall board 1, contact between case shrouding 2 and the tank wall board 1, the contact of the skeleton unit 30 and wallboard inner panel 101, wallboard middle plate 102, wallboard planking 103 of vertically arranging, the contact of the skeleton unit 30 and shrouding inner panel 201, shrouding middle plate 202, shrouding planking 203 of transversely arranging changes into flexonics, and the whole hard joint that will be convenient for transmit vibrations breaks completely, has realized increasing syllable-dividing and shock attenuation effect. Due to the structure of the three layers of box walls, contact interfaces between the plate bodies and the framework units 30 between the active filters are increased, and the shock insulation strips 4 are introduced at the moment, so that the shock buffering effect is enhanced.
A cavity between the inner wall plate 101 and the middle wall plate 102 and a cavity between the middle wall plate 102 and the outer wall plate 103 are filled with shock-absorbing sponge (not shown); and a cavity between the sealing plate inner plate 201 and the sealing plate middle plate 202 and a cavity between the sealing plate middle plate 202 and the sealing plate outer plate 203 are filled with shock-absorbing sponge. Sound insulation and vibration damping refer to both air and mechanical vibration modes. The shock absorption sponge absorbs shock and noise, and the auxiliary shock insulation strips 4 reduce the shock sensation outside the active filter. When the whole active filter operates, the inside of the active filter is filled with noise generated by the fan and the device, and the sound insulation treatment is only carried out at the air inlet and the air outlet of the active filter, so that the sound insulation treatment is meaningless, and the single-layer box plate structure cannot play a good sound insulation effect. The box wall structure with multiple inner cavities can meet the sound insulation and shock absorption effects on the premise of meeting the strength. The design of the cavity and the shock absorbing sponge enable the amount of heat transferred to the interior through the active filter cabinet wall panel 1 and the cabinet closure panel 2 to be reduced.
Electronic system 5 is by signal conditioning board, a controller, the IGBT drive board, the IGBT converter, the reactor, filter capacitor, main contactor, fast acting fuse and circuit breaker are established ties in proper order and are constituteed, the parallel design has soft resistance that rises on the main contactor, parallel connection has dc voltage sensor and direct current bus condenser on signal conditioning board and the IGBT converter circuit section, dc voltage sensor and direct current bus condenser series connection, electric wire netting main line isolator closes a floodgate after, for the electric wire netting when preventing to power-on electric wire netting to direct current bus condenser's instantaneous impact, active power filter charges through the capacitor of soft resistance to direct current bus at first, this process can last tens seconds. When the bus voltage Udc reaches a predetermined value, the main contactor is closed. The direct current capacitor is used as an energy storage device, and compensation current is output outwards through the IGBT converter and the internal reactor to provide energy. The active power filter collects current signals in real time through an external CT and sends the current signals to the signal conditioning board, then the current signals are sent to the controller, the controller separates fundamental wave components, extracts all harmonic current and reactive current, compares the collected current components to be compensated with compensation current sent by the active power filter to obtain a difference value, outputs the difference value to the IGBT drive board as a real-time compensation signal, triggers the IGBT converter to inject the compensation current into a power grid, achieves closed-loop control, and achieves a compensation function.
As shown in fig. 7-8, the modularized active filter compensation method combines an active SVG dynamic reactive power compensation device with an impedance TSC thyristor trigger module device.
1. 10 TSC signal control I/O ports are reserved on the device interface side of the three-phase four-wire SVG of the module 3P4L and are respectively connected to an internal driving level port (the level is more than or equal to DC10V and the driving current is more than or equal to 10 mA) of the TSC silicon controlled trigger module through a flat cable of the control interface;
2.6 sets of TSC silicon controlled trigger modules are connected in parallel, and a control terminal flat cable of the SVG dynamic reactive power compensation device is connected to a switching level port of the TSC silicon controlled trigger module;
The control signals of the 3.6 TSC silicon controlled trigger module modules are respectively K1+, K1-, K2+, K2-, K3+, K3-, K4+, K4-, K5+, K5-, K6+ and K6-, wherein 6 TSC silicon controlled trigger module modules share the ground, and the SVG dynamic reactive power compensation device controller controls the switching signals of the TSC silicon controlled trigger modules.
