CN210297272U - Photovoltaic grid-connected anti-reverse power supply protection device - Google Patents
Photovoltaic grid-connected anti-reverse power supply protection device Download PDFInfo
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- CN210297272U CN210297272U CN201921073601.XU CN201921073601U CN210297272U CN 210297272 U CN210297272 U CN 210297272U CN 201921073601 U CN201921073601 U CN 201921073601U CN 210297272 U CN210297272 U CN 210297272U
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- mainframe box
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- 238000003780 insertion Methods 0.000 claims description 104
- 230000037431 insertion Effects 0.000 claims description 104
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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 relates to a power supply technical field that is incorporated into the power networks, concretely relates to photovoltaic is incorporated into the power networks and is prevented anti-power supply protection device, including preventing island protection device and the switch that is incorporated into the power networks, prevent that island protection device includes mainframe box and operating panel, both can dismantle the connection, and operating panel is equipped with the cartridge convex part, and the mainframe box is equipped with the cartridge groove, and the cartridge convex part corresponds with the cartridge groove, can insert the cartridge inslot. The utility model provides a photovoltaic is incorporated into power networks prevents among the anti-power supply protection device that prevents island protection device's mainframe box and operating panel realize dismantling the connection through the plug of cartridge round pin axle, mainframe box and operating panel pass through the cooperation of female socket of circuit and the public plug of circuit, realize the quick split of mainframe box and operating panel, be convenient for independently change mainframe box or operating panel, hoisting device maintenance efficiency, only need change the mainframe box or operating panel that have a problem in the maintenance process, mainframe box or operating panel that do not have a problem can also continue to use, the availability factor of part has been promoted, it is extravagant to avoid unnecessary.
Description
Technical Field
The utility model relates to a power supply technical field that is incorporated into the power networks particularly, relates to photovoltaic is incorporated into the power networks and prevents power supply protection device.
Background
In recent years, distributed new energy power generation keeps a continuously increasing situation by virtue of economy and effectiveness, and the access of the distributed new energy power generation to a power distribution network also brings a series of problems to a power grid, wherein 'islanding' is one of the most widely researched subjects at present. Once islanding occurs, problems such as personal safety, economic efficiency, power quality, etc. may be caused. According to the standard, the inverter is required to be incorporated into a power distribution network with the voltage level of 10KV and below, and the power distribution network has an anti-islanding protection function. If the power supply of the power grid incorporated by the inverter is interrupted, the inverter stops supplying power to the power grid within 2s, and simultaneously sends out a warning signal.
At present, anti-island protection device among the anti-power supply protection device is prevented in current photovoltaic is incorporated into power networks all is the casing that adopts integrated into one piece processing, all parts are all installed in the casing, install operating panel on the cabinet door through the screw, the installation is complicated, and in case local part appears damaging, whole device all will be changed, perhaps need pull down whole anti-island protection device, change parts, the change process is complicated, the maintenance efficiency is low, and whole device is changed, make partial good part also to change, cause unnecessary waste.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a photovoltaic is incorporated into the power networks and is prevented anti-power supply protection device to among the photovoltaic is incorporated into the power networks of solving prior art prevents that the part of anti-island protection device among the power supply protection device changes the problem that the process is complicated, maintenance efficiency is low.
In order to realize the aim, the utility model provides a photovoltaic grid-connected anti-reverse power supply protection device, which comprises an anti-islanding protection device and a grid-connected switch, wherein, the anti-islanding protection device comprises a main case and an operation panel, the main case and the operation panel are detachably connected through a plug-in pin shaft, wherein,
one side of the operation panel facing the mainframe box is provided with an insertion convex part which is arranged along the circumferential direction of the operation panel, the insertion convex part is provided with an insertion hole, the side of the mainframe box facing the operation panel is provided with an insertion groove, the insertion groove corresponds to the position of the insertion convex part, and the insertion convex part can be inserted into the insertion groove,
the circumferential side face of the mainframe box is provided with insertion holes communicated with the insertion grooves, and the insertion pin shafts can be sequentially inserted into the insertion holes in the mainframe box and the insertion holes in the insertion convex parts along the direction perpendicular to the circumferential side face.
