Power line carrier networking reading control device and control method thereof

Abstract

The invention discloses a power line carrier networking reading control device and a control method thereof, the reading control device interacts with a carrier communication module in a power line network by adopting a carrier communication mode, and the reading control device comprises a connecting component used for accessing the reading control device to the power line network through a power line connection mode or a magnetic ring coupling connection mode; the communication interface component comprises a wired network interface and a wireless network interface and is used for realizing connection between the reading control device and external equipment; the carrier wave processing module is used for searching the carrier wave module, establishing connection with the carrier wave module and collecting data on a power line after the reading control device is accessed to the power line network; the transformer area identification module is used for identifying whether the to-be-observed station belongs to the transformer area and the phase of the to-be-observed station; and the signal testing module is used for sending the characteristic signal and collecting noise data so as to test signal attenuation on the power line. According to the invention, faults in a complex and deepened application transformer area can be efficiently searched, and the problem that the networking level is too high is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a power carrier networking copy control device and a control method thereof. Background Art

[0002] In the traditional mode, manual meter reading relies on meter readers to check each user's meter one by one every month. This method has many disadvantages. From the perspective of human and material resource consumption, a large amount of manpower costs need to be invested, and the allocation of material resources is also cumbersome, such as the frequent use of transportation equipment and meter reading tools. From the analysis of data collection characteristics, its time span is large, usually in months, which makes it difficult to ensure the real-time nature of the data and cannot reflect the dynamic changes of users' electricity consumption in a timely manner. Moreover, since manual operation is easily affected by subjective factors (such as visual errors and recording errors of meter readers) and objective environment (such as bad weather affecting meter reading trips and meter reading accuracy), the accuracy of collected data is low, which makes it difficult to meet the strict requirements of modern power systems for data "periodicity, real-time, and accuracy". Obviously, the traditional manual meter reading method has lagged behind the rapid development of modern society, and more efficient and accurate meter reading methods are urgently needed.

[0003] As a key component of the modern power system, the remote automatic meter reading system works by automatically completing the metering of data such as electricity at the power grid user terminal, and automatically transmitting these metering data back to the control center according to the preset cycle. The control center then records and deeply analyzes these massive data, and implements subsequent key functions such as formulation of optimization scheduling strategies, precise control command issuance, and reasonable billing and accounting based on the analysis results, thereby ensuring the stable, efficient and economical operation of the power system.

[0004] At present, the scope of meter reading systems and technical methods mainly covers wired meter reading systems, handheld meter reading systems, and wireless meter reading systems. However, in the actual application scenarios of low-voltage area carrier networking, especially in the on-site installation and commissioning stage of the centralized meter reading system and the subsequent long-term on-site maintenance, there is a technical problem that needs to be solved urgently: the current technical solution cannot accurately present the hierarchical structure of the network of the area, and there is a lack of effective identification and positioning technology for those unstable nodes in the tree-like networking structure that have poor stability and are prone to data transmission failures or signal interruptions. This not only increases the difficulty and complexity of on-site installation and commissioning, prolongs the construction period, and increases the construction cost, but also in the long-term operation and maintenance process, once the meter reading data is abnormal or the communication failure occurs, the problem node cannot be quickly and accurately located, which will lead to a longer maintenance response time, reduce the reliability and stability of the power supply service, and seriously affect the operating efficiency of power companies and the user's power experience. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a power carrier networking control device and a control method thereof, so as to accurately display the networking level of the substation and the unstable nodes in the tree networking structure.

[0006] In order to solve the above technical problems, the present invention provides a power carrier networking control device, which uses a carrier communication method to interact with a carrier communication module in a power line network, including:

[0007] A connecting component, used to connect the reading control device to the power line network through a power line connection method or a magnetic ring coupling connection method;

[0008] Communication interface components, including wired network interface and wireless network interface, are used to connect the copy control device with external equipment;

[0009] A carrier processing module, used to search for the carrier module, establish a connection with the carrier module, and collect data on the power line after the copy control device is connected to the power line network;

[0010] The station area identification module is used to identify whether the station to be observed belongs to this station area and the phase it is in;

[0011] The signal test module is used to send characteristic signals and collect noise data to test signal attenuation on the power line.

[0012] Preferably, the carrier processing module specifically includes:

[0013] The carrier network search module is used to search for the existence of a carrier local end or terminal module after the copy control device is connected to the power line network;

[0014] A carrier module connection module is used to select a corresponding carrier module for connection according to the search results after the carrier network search is completed;

[0015] The data acquisition module is used to collect data on the power line through a storage acquisition method or a real-time acquisition method.

