Communication unit development method for power internet of things application scene

Abstract

The embodiment of the invention discloses a communication unit development method for power internet of things application scenes, and belongs to the technical field of power grid communication, and the method comprises the steps: designing a communication unit hardware framework of an HPLC carrier module, modulating communication parameters of a communication unit in the HPLC carrier module, and carrying out the pilot application in a plurality of different power internet of things application scenes. According to the method, electricity utilization information acquisition, power environment monitoring and power distribution information acquisition are realized, test verification is carried out according to acquired data information, configuration adjustment is carried out on an HPLC carrier module according to the test verification, and the configured and adjusted HPLC carrier module is installed at a target site for work application. According to the embodiment of the invention, the operation state of the communication resource, the service flow direction and the external environment change can be mastered in real time; internal data of the communication management system are deeply mined, and communication resource operation risks are automatically analyzed; service requirements are comprehensively observed, upgrading and reconstruction of a communication network are powerfully supported, and the investment utilization rate of communication resources is improved.

Description

Technical Field

[0001] The present application belongs to the field of power grid communication technology, and specifically, relates to a method for developing a communication unit for use in power Internet of Things application scenarios. Background Art

[0002] The power Internet of Things is an important part of the national industrial Internet. The construction of an efficient, secure and reliable perception layer has become an important construction task in the power industry. The realization of the data flow carried by the power Internet of Things is inseparable from the current wired and wireless Internet of Things technologies, such as optical fiber, power wireless private network, NB-IoT, 5G, HPLC, etc. HPLC is a high-speed power line carrier, also known as broadband power line carrier. It is a broadband power line carrier technology for data transmission on low-voltage power lines. The broadband power line carrier communication network uses power lines as a communication medium to realize the communication network of low-voltage power users' electricity information aggregation, transmission and interaction.

[0003] Power line carrier communication technology is a communication method exclusive to the power system. The transmission bandwidth and transmission distance of power line carrier technology can meet the needs of power distribution and utilization business. In the power system terminal communication access network, there are optical fiber, wireless and power line carrier communication and other technical means. Among them, optical fiber and wireless communication technology can realize full-duplex communication and support TCP / IP protocol. Carrier communication technology adopts half-duplex communication due to factors such as shared channel restrictions.

[0004] As the communication network of the power system tends to be networked, the service carrying protocol is compatible with the network protocol and the question-and-answer protocol and is mainly based on the network protocol. However, the medium-voltage power line carrier is only applicable to the question-and-answer protocol and its application in the terminal communication access network is limited. This puts forward the IP demand for the medium-voltage power line carrier communication technology.

[0005] At present, the analog modulated signal transmitted on the power line occupies a time domain length of about 100ms. Therefore, under the polling mechanism, the power line carrier channel is idle most of the time. With the increasing number of intelligent terminal devices on site, there will be problems such as carrier networking and mutual interference of frequency bands when multiple CCOs coordinate, which brings troubles to on-site construction and debugging. At the same time, the carrier equipment as a whole is still dominated by traditional serial communication, and has failed to achieve true IP and plug-and-play, and is still quite far from intelligence. Summary of the invention

[0006] In order to solve the above problems and technical defects, the embodiment of the present application adopts the following technical solution, a communication unit development method for power Internet of Things application scenario, comprising the following steps:

[0007] Step 1, designing the hardware framework of the communication unit of the HPLC carrier module, and modulating the communication parameters of the communication unit of the HPLC carrier module;

[0008] Step 2: Conduct pilot applications in multiple different power Internet of Things application scenarios to collect data information; wherein the data information includes: power consumption information, power environment monitoring data and power distribution information;

[0009] Step 3: test and verify the data information, adjust the configuration of the HPLC carrier module according to the test and verification results, and install the adjusted HPLC carrier module at the target location for working application.

