CN205178298U - Cabinet type equipment of serial module type - Google Patents
Cabinet type equipment of serial module type Download PDFInfo
- Publication number
- CN205178298U CN205178298U CN201520969687.XU CN201520969687U CN205178298U CN 205178298 U CN205178298 U CN 205178298U CN 201520969687 U CN201520969687 U CN 201520969687U CN 205178298 U CN205178298 U CN 205178298U
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Abstract
The utility model provides a cabinet type equipment of serial module type for among the three -phase high voltage electric network, it includes the several cells cabinet, and high voltage isolation is carried out on each unit cabinet and ground, be provided with a plurality of modules of series connection in the unit cabinet, and each unit cabinet carries out the electricity rather than arbitrary module of inside or the connecting wire between the adjacent module and connects. The utility model discloses a carry out high voltage isolation with unit cabinet and ground, it is connected simultaneously to carry out the electricity with inside arbitrary module of unit cabinet or the connecting wire between the adjacent module, make module or the current potential of the tie point on the connecting wire in unit cabinet and the unit cabinet equal, and then make the unit cabinet and the electrical potential difference of the interior module of unit cabinet reduce greatly, ann's rule in order to reduce unit cabinet and intermodule leaves, thereby realize reducing the volume of unit cabinet, can reduce simultaneously this cabinet type equipment of serial module type's volume, its structure cost is reduced, package cost and cost of transportation, and the installation space that can reduce the customer requires the restriction.
Description
Technical field
The utility model relates to electric and electronic technical field, particularly relates to a kind of block coupled in series type cabinet-type equipment.
Background technology
Due to the relation that electrical device voltage withstand class is not high, occur that individual module can not meet the situation of hyperbaric environment application requirement, therefore market there is the product of block coupled in series type topology, as block coupled in series type high voltage converter, block coupled in series type (also known as chain type) high pressure SVG (static reactive generator) etc.Existing serial module structure is arranged in different units cabinet, and is connected with three-phase high-voltage electrical network by reactor or transformer, simultaneously unit cabinet cabinet ground connection, and its top is provided with cooling fan.Need electric pressure according to line voltage to do the design of safety distance in unit cabinet between all modules and cabinet, due to unit cabinet cabinet ground connection, reinforced insulation is required between module and cabinet, the insulation of its safety relies on the frame material in cabinet to realize, and need to carry out the design of safety distance with the electric pressure of system voltage, cause both safety required distances will be very large, to the intensity of insulated support and insulating requirements very high, the cabinet size designed is also very large, product cost is caused to increase, volume increases, and be very restricted when transporting.
Utility model content
The purpose of this utility model is to provide a kind of block coupled in series type cabinet-type equipment, by reducing the electrical potential difference between module and cabinet, reduces the safety distance between module and cabinet, thus reduces the volume of cabinet, reduce infrastructure cost and cost of transportation.
For solving the problems of the technologies described above, utility model adopts technical scheme as described below.A kind of block coupled in series type cabinet-type equipment, for in three-phase high-voltage electrical network, it comprises some unit cabinets, some modules of series connection are provided with in described each unit cabinet, high_voltage isolation is carried out on described unit cabinet and ground, and the connecting line between arbitrary module of each unit cabinet inside or adjacent block is electrically connected with described unit cabinet cabinet.
Preferably, be installed on ground by High-Voltage Insulation support column bottom described unit cabinet.
Preferably, described unit cabinet top is provided with cooling fan, is isolated between described unit cabinet and described cooling fan by high-pressure insulator.
Preferably, described high-pressure insulator and described High-Voltage Insulation support column adopt SMC composite material to make
Preferably, described some unit cabinets adopt star or the leg-of-mutton mode of connection.
Preferably, described unit cabinet adopts star-star connection mode, described some unit cabinets are divided into three groups, unit cabinet of each group is connected forming unit group mutually, the first end of described three unit groups is electrically connected with three-phase high-voltage electrical network as the input of unit cabinet, and the second end of described three unit groups is connected.
Preferably, described unit cabinet adopts delta connection mode, described some unit cabinets are divided into three groups, unit cabinet of each group is connected forming unit group mutually, the first end of described three unit groups is electrically connected with three-phase high-voltage electrical network as the input of unit cabinet, the first end of described three unit groups and the electrical connection of the second end head and the tail.
Preferably, the concatenation module of equal number is provided with in described unit cabinet.
Preferably, the first end of described unit group is by being connected with three-phase high-voltage electrical network after reactance or transformer.
