CN209641189U - Photovoltaic power station access technology training device - Google Patents
Photovoltaic power station access technology training device Download PDFInfo
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- CN209641189U CN209641189U CN201822032302.3U CN201822032302U CN209641189U CN 209641189 U CN209641189 U CN 209641189U CN 201822032302 U CN201822032302 U CN 201822032302U CN 209641189 U CN209641189 U CN 209641189U
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Abstract
The utility model belongs to Power system tranining engineering device technique field, and in particular to photovoltaic power station access technology training device.It is simply insufficient for the big quantity space of insufficient or at high cost occupancy or function of existing photovoltaic power station access technology training method, the utility model adopts the following technical solution: photovoltaic power station access technology training device, it include: power supply and load system, for simulating power supply and customer charge；Grid-connected system, for simulating grid-connected and grid-connected two kinds grid-connected consumption modes of remaining sum in full；Electricity generation system, for simulating power generation；The power supply and load system, grid-connected system, electricity generation system, which are connected, forms power generation, a grid-connected, user load whole system.The beneficial effect of the photovoltaic power station access technology training device of the utility model is: there is device power generation, grid-connected, power supply and load side to simulate three parts, and student can be allowed to have whole understanding and understanding to entirely grid-connected.
Description
Technical field
The utility model belongs to Power system tranining engineering device technique field, and in particular to photovoltaic power station access technology
Training device.
Background technique
Solar energy power generating belongs to the renewable resource that country supports energetically, has apparent environmental protection and energy-saving effect.
With speeding for economic development, power demand is significantly increased, grid-connected that enterprise's offer electric power can not only be given to supplement, while
It can be reduced the consumption of local power grid, mitigate the pressure of local power grid.Using green energy resource, the work for saving traditional energy is also acted as
With promotion electric power enterprise image.Meanwhile because photovoltaic parallel in system access, the employee of electric power enterprise also proposed higher
Requirement.In order to improve service quality, the training of photovoltaic installation, maintenance, debugging is carried out to skilled addressee under power grid enterprises
And practical operation is of great significance.
Domestic many existing training devices generally use two ways to carry out real training, and one is built upon true photovoltaic system
On, another kind is the form using schematic diagram.
Establish true photovoltaic system mainly to have the disadvantage that: 1, cost is excessively high, installs the photovoltaic system of 1W, and cost price exists
8 yuan or so, if the photovoltaic parallel in system of one 3KVA of installation, needs 2.4 ten thousand yuan or so；2, photovoltaic panel installation occupies a large amount of empty
Between, the installation of photovoltaic panel is generally all mounted on outdoor roof, and photovoltaic panel is not that one piece of photovoltaic panel is just able to satisfy grid-connected demand, and
It is to need being applied in combination for muti-piece plank, is just able to satisfy grid-connected demand；3, grid-connected application formality is cumbersome, carries out if necessary grid-connected
It must apply to local power supply enterprise, be provided by power supply enterprise and receive scheme, scheme determination just can be carried out grid-connected installation and debugging, adjust
After the completion of examination, it is also necessary to which power supply enterprise carries out an acceptance inspection；4, installation period is longer, generally since apply to installation need 45 days left sides
The right side, and install and need 10 days or so, therefore the length that the development cycle compares；It 5, due to use is all true component, it is existing
Some failures can not be simulated in.
Using the form of schematic diagram mainly by following disadvantage: 1, student can only be allowed to rest on grid-connected understanding
Above theoretical；2, since the component of use is all component enclosure, components interior does not have true component, therefore, it is impossible to carry out
Be powered experiment；3, the solar irradiation at the scene of can not simulating, the thing that student acquires are not comprehensive enough.
Two kinds of real training modes all because of place or certain technical reasons, cannot reach the actual effect of anticipation.Therefore, it needs
The actual training device for developing a kind of simulation scene, for improving the level of skill of student, the post for reaching Almightiness type power supply station is needed
It asks.
Summary of the invention
The utility model is directed to the insufficient or at high cost occupancy of existing photovoltaic power station access technology training method
Big quantity space or function are simply insufficient, provide photovoltaic power station access technology training device, take into account cost and function
Energy.