[0016] Preferably, the storage acquisition method is to collect noise or signals on the power line and store the data in a TF card, and the real-time acquisition method is to collect noise or signals on the power line and store the data in a PC through predetermined software.

[0017] Preferably, the signal testing module analyzes the power line attenuation by sending a characteristic signal at one end of the power line and collecting noise data at the other end; the signal sending of the signal testing module includes a mode of stopping signal sending to cool down, a high-power signal sending mode and a low-power signal sending mode.

[0018] The present invention also provides a control method for a power carrier networking copy control device, comprising:

[0019] After the meter reading and control device is connected to the power line network, the carrier frequency band in the power line network is scanned to detect whether there is a carrier local end or terminal module;

[0020] Based on the carrier network search results, select the carrier module for connection according to signal strength, stability and preset connection priority rules;

[0021] Collect data on the power line by means of storage collection or real-time collection;

[0022] Through the cooperation of the area identification transmitter and the copy control device as a receiver, it is possible to identify whether the site to be observed belongs to this area and the phase it is in;

[0023] By sending characteristic signals at one end of the power line and collecting noise data at the other end to analyze the power line attenuation, effective control and analysis of the power carrier network can be achieved.

[0024] Preferably, the storage acquisition method is to collect noise or signals on the power line and store the data in a TF card, and the real-time acquisition method is to collect noise or signals on the power line and store the data in a PC through predetermined software.

[0025] Preferably, the storage and collection method adopts cyclic storage, and the collected data is time-stamped and stored in categories.

[0026] Preferably, the signal transmission mode includes a mode of stopping signal transmission to reduce temperature, a high-power signal transmission mode and a low-power signal transmission mode.

[0027] Preferably, when it is detected that the temperature of the single board has risen to a level close to or exceeding a preset safety threshold, it automatically switches to a mode of stopping signal sending to cool down the board, and starts a heat dissipation mechanism to reduce the temperature of the single board.

[0028] Preferably, when selecting a carrier module for connection, it also includes performing handshake communication with the selected carrier module to establish a stable data transmission link.

[0029] The implementation of the present invention has the following beneficial effects: the meter reading and control device of the present invention can build a reliable data connection with the carrier communication module by means of the low-voltage power line, implement meter reading and control operations on the carrier communication module in a half-duplex communication mode, and is compatible with the DL / T645 protocol. It can flexibly select the way to access the power line network according to the on-site environment, and different terminal devices can also select an adaptive network interface to connect to the meter reading and control device. In the low-voltage area carrier networking scenario, it can accurately present the networking level of the area, accurately locate the unstable nodes in the tree networking structure, and then find the corresponding table module and high-frequency unstable equipment. With the help of PAD and analyzer WIFI connection on site, the operation and maintenance personnel can efficiently find faults in complex and in-depth application areas, effectively solve the problem of too high networking level, and achieve the goal of high-frequency stable meter reading, which greatly improves the stability, reliability and operation and maintenance efficiency of the power meter reading system, reduces the operation and maintenance cost and troubleshooting difficulty, and provides a strong guarantee for the smooth operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 The present invention is a schematic diagram of an implementation structure of a power carrier networking control device according to an embodiment of the present invention.

[0032] Figure 2 The figure is a flow chart of a control method of a power carrier networking control device according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following descriptions of the embodiments are with reference to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented. In the description of the present invention, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0034] Please refer to Figure 1 As shown, an embodiment of the present invention provides a power carrier networking control device, which uses a carrier communication method to interact with a carrier communication module in a power line network, including:

[0035] A connecting component, used to connect the reading control device to the power line network through a power line connection method or a magnetic ring coupling connection method;

[0036] Communication interface components, including wired network interface and wireless network interface, are used to connect the copy control device with external equipment;

[0037] A carrier processing module, used to search for the carrier module, establish a connection with the carrier module, and collect data on the power line after the copy control device is connected to the power line network;

[0038] The station area identification module is used to identify whether the station to be observed belongs to this station area and the phase it is in;

[0039] The signal test module is used to send characteristic signals and collect noise data to test signal attenuation on the power line.

[0040] Specifically, in the embodiment of the present invention, the connection component is specifically a power line connection component. Through the power line with a clamp connector, the copy control device can be connected to the power line network to realize the power output of the power line network to the copy control device, and at the same time serve as a carrier communication path between the copy control device and the carrier module in the power line network. In some special cases, if the copy control analysis device cannot be directly connected to the power line network through the power line, it can be connected to the power line network using a magnetic ring coupling method, that is, the connection component can also be a magnetic ring coupler external to the copy control device.