[0010] Preferably, the hardware framework includes: a three-phase circuit, a control unit, a memory and an interface circuit;

[0011] Each phase circuit in the three-phase circuit includes: a signal coupling circuit, a signal input filtering circuit, a signal output amplifying filtering circuit and a HPGP chip.

[0012] Further, each phase circuit in the three-phase circuit is electrically connected to the control unit, the control unit is electrically connected to the memory and the interface circuit respectively, and the interface circuit is electrically connected to one of the three-phase circuits;

[0013] The output end of the signal coupling circuit in each phase circuit is electrically connected to the input end of the signal input filter circuit, the input end of the signal coupling circuit is electrically connected to the output end of the signal output amplification filter circuit, the input end of the signal output amplification filter circuit is electrically connected to the output end of the HPGP chip, the output end of the signal input filter circuit is electrically connected to the input end of the HPGP chip, and the HPGP chip is electrically connected to the interface circuit and the control unit respectively.

[0014] Furthermore, when each phase circuit in the three-phase circuit receives the power line carrier signal after signal coupling processing, it inputs the signal received at the remote end into the signal input filter circuit for filtering processing, and after calculation processing, it inputs it into the interface circuit, and then is controlled by the control unit to send the signal to the external circuit for communication.

[0015] Furthermore, when the interface circuit receives an external data signal, the control unit performs control and calculation processing, and transmits the processed external data signal to the signal output amplification and filtering circuit for signal amplification and filtering. The effective signal is coupled to the single-phase power line in the three-phase circuit through the signal coupling circuit, thereby realizing communication with the remote STA.

[0016] Furthermore, the communication parameters are modulated using OFDM modulation, and the interface circuit is a universal asynchronous receiver-transmitter or an Ethernet interface;

[0017] If the Ethernet interface is used for communication, the interface communication rate is 1 Mbps, and the frame format uses the homeplug universal protocol frame;

[0018] If asynchronous receiver / transmitter communication is adopted, the interface communication rate is 9600bps, and the frame format has one start bit, eight data bits, one parity bit and one stop bit.

[0019] Preferably, the power consumption information includes high-frequency power consumption information data based on the HPLC carrier module;

[0020] Power environment monitoring data include: environmental monitoring data of important places;

[0021] The power distribution information includes: terminal information data of gateway meters and low voltage fault monitoring units.

[0022] Furthermore, the power consumption information includes high-frequency power consumption information data based on the HPLC carrier module, specifically including:

[0023] Through power consumption data from distribution transformers and end users, as well as power consumption monitoring, load management and line loss analysis;

[0024] The terminal based on HPLC carrier module communicates downward through HPLC high-speed carrier to communicate data, collect information, perform command control and intelligent data analysis on edge devices;

[0025] The HPLC carrier module collects electricity consumption data information at the minute level to monitor the user's electricity consumption in real time and realize load forecasting;

[0026] The HPLC carrier module is installed inside the device and is the slave node in the carrier communication, uploading the power consumption information to the upper-level device;

[0027] The upper device is installed with CCO carrier module, which is the master node in carrier communication and performs carrier communication with the slave node.

[0028] Furthermore, the power environment monitoring data includes equipment monitoring data and working environment data of various station buildings;

[0029] The power environment monitoring data is uploaded to the IoT agent device via HPLC carrier communication for intelligent data analysis and environmental early warning.

[0030] Furthermore, the power distribution information is data obtained by collecting data from low-voltage fault units, gateway meters, and intelligent power distribution terminals in the power distribution environment; the power distribution information includes three-phase voltage information, current information, active power, and reactive power information.