Optionally, a protrusion is arranged on the insertion pin shaft, the protrusion extends along the extending direction of the insertion pin shaft, grooves corresponding to the protrusion are arranged in the insertion hole and the insertion hole, and the grooves are tightly matched with the protrusion.
Optionally, on the circumferential side surface, an opening of the insertion hole is provided with an ear groove, and an end of the insertion pin shaft is provided with a lug which is matched with the ear groove.
Optionally, each circumferential side of the main chassis is provided with two insertion holes.
Optionally, the insertion pin is in threaded fit with the insertion hole and the insertion hole.
Optionally, a display screen and an operation key are arranged on the operation panel, and the display screen and the operation key are electrically connected with the mainframe box through a circuit.
Optionally, the photovoltaic grid-connected anti-reverse power supply protection device further comprises a grid-connected switch, and the grid-connected switch is arranged in the main case and used for controlling the on-off of the power supply.
As above, the utility model provides an anti-island protection device's of photovoltaic is incorporated into power networks mainframe and operating panel can dismantle the connection through the plug realization of cartridge round pin axle among the anti-power supply protection device that prevents, be equipped with the female socket of circuit on the mainframe, the last public plug of circuit that is equipped with of operating panel, through the cooperation of the female socket of circuit and the public plug of circuit, can realize the quick split of mainframe and operating panel, be convenient for independently change mainframe or operating panel, promote the maintenance efficiency of whole device, only need change the mainframe or operating panel that have a problem in the maintenance process, mainframe or operating panel that have no problem can also continue to use, the availability factor of part has been promoted, avoid unnecessary extravagant.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 schematically shows an external structure diagram of an anti-islanding protection device in a photovoltaic grid-connected anti-reverse power supply protection device of the utility model;
fig. 2 schematically shows a structure diagram of a main chassis of the anti-islanding protection device of the present invention;
fig. 3 schematically shows the structure diagram of the operation panel of the anti-islanding protection device of the present invention.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1-3, an embodiment of the utility model provides a photovoltaic is incorporated into power networks and is prevented anti-power supply protection device, including preventing island protection device 1 and being incorporated into power networks switch (not shown in the figure), wherein, prevent island protection device 1 and include mainframe box 10 and operating panel 11, mainframe box 10 with operating panel 11 can dismantle the connection through cartridge pin 12. That is to say, in this embodiment, the mainframe box 10 and the operation panel 11 can be connected detachably through the plug-in of the plug pin shaft 12, wherein, be equipped with the female socket 15 of circuit on the mainframe box 10, be equipped with the public plug 114 of circuit on the operation panel 11, through the cooperation of the female socket 15 of circuit and the public plug 114 of circuit, can realize the quick split of mainframe box 10 and operation panel 11 and peg graft, be convenient for independently change mainframe box 10 or operation panel 11, promote the maintenance efficiency of whole device, and, only need change the mainframe box 10 or the operation panel 11 that have problems among the maintenance process, the mainframe box 10 or the operation panel 11 that have no problems can also continue to use, the availability factor of part has been promoted, avoid unnecessary extravagant.
It should be noted that, the utility model discloses do not do the injecing to realizing dismantling the concrete mode of connection through the cartridge round pin axle between mainframe box and the operating panel, can set up according to actual need, as long as can realize between mainframe box and the operating panel stable installation with can dismantle the connection can.
