CN205883078U - Photovoltaic inverter system on water - Google Patents
Photovoltaic inverter system on water Download PDFInfo
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- CN205883078U CN205883078U CN201620883676.4U CN201620883676U CN205883078U CN 205883078 U CN205883078 U CN 205883078U CN 201620883676 U CN201620883676 U CN 201620883676U CN 205883078 U CN205883078 U CN 205883078U
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- converter
- inverter system
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a photovoltaic inverter system on water. Particularly, the utility model discloses a photovoltaic inverter system on water includes dc bus, inverter unit and wave filter, wherein, the dc bus inverter unit with the wave filter is adorned respectively in direct current cabinet, contravariant cabinet and filtering cabinet and electricity connection in proper order, the direct current cabinet the contravariant cabinet with the filtering cabinet is arranged in the dc -to -ac converter room, photovoltaic inverter system on water is still including cooling module and functional module, wherein, the cooling module be used for reducing the dc -to -ac converter temperature, and the functional module be used for the monitoring inverter unit and/or the electric current of wave filter to based on the electric current regulation and control of monitoring the work of cooling module. The utility model discloses keep temperature in the dc -to -ac converter room is in near suitable operating temperature, the life of each components and parts in the extension dc -to -ac converter, the work efficiency of improvement dc -to -ac converter.
Description
Technical field
This utility model relates to photovoltaic DC-to-AC converter technical field, relates more specifically to photovoltaic inverter system waterborne.
Background technology
DC cabinet, inverter cabinet, filter cabinet and the components and parts of other generation high temperature are had inside photovoltaic DC-to-AC converter.In normal condition
Under, only to lower the temperature by simple exhaust fan, actual effect is unsatisfactory, especially summer, for 750kW and above big merit thereof
Rate inverter, the electrical equipment in inverter room is easy to, because high temperature produces the phenomenons such as tripping operation, fuse failure, even have fire
Hidden danger；It practice, the suitable operating temperature of electrical equipment in inverter box is typically at about+35 DEG C, at this temperature value
Neighbouring work can improve stability, the service life of components and parts and the economic benefit of photovoltaic plant of electrical equipment work.
Existing photovoltaic DC-to-AC converter operating temperature control method is whether the temperature worked by computer monitoring inverter is surpassed
Go out its predetermined temperature threshold value, by PLC controls water circulating pump, electric T-shaped valve and Heat Fan with
Start internal circulation system.Regulator control system is complex, and input cost is higher.
Therefore, this area still lacks the simple effective and method of low cost control photovoltaic DC-to-AC converter operating temperature and sets
Standby.This utility model aims to the inverter of photovoltaic electric welding waterborne, by cooling water temperature, in making inverter room with this
Temperature is maintained near suitable operating temperature, and in prolongation inverter, in the service life of each components and parts, improve the work of inverter
Efficiency.
Utility model content
The purpose of this utility model is at the inverter for photovoltaic electric welding waterborne, utilizes waters, photovoltaic DC-to-AC converter place
Water directly reduces photovoltaic DC-to-AC converter operating temperature, is changed by the current transformer monitoring current in functional module, regulation cooling
Module is lowered the temperature so that the temperature in inverter room is maintained near suitable operating temperature, each unit device in extending inverter
In the service life of part, improve the work efficiency of inverter.
For achieving the above object, this utility model have employed techniques below scheme:
A kind of photovoltaic inverter system waterborne, it is characterised in that described photovoltaic inverter system waterborne include dc bus,
Inversion unit and wave filter, wherein, described dc bus, described inversion unit and described wave filter are loaded on DC cabinet, inverse respectively
In becoming cabinet and filter cabinet and be sequentially connected electrically；Described DC cabinet, described inverter cabinet and described filter cabinet are arranged in inverter room；
Described photovoltaic inverter system waterborne also includes cooling module and functional module, and wherein, described cooling module is used for reducing inverse
Become device temperature, and described functional module is for monitoring described inversion unit and/or the electric current of described wave filter, and based on being supervised
The work of cooling module described in the current regulation surveyed.
