CN111244798A - Active power filter device based on voltage closed-loop control - Google Patents
Active power filter device based on voltage closed-loop control Download PDFInfo
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- CN111244798A CN111244798A CN202010161915.6A CN202010161915A CN111244798A CN 111244798 A CN111244798 A CN 111244798A CN 202010161915 A CN202010161915 A CN 202010161915A CN 111244798 A CN111244798 A CN 111244798A
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- active power
- filter
- loop control
- device based
- heat conduction
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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
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- 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
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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
- Y02E40/20—Active power filtering [APF]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to an active power filter device based on voltage closed-loop control, which comprises a filter shell, a front-end double-opening door leaf and a rear-end door leaf, wherein the front-end double-opening door leaf and the rear-end door leaf are respectively positioned at the front end and the rear end of the filter shell and movably connected with the front end and the rear end of the filter shell; the bottom of the filter shell is hollowed and connected with a bottom bin, a heat exchange fan is arranged in the bottom bin, and the lower end of the heat conduction cover is opened and communicated into the bottom bin. The device not only can ensure that the device has excellent heat dissipation efficiency, but also can be suitable for various ground installation conditions.
Description
Technical Field
The invention relates to the technical field of electronic components, in particular to an active power filter device based on voltage closed-loop control.
Background
The active power filter is a novel power electronic device for dynamically inhibiting harmonic waves and compensating reactive power, can quickly track and compensate harmonic waves with different sizes and frequencies, is called as an active power filter, and is only capable of passively absorbing harmonic waves with fixed frequency and fixed frequency compared with a passive LC filter.
Then, in the active filter in the prior art, because the number of internal electronic elements is large and the space in the shell is utilized more fully, the internal structure is dense, and the heat dissipation effect is poor due to the adoption of a common heat dissipation method. The active power filters in the prior art all have the problem of poor heat dissipation, so that faults often occur due to overheating.
Chinese patent with publication number CN106410800B discloses an active power filter, which includes a filter housing, a front-end double-open door leaf and a rear-end door leaf, wherein the front-end double-open door leaf and the rear-end door leaf are respectively located at the front end and the rear end of the filter housing and movably connected with the same, the bottom of the filter housing is a hollowed bottom, the bottom of the filter housing is fixedly connected with a buried radiator and a fan radiator, and the filter housing is located at the lower end of the bottom of the filter housing; the buried radiator comprises an internal circulating pipe, a buried vertical pipe, a buried exchange circulation medium pipe and a buried heat exchange pipe, the internal circulating pipe is fixedly connected with the buried vertical pipe, the buried vertical pipe and the buried heat exchange pipe are connected through the buried exchange circulation medium pipe, the internal circulating pipe is the internal circulating pipe of the annular coil pipe, and the buried exchange circulation medium pipe is the buried exchange circulation medium pipe of the annular coil pipe.
The technical scheme has the following technical defects: the regulator cubicle, especially active power filter device installs stereoplasm planes such as concrete ground usually, and the construction buries formula radiator degree of difficulty great under this kind of ground condition, and in addition, the position of installation active power filter device changes, and it is very difficult again to bury formula radiator and be connected with the cabinet body of active power filter device, causes and buries formula radiator unable the use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an active power filter device based on voltage closed-loop control, which can ensure that the device has excellent heat dissipation efficiency and is suitable for various ground installation conditions.
The above object of the present invention is achieved by the following technical solutions:
an active power filter device based on voltage closed-loop control comprises a filter shell, a front-end double-opening door leaf and a rear-end door leaf, wherein the front-end double-opening door leaf and the rear-end door leaf are respectively positioned at the front end and the rear end of the filter shell and movably connected with the front end and the rear end of the filter shell; the bottom of the filter shell is hollowed and connected with a bottom bin, a heat exchange fan is arranged in the bottom bin, and the lower end of the heat conduction cover is opened and communicated into the bottom bin.
By adopting the technical scheme, when the working temperature in the active power filter device is overhigh, the heat exchange fan starts to rotate; when the temperature of the upper part in the device is overhigh, the heat exchange fan rotates forwards to blow air into the device from the lower part, hot air on the upper part in the device flows out of the radiating holes under the driving of air flow along with the flowing of the air, the hot air passes through the refrigerating module in the heat conducting cover, the heat is absorbed by the refrigerating module, the temperature of the hot air is reduced, the hot air continues to flow downwards, and the hot air is sent into the device by the heat exchange fan through the bottom bin; when the temperature of the lower part in the device is overhigh, the heat exchange fan rotates reversely and blows air downwards, hot air at the lower part in the device is driven by airflow to be discharged outwards from the bottom bin and flows upwards along the heat conduction cover along with the flowing of the air, the hot air passes through the refrigeration module in the heat conduction cover and is absorbed by the refrigeration module, so that the temperature of the hot air is reduced, the hot air continues to flow upwards and is sent into the device through the heat dissipation hole; two air circulation systems, the heat in the device can be taken out to realize the radiating purpose of cooling in the device.
