An automatic synchronizing device for a generator

Abstract

The utility model relates to the same period parallel operation technology field of generator, concretely for a kind of automatic synchronizing device for generator, including fixedly installed in the cover of box front, the side of cover is respectively fixedly installed with network electricity indicating lamp and local indicating lamp, the side of cover is respectively fixedly installed with synchronizing indicating lamp and closing indicating lamp, the rear side of box is fixedly installed with multiple wiring end, the side of cover is fixedly installed with frequency difference adjusting knob, the side of cover is fixedly installed with power switch, the side of cover is fixedly installed with output detection switch.In the utility model, the automatic synchronizing device of the present application detects the voltage amplitude, frequency value and phase difference value between the power grid and the generator set accurately, and when the three conditions are strictly met, the closing instruction is triggered immediately, achieving fast and non-impact parallel operation effect.

Description

Technical Field

[0001] This utility model relates to the field of generator synchronization and grid connection technology, specifically to an automatic synchronizing device for generators. Background Technology

[0002] With the development of power systems, network connections are becoming increasingly tight and capacity is increasing. When closing circuit breakers in power plants or substations, normal synchronization and grid connection are required. Normal synchronization and grid connection means that the systems (grid and generator) on both sides of the synchronization point (disconnecting switch) are already electrically connected. The operation simply adds another circuit (synchronization circuit; for automatic synchronization and grid connection, the synchronization circuit also includes a synchronizing device for speed and voltage regulation of the generator) to ensure that the voltage amplitude, frequency, phase angle difference, timing, and waveform are equal on both sides of the disconnecting switch.

[0003] Currently, there is no integrated device that can simultaneously detect key parameters such as voltage, frequency, and phase angle on both the generator and mains sides through a single button operation, and accurately capture the optimal grid connection time to automatically drive the grid connection process. Utility Model Content

[0004] The purpose of this invention is to provide an automatic synchronizing device for generators, which features rapid and shock-free grid connection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic synchronizing device for a generator, comprising a cover plate fixedly installed on the front of a housing, a grid power indicator light and a local indicator light fixedly installed on one side of the cover plate, a synchronizing indicator light and a closing indicator light fixedly installed on one side of the cover plate, multiple wiring terminals fixedly installed on the rear side of the housing, and a frequency difference adjustment knob fixedly installed on one side of the cover plate.

[0006] To facilitate the operation of the switch, as a preferred embodiment of the automatic synchronizing device for generators according to this utility model, a power switch is fixedly installed on one side of the cover plate, and an output detection switch is fixedly installed on one side of the cover plate, with the power switch located to the left of the output detection switch.

[0007] To facilitate generator overload protection, as a preferred embodiment of the automatic synchronizing device for generators according to this utility model, a first fuse is fixedly installed on one side of the housing, a second fuse is fixedly installed on one side of the housing, and the first fuse is located to the left of the second fuse.

[0008] To facilitate observation of the device's status, in a preferred embodiment of this utility model of an automatic synchronizing device for a generator, the grid power indicator is located to the left of the local indicator, and the synchronizing indicator is located to the left of the closing indicator.

[0009] To facilitate further observation of the device's status, in a preferred embodiment of this invention for an automatic synchronizing device for a generator, the frequency difference adjustment knob is located to the right of the local indicator light, to the left of the synchronizing indicator light, and above the first fuse.

[0010] For ease of wiring connection, in a preferred embodiment of the automatic synchronizing device for generators according to this utility model, the wiring terminals from left to right are closing output terminal one, closing output terminal two, machine A, and power grid A, and the wiring terminals from bottom to top are power grid N and machine N.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this invention, the automatic synchronizing device accurately detects the voltage amplitude, frequency value, and phase difference between the power grid and the generator set. Once the three strictly meet the parallel conditions, it immediately triggers the closing command, achieving a fast and shock-free grid connection effect. At the same time, the device adopts a dual-channel interlocking design, providing double protection for safe and reliable operation. Attached Figure Description

[0013] Figure 1 This is a top-view perspective structural diagram of the present invention.

[0014] Figure 2 This is a top-down perspective view of the present invention.

[0015] Figure 3 This is a rear top view of the three-dimensional structure of this utility model;

[0016] Figure 4 This is the closing wiring diagram for the AC contactor of this utility model.

[0017] In the diagram: 1. Housing; 2. Cover plate; 3. Power switch; 4. Output detection switch; 5. First fuse; 6. Second fuse; 7. Terminal; 8. Mains power indicator; 9. Local indicator; 10. Synchronization indicator; 11. Closing indicator; 12. Frequency difference adjustment knob. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must be set in a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] Please see Figures 1 to 4 An automatic synchronizing device for a generator includes a cover plate 2 fixedly installed on the front of a housing 1. A grid power indicator light 8 and a local indicator light 9 are fixedly installed on one side of the cover plate 2. A synchronizing indicator light 10 and a closing indicator light 11 are fixedly installed on one side of the cover plate 2. Multiple terminals 7 are fixedly installed on the rear side of the housing 1. A frequency difference adjustment knob 12 is fixedly installed on one side of the cover plate 2.

