CN216870658U

CN216870658U - Be used for alternating current-direct current to mix measurement monitoring devices

Info

Publication number: CN216870658U
Application number: CN202220231784.9U
Authority: CN
Inventors: 何应华; 彭启文
Original assignee: Zhejiang Jinghe Electronic Technology Co ltd
Current assignee: Zhejiang Jinghe Electronic Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-07-01
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to an alternating current and direct current mixed metering monitoring device. It has solved prior art design reasonable scheduling problem inadequately. Including the monitoring mainboard, its characterized in that, the monitoring mainboard on be equipped with four ways three phase current sampling module, four ways direct current sampling module respectively, three phase voltage sampling module all the way and direct voltage sampling module all the way, just three phase current sampling module, three phase voltage sampling module, direct current sampling module and direct voltage sampling module all link to each other with coil transformer through the measurement chip, be equipped with interconnect's main chip and display screen respectively on the measurement chip, still be equipped with the communication mainboard that links to each other with RS485 communication module on the measurement chip. Has the advantages that: the four-loop alternating current and the four-loop direct current are adopted for sampling, metering and monitoring, the problem of synchronous data acquisition is solved, the process problem caused by narrow space is solved, and meanwhile, the independent metering and communication of electric energy of the four loops are supported.

Description

Be used for alternating current-direct current to mix measurement monitoring devices

Technical Field

The utility model belongs to the technical field of power supply monitoring equipment, and particularly relates to an alternating current and direct current hybrid metering monitoring device.

Background

The national double-carbon development strategy of carbon peak reaching and carbon neutralization is comprehensively promoted by the country, the national double-carbon development strategy is fully supported by the national power grid company, a 'carbon peak reaching and carbon neutralization action scheme' is released, implementation directions are respectively given from an energy supply side and a consumption side, new energy consumption, diversified energy storage, power demand side management, source grid charge storage interaction and other directions are mainly provided at the energy supply side, electric energy is vigorously promoted at the energy consumption side to replace electric power for cooling and heating, clean heating 'coal is changed into electricity', country electrification and new energy automobile application are greatly promoted at the energy consumption side, novel load is supported to be accessed in a large-scale and friendly manner, a virtual power plant and new energy active support are developed, power grid energy saving technology application and other directions are developed, energy storage, photovoltaic and deep application of base station 5G technology which mainly uses new energy, alternating current and direct current energy utilization equipment cannot be separated, and the typical problems are as follows:

1. at present, online monitoring and real-time verification of the alternating current-direct current conversion efficiency of an inverter power supply are temporarily omitted in the market, some inverters have a power regulation function related to the electric energy quality in the working process, all data output and measurement are calculated on inverter equipment, and as the operation duration of the equipment is long, faults of a direct current filter circuit, an IGBT (insulated gate bipolar transistor) and an alternating current filter occur in a plurality of equipment;

2. at present, no device for monitoring the alternating current and direct current mixed metering of the iron tower base station exists in the market, the power supply of the base station is mainly divided into three stages, generally, the power supply of the base station is 220V commercial power, and the first stage is to convert 220V into-48V; the second stage typically uses a modular power supply to convert the-48V voltage to 48V, or 28V, for powering the PA; the third level is a board level power supply, the voltage required by each chip, an analog circuit, a digital circuit and the like is converted from 12V, metering devices owned in the current market are independent alternating current devices and direct current instruments, and the existing equipment is only used for sampling monitoring, so that the purpose of auxiliary electricity charge statistics cannot be achieved in precision and real-time;

3. for example, the space of scenes such as a base station scene of an iron tower company, a photovoltaic inverter and the like is limited, and the environments are different, for example, the problems that the installation is dispersed, the space position is occupied greatly, the data of the two instruments are not synchronous in real time, the operation faults are caused by the protection problems and the like exist when the two instruments of alternating current and direct current are adopted.

Disclosure of Invention

The utility model aims to solve the problems and provides a device for monitoring AC/DC mixed metering.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a be used for alternating current-direct current to mix measurement monitoring devices, including the monitoring mainboard, the monitoring mainboard on be equipped with four ways three phase current sampling module, four ways direct current sampling module, three phase voltage sampling module of the same kind and direct current voltage sampling module of the same kind respectively, just three phase current sampling module, three phase voltage sampling module, direct current sampling module and direct current voltage sampling module all link to each other with the measurement chip that has coil transformer, be equipped with interconnect's main chip and display screen respectively on the measurement chip, still be equipped with the communication mainboard that links to each other with RS485 communication module on the measurement chip.

In the alternating current-direct current hybrid metering monitoring device, the four three-phase current sampling modules are respectively arranged on two sides of the monitoring mainboard in a pairwise correspondence manner, and the three-phase voltage sampling module is arranged on any one side of the monitoring mainboard and is positioned on one side of the three-phase current sampling module.