The present invention in a preferred example may be further configured to: the heat conduction cover includes the picture peg of out-wainscot, both sides and the baffle at top, the lateral surface of picture peg is provided with the inserted block, the cardboard sets up to L shape, and forms the slot of transversal personally submitting U-shaped between the lateral wall of filter housing, the lateral wall of inserted block laminating filter housing is pegged graft in the slot.
By adopting the technical scheme, the arrangement of the heat conducting cover can prevent the circulating airflow from flowing outwards, so that the air circulating system is sealed, external dust is prevented from entering the device through the air circulating system, and the influence of dust collection in the device on heat dissipation is avoided; the insertion block is arranged on the insertion plate and is matched and connected with the slot of the clamping plate, so that the heat conducting cover can be conveniently detached, and the use is more flexible.
The present invention in a preferred example may be further configured to: the bottom surface both ends of end storehouse extend to both sides and form the ascending U-shaped extension board of opening, outer wallboard and picture peg insert in the U-shaped extension board.
By adopting the technical scheme, the U-shaped extension plate is matched with the outer wall plate and the lower end of the inserting plate, so that the airtightness of the lower end of the device is ensured, and the downward leakage of heat is reduced.
The present invention in a preferred example may be further configured to: at least one layer of refrigeration module is arranged on the inner wall of the outer wall plate, and the refrigeration module comprises a metal mesh layer arranged on the outer layer and a refrigerant filling layer arranged on the inner layer.
Through adopting above-mentioned technical scheme, a plurality of refrigeration modules can strengthen the refrigeration cooling effect of heat conduction cover, and the refrigeration module adopts network structure, and the circulation of the air of being convenient for improves the absorption efficiency to the heat.
The present invention in a preferred example may be further configured to: the baffle sets up to connect the rubber backing plate at the wainscot top, the both ends and the picture peg top butt of baffle, the front side laminating of baffle is on the lateral wall of filter casing.
Through adopting above-mentioned technical scheme, the baffle adopts the rubber backing plate, can improve the seal at heat conduction cover top.
The present invention in a preferred example may be further configured to: the louvre sets up the multiunit from top to bottom at the lateral wall of wave filter casing, the heat conduction cover sets up at least one from bottom to top, through the terminal surface butt of outer wallboard between the adjacent heat conduction cover, the medial surface lower extreme of outer wallboard is provided with the vaulting pole that struts the baffle downwards.
Through adopting above-mentioned technical scheme, can be according to the position that generates heat, select to insert the heat conduction cover of different quantity, height, can enough reduce the space that the heat conduction cover occupy, can heat the outflow efficiency of hot-air again, the vaulting pole that the heat conduction covered in top can strut the baffle that the heat conduction covered in the below, and the intercommunication of heat conduction cover inner space is guaranteed from top to bottom, guarantees air cycle's smooth and easy.
The present invention in a preferred example may be further configured to: the radiating holes are symmetrically arranged on two side walls of the filter shell, and the side walls of the filter shell above the radiating holes protrude outwards to form blocking eaves.
By adopting the technical scheme, the radiating holes are symmetrically arranged, so that the heat conduction covers on different sides can be selected to be connected according to the installation environment of the device, and the heat conduction covers can be installed more flexibly; the baffle eaves can play the guide effect to the air current, the entering of the cold air of being convenient for and the outflow of hot-air.
The present invention in a preferred example may be further configured to: the side walls of the two ends of the bottom bin are provided with ventilation openings, and dust screens are arranged at the ventilation openings.
Through adopting above-mentioned technical scheme, the ventilation opening can guarantee the circulation of air in the circulation system, and the dust screen can block dust again and enter into the device.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the active power filter device adopts an internal air circulation system, hot air in the device is led out through the heat exchange fan, then the hot air is cooled by the aid of the refrigerating module and then conveyed back into the device, and cooling and heat dissipation in the device are realized; meanwhile, the air circulation system is isolated from the outside air, so that heat generated in the device is prevented from being discharged to the outside, and the function of keeping the outside room temperature can be achieved.
