CN221447913U - Charging pile box transformer with intelligent compensation device - Google Patents

Abstract

The utility model discloses a charging pile box transformer with an intelligent compensation device, which comprises a shell, and a high-voltage unit, a transformer unit and a low-voltage unit which are arranged by an independent cabinet body, wherein the high-voltage unit comprises a high-voltage wire inlet cabinet, a high-voltage metering cabinet and a high-voltage wire outlet cabinet; the charging pile box transformer is built by a frame modular structure, an intelligent compensation device is further arranged, the VSC technology is adopted to achieve the effects of high response speed, instantaneous adjustment of reactive voltage of a power grid and the like, the charging pile box transformer can respond rapidly when a power system breaks down or fluctuates in load, voltage fluctuation is effectively restrained, the power grid is maintained to be stable, and the charging pile of new energy equipment is satisfied.

Description

Charging pile box transformer with intelligent compensation device

Technical Field

The utility model relates to the technical field of power equipment, in particular to a charging pile box transformer with an intelligent compensation device.

Background

In recent years, with the advent of various emerging industries, the application sites of the box transformer become diverse and complex. In particular, for the application of special places such as core business areas, green roads, urban roads, industrial parks and the like with the size and the price, higher requirements are provided for indexes such as appearance, safety, reliability and intellectualization of the box transformer substation, and the traditional box transformer substation is low in power supply reliability; a power distribution automation device cannot be additionally arranged; the functions are single, no energy storage device exists, and the urban demand with high standards at present cannot be completely met.

Along with the increasing popularization of new energy electric vehicles in China, the layout of charging piles needs to be continuously perfected, the perfection of power supply equipment is needed, a box-type transformer station is one of important equipment, an automobile charging pile box-type transformer station is a box-type transformer station which organically combines a high-voltage switch cabinet, a metering cabinet, a low-voltage switch cabinet, a direct-current charging cabinet and the like, and the box-type transformer station is compact in structure, safe and reliable, and realizes secondary integration of an automobile group charging system.

Disclosure of utility model

Aiming at the problems in the related art, the utility model provides the charging pile box transformer substation with the intelligent compensation device, the box transformer substation is subjected to modularized combination setting through the cabinet body arranged by the frame result, the intelligent compensation device is further arranged in the low-voltage compensation cabinet to improve the output stability of the box transformer substation, and the charging requirement of the charging pile of the new energy equipment is met.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take intelligent compensation device's fills electric pile case and becomes, includes the shell and sets up high-voltage unit, transformer unit and the low-voltage unit in the shell, every high-voltage unit, transformer unit and low-voltage unit all are provided with independent cabinet body, high-voltage unit includes high-voltage wire inlet cabinet, high-voltage metering cabinet and high-voltage wire outlet cabinet, transformer unit includes the transformer cabinet that both ends are connected high-voltage unit and low-voltage unit respectively, low-voltage unit includes low-voltage wire inlet cabinet, a plurality of low-voltage capacitance compensation cabinet and low-voltage wire outlet cabinet, set up condenser, compensation arrangement in the low-voltage capacitance compensation cabinet, be provided with frame type circuit breaker in the low-voltage wire inlet cabinet, be provided with a plurality of moulded case circuit breakers in the low-voltage wire outlet cabinet, and connect outside electric pile output.

As a further arrangement of the above solution, the compensation device is a voltage source converter for instantaneous regulation of the reactive voltage of the power grid, suppressing voltage fluctuations.

As a further setting of the scheme, the high-voltage metering cabinet is arranged between the high-voltage wire inlet cabinet and the high-voltage wire outlet cabinet and used for calculating and metering the electric quantity.

As a further arrangement of the scheme, the shell is also provided with a door opening interlocking assembly, the door opening interlocking assembly comprises an interlocking structure connected with the opening and closing door and a linkage piece, and the linkage piece is connected with a manual switch shaft of a main electric switch for mains supply access.

As a further setting of above-mentioned scheme, the interlocking structure includes the interlocking board of butt with the inclined plane cooperation of opening and shutting door, with interlocking board fixed connection's sliding plate and the spring spare that the elastic drive sliding plate reset, the spacing linkage piece circumference of sliding plate slip rotates, and it is used for spacing linkage piece rotation in order to keep the open-brake state of total electric brake after the door that opens and shuts.