To achieve the above objectives, the present invention adopts the following technical solutions: photovoltaic power station access technology training
Device, comprising:
Power supply and load system, for simulating power supply and customer charge；
Grid-connected system, for simulating grid-connected and grid-connected two kinds grid-connected consumption modes of remaining sum in full；
Electricity generation system, for simulating power generation；
The power supply and load system, grid-connected system, electricity generation system, which are connected, forms power generation, a grid-connected, user load
Whole system.
The photovoltaic power station access technology training device of the utility model, including power supply and load system, grid-connected system
System, electricity generation system, power supply and the power supply of load system main analog and customer charge, grid-connected system main analog are common in full simultaneously
Grid-connected two kinds grid-connected consumption modes of net and remaining sum, electricity generation system main analog power generation, it may include fluorescent lamp is according to simulation, inverter mould
Quasi-, power supply and load system, grid-connected system, electricity generation system are connected composition one power generation, grid-connected, user load whole system,
It can be common as network voltage is excessively high, network voltage is too low, inverter is anti-by computer installation scene in whole system
The common failure in the scene such as isolated island disabler, photovoltaic module local electric leakage；Device is divided into power generation, grid-connected, power supply and load
Side form intends three parts, allows student to the entire grid-connected understanding and understanding for having entirety；Photovoltaic parallel in system is divided into negative
Lotus and power supply system, grid-connected system, electricity generation system three parts are clear that composition, the property right boundary of each system
Point keeps student apparent, faster grasps the composition of grid-connected system, and working principle is checked and accepted points for attention, guarantee personnel and set
Standby safe operation.
As an improvement, further including the grid-connected wiring system for simulating grid-connected mode installation wiring, various grid-connected sides are realized
The installation wiring real training of formula.
As an improvement, the training device includes cabinet body, the cabinet body includes opposite the first face and the second face, the confession
Electricity and load system, grid-connected system, electricity generation system are located at the first face of cabinet body, and the grid-connected wiring system is located at the second of cabinet body
Face.
As an improvement, the first face of the cabinet body is divided into the firstth area, the secondth area and third area, the power supply and load system
Positioned at the firstth area, the grid-connected system is located at the secondth area, and the electricity generation system is located at third area.
As an improvement, the power supply and load system include the total lock of public electric wire net inlet wire, it is public electric wire net electrification indicator light, complete
Volume network connection public electric wire net access terminal block, surplus access the double of public electric wire net access terminal block, power supply and load side on the net
Plug-in strip, false table tail, anti-backflow device are isolated before to the table of measurement meter, power supply and load side bidirectional measuring meter and accesses terminal
Row, grid-connected wiring selection terminal block of all using by oneself, surplus grid-connected wiring selection terminal block, customer charge connecting terminal block, user
Load indicator light, customer charge side three-phase be spaced apart, three-phase electric leakage in customer charge side is spaced apart, disconnecting switch outlet grounding point before table,
Ground terminal.
As an improvement, the grid-connected system includes isolation knife before fully surfing the Internet bidirectional measuring meter, online meter table in full
Disconnecting fuse, online circuit three-phase electric leakage in full after lock, three-phase inverter output terminal, false table tail, online loop table in full
Protector, the grid-connected special switch in online circuit in full, online circuit Surge Protector in full, online circuit three-phase in full be spaced apart,
Isolation switch before unidirectional measurement meter that surplus online uses, the table that uses of surplus online circuit, three-phase inverter output terminal,
Disconnecting fuse, surplus online circuit three-phase electric leakage protector, surplus online circuit are grid-connected after false table tail, surplus online loop table
Special switch, surplus online circuit Surge Protector, surplus online circuit three-phase be spaced apart, disconnecting switch outlet grounding point before table,
Ground terminal.
