CN215986241U

CN215986241U - Three-phase heavy current high voltage output module

Info

Publication number: CN215986241U
Application number: CN202122496379.8U
Authority: CN
Inventors: 覃均生; 朱红滨; 韦敏军
Original assignee: Zhejiang Baorui Photoelectric Technology Co ltd
Current assignee: Zhejiang Baorui Photoelectric Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-08
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the field of current and voltage output modules, in particular to a three-phase large-current high-voltage output module which comprises a power supply, wherein the power supply is connected with a charge-discharge module, the charge-discharge module is connected with a large-capacity lithium battery and a main control module, the main control module is connected with a display screen, a three-phase four-wire voltage measuring module and a three-phase current measuring module, and the input ends of the three-phase four-wire voltage measuring module and the three-phase current measuring module are connected with a wireless power frequency synchronization module and an information acquisition module.

Description

Three-phase heavy current high voltage output module

Technical Field

The utility model relates to the field of current and voltage output modules, in particular to a three-phase large-current high-voltage output module.

Background

In the prior art, the line inspection equipment for the transformer is often large, is very inconvenient to carry, needs to use a crane and the like to convey the line inspection equipment to the site, needs to use a GPS signal, needs to place a cable to introduce reference voltage, and is very inconvenient, influences the work and has potential safety hazards due to the fact that the GPS signal is not available, or the cable cannot be placed, or the cable is too long and the like, which can cause the problem that the site cannot be applied and the like.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a three-phase large-current high-voltage output module, which solves the problems in the prior art, adopts a wireless frequency synchronous sampling technology, does not need a GPS signal, does not need to place a cable to introduce reference voltage, realizes the functions of wireless synchronous sampling and wireless remote measurement, is very convenient to operate, and is very portable to carry.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a three-phase heavy current high pressure output module, includes the power, and the power is connected with charge-discharge module, and charge-discharge module is connected with large capacity lithium cell and host system, and host system is connected with display screen, three-phase four-wire voltage measurement module and three-phase current measurement module, and three-phase four-wire voltage measurement module and three-phase current measurement module's input is connected with wireless power frequency synchronization module and information acquisition module.

Preferably, the three-phase four-wire voltage measuring module comprises a voltage phase locking module, a voltage measuring module and a voltage simulation filtering module, wherein the input end of the voltage phase locking module is connected with the wireless power frequency synchronization module, the output end of the voltage phase locking module is connected with the voltage measuring module, the output end of the voltage measuring module is connected with the main control module, the input end of the voltage measuring module is connected with the voltage simulation filtering module, and the input end of the voltage simulation filtering module is connected with the information acquisition module.

Preferably, the three-phase current measuring module comprises a current phase locking module, a current collecting module and a current simulation filtering module, wherein the input end of the current phase locking module is connected with the wireless power frequency synchronization module, the output end of the current phase locking module is connected with the current collecting module, the output end of the current collecting module is connected with the main control module, the input end of the current collecting module is connected with the current simulation filtering module, and the input end of the current simulation filtering module is connected with the information acquisition module.

Preferably, the power supply is a 5V dc power supply.

Preferably, the three-phase four-wire voltage measuring module may simultaneously measure 1 to 3 ac voltages and may simultaneously measure a phase angle between the voltages and display a vector diagram, and the three-phase current measuring module may simultaneously measure 1 to 3 ac currents and may simultaneously measure a phase angle between the currents and display a vector diagram.

Preferably, the display screen is a color touch screen.

(III) advantageous effects

1. The utility model aims to provide a three-phase heavy-current high-voltage output module, which adopts a wireless frequency synchronous sampling technology, does not need GPS signals, does not need to place a cable to introduce reference voltage, realizes the functions of wireless synchronous sampling and wireless remote measurement, is very convenient to operate and is very portable to carry;

2. the utility model can realize automatic range switching, can simultaneously measure 1 to 3 paths of alternating voltage, can simultaneously measure 1 to 3 paths of alternating current, can simultaneously measure phase angles between voltage and current, and displays a vector diagram;

3. the utility model adopts the color touch screen, does not need physical keys and is simple and easy to use;

4. the utility model is internally provided with a high-capacity lithium battery, and can meet the working requirement of one day after being charged once.

Drawings

Fig. 1 is a block diagram illustrating the overall schematic of the present invention.

FIG. 2 is a general schematic block diagram of a three-phase four-wire voltage measurement module of the present invention.