[0031] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0032] This application first verifies the basic functions of the HPLC communication unit on the concentrator or IoT gateway; then verifies the ability of the on-site carrier unit equipment monitoring system to monitor access points online at the same time; finally, builds a typical business scenario based on actual business needs, achieves wide coverage of HPLC carrier communication, collects various types of IoT terminals and their business data, and realizes reliable communication of various power services. Through the development of big data application scenarios for the power communication network, it is possible to grasp the operating status of communication resources, business flows, and external environment changes in real time; deeply mine the internal data of the communication management system, and automatically analyze the operating risks of communication resources; comprehensively observe business needs, strongly support the upgrading and transformation of the communication network, and improve the investment utilization rate of communication resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the attached picture:

[0034] Figure 1 A schematic diagram of the method steps of an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the HPLC communication unit of an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a carrier communication method according to an embodiment of the present application;

[0037] Figure 4 This is a new type II concentrator carrier communication architecture diagram of an embodiment of the present application;

[0038] Figure 5 This is a diagram of the carrier communication architecture of a Type II collector according to an embodiment of the present application;

[0039] Figure 6 This is the new type II collector connection method of the embodiment of the present application;

[0040] Figure 7 A schematic diagram of a power monitoring scenario in an embodiment of the present application;

[0041] Figure 8 This is the power distribution information collection scenario of the embodiment of the present application;

[0042] Fig. 9 This is a multi-business scenario architecture diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Example 1

[0045] like Figure 1 and Figure 2 As shown, a communication unit development method for a power Internet of Things application scenario includes:

[0046] Design the hardware framework of the communication unit of the HPLC carrier module and modulate the communication parameters of the communication unit in the HPLC carrier module;

[0047] The hardware framework includes: three-phase circuit, control unit, memory and interface circuit;

[0048] Each phase circuit in the three-phase circuit includes: a signal coupling circuit, a signal input filtering circuit, a signal output amplifying filtering circuit and a HPGP chip.

[0049] Each phase circuit in the three-phase circuit is electrically connected to the control unit, the control unit is electrically connected to the memory and the interface circuit respectively, and the interface circuit is also electrically connected to one of the three-phase circuits;

[0050] The output end of the signal coupling circuit in each phase circuit is electrically connected to the input end of the signal input filter circuit, the input end of the signal coupling circuit is electrically connected to the output end of the signal output amplification filter circuit, the input end of the signal output amplification filter circuit is electrically connected to the output end of the HPGP chip, the output end of the signal input filter circuit is electrically connected to the input end of the HPGP chip, and the HPGP chip is electrically connected to the interface circuit and the control unit respectively.

[0051] When each phase circuit in the three-phase circuit receives the power line carrier signal after signal coupling processing, it will input the signal received at the remote end into the signal input filter circuit for filtering processing, and then input it into the interface circuit after calculation processing, and then controlled by the control unit to send the signal to the external circuit for communication. The three-phase circuit can communicate simultaneously.

[0052] When the interface circuit receives the external data signal, the control unit will control and calculate it, and transmit the processed external data signal to the signal output amplification and filtering circuit for signal amplification and filtering. The effective signal is then coupled to the single-phase power line in the three-phase circuit through the signal coupling circuit to achieve communication with the remote STA. The external data signal is the remote control signal of the IoT management center.

[0053] The communication parameters are modulated by OFDM modulation, and the interface circuit is one of a universal asynchronous receiver-transmitter or an Ethernet interface, capable of full-duplex data exchange with external devices;

[0054] If Ethernet communication is used, the interface communication rate is 1 Mbps, and the frame format uses the homeplug universal protocol frame;

[0055] If asynchronous receiver / transmitter communication is adopted, the interface communication rate is 9600bps, and the frame format has one start bit, eight data bits, one parity bit and one stop bit.

[0056] Carry out pilot applications in multiple different power IoT application scenarios to realize power consumption information collection, power environment monitoring and power distribution information collection, and conduct tests and verifications based on the collected data information;

[0057] The pilot application is to deploy multiple HPLC carrier communication devices for pilot application. The application scenarios are as follows: Figure 7 As shown, it can be a fire protection system, a security guard subsystem, an access control subsystem, an environmental monitoring subsystem, a micro-meteorological subsystem and an online detection subsystem;

[0058] Fire detection sensors, fire alarm sensors, electronic fences, sirens, access control, DC power supplies, UPS, batteries, temperature and humidity sensors, smoke sensors, light sensors, gas sensors, rain gauges, anemometers, transformers, circuit breakers and switch cabinets are installed in these scenarios. These devices are connected to controllers, information collectors or monitoring devices, and then the controllers, information collectors or monitoring devices are connected to edge IoT proxy devices via HPLC carrier communication, and then connected to the IoT management center via the edge IoT proxy devices to achieve physical control.

