CN-122000938-A - Voltage compensation device, power supply device, and power supply control method
Abstract
The voltage compensation device, the power supply device and the power supply control method provided by the application are used for monitoring the power supply voltage of the user side, generating a voltage compensation control instruction under the condition that the power supply voltage of the user side is smaller than the required voltage of the user side, and sending the voltage compensation control instruction to the voltage compensation device so that the voltage compensation device outputs compensation voltage according to the voltage difference between the power supply voltage of the user side and the required voltage of the user side to provide compensation voltage for a user side line, thereby shortening the time for carrying out voltage rectification on the low voltage phenomenon and improving the voltage compensation efficiency.
Inventors
- YAN ZHENCHENG
Assignees
- 广东电网有限责任公司潮州供电局
- 广东电网有限责任公司
Dates
- Publication Date
- 20260508
- Application Date
- 20260112
Claims (10)
- 1. The voltage compensation device is characterized by comprising a power supply inlet wire, a power supply outlet wire, a power supply unit, and a collecting voltage reduction module, a digital-to-analog conversion module, a microcomputer module and an output voltage reduction module which are connected in sequence; One end of the power supply inlet wire is used for being connected with a transformer circuit, and the other end of the power supply inlet wire is connected with the input end of the collecting voltage reducing module; the power supply unit is respectively connected with the acquisition voltage reduction module, the digital-to-analog conversion module, the microcomputer module and the output voltage reduction module and is used for providing electric energy; The collecting voltage reduction module is used for collecting first alternating voltage on the power supply inlet and reducing the first alternating voltage into second alternating voltage according to a preset voltage reduction ratio; The digital-to-analog conversion module is used for converting the second alternating voltage into a digital signal; The microcomputer module is used for calculating compensation voltage according to the digital signal and determining the transformation ratio of the voltage reduction module for output according to the compensation voltage; the output voltage reduction module is used for outputting the compensation voltage to the user side line according to the transformation ratio and the alternating current provided by the power supply unit.
- 2. The voltage compensation device according to claim 1, wherein the power supply unit comprises a storage battery pack and an inverter, one end of the storage battery pack is connected to a power supply inlet wire, the other end of the storage battery pack is connected to one end of the inverter, and the other end of the inverter is connected to the output voltage reduction module; the storage battery pack is used for outputting direct-current voltage; and the inverter is used for collecting the direct-current voltage output by the storage battery pack and converting the direct-current voltage into alternating-current voltage.
- 3. The voltage compensation device according to claim 1 or 2, further comprising: The device charging device comprises a device charging switch and a charging loop, wherein one end of the device charging switch is connected with a power inlet wire, the other end of the device charging switch is connected with one end of the charging loop, and the other end of the charging loop is connected with the power supply unit; The device charging switch is used for controlling the charging loop to be closed; the charging loop is used for charging the power supply unit.
- 4. The voltage compensation device according to claim 1 or 2, further comprising: a low voltage compensation start switch, an internal power switch, and a compensation power access switch; one end of the low-voltage compensation starting switch is connected with a power supply inlet wire, and the other end of the low-voltage compensation starting switch is connected with the collecting voltage reduction module; The internal power switch is respectively connected with the power supply unit, the digital-to-analog conversion module and the microcomputer module; One end of the compensation power supply access switch is connected with the output voltage reduction module, and the other end of the compensation power supply access switch is connected with the power supply outgoing line.
- 5. The voltage compensation device of claim 4 wherein the internal power switch is configured to control the power supply unit to supply power; the low-voltage compensation starting switch is used for controlling the voltage compensation device to be connected into a transformer substation line; the compensation power supply access switch is used for controlling the voltage compensation device to be accessed to a user side line.
- 6. The voltage compensation device according to claim 1 or 2, further comprising: the display screen is connected with the power supply unit and the microcomputer module; the display screen is used for displaying the voltage value of the power supply incoming line, the compensation voltage value, the voltage value of the power supply outgoing line and the electric quantity of the power supply unit.
- 7. A power supply device, characterized by comprising: The power supply system comprises a transformer end, a voltage compensation device and a user power end, wherein the transformer end, the voltage compensation device and the user power end are sequentially connected; the voltage compensation device is as claimed in claims 1 to 6.
- 8. A power supply control method, characterized by comprising: monitoring a user side power supply voltage; controlling the access voltage compensation device to provide compensation voltage for the user side line under the condition that the user side power supply voltage is smaller than the user side demand voltage; wherein the voltage compensation device is as claimed in claims 1 to 6.
