A three-phase electric energy push-pull measurement data protection device with power-off memory and zero power consumption

Abstract

The invention discloses a three-phase electric energy push-pull measurement data protection device with power-off memory and zero power consumption, comprising: a working power supply sensing system, a push-pull function triggering system, a pull-start system, a physical power converter and a user-side acquisition terminal; the working power supply sensing system is respectively connected to the push-pull function triggering system and the three-phase power supply of a power grid, the push-pull function triggering system is connected to the pull-start system, the pull-start system is electrically connected to the push-pull switching system, and the push-pull switching system is electrically connected to the user-side acquisition terminal; the invention can realize the function of uploading status data until the system resumes power supply, and effectively solves the problem of stopping data uploading during power failure in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of electric power systems, and more particularly to a power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device. Background Art

[0002] In the prior art, electricity meters are powered by a special power supply system to implement timely electricity metering and real-time data upload. When the meter is powered off, the lithium battery in the meter can only guarantee 5 minutes of data operation power, and then the power is lost and it has to wait for power to be restored. During this period, data upload stops and the meter stops measuring. Therefore, power supply guarantee for electricity meters is very important. Once the meter loses power, data disorder will occur in the intelligent power grid system, the system will enter blind detection and mistransmission. Therefore, the electricity meter must ensure zero-disturbance switching of professional and proprietary power supplies at the moment of power outage.

[0003] Therefore, how to provide a three-phase electric energy push-pull measurement data protection device with power-off memory and zero power consumption is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention provides a power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device, which is used to solve the problem of data uploading stopping during power failure in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device, comprising: a working power supply sensing system, a push-pull function triggering system, a pull start system, a physical power converter and a user-side acquisition terminal;

[0007] The working power supply sensing system is respectively connected to the push-pull function trigger system and the three-phase power supply of the power grid, the push-pull function trigger system is connected to the pull start system, the pull start system is electrically connected to the push-pull switching system, and the push-pull switching system is electrically connected to the user-side acquisition terminal; wherein,

[0008] The working power supply sensing system is used to detect the power supply status of the three-phase power supply in real time and send a power supply signal to the push-pull function trigger system;

[0009] The push-pull function trigger system is used to receive the power signal, trigger and activate the push command or the pull command according to the power signal, and send the corresponding command to the pull start system;

[0010] The pull-start system is used to receive the command sent by the push-pull function trigger system to control the start and exit of the pull state;

[0011] The physical power converter is used to connect to an external power source to provide power to the user-side acquisition terminal when the power grid loses power;

[0012] The user-side acquisition terminal is used to acquire measurement data from meters.

[0013] Preferably, when the push-pull function trigger system is in a push state during the operation of the three-phase power supply, data is uploaded to the background normally;

[0014] When the working power supply sensing system detects that the three-phase power supply is in a power-off state, a pull command is sent to the push-pull function trigger system, and the pull state is started through the pull start system, the external power supply is connected to the three-phase power supply through the physical power converter, and the data of the meter is collected through the user-side collection terminal.

[0015] When the three-phase power supply is restored, the working power supply sensor system enters a push state, and the working power supply sensor system sends a push signal to drive the pull start system to exit the pull state.

[0016] Preferably, it also includes a three-phase parallel connection system and a push-pull switching system;

[0017] The three-phase parallel connection system is electrically connected to the pull-start system and the push-pull switching system respectively;

[0018] The three-phase parallel connection system is used to ensure the three-phase current and voltage balance of the meter;

[0019] The push-pull switching system is used to realize the actual switching of the push-pull state according to the state of the pull start system.

[0020] Preferably, it also includes a storage and upload system, which is connected to the user-side acquisition terminal and is used to store the meter measurement data collected by the user-side acquisition terminal and upload it to the background.

[0021] Preferably, it also includes a data transmission operation port, which is connected to the storage and upload system and is used to retrieve the meter measurement data from the storage and upload system.

[0022] Preferably, the working power supply sensing system includes 3 groups of micro inverters.

[0023] Preferably, the physical power converter is a power inverter.

[0024] Preferably, it further comprises a housing, wherein the working power sensing system, the push-pull function triggering system, the pull-start system, the physical power converter and the user-side acquisition terminal are all arranged in the housing;

[0025] The shell includes an upper panel and a lower shell, the upper panel is provided with a device display screen and an indicator light, the device display screen is electrically connected to the user-side acquisition terminal, and the indicator light is electrically connected to the pull-start system.