Advantageous Effects of the present utility model is: this block coupled in series type cabinet-type equipment is used in three-phase high-voltage electrical network, it comprises some unit cabinets, high_voltage isolation is carried out on each unit cabinet and ground, be provided with some modules of series connection in unit cabinet, and the connecting line between arbitrary module of each unit cabinet and its inside or adjacent block is electrically connected.The utility model is by carrying out high_voltage isolation by unit cabinet and ground, be electrically connected with the connecting line between arbitrary module of unit cabinet inside or adjacent block simultaneously, make unit cabinet equal with the electromotive force of the module in unit cabinet or the tie point on connecting line, and then the electrical potential difference of unit cabinet and unit cabinet inner module is reduced greatly, to reduce the safety distance required by unit cabinet and intermodule, thus realize the volume reducing unit cabinet, the volume of this block coupled in series type cabinet-type equipment can be reduced simultaneously, reduce its infrastructure cost, packing cost and cost of transportation, and can reduce the requirements of installation space of client is limited.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment one provides.
Fig. 2 is the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment two provides.
Fig. 3 is the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment three provides.
Embodiment
For making those of ordinary skill in the art clearly understand the object of utility model, technical scheme and advantage, below in conjunction with drawings and Examples, utility model is further elaborated.
In the present embodiment, this block coupled in series type cabinet-type equipment is used in three-phase high-voltage electrical network, it comprises some unit cabinets, some modules of series connection are provided with in each unit cabinet, high_voltage isolation is carried out on unit cabinet and ground, and the connecting line between arbitrary module of each unit cabinet inside or adjacent block is electrically connected with unit cabinet cabinet.By the connecting line between arbitrary module of unit cabinet inside or adjacent block is electrically connected with unit cabinet cabinet, make unit cabinet equal with the electromotive force of the module in unit cabinet or the tie point on connecting line, and then the electrical potential difference of unit cabinet and unit cabinet inner module is reduced greatly, to reduce the safety distance required by unit cabinet and intermodule, thus realize the volume reducing unit cabinet, the volume of this block coupled in series type cabinet-type equipment can be reduced simultaneously, reduce its infrastructure cost, packing cost and cost of transportation, and can reduce the requirements of installation space of client is limited.
Preferably, in the present embodiment, be installed on ground by High-Voltage Insulation support column bottom unit cabinet, to realize, by High-Voltage Insulation support column, unit cabinet and ground are carried out high_voltage isolation.Because the connecting line between the module of unit cabinet and its inside or adjacent block is electrically connected, and unit cabinet is equal with the electromotive force of connecting line between module or adjacent block, therefore unit cabinet has very large voltage difference relative to ground, for ensureing the safety of transmission line, need to carry out high_voltage isolation by High-Voltage Insulation support column.Simultaneously for improving the security protection performance of this block coupled in series type cabinet-type equipment, the periphery of unit cabinet needs to arrange isolated column in actual applications, and for unit cabinet being carried out band electric isolution, the personnel that prevent touch by mistake.
Preferably, unit cabinet top is provided with cooling fan, and due to cooling fan employing is light current, need to isolate with unit cabinet cabinet, isolated by high-pressure insulator between unit cabinet and cooling fan, to solve the heat dissipation problem of unit cabinet inside, make it meet temperature increase requirement.
Preferably, in the present embodiment, high-pressure insulator and High-Voltage Insulation support column all adopt SMC composite material to make.SMC composite material has absolute water-tight performance, Corrosion Protection, anti-electricity-theft performance etc.; it is specious; have the safeguard protection of lock and lead sealing, long service life, compound cable support, cable ditch support, compound ammeter box etc. are widely used in using in rural power grids, urban network restructuring.Because cooling fan uses low-voltage power supply, and the cabinet of unit cabinet is with the electromotive force identical with the tie point on connecting line between its internal module or adjacent block, for high-tension electricity and low tension being isolated, adopt the high-pressure insulator be made up of SMC composite material that the cooling fan at respective with it for unit cabinet top is carried out Secure isolation.Simultaneously, because the connecting line between the module of unit cabinet and its inside or adjacent block is electrically connected, and unit cabinet is equal with the electromotive force of connecting line between module or adjacent block, therefore unit cabinet has very large voltage difference relative to ground, adopt the High-Voltage Insulation support column be made up of SMC composite material that unit cabinet and ground are carried out high_voltage isolation, to ensure transmission of electricity safety, the increase security protection performance of circuit.
Preferably, some unit cabinets adopt star or the leg-of-mutton mode of connection.
Preferably, unit cabinet adopts star-star connection mode, and some unit cabinets are divided into three groups, and unit cabinet of each group is connected forming unit group mutually, the first end of three unit groups is electrically connected with three-phase high-voltage electrical network as input, and the second end of three unit groups is connected.
