Generator power-off automatic switching system

Abstract

The utility model discloses a generator power-off automatic switching system which comprises a generator, a switching device and electric equipment, the generator is connected with a main circuit, the main circuit is connected with the switching device, the switching device is provided with two circuits, a rectifier bridge, a storage battery, an inverter and a change-over switch are installed on the second circuit, and the first circuit and the second circuit are connected with the same change-over switch. When the generator breaks down, the change-over switch is automatically unlocked to the second circuit to enable the storage battery to supply power to the electric equipment, and when the generator is repaired, the change-over switch is automatically unlocked to the first circuit to enable the generator to supply power to the electric equipment. When the change-over switch is unlocked to the second line, the first line is disconnected, the alarm alarms that the generator breaks down, the generator is reminded to be repaired as soon as possible, and the situation that the generator is not repaired in time and the test time cost is increased is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of automatic switching of generators when power is cut off, and in particular to an automatic switching system for generators when power is cut off. Background Art

[0002] In field tests, generators are usually used to provide power to electrical equipment. However, in the experiment, the generator often fails and the test is forced to be terminated, resulting in discontinuous power supply. Termination of the experiment often affects the test results or increases the time cost, which will bring certain losses and risks. Therefore, a generator power failure automatic switching system is proposed. Utility Model Content

[0003] The present application provides a generator power failure automatic switching system, the system is provided with a switching device and an alarm, when the generator fails, the conversion switch is automatically unlocked to line two to make the line conductive, so that the battery continues to supply power to the electrical equipment, when the generator is repaired, the conversion switch is automatically unlocked to line one, so that the generator starts to supply power to the electrical equipment, avoiding the situation where the power supply is discontinuous due to the failure of the generator, avoiding the impact on the experimental results, reducing the time cost loss and risk; when the generator fails, the conversion switch is unlocked to line two, line one is disconnected, and the generator side cannot supply power normally, then the alarm alarm prompts the staff that the generator has failed, so that they can repair the generator as soon as possible, avoiding untimely maintenance and increased test time cost.

[0004] The present application provides a generator power failure automatic switching system, comprising: a generator, a switching device and an electrical equipment, the generator is connected to a main line, a main switch is arranged on the main line, the main line is connected to the switching device, the switching device is provided with two lines, namely line one and line two, line one and line two are arranged in parallel, a rectifier bridge, a battery, an inverter and a conversion switch are installed on line two, the rectifier bridge, the battery, the inverter and the conversion switch are arranged in series in sequence, line one and line two are connected to the same conversion switch, and the output ends of line one and line two are connected to the electrical equipment at the same time;

[0005] The transfer switch is electrically connected to the alarm.

[0006] Furthermore, the rectifier bridge is composed of a plurality of diodes.

[0007] Furthermore, the rated voltage of the battery is 380V and the capacity is 60-80kVA·h.

[0008] Furthermore, the rated power of the inverter is 100kW.

[0009] Furthermore, four rollers are arranged at the bottom of the generator.

[0010] Furthermore, a handle is provided on the generator.

[0011] It can be seen from the above technical scheme that the present application provides a generator power failure automatic switching system, including: a generator, a switching device and electrical equipment, the generator is connected to a main line, and a main switch is arranged on the main line. When the generator needs to be tested and power is required, the main switch of the main line is turned on, and the main line is connected to the switching device. The switching device is provided with two lines, namely line one and line two. Line one and line two are arranged in parallel so that the two lines do not affect each other and can provide electrical energy for the electrical equipment. A rectifier bridge, a battery, an inverter and a conversion switch are installed on line two. The rectifier bridge, the battery, the inverter and the conversion switch are arranged in series in sequence. Line one and line two are connected to the same conversion switch, and the output ends of line one and line two are connected to the electrical equipment at the same time. When the generator is powered normally, the conversion switch is unlocked to line one, and the generator power supply continuously charges the battery. In this process, after the action of the rectifier bridge, the alternating current is converted into direct current energy and stored in the battery, and the generator power supply to the electrical equipment is not affected. When the generator When a generator fails, the transfer switch automatically unlocks to line two to conduct the line, and the battery's power is converted from direct current to alternating current through the inverter, which continues to supply power to the electrical equipment. When the generator is repaired, the transfer switch automatically unlocks to line one to conduct the line, so that the generator continues to supply power to the electrical equipment. The switching device avoids the situation where the generator fails and causes discontinuous power supply, and avoids affecting the experimental results, reducing time cost losses and risks. The principle that the rectifier bridge current cannot be reversed is used to prevent the battery from reversely charging the generator, thereby protecting the generator and providing safety protection for the personnel repairing the generator. When the experiment is over, the main switch of the main line is turned off, and other equipment is turned off one after another. The transfer switch is electrically connected to the alarm. When the generator fails, the transfer switch is unlocked to line two, line one is disconnected, and the generator side cannot supply power normally. The alarm then alerts the staff to remind them that the generator has failed, so that they can repair the generator as soon as possible to avoid untimely repairs and increased test time costs.

[0012] In summary, the beneficial effects produced by this application are as follows:

[0013] 1. The system is equipped with a switching device. When the generator fails, the transfer switch automatically unlocks to line 2 to make the line conductive, so that the battery continues to supply power to the electrical equipment. When the generator is repaired, the transfer switch automatically unlocks to line 1, so that the generator starts to supply power to the electrical equipment. The switching device avoids the situation where the generator fails and causes discontinuous power supply, thereby avoiding affecting the experimental results and reducing time cost losses and risks.