As an improvement, the electricity generation system includes that solar energy photovoltaic panel, fluorescent light bracket, light-control knob, three-phase simulation are inverse
Become device, photovoltaic voltage measurement point, increases component key, reduces component key, inverter output voltage instruction, inverter output electricity
Stream instruction；The three-phase simulation inverter has display screen.By adjusting the brightness of fluorescent lamp, to simulate different time sections, too
Influence of the sunlight to photovoltaic panel can be observed by DC voltage connecting terminal, student is allowed to have the working principle of photovoltaic panel
Understood.By increase photovoltaic module, with reduce photovoltaic module button, for realize the photovoltaic board group string in scene simulate, when
It when pressing increase photovoltaic module, represents photovoltaic module and accesses one group again, when pressing reduction component key, represent photovoltaic module
Remove one group.
As an improvement, the electricity generation system further includes the universal bull stick for adjusting fluorescent lamp crevice projection angle.By universal
Bull stick can project the angle of photovoltaic panel, to change fluorescent lamp for simulating different time sections, the different illumination angles of the sun
Degree, the influence to photovoltaic panel.
As an improvement, further including the computer with inverter communication connection.By the communication between liquid crystal display and computer,
To realize the various warning messages and power generation information of virtual inverter.When fault of converter will be arranged in computer, computer is logical
It crosses Ethernet and sends display content to liquid crystal display, liquid crystal is shown according to the content received.
As an improvement, the grid-connected wiring system include total lock, public electric wire net connecting terminal, user load connecting terminal,
Inverter output wiring terminal.
The beneficial effect of the photovoltaic power station access technology training device of the utility model is: device have power generation,
Grid-connected, power supply and load side simulate three parts, and student can be allowed to the entire grid-connected understanding and understanding for having entirety.Into
One step, virtual inverter is used, the failure being much less prone in scene, such as inverter anti-islanding function can be simulated
Can fail etc.；Simulate the increase of live muti-piece photovoltaic using photovoltaic panel and button or delete, save a large amount of cost and
Mounting cost；It, can be with the exposure intensity of simulated solar irradiation, photograph using fluorescent lamp and universal lamp stand come the operating condition of simulated solar
Firing angle degree etc.；Grid-connected photovoltaic system exception and troubleshooting can be simulated；Provided with parallel network power generation test, debugging and
The functional modules such as O&M can allow student to understand the work such as the debugging of distributed photovoltaic project, examination and operation and maintenance；Can carry out
The simulation of parallel network power generation scene maintenance work, main operational inspection, power supply volume (generated energy) including photovoltaic apparatus are made a copy of, are electric
The monitoring of gas index parameter, equipment state operation monitoring real training；Package unit can not only carry out O&M maintenance to grid-connected system,
Simultaneously can also practice wiring be carried out to different grid-connected modes.
Detailed description of the invention
Fig. 1 is the layout in the first face of the cabinet body of the training device of the utility model embodiment.
Fig. 2 is the layout in firstth area in the first face of the cabinet body of the training device of the utility model embodiment.
Fig. 3 is the layout in secondth area in the first face of the cabinet body of the training device of the utility model embodiment.
Fig. 4 is the layout in the third area in the first face of the cabinet body of the training device of the utility model embodiment.
Fig. 5 is the layout in the second face of the cabinet body of the training device of the utility model embodiment.
Fig. 6 and Fig. 7 is the anti-isolated island crash simulation electrical schematic diagram of inverter of the training device of the utility model embodiment.
Fig. 8 and Fig. 9 is grid-connected dedicated control principle drawing when being spaced apart failure of the training device of the utility model embodiment.
Figure 10 is the Surge Protector working principle diagram of the training device of the utility model embodiment.
Figure 11 to Figure 13 is the load switching analogue technique schematic diagram of the training device of the utility model embodiment.