[0020] In this embodiment: By setting up a grid power indicator 8 and a local indicator 9, the grid power status can be judged by the brightness of the grid power indicator 8, and the local indicator 9 can be judged by the brightness of the local indicator 9. By setting up a synchronization indicator 10 and a closing indicator 11, the synchronization status of the device can be judged by the brightness of the synchronization indicator 10, and the closing status of the device can be judged by the brightness of the closing indicator 11. The lit light indicates that the device is on, and the dark light indicates that the device is off. The frequency difference adjustment knob 12 can be used to adjust the frequency difference to facilitate the normal synchronous operation of the device.

[0021] As a technical optimization of this utility model, a power switch 3 is fixedly installed on one side of the cover plate 2, and an output detection switch 4 is fixedly installed on one side of the cover plate 2, with the power switch 3 located to the left of the output detection switch 4.

[0022] In this embodiment: By setting a power switch 3, it is easy to control the power supply to be turned on or off. By setting an output detection switch 4, it is easy to detect the output of this device. By accurately detecting the voltage amplitude, frequency value and phase difference between the power grid and the generator set, once the three strictly meet the parallel conditions, the closing command is triggered immediately to achieve a fast and shock-free grid connection effect.

[0023] As a technical optimization of this utility model, a first fuse 5 is fixedly installed on one side of the housing 1, and a second fuse 6 is fixedly installed on one side of the housing 1, with the first fuse 5 located to the left of the second fuse 6.

[0024] In this embodiment, the first fuse 5 and the second fuse 6 are provided to protect the generator and its auxiliary circuits from the harm of current overload.

[0025] As a technical optimization of this utility model, the grid power indicator 8 is located to the left of the local indicator 9, and the synchronization indicator 10 is located to the left of the closing indicator 11; the frequency difference adjustment knob 12 is located to the right of the local indicator 9, to the left of the synchronization indicator 10, and above the first fuse 5.

[0026] In this embodiment: by setting the grid power indicator 8, the local indicator 9, the synchronization indicator 10, and the closing indicator 11, the operating status of the synchronization device can be judged. The frequency difference adjustment knob 12 can be used to adjust the frequency difference. In addition, the synchronization device adopts a dual-channel interlocking design, which provides dual protection for safe and reliable operation.

[0027] As a technical optimization of this utility model, the terminals 7 from left to right are closing output terminal one, closing output terminal two, machine A, and power grid A, and the terminals 7 from bottom to top are power grid N and machine N.

[0028] In this embodiment: by providing terminal 7, it is convenient to follow the instructions. Figure 4 For wiring connections, such as Figure 4 As shown in the figure, CK is the AC contactor contact, and CJ is the contactor coil. The operating voltage is 380V. When the operating voltage is 220V, the coil F terminal is connected to the 0 line of the machine.

[0029] In summary: Frequency difference adjustment knob 12 allows for frequency difference adjustment, and the grid power indicator 8, local indicator 9, synchronizing indicator 10, and closing indicator 11 enable the synchronizing device to determine its operating status. By detecting the voltage, frequency, and phase difference between the grid and the generator set, a closing command is triggered when all three conditions for parallel connection are met, achieving rapid and shock-free grid connection. This synchronizing device adopts a dual-channel interlocking design to ensure safety and reliability.

[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. All electrical equipment in this utility model is powered by an external power source.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic synchronizing device for a generator, comprising a cover plate (2) fixedly installed in front of a housing (1), characterized in that: A grid power indicator (8) and a local indicator (9) are fixedly installed on one side of the cover plate (2), a synchronization indicator (10) and a closing indicator (11) are fixedly installed on one side of the cover plate (2), multiple wiring terminals (7) are fixedly installed on the rear side of the housing (1), and a frequency difference adjustment knob (12) is fixedly installed on one side of the cover plate (2).

2. The automatic synchronizing device for a generator according to claim 1, characterized in that: A power switch (3) is fixedly installed on one side of the cover plate (2), and an output detection switch (4) is fixedly installed on one side of the cover plate (2), with the power switch (3) located to the left of the output detection switch (4).

3. The automatic synchronizing device for a generator according to claim 1, characterized in that: A first fuse (5) is fixedly installed on one side of the housing (1), and a second fuse (6) is fixedly installed on one side of the housing (1), with the first fuse (5) located to the left of the second fuse (6).

4. An automatic synchronizing device for a generator according to claim 1, characterized in that: The power grid indicator (8) is located to the left of the local indicator (9), and the synchronization indicator (10) is located to the left of the closing indicator (11).

5. An automatic synchronizing device for a generator according to claim 1, characterized in that: The frequency difference adjustment knob (12) is located to the right of the local indicator light (9), to the left of the synchronous indicator light (10), and above the first fuse (5).

6. An automatic synchronizing device for a generator according to claim 1, characterized in that: The terminals (7) from left to right are closing output terminal one, closing output terminal two, machine A, and power grid A, and the terminals (7) from bottom to top are power grid N and machine N.

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