Commercial power synchronous switching integrated control box of mobile power generation equipment

Abstract

The utility model provides a commercial power synchronous switching integrated control box which is arranged on mobile power generation equipment and comprises an upper box chamber, a middle box chamber and a busbar load junction box chamber. A synchronous control module is arranged in the upper box chamber, and a generator synchronous contactor, a generator main circuit breaker, a mains supply synchronous contactor and a current transformer are arranged in the middle box chamber; the synchronous control module and the generator synchronous contactor are connected with the diesel generator, the generator synchronous contactor is connected with the synchronous control module through a closing signal line and a feedback signal line, and the generator main circuit breaker is connected with the generator synchronous contactor. The commercial power synchronous switching integrated control box can be directly applied to mobile power generation equipment, can be used as a standby power supply for realizing commercial power synchronous switching during commercial power maintenance, is convenient to construct a synchronous switching system with commercial power, and is convenient and rapid in field operation, and field wiring operation is carried out according to a designed circuit during field construction.

Description

Technical Field

[0001] The utility model relates to the field of diesel power generation equipment, in particular to a mains power synchronous switching integrated control box for mobile power generation equipment. Background Art

[0002] Mobile power generation equipment (such as mobile diesel generators) can be widely used at construction sites, large gatherings, disaster relief sites, mines, nightlife venues, and other locations requiring temporary power supply at night. They meet the needs of today's large-scale, rapid urban development, enriching people's cultural life, mineral exploration and development, and other industrial and social needs. They can also serve as a backup power source during utility maintenance. Mobile diesel generators can be mounted on a vehicle frame like a container, or wheels can be installed under the mobile diesel generator chassis and moved to the maintenance site by a trailer. When utility power grid maintenance is required in a specific area, the mobile diesel generator can be conveniently connected to the utility grid as a backup power source, minimizing the impact of the maintenance on local users. Traditional mobile power generation equipment requires additional electrical components or modules, such as a synchronous controller, a utility synchronous contactor, and a current transformer, to connect to the mobile generator. Furthermore, connecting external cables to the mobile generator is complex, making on-site operation complicated and posing safety risks.

[0003] Therefore, it is necessary to provide a mobile generator integrated control box that can facilitate synchronous switching of the mobile generator and the mains during mains power line maintenance, while taking into account the ease of on-site operation and the safety of construction. Utility Model Content

[0004] In response to the application needs of existing technologies, the purpose of this utility model is to provide an integrated control box for the synchronous switching of mains power for mobile power generation equipment, which can facilitate the connection between the mobile power generation equipment and the mains cable during mains maintenance and realize functions such as frequency comparison, synchronous closing, and automatic adjustment of power generation output, making on-site construction easier.

[0005] Specifically, in order to achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] A mains synchronous switching integrated control box is provided on a mobile power generation device, the mobile power generation device includes a box body, a diesel generator is arranged inside the box body, the mains synchronous switching integrated control box is arranged on one side of the box body, and includes an upper box chamber, a middle box chamber and a busbar load connection box chamber; wherein the upper box chamber is provided with a synchronous control module, the middle box chamber is provided with a generator synchronous contactor, a generator main circuit breaker, a mains synchronous contactor and a current transformer, and the busbar load connection box chamber is provided with multiple busbar load terminals; the synchronous control module includes a working display screen, a generator working status key, a generator stop key, a generator Open / Close key, a manual operation key, a mains working status key, a mains Open / Close key and a generator start key; the synchronous control module and the generator synchronous contactor are connected to the diesel generator, the generator synchronous contactor and the synchronous control module are connected through a closing and feedback signal line, and the generator main circuit breaker is connected to the generator synchronous contactor; the mains input end is connected to the synchronous control module after passing through a synchronous sampling conversion switch.

[0007] Preferably, a first partition is provided between the upper box chamber and the middle box chamber, a second partition is provided between the middle box chamber and the busbar load connection box chamber, and a plurality of wire holes for cables to pass through are provided on the wall panel of the integrated control box and the first partition and the second partition.