As a further arrangement of the scheme, the plastic shell circuit breaker arranged in the low-voltage outlet cabinet is provided with a group of NM1-400H/3300 400A corresponding to each external charging pile, and each low-voltage outlet cabinet is also provided with a group of NM1-250H/3300 250A for an illumination circuit in the cabinet.

The beneficial effects are that: according to the charging pile box transformer, the internal arrangement of the box transformer is simplified through the frame modularized structural design, the double-layer modularized cabinet body assembling structure facilitates the production and assembly of the box transformer, the intelligent compensation device is arranged to improve the VSC technology of the voltage source converter, the charging stability of the charging pile of the new energy equipment is improved, the power supply and charging requirements of the new energy industrial equipment are met, and the box transformer has good market prospects in the scene application and adoption of the new energy charging pile.

Drawings

Fig. 1 is a schematic structural view of the box transformer of the present utility model.

Fig. 2 is a schematic block diagram of the distribution of the internal cabinets of the box transformer according to the utility model.

Fig. 3 is a schematic block diagram of the internal cabinet distribution and mounting element inventory of the box transformer of the present utility model.

Fig. 4 is a schematic diagram of an interlocking structure of the present embodiment.

Fig. 5 is an interlock structure diagram of the open/close door of the present embodiment.

Reference numerals: 1. a housing; 2. a linkage member; 3. an opening/closing door; 4. a interlock plate; 5. and a sliding plate.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. In addition, the embodiments of the present utility model and the features in the embodiments may be combined with each other without collision.

The transformer unit comprises a shell 1 and a high-voltage unit, a transformer unit and a low-voltage unit which are arranged in the shell 1, wherein each of the high-voltage unit, the transformer unit and the low-voltage unit is provided with an independent cabinet body, the high-voltage unit comprises a high-voltage incoming line cabinet G1, a high-voltage metering cabinet G2 and a high-voltage outgoing line cabinet G3 as shown in fig. 2-3, the transformer unit comprises transformer cabinets, two ends of the transformer cabinets are respectively connected with the high-voltage unit and the low-voltage unit, S13-M-1250KVA 10.5+/-5%/0.4KV Dyn11 is adopted, the low-voltage unit comprises a low-voltage incoming line cabinet D1, a plurality of low-voltage capacitor compensation cabinets D4 and D5 and a low-voltage outgoing line cabinet D2 and D3, a group of 1-400H/3300A is arranged relative to each external charging pile, a group of low-voltage outgoing line cabinet is further provided with a plastic shell circuit breaker arranged in the low-voltage outgoing line cabinet D2 and D3, and the low-voltage power supply circuit is further provided with a plurality of low-voltage power supply circuit breakers arranged in the low-voltage power supply cabinet 250, and the power supply circuit breakers are arranged in the group of the low-voltage power supply cabinet.

The arrangement of accessories and the number of accessories in the box transformer cabinet body of the embodiment is shown in fig. 3, and the high-voltage unit, the low-voltage unit and the transformer unit are arranged, the specification and the selected element model are adopted, wherein six groups of outlet units are arranged in each cabinet body according to actual requirements, the outlet units correspond to the external charging piles respectively, namely, the number of the charging piles of the box transformer connectable outside of the embodiment is 12, and when a certain charging pile or equipment fails, a plastic case breaker M1-400H/3300 400A which is independently arranged in each corresponding outlet unit can be closed according to a corresponding line by a worker, and other outlet units can still work normally and are convenient to use.

As a further setting of the scheme, the high-voltage metering cabinet is arranged between the high-voltage wire inlet cabinet and the high-voltage wire outlet cabinet and used for calculating and metering the electric quantity.

As a further setting of the above scheme, as shown in fig. 4-5, still be provided with the interlocking component that opens the door on the shell 1, include the interlocking structure and the linkage 2 of being connected with opening and shutting door 3, the manual switch axle of total electric brake that is used for the mains supply to insert is connected to the linkage 2, the interlocking structure includes the interlocking plate 4 with opening and shutting door 3 inclined plane cooperation butt, with the sliding plate 5 of interlocking plate 4 fixed connection and the spring part that elasticity drive sliding plate 5 reset, the sliding plate 5 slides spacing linkage 2 circumference and rotates, it is used for spacing linkage 2 rotation in order to keep the open-gate state of total electric brake after opening and shutting door 3 opens, through the setting of above-mentioned structure, the multiunit interlocking structure that sets up in this embodiment, the corresponding mechanical structure sliding plate 5 of opening and shutting door 3 that the corresponding of arbitrary a set of interlocking structure all can lead to lose spacing to produce the slip and form spacing to linkage 2, thereby make total brake unable closed, the inside circular telegram takes place electric power when the cabinet door does not close, also avoided forgetting the problem that the staff just leaves after closing.

