CN208316308U - The grid-connected booster stations system of integrated photovoltaic - Google Patents
The grid-connected booster stations system of integrated photovoltaic Download PDFInfo
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- CN208316308U CN208316308U CN201820666801.5U CN201820666801U CN208316308U CN 208316308 U CN208316308 U CN 208316308U CN 201820666801 U CN201820666801 U CN 201820666801U CN 208316308 U CN208316308 U CN 208316308U
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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 kind of grid-connected booster stations system of integrated photovoltaic, including low-pressure system, booster system, high pressure grid-connected system and access system, low-pressure system, booster system, high pressure grid-connected system are integrally disposed in prefabricated box body；Low-pressure system includes low pressure inlet wire part; low pressure inlet wire part is equipped with total low-voltage frame circuit breaker; booster system includes step-up transformer; high pressure grid-connected system includes high-voltage electric-energy meter, high voltage isolator, high-voltage circuitbreaker, high-tension current inductor, high voltage potential transformer and grid-connected interface protector, and access system includes pole-mounted circuit breaker；Total low-voltage frame circuit breaker is connected on the low pressure enter line side of transformer, and the high-voltage terminal side of step-up transformer is connected by copper bus-bar with high pressure grid-connected system, and high pressure grid-connected system is connect through cable run with pole-mounted circuit breaker, and pole-mounted circuit breaker accesses public electric wire net.The utility model makes that 10kV photovoltaic power station is safe and reliable, is economically incorporated to local public electric wire net.
Description
Technical field
It is specifically a kind of by solar photovoltaic generation system, liter the utility model relates to photovoltaic power generation grid-connecting technical field
The grid-connected booster stations system of the integrated photovoltaic that pressure system, grid-connected system, electric energy metering system, communication system are integrated in one.
Background technique
Currently, traditional distributed photovoltaic surface power station (10 kilovolts and the access of following voltage class, and single grid entry point is total
Installed capacity is no more than 6 megawatts of distributed generation resource) generally consist of the following components, photovoltaic module, inverter, box liter
The part such as pressure transformer, switchyard electrical primary, switchyard electric secondary, grid integration forms, and typical design is permanent to be occupied
Ground area is larger, and equipment is also more, and independent protection device is also more, such as the photovoltaic surface power station of 1 1.0MW, until
Rare 1 box step-up transformer, 1 switchyard, switchyard are divided into a high-tension distribution chamber of converting and secondary chamber, a high voltage power distribution
Room configures 4 switchgears (incoming line switch cabinet, three-phase PT cabinet, metering cabinet, grid-connected outgoing line cabinet), configures relay protection in secondary chamber
Cabinet, communication cabinet, ups power cabinet.For the grid-connected of 10kV small distributed photovoltaic plant, on the one hand to guarantee grid-connected peace
Quan Xing, while also to guarantee that the economy of grid-connection device becomes this invention problem in urgent need to solve.
Summary of the invention
In view of the drawbacks of the prior art, the utility model provides a kind of grid-connected booster stations system of integrated photovoltaic, makes 10kV points
Cloth photovoltaic plant is safe and reliable, is economically incorporated to local public electric wire net.
In order to solve the technical problem, the technical solution adopted in the utility model is: a kind of grid-connected boosting of integrated photovoltaic
It stands system, including low-pressure system, booster system, high pressure grid-connected system and access system, low-pressure system, booster system, high pressure are simultaneously
The net system integration is set in prefabricated box body；Low-pressure system includes low pressure inlet wire part and station power unit, low pressure inlet wire portion
Divide and be equipped with total low-voltage frame circuit breaker, booster system includes step-up transformer, and high pressure grid-connected system includes high-voltage electric energy measurement
Device, high voltage isolator, high-voltage circuitbreaker, high-tension current inductor, high voltage potential transformer and grid-connected interface protector,
Access system includes pole-mounted circuit breaker；Total low-voltage frame circuit breaker is connected on the low pressure enter line side of transformer, step-up transformer
High-voltage terminal side is connected by copper bus-bar with high pressure grid-connected system, and high pressure grid-connected system connects through cable run and pole-mounted circuit breaker
It connects, pole-mounted circuit breaker accesses public electric wire net.
