CN212063826U - High-voltage switch AC/DC digital operation power supply - Google Patents
High-voltage switch AC/DC digital operation power supply Download PDFInfo
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- CN212063826U CN212063826U CN202020658507.7U CN202020658507U CN212063826U CN 212063826 U CN212063826 U CN 212063826U CN 202020658507 U CN202020658507 U CN 202020658507U CN 212063826 U CN212063826 U CN 212063826U
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Abstract
The utility model relates to a high-voltage switch AC/DC digital operating power supply, which comprises a DC/AC power supply switching module, a DC power supply module and an AC power supply module which are connected with the input end of the DC/AC power supply switching module, a combined sub-coil power transmission module and an energy storage power supply output module which are connected with the output end of the DC/AC power supply switching module, and a CPU main control unit for controlling the output voltage of the DC power supply module and the AC power supply module and the action of the DC/AC power supply switching module, wherein the problem of the demand of the current high-voltage switch AC mechanism and the current high-voltage switch AC mechanism on programmable AC/DC power supplies with different powers is solved by combining a high-precision DC numerical control power supply and a high-precision AC numerical control power supply, the AC numerical control power supply and the DC numerical control power supply are provided in one instrument, the user can obtain more convenient service, certain labor is liberated, and the working quality and the working efficiency are improved.
Description
Technical Field
The utility model relates to a with the powerful numerical control of high accuracy interchange and the integration of numerical control DC power supply and carry out the instrument that the mechanical dynamic characteristic detected to the high-voltage switch among the electric power system, concretely relates to high-voltage switch alternating current-direct current digital operation power.
Background
The high-voltage switch is an important control and protection device in a power system, is used in a power station, a power transmission and transformation network and a final network of a power utilization terminal, is a mechanical mechanism, and must be periodically checked for mechanical and dynamic characteristics to prevent loss caused by mechanical faults.
Because the divide-shut brake mechanism of the high tension switchgear that different application occasions correspond has direct current promptly, also have interchange, and general operating power supply is mostly single direct current or single alternating current form, consequently need frequently to change the tester and the wiring trades the line during specific test operation, current operating power supply is general still the manual regulation power supply drives divide-shut brake mechanism simultaneously, it is long to adjust operating power supply through adjusting many rings of potentiometers and consume time, and the precision of output voltage is also influenced in the process of manual regulation, consequently make the inspection operation process of whole mechanical dynamic characteristic become loaded down with trivial details, the voltage precision is low, and then influence the quality and the efficiency of inspection work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high tension switchgear alternating current-direct current digital operation power unites two into one direct current numerical control power and the alternating current numerical control power of high accuracy to do the convenience and the high efficiency of high tension switchgear dynamic behavior test under the various operating modes of improvement.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a high-voltage switch alternating current-direct current digital operation power supply comprises a direct current and alternating current power supply switching module, a direct current power supply module and an alternating current power supply module which are connected with the input end of the direct current and alternating current power supply switching module, a combined-split coil power transmission module and an energy storage power supply output module which are connected with the output end of the direct current and alternating current power supply switching module, and a CPU main control unit which is used for controlling the direct current power supply module and the alternating current power supply module to output voltage and the direct current and alternating current power supply switching module to act.
Preferably, the dc power supply module includes a dc numerical control power supply and a dc power supply control module for controlling the dc numerical control power supply; the alternating current power supply module comprises an alternating current numerical control power supply and an alternating current power supply control module used for controlling the alternating current numerical control power supply.
Preferably, the dc power control module includes a digital-to-analog conversion circuit, an amplifying circuit and a dc sensor feedback circuit, and the ac power control module includes a digital-to-analog conversion circuit, an amplifying circuit and an ac sensor feedback circuit.
Preferably, the digital-to-analog conversion circuit is composed of a multi-channel DA unit, and the output accuracy of the direct current voltage and the alternating current voltage is controlled through the combination of a coarse adjustment circuit and a fine adjustment circuit.