[0059] Electricity consumption information collection is based on the high-frequency electricity consumption information data collection of the HPLC carrier module;

[0060] Power environment monitoring data include: environmental monitoring information of important places;

[0061] The power distribution information includes: collecting and analyzing the terminal information data of the gateway meter and low-voltage fault monitoring unit.

[0062] The power consumption information includes high-frequency power consumption information data based on the HPLC carrier module, including: power consumption data of distribution transformers and end users, as well as power consumption monitoring, load management and line loss analysis, ultimately achieving automatic meter reading, peak-shifting power consumption, power consumption inspection, load forecasting and power cost saving;

[0063] The terminal based on the HPLC carrier module realizes data communication, information collection, command control and data intelligent analysis of edge devices through HPLC high-speed carrier communication.

[0064] The HPLC carrier module collects electricity consumption data information at the minute level to monitor the user's electricity consumption in real time, thereby realizing load forecasting;

[0065] The STA module sends the collected power consumption information to the upper-level IoT agent device to achieve data edge aggregation.

[0066] The STA module frames the electricity usage information collected by the new Type II concentrator, and 8 pieces of meter information form a frame, which is sent to the edge IoT agent via the HPLC high-speed carrier.

[0067] The edge IoT agent device is installed by installing an HPLC carrier module or connecting multiple carrier communication units.

[0068] The HPLC carrier module is installed inside the device and is the slave node of the carrier communication, uploading the power consumption information to the upper-level device;

[0069] The upper device is equipped with a CCO carrier module, which is the master node of the carrier communication and performs carrier communication with the slave nodes;

[0070] After the edge device performs preliminary analysis and processing on the data, it uploads it to the "Internet of Things Management Platform".

[0071] Power environment monitoring is based on the equipment characteristics and working environment of various station buildings, and realizes remote measurement, remote signaling, remote control and remote adjustment of the intelligent and non-intelligent equipment of the communication power supply, battery pack, UPS, generator, air conditioner, as well as temperature, humidity, smoke, ground water and access control environment in the station;

[0072] HPLC carrier communication is used to collect information from various sensors, detectors and switch quantities in the environment. After the environmental monitoring quantities are collected, they are uploaded to the IoT agent device for intelligent data analysis and environmental early warning.

[0073] Distribution information collection is the collection of key data from low-voltage fault units, gateway meters, and intelligent distribution terminals in the distribution environment, including three-phase voltage information, current information, active and reactive information. It is connected through power cables and uses HPLC carrier communication to achieve high-frequency collection of distribution data.

[0074] The HPLC carrier module is configured and adjusted according to the test verification, and the HPLC carrier module after the configuration adjustment is installed at the target location for working application. The target location is the indoor or outdoor location where the fire protection application, security guard, access control protection, outdoor environment monitoring, and meteorological monitoring are located, that is, the important places mentioned above.

[0075] Example 2

[0076] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the figure, the user electricity consumption information collection system collects and analyzes the electricity consumption data of distribution transformers and end users, realizes electricity consumption monitoring, promotes tiered pricing, load management, and line loss analysis, and ultimately achieves the goals of automatic meter reading, peak-shifting electricity consumption, electricity consumption inspection (anti-electricity theft), load forecasting, and saving electricity costs.

[0077] The terminal based on the HPLC carrier module realizes data communication, information collection, command control, data intelligent analysis and other functions for edge-side devices through the HPLC high-speed carrier communication method.

