CN103996978A - Photovoltaic direct current distribution cabinet and assembly method thereof - Google Patents
Photovoltaic direct current distribution cabinet and assembly method thereof Download PDFInfo
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- CN103996978A CN103996978A CN201410257818.1A CN201410257818A CN103996978A CN 103996978 A CN103996978 A CN 103996978A CN 201410257818 A CN201410257818 A CN 201410257818A CN 103996978 A CN103996978 A CN 103996978A
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Abstract
The invention discloses a photovoltaic direct current distribution cabinet and an assembly method thereof. The photovoltaic direct current distribution cabinet comprises a cabinet body, breaker assemblies, diode modules, an electrical panel assembly, a current sensor assembly and busbar assemblies, wherein the breaker assemblies, the diode modules, the electrical panel assembly and the current sensor assembly are installed on the front side of the middle inside the cabinet body, the rear side of the middle inside the cabinet body, the front side of the lower portion of the cabinet body and the front side of the lower portion of the cabinet body respectively, and the busbar assemblies are arranged in the middle of the cabinet body. The assembly method comprises the steps of installing a heat dissipation air channel system, installing the diode modules, installing the positive and negative busbar assemblies, installing the breaker assemblies, installing the electrical panel assembly and the current sensor assembly, and completing assembly. The whole photovoltaic direct current distribution cabinet is good in heat dissipation performance, simple in structure and easy to expand, manufacture and install. The cabinet body can be installed close to a wall, only the front end of the front surface of the cabinet body needs operation maintenance, use and maintenance are convenient, occupied space is reduced, the application range is expanded, and the construction and use cost is lowered for users.
Description
Technical field
The present invention relates to power distribution cabinet technical field.
Background technology
DC power distribution cabinet need to be realized the output of many header boxs distribution that confluxes, and generally need input branch road configuration counnter attack diode, DC switch to each, and reasonably structure is arranged very important.Existing DC power distribution cabinet, the whole cabinet having is arranged unreasonable, causes cabinet internal wiring complexity, Maintenance and Repair inconvenience.Different clients requires different to the distribution way of confluxing of DC power distribution cabinet, and part customer requirement DC power distribution cabinet possesses DC system insulating monitoring function; Different clients is different with specification demands to the brand of components and parts in DC power distribution cabinet, and the components and parts size of different brands/specification there are differences.DC power distribution cabinet exist customization require more, produce inconvenient problem.In DC power distribution cabinet, bypass diodes, for voltage differences between DC line counnter attack and balance photovoltaic arrays subarray and subarray, is generated heat generally more serious, existing DC power distribution cabinet, some designs are unreasonable, while causing the on-the-spot application of DC power distribution cabinet, heating is serious, and even diode bursts.Existing DC power distribution cabinet, what have need to carry out the maintenance of the cabinet back side, and attended operation door need to be offered in the DC power distribution cabinet back side,, on-the-spot mounting condition is had relatively high expectations, limit to DC power distribution cabinet application has been installed.
Photovoltaic DC power distribution cabinet (hereinafter to be referred as " DC power distribution cabinet ") is mainly used in large-sized photovoltaic power station; collect the direct current output of many photovoltaic combiner boxes of photovoltaic array system; for photovoltaic DC-to-AC converter provides DC distribution input; realize distribution isolated operation, line thunder protection protection, and carry out the acquisition and display of the information such as voltage, electric current, state of insulation.At present, there is following problem in DC power distribution cabinet:
1, DC power distribution cabinet need to be realized the output of many header boxs distribution that confluxes, and generally need input branch road configuration counnter attack diode, DC switch to each, and reasonably structure is arranged very important.Existing DC power distribution cabinet, the whole cabinet having is arranged unreasonable, causes cabinet internal wiring complexity, Maintenance and Repair inconvenience.
2, different clients requires difference to the distribution way of confluxing of DC power distribution cabinet, and part customer requirement DC power distribution cabinet possesses DC system insulating monitoring function; Different clients is different with specification demands to the brand of components and parts in DC power distribution cabinet, and the components and parts size of different brands/specification there are differences.DC power distribution cabinet exist customization require more, produce inconvenient problem.
3, in DC power distribution cabinet, bypass diodes, for voltage differences between DC line counnter attack and balance photovoltaic arrays subarray and subarray, is generated heat generally more serious, and the reasonable heat dissipation design of DC power distribution cabinet is extremely important.Existing DC power distribution cabinet, some designs are unreasonable, and while causing the on-the-spot application of DC power distribution cabinet, heating is serious, and even diode bursts.