Preferably, the dc numerical control power supply includes a dc power driving circuit and a feedback circuit, and the ac numerical control power supply includes an ac power driving circuit and a feedback circuit.
Preferably, the direct current and alternating current power supply switching module consists of a switching circuit which selects direct current and alternating current alternatively, a high-power double-pole double-throw relay with a self-arc-extinguishing function and an external RC arc-extinguishing circuit.
Preferably, the CPU main control unit comprises an ARM unit for main control, an extended storage unit, an AD acquisition unit and a man-machine interaction and communication interface.
Preferably, the switching-on/off coil power transmission module comprises an alternating current/direct current electronic switch, a switching-on/off trigger circuit and a current sensor.
Preferably, the energy storage power output module comprises an alternating current/direct current electronic switch and a current sensor.
The utility model discloses a direct current numerical control power supply and the alternating current numerical control power supply of high accuracy unite two into one, in order to overcome present high tension switchgear alternating current mechanism and direct current mechanism to the program-controlled alternating current and direct current power supply's of different power demand problem, through direct current alternating current power supply switching module selection corresponding alternating current and direct current power supply, and set for output direct current or alternating current and concrete voltage, but provide quick program-controlled direct current numerical control power supply and alternating current power supply in an instrument, let the user obtain more convenient service, liberate certain work, improve work quality and efficiency.
Drawings
Fig. 1 is a circuit block diagram of the present invention;
fig. 2 is a block diagram of a dc power supply or ac power supply control module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The following describes the invention in further detail with reference to the attached drawings:
as shown in fig. 1, a high-voltage switch ac/dc digital operation power supply includes a dc/ac power supply switching module, a dc power supply module and an ac power supply module connected to an input terminal of the dc/ac power supply switching module, a combined/divided coil power transmission module and an energy storage power supply output module connected to an output terminal of the dc/ac power supply switching module, and a CPU main control unit for controlling output voltages of the dc power supply module and the ac power supply module and actions of the dc/ac power supply switching module; the high-precision direct-current numerical control power supply and the high-precision alternating-current numerical control power supply are combined into a whole, and in the process of checking the mechanical dynamic characteristics of the high-voltage switch, the high-voltage switch can work under various working conditions on site only by selecting the corresponding alternating-current and direct-current power supplies through the direct-current and alternating-current power supply switching module and setting and outputting direct current or alternating current and specific voltage, so that the high-voltage switch is very convenient and efficient.
The direct-current power supply module comprises a direct-current numerical control power supply and a direct-current power supply control module for controlling the direct-current numerical control power supply; the alternating current power supply module comprises an alternating current numerical control power supply and an alternating current power supply control module for controlling the alternating current numerical control power supply; the direct current power supply control module and the alternating current power supply control module are implemented in a substantially consistent manner, and as shown in fig. 2, the direct current power supply control module or the alternating current power supply control module includes a reference source, a multi-channel digital-to-analog conversion circuit, a coarse adjustment circuit, a fine adjustment circuit, an amplification circuit, a linear optical coupler, a voltage sensor feedback circuit, a multi-stage low-pass filter, and a multi-channel AD. The reference source provides accurate and stable reference voltage for the digital-to-analog conversion circuit; the multi-channel digital-to-analog conversion circuit adopts a multi-channel DA unit to realize multi-channel voltage output; the coarse adjustment circuit and the fine adjustment circuit respectively output a large voltage value and a small voltage value ready to be adjusted at any time; the amplifying circuit superposes the analog quantities of the coarse adjusting circuit and the fine adjusting circuit, and performs appropriate amplification and impedance transformation to drive the linear optocoupler to perform isolation program control; the linear optocoupler is used for electrically isolating the output of the amplifying circuit so as to directly drive the direct current numerical control power supply or the alternating current numerical control power supply to carry out proportional output; the voltage sensor feedback circuit realizes an important loop of high-speed closed-loop setting through a direct-current voltage sensor or an alternating-current voltage sensor so as to acquire direct-current or alternating-current power supply voltage and transmit the direct-current or alternating-current power supply voltage to a multi-order low-pass filter; the multi-order low-pass filter appropriately filters the signal of the voltage sensor, removes high-frequency interference components, and performs impedance conversion to provide the signal for the multi-channel AD; the multi-channel AD performs analog-to-digital conversion on the feedback signal, provides digital quantity to a CPU for calculation and determines that feedback adjustment is not needed.