[0026] It can be known from the above technical scheme that, compared with the prior art, the present invention discloses a power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device. The present invention constructs a standby power supply control system with negative logic theory, and monitors the status of the three-phase power supply. Once the three-phase power supply is detected to be in a power-off state, the pull-start system starts the pull command, enters the data power supply system of the user-side acquisition terminal, and completes the power supply to the user-side acquisition terminal through an external power supply. The data system of the metering meter on the user-side acquisition terminal is still in an online energized state when the city power is off, and the status data is kept uploaded until the system resumes power supply, which effectively solves the problem of data uploading stopping during power outage in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 The accompanying drawing is a schematic diagram of the internal structure of the device of the present invention;

[0029] Figure 2 and Figure 3 The accompanying drawings are schematic diagrams of the external structure of the device of the present invention;

[0030] 1 is a push-pull switching system, 2, 3 and 4 are working power supply sensing systems, 5 is a push-pull function trigger system, 6 is a pull start system, 7 is a three-phase parallel connection system, 8 is a physical power converter, 9 is a storage and upload system, 10 is a data transmission operation port, 11 is a user-side acquisition terminal, 12 is a three-phase four-wire incoming and outgoing wiring terminal, 13 is a physical power access port, 14 is a reserved hole for fixing the shell, 15 is a heat dissipation hole, 16 is a device start switch, 17 is a device display screen, and 18 is an indicator light. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present invention discloses a three-phase electric energy push-pull measurement data protection device with power-off memory and zero power consumption, such as Figure 1 As shown, it includes: a working power supply sensing system, a push-pull function triggering system 5, a pull-start system 6, a physical power converter 8 and a user-side acquisition terminal 11;

[0033] The working power supply sensing system is respectively connected to the push-pull function trigger system 5 and the three-phase power supply of the power grid, the push-pull function trigger system 5 is connected to the pull start system 6, the pull start system 6 is electrically connected to the push-pull switching system 1, and the push-pull switching system 1 is electrically connected to the user-side acquisition terminal 11; wherein,

[0034] A working power supply sensing system, used to detect the power supply status of the three-phase power supply in real time and send a power supply signal to the push-pull function trigger system 5;

[0035] The push-pull function trigger system 5 is used to receive a power signal, trigger an activation push command or a pull command according to the power signal, and send the corresponding command to the pull start system 6;

[0036] The pull start system 6 is used to receive the command sent by the push-pull function trigger system 5 and control the start and exit of the pull state;

[0037] A physical power converter 8, used to connect an external power source and provide power to the user-side acquisition terminal 11 when the power grid fails;

[0038] The user-side acquisition terminal 11 is used to acquire the measurement data of the meter.

[0039] It should be noted that:

[0040] In this embodiment, the working power supply sensing system uses the 12V power supply signal as a medium to transmit the power supply status to the push-pull function trigger system 5 in real time, which is used as a reference value for the "push" and "pull" actions.

[0041] The external interface of the physical power converter 8 can be connected to various forms of 12V external power supplies, and the 12V power supply is boosted into a high-frequency 220V, 50HZ rectangular square wave power supply through the internal inverter circuit to drive the operation of the entire system.

[0042] In order to further implement the above technical solution, when the push-pull function trigger system 5 is in the push state during the operation of the three-phase power supply, the data is uploaded to the background normally;

[0043] When the working power supply sensor system detects that the three-phase power supply is in a power-off state, it sends a pull command to the push-pull function trigger system 5, and starts the pull state through the pull start system 6, connects the external power supply to the three-phase power supply through the physical power converter 8, and collects the data of the meter through the user-side acquisition terminal 11.

[0044] When the three-phase power supply is restored, the working power supply sensor system enters a push state, and the working power supply sensor system sends a push signal to drive the pull start system 6 to exit the pull state.

[0045] In order to further implement the above technical solution, it also includes a three-phase parallel connection system 7 and a push-pull switching system 1;

[0046] The three-phase parallel connection system 7 is electrically connected to the pull starting system 6 and the push-pull switching system 1 respectively;

[0047] The three-phase parallel connection system 7 is used to ensure the three-phase current and voltage balance of the meter;

[0048] The push-pull switching system 1 is used to realize the actual switching of the push-pull state according to the state of the pull start system 6.

[0049] It should be noted that:

[0050] Since most of the on-site metering instruments are powered by three-phase 380V, in order to ensure the three-phase current and voltage balance of the metering instruments, a three-phase parallel connection system 7 is used to parallel connect the square wave power after the physical power converter 8 is inverted into 380V.

[0051] In order to further implement the above technical solution, a storage and upload system 9 is also included. The storage and upload system 9 is connected to the user-side acquisition terminal 11 and is used to store the meter measurement data collected by the user-side acquisition terminal 11 and upload it to the background.

[0052] In order to further implement the above technical solution, a data transmission operation port 10 is also included, which is connected to the storage and upload system 9 and is used to retrieve the measurement data of the meter from the storage and upload system 9.

[0053] It should be noted that:

[0054] In this embodiment, there are multiple ways to retrieve data, one of which is button-type on-site retrieval, and the others are retrieval via Bluetooth, USB, RS485, and the like.

[0055] In order to further implement the above technical solution, the working power supply sensing system includes 3 groups of micro inverters.

[0056] In order to further implement the above technical solution, the physical power converter 8 is a power inverter.