2. The heat dissipation structure can move along with the movement of the active power filter device, the requirement on the installation environment is low, the installation direction and the installation height can be adjusted according to the use requirement, and the heat conducting cover is more flexible and convenient to install and disassemble.
3. The air circulation system that the wave filter casing formed with the heat conduction cover can two positive and negative directions operation, can select different gas flow direction to the position that generates heat of device internal difference to the realization will generate heat the heat quick discharge cooling of position, guarantee active power filter device's normal work.
4. Keep apart air cycle system and external through the heat conduction cover, can enough completely cut off the heat, can completely cut off sound again, reduced the noise that heat transfer fan produced.
Drawings
Fig. 1 is a schematic front view of the device of the present invention when open.
Fig. 2 is a schematic view of the back side of the device of the present invention when open.
Fig. 3 is a schematic longitudinal structure of the heat conductive cover according to the present invention when mounted.
Fig. 4 is a schematic view of a lateral structure of the heat conductive cover of the present invention when mounted.
Fig. 5 is a schematic view of the installation structure of the refrigeration module of the present invention.
In the figure, 1, a filter shell, 11, heat dissipation holes, 12, a clamping plate, 13, a bottom bin, 14, a U-shaped extension plate, 15, a blocking eave, 16, a dust screen, 2, a front-end double-opening door leaf, 3, a rear-end door leaf, 4, a heat conduction cover, 41, a refrigeration module, 411, a metal mesh layer, 412, a refrigerant filling layer, 42, an outer wall plate, 43, an inserting plate, 44, a baffle, 45, an inserting block, 46, a supporting rod, 5 and a heat exchange fan.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the active power filter device based on voltage closed-loop control disclosed by the invention works by adopting a voltage closed-loop control system, and the device comprises a filter shell 1, a front-end double-opening door leaf 2 and a rear-end door leaf 3, wherein the front-end double-opening door leaf 1 is arranged at the front end of the filter shell 1 and is hinged to the front-end double-opening door leaf, and the rear-end door leaf 3 is arranged at the rear end of the filter shell 1 and is movably connected to the rear-end double-opening door leaf. The louvre 11 has been seted up on filter housing 1's the lateral wall, louvre 11 symmetry sets up on two lateral walls of filter housing 1, the louvre 11 of each side sets up the multiunit at filter housing 1's lateral wall from the top down, set up two sets ofly in this embodiment, respectively at the upper portion and the lower part of filter housing 1 lateral wall, louvre 11 arranges the bar hole that arranges into lateral extension, and the outside protrusion of filter housing 1 lateral wall of louvre 11 top forms and keeps off eaves 15, can prevent rivers to the device in, can guide the flow direction of air again.
Referring to fig. 2 and 3, the outer side surface of the side wall of the filter housing 1 is provided with two clamping plates 12 extending up and down at positions close to the two side edges, the two clamping plates 12 are arranged in parallel, and the heat conducting cover 4 is slidably clamped on the clamping plates 12. The heat conducting cover 4 is opened towards the direction of the filter shell 1, covers the outer side of the heat radiating hole 11 and is internally provided with a refrigeration module 41; the bottom of the filter shell 1 is hollowed and connected with a bottom bin 13, the bottom bin 13 is provided with a heat exchange fan 5, and the lower end of the heat conduction cover 4 is also provided with an opening and is communicated into the bottom bin 13; the filter housing 1, the heat conducting cover 4 and the bottom bin 13 are communicated with each other to form an annular air circulation system, so that hot air flows, and heat dissipation and cooling are performed through the refrigeration module 41.
Referring to fig. 3 and 4, the heat conducting cover 4 includes an outer wall plate 42, insertion plates 43 on two sides and a top baffle 44, the outer wall plate 42 and the insertion plates 43 on two sides form an integrally formed U-shaped plate, insertion blocks 45 are arranged on the outer side surfaces of the insertion plates 43 at intervals, in this embodiment, the insertion plates 12 are L-shaped and welded on the side walls of the filter housing 1, and form slots with U-shaped cross sections between the insertion plates and the side walls of the filter housing 1, the slots formed by the two insertion plates 12 are arranged oppositely, the insertion blocks on the insertion plates 43 on two sides are attached to the side walls of the filter housing 1 and inserted into the slots, and the heat conducting cover 4 moves up and.
