CN213426104U - Photovoltaic exchanges collection flow box safety operation device - Google Patents
Photovoltaic exchanges collection flow box safety operation device Download PDFInfo
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- CN213426104U CN213426104U CN202022801817.2U CN202022801817U CN213426104U CN 213426104 U CN213426104 U CN 213426104U CN 202022801817 U CN202022801817 U CN 202022801817U CN 213426104 U CN213426104 U CN 213426104U
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- circuit breaker
- case circuit
- shunt release
- operating mechanism
- photovoltaic
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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
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Abstract
The utility model relates to a photovoltaic AC combiner box safe operation device, which comprises a box body, wherein the box body is provided with a molded case circuit breaker, a shunt release, a change-over switch and an AC control transformer, and the molded case circuit breaker is provided with an electric operation mechanism; the output end of the alternating-current control transformer is connected with the incoming line of the box body, the output end of the alternating-current control transformer supplies power for the electric operating mechanism and the shunt release, a normally-open auxiliary contact of a molded case circuit breaker of the molded case circuit breaker is connected with the shunt release and the change-over switch in series, a normally-open contact of a shunt coil of the shunt release is connected with the electric operating mechanism in series, and the electric operating mechanism is used for disconnecting the molded case circuit breaker. The utility model discloses only need put through change over switch can, the power that original operation needs is provided by electronic operating mechanism, and personnel need not be too near from the electrified body simultaneously, can be applicable to all group's string formula scheme power stations, can reduce the experience and the requirement of ability each side to fortune dimension personnel, reduce fortune dimension personnel's fortune dimension risk simultaneously.
Description
Technical Field
The utility model relates to a photovoltaic exchanges the collection flow box field, especially relates to a photovoltaic exchanges collection flow box safety operation device.
Background
The alternating current combiner box is a device for ensuring the orderly connection and the combining function of the photovoltaic modules in the photovoltaic power generation system. The device provides short-circuit protection function to subordinate's dc-to-ac converter and cable, ensures that photovoltaic system is easily cut off the circuit when maintaining, overhauing, reduces the power failure scope when photovoltaic system breaks down. A certain number of photovoltaic modules with the same specification are connected in series to form a photovoltaic string, the photovoltaic string is converted into alternating current through inverters, output cables of a plurality of inverters are connected in parallel to a photovoltaic alternating current combiner box, and after the output cables are collected through the alternating current combiner box, the output cables are further boosted through a box-type transformer to send out electric energy, so that grid-connected connection with commercial power is achieved.
For a power station provided with an alternating current combiner box, when the alternating current combiner box, an alternating current cable and a group string type inverter have faults, an outgoing main breaker of the alternating current combiner box needs to be cut off, and a fault loop needs to be isolated and maintained. The mode that this return circuit adopted is cut off at present is manually operation circuit breaker, and electric arc can appear in this operation process, and because topography restriction part exchanges collection flow box mounted position not good, causes the operation inconvenient, can threaten fortune dimension personnel life safety even. On the other hand, the operation process of the method needs to use large force for operation, which is very inconvenient.
Therefore, it is very necessary to specially design a novel safety operation device of the alternating current combiner box.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a photovoltaic ac combiner box safety operating device that overcomes or at least partially solves the above problems.
According to one aspect of the utility model, a photovoltaic AC combiner box safe operation device is provided, which comprises a box body, wherein a molded case circuit breaker, a shunt release, a change-over switch and an AC control transformer are arranged on the box body, and an electric operation mechanism is arranged on the molded case circuit breaker; the output end of the alternating-current control transformer is connected with the incoming line of the box body, the output end of the alternating-current control transformer supplies power for the electric operating mechanism and the shunt release, a normally-open auxiliary contact of a molded case circuit breaker of the molded case circuit breaker is connected with the shunt release and the change-over switch in series, a normally-open contact of a shunt coil of the shunt release is connected with the electric operating mechanism in series, and the electric operating mechanism is used for disconnecting the molded case circuit breaker.
In one possible embodiment, the rated operating current of the molded case circuit breaker is 250A-630A.
In one possible embodiment, the electric operating mechanism is powered by DC24V, the motor power is 160W, and the action current is 3A-6A.
In one possible embodiment, the shunt release is powered by DC24V, the shunt release has power consumption of 8W-20W, and the shunt release has a self-resetting function.
In one possible implementation, the rated power of the alternating current control transformer is 350W, and the voltage transformation ratio is AC 500V-800V/DC 24V.
In one possible embodiment, an ac fuse and a dc fuse are respectively disposed on the ac and dc sides of the ac control transformer to protect the equipment and the line.
The original AC combiner box is manually operated by a person or a mechanism during maintenance, is closer to a charged body and simultaneously needs larger force. The utility model discloses only need put through change over switch can, the power that original operation needs is provided by electronic operating mechanism, and personnel need not be too near from the electrified body simultaneously, can be applicable to all group's string formula scheme power stations, can be used for new product, also can be used to build the transformation in power station. The added equipment is cheap, but the requirements on the experience and the capability of the operation and maintenance personnel can be reduced, and the operation and maintenance risk of the operation and maintenance personnel is reduced. The utility model discloses operation safety, operation convenience, extensive applicability, cost are low.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an installation schematic view of a photovoltaic ac combiner box safety operation device provided in an embodiment of the present invention;
fig. 2 is a system wiring diagram of a photovoltaic ac combiner box safety operation device according to an embodiment of the present invention;
description of reference numerals:
1-an alternating current control transformer; 2-shunt release; 3-a transfer switch; 4-an electric operating mechanism; 5-molded case circuit breakers; 6-AC fuse; 7-a direct current fuse; 8-auxiliary normally open contacts of the molded case circuit breaker; and 9-auxiliary normally open contacts of the shunt release.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1-2, the embodiment of the utility model provides a photovoltaic exchanges collection flow box safety operating means, including the box, be provided with moulded case circuit breaker 5, shunt release 2, change over switch 3, alternating current control transformer 1 on the box, the last electric operating mechanism 4 that installs of moulded case circuit breaker 5.
The utility model discloses an alternating current control transformer 1, including box, transfer switch 3, electric operating mechanism 4, branch excitation release 2, moulded case circuit breaker normally open auxiliary contact 8, moulded case circuit breaker 5, electric operating mechanism 4 is used for breaking off moulded case circuit breaker 5, and the output of alternating current control transformer 1 does electric operating mechanism 4 and branch excitation release 2 power supplies, moulded case circuit breaker normally open auxiliary contact 8 of moulded case circuit breaker 5 with branch excitation release 2 change over switch 3 establishes ties, branch excitation coil normally open contact 9 of branch excitation release 2 with electric operating mechanism 4 establishes ties, electric operating mechanism 4 is used for breaking off moulded.
In one example, the rated operating current of the molded case circuit breaker 5 is 250A-630A.
In one example, the electric operating mechanism 4 is powered by DC24V, the motor power is 160W, and the actuating current is 3A-6A.
In one example, the shunt release 2 is powered by DC24V, the shunt release has power consumption of 8W-20W, and the shunt release 2 has a self-resetting function.
In one example, the working voltage of the change-over switch 3 is DC24V, the secondary operation voltage is DC24V, and the operator is safer.
In one example, the rated power of the alternating current control transformer 1 is 350W, the voltage transformation ratio is AC 500V-800V/DC 24V, and the output voltage is consistent with the working voltage of the shunt release 2 and the electric operating mechanism 4.
Moulded case circuit breaker 5 is in the closing position, moulded case circuit breaker normally opens auxiliary contact 8 and is closed, it is closed through change over switch 3, 2 return circuits of shunt release are electrified, shunt coil normally open contact 9 is closed, the closed electrification of 4 place return circuits of electronic operating mechanism, 4 actions of electronic operating mechanism, realize moulded case circuit breaker 5 disconnection, simultaneously the disconnection of normally open contact 8, position at the circuit breaker disconnection this moment, operation change over switch 3, shunt release 2 can't realize electrified once more, need the closed back of circuit breaker 5, can realize the secondary operation with the 8 closure sides of normally open contact, so ensured change over switch at the closed position, moulded case circuit breaker 5 can not close a floodgate.
In one example, ac fuses 6 and dc fuses 7 are respectively disposed on the ac and dc sides of the ac control transformer 1 to protect the equipment and lines.
In one example, the electric operating mechanism 4 is fixedly connected with the molded case circuit breaker through a bolt, and the shunt release 2 is controlled to operate through the change-over switch 3, so as to control the operation of the operating switch, and achieve the purpose of disconnecting the molded case circuit breaker 5. The shunt release 2 must be powered off and reset, and then powered on again to act.
When a fault or maintenance needs to cut off the loop, the change-over switch is closed to a tripping position, the electric operating mechanism 4 is enabled to act through the shunt release 2, the output molded case circuit breaker 5 is disconnected, meanwhile, the change-over switch is at the tripping position, the shunt coil is electrified for a long time, the coil of the electric operating mechanism 4 of the circuit breaker is electrified for a long time, the molded case circuit breaker 5 cannot carry out switching-on operation, and the safety of maintenance personnel is ensured; after maintenance and overhaul are finished, the change-over switch is reset, the shunt release is powered off and reset, and the shunt release can act after being operated again.
The utility model discloses a change over switch 3 control shunt release 2 moves, and then controls 4 actions of electric operating mechanism, and disconnection moulded case circuit breaker 5 overhauls, isolation fault. The shunt release 2 and the electric operating mechanism 4 are supplied with power by adopting an independent alternating current control transformer. After the shunt release 2 acts, the shunt release 2 can act only by supplying power again after power-off reset. The device has the advantages of safe operation, convenient operation, wide applicability and low cost.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A safe operation device of a photovoltaic alternating current combiner box is characterized by comprising a box body, wherein a molded case circuit breaker (5), a shunt release (2), a change-over switch (3) and an alternating current control transformer (1) are arranged on the box body, and an electric operation mechanism (4) is arranged on the molded case circuit breaker (5);
wherein, the inlet wire of box is connected to the output of AC control transformer (1), the output of AC control transformer (1) does electric operating mechanism (4) and shunt release (2) power supply, the moulded case circuit breaker of moulded case circuit breaker (5) normally open auxiliary contact (8) with shunt release (2) change over switch (3) are established ties, the shunt coil normally open contact (9) of shunt release (2) with electric operating mechanism (4) are established ties, electric operating mechanism (4) are used for breaking off moulded case circuit breaker (5).
2. The photovoltaic ac combiner box safety operating device of claim 1, wherein said molded case circuit breaker (5) has a rated operating current of 250-630A.
3. The pv ac combiner box safety operating device of claim 1, wherein the electric operating mechanism (4) is powered by DC24V, the motor power is 160W, and the operating current is 3A-6A.
4. The photovoltaic alternating current combiner box safe operating device is characterized in that the shunt release (2) is powered by DC24V, the power consumption of the shunt release is 8W-20W, and the shunt release (2) has a self-resetting function.
5. The photovoltaic AC combiner box safety operating device according to claim 1, characterized in that the rated power of the AC control transformer (1) is 350W, and the voltage transformation ratio is AC 500V-800V/DC 24V.
6. The photovoltaic AC combiner box safety operation device according to claim 1, wherein the AC and DC sides of the AC control transformer (1) are respectively provided with an AC fuse (6) and a DC fuse (7) for protecting equipment and lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801817.2U CN213426104U (en) | 2020-11-27 | 2020-11-27 | Photovoltaic exchanges collection flow box safety operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801817.2U CN213426104U (en) | 2020-11-27 | 2020-11-27 | Photovoltaic exchanges collection flow box safety operation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213426104U true CN213426104U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022801817.2U Active CN213426104U (en) | 2020-11-27 | 2020-11-27 | Photovoltaic exchanges collection flow box safety operation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213426104U (en) |
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2020
- 2020-11-27 CN CN202022801817.2U patent/CN213426104U/en active Active
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