[0057] In order to further implement the above technical solution, Figure 2-3 As shown, it also includes a housing, and a working power supply sensing system, a push-pull function triggering system 5, a pull start system 6, a physical power converter 8 and a user-side acquisition terminal 11 are all arranged in the housing;

[0058] The outer shell includes an upper panel and a lower shell. The upper panel is provided with a device display screen and an indicator light. The device display screen is electrically connected to the user-side acquisition terminal 11 , and the indicator light is electrically connected to the pull-start system 6 .

[0059] It should be noted that:

[0060] The side wall of the lower shell is provided with three-phase four-wire incoming and outgoing wiring terminals 12, a physical power supply inlet 13, a shell fixing reserved hole 14, a heat dissipation hole 15 and an equipment starting switch 16.

[0061] The working principle of the present invention is:

[0062] When the push-pull function trigger system 5 is in the "push" state during system operation, the data of the acquisition terminal is uploaded normally, and the data is pushed to the power dispatching background according to the protocol format to implement normal data exchange. If the local power grid suddenly loses power during operation, the acquisition terminal also loses power and the communication with the background is interrupted, and the real-time status upload of data is also interrupted. At this time, the working power supply sensor system of the present invention sends a "recovery" command to the push-pull function trigger system 5 to drive the pull-start system 6 to transmit and upload the "pull" start system online, and delivers the physical power converter 8 and multiple physical power converters such as the inverter power supply voltage to the three-phase parallel connection system 7, which is connected to the push-pull switching system 1 and enters the data power supply system of the user-side acquisition terminal 11, so as to complete the "zero disturbance recovery switching" action. At this time, the data system of the metering meter of the user-side acquisition terminal 11 is still in an online energized state when the city power is off, and the upload of status data is maintained until the system resumes power supply. When the system resumes power supply, the push-pull function trigger system 5 enters the "push" state, causing the working power sensor system to send a "push" signal to drive the pull start system 6 to exit the "pull state", and the physical power converter 8 and other physical power converters such as inverter power supply stop supplying power to the data system. The power supply mode of the data collection terminal system is switched to the internal system of the power grid system to maintain the data online and upload it to the background.

[0063] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0064] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device, characterized in that: Including: working power sensing system, push-pull function triggering system, pull-start system, physical power converter and user-side acquisition terminal; The working power supply sensing system is respectively connected to the push-pull function trigger system and the three-phase power supply of the power grid, the push-pull function trigger system is connected to the pull start system, the pull start system is electrically connected to the push-pull switching system, and the push-pull switching system is electrically connected to the user-side acquisition terminal; wherein, The working power supply sensing system is used to detect the power supply status of the three-phase power supply in real time and send a power supply signal to the push-pull function trigger system; The push-pull function trigger system is used to receive the power signal, trigger and activate the push command or the pull command according to the power signal, and send the corresponding command to the pull start system; The pull-start system is used to receive the command sent by the push-pull function trigger system to control the start and exit of the pull state; The physical power converter is used to connect to an external power source to provide power to the user-side acquisition terminal when the power grid loses power; The user-side acquisition terminal is used to collect measurement data of the meter; When the push-pull function trigger system is in a push state during the operation of the three-phase power supply, data is uploaded to the background normally; When the working power supply sensing system detects that the three-phase power supply is in a power-off state, a pull command is sent to the push-pull function trigger system, and the pull state is started through the pull start system, the external power supply is connected to the three-phase power supply through the physical power converter, and the data of the meter is collected through the user-side collection terminal. When the three-phase power supply is restored, the working power supply sensor system enters a push state, and the working power supply sensor system sends a push signal to drive the pull start system to exit the pull state; It also includes three-phase parallel connection system and push-pull switching system; The three-phase parallel connection system is electrically connected to the pull-start system and the push-pull switching system respectively; The three-phase parallel connection system is used to ensure the three-phase current and voltage balance of the meter; The push-pull switching system is used to realize the actual switching of the push-pull state according to the state of the pull start system.

2. A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device according to claim 1, characterized in that: It also includes a storage and upload system, which is connected to the user-side acquisition terminal and is used to store the meter measurement data collected by the user-side acquisition terminal and upload it to the background.

3. A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device according to claim 2, characterized in that: It also includes a data transmission operation port, which is connected to the storage and upload system and is used to retrieve the meter measurement data from the storage and upload system.

4. A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device according to claim 1, characterized in that: The working power supply sensing system includes three groups of micro inverters.

5. The power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device according to claim 1 is characterized in that: The physical power converter is a power inverter.

6. A power-off memory zero-power consumption three-phase electric energy push-pull measurement data protection device according to claim 1, characterized in that: It also includes a housing, wherein the working power sensing system, the push-pull function triggering system, the pull-start system, the physical power converter and the user-side acquisition terminal are all arranged in the housing; The shell includes an upper panel and a lower shell, the upper panel is provided with a device display screen and an indicator light, the device display screen is electrically connected to the user-side acquisition terminal, and the indicator light is electrically connected to the pull-start system.

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