CN204885964U - A photovoltaic box transformer with inverter boost function - Google Patents

Abstract

The utility model discloses a photovoltaic case becomes with contravariant function of stepping up, box including hollow structure, the inner space of box divide into hyperbaric chamber, transformer room and low -pressure chamber, be provided with high tension switchgear in the hyperbaric chamber, be provided with the transformer in the transformer room, be provided with alternating current power distribution cabinet, dc -to -ac converter, DC distribution cabinet and temperature controller in the low -pressure chamber, the wind channel has been offered at the top of dc -to -ac converter, install the fan in the wind channel, temperature controller is connected with the fan electricity, the high -voltage board passes through the copper bar or the cable is connected with the transformer, the transformer passes through the copper bar and is connected with alternating current power distribution cabinet, alternating current power distribution cabinet passes through the copper bar and is connected with the dc -to -ac converter, the dc -to -ac converter passes through the copper bar and is connected with DC distribution cabinet electricity. This scheme can be with alternating current power distribution cabinet, dc -to -ac converter, and direct current cabinet and the simultaneous acquisition of transformer coherent signal realize uniting and adjustment pre -installation back at the interplant, whole integrated computer lab send to the project on -the -spot only need to insert input, outgoing line can, shortened photovoltaic power plant's construction cycle greatly.

Description

A photovoltaic box transformer with inverter boost function

technical field

The utility model relates to the technical field of photovoltaic box-type substations, in particular to a photovoltaic box-type transformer with an inverter boost function.

Background technique

In recent years, with the rapid development of social science and technology, energy problems have become more and more severe. As we all know, solar energy, as a clean energy, occupies a pivotal position in new energy; at present, photovoltaic power generation equipment, often Both the substation and the inverter are used. In the existing technology, the photovoltaic grid-connected box-type substation and the inverter are generally placed separately, and the two are placed in their own housings, and the civil construction is carried out separately. Engineering, setting up foundations. However, due to the close relationship between the two parties, the equipment needs to be connected, debugged and communicated after it arrives at the site, which poses certain difficulties to the site operators on installation and other work, and the construction period is long; at the same time, due to the split configuration, civil works need to be carried out separately in the early stage of construction , resulting in unnecessary waste of manpower and material resources; in addition, due to the split configuration, the box substation requires two sets of ventilation systems, and the ventilation system is a simple single-phase axial flow fan exhaust, which has poor ventilation and heat dissipation effects.

Utility model content

The technical problem to be solved by the utility model is: to provide a photovoltaic box transformer with an inverter boost function. The photovoltaic box change not only has the function of inverter, but also has the function of boosting voltage; it also has the function of controlling the temperature of its internal working environment.

The technical scheme that the utility model takes for solving the technical problem existing in the known technology is:

A photovoltaic box transformer with an inverter boost function, comprising a box with a hollow structure; it is characterized in that: the inner space of the box is divided into a high-voltage room, a transformer room, and a low-voltage room; wherein: the high-voltage room is set There is a high-voltage switchgear; the transformer room is equipped with a transformer; the low-voltage room is equipped with an AC power distribution cabinet, an inverter, a DC power distribution cabinet and a temperature controller; An air duct; a fan is installed in the air duct, and the temperature controller is electrically connected to the fan; the high-voltage cabinet is connected to the transformer through a copper bar or a cable; the transformer is connected to the AC power distribution cabinet through a copper bar; the The AC power distribution cabinet is connected to the inverter through copper bars; the inverter is electrically connected to the DC power distribution cabinet through copper bars.

Further: a communication cabinet is also provided in the inverter room; the communication cabinet collects relevant parameters of the high-voltage switch cabinet, transformer, inverter, and AC/DC power distribution cabinet respectively.

The transformer is one of a dry-type transformer or an oil-immersed transformer.

The fan is an axial fan.

The box body is welded by cold-rolled steel plate and section steel with protection level up to IP54.

The advantages and positive effects that the utility model has are:

By adopting the above-mentioned technical scheme, the utility model can collect the signals of the inverter, the AC/DC cabinet and the transformer at the same time, and realize joint debugging and pre-installation in the factory. Yes, it can be connected to the background at the site, which greatly shortens the construction period of the power station; because it is placed in the same box station, the structure is compact, which can effectively save the floor area and reduce the civil work on the foundation; the special ventilation channel can be set according to The internal temperature realizes self-starting and self-stopping, reducing the internal temperature of the box station; the outer shell is welded by cold-rolled steel plate and section steel, with high overall strength and the protection level reaches IP54.