In figure, 1 representative is the total lock of public electric wire net inlet wire, the total lock of network access at the scene of simulating；
2 representatives are public electric wire net electrification indicator lights, and when public electric wire net has electricity, which can be lighted；
The 3 network connection public electric wire nets in full represented access terminal block；
4 representatives are that surplus accesses public electric wire net access terminal block on the net；
5 represent be power supply and load side bidirectional measuring meter；
6 represent be power supply and load side bidirectional measuring meter table before plug-in strip is isolated；
7 representatives are to simulate false table tail, for realizing the reversed failure of inlet-outlet line of bidirectional measuring meter；
8 representatives are anti-backflow device access terminal blocks；
9 representatives are grid-connected wiring selection terminal blocks of all using by oneself；
10 representatives are the grid-connected wiring selection terminal blocks of surplus；
11 representatives are customer charge connecting terminal blocks；
12 representatives are customer charge indicator lights；
13 representatives are that customer charge side three-phase is spaced apart；
14 representatives are that three-phase electric leakage in customer charge side is spaced apart；
15 representatives are the bidirectional measuring meters used of fully surfing the Internet；
16 isolation switch before being online meter table in full represented；
17 representatives are three-phase inverter output terminals；
18 representatives are to simulate false table tail, for realizing the reversed failure of inlet-outlet line of bidirectional measuring meter；
19 disconnecting fuses after being online loop table in full represented；
20 representatives are online circuit three-phase electric leakage protectors in full；
21 representatives are the online grid-connected special switch in circuit in full；
22 representatives are online circuit Surge Protectors in full；
23 representatives are that online circuit three-phase in full is spaced apart；
24 represent is that surplus is surfed the Internet the unidirectional measurement meter that uses；
25 isolation switch before being the table that surplus online circuit uses represented；
26 representatives are three-phase inverter output terminals；
27 representatives are to simulate false table tail, for realizing the reversed failure of inlet-outlet line of bidirectional measuring meter；
28 disconnecting fuses after being surplus online loop table represented；
29 representatives are surplus online circuit three-phase electric leakage protectors；
30 representatives are the surplus online grid-connected special switch in circuit；
31 representatives are surplus online circuit Surge Protectors；
32 representatives are that surplus online circuit three-phase is spaced apart；
33 representatives are solar energy photovoltaic panels；
34 representatives are fluorescent light brackets, are used for simulated solar irradiation；
35 representatives are light-control knobs；
36 representatives are three-phase simulation inverters；
37 representatives are photovoltaic voltage measurement points；
38 representatives are to increase component key；
39 representatives are to reduce component key；
40 representatives are inverter output voltage instructions；
41 representatives are inverter output current instructions；
The 42 disconnecting switch outlet grounding points before being table represented；
43 representatives are ground terminals；
The 44 disconnecting switch outlet grounding points before being table represented；
45 representatives are ground terminals；
The 46 disconnecting switch outlet grounding points before being table represented；
47 representatives are ground terminals；
48 representatives are total locks；
49 representatives are public electric wire net connecting terminals；
50 representatives are user load connecting terminals；
51 representatives are inverter output wiring terminals.
Specific embodiment
The attached drawing that embodiment one is created below with reference to the utility model creates the technical side of embodiment one to the utility model
Case is explained and illustrated, but following embodiments one are only the preferred embodiment one that the utility model is created, and not all.It is based on
Embodiment one in embodiment, those skilled in the art's other realities obtained without making creative work
Example one is applied, the protection scope of the utility model creation is belonged to.
Referring to Fig. 1 to Figure 13, the photovoltaic power station access technology training device of the utility model, comprising:
Power supply and load system, for simulating power supply and customer charge；
Grid-connected system, for simulating grid-connected and grid-connected two kinds grid-connected consumption modes of remaining sum in full；
Electricity generation system, for simulating power generation；
The power supply and load system, grid-connected system, electricity generation system, which are connected, forms power generation, a grid-connected, user load
Whole system.
The photovoltaic power station access technology training device of the utility model, including power supply and load system, grid-connected system
System, electricity generation system, power supply and the power supply of load system main analog and customer charge, grid-connected system main analog are common in full simultaneously
Grid-connected two kinds grid-connected consumption modes of net and remaining sum, electricity generation system main analog power generation, it may include fluorescent lamp is according to simulation, inverter mould
Quasi-, power supply and load system, grid-connected system, electricity generation system are connected composition one power generation, grid-connected, user load whole system,
It can be common as network voltage is excessively high, network voltage is too low, inverter is anti-by computer installation scene in whole system
The common failure in the scene such as isolated island disabler, photovoltaic module local electric leakage；Device is divided into power generation, grid-connected, power supply and load
Side form intends three parts, allows student to the entire grid-connected understanding and understanding for having entirety；Photovoltaic parallel in system is divided into negative
Lotus and power supply system, grid-connected system, electricity generation system three parts are clear that composition, the property right boundary of each system
Point keeps student apparent, faster grasps the composition of grid-connected system, and working principle is checked and accepted points for attention, guarantee personnel and set
Standby safe operation.
