CN215870897U

CN215870897U - Intelligent super dual-power instantaneous switching integrated device

Info

Publication number: CN215870897U
Application number: CN202121451088.0U
Authority: CN
Inventors: 王子琦; 臧立宏; 方涛; 刘凯; 佘彦杰; 马晓飞; 王克文; 白思静
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-02-18
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to an intelligent super dual-power instantaneous switching integrated device which comprises a first power input switch, a second power input switch, a first intelligent IGBT rectification power unit, a second intelligent IGBT rectification power unit, an intelligent control unit, an intelligent IGBT inversion power unit, an intelligent direct current bus system integrated unit, a first intelligent static switch integrated unit, a second intelligent static switch integrated unit, an intelligent synchronous integrated control unit, a first output switch, a second output switch, a first intelligent standby channel integrated automatic control unit, a second intelligent standby channel integrated automatic control unit, a first intelligent standby channel switch, a second intelligent standby channel switch, an intelligent alternating current distribution integrated output unit, a driving and protecting integrated unit module and a DSP central integrated control unit module. The utility model has the advantages of short switching time and zero millisecond switching.

Description

Intelligent super dual-power instantaneous switching integrated device

Technical Field

The utility model relates to the field of power supply and distribution circuit devices, in particular to an intelligent super dual-power instantaneous switching comprehensive device.

Background

Currently, a dual power switching device mainly includes an STS static transfer switch device and an ATS static transfer switch device.

An STS (Static Transfer Switch) is an automatic switching system for the alternative power supply, and in a normal working state, when a main power supply is in a normal voltage range, a load is always connected to the main power supply. When the main power supply fails, the load is automatically switched to the standby power supply, and after the main power supply is recovered to be normal, the load is automatically switched to the main power supply. The STS Static Transfer Switch (Static Transfer Switch) adopts a Break before Make (Break before Make) switching mode, so that switching between different input power supplies can be realized, and double-bus power supply is provided for a single power supply load.

The STS static transfer switch mainly comprises an intelligent control panel, a high-speed silicon controlled rectifier and a circuit breaker, and the standard switching time of the STS static transfer switch is 10 ms. The power supply device can reliably supply power to the load, and simultaneously can ensure the safety of the STS during different-phase switching. Basic applications of STS include automation systems in the power industry, power systems in the petrochemical industry, computer and telecommunications centers, building automation and security systems, and other equipment sensitive to power outages.

Another kind of dual power switching device ats (automatic Transfer switch) automatic Transfer switch. ATS is mainly used in emergency power systems to automatically switch load circuits from one power supply to another (backup) power supply switching appliance to ensure continuous and reliable operation of critical loads. The ATS is a mechanical structure, a contactor or a circuit breaker is used as a switching execution component, and a secondary circuit consisting of an intermediate relay or a logic control module is used for switching functions to complete control functions. Meanwhile, if the load is heavy, the switching time is relatively long, and is more than 100 milliseconds, which causes the load to be powered off.

The utility model has the following patent: a DC double-power transfer switch (application number: CN201510030800.2) for an inverter power supply discloses a double-power transfer switch, two groups of DC power supplies are respectively connected with DC bus capacitors of the inverter power supply through respective input EMI filters and transfer units, the two groups of transfer units have the same structure and respectively comprise two circuit breakers, two contactors, an IGBT insulated gate bipolar transistor and a diode, the advantages of small ATS conduction loss and short STS switching time are fully utilized, the IGBT and the contactors are connected in parallel for use, the IGBT works during transfer, and the contactors are conducted after transfer is completed, so that the rapid transfer is ensured, the heat dissipation problem of the IGBT is solved, and the efficiency of the device is improved; however, in the structure of the transfer switch, the IGBT module only functions when switching, the standby power supply is normally in an idle state, and it is difficult to ensure that the standby power supply can be in a normal state when the main power supply fails, and the standby power supply does not necessarily function.

Therefore, further research on the dual power switching device is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intelligent super dual-power instantaneous switching comprehensive device which can provide power for a load when commercial power alternating current fails and one of dual power fails, so that the safety and the reliability of electric equipment are guaranteed.

