CN218498873U - Intelligent movement power protection terminal - Google Patents

Abstract

The utility model discloses an intelligent mobile battery protection terminal, which comprises: a housing and a main circuit board arranged in the housing. The main circuit board is integrated with a power supply module, a main control CPU, a metering unit, a telemetry remote control unit, a carrier Communication module, 4G communication module, the power supply module uses AC three-phase four-wire system to supply power for the main control CPU, metering unit, telemetry and remote control module, 4G communication module and carrier communication module. The utility model realizes the uplink and downlink communication with the external power distribution main station and the mining main station through the 4G communication module; the three-phase voltage, three-phase current, zero-sequence current, power and electric quantity of the external low-voltage monitoring terminal are obtained through the metering chip, based on Carrier communication module, telemetry remote control module, and 4G communication module cooperate to realize remote meter reading, control and status monitoring of external low-voltage monitoring terminals, improve the functions of existing discrete power-saving terminal monitoring devices, and have a high degree of integration , and takes up less space.

Description

An intelligent mobile battery protection terminal

technical field

The utility model belongs to the field of distribution network automation equipment and is used for real-time monitoring of 0.4kV station area side equipment for power maintenance work, station area topology identification, real-time reporting of power outage events, accurate fault research and judgment, intelligent early warning of power quality in station areas, etc., and specifically relates to a Smart mobile power saving terminal.

Background technique

At present, the task of ensuring power supply is increasing day by day, and the requirements for ensuring power supply are also constantly increasing. The power protection terminal is an intelligent monitoring device that can monitor the operation of equipment in the station area. The power protection terminal used in the traditional technology is a discrete power protection terminal, which has technical problems such as insufficient functional integration, large volume, and inconvenient function expansion during use. Based on the above, it is necessary to improve the power-guaranteed terminal deployed in the traditional power-guaranteed mode.

The information disclosed in the background technology section is only intended to deepen the understanding of the general background technology of the application, and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art known to those skilled in the art.

Utility model content

In order to solve the technical problems of insufficient functional integration, large volume, and inconvenient function expansion in the traditional technology of discrete power-saving terminals, the purpose of this utility model is to propose an intelligent mobile power-saving terminal, so as to realize the power-saving terminal needs Many functions are integrated into one, reducing the volume of the whole machine.

In order to achieve the above object, the technical scheme provided by the utility model is as follows:

An intelligent mobile power protection terminal, which is installed between a low-voltage monitoring terminal and an external master station, includes: a housing and a main circuit board arranged in the housing, and a power module and a main control CPU are integrated on the main circuit board , metering unit, telemetry and remote control unit, carrier communication module, and 4G communication module. powered by;

The main control CPU is connected to the metering unit, which obtains the three-phase voltage, three-phase current, zero-sequence current, power and electric quantity of the external low-voltage monitoring terminal unit through the metering unit;

The main control CPU is connected to the 4G communication module, which communicates with an external master station through the 4G communication module;

The main control CPU is connected to the carrier communication module, and the carrier communication module is connected to the low-voltage monitoring terminal for remote acquisition of various data;

The main control CPU is connected with the telemetry and remote control module, which realizes the signal telemetry and the remote control of opening and closing of the external low-voltage monitoring terminal through the telemetry and remote control module.

Further, the external master station is a power distribution master station and a utility master station.

Further, the main circuit board is integrated with a Bluetooth module, and communicates with the operation and maintenance equipment through the Bluetooth module.

Further, the 4G communication module is integrated with a Beidou module for geographical location information collection and time synchronization.

Further, the housing is provided with two maintenance interfaces, both of which are RJ45 interfaces, one of the RJ45 interfaces is connected to the main control CPU through a 100M network connection, and the other RJ45 interface is connected to the main control CPU through a serial cable. Connection, connect with the handheld device through the RJ45 interface.

Further, the model of the main control CPU is SCM701.

Further, a supercapacitor is integrated on the main circuit board, and the supercapacitor is connected to the power supply and used as a backup power supply.

Further, the metering unit is ATT7022EU, which integrates seven ADCs, wherein three ADCs are used for three-phase voltage sampling, three ADCs are used for three-phase current sampling, and communicate with the main control CPU through the SPI interface.

Further, the main control CPU is connected to the ESAM encryption module, which serves as a security authentication module of the device, and the upgrade of the device must be authenticated by the ESAM.

Further, the terminal is used for distribution transformer monitoring, station area topology identification, and active reporting of station area power outages.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model proposes an intelligent mobile battery protection terminal, which takes the main control CPU as the central core processor, integrates the remote measurement and remote control module, the 4G communication module and the power carrier module, and realizes the communication with the external power distribution main station through the 4G communication module. Uplink and downlink communication of the master station; obtain the three-phase voltage, three-phase current, zero-sequence current, power and electricity of the external low-voltage monitoring terminal through the metering unit, and realize the remote meter based on the cooperation of the carrier communication module, telemetry and remote control module, and 4G communication module The readings and the control and status monitoring of the external low-voltage monitoring terminal improve the function of the existing discrete power protection terminal monitoring device, which has a high degree of integration and takes up less space.