By some unit cabinets of this block coupled in series type cabinet-type equipment being divided into three groups and correspondence is connected in three-phase high-voltage electrical network, because the unit cabinet in each group is connected, and the module in each unit cabinet is in series, therefore using the terminals of first unit cabinet often organized in unit cabinet as first end, using the terminals of last unit cabinet in this group unit cabinet as the second end, and the input of first end as this group unit cabinet is connected with three-phase high-voltage electrical network, the second end is connected to form star-star connection mode simultaneously.
Preferably, unit cabinet adopts delta connection mode, some unit cabinets are divided into three groups, unit cabinet of each group is connected forming unit group mutually, the first end of three unit groups is electrically connected with three-phase high-voltage electrical network as the input of unit cabinet, the first end of three unit groups and the electrical connection of the second end head and the tail.
By some unit cabinets of this block coupled in series type cabinet-type equipment being divided into three groups and correspondence is connected in three-phase high-voltage electrical network, because the unit cabinet in each group is connected, and the module in each unit cabinet is in series, therefore using the terminals of first unit cabinet often organized in unit cabinet as first end, using the terminals of last unit cabinet in this group unit cabinet as the second end, and the input of first end as this group unit cabinet is connected with three-phase high-voltage electrical network, the first end of three unit groups and the second end head and the tail are electrically connected to form delta connection mode simultaneously.
Preferably, the concatenation module of equal number is provided with in unit cabinet.By unit cabinet being arranged the concatenation module of equal number, realizing the standardized production of unit cabinet on the one hand, to enhance productivity, realizing electric voltage equalization in three-phase high-voltage electrical network on the other hand.
Preferably, the first end of unit group is by being connected with three-phase high-voltage electrical network after reactance or transformer.
By reactor or transformer are arranged between three-phase high-voltage electrical network and unit group, namely the first end often organizing unit group is all connected with three-phase high-voltage electrical network by reactor or transformer, effectively can not only suppress the high order harmonic component in three-phase high-voltage electrical network, restriction inrush current and switching overvoltage, and the voltage waveform of system can be improved, improve power factor of electric network.
With reference to shown in Fig. 1, the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment one provides.This block coupled in series type cabinet-type equipment 1 comprises 3 and carries out the unit cabinet of high_voltage isolation, i.e. unit cabinet 11, unit cabinet 12 and unit cabinet 13 with ground.9 modules 14 are provided with in each unit cabinet, each module 14 is provided with two terminals A1, A2, and 9 module 14 number consecutivelies are N1-N9, module N1-N9 is connected successively by respective terminals A1, A2, and each unit cabinet is electrically connected with the 5th module N5 of its inside.In addition, three unit cabinets 11,12,13 adopt star-star connection mode, and are connected respectively three-phase high-voltage electrical network (A, B, C) by transformer unit 15, and its common link is labeled as mid point D.Wherein, transformer unit 15 comprises the transformer 151,152,153 be serially connected in respectively in three-phase circuit.Particularly, in the present embodiment, the module N1-N9 of transformer 151, unit cabinet 13 is connected with in turn in A circuitry phase, and the A1 end that the A1 of module N1 holds connection transformer 151, its A2 to hold connects N2, the A2 end of N2 connects the A1 end of N3, connects the A1 end of N9 successively, and the A2 end of N9 connects mid point D, and module N5 is electrically connected with unit cabinet 13, thus make unit cabinet 13 equal with the electromotive force of module N5.Same as above, the module N1-N9 of transformer 152, unit cabinet 12 is connected with in turn in B circuitry phase, and the A1 end that the A1 of module N1 holds connection transformer 152, its A2 to hold connects N2, the A2 end of N2 connects the A1 end of N3, connect the A1 end of N9 successively, the A2 end of N9 connects mid point D, and module N5 is electrically connected with unit cabinet 12, thus makes unit cabinet 12 equal with the electromotive force of module N5.Same as above, the module N1-N9 of transformer 153, unit cabinet 11 is connected with in turn in C circuitry phase, and the A1 end that the A1 of module N1 holds connection transformer 153, its A2 to hold connects N2, the A2 end of N2 connects the A1 end of N3, connect the A1 end of N9 successively, the A2 end of N9 connects mid point D, and module N5 is electrically connected with unit cabinet 11, thus makes unit cabinet 11 equal with the electromotive force of module N5.Be electrically connected with unit cabinet 11 by the module N5 in unit cabinet 11, the module N5 of unit cabinet 12 is electrically connected with unit cabinet 12, the module N5 of unit cabinet 13 is electrically connected with unit cabinet 13, thus make unit cabinet 11, 12, 13 reduce greatly with the electrical potential difference of its module N1-N9 inner separately, to reduce unit cabinet 11, 12, safety distance between 13 and its module N1-N9 inner separately, thus realize reducing unit cabinet 11, 12, the volume of 13, the volume of this block coupled in series type cabinet-type equipment 1 can be reduced simultaneously, reduce its infrastructure cost, packing cost and cost of transportation, and can reduce the requirements of installation space of client is limited.
