CN212571885U

CN212571885U - Photovoltaic outdoor inverter and step-up transformer integrated all-in-one machine

Info

Publication number: CN212571885U
Application number: CN202021146852.9U
Authority: CN
Inventors: 王乾; 蒋军腾; 武晓文; 李准; 宁方松; 王坤
Original assignee: SHANDONG TAIKAI KIOSK CO LTD
Current assignee: SHANDONG TAIKAI KIOSK CO LTD
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-19
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses an integrated all-in-one of photovoltaic user external inverter step-up transformer, whole integrated all-in-one structure is through adopting outdoor dc-to-ac converter, is equipped with the hanging beam at the base minor face, adopts a style of calligraphy hanging beam to lift by crane to reduced the whole volume of all-in-one, and carry out overall arrangement and optimization through with high low-pressure room, transformer and dc-to-ac converter isotructure, thereby reduce material purchasing cost, manufacturing cost and cost of transportation, improve the market competition that the case becomes, continuous realization creates the income. The utility model discloses the case becomes volume area little, and compact structure cost is low, and the dependable performance just makes things convenient for site operation and maintenance.

Description

Photovoltaic outdoor inverter and step-up transformer integrated all-in-one machine

Technical Field

The utility model relates to a new forms of energy photovoltaic power generation field, in particular to photovoltaic user external inverter step-up transformer integrated all-in-one machine.

Background

The state issues and implements 'renewable energy law', establishes policy measures such as regional electricity price, quota guidance, full-amount guarantee acquisition and the like for the development of new energy power generation, and establishes a policy system for promoting the development of new energy power generation. In the years of 2018 plus 2027, newly increased grid-connected capacity exceeds 20GW in China, and the expected accumulated grid-connected capacity reaches 406GW at the end of 2027. The company produces a plurality of box transformer products with the transformer capacity of 3150kVA and above in 19 years. These projects mark the growing times of photovoltaic electric field projects to be more and more formally oriented to large capacity, compact and low cost.

The capacity of the set is increased by necessity, and the number of manufacturers with the production capacity of the integrated all-in-one machine in the market is small at present.

Disclosure of Invention

In order to solve the technical problem, the utility model discloses a photovoltaic user external inverter step-up transformer integrated all-in-one machine, its technical scheme is:

the high-voltage and low-voltage lightning arrester comprises a high-voltage and low-voltage chamber, a transformer and an inverter, wherein the high-voltage and low-voltage chamber, the transformer and the inverter are respectively and fixedly arranged on a base, the transformer is arranged on one side of the high-voltage and low-voltage chamber, a high-voltage cable, a busbar, a high-voltage sensor, a high-voltage fuse, a high-voltage lightning arrester and a high-voltage sleeve are arranged in the high-voltage and low-voltage chamber, the high-voltage cable is vertically and fixedly arranged in the high-voltage and low-voltage chamber, the upper part of the high-voltage cable is fixedly connected with one end of the busbar, the lower part of the high-voltage cable penetrates through the bottom of the high-voltage chamber and is connected with an external main power grid, the high-voltage sensor is arranged in the middle part of the high-voltage and low-voltage chamber, the other end of the high-voltage transformer penetrates out of the high-voltage chamber and the low-voltage chamber and is fixed on the outer side of the transformer; the inverter is outdoor, the low-voltage alternating current side of the transformer and the alternating current side of the inverter are connected with a copper bar which is protected by a copper bar protective cover, and the copper bar is placed in the inverter compartment.

Furthermore, a hanging shaft is arranged on the short side of the base, and a straight hanging beam is adopted for hanging.

Furthermore, the outer left and right sides of the inverter are an alternating current side door and a direct current side door respectively, and the bottom of the inverter extends into the low-voltage direct current incoming cable.

Further, the transformer adopts an S11 oil-immersed transformer.

The utility model has the advantages that: the utility model discloses an integrated all-in-one of photovoltaic user external inverter step-up transformer, whole integrated all-in-one structure is through adopting outdoor dc-to-ac converter, is equipped with the hanging beam at the base minor face, adopts a style of calligraphy hanging beam to lift by crane to reduced the whole volume of all-in-one, and carry out overall arrangement and optimization through with high low-pressure room, transformer and dc-to-ac converter isotructure, thereby reduce material purchasing cost, manufacturing cost and cost of transportation, improve the market competition that the case becomes, continuous realization creates the income. The utility model discloses the case becomes volume area little, and compact structure cost is low, and the dependable performance just makes things convenient for site operation and maintenance.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view taken from the side of FIG. 1-A;

FIG. 3 is a view from the side of FIG. 1-B;

FIG. 4 is a top view of FIG. 1;

as shown in the figure, 1 high tension cable, 2 busbar, 3 high pressure sensor, 4 high-voltage arrester, 5 high-tension bushing, 6 high-voltage fuse, 7 high-low pressure rooms, 8 transformers, 9 inverters, 10 alternating current connector banks and guard shields, 11 low-voltage direct current inlet wire cables, 12 all-in-one lifts by crane the davit, 13 high-low pressure room radiator fan, 14 all-in-one ground terminal, 15 bases.