Described cooling module is water cooling module, and described water cooling module is provided with for making cooling water circulation
Circulating water pump device.
In another preference, described functional module is electrically connected with described cooling module, thus described in regulation and control
The running speed of circulating water pump device.
Described functional module includes current transformer, PLC, relay and converter,
Wherein said current transformer is for monitoring inversion unit and/or the electric current of described wave filter, and monitoring is believed
Number pass to described PLC；
Described PLC, for accepting the monitoring signal of described current transformer, produces the first control signal, and will
First control signal passes to described relay；
Described relay is for accepting the first control signal from described PLC, and second will produced
Control signal passes to described converter；
Described converter is for accepting the second control signal from described relay, and regulates and controls described cooling module
Work.
Described functional module also includes transmitter and analog acquisition module, wherein said transmitter and analog acquisition module
It is arranged between described current transformer and described PLC；
Wherein, described transmitter is adopted for the monitoring signal from described current transformer is passed to described simulation
Collection module；
And described analog acquisition module is for being transferred to described PLC by the monitoring gathered signal.
Described functional module is additionally provided with for storage from analog acquisition module and the computer of the information of PLC,
Described computer is connected with the described outfan of analog acquisition module and the outfan of PLC.
The current transformer of described functional module is arranged at the ac cable port of export of described photovoltaic DC-to-AC converter.
In another preference, described photovoltaic inverter system waterborne also includes being arranged in distribution in described inverter room
Cabinet.
In another preference, described functional module is arranged at the top of described power distribution cabinet.
Described cooling module includes circulating water pipeline and is arranged at the circulating water pump device in described circulating water pipeline.
Described circulating water pipeline includes rising water cooling tube, intermediate temperature drop water cooling tube and declining water cooling tube, wherein said
Intermediate temperature drop water cooling tube carries out heat exchange with described inversion unit and/or described wave filter.
Described intermediate temperature drop water cooling tube is arranged at inside photovoltaic DC-to-AC converter, is arranged in after inverter cabinet and DC cabinet,
And near selected from the heating element of lower group: inversion crane span structure, wave filter or a combination thereof.
The intermediate temperature drop water cooling tube of described cooling module is screw type.
In another preference, the intermediate temperature drop water cooling tube of described cooling module may be disposed so that " M " type intermediate temperature drop water-cooled
Pipe.
In another preference, the intermediate temperature drop water cooling tube of described cooling module may be disposed so that " E " type intermediate temperature drop water-cooled
Pipe.
In another preference, described cooling module is provided with water-cooling cooling device and Wind cooling temperature reducing device.
In another preference, described functional module is additionally provided with temperature probe.
In another preference, described functional module is additionally provided with infrared temperature sensor, and described infrared temperature sensor is used
In monitoring inversion unit and/or filter temperature.
In another preference, described temperature probe is passive probe.
In another preference, described inverter system also includes inverter plummer, and described inverter plummer is arranged
It is used for carrying described inverter room in the lower section in described inverter room.
In should be understood that in the range of this utility model, above-mentioned each technical characteristic of the present utility model and below (as implement
Example) in can be combined with each other between each technical characteristic of specifically describing, thus constitute new or preferred technical scheme.It is limited to
Length, tires out the most one by one at this and states.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Fig. 1 shows the schematic layout pattern of a photovoltaic inverter system waterborne of the present utility model.
In accompanying drawing, each mark is as follows:
10-dc bus；
11-DC cabinet；
20-inversion unit；
21-inverter cabinet；
30-wave filter；
31-filter cabinet；
40-functional module；
41-PLC controller；
42-relay；
43-converter；
61-power distribution cabinet；
72-ac cable entrance；
73-ac cable exports；
50-cooling module；
51-water circulating pump；
52-rises water cooling tube；
Water cooling tube in the middle of 53-；
54-declines water cooling tube；
74-inverter cushion cap；
100-inverter room.