4, existing DC power distribution cabinet, what have need to carry out the maintenance of the cabinet back side, and attended operation door need to be offered in the DC power distribution cabinet back side,, on-the-spot mounting condition is had relatively high expectations, limit to DC power distribution cabinet application has been installed.
How realizing DC power distribution cabinet generalization assembling, easily expansion, secure heat dissipation, easy care, effectively reduce assembling product production cost, improve application and autgmentability, is the target that numerous manufacturers are pursued.
The output current of single photovoltaic group string that polylith photovoltaic battery panel is connected in series the suitable voltage grade of formation is less, in photovoltaic large-sized photovoltaic electricity generation system, need to conflux to multichannel photovoltaic group string by photovoltaic combiner box; By DC power distribution cabinet, the output of confluxing of many photovoltaic combiner boxes is carried out to the secondary distribution that confluxes again; and output is connected with the direct current input of photovoltaic DC-to-AC converter; distribution isolated operation, line thunder protection protection are provided, and carry out the acquisition and display of the information such as voltage, electric current, state of insulation.As shown in Figure 1, for a kind of 8 tunnels specification DC power distribution cabinet schematic diagram that confluxes, the positive and negative direct current input of 8 photovoltaic combiner boxes, after being connected in parallel to bus rod respectively after the current sensor of 8 branch roads of DC power distribution cabinet, DC switch, counnter attack diode, export the general DC circuit breaker of DC switch or direct-current isolating switch; In figure, current sensor is supporting insulating monitor, is the configuration of part customer requirement; DC power distribution cabinet be input as 8 photovoltaic combiner boxes, DC power distribution cabinet is 8 branch roads configurations, a DC power distribution cabinet is converged on 8 tunnels, actual different client has different demands, is generally 6 tunnel ~ 12 tunnels configurations; In addition, for the components and parts that use in DC power distribution cabinet, different clients has different brands and specification demands, and the installation dimension difference to some extent of the device of different brands no-go gage lattice.To sum up, the customization fluctuation of DC power distribution cabinet is larger, and designing, produce the suitable DC power distribution cabinet that meets customer requirement is the target that each photovoltaic apparatus manufacturer constantly endeavours.
Due to developing rapidly and client's various demands of photovoltaic market, in industry outlet various forms of DC power distribution cabinet designs.
Granted publication CN 202268616 U utility model patents, Granted publication relates to a kind of DC power distribution cabinet, comprise cabinet, be multiplely distributed on circuit breaker in cabinet, be symmetricly set on the copper bar of breaker body upper and lower side and be separately positioned on UK terminal and the positive and negative electrode copper bar of circuit breaker both sides, each circuit breaker comprises breaker body and is symmetricly set on the copper bar binding post at the upper and lower two ends of breaker body, each group copper bar binding post all with the electric connection of circuit breaker inside; Electrode cable and negative pole cable are drawn and be respectively to cable in DC power distribution cabinet from UK terminal, electrode cable is connected with the positive pole of each circuit breaker, negative pole cable is connected with the negative pole of each circuit breaker, and last electrode cable and negative pole cable are pooled to respectively on anodal copper bar and negative pole copper bar.Granted publication CN 203085979 U utility model patents, Granted publication relates to the safe photovoltaic direct-current switch cabinet of a kind of easy-maintaining formula.Comprise switch cabinet, cabinet door, electric component and protective plate, be hinged with cabinet door on switch cabinet, electric component is fixed in switch cabinet.Granted publication CN 203415832 U utility model patents, Granted publication relates to a kind of circuit breaker arrangement of photovoltaic DC power distribution cabinet, belongs to photovoltaic distribution system technical field.Comprise power distribution cabinet, mounting panel, multiple DC circuit breaker, the external busbar of circuit breaker and bus-bar, mounting panel is fixed on power distribution cabinet.Granted publication CN 203481636 U utility model patents, Granted publication relates to a kind of novel photovoltaic DC power distribution cabinet, comprise cabinet and be arranged at the busbar group of confluxing in cabinet, multiple counnter attack diode, multiple DC circuit breaker, described cabinet front side is provided with Qianmen; It is characterized in that: counnter attack diode is located at the left and right sides in cabinet, DC circuit breaker is located at the inner side at Qianmen, and the busbar that confluxes is mounted between DC circuit breaker and counnter attack diode; Each counnter attack diode is electrically connected with corresponding DC circuit breaker by connecting busbar, and each DC circuit breaker is electrically connected with the busbar group of confluxing by connecting busbar.
