Anti-interference electricity circuit
By designing anti-shaking circuits including DC power supplies, inverters, reactors and capacitors, the problems of complex connections and insufficient monitoring in the prior art are solved, and the circuit is simplified and real-time monitoring is realized, avoiding the phenomenon of shaking and ensuring stable operation of the equipment.
Patent Information
- Application Number
- CN202422262580.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing anti-shaking circuits are complex in connection and cannot monitor the status of components in real time, resulting in the equipment not working properly when the power grid is out of voltage or power outage, which poses safety hazards and economic losses.
An anti-shaking circuit including a DC power supply, an inverter, a reactor, a capacitor and a display screen is designed. It is connected to the inverter through a DC power supply, and the reactor and a capacitor are charged and discharged. The display screen monitors the inverter status in real time, increasing the simplicity of the circuit and real-time monitoring capabilities.
It realizes simplified connection and real-time monitoring of the circuit, avoids power shaking, ensures normal operation of the equipment, extends the service life of the circuit and provides voltage monitoring functions.
Smart Images
Figure CN223093539U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of intelligent cabinet equipment, and particularly relates to an anti-short-time power failure circuit. Background Art
[0002] Short-time power failure refers to the phenomenon of short-term voltage loss or short-term power failure of the power grid caused by lightning strikes, short circuits or other reasons; severe voltage sags will cause electrical equipment to stop working, or cause safety accidents, resulting in great economic losses; existing anti-short-time power failure circuits have problems of complex connection and inability to monitor the usage status of components in real time. Content of the Utility Model
[0003] (1) Technical Problems to be Solved
[0004] In order to solve the above problems of the prior art, the utility model provides an anti-short-time power failure circuit with simple connection and monitoring function.
[0005] (2) Technical Solutions
[0006] In order to achieve the above object, the main technical solutions adopted by the utility model include:
[0007] An anti-short-time power failure circuit includes a DC power supply, a first circuit breaker, a first contact switch, a second contact switch, a first resistor, an inverter, a reactor, a fuse, a second circuit breaker, a capacitor and a display screen; one end of the DC power supply is electrically connected to one end of the first circuit breaker, the other end of the first circuit breaker is electrically connected to one end of the first contact switch, the inverter is provided with a first DC input terminal, a second DC input terminal, a first AC output terminal, a second AC output terminal, a third AC output terminal and a communication port, the other end of the first contact switch is electrically connected to the first DC input terminal, the second DC input terminal is electrically connected to the first short-circuit breaker, the second contact switch is connected in series with the first resistor, one end of the first resistor is electrically connected to one end of the first contact switch, one end of the second contact switch is electrically connected to the other end of the second contact switch, the first AC output terminal, the second AC output terminal and the third AC output terminal are all connected to one end of the reactor at a point, the other end of the reactor is electrically connected to one end of the fuse, the other end of the fuse is electrically connected to one end of the second circuit breaker, the other end of the second circuit breaker is electrically connected to the capacitor, and the display screen is electrically connected to the communication port.
[0008] In the above anti-short-time power failure circuit, a DC surge protector is further included, one end of the DC surge protector is electrically connected to the other end of the fuse, and the other end of the DC surge protector is electrically connected to the second circuit breaker.
[0009] In the above anti-short-time power failure circuit, a DC voltmeter is further included, and the fuse, the second circuit breaker and the display screen are all electrically connected to the DC voltmeter.
[0010] (3) Beneficial effects
[0011] The beneficial effects of the present utility model are as follows: By providing a DC power supply, an inverter, a reactor and a capacitor, it is beneficial to perform charge and discharge and avoid the phenomenon of power fluctuations; by providing a display screen, it is beneficial to monitor the working state of the inverter. Description of the drawings
[0012] Figure 1 It is a schematic structural diagram of the anti-power-fluctuation circuit of the present utility model.