Detailed description of the invention
The present inventor, through extensively in-depth study, develops a kind of photovoltaic inverter system waterborne.This system combines
The feature of photovoltaic DC-to-AC converter waterborne, by arranging specific current monitoring device, thus the sensitiveest regulates and controls cooling module rapidly
The working condition of (water cooling module), so that the temperature in inverter room is maintained near suitable operating temperature, extends
In the service life of each components and parts in inverter, improve the work efficiency of inverter.Complete this utility model on this basis.
Term
As used herein, term " photovoltaic DC-to-AC converter " refers to a kind of device that photovoltaic generation is changed into alternating current, this device
Connect resistance capacitance by power electronic devices (MOSFET, IGBT etc.), in the way of pulse width modulation, control the logical of device
Disconnected, the unidirectional current that header box transmission is come is transformed into alternating current, completes the MPPT maximum power point tracking (MPPT) of photovoltaic module simultaneously,
Ensure Based Intelligent Control and anti-islanding effect etc..
As used herein, term " inverter room " refers to the building for placing inverter.Generally, outside box inverter room
Shell typically uses frame structure, and base is welding type channel-section steel structure, and the inside uses frame structure, with reinforcement welding as framework,
Surrounding loads thermal insulation layer.
As used herein, term " photovoltaic inverter system waterborne ", " photovoltaic inverter system ", " inverter " etc. are interchangeable
Use.
Photovoltaic inverter system waterborne
This utility model provides a kind of photovoltaic inverter system waterborne, and it is that one directly utilizes photovoltaic DC-to-AC converter waterborne
The system that following water is directly lowered the temperature.
In another preference, described functional module gathers photovoltaic DC-to-AC converter outlet actual current by current transformer and believes
Number, current transformer is electrically connected with measuring transducer, and actual current signal is changed into analog current signal, pick-up by measuring transducer
The outfan of device and the input of analog acquisition module are electrically connected, the outfan of analog acquisition module and the input of PLC
It is electrically connected, the analog current signal collected is input in PLC, the outfan of PLC and the input of relay
End is electrically connected, and regulates and controls cooling module, thus reduces the purpose of inverter temperature.
In another preference, by the current in waters, photovoltaic DC-to-AC converter place in cooling module as described in regulation (accelerated)
Speed, thus within the temperature range of being reduced to the temperature of inverter set.
In another preference, in described cooling module, by water circulating pump by the water in waters, photovoltaic DC-to-AC converter place
It is pumped through lifting pipe, intermediate temperature drop water cooling tube and declines water cooling tube, by declining water cooling tube, the water after heat exchange being sent back to former
Waters, wherein, lifting pipe enters the inside of inverter together with direct current cables from cable inlet, and intermediate temperature drop water cooling tube is positioned at
Inside photovoltaic DC-to-AC converter, it is arranged in after inverter cabinet and DC cabinet, near the heating element such as inversion crane span structure and wave filter, under
Downcomer connects from cable outlet together with direct current cables.
In another preference, the intermediate temperature drop water cooling tube (53) of described cooling module may be disposed so that screw type.
In another preference, the intermediate temperature drop water cooling tube (53) of described cooling module may be disposed so that " M " type intermediate temperature drop
Water cooling tube；
In another preference, the intermediate temperature drop water cooling tube (53) of described cooling module may be disposed so that " E " type intermediate temperature drop
Water cooling tube.
In another preference, the water-cooling cooling device in described cooling module is operated together with Wind cooling temperature reducing device, connection
Close cooling.
In another preference, described functional module is additionally provided with temperature sensor (such as infrared temperature sensor), with institute
State current transformer collocation to use.
In another preference, described functional module installs temperature probe, uses with the collocation of above-mentioned current transformer.
In another preference, described functional module is additionally provided with for storage from analog acquisition module and PLC
The computer of information.