Specifically, referring to fig. 1 to 3, in the present embodiment, the side of the operation panel 11 facing the main cabinet 10 is provided with an insertion protrusion 112, the insertion projection 112 is provided along the circumferential direction (as shown by the direction T in fig. 1 and 3) of the operation panel 11, the insertion hole 113 is provided in the insertion projection 112, the side of the main cabinet 10 facing the operation panel 11 is provided with a slot 13, the slot 13 corresponds to the position of the protruding part 112, the insertion protrusion 112 is capable of being inserted into the insertion groove 13, the circumferential (as shown in the direction T in fig. 1) side surface of the main casing 10 is provided with an insertion hole 14 communicating with the insertion groove 13, the insertion pin 12 is insertable into the insertion hole 14 of the main housing 10 and the insertion hole 113 of the insertion projection 112 in this order in a direction perpendicular to the circumferential side surface.
That is, the main cabinet 10 and the operation panel 11 are detachably connected by the mutual fit of the insertion protrusion 112 and the insertion groove 13, wherein the insertion hole 113 is formed on the insertion protrusion 112, the insertion hole 14 communicating with the insertion groove 13 is formed on the side surface of the main cabinet 10, after the insertion protrusion 112 on the operation panel 11 is completely inserted into the insertion groove 13, the insertion hole 113 and the insertion hole 14 are aligned, and then the insertion pin 12 is sequentially inserted into the insertion hole 14 on the main cabinet 10 and the insertion hole 113 on the insertion protrusion 112 along the direction perpendicular to the circumferential side surface, so that the main cabinet 10 and the operation panel 11 are tightly fitted, vibration during use is avoided, and the operation is simple in the whole assembly process.
In addition, in order to avoid the rotation of the insertion pin after the insertion, referring to fig. 1 to 3, in this embodiment, a protrusion 120 is disposed on the insertion pin 12, the protrusion 120 extends along the extending direction of the insertion pin 12, a groove 140 corresponding to the protrusion 120 is disposed in each of the insertion hole 14 and the insertion hole 113, and the groove 140 is tightly fitted with the protrusion 120. During insertion, the protrusions 120 on the insertion pin 12 correspond to the insertion holes 14 and the grooves 140 in the insertion holes 113, so that the insertion pin 12 can be inserted in a fixed direction, the rotation of the insertion pin 12 during assembly is avoided, and loosening and vibration between the main cabinet 10 and the operation panel 11 after the installation are ensured, thereby ensuring stable and reliable operation of the whole device.
Further, in the present embodiment, on the circumferential side surface of the main cabinet 10, an ear groove 141 is provided at the opening of the insertion hole 13, and a lug 121 is provided at the end of the insertion pin 12, and the lug 121 is engaged with the ear groove 141. During the insertion of the insertion pin 12 into the insertion hole 14 and the insertion hole 113, the insertion pin 12 is inserted in a fixed direction such that the lug 121 on the end of the insertion pin 12 corresponds to the lug groove 141 on the side of the main housing 10. After the insertion, the lug 121 can be completely inserted into the ear groove 141, so that the lug 121 is tightly matched with the ear groove 141, the insertion pin shaft 12 can be stably inserted into the insertion hole 13, and the situation that the insertion pin shaft 12 falls off is avoided.
It is required to explain, the utility model discloses do not restrict the quantity in the cartridge hole that sets up on the mainframe box, specific quantity can set up according to actual need, as long as can ensure between mainframe box and the operating panel reliable and stable connection can. Specifically, referring to fig. 1 to 3, in the present embodiment, each circumferential side of the main housing 10 is provided with two insertion holes 14. In other embodiments, more insertion holes may be provided on each side of the main cabinet.
Except that the detachable connection between the mainframe box and the operation panel is realized through the insertion of the insertion pin shaft, in other embodiments, the insertion pin shaft is in threaded fit with the insertion hole and the insertion hole, that is, threads are arranged in the insertion hole and the insertion hole, threads are also arranged on the insertion pin shaft, and the insertion pin shaft is in threaded fit with the insertion hole and the insertion hole, so that the disassembly and the assembly are convenient.
Further, in this embodiment, a display screen 110 and operation keys 111 are disposed on the operation panel 11, and the display screen 110 and the operation keys 111 are electrically connected to the main cabinet 10 through a circuit.