[0008] More preferably, the mains synchronous contactor is connected to the mains input line, the mains synchronous contactor is connected to the synchronous sampling conversion switch, and is connected to the synchronous control module through the closing and feedback signal lines; the mains synchronous contactor and the output end line of the generator main circuit breaker are merged and connected to the terminal of the busbar load junction box room; a busbar parameter acquisition module is provided between the busbar load and the synchronous sampling conversion switch.

[0009] More preferably, in the mains synchronous switching integrated control box, a generator start knob switch is further provided, and the synchronous sampling conversion switch and the generator start knob switch are electrically connected to the synchronous control module.

[0010] More preferably, the synchronization control module is provided with a plurality of indicator lights corresponding to each button.

[0011] More preferably, the synchronization control module is further provided with a plurality of function indication modules, including an alarm indication module, a work abnormality warning indication module, and an operation indication module.

[0012] More preferably, the busbar parameter acquisition module is also integrated on the mobile diesel generator. When on-site maintenance is required, the staff can operate after connecting the wires according to the set circuit connection diagram; when the maintenance is completed, the cable is removed from the mobile diesel generator.

[0013] More preferably, a cable quick interface with a standardized structure is provided at the interface of each module.

[0014] More preferably, a first cover plate and a second cover plate are provided on the outside of the AC power synchronous switching integrated control box, the first cover plate corresponds to the upper box chamber and the middle box chamber; the second cover plate corresponds to the busbar load connection box chamber, and a gap is left under the second cover plate for the cables to pass through.

[0015] More preferably, a ventilation mesh plate is provided on the first cover plate, and a dust removal cloth is provided on the inner side of the ventilation mesh plate.

[0016] The utility model's mains synchronous switching integrated control box can be directly applied to mobile power generation equipment as a backup power source for realizing mains synchronous switching during mains maintenance. The integrated control box is provided with synchronization control modules, mains synchronous contactors, current transformers and other modules, which can conveniently construct a secondary or primary synchronous switching system with the mains. During on-site construction, on-site wiring operations are performed according to the designed circuit, which can realize synchronous switching of mains power supply and generator power supply during mains line maintenance, and on-site operation is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the present invention will become more apparent through the following detailed description in conjunction with the accompanying drawings, in which:

[0018] Figure 1 Shown is a structural schematic diagram of a mobile power generation device equipped with an integrated control box for synchronous switching of mains power according to the present invention (without a cover);

[0019] Figure 2 The figure shows the structure of the utility model of the utility power synchronous switching integrated control box;

[0020] Figure 3 The figure shows the circuit connection structure diagram of the utility model's mains synchronous switching integrated control box;

[0021] Figure 4 Shown is a structural schematic diagram of a mobile power generation device having a mains synchronous switching integrated control box of the present invention (with a cover). DETAILED DESCRIPTION

[0022] According to the purpose of the utility model and actual application needs, the utility model provides an integrated control box for synchronous switching of mains power, which can be directly installed on mobile power generation equipment to realize synchronous switching of mobile power generation equipment and mains power, so that when the mains power line is inspected and repaired, the mobile generator synchronous switching can be used to power the user's load, avoiding affecting the user's electricity consumption.

[0023] Combined with reference Figure 1 and Figure 2 The utility model is provided with a mains synchronous switching integrated control box 200 installed on a mobile power generation device. The mobile power generation device includes a box body 1, in which a diesel generator is arranged. The mains synchronous switching integrated control box 200 is arranged on one side of the box body 1. The integrated control box 200 includes an upper box chamber 201, a middle box chamber 202 and a busbar load connection box chamber 40; wherein the upper box chamber 201 is provided with a synchronous control module 100, and the middle box chamber 202 is provided with a generator synchronous contactor 22, a generator main circuit breaker 24, a mains synchronous contactor 12 and a current transformer 14, and a plurality of busbar load connection terminals 42 are provided in the busbar load connection box chamber 40; with reference to Figure 3 The synchronous control module 100 includes a working display screen 106, a generator working status key 120, a generator stop key 122, a generator Open / Close key 123, a manual operation key 125, a mains working status key 110, a mains Open / Close key 113 and a generator start key 112.