[0013]
Description of the reference numerals
[0014] 1. DC power supply; 2. First circuit breaker; 3. First contact switch; 4. Second contact switch; 5. First resistor; 6. Inverter; 7. Reactor; 8. Fuse; 9. Second circuit breaker; 10. Capacitor; 11. Display screen; 12. First DC input terminal; 13. Second DC input terminal; 14. First AC output terminal; 15. Second AC output terminal; 16. Third AC output terminal; 17. Communication port; 18. DC surge protector; 19. DC voltmeter. Specific embodiments
[0015] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the drawings through specific embodiments.
[0016] The most crucial concept of the present utility model lies in: providing a DC power supply, an inverter, a reactor, a capacitor and a display.
[0017] Please refer to Figure 1 as shown, an anti-power-fluctuation circuit
[0018] It includes a DC power supply, a first circuit breaker, a first contact switch, a second contact switch, a first resistor, an inverter, a reactor, a fuse, a second circuit breaker, a capacitor and a display screen; the DC power supply is electrically connected to one end of the first circuit breaker, the other end of the first circuit breaker is electrically connected to one end of the first contact switch, the inverter is provided with a first DC input terminal, a second DC input terminal, a first AC output terminal, a second AC output terminal, a third AC output terminal and a communication port, the other end of the first contact switch is electrically connected to the first DC input terminal, the second DC input terminal is electrically connected to the first short-circuit breaker, the second contact switch is connected in series with the first resistor, one end of the first resistor is electrically connected to one end of the first contact switch, one end of the second contact switch is electrically connected to the other end of the second contact switch, the first AC output terminal, the second AC output terminal and the third AC output terminal are all point-connected to one end of the reactor, the other end of the reactor is electrically connected to one end of the fuse, the other end of the fuse is electrically connected to one end of the second circuit breaker, the other end of the second circuit breaker is electrically connected to the capacitor, and the display screen is electrically connected to the communication port.
[0019] As can be seen from the above description, the beneficial effects of the present utility model are as follows: by providing a DC power supply, an inverter, a reactor and a capacitor, it is beneficial for charging and discharging and avoids the occurrence of power flicker; by providing a display screen, it is beneficial to monitor the working state of the inverter.
[0020] Please refer to Figure 1 shown, the first embodiment of the present utility model is:
[0021] An anti-surge power failure circuit, comprising a DC power supply 1, a first circuit breaker 2, a first contact switch 3, a second contact switch 4, a first resistor 5, an inverter 6, a reactor 7, a fuse 8, a second circuit breaker 9, a capacitor 10 and a display screen 11; one end of the DC power supply 1 is electrically connected to one end of the first circuit breaker 2, the other end of the first circuit breaker 2 is electrically connected to one end of the first contact switch 3, the inverter 6 is provided with a first DC input terminal 12, a second DC input terminal 13, a first AC output terminal 14, a second AC output terminal 15, a third AC output terminal 16 and a communication port 17, the other end of the first contact switch 3 is electrically connected to the first DC input terminal 12, the second DC input terminal 13 is electrically connected to the first short-circuit breaker, the second contact switch 4 is connected in series with the first resistor 5, one end of the first resistor 5 is electrically connected to one end of the first contact switch 3, one end of the second contact switch 4 is electrically connected to the other end of the second contact switch 4, the first AC output terminal 14, the second AC output terminal 15 and the third AC output terminal 16 are all point-connected to one end of the reactor 7, the other end of the reactor 7 is electrically connected to one end of the fuse 8, the other end of the fuse 8 is electrically connected to one end of the second circuit breaker 9, the other end of the second circuit breaker 9 is electrically connected to the capacitor 10, and the display screen 11 is electrically connected to the communication port 17.
[0022] In the above anti-surge power failure circuit, a DC surge protector 18 is further included. One end of the DC surge protector 18 is electrically connected to the other end of the fuse 8, and the other end of the DC surge protector 18 is electrically connected to the second circuit breaker 9.
[0023] By further including a DC surge protector 18, one end of the DC surge protector 18 is electrically connected to the other end of the fuse 8, and the other end of the DC surge protector 18 is electrically connected to the second circuit breaker 9, which is beneficial for the circuit to avoid voltage damage and improve the service life of the circuit.