Further, prepackage cabinet includes low-pressure chamber, booster chamber and hyperbaric chamber, and low-pressure system, booster system and high pressure are simultaneously
Net system is respectively arranged in low-pressure chamber, booster chamber and hyperbaric chamber, and divider wall is equipped between low-pressure chamber, booster chamber and hyperbaric chamber.
Further, the divider wall uses stainless steel or ferrous material.
Further, low-pressure system further includes low-voltage current mutual inductor and low pressure Surge Protector, low-voltage current mutual inductor
The low-pressure side of step-up transformer is mounted on total low-voltage frame circuit breaker, low pressure Surge Protector is connected to the low of step-up transformer
It presses on the copper bus-bar of side.
Further, high-voltage electric-energy meter includes metered voltage mutual inductor, metering current mulual inductor and electric energy meter, meter
Amount voltage transformer, metering current mulual inductor and electric energy meter are mounted on the high-voltage terminal side of step-up transformer, step-up transformer
High-pressure side is connected to the high voltage isolator of high pressure grid-connected system by copper bus-bar.
Further, high pressure grid-connected system further includes Zinc-Oxide Arrester and zero sequence current mutual inductor, high voltage isolator,
High-voltage circuitbreaker is chained together, and voltage transformer, current transformer, Zinc-Oxide Arrester are connected to the power grid of high-voltage circuitbreaker
Side copper bus-bar side, zero sequence current mutual inductor are mounted on to the cable outlet of pole-mounted circuit breaker.
It further, further include communication system, communication system includes line feed terminals, electric flux terminal unit and distribution intelligence
Terminal, line feed terminals are connected with pole-mounted circuit breaker, acquire grid integration point operation information, by GPRS wireless transmission in a manner of on
Power supply company's monitoring center is reached, electric flux terminal unit is connected with high-voltage electric-energy meter, and acquisition energy measurement information is simultaneously
The electric energy measurement center of power supply department is uploaded in such a way that GPRS is wirelessly transferred；Intelligent distribution terminal and grid-connected interface protection
Device, step-up transformer, inverter are connected, for acquiring power station operation information and uploading in such a way that GPRS is wirelessly transferred
To user's centralized-control center.
The utility model has the beneficial effects that 1, the utility model integrates low-pressure system, booster system, high pressure grid-connected system
In prefabricated box body, the high-voltage terminal part of transformer has synthesized one with the electrical primary cabinet of switchyard, i.e. transformer goes out
Line is directly entered high-voltage electrical energy metering system, carry out after metering it is grid-connected, cabinet body use ring network cabinet body.The utility model is by one
A power station has been integrated in a prefabricated box body, and permanent occupied area is smaller, and integral installation is convenient, saves controller switching equipment,
Reduce intermediate link.2, grid-connected interface protector is used, route protection, the protection of low-frequency and low-voltage off-the-line, anti-isolated island are protected
The protective device that shield etc. needs when being incorporated to public electric wire net is integrated.Grid connection interface device not only fills the protection of grid requirements
It sets and is integrated, be also equipped with the functions such as electric energy quality real-time monitoring function, time adjustment function, data communication, since simultaneously network interface fills
The use set, has greatly saved occupied area, reduces costs, and improves the safety and stability of photovoltaic plant.3, lead to
Letter information transmitting uses wireless transmission method.In general, distributed low profile photovoltaic surface power station project, especially small-sized distribution
Formula poverty alleviation surface power station is mostly built using idle lands resources such as poor village deserted mountain abundant, barren hill, beach, and site is attached
Nearly typically no optical cable does not have the information that photovoltaic power station is transmitted in such a way that optical cable carries out private network.Distributed integeration
Grid-connected booster stations system communication information uses wireless transmission method, and grid-connected long journey information is acquired by line feed terminals (FTU)
And power supply department monitoring center is wirelessly transmitted to by GPRS, power station operation information is acquired by automatization terminal (DTU),
User monitoring or scheduling station are wirelessly transmitted to by GPRS.