[0041] The communication interface component includes a wired network interface and a wireless network interface. The wired network interface can be an RJ45 Ethernet port. The network port of the copy control device and the network port of the PC terminal are connected through an Ethernet cable to achieve connection with the copy control device. The wireless network interface can be a WIFI wireless network interface. Through the WIFI wireless signal, a terminal device that supports WIFI (such as a portable PC or a smart mobile terminal) is wirelessly connected to the WIFI network of the copy control device to achieve connection with the copy control device.

[0042] The carrier processing module specifically includes:

[0043] The carrier network search module is used to search for the existence of a carrier local end or terminal module after the copy control device is connected to the power line network;

[0044] A carrier module connection module is used to select a corresponding carrier module for connection according to the search results after the carrier network search is completed;

[0045] The data acquisition module is used to collect data on the power line, and supports two modes: storage acquisition and real-time acquisition. Storage acquisition refers to collecting noise or signals on the power line and storing the data in a TF card, and real-time acquisition refers to collecting noise or signals on the power line and storing the data in a PC through specific software.

[0046] The area identification module cooperates with the copy control device as the receiver through the area identification transmitter for identification, and the receiver gives prompts through the buzzer and LCD after successful identification. The buzzer "beeps" for 1s and the LCD displays the characters "area number + phase + receiving gear".

[0047] The signal test module analyzes the power line attenuation by sending a characteristic signal at one end of the power line and collecting noise data at the other end. The signal transmission of the signal test module is divided into the following three modes:

[0048] Mode 0 displays "SG0": used to stop signal sending to reduce the board temperature and avoid device damage;

[0049] Mode 1 displays "SG1" and is used for high-power signal transmission;

[0050] Mode 2 displays "SG2" and is used for low-power signal transmission.

[0051] The copy control device of the embodiment of the present invention is implemented by a low-voltage power line carrier communication chip, establishes a reliable data connection with the carrier communication module through the low-voltage power line, and uses a half-duplex communication method to perform copy control operations on the carrier communication module. It is compatible with the DL / T 645 protocol and can select a corresponding method to access the power line network according to the on-site environment, so as to accurately display the networking level of the substation and the unstable nodes in the tree networking structure when the low-voltage substation carrier is networked.

[0052] Please refer to Figure 2 As shown, corresponding to the power carrier networking copy control device in the above-mentioned embodiment 1 of the present invention, the second embodiment of the present invention further provides a control method for the power carrier networking copy control device, including the following steps:

[0053] After the meter reading and control device is connected to the power line network, the carrier frequency band in the power line network is scanned to detect whether there is a carrier local end or terminal module;

[0054] Based on the carrier network search results, select the carrier module for connection according to signal strength, stability and preset connection priority rules;

[0055] Collect data on the power line by means of storage collection or real-time collection;

[0056] Through the cooperation of the area identification transmitter and the copy control device as a receiver, it is possible to identify whether the site to be observed belongs to this area and the phase it is in;

[0057] By sending characteristic signals at one end of the power line and collecting noise data at the other end to analyze the power line attenuation, effective control and analysis of the power carrier network can be achieved.

[0058] The following is a detailed description of each step of the embodiment of the present invention.

[0059] (I) Carrier network search initialization

[0060] When the power carrier network reading and control device is connected to the power line network, the carrier network search is immediately started. The built-in carrier network search module of the device starts working, scanning the carrier frequency band in the power line network to detect whether there is a characteristic signal emitted by the carrier's local or terminal module. During this process, the carrier network search module will search according to the preset frequency range and signal strength threshold to ensure that potential carrier module signals can be accurately discovered, providing a basis for subsequent connection operations.

[0061] (II) Intelligent carrier module connection selection

[0062] After completing the carrier network search, the carrier module connection module of the copy control device will analyze and evaluate the searched carrier module signal. According to the signal strength, stability and pre-set connection priority rules, the most suitable carrier module is selected from multiple search results for connection. For example, if there are multiple carrier modules with similar signal strengths, the carrier module connection module will give priority to connecting with a module with a lower bit error rate or better compatibility with the copy control device to ensure the reliability and efficiency of subsequent data transmission. During the connection process, the carrier module connection module will perform handshake communication with the selected carrier module to establish a stable data transmission link.