[0024] In the above anti-surge power failure circuit, a DC voltmeter 19 is further included. The fuse 8, the second circuit breaker 9 and the display screen 11 are all electrically connected to the DC voltmeter 19.
[0025] By further including a DC voltmeter 19, the fuse 8, the second circuit breaker 9 and the display screen 11 are all electrically connected to the DC voltmeter 19, which is beneficial for real-time monitoring of the voltage situation in the circuit.
[0026] The working principle of the anti-power-sag circuit described in the present utility model: The DC power supply 1 has two outgoing lines. One line is connected to the frequency converter, and the other line is connected to the anti-power-sag circuit. When the DC power supply 1 is stable, the rear-end frequency converter is powered by the busbar of the DC power supply 1, and the inverter 6 is in the energy storage state; when the voltage of the busbar of the front-end DC power supply 1 temporarily drops or disappears, the inverter 6 discharges to compensate the corresponding current so that the power supply voltage will not be interrupted in a very short time to ensure the normal operation of the frequency converter during this period.
[0027] During use, the first circuit breaker 2 is closed, the first contact switch 3 is opened, and the second contact switch 4 is closed. The current flows through the resistor and enters the inverter 6 for pre-charging. After the pre-charging is completed, the second contact switch 4 is opened, the first contact switch 3 is closed, and the second circuit breaker 9 is closed. The current is converted from DC by the inverter 6 through the reactor 7 and then flows through the fuse 8. One way enters the capacitor 10 for energy storage by the capacitor 10, and the other way is connected to the surge protection device (lightning protection) and the DC voltmeter 19 (displaying current); the inverter 6 and the DC voltmeter 19 are connected to the display screen 11 (human-machine interface) in the MODBUS-RTU mode. The display screen 11 uses the FE6070C type of Fanyi to realize the visualization of data and operations; when the voltage of the busbar of the front-end DC power supply 1 temporarily drops or disappears, the capacitor 10 discharges and automatically compensates the busbar from bottom to top.
[0028] The resistance value of the first resistor 6 is 47 Ω, and the reactor 7 uses three reactors of Delixi Electric with parameters of 150 A 1.2 mH.
[0029] In summary, an anti-power-sag circuit provided by the present utility model is beneficial for charging and discharging and avoiding the occurrence of power-sag phenomena by setting a DC power supply, an inverter, a reactor, and a capacitor; and is beneficial for monitoring the working state of the inverter by setting a display screen.
[0030] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. An anti - power - failure - flicker circuit, characterized in that, It includes a DC power supply, a first circuit breaker, a first contact switch, a second contact switch, a first resistor, an inverter, a reactor, a fuse, a second circuit breaker, a capacitor and a display screen; the DC power supply is electrically connected to one end of the first circuit breaker, the other end of the first circuit breaker is electrically connected to one end of the first contact switch, the inverter is provided with a first DC input terminal, a second DC input terminal, a first AC output terminal, a second AC output terminal, a third AC output terminal and a communication port, the other end of the first contact switch is electrically connected to the first DC input terminal, the second DC input terminal is electrically connected to the first short-circuit breaker, the second contact switch is connected in series with the first resistor, one end of the first resistor is electrically connected to one end of the first contact switch, one end of the second contact switch is electrically connected to the other end of the second contact switch, the first AC output terminal, the second AC output terminal and the third AC output terminal are all connected to one end of the reactor, the other end of the reactor is electrically connected to one end of the fuse, the other end of the fuse is electrically connected to one end of the second circuit breaker, the other end of the second circuit breaker is electrically connected to the capacitor, and the display screen is electrically connected to the communication port.
2. The anti-surge power failure circuit according to claim 1, characterized in that, It further includes a DC surge protector, one end of the DC surge protector is electrically connected to the other end of the fuse, and the other end of the DC surge protector is electrically connected to the second circuit breaker.
3. The anti-power-flicker circuit according to claim 1, characterized in that, It further includes a DC voltmeter, and the fuse, the second circuit breaker and the display screen are all electrically connected to the DC voltmeter.