In order to achieve the purpose of the utility model, the utility model provides an intelligent super dual-power instantaneous switching integrated device, which comprises a first power input switch, a second power input switch, a first intelligent IGBT rectification power unit, a second intelligent IGBT rectification power unit, an intelligent control unit, an intelligent IGBT inversion power unit, an intelligent direct current bus system integrated unit, a first intelligent static switch integrated unit, a second intelligent static switch integrated unit, an intelligent synchronous integrated control unit, a first output switch, a second output switch, a first intelligent standby channel integrated automatic control unit, a second intelligent standby channel integrated automatic control unit, a first intelligent standby channel switch, a second intelligent standby channel switch, an intelligent alternating current distribution integrated output unit, a driving and protecting integrated unit module and a DSP central integrated control unit module;

an external first power supply is connected with the first intelligent IGBT rectification power unit through the first power supply input switch, an external second power supply is connected with the second intelligent IGBT rectification power unit through the second power supply input switch, the first intelligent IGBT rectification power unit and the second intelligent IGBT rectification power unit are respectively connected to the intelligent control unit, the intelligent direct-current bus system comprehensive unit and the driving and protecting comprehensive unit module, and the intelligent direct-current bus system comprehensive unit is connected with the driving and protecting comprehensive unit module; the intelligent direct current bus system comprehensive unit is connected with the intelligent IGBT inversion power unit, and the intelligent IGBT inversion power unit is respectively connected with the driving and protection comprehensive unit module, the first intelligent static switch comprehensive unit, the intelligent synchronous comprehensive control unit and the first intelligent standby channel comprehensive automatic control unit; the DSP central integrated control unit module is respectively connected with the intelligent control unit, the first intelligent standby channel integrated automatic control unit, the second intelligent standby channel integrated automatic control unit and the intelligent synchronous integrated control unit; the first intelligent static switch synthesis unit is respectively connected with the first intelligent standby channel switch, the first intelligent standby channel synthesis automatic control unit and the first output switch, the first intelligent standby channel switch is connected with an external first power supply, the second intelligent static switch synthesis unit is respectively connected with the second intelligent standby channel switch, the second intelligent standby channel synthesis automatic control unit and the second output switch, and the second intelligent standby channel switch is connected with an external second power supply; the first output switch and the second output switch are respectively connected to the intelligent alternating current distribution comprehensive output unit.

Furthermore, a first manual standby channel switch is arranged between the external first power source and the intelligent alternating-current power distribution comprehensive output unit, and a second manual standby channel switch is arranged between the external second power source and the intelligent alternating-current power distribution comprehensive output unit.

Furthermore, the second intelligent IGBT rectification power unit is connected to the auxiliary intelligent IGBT inversion power unit after passing through the intelligent direct-current bus system comprehensive unit, and the auxiliary intelligent IGBT inversion power unit is controlled by the intelligent synchronous comprehensive control unit and is simultaneously connected to the second intelligent standby channel comprehensive automatic control unit.

Furthermore, an intelligent charging and discharging control unit module is connected to the intelligent direct current bus system comprehensive unit, a super capacitor energy storage unit module is connected to the intelligent charging and discharging control unit module, and the DSP central comprehensive control unit module controls the intelligent charging and discharging control unit module.

Because a new circuit system architecture is formed in an innovative way, and a new technical mode of a dual-power technology is formed by using a new method, a new idea and a new technical path, compared with the prior art, the intelligent super dual-power instantaneous switching comprehensive device has the following advantages:

(1) the switching time is short, and zero millisecond switching is realized;

(2) meanwhile, the voltage sag control function is achieved;

(3) the device has a large power range, and can meet the requirements of process equipment in the manufacturing field;

(4) the device has the function of alternating current support;

(5) when an extreme state that two power supplies are powered off simultaneously occurs, the emergency power supply system has a short-time emergency power supply function, the power supply time can be designed according to the load and related process requirements, and the emergency power supply system is particularly suitable for 110KV transformer substations, intelligent manufacturing, petrochemical industry, electric power industry and chip manufacturing industry to guarantee power supply safety and personal safety.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an intelligent super dual power supply instantaneous switching integrated device according to the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the intelligent super dual power supply instantaneous switching integrated device of the present invention;

fig. 3 is a schematic structural diagram of another embodiment of the intelligent super dual power supply instantaneous switching integrated device according to the present invention.