[0078] The HPLC communication unit can collect electricity data information at the minute level, monitor the user's electricity consumption in real time, and then realize load forecasting. The STA module sends the collected electricity information to the upper-level IoT agent device to achieve data edge convergence. The STA module frames the electricity information collected by the new II type concentrator, and 8 pieces of electricity meter information form a frame, which is sent to the edge IoT agent through the HPLC high-speed carrier.

[0079] The edge IoT agent device is installed by installing an HPLC carrier module (CCO-main carrier node module) or connecting multiple carrier communication units.

[0080] The HPLC carrier module (STA-carrier slave node) is installed inside the device and is the slave node of the carrier communication. The upper device is installed with the CCO carrier module, which is the master node and performs carrier communication with the slave device STA. The terminal uploads the power consumption information to the upper device through the STA carrier module; the edge device performs preliminary analysis and processing on the data and then uploads it to the "Internet of Things Management Platform".

[0081] The edge IoT agent performs data communication, information collection, command control, and intelligent data analysis for edge devices, and is equipped with a CCO carrier master node module.

[0082] The new Type II concentrator collects electricity consumption information data from smart meters, and then sends it to the IoT agent via HPLC carrier communication. It has a built-in STA carrier slave node module.

[0083] The Type I concentrator is used to send, receive and aggregate data sent by the new Type II collector using the HPLC carrier communication method, and is equipped with a CCO carrier main node module.

[0084] The new Type II collector collects electricity consumption information data from smart meters, and then sends it to the Type I concentrator via HPLC carrier communication. It has a built-in STA carrier slave node module.

[0085] The new type II concentrator terminal based on the STA carrier module collects real-time power consumption information of smart meters in the substation through 485; and through the STA carrier module and 4G communication module, it realizes dual transmission of power consumption information, which is uploaded to the main station and the Internet of Things management platform respectively; completes the collection of power consumption information at the minute level with higher accuracy and higher frequency; and provides data support for high-speed real-time collection of power consumption information for energy management and load control.

[0086] HPLC high-speed broadband carrier communication is used between the master device and the slave device; CCO can perform two-way concurrent carrier communication with multiple STAs.

[0087] In the electricity consumption information collection system in the smart grid architecture, one meter reading method is that the type II collector is connected to the RS485 interface of the meter through an RS485 line, and the concentrator and the type II collector adopt carrier communication.

[0088] The structure and function of the Type II collector are simple, the cost is low, and it can meet the needs of electricity consumption information collection for meters without modules. It is widely used in electricity consumption information collection systems. Usually, the Type II collector is used as a supplement to meters without modules and as an external module of the meter.

[0089] The terminal is used to collect electric energy information from multiple electric energy meters and can exchange data with type I concentrators; the terminal is connected to the RS485 interface of the electric energy meter for communication and uses HPLC power carrier communication with the upper-level device type I concentrator.

[0090] The new II-type collector can store the collected electricity meter electricity usage information, such as daily freeze, monthly freeze, 15-minute collection, especially minute-level data; and can frame and package the information of multiple meters and multiple data items, and forward it to the superior equipment concentrator, or directly forward the commands and data between the concentrator and the electricity meter, to realize minute-level collection of electricity usage information and ensure that important information is not lost.

[0091] The new II-type collector can receive the meter data reading and control instructions sent by the concentrator through the uplink channel, forward it to the connected meter in real time, and then send the meter's response data information back to the concentrator. The new II-type collector supports the concentrator to forward all meter data reading (including extended data identification set), broadcast time calibration and other instructions.

[0092] The new type II collector obtains the meter address by using a wildcard to read the meter communication address, so that the new type II collector is equivalent to a carrier communication module of the meter, and the new type II collector is equivalent to a sub-node in the carrier communication network to form a network with other nodes; or the new type II collector is connected to multiple meters, the address of the new type II collector needs to be entered into the system, and all the meter addresses are matched one by one with the address of the new type II collector, and recorded and entered into the system manually, and the new type II collector is equivalent to a relay node in the carrier communication network to form a network with other nodes.