Detailed description of the invention
Fig. 1 is the floor plan of the utility model；
Fig. 2 is the primary circuit schematic diagram of the utility model；
Fig. 3 is the electric telecommunication systems figure of the utility model, and 3a is the logical of pole-mounted circuit breaker and power supply company's monitoring center
Believe that system diagram, 3b are the communication system figure of metering system and electric energy measurement center, 3c is inverter and user's centralized-control center
Communication system figure；
Fig. 4 is the monnolithic case figure of the utility model, and 4a is the schematic view of the front view of the utility model, and 4b is that this is practical
Novel left view structural representation；
In figure: A, low-pressure system, B, booster system, C, high pressure grid-connected system, D, access system, 1, prepackage cabinet, 2, low
Pressure chamber, 3, booster chamber, 4, hyperbaric chamber, 5, photovoltaic module, 6, low-voltage current mutual inductor, 7, total low-voltage frame circuit breaker, 8, use of standing
Transformer, 9, low pressure Surge Protector, 10, step-up transformer, 11, metering current mulual inductor and electric energy meter, 12, metered voltage it is mutual
Sensor, 13, copper bus-bar, 14, high voltage isolator, 15, high-voltage circuitbreaker, 16, measurement voltage transformer, 17, measurement and protection
Current transformer, 18, Zinc-Oxide Arrester, 19, grid-connected interface protector, 20, zero sequence current mutual inductor, 21, cable run,
22, pole-mounted circuit breaker, 23, grid integration point, 24, line feed terminals, 25, intelligent distribution terminal.
Specific embodiment
The utility model is further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of grid-connected booster stations system of integrated photovoltaic, including low-pressure system A, booster system B, high pressure are grid-connected
System C and access system D, low-pressure system A, booster system B, high pressure grid-connected system C are integrally disposed in prepackage cabinet 1；Photovoltaic
After the boosted system B boosting of the electricity that system issues, local public electric wire net is incorporated to through high pressure grid-connected system C and access system D.This reality
It applies in example, prepackage cabinet 1 includes low-pressure chamber 2, booster chamber 3 and hyperbaric chamber 4, low-pressure system A, booster system B and the grid-connected system of high pressure
System C is respectively arranged in low-pressure chamber 2, booster chamber 3 and hyperbaric chamber 4, and isolation is equipped between low-pressure chamber 2, booster chamber 3 and hyperbaric chamber 4
Wall.The divider wall uses stainless steel or irony low electrical resistant material.Divider wall is generated using electromagnetic wave on shielded conductor surface anti-
Penetrate and conductor generate absorb and multiple reflections and play shielding action, effectively prevent electromagnetic wave from a space to another
One spatial, avoids electromagnetic interference, keeps low-pressure system A, booster system B, high pressure grid-connected system C integrally disposed in prepackage cabinet
In 1.
As shown in Fig. 2, low-pressure system A includes low-voltage current mutual inductor 6, total low-voltage frame circuit breaker 7, low pressure surge protection
Device 9 and station local coordinate frame 8, booster system include transformer 10, and high pressure grid-connected system includes high pressure measurement current transformer and electricity
It can table 11, metered voltage mutual inductor 12, high voltage isolator 14, high-voltage circuitbreaker 15, measurement voltage transformer 16, measurement and guarantor
Protect current transformer 17, grid-connected interface protector 19, Zinc-Oxide Arrester 18 and zero sequence current mutual inductor 20, access system packet
Include pole-mounted circuit breaker (containing isolation switch) 22.