In specific implementation, the longitudinally-arranged double-layer frameworks 3 and the wall plate inner plate 101 are connected in an adhesion mode, so that the installation is convenient. Rigid connection does not exist between the wall plate inner plate 101 and the double-layer framework 3, and the shock insulation effect between the wall plate inner plate and the double-layer framework can be enhanced. The connection mode of the longitudinally arranged double-layer frameworks 3 and the wallboard outer plate 103 is screw connection. The vibration absorption sponge is convenient to disassemble, maintain and replace by passing screws through the outer wall plate 103 and the side thread hole group 303.
In specific implementation, the middle of the frame 301 is provided with a hollow 304. The fretwork 304 guarantees to inhale the circulation of air that shakes the sponge filling intracavity, does benefit to the heat dissipation. Especially, it is more important for the surface on which the heat radiation fan is mounted.
in a specific implementation, the thicknesses of the inner wallboard panel 101, the middle wallboard panel 102 and the outer wallboard panel 103 are not the same; the thicknesses of the sealing plate inner plate 201, the sealing plate middle plate 202 and the sealing plate outer plate 203 are not consistent. When the plates made of the same material have the same thickness, vibration is easily transmitted through resonance. The board of different thickness can reduce the active filter external vibration sense that produces by the resonance effect.
In specific implementation, the thickness of the wallboard inner plate 101 is 1.5 times that of the wallboard middle plate 102 and the wallboard outer plate 103; the thickness of the sealing plate inner plate 201 is 1.5 times that of the sealing plate middle plate 202 and the sealing plate outer plate 203. Wallboard inner panel 101 and shrouding inner panel 201 thickness are big, are convenient for fixed electronic component.
an air inlet fan 6 and an air outlet fan 7 are respectively arranged on two opposite box wall plates 1 of the active filter, the air inlet fan 6 and the air outlet fan 7 are arranged on a wall plate inner plate 101, and the air inlet fan 6 and the air outlet fan 7 are aligned to a middle plate grid hole 1021 and an outer plate grid hole 1031. The shock absorption sponge in the box wall plate 1 of the air inlet fan 6 and the air outlet fan 7 is installed, the shock absorption and air filtration effects are achieved, and after the active filter operates for a period of time, the outer plate 103 of the wall plate is detached to replace the shock absorption sponge. After having increased and having inhaled and inhale shake sponge filtration, must increase the air intake resistance that advances fan 6, the suction effect that goes out fan 7 this moment can produce the negative pressure, and the supplementary air admission that advances fan 6 strengthens active filter's radiating effect. And the air inlet fan 6 and the air outlet fan 7 are arranged on the wallboard inner plate 101, so that the absorption of the shock absorption sponge 8 to the vibration of the fans is increased.
in specific implementation, the shock insulation strip 4 is a polyurethane shock insulation strip.
In a specific implementation, the shock-absorbing sponge is melamine cotton.
The embodiment is only a single implementation manner of the present invention, and those skilled in the art can obtain other embodiments according to the drawings without any creative effort, and the embodiments are also within the protection scope of the present invention.