[0063] 3. Diversified data collection and execution

[0064] Storage and acquisition mode: When the storage and acquisition function is started in the copy control device, its built-in data acquisition sensor starts to monitor and collect the noise and signals on the power line in real time. After preliminary processing and filtering, the collected data is stored in the built-in TF card of the device. In order to ensure the integrity and accuracy of the data, a circular storage method is used during the storage process. When the storage space of the TF card is close to saturation, the earliest stored data is automatically overwritten. At the same time, the collected data is time-stamped and classified for storage, which is convenient for subsequent data query and analysis.

[0065] Real-time acquisition mode: In real-time acquisition mode, the meter reading device is connected to an external PC and uses the HSO (HiStudio) software package for data transmission and storage. After the meter reading device collects the noise or signal on the power line, it transmits the data to the PC in real time according to the data format and transmission protocol defined by the HSO software package. The HSO software package runs on the PC and performs further processing, analysis and storage after receiving the data. For example, it performs statistical analysis on the data according to different time periods and generates visual data charts to provide intuitive data display for operation and maintenance personnel. It can be understood that the HSO software package is a Windows application that supports multiple scenarios such as R&D debugging, field testing, and factory testing. It mainly includes: network topology, module monitoring, module upgrade, debugging console, configuration window, simulation concentrator, and power consumption abnormality monitoring function module.

[0066] (IV) Accurate single-point identification operation

[0067] Transmitter setup and startup: Connect the A, B, C three-phase wires and the neutral wire of the area identification transmitter to the corresponding positions of the power line accurately and respectively, ensuring that the connection is firm and the electrical performance is good. After powering on the transmitter, set the area number through its operation panel. During the setup process, the verification module inside the transmitter will perform communication verification with the working transmitters in the adjacent area to ensure that the set area number is not repeated, avoiding signal interference and misidentification. After completing the setup, start the transmitter to send a specific area identification signal to the power line network.

[0068] Receiver configuration and reception: Connect the meter reading device as a receiver and place it next to a site to be observed, ensuring that the connection between the receiver and the power line is normal and the signal reception is stable. After powering on the receiver, the operator presses the "mode" button to set the receiver to the station area identification reception mode. At this time, the receiver's display (LCD) displays "R--", and the "R" character flashes periodically, indicating that the receiver is in a state of waiting to receive signals. After the receiver starts the receiving program, its internal signal demodulation module begins to demodulate and decode the signal on the power line and extract the station area identification information sent by the transmitter.

[0069] Identification result feedback: If the receiver and the transmitter belong to the same area, after a period of signal analysis and processing, the identification and judgment module inside the receiver will determine that the identification is successful. At this time, the receiver emits a "beep" sound that lasts for 1 second through the buzzer, and displays the characters "area number + phase + receiving gear" on the LCD, intuitively showing the operator the area ownership and phase information of the site to be observed, so that the operation and maintenance personnel can quickly and accurately understand the topological structure and site distribution of the power network.

[0070] (V) Application of flexible signal transmission mode

[0071] Mode 0: Temperature protection stops sending: When the reading control device is in the signal sending state and detects that the temperature of the single board has risen to a level close to or exceeds the preset safety threshold, it automatically switches to mode 0 (displaying "SG0"). In this mode, the signal sending module stops sending signals and starts the heat dissipation mechanism, such as increasing the fan speed or adjusting the heat dissipation efficiency of the heat sink, to reduce the temperature of the single board, prevent damage to the device due to overheating, and ensure the stable operation and service life of the device.

[0072] Mode: High-power signal transmission: When you need to perform signal attenuation test over long distances or in strong interference environments, select Mode 1 (displaying "SG1"). The signal transmission module of the control device will adjust the parameters of the power amplifier to increase the power of the transmitted signal to a higher level, ensuring that the characteristic signal can be stably transmitted to a longer distance in a harsh power line transmission environment, so that the control device at the other end can accurately collect noise data, thereby achieving effective testing and analysis of the long-distance attenuation characteristics of the power line.

[0073] Mode 2: Low-power signal transmission: For short-distance or low-signal strength test scenarios, use Mode 2 (displayed as "SG2"). At this time, the signal transmission module reduces the transmission power to reduce interference with the power line network, while also meeting the needs of short-distance signal attenuation testing, saving energy consumption and avoiding unnecessary impact on other power equipment.

[0074] Through the above steps, the power carrier networking control device can more efficiently and accurately complete the functions of monitoring, controlling and data collection and analysis of the power carrier network, providing strong technical support for the stable operation and operation and maintenance management of the power system.