In the present embodiment, low-pressure system A is connected with photovoltaic generating system, and photovoltaic system includes N number of photovoltaic module 5, each
The inlet wire of photovoltaic module 5 is equipped with a breaker of plastic casing, and the electric energy that N number of photovoltaic module 5 acquires is collected to low-pressure system A, low pressure
Current transformer 6, total low-voltage frame circuit breaker 7 are mounted on the low pressure enter line side of transformer 10, and low pressure Surge Protector 8 is connected to
On the copper bus-bar of the low pressure enter line side of transformer 10.It stands and uses the UPS uninterruptible power supply of 2kVA with power supply, pass through station local coordinate frame
8 be all power supply for electrical equipment.High pressure measurement current transformer and electric energy meter 11, high pressure measurement voltage transformer 12 constitute high pressure
Electric energy metered system, current transformer and electric energy meter 11, high voltage potential transformer 12 are mounted on the high-voltage terminal side of transformer 10,
The high-pressure side of step-up transformer 10 is connected to high voltage isolator 14, high voltage isolator 14 and high pressure open circuit by copper bus-bar 13
Device 15 is cascaded, and measurement voltage transformer 16, measurement and protective current mutual inductor 17, Zinc-Oxide Arrester 18 are connected to height
The grid side copper bus-bar of voltage breaker 15, zero sequence current mutual inductor 20 are mounted on to the cable outlet of pole-mounted circuit breaker, cable
Route 21 is connected to pole-mounted circuit breaker 22, and pole-mounted circuit breaker 22 is connected to grid integration point 23, thus accesses public electric wire net.
When work, the sun is impinged upon on photovoltaic module 5, and photovoltaic module 5 absorbs the energy in sunlight, and solar energy is converted
For direct current energy, direct current becomes three-phase alternating current after inverter inversion, three-phase alternating current after the pooling to low-pressure system A,
The low-voltage three-phase AC electricity come from the conveying of photovoltaic place is sent into the low-pressure side of transformer 10 by low-pressure system A, and boosted system B will
Voltage is increased to 10kV, and the 10kV alternating current after boosting enters high pressure grid-connected system C, through high voltage isolator after high pressure measurement
14 and high-voltage circuitbreaker 15 be connected to the grid, then access public 10kV route through access system D.
Low-voltage current mutual inductor 6 in low-pressure system can detecte the electric current of low-pressure side, and total low-voltage frame circuit breaker 7 is to low
Crimping road is protected, and has the function of that instantaneous road, long delay protection and undervoltage tripping, shunted exciter tripping, inspection have pressure automatic closing
With the functions such as residual current protecting.The lightning protection of the progress low-pressure side of low pressure Surge Protector 8.
Step-up transformer 10 uses energy-saving SCB10-500kVA using the copper two-winding transformer of energy saving dry type, transformer
Etc. the transformer of various normal capacities, 10 winding coil material of step-up transformer uses anaerobic pure cu conductor, and silicon steel sheet is used and taken
To cold-reduced silicon sheet (Wuhan Iron and Steel Plant), and adopts an effective measure and avoid eddy current loss.Total low-voltage frame circuit breaker 7 is low to transformer 10
Side is pressed to connect using three-phase copper bar, transformer utilizes electromagnetic induction principle, transmits electric energy, energy from a circuit to another circuit
Amount is transmitted to the high-pressure side of transformer from the low-pressure side that case becomes, while voltage is increased to 10kV, and boosting indoor location temperature and humidity is certainly
Dynamic control device, automatically adjusts the indoor temperature and humidity of transformer.