[0024] In a preferred embodiment, Figure 2 As shown, a first partition 204 is provided between the upper box chamber 201 and the middle box chamber 202, a second partition 205 is provided between the middle box chamber 202 and the busbar load connection box chamber 40, and a plurality of wire holes 203 for cables to pass through are provided on the wall panel of the integrated control box 2 and the first partition 204 and the second partition 205, so as to facilitate the routing of cables and keep the cables tidy to avoid confusion and misconnection of cables.

[0025] Combined with reference Figure 3 As shown, in the utility model, the utility model provides a mains synchronous switching integrated control box 200, wherein the synchronous control module 100 and the generator synchronous contactor 22 are connected to the diesel generator 20 in the mobile power generation equipment, and the generator synchronous contactor 22 is connected to the synchronous control module 100 through the closing and feedback signal lines, and the generator main circuit breaker 24 is connected to the generator synchronous contactor 22; the mains 10 input end is connected to the synchronous control module 100 after passing through the synchronous sampling conversion switch 30; a mains synchronous contactor 12 is provided on the mains 10 input line, and the mains synchronous contactor 12 is connected to the synchronous sampling conversion switch 30, and is connected to the synchronous control module 100 through the closing and feedback signal lines; the output end lines of the mains synchronous contactor 12 and the generator main circuit breaker 24 are merged and connected to the connection terminal of the busbar load connection box chamber 40; a busbar parameter acquisition module (not shown) is provided between the busbar load and the synchronous sampling conversion switch 30.

[0026] In the utility model of the utility power synchronous switching integrated control box 200, the synchronous control module 100 is used to receive data information and analyze it; send voltage and frequency control signals; output opening and closing instructions; output protection alarm instructions; monitor key parameters such as voltage, current, water temperature, and oil pressure; mobile power generation equipment generally uses a diesel generator, which can output reliable AC power for load use; the generator synchronous contactor 22 is controlled by the synchronous control module 100 to realize the on and off of the diesel generator output; the generator main circuit breaker 24 is a manual switch on the diesel generator output line, which is connected in series with the generator synchronous contactor. Through the manual switch, an additional safety guarantee is provided when the generator is disconnected; the synchronous sampling conversion switch 30 switches the sampling positions of different lines through the conversion switch, and transmits the sampling information to the synchronous control module. The synchronous control module determines the synchronization mode based on the sampling information.

[0027] Reference Figure 3 As shown, the utility power synchronous switching integrated control box 200 of the present invention is further provided with a generator start knob switch 102 , and the synchronous sampling conversion switch 30 and the generator start knob switch 102 are electrically connected to the synchronous control module 100 .

[0028] In another preferred embodiment, indicator lights 124 are provided corresponding to each button on the synchronization control module 100, which can facilitate staff to understand the working status of each module of the system and the current operating environment in real time, and avoid safety problems caused by misoperation.

[0029] In another preferred embodiment, the synchronization control module 100 is further provided with a plurality of function indication modules, such as an alarm indication module 103 , a work abnormality warning indication module 104 , an operation indication module 105 , and the like.

[0030] In another preferred embodiment, the busbar parameter acquisition module is also integrated into the mobile diesel generator. When on-site maintenance is required, personnel can simply connect the cables according to the pre-set circuit connection diagram and begin operation. Once maintenance is complete, the cables can be removed from the mobile diesel generator. In another even more preferred embodiment, standardized cable connectors are provided at the interfaces of each module to facilitate on-site wiring and removal operations. These connectors can be readily adapted from existing commercially available connectors.

[0031] Reference Figure 4 As shown, the outer side of the AC power synchronous switching integrated control box 200 of the present invention is provided with a first cover plate 206 and a second cover plate 207, the first cover plate 206 corresponds to the upper box chamber 201 and the middle box chamber 202; the second cover plate 207 corresponds to the busbar load connection box chamber 40, and a gap 208 is left below the second cover plate 207 for the cables to pass through.

[0032] In another preferred embodiment, a ventilation mesh plate 209 is provided on the first cover plate 206, and a dust-removing cloth is provided on the inner side of the ventilation mesh plate 209, which can not only dissipate heat from the internal electrical module, but also prevent dust from entering the interior of the integrated control box and causing damage to electronic components.