With reference to shown in Fig. 2, the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment two provides.In the present embodiment, this block coupled in series type cabinet-type equipment 2 connects three-phase high-voltage electrical network (A, B, C) by reactor unit 25, and reactor unit 25 comprises the reactor 251,252,253 be connected respectively in three-phase high-voltage electrical network (A, B, C).This block coupled in series type cabinet-type equipment 2 comprises 21 unit cabinet 1-21, and the unit cabinet of every 7 serial connections is one group of employing star-star connection mode, its common link is labeled as mid point E, 6 module M1-M6 of series connection are provided with in each unit cabinet, each module is provided with two link A1-A2 equally, and the connecting line between the 3rd module of each unit cabinet and its inside and the 4th module is electrically connected, namely the electrical potential difference of unit cabinet and its internal module maximum only have 3 cell voltage and, and only require the safety distance of functional insulation, and the electrical potential difference between unit cabinet and unit cabinet only have 6 cell voltage and, only require the safety distance of functional insulation equally.
Particularly, reactor 251 and unit cabinet 1-7 is connected with in turn in A circuitry phase, and the A1 of the module M1 of unit cabinet 1 holds linked reactor 251, its A2 holds the A1 end connecting M2, the A2 end of module M2 connects the A1 end of M3, the A1 end of link block M6 successively, the A2 of module M6 holds the A1 end of the module M1 of linkage unit cabinet 2, the A2 end of module M1 connects the A1 end of M3, be sequentially connected in series the A1 end of the module M6 of unit cabinet 7, the A2 end of module M6 connects mid point E, and unit cabinet 1-7 is electrically connected with the connecting line between its 3rd inner separately module M3 and the 4th module M4 respectively, thus make unit cabinet 1-7 equal with the electromotive force of the tie point on module M3 and module M4 connecting line.Same as above, reactor 252 and unit cabinet 8-14 is connected with in turn in B circuitry phase, and the A1 of the module M1 of unit cabinet 8 holds linked reactor 252, its A2 holds the A1 end connecting M2, the A2 end of module M2 connects the A1 end of M3, the A1 end of link block M6 successively, the A2 of module M6 holds the A1 end of the module M1 of linkage unit cabinet 2, the A2 end of module M1 connects the A1 end of M3, be sequentially connected in series the A1 end of the module M6 of unit cabinet 14, the A2 end of module M6 connects mid point E, and unit cabinet 8-14 is electrically connected with the connecting line between its 3rd inner separately module M3 and the 4th module M4 respectively, thus make unit cabinet 8-14 equal with the electromotive force of the tie point on module M3 and module M4 connecting line.Same as above, reactor 253 and unit cabinet 15-21 is connected with in turn in C circuitry phase, and the A1 of the module M1 of unit cabinet 15 holds linked reactor 253, its A2 holds the A1 end connecting M2, the A2 end of module M2 connects the A1 end of M3, the A1 end of link block M6 successively, the A2 of module M6 holds the A1 end of the module M1 of linkage unit cabinet 2, the A2 end of module M1 connects the A1 end of M3, be sequentially connected in series the A1 end of the module M6 of unit cabinet 21, the A2 end of module M6 connects mid point E, and unit cabinet 15-21 is electrically connected with the connecting line between its 3rd inner separately module M3 and the 4th module M4 respectively, thus make unit cabinet 15-21 equal with the electromotive force of the tie point on module M3 and module M4 connecting line.
Be electrically connected by connecting line between unit cabinet 1-21 with its inner respective module M3 and M4, thus make unit cabinet 1-21 equal with the electromotive force of the tie point on this connecting line, thus the electrical potential difference of unit cabinet 1-21 and its module M1-M6 inner is separately reduced greatly, to reduce the safety distance between unit cabinet 1-21 and its module M1-M6 inner separately, thus realize the volume reducing unit cabinet 1-21, the volume of this block coupled in series type cabinet-type equipment 2 can be reduced simultaneously, reduce its infrastructure cost, packing cost and cost of transportation, and can reduce the requirements of installation space of client is limited.