Detailed Description

As shown in the figure, the utility model discloses an integrated all-in-one of photovoltaic user external inverter step-up transformer, including high low-voltage chamber 7, transformer 8 and dc-to-ac converter 9, the transformer adopts S11 oil-immersed transformer, and the indoor low-voltage unit cabinet body of high low-voltage chamber is for synthesizing the block terminal structure, contains components and parts such as measuring and control device, auxiliary power source, all kinds of signal terminals.

High low-voltage chamber, transformer and dc-to-ac converter are fixed mounting respectively on base 15, high low-voltage chamber installs in high low-voltage chamber shell, high low-voltage chamber cooling fan 11 is installed at high low-voltage chamber shell left side top, shell right side installation transformer, be equipped with high tension cable 1 in the high low-voltage chamber, busbar 2, high pressure sensor 3, high-voltage fuse 6, high-voltage arrester 4 and high-voltage bushing 5, the vertical fixed mounting of high tension cable is in high low-voltage chamber, high tension cable's upper portion and busbar one end fixed connection, the lower part passes high-voltage chamber bottom and is connected with outside main electric network, high tension cable sets up the indoor middle part of high low-voltage chamber, high tension cable is used for outwards carrying the electric energy. The high-voltage sensor is arranged in the middle of the high-low voltage chamber, the bottom of the high-voltage sensor is fixedly connected with the busbar, the high-voltage arrester and the high-voltage sleeve are arranged on the right side of the high-low voltage chamber, the high-voltage arrester is arranged on the lower portion of the high-voltage sleeve, one end of the high-voltage sleeve is connected with the busbar through a lead, the other end of the high-voltage sleeve is connected with the high-voltage fuse through a lead, one end of the high-voltage arrester is connected with the busbar through a lead; the inverter is outdoor, an inverter chamber of a traditional all-in-one machine is omitted, the whole size is reduced, the manufacturing cost and the transportation cost of the traditional all-in-one machine are saved, and the civil engineering cost of the photovoltaic variable electric field is saved. The transformer low pressure alternating current side is connected the copper bar with the dc-to-ac converter side and is adopted the copper bar protection casing protection, and it is big to exchange connection (copper) row protection casing 10 through insulating electrical distance, guard shield intensity, and water-proof effects is good, the radiating effect is good, the protection level is high, the convenient to detach protection casing of installation maintenance. The copper bar with large heat dissipation capacity and the inverter are placed in different chambers, so that a large amount of heat generated in one chamber is effectively reduced, and the comprehensive efficiency of the inverter is greatly improved.

The lifting shaft 12 of the integrated machine adopts a structure of extending out of the short edge of the base and the inclined strut, so that the width of the base is reduced, the cost is saved, a simple straight-line-shaped lifting beam can be adopted for lifting, a complex H-shaped special lifting beam is omitted, the lifting is simpler, more convenient and faster, the manufacturing cost and the transportation cost are saved, and the lifting and the falling are convenient.

Four all-in-one machine grounding terminals 14 are arranged on the front side and the rear side of the base, and are symmetrically arranged in pairs; the outer left and right sides of the inverter are an alternating current side door and a direct current side door respectively, and the bottom of the inverter extends into the low-voltage direct current incoming cable 11.

The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The photovoltaic outdoor inverter and step-up transformer integrated all-in-one machine comprises a high-low pressure chamber, a transformer and an inverter, wherein the high-low pressure chamber, the transformer and the inverter are respectively and fixedly arranged on a base, the photovoltaic outdoor inverter and step-up transformer integrated all-in-one machine is characterized in that the transformer is arranged on one side of the high-low pressure chamber, a high-voltage cable, a busbar, a high-voltage sensor, a high-voltage fuse, a high-voltage arrester and a high-voltage sleeve are arranged in the high-low pressure chamber, the high-voltage cable is vertically and fixedly arranged in the high-low pressure chamber, the upper part of the high-voltage cable is fixedly connected with one end of the busbar, the lower part of the high-voltage cable penetrates through the bottom of the high-pressure chamber to be connected with an external main power grid, the high-voltage sensor is, the other end of the high-voltage arrester is connected with the high-voltage fuse through a lead, one end of the high-voltage arrester is connected with the busbar through the lead, and the other end of the high-voltage arrester penetrates through the high-low voltage chamber and is fixed on the outer side of the transformer; the inverter is outdoor, the low-voltage alternating current side of the transformer and the alternating current side of the inverter are connected with a copper bar which is protected by a copper bar protective cover, and the copper bar is placed in the inverter compartment.

2. The photovoltaic outdoor inverter/booster transformer integrated all-in-one machine as claimed in claim 1, wherein a hanger shaft is arranged on a short side of the base, and the hanger shaft is lifted by a linear hanger beam.

3. The photovoltaic outdoor inverter/booster transformer integrated all-in-one machine as claimed in claim 1, wherein an ac side door and a dc side door are respectively arranged on the outer left side and the outer right side of the inverter, and a low voltage dc incoming cable extends into the bottom of the inverter.

4. The photovoltaic outdoor inverter and booster transformer integrated all-in-one machine as claimed in any one of claims 1-3, wherein the transformer is an S11 oil-immersed transformer.