Claims (7)
1. the utility model provides a three-layer tank wall reactive compensation active filter which characterized in that: comprises a box wall plate (1), a box sealing plate (2), a double-layer framework (3) and a shock insulation strip (4);
Two ends of a frame body (301) of a frame unit (30) in the double-layer frame (3) are provided with end threaded holes (302), two side walls of the frame body (301) are provided with side threaded hole groups (303),
the box wall plate (1) comprises a wall plate inner plate (101), a wall plate middle plate (102) and a wall plate outer plate (103), and the box sealing plate (2) comprises a sealing plate inner plate (201), a sealing plate middle plate (202) and a sealing plate outer plate (203);
a double-layer framework (3) array is longitudinally arranged and fixed between the sealing plate inner plates (201) of the two box sealing plates (2), a clearance layer of 6-8mm is arranged between the two layers of frameworks of the double-layer framework (3), and the wall plate middle plate (102) is 2-5mm thick and is fixed on any side layer framework between the two layers of frameworks; the wall plate inner plates (101) and the wall plate outer plates (103) of the wall box plate (1) are fixed at two sides of the longitudinally-arranged double-layer framework (3) array, and the interlayer distance between the wall plate inner plates (101) and the wall plate outer plates (103) is 3-5 cm; both ends of the wall plate outer plate (103) exceed the sealing plate inner plates (201) at the upper and lower positions by 3-5 cm;
The double-layer frameworks (3) are transversely arranged on the outer side of a sealing plate inner plate (201) of the box sealing plate (2), the arrangement interval between the two layers of frameworks of the double-layer frameworks (3) is 6-8mm, the transversely arranged double-layer frameworks (3) are fixedly connected with wall plate outer plates (103) at two ends, the side wall of a framework (301) of a framework unit (30) at one side of the transversely arranged double-layer framework (3) is matched with the sealing plate inner plate (201), and the sealing plate middle plate (202) is 3-5mm thick and is fixed on any one layer of framework between the two layers of frameworks; the transversely arranged double-layer frameworks (3) are back to the plate outer plate (203) connected with the plate inner plate (201) side to form a closed box body with the plate outer plate (103); an electronic system (5) is arranged in the closed box body;
Shock insulation strips (4) are arranged between contact interfaces between the box wall plate (1) and between the box sealing plate (2) and the box wall plate (1); shock insulation strips (4) are arranged at the contact parts of the framework units (30) which are longitudinally arranged, the wall plate inner plate (101), the wall plate middle plate (102) and the wall plate outer plate (103), shock insulation strips (4) are arranged at the contact parts of the framework units (30) which are transversely arranged, the sealing plate inner plate (201), the sealing plate middle plate (202) and the sealing plate outer plate (203),
A cavity between the wallboard inner plate (101) and the wallboard middle plate (102) and a cavity between the wallboard middle plate (102) and the wallboard outer plate (103) are filled with shock-absorbing sponge; and a cavity between the sealing plate inner plate (201) and the sealing plate middle plate (202) and a cavity between the sealing plate middle plate (202) and the sealing plate outer plate (203) are filled with shock-absorbing sponge.
2. the three-layer box wall reactive compensation active filter according to claim 1, characterized in that the longitudinally arranged double-layer frameworks (3) are connected with the inner wall plate (101) in an adhesive manner, and the longitudinally arranged double-layer frameworks (3) are connected with the outer wall plate (103) in a screw manner.
3. The three-layer box wall reactive compensation active filter according to claim 1, characterized in that the middle of the frame body (301) is provided with a hollow (304).
4. The three-layer box wall reactive compensation active filter according to claim 1, characterized in that the thicknesses of the inner panel (101), the middle panel (102) and the outer panel (103) are not uniform; the thicknesses of the sealing plate inner plate (201), the sealing plate middle plate (202) and the sealing plate outer plate (203) are different.
5. The three-tier wall reactive compensation active filter of claim 4, wherein the wall inner panel (101) is thicker than both the wall middle panel (102) and the wall outer panel (103); the thickness of the sealing plate inner plate (201) is larger than that of the sealing plate middle plate (202) and that of the sealing plate outer plate (203).
6. The three-layer box wall reactive compensation active filter according to any one of claims 1 to 5, characterized in that the seismic isolation strips (4) are polyurethane seismic isolation strips.
7. The three-layer box wall reactive compensation active filter of any one of claims 1 to 5, wherein the shock-absorbing sponge is melamine cotton.
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| CN201911006365.4A CN110556725A (en) | 2019-10-22 | 2019-10-22 | Three-layer box wall reactive compensation active filter |
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| CN201911006365.4A CN110556725A (en) | 2019-10-22 | 2019-10-22 | Three-layer box wall reactive compensation active filter |
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