Above prior art, is all further improved at aspects such as heat dispersion, structure, expansion and manufacture installations.
Summary of the invention
Technical problem to be solved by this invention is that a kind of photovoltaic DC power distribution cabinet and assemble method thereof that components and parts were put, were easy to expansion and assemble of being convenient to is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of photovoltaic DC power distribution cabinet, comprise cabinet, and described cabinet comprises cabinet two curb girders and cabinet fixed cross beam; It is characterized in that, also comprise the modular assembly being arranged in cabinet, described modular assembly comprises modular breaker assembly, diode modules, electric plates assembly, current sensor assembly and the busbar assembly that confluxes; Described breaker assembly is arranged on front side, middle part in cabinet, is mainly made up of the first standard electrical board component and several killer switches, and breaker assembly is fixed by connector and cabinet two curb girders; Described diode modules is vertically installed on middle part rear side in cabinet, is mainly made up of cooling fan, temperature relay, radiator and several diodes, and diode modules is fixed by bolt and nut and cabinet fixed cross beam, cabinet two curb girders; Described electric plates assembly is installed on cabinet lower front side, is mainly made up of electric plates and components and parts, fixes by bolt and nut and cabinet two curb girders; Described current sensor assembly is installed on cabinet lower front side, is mainly made up of several current sensors and the second standard electrical board component, fixes by bolt and nut and cabinet two curb girders; Electric plates assembly is positioned at current sensor assembly top; The described busbar assembly that confluxes is vertically installed on the zone line between breaker assembly and diode modules, fixes with cabinet fixed cross beam by fixed insulation.
In described cabinet, front is provided with dismountable protection network; On described electric plates assembly, offer the position, hole that corresponding killer switch is installed, and become equidistantly to arrange, position, described hole has four.
The radiator of described diode modules is cuboid; Number of diodes is one to five, becomes spacing to arrange and is installed on radiator; Cooling fan is installed on a termination of radiator; Temperature relay is installed on the central region of radiator.
Quadratic Finite Element device and protection device are installed on electric plates assembly; The quantity of the current sensor of current sensor assembly is installed according to demand.
Described photovoltaic DC power distribution cabinet also comprises heat dissipation wind channel system, the formation of heat dissipation wind channel system is: air inlet is offered in cabinet door bottom, DC power distribution cabinet front, cabinet top is provided with air outlet, and install in dismountable air outlet cooling fan and/or diode modules cooling fan is installed at air outlet place.
Cooling fan in air outlet cooling fan and/or diode modules is that the temperature relay start/stop by being installed in cabinet is controlled; In the time that temperature exceedes operating value, temperature relay is realized switch output, the power control loop on/off of controlling air outlet cooling fan and/or cooling fan, realizes the start/stop control of air outlet cooling fan and/or cooling fan, thereby realizes the heat radiation of DC power distribution cabinet.
An assemble method for photovoltaic DC power distribution cabinet, described photovoltaic DC power distribution cabinet is above-mentioned photovoltaic DC power distribution cabinet, comprises the steps:
Step 1: heat dissipation wind channel system is installed, comprises as follows step by step:
A, offer corresponding cabinet air inlet at the positive basifacial of DC power distribution cabinet cabinet, set air outlet at cabinet top;
B, air outlet cooling fan is installed at cabinet top outlet inlet place;
Step 2: diode modules is installed, comprises as follows step by step:
A, choose rectangular build radiator, and on radiator, offer maximum 5 diode mounting hole site can be installed, install temperature relay;
B, on radiator, install diode;
C, in a termination of radiator, install cooling fan;
D, the above-mentioned diode modules assembling is vertically installed on cabinet fixed cross beam by bolt and nut, and diode modules is positioned at cabinet middle and upper part posterior region, the radiator of diode is installed facing to cabinet front;
Step 3: the positive and negative busbar assembly that confluxes is installed, is comprised as follows step by step:
A, mounting hole site and wiring hole position on the positive and negative busbar that confluxes, are offered;
B, by fixed insulation and bolt and nut, the positive and negative busbar that confluxes is fixed on the fixed cross beam of cabinet successively, and is vertically installed on zone line in DC power distribution cabinet cabinet, the busbar that the confluxes output connection mouth that confluxes is positioned at bottom;
Step 4: breaker assembly is installed, is comprised as follows step by step:
A, assemble the first standard electrical board component, on the first standard electrical board component, offer killer switch installing hole, and become equidistantly to arrange, one to four killer switch can be installed;
B, according to the actual requirements specification and quantity, be installed on killer switch on the first standard electrical board component, forms modular breaker assembly;
C, the above-mentioned modularized circuit breaker assembly assembling is in a row installed on to middle and upper part, front side in cabinet, by bolt and nut, breaker assembly is fixedly connected with cabinet two curb girders;
Step 5: mounting electrical board component and current sensor assembly, comprise as follows step by step:
A, be ready to electric plates, needed Quadratic Finite Element device and protection device are installed on and on electric plates, form electric plates assembly;
B, assemble the second standard electrical board component, needed current sensor is installed on the second standard electrical board component and forms current sensor assembly;
C, electric plates assembly and current sensor assembly are installed on respectively to the front side lower area in cabinet, fix by bolt and nut and cabinet two curb girders, electric plates assembly is positioned at current sensor assembly top;
Step 6: connect cable or busbar between each assembly, complete the assembling of photovoltaic DC power distribution cabinet.