[0033] The utility model's mains synchronous switching integrated control box 200 can be directly applied to mobile power generation equipment as a backup power source for realizing mains synchronous switching during mains maintenance. The integrated control box is provided with synchronous control modules, mains synchronous contactors, current transformers and other modules, which can conveniently construct a secondary or primary synchronous switching system with the mains. During on-site construction, on-site wiring operations are performed according to the designed circuit, which can realize synchronous switching of mains power supply and generator power supply during mains line maintenance, and on-site operation is convenient and fast.

[0034] The present invention is not limited to the embodiments described. Those skilled in the art may make some modifications or changes without departing from the spirit or scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A city power synchronous switching integrated control box, which is installed on a mobile power generation device. The mobile power generation device includes a box body, in which a diesel generator is installed, characterized in that: The AC power synchronous switching integrated control box is arranged on one side of the box body, which includes an upper box chamber, a middle box chamber and a busbar load connection box chamber; wherein the upper box chamber is provided with a synchronous control module, the middle box chamber is provided with a generator synchronous contactor, a generator main circuit breaker, a AC power synchronous contactor and a current transformer, and the busbar load connection box chamber is provided with multiple busbar load terminals; the synchronous control module includes a working display screen, a generator working status key, a generator stop button, a generator Open / Close button, a manual operation button, a AC power working status key, a AC power Open / Close button and a generator start button; the synchronous control module and the generator synchronous contactor are connected to the diesel generator, the generator synchronous contactor and the synchronous control module are connected through a closing and feedback signal line, and the generator main circuit breaker is connected to the generator synchronous contactor; the AC power input end is connected to the synchronous control module after passing through a synchronous sampling conversion switch.

2. The integrated control box for synchronous switching of mains power according to claim 1, characterized in that: A first partition is provided between the upper box chamber and the middle box chamber, a second partition is provided between the middle box chamber and the busbar load connection box chamber, and a plurality of wire holes for cables to pass through are provided on the wall panel of the integrated control box and the first partition and the second partition.

3. The integrated control box for synchronous switching of mains power according to claim 1, characterized in that: The mains synchronous contactor is connected to the mains input line, connected to the synchronous sampling conversion switch, and connected to the synchronous control module through the closing and feedback signal lines; the mains synchronous contactor and the output end line of the generator main circuit breaker are merged and connected to the connection terminal of the busbar load connection box room; a busbar parameter acquisition module is provided between the busbar load and the synchronous sampling conversion switch.

4. The integrated control box for synchronous switching of mains power according to claim 3, characterized in that: In the mains synchronous switching integrated control box, a generator start knob switch, a synchronous sampling conversion switch and a generator start knob switch are also provided and are electrically connected to the synchronous control module.

5. The integrated control box for synchronous switching of mains power according to claim 1, characterized in that: The synchronous control module is provided with a plurality of indicator lights corresponding to each button.

6. The integrated control box for synchronous switching of mains power according to claim 5, characterized in that: The synchronous control module is also provided with a plurality of function indication modules, including an alarm indication module, a work abnormality warning indication module, and an operation indication module.

7. The integrated control box for synchronous switching of mains power according to claim 3, characterized in that: The busbar parameter acquisition module is also integrated on the mobile diesel generator. When on-site maintenance is required, the staff can operate after connecting the wires according to the set circuit connection diagram; when the maintenance is completed, the cables can be removed from the mobile diesel generator.

8. The integrated control box for synchronous switching of mains power according to claim 7, characterized in that: At the cable interface of each module, a standardized cable quick interface is provided.

9. The integrated control box for synchronous switching of mains power according to claim 1, characterized in that: The outer side of the mains synchronous switching integrated control box is provided with a first cover plate and a second cover plate, the first cover plate corresponds to the upper box chamber and the middle box chamber; the second cover plate corresponds to the busbar load connection box chamber, and a gap is left under the second cover plate for the cables to pass through.

10. The integrated control box for synchronous switching of mains power according to claim 9, characterized in that: The first cover plate is provided with a ventilation mesh plate, and a dust removal cloth is provided on the inner side of the ventilation mesh plate.

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