Detailed Description

The utility model is further described below with reference to the following figures and specific examples.

As shown in FIG. 1, the intelligent super dual power supply instantaneous switching integrated device of the present invention comprises a first power input switch 1, a second power input switch 2, a first intelligent IGBT rectification power unit 3, a second intelligent IGBT rectification power unit 4, an intelligent control unit 5, an intelligent IGBT inversion power unit 6, an intelligent DC bus system integrated unit 7, a first intelligent static switch integrated unit 8, a second intelligent static switch integrated unit 9, an intelligent synchronous integrated control unit 10, a first output switch 11, a second output switch 12, a first intelligent standby channel integrated automatic control unit 13, a second intelligent standby channel integrated automatic control unit 14, a first intelligent standby channel switch 15, a second intelligent standby channel switch 16, a first manual standby channel switch 17, a second manual standby channel switch 18, an intelligent AC integrated output unit 19, a driving and protecting integrated unit module 20 and a DSP central integrated control unit module 21;

an external first power supply is connected with a first intelligent IGBT (insulated gate bipolar transistor) rectification power unit 3 through a first power supply input switch 1, an external second power supply is connected with a second intelligent IGBT rectification power unit 4 through a second power supply input switch 2, the first intelligent IGBT rectification power unit 3 and the second intelligent IGBT rectification power unit 4 are respectively connected to an intelligent control unit 5, an intelligent direct-current bus system comprehensive unit 7 and a driving and protecting comprehensive unit module 20, and the intelligent direct-current bus system comprehensive unit 7 is connected with the driving and protecting comprehensive unit module 20; the intelligent direct current bus system comprehensive unit 7 is connected with the intelligent IGBT inversion power unit 6, and the intelligent I GBT inversion power unit 6 is respectively connected with the driving and protection comprehensive unit module 20, the first intelligent static switch comprehensive unit 8, the intelligent synchronous comprehensive control unit 10 and the first intelligent standby channel comprehensive automatic control unit 13; the DSP central integrated control unit module 21 is respectively connected with the intelligent control unit 5, the first intelligent standby channel integrated automatic control unit 13, the second intelligent standby channel integrated automatic control unit 14 and the intelligent synchronous integrated control unit 10; the first intelligent static switch synthesis unit 8 is respectively connected with a first intelligent standby channel switch 15, a first intelligent standby channel synthesis automatic control unit 13 and a first output switch 11, the first intelligent standby channel switch 15 is connected with an external first power supply, the second intelligent static switch synthesis unit 9 is respectively connected with a second intelligent standby channel switch 16, a second intelligent standby channel synthesis automatic control unit 14 and a second output switch 12, and the second intelligent standby channel switch 16 is connected with an external second power supply; the first output switch 11 and the second output switch 12 are respectively connected to the intelligent alternating current distribution comprehensive output unit 19; the first manual standby channel switch 17 is connected with an external first power supply and the intelligent alternating current distribution comprehensive output unit 19, and the second manual standby channel switch 18 is connected with an external second power supply and the intelligent alternating current distribution comprehensive output unit 19.

In the above embodiment, the use method of the present invention is: an external first power supply and an external second power supply are respectively connected to the first intelligent IGBT rectification power unit 3 and the second intelligent IGBT rectification power unit 4, two groups of external power supplies are started simultaneously, external three-phase power is input to the intelligent direct-current bus system comprehensive unit 7 after being rectified, the three-phase power is output to the first intelligent static switch comprehensive unit 8 through the intelligent IGBT inversion power unit 6, and the three-phase power is output to a load through the intelligent alternating-current power distribution comprehensive output unit 19. When one of the two external power supplies fails, the power of the intelligent IGBT rectification power unit on one side of the external power supply with normal function is doubled, the voltage input into the intelligent direct-current bus system comprehensive unit 7 is guaranteed to be unchanged, the output voltage of the device is kept stable, the normal operation and stable work of the load are guaranteed, and when the power supply with failure and voltage loss is restored, the device is automatically switched to the normal working state that the first intelligent IGBT rectification power unit 3 and the second intelligent IGBT rectification power unit 4 are electrified and operated at the same time; when in maintenance, the first power input switch 1 and the second power input switch 2, the first output switch 11, the first intelligent standby channel switch 15, the second output switch 12 and the second intelligent standby channel switch 16 are disconnected, then the first manual standby channel switch 17 or the second manual standby channel switch 18 is closed, and an external first power or an external second power directly supplies power to the intelligent alternating current power distribution comprehensive output unit 19 to be output to a load; in the using process, if the intelligent IGBT inversion power unit 6 suddenly breaks down, the intelligent synchronous integrated control unit 10 and the first intelligent standby channel integrated automatic control unit 13 cooperate to start the corresponding static switch in the first intelligent static switch integrated unit 8, and one path of external power supply directly supplies power to the intelligent alternating current distribution integrated output unit 19 through the first output switch 11 and the first intelligent standby channel switch 15 which are always in a closed working state.