In above-mentioned steps two, multiple diode modules can be installed, multiple diode die composition spacing are vertically arranged on cabinet fixed cross beam.
In above-mentioned steps four, multiple modularized circuit breaker assemblies can be installed, multiple modularized circuit breaker assemblies are in a row installed on middle and upper part, front side in cabinet.
The present invention is directed to the deficiencies in the prior art, developed and be a kind ofly convenient to the components and parts DC power distribution cabinet good, favorable expandability of putting, dispel the heat, and cabinet internal mold blocking assembly and assemble method thereof are provided.From aspect modularized design and assemblings such as cabinet, input branch road DC switch assembly, counnter attack diode modules assembly, cooling systems, optimize the whole cabinet layout of DC power distribution cabinet and installation.Thereby ensure that complete machine heat dispersion is good, simple in structure, be easy to expansion and manufacture and install; The reliable wall of cabinet is installed, and only needs positive front-end operations to safeguard, working service facility, has reduced to take up room, and has expanded field of employment, has reduced user and has built use cost.
DC power distribution cabinet of the present invention is standardized cabinet, and primary clustering is modular breaker assembly, diode modules, electric plates assembly, current sensor assembly, busbar assembly confluxes.Specification modular assembly quantity or the specification in extension cabinet easily according to the actual requirements, thus the specification of carrying out DC power distribution cabinet expand, meet different demands application, and production and assembly convenient, be easy to mass and pipelining work production; Whole DC power distribution cabinet only needs front side Operation and Maintenance, in cabinet, there is the detachable protection network of safeguarding of piecemeal subregion, can realize installing by wall of DC power distribution cabinet, greatly expand the application places of DC power distribution cabinet, dwindle occupation of land space, saved construction use cost, Operation and Maintenance is safe and convenient to use.
Brief description of the drawings
Fig. 1 is a kind of 8 tunnels of the prior art specification DC power distribution cabinet schematic diagrams that conflux;
Fig. 2 is photovoltaic DC power distribution cabinet front schematic view of the present invention;
Fig. 3 is front schematic view in photovoltaic DC power distribution cabinet of the present invention;
Fig. 4 is right TV structure schematic diagram in photovoltaic DC power distribution cabinet of the present invention;
Fig. 5 is photovoltaic DC power distribution cabinet overhead view schematic diagram of the present invention;
Fig. 6 is the breaker assembly schematic diagram in the present invention;
Fig. 7 is the electric plates assembly schematic diagram in the present invention;
Fig. 8 is current sensor assembly schematic diagram of the present invention;
Fig. 9 is the diode modules schematic diagram in the embodiment of the present invention one;
Figure 10 is the diode modules schematic diagram in the embodiment of the present invention two;
Figure 11 removes protection network front schematic view in cabinet of the present invention in embodiment mono-;
Figure 12 removes protection network front schematic view in cabinet of the present invention in embodiment bis-.
Description of reference numerals: protection network 8, killer switch 201, the first standard electrical board component 202, diode 301, cooling fan 302, temperature relay 303, radiator 304, current sensor 501, the second standard electrical board component 502, air inlet 701, air outlet 702, air outlet cooling fan 703 in cabinet 1, breaker assembly 2, diode modules 3, electric plates assembly 4, current sensor assembly 5, the busbar assembly 6 that confluxes, cabinet.