Furthermore, the intelligent capacitor of the embodiment can also adopt a Voltage Source Converter (VSC) technology as required, the intelligent capacitor comprises a low-capacitance compensation cabinet and internal accessories as shown in fig. 3, and the charging efficiency of the intelligent capacitor meets the market demand through testing, but the intelligent capacitor is limited, the intelligent capacitor adopting the VSC technology is further arranged for improvement, and the Voltage Source Converter (VSC) technology of the prior art is adopted, so that the intelligent capacitor has high response speed and can realize instantaneous adjustment of reactive voltage of a power grid. When the power system breaks down or fluctuates in load, the system can respond rapidly, voltage fluctuation is effectively restrained, the power grid is maintained to be stable, the compensation device can be compatible with various types of power systems, seamless butt joint can be realized no matter the system is a traditional synchronous motor, an asynchronous motor or new energy electric equipment, and the intelligent capacitors of advanced technologies such as modern measurement and control, power electronics, network communication, automatic control, power capacitors and the like are integrated, the switching technology of a controller technology of the traditional reactive compensation device and a mechanical contactor or an electromechanical integrated switch of the traditional reactive compensation device is changed, and the huge and heavy structural mode of the traditional reactive compensation device is changed, so that the new generation low-voltage reactive compensation device has the characteristics of better compensation effect, smaller volume, lower power consumption, lower price, more cost saving, more flexible use, more convenient maintenance, longer service life and higher reliability, and is suitable for the higher requirements of the modern power grid on reactive compensation, and the quick charging function of the new energy equipment is better met by adopting the charging pile of the embodiment box.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1. The utility model provides a take intelligent compensation device's fills electric pile case and becomes, includes shell (1) and sets up high voltage unit, transformer unit and the low voltage unit in shell (1), its characterized in that: every high voltage unit, transformer unit and low voltage unit all are provided with independent cabinet body, the high voltage unit is including high voltage wire inlet cabinet, high voltage metering cabinet and high voltage outlet cabinet, the transformer unit includes the transformer cabinet that both ends connect high voltage unit and low voltage unit respectively, the low voltage unit includes low voltage wire inlet cabinet, a plurality of low voltage capacitance compensation cabinet and low voltage outlet cabinet, set up condenser, compensation arrangement in the low voltage capacitance compensation cabinet, be provided with frame-type circuit breaker in the low voltage wire inlet cabinet, be provided with a plurality of moulded case circuit breakers in the low voltage outlet cabinet, and connect outside electric pile output electric quantity that charges.

2. The charging pile box transformer with the intelligent compensation device according to claim 1, wherein: the compensation device is a voltage source converter for instantaneously adjusting reactive voltage of the power grid and inhibiting voltage fluctuation.

3. The charging pile box transformer with the intelligent compensation device according to claim 1, wherein: the high-voltage metering cabinet is arranged between the high-voltage wire inlet cabinet and the high-voltage wire outlet cabinet and is used for calculating and metering the electric quantity.

4. The charging pile box transformer with the intelligent compensation device according to claim 1, wherein: the novel electric switch is characterized in that the shell (1) is further provided with a door opening interlocking assembly, the novel electric switch comprises an interlocking structure connected with the opening and closing door (3) and a linkage piece (2), and the linkage piece (2) is connected with a manual switch shaft of a main electric switch for mains supply access.

5. The charging pile box transformer with the intelligent compensation device according to claim 4, wherein: the interlocking structure comprises an interlocking plate (4) in inclined fit and butt with the opening and closing door (3), a sliding plate (5) fixedly connected with the interlocking plate (4) and a spring piece for elastically driving the sliding plate (5) to reset, wherein the sliding plate (5) slides to limit the circumferential rotation of the linkage piece (2), and the interlocking structure is used for rotating the limit linkage piece (2) after the opening and closing door (3) is opened so as to keep the opening state of the total electric brake.

6. The charging pile box transformer with the intelligent compensation device according to claim 1, wherein: the plastic shell circuit breakers arranged in the low-voltage outlet cabinet are provided with a group of NM1-400H/3300 400A corresponding to each external charging pile, and each low-voltage outlet cabinet is internally provided with a group of NM1-250H/3300250A for an illumination circuit in the cabinet.