Step-up transformer 10 carries out after boosting to 10kV voltage, and three-phase 10kV alternating current enters high-voltage electric energy measurement system
System, electrical energy metering information remote transmitting to power supply company's electric energy measurement center.Electric energy enters high pressure grid-connected system C after metering, warp
High voltage isolator 14 and high-voltage circuitbreaker 15 are connected to the grid, with 10kV voltage class and systems connection.The grid-connected system of high pressure
The C that unites uses grid-connected interface protector 19, which is mounted on the grid-connected point of 10kV, and device is not only integrated with protection, observing and controlling
Function is also equipped with specification conversion and remote moving function, sets for local monitoring system or remote dispatching system with distributed photovoltaic power generation
Communication bridge is established between standby, can both be run by intelligent distribution terminal 25 to all kinds of photovoltaics and be sent in the forwarding of monitoring and scheduling main website
The relevant information and operating status of the equipment such as height voltage breaker, protective device, electric energy meter, power quality, can also pass through distribution
Intelligent terminal receives the remote control separating brake of monitoring and scheduling main website, order of closing a floodgate, and is realized by wireless communication networks to photovoltaic power generation
The functions such as telemetering, remote signalling, the remote regulating stood.After distributed generation resource is incorporated into the power networks, after interconnection occurs transient fault and trips, point
Cloth power supply and load form unplanned property isolated operation and avoid isolated island from endangering to improve power supply reliability, detect system
After voltage to frequency exception, off-the-line distributed generation resource.
As shown in figure 3, the grid-connected booster stations system of integrated photovoltaic further includes communication system, wherein 3a in the present embodiment
For the communication system figure of pole-mounted circuit breaker and power supply company's monitoring center, 3b is the communication system of metering system and electric energy measurement center
System figure, 3c are the communication system figure of inverter and user's centralized-control center, and communication system includes that line feed terminals 24, electric flux are remote
Square terminal and intelligent distribution terminal 25, line feed terminals 24 are connected with pole-mounted circuit breaker, acquire the information that is incorporated into the power networks of grid entry point, with
The mode of GPRS wireless transmission is uploaded to power supply company's monitoring center, electric flux terminal unit and high-voltage electric-energy meter phase
Even, it acquires the metrical information of metering system and is uploaded to electric energy measurement center in such a way that GPRS is wirelessly transferred；Distribution intelligence
Terminal 25 and grid-connected interface protector, step-up transformer, inverter etc. are connected, for acquiring photovoltaic plant operation information and leading to
The mode for crossing GPRS wireless transmission is uploaded to monitoring and scheduling main website.
In the present embodiment, whole station sets a 5kVA station local coordinate frame 8 as whole station power supply for electrical equipment, configures a 2kVA's
UPS uninterruptible power supply, UPS are worked normally in online working method, i.e., by the rectified device of 220V/380V AC power source, inversion
Device is powered to load, when 220V/380V AC power source power loss or UPS rectifier fault, is then passed through by standing with DC power supply circuit
Inverter is powered to load.When fault of converter or overload or without output when, by static switch (automatic) be switched to bypass confession
Electricity.UPS device carries battery, and preparation time is 4 hours.
As shown in figure 4, being the monnolithic case figure of the utility model, 4a is the schematic view of the front view of the utility model, 4b
For the left view structural representation of the utility model, a power station has been integrated in a prepackage cabinet 1 by this system, the system
The high-voltage terminal part of transformer has synthesized one with high pressure grid-connected system, and transformer high-voltage wire outlet is directly entered high pressure measurement system
System, carried out after metering it is grid-connected, cabinet body use ring network cabinet body, booster stations shell use landscape glass fibre cement shell.This
Kind of structure is compact to design rationally, electrical equipment layout high reliablity configuration design substantially increases the safety of photovoltaic plant,
Stability and aesthetics.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of grid-connected booster stations system of integrated photovoltaic, it is characterised in that: including low-pressure system, booster system, the grid-connected system of high pressure
System and access system, low-pressure system, booster system, high pressure grid-connected system are integrally disposed in prefabricated box body；Low-pressure system includes
Low pressure inlet wire part and station power unit, low pressure inlet wire part are equipped with total low-voltage frame circuit breaker, and booster system includes rising
Pressure transformer, high pressure grid-connected system include that high-voltage electric-energy meter, high voltage isolator, high-voltage circuitbreaker, high-tension current are mutual
Sensor, high voltage potential transformer and grid-connected interface protector, access system include pole-mounted circuit breaker；Total low-voltage frame circuit breaker
It is connected on the low pressure enter line side of step-up transformer, the high-voltage terminal side of step-up transformer passes through copper bus-bar and high pressure grid-connected system phase
Even, high pressure grid-connected system is connect through cable run with pole-mounted circuit breaker, and pole-mounted circuit breaker accesses public electric wire net；High-voltage electric energy measurement
System is mounted on the high-voltage terminal side of step-up transformer, and high voltage isolator is cascaded with high-voltage circuitbreaker, high-tension current
Mutual inductor, high voltage potential transformer are connected to the grid side copper bus-bar of high-voltage circuitbreaker, and grid-connected interface protector is mounted on
The grid-connected point of 10kV.