[0093] The new type II collector terminal communicates with the superior device type I concentrator via HPLC carrier; receives and responds to commands from the type I concentrator, transmits data to the concentrator, and uses carrier concurrent mode communication to improve HPLC channel utilization.

[0094] 1) Expand and add minute-level data: The new type II collector collects the electricity consumption data of the meter every minute through 485. After collection, the meter data is combined into a data frame, packaged and forwarded through the HPLC carrier form.

[0095] 2) Relay forwarding: The new type II collector supports communication relay forwarding between the concentrator and other collectors.

[0096] 3) Communication conversion: the new type II collector can convert the communication mode and communication protocol of the upper and lower channels.

[0097] 4) There are security protection measures for the transmission of important data.

[0098] Power consumption data upload based on carrier HPLC module: The communication medium of STA carrier module is power cable, which is a broadband power line carrier technology for data transmission on low-voltage power lines. The broadband power line carrier communication network uses power lines as the communication medium to realize the communication network of low-voltage power users' power consumption information aggregation, transmission and interaction.

[0099] Example 3

[0100] like Figure 7 As shown, the power environment acquisition system is based on the equipment characteristics and working environment of various station buildings (including distribution station buildings, communication rooms, base stations, etc.), and realizes the functions of "telemetry, telesignaling, remote control, and remote adjustment" for the communication power supply, battery pack, UPS, generator, air conditioner and other intelligent and non-intelligent equipment in the station, as well as environmental quantities such as temperature and humidity, smoke, ground water, and access control.

[0101] Through the various sensors, detectors and switch quantities in the environment, information is collected by HPLC carrier communication. After the various environmental monitoring quantities are collected, they are uploaded to the IoT agent device for data intelligent analysis and environmental early warning.

[0102] Data collection is to realize the monitoring of city power, distribution switch, UPS and other power data; to realize the collection of environmental data such as temperature, humidity, water immersion, etc.; to realize the collection of safety and fire protection system data.

[0103] Abnormal discovery and alarms enable intelligent analysis of on-site data collection, provide early warning of abnormal data, and provide multiple alarm modes so that users can accurately locate the alarm location.

[0104] Remote intelligent control realizes intelligent linkage and control of on-site air conditioners, switches, and IoT platforms.

[0105] Example 4

[0106] like Figure 8 and Fig. 9 As shown in the figure, the power distribution information collection system collects key data for low-voltage fault units, gateway meters, intelligent distribution terminals and other equipment in the power distribution environment, including three-phase voltage information, current information, active and reactive power information, etc. Such equipment is connected through power cables and uses HPLC carrier communication to achieve high-frequency collection of power distribution data.

[0107] The intelligent substation master station system adopts multi-dimensional analysis or intelligent analysis technology of distribution substation informationization, and adopts intelligent distribution transformer terminals, power consumption information collection terminals, and intelligent energy meters with modular, plug-and-play, and integrated technologies. Through the collection and monitoring of substation-distribution transformer-user power consumption information, low-voltage distribution network statistical analysis, economic operation analysis, power quality management, distributed power supply access, interactive management, asset management and other application analysis and comprehensive intelligent management functions.

[0108] Through the low-voltage carrier topology file sent by the terminal, the actual number of devices is analyzed and counted according to the substation-branch line-meter box hierarchical structure.

[0109] The intelligent distribution transformer terminal integrates user power outage information, distribution low-voltage line and branch fault information to achieve active perception and positioning of low-voltage faults.

[0110] The master station further confirms the fault event based on the fault file sent by the terminal and the medium voltage related information, and sends it to the power supply service command system.