In foretell a be used for alternating current-direct current to mix measurement monitoring devices, four ways direct current sampling module sets gradually in one side of monitoring mainboard, RS485 communication module be located four ways direct current sampling module one side, just direct voltage sampling module set up the opposite side at the monitoring mainboard.

In the device for monitoring the alternating current and direct current mixed metering, the metering chip is provided with four keys connected with the main chip, and the keys are respectively and sequentially arranged on one side of the display screen.

In the device for monitoring the alternating current and direct current mixed metering, the metering chip is provided with an alarm indicator lamp which is positioned on one side of the display screen and connected with the main chip.

In the above device for monitoring the alternating current/direct current hybrid metering, the monitoring main board is provided with an auxiliary power supply, and the auxiliary power supply is connected with a transformer arranged on the metering chip.

In the foregoing device for monitoring ac/dc hybrid metering, a capacitance module is disposed on the metering chip.

In the above device for monitoring the alternating current/direct current hybrid metering, the metering chip is provided with a clock crystal oscillator module connected with the main chip.

In the device for monitoring the alternating current and direct current hybrid metering, the four three-phase current sampling modules are all connected in parallel on the metering chip.

In the alternating current-direct current hybrid metering monitoring device, the display screen is a wide-temperature liquid crystal screen.

Compared with the prior art, this a be used for alternating current-direct current to mix measurement monitoring devices's advantage lies in: the sampling, metering and monitoring are carried out by adopting four-loop alternating current and four-loop direct current, the problem of synchronous data acquisition is solved, the process problem caused by narrow space is solved, the independent metering and communication of electric energy of the four loops are simultaneously supported, the problem that the iron tower base station, the photovoltaic inverter, the energy storage and other scenes adopt an open-close type mutual inductor for sampling and metering the alternating current and direct current inversion nodes of the power supply can be solved, the real-time online monitoring function can be realized, the metering of alternating current and direct current electric quantity can be realized, the safety is good, and the security and the maintenance are convenient.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a block diagram of the layout structure of the present invention.

In the figure, a monitoring mainboard 1, a three-phase current sampling module 2, a direct current sampling module 3, a three-phase voltage sampling module 4, a direct current sampling module 5, a metering chip 6, a coil transformer 61, a main chip 62, a display screen 63, an RS485 communication module 64, a communication mainboard 65, a key 66, an alarm indicator lamp 67, an auxiliary power supply 7, a transformer 71, a capacitor module 72 and a clock crystal oscillator module 73.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the device for monitoring the alternating current and direct current mixed metering comprises a monitoring main board 1, a controller and a controller, wherein the monitoring main board is used for welding all parts on the main board; wherein, be equipped with four ways three phase current sampling module 2 on the monitoring mainboard 1 respectively, four ways direct current sampling module 3, three phase voltage sampling module 4 and direct current voltage sampling module 5 all the way, and three phase current sampling module 2, three phase voltage sampling module 4, direct current sampling module 3 and direct current voltage sampling module 5 all link to each other with the metering chip 6 that has coil transformer 61, be equipped with interconnect's main chip 62 and display screen 63 on metering chip 6 respectively, main chip 62 real-time supervision power consumption environment state, still be equipped with the communication mainboard 65 that links to each other with RS485 communication module 64 on metering chip 6.

The monitoring device integrates the metering function of the alternating current meter and the metering function of the direct current meter, and the monitoring mainboard 1 is provided with the three-phase current sampling module 2 and the direct current sampling module 3 which are both metered in a coil mutual inductor mode.

Wherein, four circuits three phase current sampling module 2: connecting the wires on the coil transformer 61 to the current interface of the device; the RJ12 connector mode is used for sampling the three-phase current, the secondary side milliampere level input is adopted, the safety is good, and the security and protection are convenient to maintain.

Three-phase voltage sampling module 4: connecting the wires on the coil transformer 61 to the voltage interface of the device;

four-way direct current sampling module 3: connecting the wires on the coil transformer 61 to the current interface of the device;

the direct-current voltage sampling module 5: the wires on the coil transformer 61 are connected to the voltage interface of the device terminals.

RS485 communication module 64: the communication can be carried out through a handheld terminal or a PC to complete programming setting and meter reading.

Preferably, four keys 66 connected to the main chip 62 are provided on the metering chip 6, and the keys 66 are respectively provided on one side of the display screen 63 in sequence. And (3) key inquiry mode: the keys can enter a key inquiry mode in the rotary display mode

Wherein, the metering chip 6 is provided with an alarm indicator lamp 67 which is positioned at one side of the display screen 63 and is connected with the main chip 62. The alarm function is realized, and the corresponding alarm indicator lamp is turned off when the phase is lost.