The two ends of the bottom surface of the bottom bin 13 extend towards the two sides to form a U-shaped extension plate 14 with an upward opening, the lower ends of the outer wall plate 42 and the insertion plate 43 are inserted into the U-shaped extension plate 14 and abut against the bottom surface of the U-shaped extension plate 14, and the two insertion plates 43 are attached to the two vertical plates of the U-shaped extension plate 14, so that the U-shaped extension plate 14 is matched with the lower ends of the outer wall plate 42 and the insertion plates 43, the tightness of the lower end of the device is ensured, and the downward leakage of heat is reduced. Meanwhile, the side walls of the two ends of the bottom bin 13 are provided with ventilation openings to ensure the circulation of air in the circulating system, and the ventilation openings are provided with dust screens 16 to prevent dust from entering the active power filter device.
Referring to fig. 3, the baffle 44 is a rubber pad attached to the top of the outer wall plate 42, the thickness of the baffle 44 is 3 mm, the two ends of the baffle 44 abut against the top of the insert plate 43, the front side of the baffle 44 is attached to the side wall of the filter housing 1, and the rear side of the baffle is attached to the top of the outer wall plate 42 by screws. The heat conduction cover 4 sets up at least one from bottom to top, sets up two in this embodiment, corresponds the louvre 11 installation of filter casing 1 upper portion and lower part respectively, and through the terminal surface butt of wainscot 42 between two heat conduction covers 4, the medial surface lower extreme of the wainscot 42 of top heat conduction cover 4 is provided with vaulting pole 46, struts the baffle 44 of below heat conduction cover 4 downwards, puts through the passageway between two heat conduction covers 4. Can be according to the position that generates heat, select to insert heat conduction cover 4 of different quantity and height, can enough reduce the space that heat conduction cover 4 occupy, can accelerate the outflow efficiency of hot-air again.
Referring to fig. 5, at least one layer of refrigeration module 41 is disposed on the inner wall of the outer wall plate 42, in this embodiment, three layers are disposed, the refrigeration module 41 includes a metal mesh layer 411 disposed on the outer layer and a refrigerant filling layer 412 disposed on the inner layer, an interlayer is disposed between the two metal mesh layers 411, the refrigerant filling layer 412 is filled in the interlayer, and the refrigeration module 41 adopts a mesh structure, which facilitates air circulation and also improves heat absorption area and efficiency.
In this embodiment, when the active power filter device is arranged, the inside of the active power filter device is further provided with a heat dissipation control system, the heat dissipation control system comprises a controller, a temperature measuring device and an alarm device, the heat exchange fan 5, the temperature measuring device and the alarm device are all connected with the controller, the two temperature measuring devices are correspondingly arranged on the upper portion and the lower portion of the active power filter device, the temperatures of the upper portion and the lower portion of the active power filter device are measured, and the two modules are correspondingly arranged in the controller to control the heat exchange fan 5 to rotate forwards or reversely.
The implementation principle of the embodiment is as follows: when the temperature of the upper part in the device is overhigh, the temperature measuring device at the upper part gives a signal to the controller to control the heat exchange fan 5 to rotate forwards, the heat exchange fan 5 blows air into the device from the lower part, the hot air at the upper part in the device is driven by the air flow to flow out of the heat dissipation holes under the drive of the air flow, the hot air passes through the refrigeration module 41 in the heat conduction cover 4, the refrigeration module 41 absorbs the heat, the temperature of the hot air is reduced, the hot air continues to flow downwards, and the hot air is sent into the device by the heat exchange fan 5 through the bottom bin 13; when the temperature of the lower part in the device is too high, the temperature measuring device at the lower part gives a signal to the controller to control the heat exchange fan 5 to rotate reversely, the heat exchange fan 5 blows air downwards, the hot air at the lower part in the device is driven by the airflow to be discharged outwards from the bottom bin 13 and flows upwards along the heat conduction cover 4, the hot air absorbs heat through the refrigeration module 41 in the heat conduction cover 4 by the refrigeration module 41, so that the temperature of the hot air is reduced, the hot air continues to flow upwards and is sent into the device through the heat dissipation hole 11; two air circulation systems, the heat in the device can be taken out to realize the radiating purpose of cooling in the device.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an active power filter device based on voltage closed-loop control, includes that filter housing (1), front end are two to open door leaf (2) and rear end door leaf (3) are located the front end and the rear end of filter housing (1) respectively and rather than swing joint, its characterized in that: the filter comprises a filter shell (1), wherein heat dissipation holes (11) are formed in the side wall of the filter shell (1), clamping plates (12) extending up and down are respectively arranged at positions, close to two side edges, on the outer side of the side wall of the filter shell (1), heat conduction covers (4) are connected onto the clamping plates (12) in a sliding and clamping mode, refrigeration modules (41) are arranged in the heat conduction covers (4), and the heat conduction covers (4) cover the outer sides of the heat dissipation holes (11); the filter shell is characterized in that the bottom of the filter shell (1) is hollowed and connected with a bottom bin (13), a heat exchange fan (5) is arranged in the bottom bin (13), and the lower end of the heat conduction cover (4) is opened and communicated into the bottom bin (13).