FIG. 3 is a block diagram of the overall schematic of the three-phase current measurement module of the present invention.

In the figure: the device comprises a power supply 1, a charge-discharge module 2, a high-capacity lithium battery 3, a main control module 4, a display screen 5, a three-phase four-wire voltage measuring module 6, a three-phase current measuring module 7, a wireless power frequency synchronization module 8, a voltage phase locking module 9, a voltage measuring module 10, a voltage analog filtering module 11, a current phase locking module 12, a current collecting module 13 and a current analog filtering module 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a technical scheme that: a three-phase heavy current high-voltage output module comprises a power supply 1, wherein the power supply 1 is connected with a charge-discharge module 2, the charge-discharge module 2 is connected with a large-capacity lithium battery 3 and a main control module 4, the main control module 4 is connected with a display screen 5, a three-phase four-wire voltage measuring module 6 and a three-phase current measuring module 7, the input ends of the three-phase four-wire voltage measuring module 6 and the three-phase current measuring module 7 are connected with a wireless power frequency synchronization module 8 and an information acquisition module, the module adopts a wireless frequency synchronization sampling based technology, as shown in figure 1, the charge-discharge module 2 automatically takes the input direct current power supply 1 and automatically charges the large-capacity lithium battery 3 according to actual conditions, or takes the direct current voltage discharged by the charge-discharge module of the large-capacity lithium battery 3 as a power supply to be supplied to the main control module 4, and the main control module 4 sequentially reads voltage data in the three-phase four-wire voltage measuring module 6 and current data in the three-phase current measuring module 7 at regular time, the three-phase four-wire voltage measuring module 6 and the three-phase current measuring module 7 measure the voltage and current values of external measured signals, as shown in fig. 1, the measured signals are sent to the main control module 4, the main control module 4 performs digital filtering and calculation, and finally the result is sent to the display screen 5 to be displayed.

Three-phase four-wire voltage measuring module 6 includes voltage phase locking module 9, voltage measuring module 10 and voltage simulation filter module 11, wherein, voltage phase locking module 9's input is connected with wireless power frequency synchronization module 8, its output is connected with voltage measuring module 10, voltage measuring module 10's output is connected with host system 4, its input is connected with voltage simulation filter module 11, voltage simulation filter module 11's input is connected with the information acquisition module, wireless power frequency synchronization module 8 sends homologous frequency signal to voltage phase locking module 9 after the lock phase, as the reference frequency of voltage measuring module 10 measurement phase, and simultaneously, the voltage signal that awaits measuring of outside measured article sends to voltage measuring module 10 after voltage simulation filter module 11 handles, realize gathering the voltage amplitude and the phase place of outside measured signal simultaneously.

The three-phase current measuring module 7 comprises a current phase locking module 12, a current collecting module 13 and a current simulation filtering module 14, wherein the input end of the current phase locking module 12 is connected with a wireless power frequency synchronization module 8, the output end of the current phase locking module is connected with the current collecting module 13, the output end of the current collecting module 13 is connected with a main control module 4, the input end of the current simulation filtering module 14 is connected with an information acquisition module, the wireless power frequency synchronization module 8 sends a homologous frequency signal to the current phase locking module 12 for phase locking, the reference frequency is used as the reference frequency for measuring the phase of the current collecting module 13, meanwhile, a current signal to be measured of an external measured object is sent to the current collecting module after being processed by the current simulation filtering module 14, and the current amplitude and the phase of the external measured signal are collected simultaneously.

The power supply 1 is a 5V direct-current power supply, the voltage and current amplitude required by phase measurement is very small, the minimum voltage amplitude phase measurement can reach 1V, the minimum current amplitude phase measurement can reach 10mA, the method is suitable for differential protection phasor analysis of the transformer, and is also suitable for current measurement with small load during load test of a newly-built, expanded or transformed main transformer of the transformer substation.

The three-phase four-wire voltage measuring module 6 can measure 1 to 3 paths of alternating voltages at the same time, can measure phase angles between voltages at the same time and display a vector diagram, the three-phase current measuring module 7 can measure 1 to 3 paths of alternating currents at the same time and measure phase angles between currents at the same time and display the vector diagram, so that the measuring flexibility can be realized, and the efficiency can be improved when the number of current and voltage paths needing to be measured is large.

The display screen 5 is a color touch screen, so that physical keys are not needed, and the color touch screen is simple and easy to use.