Embodiment
The invention provides a kind of photovoltaic DC power distribution cabinet and assemble method thereof, as shown in Fig. 2 to Figure 12.Figure 11, Figure 12 are two kinds of embodiment schematic diagrames of the present invention.Photovoltaic DC power distribution cabinet is by protection network 8, heat dissipation wind channel system and cabinet internal mold blocking module composition in cabinet 1, cabinet.Modular assembly comprises breaker assembly 2, diode modules 3, electric plates assembly 4, current sensor assembly 5, busbar assembly 6 confluxes.Quantity or the specification of contained components and parts in the modular assembly of specification in can extension cabinet according to the actual requirements, thereby form multi-form DC power distribution cabinet, as shown in Figure 11, Figure 12,8 or 10 respectively of contained component numbers in modular assembly, converge a DC power distribution cabinet He10 road and converge a DC power distribution cabinet thereby form 8 tunnels.
Concrete scheme explanation:
1) totally form:
DC power distribution cabinet cabinet 1 cabinet door below, front is provided with air inlet 701, and cabinet top is provided with air outlet 702, and air outlet 702 places are provided with air outlet cooling fan.
Breaker assembly 2 is arranged on front side, middle part in cabinet, fixes by the connectors such as bolt and nut and cabinet two curb girders, and 2 one-tenth of multiple breaker assemblies keep the certain intervals installation of arranging up and down; Diode modules 3 is vertically installed on middle part rear side in cabinet, fixes about 3 one-tenth installations that are intervally arranged of multiple diode modules by bolt and nut and cabinet fixed cross beam and cabinet two curb girders; The zone line of breaker assembly 2 and diode modules 3, vertically installs the positive and negative busbar assembly 6 that confluxes in cabinet intermediate space, the positive and negative busbar assembly that confluxes is fixed by fixed insulation and cabinet fixed cross beam; Electric plates assembly 4 and current sensor assembly 5 are installed on respectively cabinet lower front side, fix by bolt and nut and cabinet two curb girders.
Electrical connection between each assembly connects by busbar or cable, the outside photovoltaic combiner box inlet wire of DC power distribution cabinet is directly connected to the inlet wire connection jaws place of each killer switch 201 on breaker assembly 2, direct current is through killer switch, connect by internal electric, be collected to the positive and negative busbar that confluxes of vertical installation through the counnter attack diode in diode modules 3, the positive and negative busbar bottom of confluxing offers external outlet wiring hole, for externally output connection.
Be installed between multiple breaker assemblies 2, electric plates assembly 4 and the current sensor of cabinet front side and keep suitable distance with bottom of cabinet bulk and top and arrange so that DC power distribution cabinet internally/external connection is connected.
In cabinet, front is provided with dismountable protection network, arranges respectively three according to top, middle and upper part, middle part, realizes the maintenance and operation of zones of different; And in corresponding killer switch relevant position, window is set so that operation; The unshielded net in region at bottom electric plates assembly 4 and current sensor assembly 5 places.
Whole DC power distribution cabinet design realizes modularization and forms, and is convenient to production and assembly and expansion.
breaker assembly:
As shown in Figure 6, breaker assembly 2 is mainly made up of the first standard electrical board component 202 and multiple killer switch 201, fixes by the connectors such as bolt and nut and cabinet two curb girders.On electric plates assembly 202, offer corresponding several conventional killer switch mounting hole site, and become equidistantly to arrange, one to four killer switch can be installed.When practical application, the killer switch that varying number is installed according to demand forms multiple modular breaker assemblies 2, in a row be installed on middle and upper part, front side in cabinet by multiple modular breaker assemblies 2 again, thereby realize the function of the different input of DC power distribution cabinet way.
Way of the present invention, can meet different size, the varying number input switch installation requirements of DC power distribution cabinet, and production and assembly is convenient and swift, is convenient to DC power distribution cabinet and confluxes and input the expansion of way and the mass production of DC power distribution cabinet.
diode modules:
As shown in Figure 9, Figure 10, diode modules 3 is mainly made up of diode 301, cooling fan 302, temperature relay 303 and radiator 304, is vertically installed on cabinet fixed cross beam by bolt and nut.Diode 301 according to demand quantity becomes spacing to arrange to be installed on radiator 304, and diode 301, cooling fan 302, temperature relay 303 and radiator 304 form the diode modules 3 of different size.5 diodes 301 are installed at most in each diode modules 3.Cooling fan 302 according to reality, whether install by demand, is installed on when needed a termination of radiator 304; The higher central region of temperature when temperature relay 303 is installed on radiator 304 actual motion, in the time that temperature exceedes operating value, it realizes switch output, as the power control loop start/stop control of cooling fan 302.
