CN215416423U - Base station voltage-stabilizing power supply device - Google Patents
Base station voltage-stabilizing power supply device Download PDFInfo
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- CN215416423U CN215416423U CN202121028636.9U CN202121028636U CN215416423U CN 215416423 U CN215416423 U CN 215416423U CN 202121028636 U CN202121028636 U CN 202121028636U CN 215416423 U CN215416423 U CN 215416423U
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- 238000004891 communication Methods 0.000 claims description 10
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- 230000008569 process Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
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- 239000010949 copper Substances 0.000 description 1
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Abstract
The utility model discloses a base station voltage-stabilizing power supply device, which comprises a compensation transformer, a regulating transformer, an electric brush contact unit, a transmission mechanism, a detection unit and a control unit, wherein the compensation transformer is connected with the detection unit; the secondary winding of the compensation transformer is connected in series in the main loop, the primary winding of the compensation transformer is connected with the secondary winding of the regulating transformer through the electric brush contact unit, and the primary winding of the regulating transformer is connected with the output end of the voltage-stabilized power supply device; the control unit controls the electric brush contact unit through the transmission mechanism according to the voltage obtained by the detection unit, and the voltage regulating transformer is automatically regulated. The utility model can automatically keep the stability of the output voltage when the voltage fluctuation of the power supply network or the load fluctuation causes the voltage fluctuation; the compensation device has the characteristics of high compensation speed, wide range and high precision, and has overvoltage and undervoltage protection, overcurrent and overtemperature protection and full-capacity bypass protection; the method has the advantages of large capacity, high efficiency, no waveform distortion and stable voltage regulation; the device has the advantages of reliable operation, small volume, light weight and convenient use and installation.
Description
Technical Field
The utility model relates to a voltage-stabilized power supply device, in particular to a base station voltage-stabilized power supply device.
Background
A mobile base station, i.e. a public mobile communication base station, is a form of a source radio station, which refers to a radio transceiver station for information transfer between mobile telephone terminals through a mobile communication switching center in a certain radio coverage area. The construction of mobile communication base stations is generally performed around the factors of coverage, call quality, investment benefit, difficulty and easiness in construction, convenience in maintenance and the like.
The mobile communication base stations are usually installed in various places, the power supply adopts a local power pulling mode, some places are in an urban power grid, and some places are in the wide and remote rural and suburban combination part. The power transmission mode adopts cable laying power supply, aluminum wires with thinner wire diameters are adopted for common cables for reducing cost, the laying distance of lead wires and cables exceeds more than 300 meters, because the wires have internal resistance, particularly the resistivity of the aluminum wires is 1.8 times of that of copper wires, about dozens of volts of voltage drop is generated on the wires, the power supply to mobile communication equipment at the tail end is low, the equipment cannot work normally and is frequently stopped, the sectional area of the wires is small, the load of users carried by the wires is gradually increased, the wires are heated, the wire loss is increased, the aging is accelerated, the load capacity of a low-voltage wire is further reduced by the aging of the wires, the problem that the sectional area of the wire is small can be solved by replacing the low-voltage lead wire with large sectional area, the load is divided, if the wire aging is caused by the heating of the wire with small sectional area, the dividing load of the lead wire with large sectional area needs to be replaced, the load of the wire is not changed greatly, and the planning is reasonable, and the circuit is aged, and only the lead needs to be replaced. And the replacement of the lead cable greatly increases equipment investment and labor cost.
Along with the development of the technology and the progress of the society, more and more novel power electronic equipment are connected into the urban power grid, so that a plurality of harmonic waves, unbalance and reactive power are generated in the power grid, the polluted electric energy generates heating vibration on line impedance, the transmission current is increased due to the reduction of voltage, and the cable can be burnt seriously and finally.
Disclosure of Invention
The purpose of the utility model is as follows: the utility model aims to provide a voltage-stabilized power supply device for a base station, which solves the problems of low remote power transmission voltage of a base station cable and cable heating; the problems of long manual laying period, high investment cost and increased maintenance difficulty in replacing thick-wire-diameter and high-conductivity copper wire cables are solved.
The technical scheme is as follows: the utility model relates to a base station voltage-stabilizing power supply device, which comprises a compensation transformer, a regulating transformer, an electric brush contact unit, a transmission mechanism, a detection unit and a control unit, wherein the compensation transformer is connected with the detection unit; the secondary winding of the compensation transformer is connected in series in the main loop, the primary winding of the compensation transformer is connected with the secondary winding of the regulating transformer through the electric brush contact unit, and the primary winding of the regulating transformer is connected with the output end of the voltage-stabilized power supply device; the control unit controls the electric brush contact unit through the transmission mechanism according to the voltage obtained by the detection unit, and the voltage regulating transformer is automatically regulated.