Description of drawings

Figure 1 is a schematic diagram of the module connection of this application.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model.

In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting , can also be detachably connected and set, or integrally connected and set. Those of ordinary skill in the art can understand the specific meanings of the above terms in this patent according to specific situations.

Please refer to Fig. 1, which is a structure of an embodiment provided by the present invention.

In order to achieve the above object, the technical scheme provided by the utility model is as follows:

An intelligent mobile power protection terminal, which is installed between a low-voltage monitoring terminal and an external master station, includes: a housing and a main circuit board arranged in the housing, and a power module and a main control CPU are integrated on the main circuit board , metering unit, telemetry and remote control unit, carrier communication module, and 4G communication module. powered by;

The main control CPU is connected to the metering unit, which obtains the three-phase voltage, three-phase current, zero-sequence current, power and electric quantity of the external low-voltage monitoring terminal through the metering unit;

The main control CPU is connected to the 4G communication module, which communicates with an external master station through the 4G communication module;

The main control CPU is connected to the carrier communication module, and the carrier communication module is connected to the low-voltage monitoring terminal for remote acquisition of various data;

The main control CPU is connected with the telemetry and remote control module, which realizes the signal telemetry and the remote control of opening and closing of the external low-voltage monitoring terminal through the telemetry and remote control module.

In a preferred embodiment, the external master station is a power distribution master station and a utility master station.

In a preferred embodiment, the main circuit board is integrated with a bluetooth module, and communicates with the operation and maintenance equipment through the bluetooth module.

In a preferred embodiment, the 4G communication module is integrated with a Beidou module for geographical location information collection and time synchronization.

In a preferred embodiment, the housing is provided with two maintenance interfaces, both of which are RJ45 interfaces, wherein one RJ45 interface is connected to the main control CPU through a 100M network connection, and the other RJ45 interface is connected to the main control CPU through a serial cable. Connect with the main control CPU, and connect with the handheld device through the RJ45 interface. It supports handheld devices to set parameters and read data on the spot, and has security measures such as authority and password management to prevent unauthorized personnel from operating and ensure the reliability of the device.

In a preferred embodiment, the model of the main control CPU is SCM701.

In a preferred embodiment, a supercapacitor is integrated on the main circuit board, and the supercapacitor is connected to the power supply and used as a backup power supply. When the main power supply of the terminal fails, the supercapacitor can be automatically and seamlessly switched on, and maintain the normal operation of the terminal and the terminal communication module for at least 3 minutes, and has the ability to communicate with the main station for 3 times to complete the data reporting.

In a preferred embodiment, the metering unit is ATT7022EU, which integrates seven ADCs, wherein, three ADCs are used for three-phase voltage sampling, and three ADCs are used for three-phase current sampling, through the SPI interface and the main control CPU to communicate.

In a preferred embodiment, the main control CPU is connected with an ESAM encryption module, which serves as a security authentication module of the device, and the upgrade of the device must be authenticated by the ESAM.

In a preferred embodiment, the terminal is used for distribution transformer monitoring, station area topology identification, and active reporting of station area power outages.

In addition, it should be noted that the battery-guaranteed terminal of this application has one wireless public network/wireless private network remote communication interface, and has the access capability of dual APN channels, supports 2/3/4G, and can evolve to 5G; Equipped with 1 RS-485, 2 RS-232/RS-485 switchable serial ports, 1 power line carrier communication interface/micro-power wireless communication interface, the transmission rate of RS-232/RS-485 interface can be selected as 9600bit/s, 19200bit /s; have at least 1 Ethernet port, 1 for master station communication or remote upgrade, 1 for local upgrade and maintenance, the interface rate is 10M/100Mbit/s self-adaptive; with 1 carrier communication module, the communication interface should be It supports UART and ETH at the same time, and the support rate is above 115200bps; it has 1 switch input interface, which can collect signals such as transformer gear position, circuit breaker position status, cabinet door opening and closing status, water level, smoke detection, etc.;

The remote communication of the intelligent mobile power protection terminal of this application supports Ethernet, 4G public network and micro-power wireless communication methods to send data to the master station of power distribution and the master station of energy consumption respectively, and downlink through power line carrier, RS-485 and electric energy meter and Once the device communicates, it supports remote upgrades. The peripheral function modules adopt dedicated communication, acquisition, measurement, control and other chips, and cooperate with low-power MCU to realize functions such as wireless communication, power line carrier communication, state quantity acquisition and control. The measurement adopts industrial-grade AC acquisition and measurement chip ATT7022E, which ensures the accuracy requirements in a wide temperature range.