Way of the present invention, can meet different size, the varying number diode modules installation requirements of DC power distribution cabinet, and production and assembly is convenient and swift, is convenient to DC power distribution cabinet and confluxes and input the expansion of way and the mass production of DC power distribution cabinet.
electric plates assembly and current sensor assembly:
As shown in Figure 7, electric plates assembly 4 is mainly made up of electric plates and some components and parts, fixes by bolt and nut and cabinet two curb girders.This assembly is mainly used in installing needed Quadratic Finite Element device and protection device etc. in DC power distribution cabinet cabinet.
As shown in Figure 8, current sensor assembly 5 is mainly made up of multiple current sensors 501 and the second standard electrical board component 502, fixes by bolt and nut and cabinet two curb girders.On the second standard electrical board component 502, become the installing hole that offers of spacing, according to the actual demand of DC power distribution cabinet, the current sensor 501 of varying number is installed.In addition,, in the time that DC power distribution cabinet does not need current sensor, when DC power distribution cabinet assembling is produced, current sensor assembly can be installed.
Way of the present invention, can meet the installation requirements of the different size of DC power distribution cabinet, and production and assembly is convenient and swift, are convenient to the expansion of DC power distribution cabinet and the mass production of DC power distribution cabinet.
heat dissipation wind channel system:
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, cabinet door bottom, DC power distribution cabinet front offers air inlet 701, and cabinet top is provided with air outlet 702, and air outlet 702 places are provided with dismountable air outlet cooling fan 703.The outer cold airflow of cabinet enters in cabinet by cabinet bottom air inlet 701, and upwards flows, and in the way of flowing, relevant components and parts is carried out to cooling convection current, is finally discharged outside cabinet by the air outlet cooling fan at air outlet 702 places.In cabinet, in diode modules 3, cooling fan 302 is installed according to the actual requirements, strengthens the heat radiation of diode modules.Can carry out different combinations according to the actual demand of DC power distribution cabinet: cabinet top outlet inlet 702 place's uneasinesses take on air port cooling fan, cooling fan 302 is installed in diode modules 3, by the upwards air draft of blower fan 302, the interior thermal current of final cabinet ejects air port 702 by cabinet and discharges; Air outlet cooling fan is installed at cabinet top outlet inlet 702 places, and cooling fan 302 is not installed in diode modules 3, realizes cool cycles in cabinet by the outside air draft of air outlet cooling fan at air outlet 702 places; Air outlet cooling fan is installed at cabinet top outlet inlet 702 places, and cooling fan 302 is also installed in diode modules 3, strengthens heat radiation in cabinet, to meet the more severe installation site of DC power distribution cabinet thermal environment.
It is all that temperature relay 303 start/stops by being installed on in-cabinet temperature higher position are controlled that above-mentioned cabinet ejects cooling fan 302 in air outlet cooling fan or the diode modules 3 at 702 places, air port.In the time that temperature exceedes operating value, temperature relay 303 is realized switch output, controls the power control loop on/off of cooling fan, thereby realizes the start/stop control of cooling fan.
By above-mentioned 1), 2), 3), 4), 5) way, can effectively carry out the specification of DC power distribution cabinet and expand, meet different demands application, and production and assembly are convenient, are easy to mass and pipelining work production; In addition, whole DC power distribution cabinet only needs front side behaviour to safeguard, can realize installing by wall of DC power distribution cabinet, has greatly expanded the application places of DC power distribution cabinet, has reduced occupation of land space, has saved construction use cost.
Embodiment mono-: be that a DC power distribution cabinet is converged on 8 tunnels, as shown in Fig. 9, Figure 11.
Embodiment bis-: Wei10 converges on road a DC power distribution cabinet, as shown in Figure 10, Figure 12.
Above-described embodiment one and embodiment bis-are the DC power distribution cabinet that photovoltaic industry is conventional, and institute's difference is mainly the quantity difference of diode, killer switch, current sensor, and other guide is identical.Adopt way of the present invention, the modular assembly consisting of the component number of varying number carries out system and forms assembling, has well realized production compatibility and application extension.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within being all included in protection scope of the present invention.