Below in conjunction with specific embodiment, this utility model is expanded on further.Should be understood that these embodiments are merely to illustrate this
Utility model rather than limit scope of the present utility model.Additionally, accompanying drawing is schematic diagram, therefore this utility model device and setting
Standby is not limited by size or the ratio of described schematic diagram.
As it is shown in figure 1, this photovoltaic inverter system waterborne is mainly by dc bus 10, inversion unit 20, wave filter 30, merit
Energy module 40 and cooling module 50, wherein, described dc bus 10, described inversion unit 20 and described wave filter 30 are loaded on respectively
DC cabinet 11, inverter cabinet 21 and filter cabinet 31 are interior and are sequentially connected electrically, described DC cabinet 11, described inverter cabinet 21 and described filtering
Cabinet 31 is arranged in inverter room 100, and described photovoltaic inverter system waterborne utilizes the water heat exchange in waters, photovoltaic DC-to-AC converter place
Reduce own temperature, by described functional module monitoring current scope, control to adjust cooling module, reduce inverter temperature to setting
In the range of fixed temperature.
Functional module 40 is arranged at the top of power distribution cabinet 61, and described power distribution cabinet is arranged in described inverter room 100.Described
Functional module 40 includes current transformer, transmitter, analog acquisition module, PLC 41, relay 42, converter 43, meter
Calculation machine etc..Inverter system also includes that inverter plummer, described inverter plummer 74 are arranged at described inverter room 100
Lower section is used for carrying described inverter room 100.
Functional module gathers photovoltaic DC-to-AC converter outlet actual current signal, current transformer and measurement by current transformer
Transmitter is electrically connected, and actual current signal is changed into analog current signal by measuring transducer, and outfan and the simulation of transmitter are adopted
The input of collection module is electrically connected, and the outfan of analog acquisition module and the input of PLC 41 are electrically connected, the mould that will collect
Intend current signal to be input in PLC 41, be saved in computer simultaneously, program in PLC 41, according to output
Electric current and the positive correlation of inverter temperature, correspond to inverter temperature, PLC 41 by the analog current signal of collection
Outfan and the input of relay 42 be electrically connected, regulate and control converter 43 by relay 42 and implement instruction, regulate and control cooling module,
It is finally reached the purpose reducing inverter temperature.
Cooling module includes rising water cooling tube 52, intermediate temperature drop water cooling tube 53, declining water cooling tube 54 and water circulating pump 51 etc.
Device.
In cooling module, by water circulating pump 51, the water in waters, photovoltaic DC-to-AC converter place is pumped through lifting pipe
52, intermediate temperature drop water cooling tube 53 and decline water cooling tube 54, send the water after heat exchange back to former waters by declining water cooling tube 54, its
In, rise water cooling tube 52 and enter the inside of inverter, intermediate temperature drop water cooling tube together with direct current cables from direct current cables entrance 72
53 are positioned at inside photovoltaic DC-to-AC converter, are arranged in after inverter cabinet 21 and DC cabinet 11, near inversion crane span structure and wave filter 30 etc.
Heating element, declines water cooling tube 54 and connects from direct current cables outlet 73 together with direct current cables.
This utility model is intended to, using the rotating speed n of motor as controlled device, control to cool down water by the size of rotating speed n
Flow velocity, and then control the output of inverter.
Regulation and control method
In one embodiment, according to formulaAnd the output voltage of inverter maintains essentially in about+315V,
Therefore, the output of inverter, the output of inverter and its internal temperature can just be obtained by measuring output electric current
It is positively related, temperature can be divided into several stage, optimum temperature T0It is 35 DEG C, T1It is 40 DEG C, T2It is 50 DEG C, T3It is 60 DEG C,
T4It it is 70 DEG C, from T0--T4Corresponding power is P0-P4, change the working environment in inverter room by regulation power.