- 9. The power supply control method according to claim 8, wherein, in the case where the subscriber side power supply voltage is smaller than the subscriber side demand voltage, controlling the access voltage compensation device to supply the compensation voltage to the subscriber side line includes: generating a voltage compensation control command under the condition that the power supply voltage of the user side is smaller than the required voltage of the user side; And sending the voltage compensation control instruction to the voltage compensation device so that the voltage compensation device provides compensation voltage for the user side line.
- 10. The power supply control method according to claim 9, characterized in that transmitting the voltage compensation control instruction to the voltage compensation device to cause the voltage compensation device to supply a compensation voltage to a subscriber-side line, comprising: And sending the voltage compensation control instruction to the voltage compensation device so that the voltage compensation device determines a voltage difference according to the user side power supply voltage and the user side demand voltage, and outputs a compensation voltage according to the voltage difference so as to provide the compensation voltage for the user side line.
Description
Voltage compensation device, power supply device, and power supply control method Technical Field The application relates to the technical field of power grid boosting, in particular to a voltage compensation device, a power supply device and a power supply control method. Background With the rapid development of economy and the continuous increase of electricity load, the domestic electricity demand of residents also rises rapidly. The electric equipment of household appliances such as refrigerators, washing machines, televisions and the like is continuously increased, so that the electric load is also rapidly increased, the phenomenon of low voltage at the tail end of a low-voltage distribution line is easy to occur, the phenomenon of low voltage influences the normal electricity utilization of users, and even the situation that the electric equipment of the users burns out and the like can be caused. Therefore, power supply enterprises need to continuously optimize a power supply system to meet diversified power consumption requirements of different users. In the prior art, when dealing with the low voltage phenomenon, voltage rectification is mainly performed by means of load cutting, low-voltage wire replacement, distribution transformer replacement and the like. Then, the process of performing voltage rectification on the low-voltage phenomenon is long in time, the power consumption requirement of a user side cannot be met in time, and the power supply efficiency is reduced. Disclosure of Invention The application provides a voltage compensation device, a power supply device and a power supply control method, which are used for solving the technical problems of long time consumption and low efficiency in the voltage rectifying process when the low voltage problem is solved in the prior art. The application provides a voltage compensation device, which comprises a power supply incoming line, a power supply outgoing line, a power supply unit, and a collecting voltage reduction module, a digital-to-analog conversion module, a microcomputer module and an output voltage reduction module which are connected in sequence; One end of the power supply inlet wire is used for being connected with a transformer circuit, and the other end of the power supply inlet wire is connected with the input end of the collecting voltage reducing module; the power supply unit is respectively connected with the acquisition voltage reduction module, the digital-to-analog conversion module, the microcomputer module and the output voltage reduction module and is used for providing electric energy; The collecting voltage reduction module is used for collecting first alternating voltage on the power supply inlet and reducing the first alternating voltage into second alternating voltage according to a preset voltage reduction ratio; The digital-to-analog conversion module is used for converting the second alternating voltage into a digital signal; The microcomputer module is used for calculating compensation voltage according to the digital signal and determining the transformation ratio of the voltage reduction module for output according to the compensation voltage; the output voltage reduction module is used for outputting the compensation voltage to the user side line according to the transformation ratio and the alternating current provided by the power supply unit. Further, the power supply unit comprises a storage battery pack and an inverter, wherein one end of the storage battery pack is connected with a power inlet wire, the other end of the storage battery pack is connected with one end of the inverter, and the other end of the inverter is connected with the output voltage reduction module; the storage battery pack is used for outputting direct-current voltage; and the inverter is used for collecting the direct-current voltage output by the storage battery pack and converting the direct-current voltage into alternating-current voltage. Further, the method further comprises the following steps: The device charging device comprises a device charging switch and a charging loop, wherein one end of the device charging switch is connected with a power inlet wire, the other end of the device charging switch is connected with one end of the charging loop, and the other end of the charging loop is connected with the power supply unit; The device charging switch is used for controlling the charging loop to be closed; the charging loop is used for charging the power supply unit. Further, the method further comprises the following steps: a low voltage compensation start switch, an internal power switch, and a compensation power access switch; one end of the low-voltage compensation starting switch is connected with a power supply inlet wire, and the other end of the low-voltage compensation starting switch is connected with the collecting voltage reduction module; The internal power switch is respectively connected with the power supp