[0075] For the working principle of this embodiment, please refer to the description of the aforementioned embodiment 1 of the present invention, which will not be repeated here.

[0076] Compared with the prior art, the beneficial effect brought by the embodiment of the present invention is that the meter reading and control device of the present invention can build a reliable data connection with the carrier communication module by means of low-voltage power lines, implement meter reading and control operations on the carrier communication module in a half-duplex communication mode, and is compatible with the DL / T 645 protocol. It can flexibly select the way to access the power line network according to the on-site environment, and different terminal devices can also select an adaptive network interface to connect to the meter reading and control device. In the low-voltage area carrier networking scenario, it can accurately present the networking level of the area, accurately locate the unstable nodes in the tree networking structure, and then find the corresponding table module and the high-frequency unstable collection equipment. With the help of PAD and analyzer WIFI connection on site, the operation and maintenance personnel can efficiently find faults in complex and in-depth application areas, effectively solve the problem of too high networking level, and achieve the goal of high-frequency stable meter reading, which greatly improves the stability, reliability and operation and maintenance efficiency of the power meter reading system, reduces the operation and maintenance cost and troubleshooting difficulty, and provides a strong guarantee for the smooth operation of the power system.

[0077] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A power carrier network copy control device, which uses a carrier communication method to interact with a carrier communication module in a power line network, characterized in that: include: A connecting component, used to connect the reading control device to the power line network through a power line connection method or a magnetic ring coupling connection method; Communication interface components, including wired network interface and wireless network interface, are used to connect the copy control device with external equipment; A carrier processing module, used to search for the carrier module, establish a connection with the carrier module, and collect data on the power line after the copy control device is connected to the power line network; The station area identification module is used to identify whether the station to be observed belongs to this station area and the phase it is in; The signal test module is used to send characteristic signals and collect noise data to test signal attenuation on the power line.

2. The power carrier networking control device according to claim 1 is characterized in that: The carrier processing module specifically includes: The carrier network search module is used to search for the existence of a carrier local end or terminal module after the copy control device is connected to the power line network; A carrier module connection module is used to select a corresponding carrier module for connection according to the search results after the carrier network search is completed; The data acquisition module is used to collect data on the power line through a storage acquisition method or a real-time acquisition method.

3. The power carrier networking control device according to claim 2 is characterized in that: The storage acquisition method is to collect noise or signals on the power line and store the data in a TF card. The real-time acquisition method is to collect noise or signals on the power line and store the data in a PC through predetermined software.

4. The power carrier networking control device according to claim 1 is characterized in that: The signal testing module analyzes the power line attenuation by sending a characteristic signal at one end of the power line and collecting noise data at the other end; the signal sending of the signal testing module includes a mode of stopping signal sending to cool down, a high-power signal sending mode and a low-power signal sending mode.

5. A control method for a power carrier networking copy control device, characterized in that: include: After the meter reading and control device is connected to the power line network, the carrier frequency band in the power line network is scanned to detect whether there is a carrier local end or terminal module; Based on the carrier network search results, select the carrier module for connection according to signal strength, stability and preset connection priority rules; Collect data on the power line by means of storage collection or real-time collection; Through the cooperation of the area identification transmitter and the copy control device as a receiver, it is possible to identify whether the site to be observed belongs to this area and the phase it is in; By sending characteristic signals at one end of the power line and collecting noise data at the other end to analyze the power line attenuation, effective control and analysis of the power carrier network can be achieved.

6. The control method according to claim 5, characterized in that: The storage acquisition method is to collect noise or signals on the power line and store the data in a TF card. The real-time acquisition method is to collect noise or signals on the power line and store the data in a PC through predetermined software.

7. The testing method according to claim 6, characterized in that: The storage and collection method adopts cyclic storage, and performs time stamp marking and classified storage on the collected data.

8. The control method according to claim 5, characterized in that: The signal transmission modes include a mode of stopping signal transmission to reduce temperature, a high-power signal transmission mode, and a low-power signal transmission mode.

9. The control method according to claim 8, characterized in that: When it is detected that the temperature of the single board has risen to a level close to or exceeding the preset safety threshold, it automatically switches to a mode of stopping signal sending to cool down the board, and starts the heat dissipation mechanism to reduce the temperature of the single board.

10. The control method according to claim 5, characterized in that: When selecting a carrier module for connection, it also includes handshaking communication with the selected carrier module to establish a stable data transmission link.

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