Claims (9)
1. a photovoltaic DC power distribution cabinet, comprises cabinet, and described cabinet comprises cabinet two curb girders and cabinet fixed cross beam; It is characterized in that, also comprise the modular assembly being arranged in cabinet, described modular assembly comprises modular breaker assembly, diode modules, electric plates assembly, current sensor assembly and the busbar assembly that confluxes; Described breaker assembly is arranged on front side, middle part in cabinet, is mainly made up of the first standard electrical board component and several killer switches, and breaker assembly is fixed by connector and cabinet two curb girders; Described diode modules is vertically installed on middle part rear side in cabinet, is mainly made up of cooling fan, temperature relay, radiator and several diodes, and diode modules is fixed by bolt and nut and cabinet fixed cross beam, cabinet two curb girders; Described electric plates assembly is installed on cabinet lower front side, is mainly made up of electric plates and components and parts, fixes by bolt and nut and cabinet two curb girders; Described current sensor assembly is installed on cabinet lower front side, is mainly made up of several current sensors and the second standard electrical board component, fixes by bolt and nut and cabinet two curb girders; Electric plates assembly is positioned at current sensor assembly top; The described busbar assembly that confluxes is vertically installed on the zone line between breaker assembly and diode modules, fixes with cabinet fixed cross beam by fixed insulation.
2. photovoltaic DC power distribution cabinet as claimed in claim 1, is characterized in that, in described cabinet, front is provided with dismountable protection network; On described electric plates assembly, offer the position, hole that corresponding killer switch is installed, and become equidistantly to arrange, position, described hole has four.
3. photovoltaic DC power distribution cabinet as claimed in claim 1, is characterized in that, the radiator of described diode modules is cuboid; Number of diodes is one to five, becomes spacing to arrange and is installed on radiator; Cooling fan is installed on a termination of radiator; Temperature relay is installed on the central region of radiator.
4. photovoltaic DC power distribution cabinet as claimed in claim 1, is characterized in that, Quadratic Finite Element device and protection device are installed on electric plates assembly; The quantity of the current sensor of current sensor assembly is installed according to demand.
5. the photovoltaic DC power distribution cabinet as described in claim 1 or 3, it is characterized in that, also comprise heat dissipation wind channel system, the formation of heat dissipation wind channel system is: air inlet is offered in cabinet door bottom, DC power distribution cabinet front, cabinet top is provided with air outlet, and install in dismountable air outlet cooling fan and/or diode modules cooling fan is installed at air outlet place.
6. a kind of photovoltaic DC power distribution cabinet as claimed in claim 5, is characterized in that, the cooling fan in air outlet cooling fan and/or diode modules is that the temperature relay start/stop by being installed in cabinet is controlled; In the time that temperature exceedes operating value, temperature relay is realized switch output, the power control loop on/off of controlling air outlet cooling fan and/or cooling fan, realizes the start/stop control of air outlet cooling fan and/or cooling fan, thereby realizes the heat radiation of DC power distribution cabinet.
7. an assemble method for photovoltaic DC power distribution cabinet, described photovoltaic DC power distribution cabinet is the photovoltaic DC power distribution cabinet described in any one in claim 1 to 6, comprises the steps:
Step 1: heat dissipation wind channel system is installed, comprises as follows step by step:
A, offer corresponding cabinet air inlet at the positive basifacial of DC power distribution cabinet cabinet, set air outlet at cabinet top;
B, air outlet cooling fan is installed at cabinet top outlet inlet place;
Step 2: diode modules is installed, comprises as follows step by step:
A, choose rectangular build radiator, and on radiator, offer maximum 5 diode mounting hole site can be installed, install temperature relay;
B, on radiator, install diode;
C, in a termination of radiator, install cooling fan;
D, the above-mentioned diode modules assembling is vertically installed on cabinet fixed cross beam by bolt and nut, and diode modules is positioned at cabinet middle and upper part posterior region, the radiator of diode is installed facing to cabinet front;
Step 3: the positive and negative busbar assembly that confluxes is installed, is comprised as follows step by step:
A, mounting hole site and wiring hole position on the positive and negative busbar that confluxes, are offered;
B, by fixed insulation and bolt and nut, the positive and negative busbar that confluxes is fixed on the fixed cross beam of cabinet successively, and is vertically installed on zone line in DC power distribution cabinet cabinet, the busbar that the confluxes output connection mouth that confluxes is positioned at bottom;
Step 4: breaker assembly is installed, is comprised as follows step by step:
A, assemble the first standard electrical board component, on the first standard electrical board component, offer killer switch installing hole, and become equidistantly to arrange, one to four killer switch can be installed;
B, according to the actual requirements specification and quantity, be installed on killer switch on the first standard electrical board component, forms modular breaker assembly;
C, the above-mentioned modularized circuit breaker assembly assembling is installed on to middle and upper part, front side in cabinet, by bolt and nut, breaker assembly is fixedly connected with cabinet two curb girders;
Step 5: mounting electrical board component and current sensor assembly, comprise as follows step by step:
A, be ready to electric plates, needed Quadratic Finite Element device and protection device are installed on and on electric plates, form electric plates assembly;
B, assemble the second standard electrical board component, needed current sensor is installed on the second standard electrical board component and forms current sensor assembly;
C, electric plates assembly and current sensor assembly are installed on respectively to the front side lower area in cabinet, fix by bolt and nut and cabinet two curb girders, electric plates assembly is positioned at current sensor assembly top;
Step 6: connect cable or busbar between each assembly, complete the assembling of photovoltaic DC power distribution cabinet.