Embodiment one
Referring to Fig. 1 to Figure 13, the photovoltaic power station access technology training device of the utility model embodiment one, packet
It includes:
Power supply and load system, for simulating power supply and customer charge；
Grid-connected system, for simulating grid-connected and grid-connected two kinds grid-connected consumption modes of remaining sum in full；
Electricity generation system, for simulating power generation；
The power supply and load system, grid-connected system, electricity generation system, which are connected, forms power generation, a grid-connected, user load
Whole system.
Referring to Fig. 1 to Fig. 4, as an improvement, further include the grid-connected wiring system for simulating grid-connected mode installation wiring, it is real
The installation wiring real training of existing various grid-connected modes.
As an improvement, the training device includes cabinet body, the cabinet body includes opposite the first face and the second face, the confession
Electricity and load system, grid-connected system, electricity generation system are located at the first face of cabinet body, and the grid-connected wiring system is located at the second of cabinet body
Face.
As an improvement, the first face of the cabinet body is divided into the firstth area, the secondth area and third area, the power supply and load system
Positioned at the firstth area, the grid-connected system is located at the secondth area, and the electricity generation system is located at third area.
As an improvement, it is described power supply and load system include the total lock 1 of public electric wire net inlet wire, public electric wire net electrification indicator light 2,
Network connection public electric wire net in full accesses terminal block 3, surplus accesses public electric wire net access terminal block 4, power supply and load side on the net
Bidirectional measuring meter 5, power supply and load side bidirectional measuring meter table before plug-in strip 6, false table tail 7, anti-backflow device be isolated connect
Enter terminal block 8, grid-connected wiring selection terminal block 9 of all using by oneself, surplus grid-connected wiring selection terminal block 10, customer charge terminals
Son row 11, customer charge indicator light 12, customer charge side three-phase be spaced apart the electric leakage of 13, customer charge side three-phase be spaced apart before 14, table every
It leaves and closes outlet grounding point 42, ground terminal 43.
As an improvement, the grid-connected system includes being isolated before fully surfing the Internet bidirectional measuring meter 15, online meter table in full
Disconnecting fuse 19 after disconnecting link 16, three-phase inverter output terminal 17, false table tail 18, online loop table in full is fully surfed the Internet back
Road three-phase electric leakage protector 20, the grid-connected special switch 21 in online circuit in full, online circuit Surge Protector 22 in full, it is in full on
Net circuit three-phase is spaced apart isolation switch before the unidirectional measurement meter 24 that the online of 23, surplus uses, the table that uses of surplus online circuit
25, disconnecting fuse 28, surplus online circuit three after three-phase inverter output terminal 26, false table tail 27, surplus online loop table
Phase earth leakage protective device 29, the grid-connected special switch 30 in surplus online circuit, surplus online circuit Surge Protector 31, surplus are surfed the Internet back
Road three-phase is spaced apart disconnecting switch outlet grounding point 44, ground terminal 45 before 32, table.
As an improvement, the electricity generation system includes solar energy photovoltaic panel 33, fluorescent light bracket 34, light-control knob 35, three-phase
Emulation inverter 36, photovoltaic voltage measurement point 37, increase component key 38, reduction component key 39, inverter output voltage refer to
Show 40, inverter output current instruction 41；The three-phase simulation inverter 36 has display screen.
The brightness of fluorescent lamp is adjusted by light-control knob 35, to simulate influence of the different time sections sunlight to photovoltaic panel,
It can be observed by DC voltage connecting terminal, student is allowed to have gained some understanding the working principle of photovoltaic panel.By increasing component
Key 38 and reduction component key 39, for realizing that the photovoltaic board group string in scene is simulated, when pressing reduction component key 39,
It represents photovoltaic module and accesses one group again, when pressing reduction component key 39, represent photovoltaic module and remove one group.