When output is at P0-P1Time, motor does not works；
When output is at P1-P2Time, the rotating speed of motor is n1, this rotating speed enables to the output P of inverter and subtracts
Little to P0-P1；
When output is at P2-P3Time, the rotating speed of motor is n2, this rotating speed enables to the output P of inverter and subtracts
Little to P0-P1；
When output is at P3-P4Time, the rotating speed of motor is n3, this rotating speed enables to the output P of inverter and subtracts
Little to P0-P1。
The output being made inverter by control and regulation maintains P always0-P1, increase each electric unit device of inverter
The stability of part work, improves the economic benefit of photovoltaic plant.
In this utility model, typically, by current transformer and measuring transducer, actual current signal is changed into
Analogue signal.The outfan of transmitter is connected with the input of analog acquisition module, by the output point of analog acquisition module and
The input of PLC (41) connects, and the signal collected is directly inputted to PLC (41), passes through PLC
(41) reading signal, temperature corresponding in the current signal set up changes in program inverter body, such as 10mA is corresponding
35 DEG C, corresponding 60 DEG C of corresponding 50 DEG C of corresponding 40 DEG C of 12mA, 15mA, 20mA.
Programming in PLC (41), according to the positive correlation of output electric current with inverter temperature, the mould that will gather
Intend current signal and correspond to inverter temperature, corresponding 50 DEG C of corresponding 40 DEG C of corresponding 35 DEG C of such as 10mA, 12mA, 15mA, 20mA pair
Answering 60 DEG C, PLC is according to corresponding relation, according to the region of current value, controls relay (42) and performs different instructions,
Such as I ∈ (10mA-12mA), relay (42) performs instruction 1, as I ∈ (12mA-15mA)；Relay (42) performs
Instruction 2, as I ∈ (15mA-20mA)；Relay (42) performs instruction 3；The outfan of all instructions is all connected with converter,
When instructing 1, the frequency of converter (43) is f1, and when instructing 2, the frequency of converter (43) is f2, when instructing 3, frequency conversion
The frequency of device (43) is f3；Outfan and the water circulating pump (51) of converter (43) are directly electrically connected, and control according to the size of frequency
The rotating speed of water circulating pump processed (51), and then control recirculated water flow velocity, when frequency is f1, the rotating speed of water circulating pump (51) is n1,
When frequency is f2, the rotating speed of water circulating pump (51) is n2, and when frequency is f3, the rotating speed of water circulating pump (51) is n3, wherein
N3 ＞ n2 ＞ n1, by the control to cooling water flow velocity so that photovoltaic DC-to-AC converter electric current is maintained between 10mA-12mA.
Major advantage of the present utility model includes:
A () makes the temperature in photovoltaic DC-to-AC converter room waterborne be maintained near suitable operating temperature.
B () reduces production and equipment cost.
C () changes the running environment of each equipment in photovoltaic DC-to-AC converter room waterborne, extend the service life of water components and parts.
D () improves the stability of the work of photovoltaic DC-to-AC converter waterborne.
E () improves the economic benefit of transformer station.
Therefore, this utility model can effectively solve the electrical equipment in photovoltaic DC-to-AC converter room because of high temperature tripping operation, fuse failure
And the problem such as fire, improve safety and decrease production cost.
The all documents mentioned at this utility model are incorporated as reference the most in this application, just as each document quilt
It is individually recited as with reference to like that.In addition, it is to be understood that after having read above-mentioned teachings of the present utility model, this area skill
This utility model can be made various changes or modifications by art personnel, and these equivalent form of values fall within the application claims equally
Book limited range.
Claims (10)
1. a photovoltaic inverter system waterborne, it is characterised in that described photovoltaic inverter system waterborne includes dc bus, inverse
Become unit and wave filter,
Wherein, described dc bus, described inversion unit and described wave filter are loaded in DC cabinet, inverter cabinet and filter cabinet respectively
And be sequentially connected electrically；
Described DC cabinet, described inverter cabinet and described filter cabinet are arranged in inverter room；
Described photovoltaic inverter system waterborne also includes cooling module and functional module,
Wherein, described cooling module is used for reducing inverter temperature, and described functional module is used for monitoring described inversion list
First and/or the electric current of described wave filter, and based on the work of cooling module described in the current regulation monitored.