The working principle is as follows: the module adopts a wireless frequency synchronous sampling based technology, as shown in figure 1, a charging and discharging module 2 automatically takes and inputs a direct current power supply 1 and automatically charges a high-capacity lithium battery 3 according to the actual situation, or the direct current voltage of the high-capacity lithium battery 3 discharged by the charging and discharging module is taken as a power supply to be supplied to the main control module 4, the main control module 4 periodically and sequentially polls and reads the voltage data in the three-phase four-wire voltage measuring module 6 and the current data in the three-phase current measuring module 7, wherein, the internal working principle of the three-phase four-wire voltage measuring module 6 is shown in fig. 2, the wireless power frequency synchronization module 8 sends the homologous frequency signal to the voltage phase locking module 9 for phase locking, and then the homologous frequency signal is used as the reference frequency of the phase measured by the voltage measuring module 10, meanwhile, a voltage signal to be measured of an external measured object is processed by the voltage analog filtering module 11 and then is sent to the voltage measuring module 10, so that the voltage amplitude and the phase of the external measured signal are acquired simultaneously; meanwhile, the internal working principle of the current measuring module is shown in fig. 3, the wireless power frequency synchronization module 8 sends a homologous frequency signal to the current phase locking module 12 for phase locking, and then the signal is used as the reference frequency of the current collecting module 13 for measuring the phase, meanwhile, the current signal to be measured of the external measured object is sent to the current collecting module after being processed by the current analog filtering module 14, so as to realize the simultaneous collection of the current amplitude and the phase of the external measured signal, the voltage current value of the external measured signal is measured by the three-phase four-wire voltage measuring module 6 and the three-phase current measuring module 7, and then the voltage current value is sent to the main control module 4 as shown in fig. 1, and the result is sent to the display screen 5 for display by the digital filtering and calculation of the main control module 4, therefore, the utility model adopts the wireless frequency synchronization sampling technology, does not need a GPS signal, does not need to place a cable for introducing a reference voltage, and realizes the functions of wireless synchronization sampling and wireless remote measurement, the device is very convenient to operate and very portable to carry, can simultaneously measure 1-3 paths of alternating voltage and 1-3 paths of alternating current, can simultaneously measure phase angles between voltage and current, displays a vector diagram, and improves the working efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a three-phase heavy current high pressure output module, its characterized in that, includes power (1), power (1) is connected with charge-discharge module (2), charge-discharge module (2) are connected with large capacity lithium cell (3) and host system (4), host system (4) are connected with display screen (5), three-phase four-wire voltage measurement module (6) and three-phase current measurement module (7), three-phase four-wire voltage measurement module (6) with the input of three-phase current measurement module (7) is connected with wireless power frequency synchronization module (8) and information acquisition module.

2. A three-phase large current high voltage output module according to claim 1, wherein the three-phase four-wire voltage measuring module (6) comprises a voltage phase locking module (9), a voltage measuring module (10) and a voltage analog filtering module (11), wherein the input end of the voltage phase locking module (9) is connected with the wireless power frequency synchronization module (8), the output end thereof is connected with the voltage measuring module (10), the output end of the voltage measuring module (10) is connected with the main control module (4), the input end thereof is connected with the voltage analog filtering module (11), and the input end of the voltage analog filtering module (11) is connected with the information obtaining module.

3. A three-phase large current high voltage output module according to claim 1, wherein the three-phase current measuring module (7) comprises a current phase locking module (12), a current collecting module (13) and a current analog filtering module (14), wherein an input end of the current phase locking module (12) is connected with the wireless power frequency synchronization module (8), an output end of the current phase locking module is connected with the current collecting module (13), an output end of the current collecting module (13) is connected with a main control module (4), an input end of the current collecting module is connected with the current analog filtering module (14), and an input end of the current analog filtering module (14) is connected with the information obtaining module.

4. A three-phase high current high voltage output module according to claim 1, wherein the power supply (1) is a 5V dc power supply.

5. A three-phase high-current high-voltage output module according to claim 1, wherein the three-phase four-wire voltage measuring module (6) can measure 1 to 3 paths of alternating voltages simultaneously and can measure the phase angle between the voltages simultaneously and display a vector diagram, and the three-phase current measuring module (7) can measure 1 to 3 paths of alternating currents simultaneously and can measure the phase angle between the currents simultaneously and display a vector diagram.

6. A three-phase high current high voltage output module according to claim 1, wherein the display screen (5) is a color touch screen.