2. the grid-connected booster stations system of integrated photovoltaic according to claim 1, it is characterised in that: prepackage cabinet includes low pressure
Room, booster chamber and hyperbaric chamber, low-pressure system, booster system and high pressure grid-connected system are respectively arranged at low-pressure chamber, booster chamber and height
In pressure chamber, divider wall is equipped between low-pressure chamber, booster chamber and hyperbaric chamber.
3. the grid-connected booster stations system of integrated photovoltaic according to claim 2, it is characterised in that: the divider wall is using stainless
Steel or ferrous material.
4. the grid-connected booster stations system of integrated photovoltaic according to claim 1, it is characterised in that: low-pressure system further includes low pressure
Current transformer and low pressure Surge Protector, low-voltage current mutual inductor and total low-voltage frame circuit breaker are mounted on step-up transformer
Low-pressure side, low pressure Surge Protector are connected on the low-pressure side copper bus-bar of step-up transformer.
5. the grid-connected booster stations system of integrated photovoltaic according to claim 1, it is characterised in that: high-voltage electric-energy meter packet
Include metered voltage mutual inductor, metering current mulual inductor and electric energy meter, metered voltage mutual inductor, metering current mulual inductor and electric energy meter
It is mounted on the high-voltage terminal side of step-up transformer, the high-pressure side of step-up transformer is connected to high pressure grid-connected system by copper bus-bar
High voltage isolator.
6. the grid-connected booster stations system of integrated photovoltaic according to claim 1, it is characterised in that: high pressure grid-connected system further includes
Zinc-Oxide Arrester and zero sequence current mutual inductor, high voltage isolator, high-voltage circuitbreaker are chained together, voltage transformer, electricity
Current transformer, Zinc-Oxide Arrester are connected to the grid side copper bus-bar side of high-voltage circuitbreaker, zero sequence current mutual inductor be mounted on to
At the cable outlet of pole-mounted circuit breaker.
7. the grid-connected booster stations system of integrated photovoltaic according to claim 1, it is characterised in that: further include communication system, lead to
Letter system includes that line feed terminals, electric flux terminal unit and intelligent distribution terminal, line feed terminals are connected with pole-mounted circuit breaker, acquisition
The operation information of grid integration point, is uploaded to power supply company's monitoring center in a manner of GPRS wireless transmission, and an electric flux distant place is whole
End is connected with high-voltage electric-energy meter, acquires energy measurement information and is uploaded to power supply in such a way that GPRS is wirelessly transferred
The electric energy measurement center of door；Intelligent distribution terminal is connected with grid-connected interface protector, step-up transformer, inverter, for adopting
Collection power station operation information is simultaneously uploaded to user's centralized-control center in such a way that GPRS is wirelessly transferred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820666801.5U CN208316308U (en) | 2018-05-04 | 2018-05-04 | The grid-connected booster stations system of integrated photovoltaic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820666801.5U CN208316308U (en) | 2018-05-04 | 2018-05-04 | The grid-connected booster stations system of integrated photovoltaic |
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| CN208316308U true CN208316308U (en) | 2019-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817191A (en) * | 2019-04-12 | 2020-10-23 | 特变电工山东沈变电气设备有限公司 | Box-type substation for photovoltaic |
-
2018
- 2018-05-04 CN CN201820666801.5U patent/CN208316308U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817191A (en) * | 2019-04-12 | 2020-10-23 | 特变电工山东沈变电气设备有限公司 | Box-type substation for photovoltaic |
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