As an improvement, the electricity generation system further includes the universal bull stick for adjusting fluorescent lamp crevice projection angle.By universal
Bull stick can project the angle of photovoltaic panel, to change fluorescent lamp for simulating the different irradiating angles of the different time sections sun
Influence to photovoltaic panel.
As an improvement, further including the computer communicated to connect with three-phase simulation inverter 36.Pass through liquid crystal display and computer
Between communication, come realize virtual inverter various warning messages and power generation information.When fault of converter will be arranged in computer
When, computer sends display content to liquid crystal display by Ethernet, and liquid crystal is shown according to the content received.
Referring to Fig. 6 and Fig. 7, three-phase simulation inverter 36 works in the normal situation of network voltage, with the fully side of online
Formula explanation, in the case where being not provided with failure, three phase mains is aobvious by KM2, KM7, Zong Zha (QF1) to grounding switch, electrification
Show, be spaced apart (QF2) after isolation plug-in strip, two-way ammeter, table before table, automatic reclosing is spaced apart (QF3), Surge Protector (QF4), three
Mutually electric leakage is spaced apart (QF5), three-phase is commonly spaced apart (QF6), and as QF1, QF2, all in closed state, and virtual load power supply rises electricity
After pressure, QF3 meeting automatic closing, under closed form body, public electric wire net indicator light is bright by QF5, QF6, inverter output voltage monitor
Three-phase output voltage is shown on table.
The anti-isolated island function of inverter is normally simulated: when disconnecting the power-off of QF1 simulating grid, automatic reclosing is spaced apart on QF3
End is because being not detected voltage, so meeting automatic trip, no-voltage is indicated on inverter output voltage supervisory instrument after tripping.Inversion
The anti-isolated island disabler simulation of device: when isolated island disabler failure anti-by computer installation inverter, computer control event
The K1 relay for hindering simulator is attracted, and after K1 is attracted, control KM2 line band electricity, KM2 disconnects the power supply being connected on QF1 after being attracted,
It is switched to inverter output access side QF6-1, in order to avoid automatic reclosing is spaced apart QF3 in the case where no tripping, inversion
The voltage of device output, which just passes through automatic reclosing and is spaced apart lower end, is linked into automatic reclosing upper end for voltage, causes automatic reclosing
The phenomenon that not tripping, after KM2 actuation, the length of KM2 prescribes one time relay of access, utilizes the delay of time relay KT
Turn-on power loss connects KM3, allows KM3 to access QF6-1, has voltage output on the output voltage supervisory instrument of inverter at this time, automatically
Reclosing is spaced apart QF3 so that for the power-off of the alternating current of upper end, so meeting automatic trip, reaches alternating current power-off, automatic reclosing is spaced apart jump
Lock, virtual inverter have voltage output.
Referring to Fig. 8 and Fig. 9, when dedicated being spaced apart failure, the K2 suction of software control fault simulator using software setting is grid-connected
It closes, after K2 is attracted, KM4 is attracted, and the grid-connected dedicated upper and lower ends being spaced apart are shorted by KM4 after being attracted, when setting inverter function is lost
Effect, it is grid-connected it is dedicated be spaced apart failure after, virtual load power supply will by inverter by voltage access power grid indicator light, it is inverse for simulating
Become device failure with it is grid-connected it is dedicated be spaced apart failure simultaneously after, contravarianter voltage can be transported to public electric wire net, when personnel overhaul, although
It is disconnected total lock QF1 of public electric wire net, but still has voltage in power grid and is likely to result in personnel casualty accidents, so as to cause
The attention of student.
Referring to Figure 10, the simulation of Surge Protector ground fault.Surge Protector working principle diagram is as shown in Figure 10: working as calculating
When leak current fault is arranged in machine, computer controls relay K3, K4, K5 by fault simulator, and A relative discharge, B phase is respectively set
Leaked Current of Line to Ground, C relatively leak electricity, and after setting up electric leakage, electric leakage, which is spaced apart QF5, to trip because detected leakage current, thus
Guarantee the safety of equipment.
