CN209104596U - A kind of large capacity photovoltaic power generation is become with case - Google Patents

Abstract

The utility model discloses a kind of large capacity photovoltaic power generation casees to become, integral layout is mu character shape, including be from left to right sequentially arranged low-pressure chamber, transformer room, middle pressure chamber, low-pressure chamber, middle pressure chamber use the container structure of closed structure, its wall is provided with heat exchanger, transformer room is unenclosed construction, and the low pressure phase bushings of transformer are arranged on transformer left side width direction, and medium-tension bushing is arranged in the right end of length direction；Middle pressure cabinet uses CCV or CVC all-insulation inflation cabinet, the spacing board of transformer room and low-pressure chamber is provided with low pressure interface channel, low pressure connecting copper bar connection low-voltage cabinet and transformer are installed in the channel, the modularized design and transport of device realization product, with structurally reasonable compact, performance safety is reliable, good appearance, it is practical, overhaul convenient feature.

Description

A kind of large capacity photovoltaic power generation is become with case

Technical field

The utility model relates to field of new energy generation transformers, more particularly to a kind of large capacity photovoltaic power generation case Become.

Background technique

In recent years, with the continuous decline of solar cell module and corollary equipment manufacturing cost and relevant policies increasingly at Ripe, solar power generation installed capacity speedup is swift and violent, and photovoltaic power generation is more and more each by the world as a kind of clean reproducible energy The attention of state.Existing photovoltaic power generation is as follows with preassembled transformer station main feature:

1, single module installed capacity is little, and existing country's photovoltaic generation unit installed capacity is mostly in 2.8MW hereinafter, same The mating booster apparatus that capacity uses is more, large capacity photovoltaic power generation preassembled transformer station market or blank at home, still The photovoltaic power generation project single module installed capacity that foreign countries newly plan is mostly in 5MW or more；

2, middle pressure relaying configuration is of less demanding, and existing case becomes medium voltage side and on-load switch-fuse is mostly used to realize transformation The protection of device, while middle pressure realizes the diversification connection type of cable run, integral product construction standard journey using busbar connector Spend it is low, face severe use environment, adaptability is poor, and application requirement is not achieved in intensity, degree of protection.

Summary of the invention

Become market trend to meet photovoltaic case, solves existing photovoltaic case and become existing problem above, the utility model It provides a kind of large capacity photovoltaic power generation to be become with case, reasonable in design, the protective performances such as intensity, sealing, heat dissipation are high, maintenance side Just, application environment range is wide.

For achieving the above object, technical solution adopted in the utility model are as follows:

A kind of large capacity photovoltaic power generation is become with case, and integral layout is mu character shape, including is from left to right sequentially arranged in same Low-pressure chamber, transformer room, middle pressure chamber on pedestal, low-pressure chamber, middle pressure chamber use closed structure container structure, not with the external world Air communication, wall are provided with heat exchanger and exchange with progress heat outside case, and transformer room is unenclosed construction, top and side Wall is netted guard bar structure, and two low-voltage cabinets are configured in low-pressure chamber, oil-immersed transformer is configured in transformer room, is matched in middle pressure chamber Middle pressure cabinet is set, the low pressure phase bushings of transformer are arranged on transformer left side width direction, and medium-tension bushing is arranged in length side To right end；Transformer and middle pressure cabinet pass through cable connection, and all-insulation cable head is arranged at connecting cable, and middle pressure cabinet uses CCV Or CVC all-insulation inflation cabinet, the spacing board of transformer room and low-pressure chamber are provided with low pressure interface channel, are equipped in the channel low Press connecting copper bar connection low-voltage cabinet and transformer.

Oil-immersed transformer is configured in transformer room, functionally transformer capacity is oily for double divisions of 5000kVA or more Immersion transformer；The width of transformer controls within 2.3m, while radiating fin of transformer open type is arranged, whole ventilation and heat Effect is good, is conducive to the stable operation of transformer.

Middle pressure cabinet includes that a breaker and two on-load switches are arranged in parallel, and can interpenetrate, can meet change simultaneously The connection of ring power network of depressor protection and route, medium voltage side use all insulation, full-shield, tangible elbow-type silicon rubber all-insulation cable Head, it can be ensured that the safety operation of medium voltage side, relative atmospheric insulation cabinet have greatly reduced the outer dimension of product.

Low-voltage cabinet top is total frame circuit breaker, and lower part is the two rows of back-to-back arrangements of inlet wire breaker of plastic casing, is had access to 16 road inlet wire cables, while case varying signal acquisition device is equipped in cabinet realize remote signalling, telemetering that background system becomes case, distant Control function.

Mesolow room uses sealed container structure, guarantees that internal temperature in the range of requiring, becomes by heat exchanger Depressor top and two sides are netted guardrail, play protection and good heat dissipation effect.

Transformer room and low-pressure chamber partition are provided with low pressure interface channel, and low pressure connecting copper bar difference is equipped in the channel It is connect with the low-tension bushing of the connecting terminal of low-voltage cabinet and transformer, the external inflow that electric energy becomes from case passes through low-voltage circuit breaker Into, then by the copper bar in low pressure interface channel, the raw pressure of inflow transformer enters in 35kV using high pressure connecting cable and presses Electric energy is finally sent into electric system by cabinet.

The utility model has the following beneficial effects: optimizing integral arrangement, middle lowboy and transformer arrangement are at one 20 In forty equivalent unit 40 shell, radiating fin of transformer open type arrangement, middle pressure is connected using all-insulation cable head, and low-pressure chamber is using envelope Closed walk connection, realize the modularized design and transport of product, have it is structurally reasonable compact, performance safety is reliable, good appearance, It is practical, overhaul convenient feature；Heat-exchange device is mounted on the wall of mesolow room, the device only have cabinet it is inside and outside into The exchange of row heat, it is inside and outside to also ensure cabinet to guarantee that mesolow room degree of protection is at least up to IP54 without air exchange Interior temperature is in the range of control.