The direct-current numerical control power supply comprises a direct-current power driving circuit and a feedback circuit, and the alternating-current numerical control power supply comprises an alternating-current power driving circuit and a feedback circuit; the alternating current and direct current power driving circuit is used for receiving the output of the isolation operational amplifier and carrying out full-bridge power driving, and the feedback circuit is used for adjusting the automatic voltage stabilization of the whole power supply power system part, so that the function that the voltage cannot fluctuate when the power supply power system is loaded or unloaded is realized.
The direct current and alternating current power supply switching module consists of a switching circuit which selects direct current and alternating current alternatively, a high-power double-pole double-throw relay with a self-arc extinguishing function and an external RC arc extinguishing circuit.
The CPU main control unit comprises an ARM unit, an extended storage unit, an AD acquisition unit and a man-machine interaction and communication interface; the CPU main control unit adopts high-performance ARM-CM4, can provide high-speed floating point calculation for the whole numerical control system, and provides support for high-speed feedback regulation to obtain required power supply voltage and calculation of test feedback parameters of the whole system; the storage unit is used for storing data and waveforms of the current; the AD acquisition unit is responsible for converting the sampling data of the analog quantity of each voltage sensor into digital quantity and then providing the digital quantity to the ARM unit for analysis and calculation; the man-machine interaction provides a key board and a display screen, and is used for receiving input commands of a user and displaying execution results; the communication interface provides an isolated 232 interface, an isolated USB interface and an isolated CAN interface so as to directly carry out remote program control operation through an upper computer
The switching-on/off coil power transmission module comprises an alternating current/direct current electronic switch, a switching-on/off trigger circuit and a current sensor, wherein the alternating current/direct current electronic switch stably outputs alternating current and direct current to a switching-on or switching-off coil of the high-voltage switch, and the pulse width of accurate power transmission is realized through PWM (pulse-width modulation) pulses of the CPU main control unit; the switching-on/off trigger circuit is used for setting the voltage on a switching-on coil and a switching-off coil of the high-voltage switch, and transmitting the voltage to the CPU main control unit after being isolated by the high-speed optocoupler so as to trigger the CPU main control unit module to acquire signals of the current sensor; the current sensor is used for collecting the current of the closing coil and the opening coil, collecting the current signal of the closing coil or the opening coil after the CPU main control unit module is triggered, and whether the working conditions of the closing mechanism and the opening mechanism are good or not can be accurately known by analyzing the current signal.
The energy storage power supply output module comprises an alternating current and direct current electronic switch and a current sensor, the alternating current and direct current electronic switch stably outputs alternating current and direct current to an alternating current or direct current energy storage coil of the high-voltage switch, and the pulse width of accurate power transmission is realized through PWM (pulse-width modulation) pulses of the CPU main control unit; the current sensor is used for collecting the energy storage current of the energy storage coil, the CPU main control unit module starts to collect the current signal of the energy storage coil after being triggered, and whether the working condition of the energy storage mechanism of the high-voltage switch is good or not can be accurately known through analyzing the current.
The high-voltage switch alternating current-direct current digital operation power supply is internally provided with a high-power alternating current numerical control power supply and a high-power direct current numerical control power supply, the voltage range of the alternating current numerical control power supply is 5V to 270V, the maximum load current is 15A, the voltage range of the direct current numerical control power supply is 5V to 270V, and the maximum load current is 20A.