2. The active power filter device based on voltage closed-loop control according to claim 1, wherein: heat conduction cover (4) include picture peg (43) and baffle (44) at top of out-wainscot (42), both sides, the lateral surface of picture peg (43) is provided with inserted block (45), cardboard (12) set up to the L shape, and form the slot of transversal personally submitting U-shaped between the lateral wall of filter housing (1), the lateral wall of inserted block (45) laminating filter housing (1) is pegged graft in the slot.
3. The active power filter device based on voltage closed-loop control according to claim 2, wherein: the two ends of the bottom surface of the bottom bin (13) extend towards two sides to form a U-shaped extension plate (14) with an upward opening, and the outer wall plate (42) and the inserting plate (43) are inserted into the U-shaped extension plate (14).
4. The active power filter device based on voltage closed-loop control according to claim 2, wherein: at least one layer of refrigeration module (41) is arranged on the inner wall of the outer wall plate (42), and the refrigeration module (41) comprises a metal mesh layer (411) arranged on the outer layer and a refrigerant filling layer (412) arranged on the inner layer.
5. The active power filter device based on voltage closed-loop control according to claim 2, wherein: baffle (44) set up to connect the rubber backing plate at wainscot (42) top, the both ends and picture peg (43) top butt of baffle (44), the front side laminating of baffle (44) is on the lateral wall of filter casing (1).
6. The active power filter device based on voltage closed-loop control according to claim 5, wherein: the side wall of louvre (11) at wave filter casing (1) sets up the multiunit from the top down, heat conduction cover (4) set up at least one from bottom to top, the terminal surface butt through exterior wall board (42) between adjacent heat conduction cover (4), the medial surface lower extreme of exterior wall board (42) is provided with vaulting pole (46) of strutting baffle (44) downwards.
7. The active power filter device based on voltage closed-loop control according to claim 1, wherein: the radiating holes (11) are symmetrically arranged on two side walls of the filter shell (1), and the side walls of the filter shell (1) above the radiating holes (11) protrude outwards to form blocking eaves (15).
8. The active power filter device based on voltage closed-loop control according to claim 1, wherein: the side walls of the two ends of the bottom bin (13) are provided with ventilation openings, and dust screens (16) are arranged at the ventilation openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161915.6A CN111244798B (en) | 2020-03-10 | 2020-03-10 | Active power filter device based on voltage closed-loop control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161915.6A CN111244798B (en) | 2020-03-10 | 2020-03-10 | Active power filter device based on voltage closed-loop control |
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| Publication Number | Publication Date |
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| CN111244798A true CN111244798A (en) | 2020-06-05 |
| CN111244798B CN111244798B (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834932A (en) * | 2020-07-21 | 2020-10-27 | 许昌学院 | Intelligent distribution network safety arrangement |
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| CN102428005A (en) * | 2009-03-20 | 2012-04-25 | Axa能源有限责任公司 | A Preconditioned Air Unit With Variable Frequency Driving |
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| CN204030363U (en) * | 2014-08-12 | 2014-12-17 | 国网山东诸城市供电公司 | A kind of outdoor power equipment cabinet |
| CN106786069A (en) * | 2017-03-29 | 2017-05-31 | 贵州大学 | A kind of electrical engineering high efficiency circulating heat-dissipation electrical cabinet |
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2020
- 2020-03-10 CN CN202010161915.6A patent/CN111244798B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2124518B1 (en) * | 2008-05-23 | 2013-03-20 | Huawei Technologies Co., Ltd. | Cabinet temperature control system |
| CN102428005A (en) * | 2009-03-20 | 2012-04-25 | Axa能源有限责任公司 | A Preconditioned Air Unit With Variable Frequency Driving |
| CN204030363U (en) * | 2014-08-12 | 2014-12-17 | 国网山东诸城市供电公司 | A kind of outdoor power equipment cabinet |
| CN106786069A (en) * | 2017-03-29 | 2017-05-31 | 贵州大学 | A kind of electrical engineering high efficiency circulating heat-dissipation electrical cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111834932A (en) * | 2020-07-21 | 2020-10-27 | 许昌学院 | Intelligent distribution network safety arrangement |
| CN111834932B (en) * | 2020-07-21 | 2022-07-08 | 许昌学院 | Intelligent distribution network safety arrangement |
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| CN111244798B (en) | 2021-04-13 |
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