In addition, in the present embodiment, a grid-connected switch is provided in the main cabinet 10 to control on/off of the power supply. Specifically, the grid-connected switch is a photovoltaic special grid-connected switch, is suitable for a line with 50Hz alternating current, four-stage rated voltage of 400V and rated current of 63-800A, and can rapidly cut off a fault power supply in a very short time when a person gets an electric shock or the leakage current of a power grid exceeds a specified value, so that the safety of the person and electric equipment is protected. In addition, the grid-connected switch can transmit the electrical performance information (such as three-phase voltage, three-phase current, residual current value, etc.) of the circuit to the operation panel 11 through the host in the host box 10, and display the electrical performance information in real time through the display screen 110 on the operation panel 11.
As for, be applied to the technical scheme of the utility model, the utility model provides a photovoltaic is incorporated into power networks prevents among the power supply protection device that prevents island protection device's mainframe box and operating panel can realize dismantling the connection through the plug of cartridge round pin axle, be equipped with the female socket of circuit on the mainframe box, the last public plug of circuit that is equipped with of operating panel, through the cooperation of the female socket of circuit and the public plug of circuit, can realize the quick split of mainframe box and operating panel, be convenient for independently change mainframe box or operating panel, promote the maintenance efficiency of whole device, only need change the mainframe box or operating panel that have a problem in the maintenance process, mainframe box or operating panel that do not have a problem can also continue to use, the availability factor of part has been promoted, avoid unnecessary extravag.
To sum up, the above embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A photovoltaic grid-connected anti-reverse power supply protection device comprises an anti-islanding protection device and a grid-connected switch, wherein the anti-islanding protection device comprises a main case and an operation panel, and is characterized in that the main case and the operation panel are detachably connected through a plug-in pin shaft,
one side of the operation panel facing the mainframe box is provided with an insertion convex part which is arranged along the circumferential direction of the operation panel, the insertion convex part is provided with an insertion hole, the side of the mainframe box facing the operation panel is provided with an insertion groove, the insertion groove corresponds to the position of the insertion convex part, and the insertion convex part can be inserted into the insertion groove,
the circumferential side face of the mainframe box is provided with insertion holes communicated with the insertion grooves, and the insertion pin shafts can be sequentially inserted into the insertion holes in the mainframe box and the insertion holes in the insertion convex parts along the direction perpendicular to the circumferential side face.
2. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein a protrusion is arranged on the plug pin shaft, the protrusion extends along the extension direction of the plug pin shaft, grooves corresponding to the protrusion are arranged in the plug hole and the plug hole, and the grooves are tightly matched with the protrusion.
3. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein an ear groove is formed at an opening of the insertion hole on the circumferential side surface, and a lug is formed at an end of the insertion pin shaft and is matched with the ear groove.
4. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein each circumferential side of the main cabinet is provided with two plug-in holes.
5. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein the plug pin shaft is in threaded fit with the plug hole and the insertion hole.
6. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein a display screen and an operation key are arranged on the operation panel, and the display screen and the operation key are electrically connected with the main cabinet through a circuit.
7. The photovoltaic grid-connected anti-reverse-power-supply protection device as claimed in claim 1, wherein the grid-connected switch is arranged in the main cabinet and used for controlling on and off of a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073601.XU CN210297272U (en) | 2019-07-10 | 2019-07-10 | Photovoltaic grid-connected anti-reverse power supply protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073601.XU CN210297272U (en) | 2019-07-10 | 2019-07-10 | Photovoltaic grid-connected anti-reverse power supply protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297272U true CN210297272U (en) | 2020-04-10 |
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ID=70101530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921073601.XU Active CN210297272U (en) | 2019-07-10 | 2019-07-10 | Photovoltaic grid-connected anti-reverse power supply protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297272U (en) |
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2019
- 2019-07-10 CN CN201921073601.XU patent/CN210297272U/en active Active
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