Through the multistage DA unit circuit and the high-speed AD feedback acquisition circuit, PID fast feedback adjustment is achieved, namely, a DA channel is used for achieving coarse adjustment of voltage, and another DA channel is used for achieving fine adjustment of voltage, so that more accurate voltage is obtained, and the accuracy of direct current voltage and the accuracy of alternating current voltage are 0.5%.
The high-precision direct current numerical control power supply and the high-precision alternating current numerical control power supply are combined into a whole, and the high-voltage switch can work under various working conditions on site only by setting and outputting direct current or alternating current and specific voltage in the process of checking the mechanical and dynamic characteristics of the high-voltage switch, so that the high-voltage switch is very convenient and efficient.
Claims (9)
1. A high-voltage switch alternating current-direct current digital operation power supply is characterized in that: the energy-saving power supply system comprises a direct current and alternating current power supply switching module, a direct current power supply module and an alternating current power supply module which are connected with the input end of the direct current and alternating current power supply switching module, a combined and separated coil power transmission module and an energy storage power supply output module which are connected with the output end of the direct current and alternating current power supply switching module, and a CPU main control unit which is used for controlling the direct current power supply module and the alternating current power supply module to output voltage and the direct current and alternating current power supply switching module to.
2. The high voltage switched ac/dc digital operating power supply of claim 1, further comprising: the direct-current power supply module comprises a direct-current numerical control power supply and a direct-current power supply control module for controlling the direct-current numerical control power supply; the alternating current power supply module comprises an alternating current numerical control power supply and an alternating current power supply control module used for controlling the alternating current numerical control power supply.
3. A high voltage switched ac/dc digital operated power supply as claimed in claim 2, wherein: the direct-current power supply control module comprises a digital-to-analog conversion circuit, an amplifying circuit and a direct-current sensor feedback circuit, and the alternating-current power supply control module comprises a digital-to-analog conversion circuit, an amplifying circuit and an alternating-current sensor feedback circuit.
4. A high voltage switched ac/dc digital operated power supply as claimed in claim 3, wherein: the digital-to-analog conversion circuit consists of a multi-channel DA unit and controls the output accuracy of the direct current voltage and the alternating current voltage through the combination of the coarse adjustment circuit and the fine adjustment circuit.
5. A high voltage switched ac/dc digital operated power supply as claimed in claim 2, wherein: the direct-current numerical control power supply comprises a direct-current power driving circuit and a feedback circuit, and the alternating-current numerical control power supply comprises an alternating-current power driving circuit and a feedback circuit.
6. A high voltage switched ac/dc digital operated power supply as claimed in any one of claims 1 to 5, wherein: the direct current and alternating current power supply switching module consists of a switching circuit which selects direct current and alternating current alternatively, a high-power double-pole double-throw relay with a self-arc extinguishing function and an external RC arc extinguishing circuit.
7. A high voltage switched ac/dc digital operated power supply as claimed in any one of claims 1 to 5, wherein: the CPU main control unit comprises an ARM unit for main control, an extended storage unit, an AD acquisition unit and a man-machine interaction and communication interface.
8. A high voltage switched ac/dc digital operated power supply as claimed in any one of claims 1 to 5, wherein: the switching-on/off coil power transmission module comprises an alternating current/direct current electronic switch, a switching-on/off trigger circuit and a current sensor.
9. A high voltage switched ac/dc digital operated power supply as claimed in any one of claims 1 to 5, wherein: the energy storage power supply output module comprises an alternating current/direct current electronic switch and a current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020658507.7U CN212063826U (en) | 2020-04-26 | 2020-04-26 | High-voltage switch AC/DC digital operation power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020658507.7U CN212063826U (en) | 2020-04-26 | 2020-04-26 | High-voltage switch AC/DC digital operation power supply |
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| Publication Number | Publication Date |
|---|---|
| CN212063826U true CN212063826U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020658507.7U Active CN212063826U (en) | 2020-04-26 | 2020-04-26 | High-voltage switch AC/DC digital operation power supply |
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| CN (1) | CN212063826U (en) |
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- 2020-04-26 CN CN202020658507.7U patent/CN212063826U/en active Active
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