The control unit comprises a central controller, a communication module, an A/D acquisition module, a voltage regulation output module and an HMI operation screen; the A/D acquisition unit converts the acquired voltage signal from an analog signal into a digital signal and sends the digital signal to the central controller; the voltage regulation output module generates a transformation ratio regulation control signal according to an output signal of the central controller; and the central controller is communicated with the HMI operation screen through a communication module.
The HMI operation screen inputs control adjusting range and setting voltage stabilization voltage, and outputs and displays voltage and current parameters.
The communication module is 485 communication.
The detection unit comprises a voltage Hall sensor and a signal conditioning module; the voltage Hall sensor collects the output voltage of the voltage-stabilized power supply device, the signal conditioning module processes the collected voltage and then sends the processed voltage to the control unit.
The signal conditioning module comprises a comparator, wherein one end of the comparator inputs a voltage stabilizing voltage, and the other end of the comparator inputs an acquisition voltage.
The transmission mechanism comprises a driving circuit, a servo motor and a connecting rod, wherein the driving circuit controls the servo motor through the driving circuit according to a transformation ratio adjusting control signal of the control unit, and the position of the connecting rod is controlled through the servo motor, so that the voltage regulating transformer is adjusted.
Further, including out-of-limit protection unit, out-of-limit protection unit includes two limit switch, limit switch sets up the both ends at voltage regulating transformer.
Furthermore, the protection circuit comprises an over-voltage and under-voltage, over-current and over-temperature bypass protection circuit with full capacity, and the normal work of the equipment is kept without disconnection.
Has the advantages that: compared with the prior art, the utility model has the advantages that:
(1) when the voltage fluctuation of the external power supply network or the load fluctuation causes the voltage fluctuation, the stability of the output voltage can be automatically kept.
(2) The compensation device has the characteristics of high compensation speed, wide range and high precision, and has the functions of overvoltage and undervoltage protection, overcurrent and overtemperature protection and full-capacity bypass protection, and can keep the normal work of equipment from disconnection.
(3) The microcomputer digital circuit control technology is adopted, and the device has the advantages of large capacity, high efficiency, no waveform distortion, stable voltage regulation and the like, is widely applicable to loads and can continuously work for a long time.
(4) The device has the advantages of reliable operation, small volume, light weight, convenient use and installation and the like.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic diagram of the voltage regulation of the present invention;
fig. 3 is a schematic diagram of the voltage compensation of the present invention.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings.
As can be seen from fig. 1 and 2, the base station voltage-stabilized power supply device according to the present invention includes a compensation transformer, a regulating transformer, a brush contact unit, a transmission mechanism, a detection unit and a control unit; the secondary winding of the compensation transformer is connected in series in the main loop, the primary winding of the compensation transformer is connected with the secondary winding of the regulating transformer through the electric brush contact unit, and the primary winding of the regulating transformer is connected with the output end of the voltage-stabilized power supply device; the control unit controls the electric brush contact unit through the transmission mechanism according to the voltage obtained by the detection unit, and the voltage regulating transformer is automatically regulated.
The control unit comprises a central controller, a 485 communication module, an A/D acquisition module, a voltage regulation output module and an HMI operation screen; the A/D acquisition unit converts the acquired voltage signal from an analog signal into a digital signal and sends the digital signal to the central controller; the voltage regulation output module generates a transformation ratio regulation control signal according to an output signal of the central controller; the central controller is communicated with the HMI operation screen through the communication module. The HMI operation screen can input control adjustment range and set voltage stabilization voltage, and output display voltage and current parameters. The transmission mechanism comprises a driving circuit, a servo motor and a connecting rod, wherein the driving circuit controls the servo motor through the driving circuit according to a transformation ratio adjusting control signal of the control unit, and the position of the connecting rod is controlled through the servo motor.
When the magnitude and polarity of the voltage applied to the primary winding coil are changed, the compensating transformer can enable the secondary winding coil connected in series on the load loop to generate a compensating voltage transformer with variable amplitude and polarity. The regulating transformer is a single-phase autotransformer capable of automatically regulating secondary voltage. It has two pairs of brushes which can slide automatically and symmetrically. When the servo motor drives the brush to circularly slide along the exposed part of the cylindrical winding of the autotransformer through the connecting rod, the secondary voltage is stably regulated, so that the compensation voltage is changed, and the stability of the output voltage is maintained.
The detection unit comprises a voltage Hall sensor and a signal conditioning module; the voltage Hall sensor collects the output voltage of the voltage-stabilized power supply device, and the signal conditioning module processes the collected voltage. The detection unit takes out the collected voltage from the output end of the voltage stabilizer, the collected voltage is subjected to voltage transformation, rectification and filtering to obtain a signal which changes along with the output voltage, the signal enters the comparator to be compared with the set stabilized voltage, and when the output voltage of the voltage stabilizer changes beyond the setting precision (control regulation range) allowed range, the voltage detection sends out an output voltage regulation instruction until the output voltage of the voltage stabilizer returns to the setting precision allowed range.