Description of drawings:

Fig. 1 is a top view of a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of a preferred embodiment of the present invention, which is mainly used to show the installation position and structure of the air duct;

Among them: 1. High voltage room; 2. Transformer; 3. AC power distribution cabinet; 4. Inverter; 5. Air duct; 6. DC power distribution cabinet; 7. Communication cabinet.

Detailed ways

In order to further understand the utility model content, characteristics and effects of the present utility model, the embodiments are exemplified, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Figures 1 to 2, a photovoltaic box transformer with an inverter boost function, including a hollow structure box; the inner space of the box is divided into a high-voltage room 1, a transformer room, and a low-voltage room; wherein: The high-voltage room 1 is provided with a high-voltage switch cabinet; the transformer room is provided with a transformer 2; the low-voltage room is provided with an AC power distribution cabinet 3, an inverter 4, a DC power distribution cabinet 6, and a temperature controller; The top of the inverter 4 is provided with an air duct 5 for heat dissipation; please refer to Fig. 2 for the installation position and structure of the air duct, a fan is installed in the air duct 5, and the temperature controller is electrically connected with the fan; Before, engineers need to set a threshold temperature in the temperature controller in advance, for example, the highest temperature is set to 80 degrees, the lowest temperature is set to -40 degrees, when the internal temperature of the box is higher than 80 degrees or lower than -40 degrees, the temperature The controller will send instructions in time; the high-voltage switchgear is electrically connected to the transformer 2 through copper bars or cables; the transformer 2 is electrically connected to the AC power distribution cabinet 3 through copper bars; the inverter 4 is connected to the DC The distribution cabinet 6 is electrically connected.

Further: a communication cabinet 7 is also provided in the inverter room; the communication cabinet 7 is electrically connected to the high-voltage switch cabinet, the transformer 2, the AC power distribution cabinet 3, the inverter 4, and the DC power distribution cabinet 6 respectively. The transformer is one of a dry-type transformer or an oil-immersed transformer. The fan is an axial fan. The box body is welded by cold-rolled steel plate and section steel with protection level up to IP54.

Adopting the technical solutions in the above preferred embodiments can reduce the workload of signal collection for on-site installation, and place the AC power distribution and the inverter in the same housing at the same time, greatly reducing the footprint of the original two boxes. In addition, since the box substation is equipped with a special ventilation channel, when the temperature reaches the set value, the fan is started in time, and the air is exhausted from the special ventilation channel to achieve the purpose of rapid exhaust and heat dissipation, and the effect is obvious.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (5)

1. a photovoltaic case with inversion boosting function becomes, and comprises the casing of hollow-core construction; It is characterized in that: the inner space of described casing is divided into hyperbaric chamber, transformer room and low-pressure chamber; Wherein: in described hyperbaric chamber, be provided with high-tension switch cabinet; Transformer is provided with in described transformer room; AC power distribution cabinet/AC distribution panel, inverter, DC power distribution cabinet and temperature controller is provided with in described low-pressure chamber; The air channel of heat transmission is offered at the top of described inverter; In described air channel, be provided with blower fan, described temperature controller is electrically connected with blower fan; Described high-voltage board is connected with transformer by copper bar or cable; Described transformer is connected with AC power distribution cabinet/AC distribution panel by copper bar; Described AC power distribution cabinet/AC distribution panel is connected with inverter by copper bar; Described inverter is electrically connected with DC power distribution cabinet by copper bar.

2. the photovoltaic case with inversion boosting function according to claim 1 becomes, and it is characterized in that: be also provided with communication counter in described inverter indoor; Described communication counter gathers the relevant parameter of high-tension switch cabinet, transformer, inverter, alternating current-direct current power distribution cabinet respectively.

3. the photovoltaic case with inversion boosting function according to claim 1 and 2 becomes, and it is characterized in that: described transformer is the one in dry-type transformer or oil-filled transformer.

4. the photovoltaic case with inversion boosting function according to claim 3 becomes, and it is characterized in that: described blower fan is axial flow blower.

5. the photovoltaic case with inversion boosting function according to claim 4 becomes, and it is characterized in that: described casing reaches the cold-rolled steel sheet of IP54 by degree of protection and shaped steel is welded.