Referring to Figure 11 to Figure 13, for the customer charge at the scene of preferably simulating, load current is provided on device and is monitored
Instrument, when load switch closes, load current supervisory instrument monitors load current, when load switch disconnects, bears
Carrying electric current is 0；Simultaneously because surplus online is when load switch disconnects, and it is the equal of fully surfing the Internet, it is two-way in order to demonstrate
Measurement meter disconnects the operation conditions that load is spaced apart when surplus is surfed the Internet, therefore is spaced apart using certain technological means to load
Carry out real-time monitoring.
Load switching analogue technique schematic diagram is as shown in figure 11.After load, which is spaced apart, closes, time relay KT obtains electric, KT
It is electric after be delayed a period of time, KM6 is attracted, electric current by current surveillance instrument to three phase metering meter, then from measurement meter time
To electric current low side, at this point, three phase metering meter has electric current, three current surveillance instrument also have electric current simultaneously, represent active user
Load is spaced apart in "on" position；When customer charge, which is spaced apart, to be in an off state, KM6 is not attracted, and the high-end of electric current passes through KM6
Normally closed point be directly attached with electric current low side, at this point, current surveillance instrument and user's measurement meter do not have electric current, be used for mould
The quasi- non-loaded situation of user；Because the voltage of inverter output will be slightly higher than line voltage, remaining when user side is zero load
Amount online then will become network access in full, because fully online is different from the mode of connection that surplus is surfed the Internet, it is therefore desirable to utilize
Computer come be arranged surplus online bidirectional measuring meter current trend.
COMPUTER DETECTION principle is as shown in figure 13.When being spaced apart disconnection, KM6 is disconnected, and utilizes the normally closed point of KM6 by event at this time
Barrier simulation box test side be grounded, after fault simulator detects ground signalling, be uploaded to COMPUTER DETECTION automatically as a result,
If it is low level, the bidirectional measuring meter setting electric current that computer if controls surplus online is reversely connected failure, is reversely connected by electric current
Surplus grid-connected mode is modeled to grid-connected mode in full by failure.
Referring to Fig. 5, as an improvement, the grid-connected wiring system includes that total lock, public electric wire net connecting terminal, user load connect
Line terminals, inverter output wiring terminal.The second face of cabinet body mainly uses the form of mesh plate, for realizing various grid-connected modes
Installation wiring real training.
The beneficial effect of the photovoltaic power station access technology training device of the utility model embodiment one is: device tool
There is power generation, grid-connected, power supply and load side to simulate three parts, can allow student to it is entire it is grid-connected have whole understanding with
Understand；It is equipped with virtual inverter, the failure being much less prone in scene, such as inverter anti-islanding function can be simulated
Failure etc.；The increase of live muti-piece photovoltaic is simulated using photovoltaic panel and button or is deleted, and a large amount of cost and peace are saved
Dress expense；It, can be with the exposure intensity of simulated solar irradiation, irradiation using fluorescent lamp and universal lamp stand come the operating condition of simulated solar
Angle etc.；Grid-connected photovoltaic system exception and troubleshooting can be simulated；Provided with parallel network power generation test, debugging and fortune
The functional modules such as dimension can allow student to understand the work such as the debugging of distributed photovoltaic project, examination and operation and maintenance；It can carry out light
Photovoltaic grid-connected scene maintenance work simulation, main operational inspection, power supply volume (generated energy) including photovoltaic apparatus are made a copy of, electrically
The monitoring of index parameter, equipment state operation monitoring real training；Package unit can not only carry out O&M maintenance to grid-connected system, together
When can also carry out practice wiring to different grid-connected modes.
The specific embodiment that the above, only the utility model are created, but the protection scope that the utility model is created
It is not limited thereto, is familiar with the those skilled in the art to should be understood that the utility model is created including but is not limited to attached drawing and upper
Content described in mask body embodiment.The modification of any function and structure principle created without departing from the utility model all will
Including within the scope of the appended claims.
Claims (10)
1. photovoltaic power station access technology training device, it is characterised in that: include:
Power supply and load system, for simulating power supply and customer charge；
Grid-connected system, for simulating grid-connected and grid-connected two kinds grid-connected consumption modes of remaining sum in full；
Electricity generation system, for simulating power generation；
It is described power supply and load system, grid-connected system, electricity generation system be connected composition one power generation, grid-connected, user load is a whole set of
System.