Detailed description of the invention

Fig. 1 is that this practical large capacity photovoltaic power generation case becomes main view.

Fig. 2 is that this practical large capacity photovoltaic power generation case becomes rearview.

Fig. 3 is that this practical large capacity photovoltaic power generation case becomes top view.

Specific embodiment

Large capacity photovoltaic power generation as shown in drawings is become with case, and integral layout is mu character shape, including from left to right successively cloth Low-pressure chamber on same pedestal, transformer room, middle pressure chamber are set, low-pressure chamber, middle pressure chamber use the container structure of closed structure, It is not connected to outside air, wall is provided with heat exchanger 1 and exchanges with progress heat outside case, and transformer room is open type knot Structure, top and side wall are netted guard bar structure, and two low-voltage cabinets 2 are configured in low-pressure chamber, configure oil immersed type transformation in transformer room Device 3 presses cabinet 4 in middle pressure chamber in configuration, the low pressure phase bushings of transformer 3 are arranged on 3 left side width direction of transformer, middle pressure Casing is arranged in the right end of length direction；Transformer 3 and middle pressure cabinet 4 pass through cable connection, setting all insulation electricity at connecting cable Cable end 5, middle pressure cabinet 4 use CCV or CVC all-insulation inflation cabinet, and transformer room is provided with low pressure with the spacing board of low-pressure chamber and connects Channel 6 is equipped with low pressure connecting copper bar 7 in the channel and connects low-voltage cabinet 2 and transformer 3.

The double division oil-immersed transformers of 3 uses of transformer >=5000kVA improve radiator structure, are low on the left of transformer 3 Pressure chamber, low-pressure chamber configure two sides incoming line cabinet, and every face can install the breaker of plastic casing of 16 250A, meet 16 road long cable section of ingoing line need It asks, mating data information acquisition device in low-voltage cabinet, realizes the monitoring to entire preassembled transformer station.It is middle pressure on the right side of transformer Room configures one group of CCV(or CVC) protection and connection of ring power network of the all-insulation inflation cabinet realization to transformer, cabinet is using container Structure, and low room is equipped with heat-exchange device in, has good intensity and sealing effect.

Thread casing is extruded in transformer 3 and uses all insulation casing, and the medium voltage side connecting cable of connection is all made of all insulation, complete Shielding, tangible elbow-type silicone rubber for cable head, it is ensured that on high-tension side safety operation, the advantage of relative atmospheric insulation cabinet are compressions The outer dimension of product；Transformer low voltage outlet casing tube is arranged in width direction, can be convenient by low pressure connecting copper bar It is connected as one with low-pressure chamber；Transformer uses compact structure simultaneously, and width controls in 2.3m, avoids size ultra-wide pair The influence of Product transport.

Transformer upper header is reticular structure in container, and heat dissipation well is met while can playing protective action Effect, transformer two sides are protected using protective net.7 cabling of transformer low voltage connecting copper bar is convenient, and installs in outside There is closed channel.Whole preassembled transformer station has structurally reasonable compact, and performance safety is reliable, and good appearance, utility function is strong, Overhaul convenient feature.

Intelligent large capacity photovoltaic power generation preassembled transformer station shape is matched with 20 forty equivalent unit 40s, and overall structure has excellent Good dust seal effect, degree of protection is up to IP54, while product cabinet is equipped with the standard requirements of domestic and international land transportation and sea-freight, Product is suitable for domestic and international photovoltaic project.

The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill of technical field For personnel, without departing from the principle of this utility model, several improvement can also be made, wound is not being paid in these improvement It also should be regarded as the protection scope of the utility model under the premise of the property made labour.

Claims (4)

1. a kind of large capacity photovoltaic power generation is become with case, characterized in that integral layout is mu character shape, including is from left to right sequentially arranged Low-pressure chamber, transformer room, middle pressure chamber on same pedestal, low-pressure chamber, middle pressure chamber use the container structure of closed structure, no It is connected to outside air, wall is provided with heat exchanger and exchanges with progress heat outside case, and transformer room is unenclosed construction, top Portion and side wall are netted guard bar structure, and two low-voltage cabinets are configured in low-pressure chamber, configure oil-immersed transformer, middle pressure in transformer room Cabinet is pressed in indoor configuration, the low pressure phase bushings of transformer are arranged on transformer left side width direction, and medium-tension bushing is arranged in The right end of length direction；Transformer and middle pressure cabinet pass through cable connection, all-insulation cable head are arranged at connecting cable, middle pressure cabinet is adopted With CCV or CVC all-insulation inflation cabinet, the spacing board of transformer room and low-pressure chamber is provided with low pressure interface channel, pacifies in the channel Low-voltage cabinet and transformer are connected equipped with low pressure connecting copper bar.

2. large capacity photovoltaic power generation according to claim 1 is become with case, characterized in that configure oil immersed type in transformer room and become Depressor, functionally transformer capacity are double division oil-immersed transformers of 5000kVA or more.

3. large capacity photovoltaic power generation according to claim 1 is become with case, characterized in that middle pressure cabinet include breaker and Two on-load switches are arranged in parallel.

4. large capacity photovoltaic power generation according to claim 1 is become with case, characterized in that low-voltage cabinet top is total frame open circuit Device, lower part are the two rows of back-to-back arrangements of inlet wire breaker of plastic casing, have access to 16 road inlet wire cables, while case change is equipped in cabinet Signal pickup assembly.