Using the battery protection terminal of this application, the following functions can be realized:

(1) Distribution transformer monitoring

This application is equipped with analog acquisition functions such as voltage and current as standard, and can measure voltage, current, power, power factor, etc. It can collect the total three-phase voltage and current of the low-voltage terminal unit of the distribution transformer in real time (the interval is not more than 1s), and realize the following basic distribution transformer monitoring functions:

Three-phase voltage, current RMS and 2-19 harmonic components; voltage deviation, frequency deviation; three-phase voltage/current unbalance rate; voltage pass rate statistics; phase separation and three-phase active and reactive power, four-quadrant accumulation Electricity; station area variable load rate.

(2) Topology identification of station area

By installing an intelligent mobile power protection terminal on the low-voltage side of the distribution transformer in the station area, and cooperating with the portable low-voltage monitoring terminal installed at each node in the station area, the topological relationship of "transformer-outlet cabinet-branch box-meter box-electric meter" is automatically generated and the power supply phase is realized. The active discovery of abnormal information improves the accuracy of the low-voltage distribution network topology model and realizes the visualized management of the low-voltage network topology.

(3) Take the initiative to report power outages in the station area

Based on the installation of intelligent mobile power protection terminals + low-voltage monitoring terminals at each node two-level sensing equipment in the station area, real-time acquisition of power outages and power restoration events of monitoring objects such as distribution transformers, low-voltage monitoring terminals, and cable branch boxes is realized, and real-time monitoring of power outages Real-time analysis of faulty equipment location and outage impact range. After the power outage occurs, the platform side confirms the power outage fault point and fault range, does a good job of connecting the emergency power supply equipment to the client equipment, and quickly carries out power outage repair work.

(4) Power quality in the station area

The mobile power protection terminal can collect the three-phase voltage, current, power, harmonics, etc. of the distribution transformer low-voltage monitoring terminal in real time to realize the basic distribution transformer monitoring function. Whether the voltage of the three phases A, B, and C exceeds the limit and the heavy overload of the transformer, at the same time detect and report the distribution transformer phase loss, power failure, and power recovery events, and make early warning research and judgment on some sensitive data. Statistically analyze the voltage qualification rate of the distribution transformer, power outage time, metering forward and reverse active power, four-quadrant reactive power and other information. When there is an abnormality in the operation data of the equipment, the on-site power maintenance personnel will be promptly notified to deal with it.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the utility model Under the premise of the spirit and scope, the utility model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides an intelligent movement power protection terminal, its characterized in that, it is installed between low pressure monitor terminal and outside main website, and it includes: the power supply module supplies power by using an alternating current three-phase four-wire system to supply power to the main control CPU, the metering unit, the remote measuring and controlling module, the 4G communication module and the carrier communication module;

the main control CPU is connected with the metering unit and acquires three-phase voltage, three-phase current, zero-sequence current, power and electric quantity of an external low-voltage monitoring terminal through the metering unit;

the main control CPU is connected with the 4G communication module and is communicated with an external master station through the 4G communication module;

the master control CPU is connected with a carrier communication module, and the carrier communication module is in communication connection with the low-voltage monitoring terminal and is used for remotely acquiring various data;

the main control CPU is connected with the telemetering and remote control module, and the telemetering and remote control module is used for realizing signal telemetering, dividing and combining remote control on an external low-voltage monitoring terminal.

2. The intelligent mobile power protection terminal of claim 1, wherein the external master stations are a power distribution master station and a utilization master station.

3. The intelligent mobile power protection terminal as claimed in claim 1, wherein the main circuit board is integrated with a bluetooth module, and is in communication connection with the operation and maintenance equipment through the bluetooth module.

4. The intelligent mobile power protection terminal according to claim 1, wherein the 4G communication module is integrated with a Beidou module for collecting and timing geographic position information.

5. The intelligent mobile power protection terminal according to claim 1, wherein two maintenance interfaces are arranged on the housing, and both of the two maintenance interfaces are RJ45 interfaces, one of the RJ45 interfaces is connected with the main control CPU through a hundred mega network connection, and the other RJ45 interface is connected with the main control CPU through a serial port line and is connected with the handheld device through the RJ45 interface.

6. The intelligent mobile power-saving terminal as claimed in claim 1, wherein the model of the master CPU is SCM701.

7. The intelligent mobile power protection terminal according to claim 1, wherein a super capacitor is integrated on the main circuit board, and the super capacitor is connected with the power supply and used as a backup power supply.

8. The intelligent mobile power protection terminal according to claim 1, wherein the metering unit is ATT7022EU, and seven ADCs are integrated, wherein three ADCs are used for three-phase voltage sampling, and three ADCs are used for three-phase current sampling, and are communicated with the main control CPU through the SPI interface.

9. The intelligent mobile power protection terminal according to claim 1, wherein the main control CPU is connected to an ESAM encryption module, which serves as a security authentication module for the device, and the device upgrade needs to be authenticated by ESAM.

Images