Photovoltaic inverter system waterborne the most as claimed in claim 1, it is characterised in that described cooling module is water cooling mould
Block, and described water cooling module is provided with for making cooling water circulation circulating water pump device.
Photovoltaic inverter system waterborne the most as claimed in claim 1, it is characterised in that described functional module includes Current Mutual Inductance
Device, PLC, relay and converter,
Wherein said current transformer is for monitoring inversion unit and/or the electric current of described wave filter, and is passed by monitoring signal
Pass described PLC；
Described PLC, for accepting the monitoring signal of described current transformer, produces the first control signal, and by first
Control signal passes to described relay；
Described relay is for accepting the first control signal from described PLC, and the second control that will produce
Signal passes to described converter；
Described converter is for accepting the second control signal from described relay, and regulates and controls the work of described cooling module
Make.
Photovoltaic inverter system waterborne the most as claimed in claim 3, it is characterised in that described functional module also includes transmitter
It is arranged at described current transformer and described PLC control with analog acquisition module, wherein said transmitter and analog acquisition module
Between device processed；
Wherein, described transmitter is for passing to described analog acquisition mould by the monitoring signal from described current transformer
Block；
And described analog acquisition module is for being transferred to described PLC by the monitoring gathered signal.
Photovoltaic inverter system waterborne the most as claimed in claim 4, it is characterised in that described functional module is additionally provided with for depositing
Storage is from analog acquisition module and the computer of the information of PLC, and described computer is defeated with described analog acquisition module
Go out end to be connected with the outfan of PLC.
Photovoltaic inverter system waterborne the most as claimed in claim 3, it is characterised in that the current transformer of described functional module
It is arranged at the ac cable port of export of described photovoltaic DC-to-AC converter.
Photovoltaic inverter system waterborne the most as claimed in claim 1, it is characterised in that described cooling module includes circulating water pipe
Road and be arranged at the circulating water pump device in described circulating water pipeline.
Photovoltaic inverter system waterborne the most as claimed in claim 7, it is characterised in that described circulating water pipeline includes rising
Water cooling tube, intermediate temperature drop water cooling tube and decline water cooling tube, wherein said intermediate temperature drop water cooling tube and described inversion unit
And/or described wave filter carries out heat exchange.
Photovoltaic inverter system waterborne the most as claimed in claim 8, it is characterised in that described intermediate temperature drop water cooling tube is set
Inside photovoltaic DC-to-AC converter, it is arranged in after inverter cabinet and DC cabinet, and near selected from the heating element of lower group: inverter bridge
Frame, wave filter or a combination thereof.
Photovoltaic inverter system waterborne the most as claimed in claim 8, it is characterised in that the intermediate temperature drop of described cooling module
Water cooling tube is screw type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620883676.4U CN205883078U (en) | 2016-08-15 | 2016-08-15 | Photovoltaic inverter system on water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620883676.4U CN205883078U (en) | 2016-08-15 | 2016-08-15 | Photovoltaic inverter system on water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205883078U true CN205883078U (en) | 2017-01-11 |
Family
ID=57703291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620883676.4U Active CN205883078U (en) | 2016-08-15 | 2016-08-15 | Photovoltaic inverter system on water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710412A (en) * | 2018-05-18 | 2018-10-26 | 苏州洋紫瑞信息科技有限公司 | A kind of computer cabinet with efficient cooling and dedusting function |
-
2016
- 2016-08-15 CN CN201620883676.4U patent/CN205883078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710412A (en) * | 2018-05-18 | 2018-10-26 | 苏州洋紫瑞信息科技有限公司 | A kind of computer cabinet with efficient cooling and dedusting function |
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