With reference to shown in Fig. 3, the schematic diagram of the block coupled in series type cabinet-type equipment that embodiment three provides.In the present embodiment, number and the cascaded structure thereof of this block coupled in series type cabinet-type equipment 3 and facies unit cabinet every in Fig. 2 are identical, repeat no more herein.Block coupled in series type cabinet-type equipment 3 by the external three-phase high-voltage electrical network (A, B, C) of reactor 35, and adopts delta connection mode.Particularly, unit cabinet 1-7 is serially connected with between A phase and B phase, unit cabinet 8-14 is serially connected with between B phase and C phase, unit cabinet 15-21 is serially connected with between C phase and A phase, and the connecting line of unit cabinet 1-21 respectively between the 3rd corresponding module M3 and a 4th module M4 inner with it is electrically connected, equal with the electromotive force of the tie point on this connecting line to realize unit cabinet 1-21, thus the electrical potential difference of unit cabinet 1-21 and its module M1-M6 inner is separately reduced greatly, to reduce the safety distance between unit cabinet 1-21 and its module M1-M6 inner separately, thus realize the volume reducing unit cabinet 1-21, the volume of this block coupled in series type cabinet-type equipment 2 can be reduced simultaneously, reduce its infrastructure cost, packing cost and cost of transportation, and can reduce the requirements of installation space of client is limited.
The foregoing is only the preferred embodiment of utility model, but not any pro forma restriction is done to utility model.Those skilled in the art can impose various equivalent change and improvement on the basis of above-described embodiment, all equivalent variations of doing in right or modification, within the protection range that all should fall into utility model.
Claims (9)
1. a block coupled in series type cabinet-type equipment, for in three-phase high-voltage electrical network, it is characterized in that: comprise some unit cabinets, some modules of series connection are provided with in described each unit cabinet, high_voltage isolation is carried out on described unit cabinet and ground, and the connecting line between arbitrary module of each unit cabinet inside or adjacent block is electrically connected with described unit cabinet cabinet.
2. block coupled in series type cabinet-type equipment as claimed in claim 1, be is characterized in that: be installed on ground by High-Voltage Insulation support column bottom described unit cabinet.
3. block coupled in series type cabinet-type equipment as claimed in claim 1, is characterized in that: described unit cabinet top is provided with cooling fan, is isolated between described unit cabinet and described cooling fan by high-pressure insulator.
4. block coupled in series type cabinet-type equipment as claimed in claim 2 or claim 3, is characterized in that: described high-pressure insulator and described High-Voltage Insulation support column adopt SMC composite material to make.
5. block coupled in series type cabinet-type equipment as claimed any one in claims 1 to 3, is characterized in that: described some unit cabinets adopt stars or the leg-of-mutton mode of connection.
6. block coupled in series type cabinet-type equipment as claimed in claim 5, it is characterized in that: described unit cabinet adopts star-star connection mode, described some unit cabinets are divided into three groups, unit cabinet of each group is connected forming unit group mutually, the first end of described three unit groups is electrically connected with three-phase high-voltage electrical network as the input of unit cabinet, and the second end of described three unit groups is connected.
7. block coupled in series type cabinet-type equipment as claimed in claim 5, it is characterized in that: described unit cabinet adopts delta connection mode, described some unit cabinets are divided into three groups, unit cabinet of each group is connected forming unit group mutually, the first end of described three unit groups is electrically connected with three-phase high-voltage electrical network as the input of unit cabinet, the first end of described three unit groups and the electrical connection of the second end head and the tail.
8. block coupled in series type cabinet-type equipment as claimed in claims 6 or 7, is characterized in that: the concatenation module being provided with equal number in described unit cabinet.
9. block coupled in series type cabinet-type equipment as claimed in claims 6 or 7, is characterized in that: the first end of described unit group is by being connected with three-phase high-voltage electrical network after reactance or transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520969687.XU CN205178298U (en) | 2015-11-30 | 2015-11-30 | Cabinet type equipment of serial module type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520969687.XU CN205178298U (en) | 2015-11-30 | 2015-11-30 | Cabinet type equipment of serial module type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178298U true CN205178298U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520969687.XU Expired - Fee Related CN205178298U (en) | 2015-11-30 | 2015-11-30 | Cabinet type equipment of serial module type |
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| Country | Link |
|---|---|
| CN (1) | CN205178298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110622378A (en) * | 2017-03-15 | 2019-12-27 | 美国超导公司 | Medium-voltage static synchronous compensator for power distribution network |
-
2015
- 2015-11-30 CN CN201520969687.XU patent/CN205178298U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110622378A (en) * | 2017-03-15 | 2019-12-27 | 美国超导公司 | Medium-voltage static synchronous compensator for power distribution network |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20211130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |