CN212660137U

CN212660137U - Photovoltaic conflux regulator cubicle

Info

Publication number: CN212660137U
Application number: CN202021776260.5U
Authority: CN
Inventors: 周瑾; 吴国军; 殷俊秋; 凌湘
Original assignee: Jiangsu Huazhou Electric Co ltd
Current assignee: Jiangsu Huazhou Electric Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-03-05
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a photovoltaic conflux regulator cubicle in the regulator cubicle manufacturing field, the intelligent cabinet temperature adjusting device comprises a cabinet body, the bottom of the cabinet body is provided with the multiunit input, a plurality of positive interfaces and the preceding positive busbar of input link to each other, a plurality of negative interfaces and the preceding negative busbar of input link to each other, preceding positive busbar links to each other with the positive pole of high-voltage circuit breaker, preceding negative busbar links to each other with the negative pole of high-voltage circuit breaker, the positive pole of high-voltage circuit breaker links to each other with anti-reverse diode, anti-reverse diode links to each other with the back positive busbar, the negative pole of high-voltage circuit breaker links to each other with the back negative busbar, back positive busbar links to each other with the positive pole of direct current circuit breaker, back negative busbar links to each other with the negative pole of direct current; can be in the same place photovoltaic conflux case and DC distribution cabinet integration, reduced the cable use amount, very big cost reduction, the utility model discloses can be used to photovoltaic electric current and carry.

Description

Photovoltaic conflux regulator cubicle

Technical Field

The utility model relates to an electrical cabinet.

Background

In the photovoltaic power generation system, a plurality of photovoltaic panel currents are connected into a photovoltaic combiner box in parallel, and after being combined in the photovoltaic combiner box, the currents are output through a direct current power distribution cabinet and matched with a photovoltaic inverter to form the complete photovoltaic power generation system. However, the photovoltaic combiner box and the dc power distribution cabinet in the prior art are separately arranged, so that a large number of cables are required to be connected between the photovoltaic combiner box and the dc power distribution cabinet, which increases the cost of the photovoltaic electric field, especially the small-scale electric field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a photovoltaic conflux regulator cubicle can be in the same place photovoltaic conflux case and DC distribution cabinet integration, has reduced the cable use amount, very big cost is reduced.

For realizing the above-mentioned purpose, the utility model provides a photovoltaic conflux regulator cubicle, the intelligent cabinet temperature adjusting device comprises a cabinet body, the bottom of the cabinet body is provided with the multiunit input, a plurality of positive interfaces of input link to each other with preceding positive busbar, a plurality of negative interfaces of input link to each other with preceding negative busbar, preceding positive busbar links to each other with high-voltage circuit breaker's positive pole, preceding negative busbar links to each other with high-voltage circuit breaker's negative pole, high-voltage circuit breaker's positive pole and prevent that reverse diode links to each other, prevent that reverse diode links to each other with back positive busbar, high-voltage circuit breaker's negative pole links to each other with back negative busbar, back positive busbar links to each other with direct current circuit breaker's positive pole, back negative busbar links to each other with direct current circuit breaker's negative pole.

Compared with the prior art, the beneficial effects of the utility model reside in that, link to each other the positive pole of a plurality of photovoltaic board and the positive pole interface of the internal bottom of cabinet, link to each other its negative pole with the negative pole interface, positive pole interface and negative pole interface link to each other with preceding positive busbar and preceding negative busbar respectively, make the electric current of photovoltaic board to converge in the switch board, link to each other with preventing reverse diode after high-voltage circuit breaker control break-make again, the phenomenon of flow backwards appears in avoiding the electric current, link to each other with direct current breaker after converging through back positive busbar and back negative busbar, and link to each other with the dc-to-ac converter through direct current breaker, can be in the same place photovoltaic conflux case and dc-to-dc switch board integration, the cable use amount has been reduced, very big reduction of cost, the utility model discloses can be used to.

As a further improvement, all be provided with the high-pressure fuse between positive electrode interface and the preceding positive busbar and between negative electrode interface and the preceding negative busbar, fuse with the cut-off circuit protection rather than the electric elements who links to each other when taking place the fault such as short circuit or transshipping like this.

As a further improvement, all be provided with data collection station between high-pressure fuse and the preceding anodal busbar and between high-pressure fuse and the preceding negative busbar, can carry out real-time data acquisition to the direct current of input like this.

As a further improvement, the high-voltage circuit breaker is provided with a direct-current high-voltage lightning arrester between the anode and the cathode in parallel, so that the lightning overvoltage and the transient overvoltage can damage the direct-current power supply system and the electric equipment, and the safety of the protection equipment and the user is ensured.

As the utility model discloses a further improvement, between the positive pole of back positive busbar and direct current circuit breaker and between the negative pole of back negative busbar and direct current circuit breaker parallelly connected there is the voltmeter, can carry out real-time measurement to the voltage of input like this.

As a further improvement, the photovoltaic special lightning protection device is connected in parallel between the positive pole of back positive busbar and direct current breaker and between the negative pole of back negative busbar and direct current breaker, can protect devices such as photovoltaic module and dc-to-ac converter like this when receiving lightning impulse and the operation of upper reaches electrical power generating system switch and arousing the surge that the coupling voltage of perception or capacitance produced.

Drawings

Fig. 1 is a circuit connection diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

a photovoltaic conflux electrical cabinet as shown in fig. 1, which includes a cabinet body, the bottom of the cabinet body is provided with a plurality of groups of input ends, a plurality of positive interfaces of the input ends are connected with a front positive busbar, a plurality of negative interfaces of the input ends are connected with a front negative busbar, the front positive busbar is connected with a positive electrode of a high-voltage circuit breaker, the front negative busbar is connected with a negative electrode of the high-voltage circuit breaker, the positive electrode of the high-voltage circuit breaker is connected with an anti-reflection diode, the anti-reflection diode is connected with a rear positive busbar, the negative electrode of the high-voltage circuit breaker is connected with a rear negative busbar, the rear positive busbar is connected with a positive electrode of a direct-current circuit breaker, and the rear negative busbar is; high-voltage fuse wires are arranged between the positive electrode interface and the front positive electrode bus bar and between the negative electrode interface and the front negative electrode bus bar; data collectors are arranged between the high-voltage fuse wire and the front positive busbar and between the high-voltage fuse wire and the front negative busbar; a direct-current high-voltage lightning protector is arranged between the anode and the cathode of the high-voltage circuit breaker in parallel; a voltmeter is connected in parallel between the rear positive electrode bus bar and the positive electrode of the direct current circuit breaker and between the rear negative electrode bus bar and the negative electrode of the direct current circuit breaker; and special photovoltaic lightning protection devices are connected in parallel between the rear positive busbar and the positive electrode of the direct-current circuit breaker and between the rear negative busbar and the negative electrode of the direct-current circuit breaker.

In the utility model, the anodes of a plurality of photovoltaic panels are connected with the anode interface at the bottom in the cabinet body, the cathodes of the photovoltaic panels are connected with the cathode interface, the anode interface and the cathode interface are respectively connected with the front anode busbar and the front cathode busbar, so that the current of the photovoltaic panels can be converged in the power distribution cabinet, high-voltage fuse wires are arranged between the anode interface and the front anode busbar and between the cathode interface and the front cathode busbar for circuit protection, and then are connected with a high-voltage circuit breaker through a data collector for real-time data acquisition of the input direct current, a direct-current high-voltage lightning arrester is connected in parallel between the anode and the cathode of the high-voltage circuit breaker for protecting the safety of equipment and users, the high-voltage circuit breaker is connected with a reverse diode after being controlled to be switched off, the backflow phenomenon of the current is avoided, and the photovoltaic panels are connected with the direct-current circuit breaker after being converged by the rear anode busbar and, the direct-current circuit breaker is connected with the inverter, a voltmeter and a special photovoltaic lightning protector are connected between the positive pole and the negative pole of the direct-current circuit breaker in parallel, so that the input voltage can be measured in real time, and devices such as a photovoltaic panel at the front end and a photovoltaic inverter at the rear end can be protected when lightning strike occurs.

The utility model discloses integrate photovoltaic collection flow box and direct current distribution together, not only practiced thrift the wiring cost but also safe and reliable more.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a photovoltaic conflux regulator cubicle, includes the cabinet body, its characterized in that: the bottom of the cabinet body is provided with the multiunit input, a plurality of positive pole interfaces of input link to each other with preceding positive bus bar, a plurality of negative pole interfaces of input link to each other with preceding negative bus bar, preceding positive bus bar links to each other with high voltage circuit breaker's positive pole, preceding negative bus bar links to each other with high voltage circuit breaker's negative pole, high voltage circuit breaker's positive pole with prevent anti-reverse diode and link to each other, prevent that reverse diode links to each other with back positive bus bar, high voltage circuit breaker's negative pole links to each other with back negative bus bar, back positive bus bar links to each other with direct current circuit breaker's positive pole, back negative bus bar links to each other with direct current circuit breaker's negative pole.

2. The photovoltaic busbar electrical cabinet as claimed in claim 1, wherein: and high-voltage fuse wires are arranged between the positive electrode interface and the front positive electrode bus bar and between the negative electrode interface and the front negative electrode bus bar.

3. The photovoltaic busbar electrical cabinet as claimed in claim 2, wherein: and data collectors are arranged between the high-voltage fuse wire and the front positive busbar and between the high-voltage fuse wire and the front negative busbar.

4. The photovoltaic busbar electrical cabinet as claimed in claim 3, wherein: and a direct-current high-voltage lightning protector is connected in parallel between the anode and the cathode of the high-voltage circuit breaker.

5. The photovoltaic busbar electrical cabinet as set forth in claim 4, wherein: and voltmeters are connected in parallel between the rear positive bus bar and the positive pole of the direct-current circuit breaker and between the rear negative bus bar and the negative pole of the direct-current circuit breaker.

6. The photovoltaic busbar electrical cabinet as set forth in claim 5, wherein: and a special photovoltaic lightning protection device is connected in parallel between the rear positive busbar and the positive pole of the direct-current circuit breaker and between the rear negative busbar and the negative pole of the direct-current circuit breaker.