The utility model relates to out-of-limit protection. The out-of-limit protection consists of a limit switch, and when the electric brush slides to two ends to collide with the limit switch, the normally closed contact of the electric brush is disconnected, and the servo motor stops rotating. The utility model also comprises an over-voltage and under-voltage, over-current, over-temperature and full-capacity bypass protection circuit to keep the equipment working normally without disconnection.
The voltage stabilizing principle of the present invention is illustrated by taking a single phase as an example, and as can be seen from fig. 3:
Uao＝Uai+UBa
uai-input voltage of A phase of voltage stabilizer, Uao-output voltage of A phase of voltage stabilizer, UBa-compensation voltage of A phase of voltage stabilizer; the working principle is as follows: when the a-phase input voltage Uai increases by Δ Uai, the compensation voltage UBa also changes by Δ UBa, and Δ UBa- Δ Uai keeps the a-phase output voltage Uao unchanged.
According to the change of the output voltage, the detection unit samples, detects and outputs signals to control the servo motor to rotate, so as to drive the brush set on the voltage regulating transformer TVV to slide or roll, and adjust the secondary voltage of the voltage regulating transformer, so as to change the polarity and the size of the compensation transformer, realize the automatic stabilization of the output voltage within the range allowed by the voltage stabilization precision, and further achieve the purpose of automatic voltage stabilization.
Claims (9)
1. A kind of base station voltage-stabilized power supply apparatus, characterized by: the device comprises a compensation transformer, a regulating transformer, an electric brush contact unit, a transmission mechanism, a detection unit and a control unit; the secondary winding of the compensation transformer is connected in series in the main loop, the primary winding of the compensation transformer is connected with the secondary winding of the regulating transformer through the electric brush contact unit, and the primary winding of the regulating transformer is connected with the output end of the voltage-stabilized power supply device; the control unit controls the electric brush contact unit through the transmission mechanism according to the voltage obtained by the detection unit, and the voltage regulating transformer is automatically regulated.
2. The regulated power supply apparatus of claim 1 wherein: the control unit comprises a central controller, a communication module, an A/D acquisition module, a voltage regulation output module and an HMI operation screen; the A/D acquisition module converts the acquired voltage signal from an analog signal into a digital signal and sends the digital signal to the central controller; the voltage regulation output module generates a transformation ratio regulation control signal according to an output signal of the central controller; and the central controller is communicated with the HMI operation screen through a communication module.
3. A regulated power supply apparatus for a base station according to claim 2, wherein: the HMI operation screen inputs control adjusting range and setting voltage stabilization voltage, and outputs and displays voltage and current parameters.
4. A regulated power supply apparatus for a base station according to claim 2, wherein: the communication module is 485 communication.
5. The regulated power supply apparatus of claim 1 wherein: the detection unit comprises a voltage Hall sensor and a signal conditioning module; the voltage Hall sensor collects the output voltage of the voltage-stabilized power supply device, and the signal conditioning module processes the collected voltage.
6. The regulated power supply apparatus of claim 5 wherein: the signal conditioning module comprises a comparator, wherein one end of the comparator inputs a voltage stabilizing voltage, and the other end of the comparator inputs an acquisition voltage.
7. The regulated power supply apparatus of claim 1 wherein: the transmission mechanism comprises a driving circuit, a servo motor and a connecting rod, wherein the driving circuit controls the servo motor through the driving circuit according to a transformation ratio adjusting control signal of the control unit, and the position of the connecting rod is controlled through the servo motor.
8. The regulated power supply apparatus of claim 1 wherein: including out-of-limit protection unit, out-of-limit protection unit includes two limit switch, limit switch sets up the both ends at regulating transformer.
9. The regulated power supply apparatus of claim 1 wherein: the protection circuit comprises an over-voltage and under-voltage, over-current and over-temperature bypass protection circuit with full capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121028636.9U CN215416423U (en) | 2021-05-13 | 2021-05-13 | Base station voltage-stabilizing power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121028636.9U CN215416423U (en) | 2021-05-13 | 2021-05-13 | Base station voltage-stabilizing power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215416423U true CN215416423U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121028636.9U Expired - Fee Related CN215416423U (en) | 2021-05-13 | 2021-05-13 | Base station voltage-stabilizing power supply device |
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| Country | Link |
|---|---|
| CN (1) | CN215416423U (en) |
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2021
- 2021-05-13 CN CN202121028636.9U patent/CN215416423U/en not_active Expired - Fee Related
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