8. the assemble method of photovoltaic DC power distribution cabinet as claimed in claim 7, is characterized in that, in step 2, multiple diode modules is installed, and multiple diode die composition spacing are vertically arranged on cabinet fixed cross beam.
9. the assemble method of photovoltaic DC power distribution cabinet as claimed in claim 7, is characterized in that, in step 4, multiple modularized circuit breaker assemblies is installed, and multiple modularized circuit breaker assemblies are in a row installed on middle and upper part, front side in cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257818.1A CN103996978B (en) | 2014-06-12 | 2014-06-12 | A kind of photovoltaic DC power distribution cabinet and assemble method thereof |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533353A (en) * | 2016-11-30 | 2017-03-22 | 合肥源擎电气科技有限公司 | Concentrated high-power off-network photovoltaic controller |
| CN110676705A (en) * | 2019-10-13 | 2020-01-10 | 国网山东省电力公司高密市供电公司 | Closed metering cabinet and use method thereof |
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| JPH10336807A (en) * | 1998-06-01 | 1998-12-18 | Hitachi Ltd | Distribution board |
| CN202268616U (en) * | 2011-10-24 | 2012-06-06 | 深圳市禾望电气有限公司 | DC power distribution cabinet |
| CN203085979U (en) * | 2013-03-19 | 2013-07-24 | 新疆昆仑电气有限公司 | Easy-maintenance safe photovoltaic direct-current switch cabinet |
| CN203415832U (en) * | 2013-09-03 | 2014-01-29 | 常熟开关制造有限公司(原常熟开关厂） | Breaker arrangement structure of photovoltaic DC power distribution cabinet |
| CN203481636U (en) * | 2013-09-04 | 2014-03-12 | 常熟开关制造有限公司(原常熟开关厂） | Novel photovoltaic dc power distribution cabinet |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10336807A (en) * | 1998-06-01 | 1998-12-18 | Hitachi Ltd | Distribution board |
| CN202268616U (en) * | 2011-10-24 | 2012-06-06 | 深圳市禾望电气有限公司 | DC power distribution cabinet |
| CN203085979U (en) * | 2013-03-19 | 2013-07-24 | 新疆昆仑电气有限公司 | Easy-maintenance safe photovoltaic direct-current switch cabinet |
| CN203415832U (en) * | 2013-09-03 | 2014-01-29 | 常熟开关制造有限公司(原常熟开关厂） | Breaker arrangement structure of photovoltaic DC power distribution cabinet |
| CN203481636U (en) * | 2013-09-04 | 2014-03-12 | 常熟开关制造有限公司(原常熟开关厂） | Novel photovoltaic dc power distribution cabinet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533353A (en) * | 2016-11-30 | 2017-03-22 | 合肥源擎电气科技有限公司 | Concentrated high-power off-network photovoltaic controller |
| CN106533353B (en) * | 2016-11-30 | 2018-07-31 | 合肥源擎电气科技有限公司 | A kind of centralization high power off-network photovoltaic controller |
| CN110676705A (en) * | 2019-10-13 | 2020-01-10 | 国网山东省电力公司高密市供电公司 | Closed metering cabinet and use method thereof |
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| Publication number | Publication date |
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| CN103996978B (en) | 2016-03-30 |
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