[0111] The above-mentioned embodiments only express the preferred implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A communication unit development method for power Internet of Things application scenarios, characterized in that: The following steps are involved: Step 1, designing the hardware framework of the communication unit of the HPLC carrier module, and modulating the communication parameters of the communication unit of the HPLC carrier module; Step 2: Conduct pilot applications in multiple different power Internet of Things application scenarios to collect data information; wherein the data information includes: power consumption information, power environment monitoring data and power distribution information; Step 3: test and verify the data information, adjust the configuration of the HPLC carrier module according to the test and verification results, and install the adjusted HPLC carrier module at the target location for working application.

2. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 1, characterized in that: The hardware framework includes: a three-phase circuit, a control unit, a memory and an interface circuit; Each phase circuit in the three-phase circuit includes: a signal coupling circuit, a signal input filtering circuit, a signal output amplifying filtering circuit and a HPGP chip.

3. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 2, characterized in that: Each phase circuit in the three-phase circuit is electrically connected to the control unit, the control unit is electrically connected to the memory and the interface circuit respectively, and the interface circuit is electrically connected to one of the three-phase circuits; The output end of the signal coupling circuit in each phase circuit is electrically connected to the input end of the signal input filter circuit, the input end of the signal coupling circuit is electrically connected to the output end of the signal output amplification filter circuit, the input end of the signal output amplification filter circuit is electrically connected to the output end of the HPGP chip, the output end of the signal input filter circuit is electrically connected to the input end of the HPGP chip, and the HPGP chip is electrically connected to the interface circuit and the control unit respectively.

4. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 3, characterized in that: When each phase circuit in the three-phase circuit receives the power line carrier signal after signal coupling processing, it inputs the signal received at the remote end into the signal input filter circuit for filtering processing, and inputs it into the interface circuit after calculation processing, and then is controlled by the control unit to send the signal to the external circuit for communication.

5. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 4, characterized in that: When the interface circuit receives the external data signal, the control unit controls and calculates it, and transmits the processed external data signal to the signal output amplification and filtering circuit for signal amplification and filtering. The effective signal is coupled to the single-phase power line in the three-phase circuit through the signal coupling circuit to realize communication with the remote STA.

6. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 5, characterized in that: The communication parameters are modulated using OFDM modulation, and the interface circuit is a universal asynchronous receiver-transmitter or an Ethernet interface; If the Ethernet interface is used for communication, the interface communication rate is 1 Mbps, and the frame format uses the homeplug universal protocol frame; If asynchronous receiver / transmitter communication is adopted, the interface communication rate is 9600bps, and the frame format has one start bit, eight data bits, one parity bit and one stop bit.

7. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 1, characterized in that: The power consumption information includes high-frequency power consumption information data based on the HPLC carrier module; Power environment monitoring data include: environmental monitoring data of important places; The power distribution information includes: terminal information data of gateway meters and low voltage fault monitoring units.

8. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 7, characterized in that: The power consumption information includes high-frequency power consumption information data based on the HPLC carrier module, specifically including: Through power consumption data from distribution transformers and end users, as well as power consumption monitoring, load management and line loss analysis; The terminal based on HPLC carrier module communicates downward through HPLC high-speed carrier to communicate data, collect information, perform command control and intelligent data analysis on edge devices; The HPLC carrier module collects electricity consumption data information at the minute level to monitor the user's electricity consumption in real time and realize load forecasting; The HPLC carrier module is installed inside the device and is the slave node in the carrier communication, uploading the power consumption information to the upper-level device; The upper device is installed with CCO carrier module, which is the master node in carrier communication and performs carrier communication with the slave node.

9. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 7, characterized in that: The power environment monitoring data includes equipment monitoring data and working environment data of various station buildings; The power environment monitoring data is uploaded to the IoT agent device via HPLC carrier communication for intelligent data analysis and environmental early warning.

10. A method for developing a communication unit for an electric power Internet of Things application scenario according to claim 7, characterized in that: The power distribution information is data obtained by collecting data from low-voltage fault units, gateway meters, and intelligent power distribution terminals in the power distribution environment; the power distribution information includes three-phase voltage information, current information, active power, and reactive power information.

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