An auxiliary power supply 7 is arranged on the monitoring main board 1, and the auxiliary power supply 7 is connected with a transformer 71 arranged on the metering chip 6. Wherein, auxiliary power supply: for providing a stable low voltage power supply, and a transformer 71 for varying the ac voltage.

Further, the metering chip 6 is provided with a capacitance module 72. The capacitance module 72: the functions of bypass, lotus root removal, filtering and energy storage are realized.

Preferably, the metering chip 6 is provided with a clock crystal module 73 connected with the main chip 62. The clock crystal oscillator module 73: a clock signal is provided to the system.

The four-circuit three-phase current sampling modules 2 are all connected in parallel on the metering chip 6, a three-phase power supply supplies power, one phase or two phases are powered off, and the metering accuracy is not influenced. After power off, all stored data is not lost and can be kept for more than 10 years. The display screen 63 is a wide temperature liquid crystal display. Displaying various information by adopting a wide-temperature large liquid crystal mode; the number of the electric energy display digit is 6 and 2 is decimal. The automatic parameter display function is realized, and the time for displaying is 5 seconds.

In order to further improve the reasonability of the layout of the device, the four-circuit three-phase current sampling modules 2 are correspondingly arranged on two sides of the monitoring mainboard 1 respectively, and the three-phase voltage sampling module 4 is arranged on any one side of the monitoring mainboard 1 and is positioned on one side of the three-phase current sampling module 2.

Wherein, four ways direct current sampling module 3 set gradually in one side of monitoring mainboard 1, and RS485 communication module 64 is located four ways direct current sampling module 3 one side, and direct current voltage sampling module 5 sets up the opposite side at monitoring mainboard 1.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the monitoring main board 1, the three-phase current sampling module 2, the direct current sampling module 3, the three-phase voltage sampling module 4, the direct voltage sampling module 5, the metering chip 6, the coil transformer 61, the main chip 62, the display screen 63, the RS485 communication module 64, the communication main board 65, the keys 66, the alarm indicator lamp 67, the auxiliary power supply 7, the transformer 71, the capacitor module 72, the clock crystal oscillator module 73, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a be used for alternating current-direct current to mix measurement monitoring devices, includes monitoring mainboard (1), its characterized in that, monitoring mainboard (1) on be equipped with four ways three phase current sampling module (2), four ways direct current sampling module (3), three phase voltage sampling module (4) and direct current voltage sampling module (5) all the way respectively, just three phase current sampling module (2), three phase voltage sampling module (4), direct current sampling module (3) and direct current voltage sampling module (5) all link to each other with measurement chip (6) that have coil mutual-inductor (61), be equipped with interconnect's main chip (62) and display screen (63) on measurement chip (6) respectively, still be equipped with communication mainboard (65) that link to each other with RS485 communication module (64) on measurement chip (6).

2. The alternating current and direct current mixed metering monitoring device for the alternating current and direct current hybrid metering is characterized in that four three-phase current sampling modules (2) are correspondingly arranged on two sides of a monitoring main board (1) in pairs respectively, and the three-phase voltage sampling module (4) is arranged on any side of the monitoring main board (1) and located on one side of the three-phase current sampling module (2).

3. The device for alternating current and direct current hybrid metering monitoring according to claim 2, wherein four direct current sampling modules (3) are sequentially arranged on one side of the monitoring main board (1), the RS485 communication module (64) is arranged on one side of the four direct current sampling modules (3), and the direct voltage sampling module (5) is arranged on the other side of the monitoring main board (1).

4. The device for monitoring the alternating current and direct current mixed metering as claimed in claim 1, 2 or 3, characterized in that the metering chip (6) is provided with four keys (66) connected with the main chip (62), and the keys (66) are respectively arranged on one side of the display screen (63) in sequence.

5. The device for monitoring AC/DC mixing metering according to claim 4, wherein the metering chip (6) is provided with an alarm indicator lamp (67) which is positioned on one side of the display screen (63) and connected with the main chip (62).

6. The alternating current and direct current mixed metering monitoring device for the metering chip (6) is characterized in that an auxiliary power supply (7) is arranged on the monitoring main board (1), and the auxiliary power supply (7) is connected with a transformer (71) arranged on the metering chip (6).

7. The device for AC/DC hybrid metering monitoring as claimed in claim 6, wherein the metering chip (6) is provided with a capacitance module (72).

8. The device for monitoring AC/DC mixing metering of claim 1, wherein the metering chip (6) is provided with a clock crystal oscillator module (73) connected with the main chip (62).

9. The device for alternating current and direct current hybrid metering monitoring as claimed in claim 1, wherein the four three-phase current sampling modules (2) are all connected in parallel to the metering chip (6).

10. The device for monitoring the AC/DC mixing metering of claim 1, wherein the display screen (63) is a wide temperature liquid crystal screen.