[0014] 2. The generator is equipped with an alarm. When the generator fails, the transfer switch is unlocked to line 2, line 1 is disconnected, and the generator side cannot supply power normally. The alarm then alerts the staff that the generator has failed, allowing them to repair the generator as soon as possible to avoid untimely repairs and increased test time costs.

[0015] 3. The switching device is equipped with a rectifier bridge, which uses the principle that the rectifier bridge current cannot be reversed to prevent the battery from reversely charging the generator, thereby protecting the generator and providing safety protection for the personnel repairing the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of this application.

[0018] Illustration Description:

[0019] Among them, 1-generator, 2-battery, 3-electrical equipment, 4-alarm, 5-main line, 6-main switch, 7-line one, 8-conversion switch, 9-line two, 10-rectifier bridge, 11-inverter, 12-roller. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] See the above technical solution Figure 1 .

[0022] Embodiment 1:

[0023] A generator power failure automatic switching system comprises: a generator 1, a switching device and an electric device 3, the generator 1 is connected to a main line 5, the main line 5 is provided with a main switch 6, when the generator 1 needs to be powered for a field test, the main switch 6 of the main line 5 is turned on, the main line 5 is connected to the switching device, the switching device is provided with two lines, namely line 1 7 and line 2 9, the line 1 7 and the line 2 9 are arranged in parallel, the parallel connection makes the two lines not affect each other, and both can provide electric energy for the electric device 3, the line 2 9 is installed with a rectifier bridge 10, a battery 2, an inverter 11 and a conversion switch 8, the rectifier bridge 10, the battery 2, the inverter 11 and the conversion switch 8 are arranged in series in sequence, the line 1 7 and the line 2 9 are connected to the same conversion switch 8, the output ends of the line 1 7 and the line 2 9 are connected to the electric device 3, when the generator 1 is powered normally, the conversion switch 8 is unlocked to the line 1 7 to power the electric device 3, and the generator 1 power supply continuously charges the battery 2, In this process, after the action of the rectifier bridge 10, the alternating current is converted into direct current and stored in the battery 2, and the generator 1 is not affected in supplying power to the electrical equipment 3. When the generator 1 fails, the conversion switch 8 is automatically unlocked to the line 2 9 to make the line conductive, and the power of the battery 2 is converted into alternating current through the inverter 11, so as to continue to supply power to the electrical equipment 3. When the generator 1 is repaired, the conversion switch 8 is automatically unlocked to the line 1 7 to make the line conductive, so that the generator 1 continues to supply power to the electrical equipment 3. The setting of the switching device avoids the situation where the generator 1 fails and causes discontinuous power supply, avoids affecting the experimental results, reduces time cost loss and risk, and uses the principle that the current of the rectifier bridge 10 cannot be reversed to prevent the battery 2 from reversely charging the generator 1, protects the safety of the generator 1, and provides safety protection for the personnel repairing the generator 1. When the experiment is over, the main switch 6 of the main line 5 is first turned off, and then other equipment is turned off one by one;

[0024] The transfer switch 8 is electrically connected to the alarm 4. When the generator 1 fails, the transfer switch 8 is unlocked to the line 2 9, the line 1 7 is disconnected, and the generator 1 side cannot supply power normally. Then the alarm 4 alarms to remind the staff that the generator 1 has failed, so that they can repair the generator 1 as soon as possible to avoid untimely maintenance and increase the test time cost.

[0025] As a preferred embodiment, the rectifier bridge 10 is composed of a plurality of diodes. The rectifier bridge 10 can more effectively convert AC power into DC power and has a higher power handling capacity.

[0026] As a preferred embodiment, the rated voltage of the battery 2 is 380V, and the capacity is 60-80 kVA·h.

[0027] As a preferred embodiment, the rated power of the inverter 11 is 100 kW.

[0028] As a preferred embodiment, four rollers 12 are provided at the bottom of the generator 1. The generator 1 used in the field test is relatively large in size, and the four rollers 12 facilitate the movement of the generator 1, saving human resources.

[0029] As a preferred embodiment, a handle is provided on the generator 1, and the handle is convenient for a person to exert force when moving the generator 1.

[0030] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0031] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A generator power failure automatic switching system, characterized in that: include: A generator (1), a switching device and an electrical equipment (3), wherein the generator (1) is connected to a main line (5), a main switch (6) is provided on the main line (5), the main line (5) is connected to the switching device, the switching device is provided with two lines, namely, line one (7) and line two (9), the line one (7) and the line two (9) are arranged in parallel, a rectifier bridge (10), a storage battery (2), an inverter (11) and a conversion switch (8) are installed on the line two (9), the rectifier bridge (10), the storage battery (2), the inverter (11) and the conversion switch (8) are arranged in series in sequence, the line one (7) and the line two (9) are connected to the same conversion switch (8), and the output ends of the line one (7) and the line two (9) are connected to the electrical equipment (3); The conversion switch (8) is electrically connected to the alarm (4).

2. A generator power failure automatic switching system according to claim 1, characterized in that: The rectifier bridge (10) is composed of a plurality of diodes.

3. The automatic switching system for power failure of a generator according to claim 1, characterized in that: The rated voltage of the storage battery (2) is 380V, and the capacity is 60-80kVA·h.

4. The automatic switching system for power failure of a generator according to claim 1, characterized in that: The rated power of the inverter (11) is 100 kW.

5. The generator power failure automatic switching system according to claim 1, characterized in that: Four rollers (12) are arranged at the bottom of the generator (1).

6. The automatic switching system for generator power failure according to claim 1, characterized in that: The generator (1) is provided with a handle.

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