In another embodiment, as shown in fig. 2, the second intelligent IGBT rectification power unit 4 is connected to the auxiliary intelligent IGBT inversion power unit 6.1 through the intelligent dc bus system integration unit 7, and the auxiliary intelligent IGBT inversion power unit 6.1 is controlled by the intelligent synchronous integrated control unit 10 and is connected to the second intelligent standby channel integrated automatic control unit 14; under the condition, the intelligent IGBT inversion power unit 6 and the auxiliary intelligent IGBT inversion power unit 6.1 respectively bear 50% of power in normal use, and if one of the intelligent IGBT inversion power unit and the auxiliary intelligent IGBT inversion power unit fails, the other intelligent IGBT inversion power unit can also ensure normal use of the system.

In the embodiment shown in fig. 3, the intelligent dc bus system comprehensive unit 7 is further connected with an intelligent charging and discharging control unit module 22, the intelligent charging and discharging control unit module 22 is connected with a super capacitor energy storage unit module 23, the DSP central comprehensive control unit module 21 controls the intelligent charging and discharging control unit module 22, during normal use, the external power supply charges the super capacitor energy storage unit module 23, if the external power supply is suddenly powered off for all two paths, the super capacitor energy storage unit module 23 discharges to instantly switch the comprehensive device for use of the intelligent super dual power supply, and the whole device is guaranteed to normally supply power to a load within a preset certain time.

In addition, the current, voltage, temperature sensor unit module 24 and the like are generally connected to the DSP central integrated control unit module 21. The working voltage range of the utility model can be 380V of three phases, 10KV of three phases and 27.5KV of single phase.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An intelligent super dual-power instantaneous switching integrated device is characterized by comprising a first power input switch, a second power input switch, a first intelligent IGBT rectification power unit, a second intelligent IGBT rectification power unit, an intelligent control unit, an intelligent IGBT inversion power unit, an intelligent direct current bus system integrated unit, a first intelligent static switch integrated unit, a second intelligent static switch integrated unit, an intelligent synchronous integrated control unit, a first output switch, a second output switch, a first intelligent standby channel integrated automatic control unit, a second intelligent standby channel integrated automatic control unit, a first intelligent standby channel switch, a second intelligent standby channel switch, an intelligent alternating current distribution integrated output unit, a driving and protecting integrated unit module and a DSP central integrated control unit module;

2. The intelligent super dual-power instantaneous switching integrated device as claimed in claim 1, wherein a first manual standby channel switch is provided between an external first power source and the intelligent ac power distribution integrated output unit, and a second manual standby channel switch is provided between an external second power source and the intelligent ac power distribution integrated output unit.

3. The intelligent super dual-power instantaneous switching integrated device as claimed in claim 1, wherein the second intelligent IGBT rectification power unit is connected to an auxiliary intelligent IGBT inversion power unit through the intelligent dc bus system integrated unit, and the auxiliary intelligent IGBT inversion power unit is controlled by the intelligent synchronous integrated control unit and is connected to the second intelligent standby channel integrated automatic control unit.

4. The intelligent super dual-power instantaneous switching integrated device as claimed in claim 1, wherein an intelligent charging and discharging control unit module is connected to the intelligent direct current bus system integrated unit, a super capacitor energy storage unit module is connected to the intelligent charging and discharging control unit module, and the intelligent charging and discharging control unit module is controlled by the DSP central integrated control unit module.