2. photovoltaic power station access technology training device according to claim 1, it is characterised in that: further include being used for
Simulate the grid-connected wiring system of grid-connected mode installation wiring.
3. photovoltaic power station access technology training device according to claim 2, it is characterised in that: the training dress
It sets including cabinet body, the cabinet body includes opposite the first face and the second face, the power supply and load system, grid-connected system, power generation
System is located at the first face of cabinet body, and the grid-connected wiring system is located at the second face of cabinet body.
4. photovoltaic power station access technology training device according to claim 3, it is characterised in that: the cabinet body
First face is divided into the firstth area, the secondth area and third area, and the power supply and load system are located at the firstth area, and the grid-connected system is located at
Secondth area, the electricity generation system are located at third area.
5. photovoltaic power station access technology training device according to claim 1, it is characterised in that: it is described power supply and
Load system includes the total lock of public electric wire net inlet wire, public electric wire net electrification indicator light, network connection public electric wire net in full access terminal
Bidirectional measuring meter, power supply and the load side that row, surplus access public electric wire net access terminal block, power supply and load side on the net are two-way
Plug-in strip, false table tail, anti-backflow device access terminal block, grid-connected wiring selection terminal of all using by oneself are isolated before the table of measurement meter
Row, the grid-connected wiring selection terminal block of surplus, customer charge connecting terminal block, customer charge indicator light, customer charge side three-phase are empty
It opens, three-phase electric leakage in customer charge side is spaced apart, disconnecting switch outlet grounding point, ground terminal before table.
6. photovoltaic power station access technology training device according to claim 1, it is characterised in that: the grid-connected system
System includes isolation switch, three-phase inverter output terminal, false table before fully surfing the Internet bidirectional measuring meter, online meter table in full
Disconnecting fuse, online circuit three-phase electric leakage protector in full, online circuit in full are grid-connected dedicated after tail, online loop table in full
Switch, online circuit Surge Protector in full, online circuit three-phase in full be spaced apart, the unidirectional measurement meter that surplus online uses,
It is isolated after isolation switch, three-phase inverter output terminal, false table tail, surplus online loop table before the table that surplus online circuit uses
Fuse, surplus online circuit three-phase electric leakage protector, the grid-connected special switch in surplus online circuit, surplus online circuit surge are protected
Protect device, surplus online circuit three-phase is spaced apart, disconnecting switch outlet grounding point, ground terminal before table.
7. photovoltaic power station access technology training device according to claim 1, it is characterised in that: the power generation system
System includes solar energy photovoltaic panel, fluorescent light bracket, light-control knob, three-phase simulation inverter, photovoltaic voltage measurement point, increases and set up
Key reduces and sets up key, inverter output voltage instruction, inverter output current instruction；The three-phase simulation inversion utensil
There is display screen.
8. photovoltaic power station access technology training device according to claim 7, it is characterised in that: the power generation system
System further includes the universal bull stick for adjusting fluorescent lamp crevice projection angle.
9. photovoltaic power station access technology training device according to claim 7, it is characterised in that: further include with it is inverse
Become the computer of device communication connection.
10. photovoltaic power station access technology training device according to claim 2, it is characterised in that: described grid-connected
Wiring system includes total lock, public electric wire net connecting terminal, user load connecting terminal, inverter output wiring terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822032302.3U CN209641189U (en) | 2018-12-05 | 2018-12-05 | Photovoltaic power station access technology training device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822032302.3U CN209641189U (en) | 2018-12-05 | 2018-12-05 | Photovoltaic power station access technology training device |
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| CN209641189U true CN209641189U (en) | 2019-11-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599016A (en) * | 2018-12-05 | 2019-04-09 | 国网浙江省电力有限公司培训中心 | Photovoltaic power station access technology training device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599016A (en) * | 2018-12-05 | 2019-04-09 | 国网浙江省电力有限公司培训中心 | Photovoltaic power station access technology training device |
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