Line partial discharge on-line positioning system communication device and method

Abstract

The invention discloses a line partial discharge on-line positioning system communication device and method, and the device comprises a carrier communication device which is disposed at a pole-mounted switch of a line, the carrier communication device is connected with an intelligent fusion terminal in a wired manner, and a communication interface of the intelligent fusion terminal is connected with a property management platform. The carrier communication device comprises coupling equipment, a coupling capacitor, a hybrid transformer and carrier communication equipment, the coupling equipment comprises first coupling equipment and second coupling equipment, one end of the first coupling equipment and one end of the second coupling equipment are respectively connected with one end of the hybrid transformer, and the other end of the hybrid transformer is connected with the carrier communication equipment. The other end of the first coupling device is connected with one end of the first coupling capacitor, the other end of the second coupling device is connected with one end of the second coupling capacitor, the other end of the first coupling capacitor is connected with one phase line of the power line, and the other end of the second coupling capacitor is connected with the other phase line of the power line.

Description

Technical Field

[0001] The invention belongs to the technical field of positioning system communication, and in particular relates to a communication device and method for an online positioning system for partial discharge of a line. Background Art

[0002] Partial discharge is an early sign of insulation aging and damage in electrical equipment. Harmful substances such as high temperature, ozone and nitrogen oxides generated during partial discharge will corrode insulation materials, accelerate insulation aging, and increase the risk of equipment short circuits and fires. If an online positioning system is not used, these potential discharge phenomena may not be discovered in time, resulting in further insulation deterioration, which may eventually lead to electrical equipment failures or even major power safety accidents.

[0003] In the power system, the reliability of equipment is directly related to the stable operation of the power grid and the quality of power supply. The partial discharge online positioning system can monitor the insulation status of electrical equipment in real time, and promptly detect and warn of potential problems. With the rapid development of smart grids, online monitoring and intelligent operation and maintenance of power equipment have become an industry trend. Existing communication methods are not suitable for partial discharge online positioning systems, which have high safety risks, high operation and maintenance costs, and low system reliability, which restricts the development of the power industry towards intelligence and automation. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem that the existing communication method is not suitable for a partial discharge online positioning system, and proposes a communication device and method for a line partial discharge online positioning system.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: A communication device for a line partial discharge online positioning system, comprising a carrier communication device, the carrier communication device being installed at a pole switch of the line, the carrier communication device being wired to an intelligent fusion terminal, and the communication interface of the intelligent fusion terminal being connected to a property management platform; The carrier communication device includes a coupling device, a coupling capacitor, a hybrid transformer and a carrier communication device. The coupling device includes a first coupling device and a second coupling device. One end of the first coupling device and one end of the second coupling device are respectively connected to one end of the hybrid transformer, the other end of the hybrid transformer is connected to the carrier communication device, the other end of the first coupling device is connected to one end of the first coupling capacitor, the other end of the second coupling device is connected to one end of the second coupling capacitor, the other end of the first coupling capacitor is connected to one phase line of the power line, and the other end of the second coupling capacitor is connected to the other phase line of the power line.

[0006] Further, the one-phase line of the power line and the other-phase line of the power line are two-phase lines whose edges are adjacent to each other.

[0007] Furthermore, OFDM carrier communication is used between each carrier communication device.

[0008] Furthermore, the communication between the intelligent fusion terminal and the property management platform adopts a wired or wireless communication network.

[0009] A communication method for a line partial discharge online positioning system, using the communication device for a line partial discharge online positioning system, comprises the following steps: The carrier communication device receives the information signal sent by the power equipment, converts the information signal into a carrier signal, and then couples the carrier signal to any two-phase line of the power line; the carrier signal is transmitted to the intelligent fusion terminal along the Ethernet, and the intelligent fusion terminal collects the carrier signal and processes the processed data, and then sends the processed data to the property management platform, which receives the processed data and performs further processing and analysis.

[0010] Furthermore, the carrier communication device receives the information signal sent by the power equipment, converts the information signal into a carrier signal, and then couples the carrier signal to any two-phase lines of the power line. Specifically, the carrier communication device includes a carrier communication device and two coupling devices. When the receiving module of the carrier communication device receives the information signal sent by the power equipment, the information signal is modulated into a carrier signal through the modulation module of the carrier communication device, and the carrier signal is coupled to any two-phase lines of the power line through the coupling device.

[0011] Furthermore, when the receiving module of the carrier communication device receives the carrier signal on the power line, the coupling device couples the carrier signal on the power line and sends it to the carrier communication device through the hybrid transformer for processing and restoration.

[0012] Furthermore, the transmitting module of the carrier communication device sends a carrier signal to the remote device.

[0013] Furthermore, the carrier signal is firstly matched and isolated by the hybrid transformer and then coupled to any two-phase lines of the power line by the coupling device.

[0014] Further, any two-phase lines of the power line select edge two-phase lines of the power line.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a communication device for an online positioning system for partial discharge of a line. The carrier communication device is installed at the pole switch of the line, and there is no need to lay additional communication lines, which reduces the installation cost and complexity. Through the coordinated use of coupling capacitors and hybrid transformers, the interference signals on the power lines are effectively isolated, and the transmission quality and stability of the carrier signal are improved. The carrier communication device is wired to the intelligent fusion terminal, and the communication interface of the intelligent fusion terminal is connected to the property management platform. It can monitor the partial discharge situation on the line in real time, and accurately locate it through the remote monitoring center, providing strong support for the maintenance and management of the line.

[0016] The communication method of the line partial discharge online positioning system proposed by the present invention adopts the carrier communication mode and the phase coupling mode, which improves the reliability and anti-interference ability of data transmission. It supports multi-point installation and flexible expansion, and can increase or decrease the number of carrier communication devices according to actual needs. Through the intelligent fusion terminal and property management platform, remote monitoring and management of power lines are realized, which improves work efficiency and safety.

[0017] Furthermore, the carrier communication device realizes bidirectional transmission of carrier signals between the transmitting module and the receiving module and the power line. In this process, the hybrid transformer and the coupling device ensure the effective transmission of the signal and the safe operation of the equipment. At the same time, selecting the edge two-phase lines of the power line for coupling is also an optimization choice based on actual needs and communication protocols. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings: Figure 1 The present invention is a schematic diagram of the connection between a communication device of an online positioning system for partial discharge of a line and a power line.

[0019] Figure 2 The present invention is a flow chart of a communication method for an online positioning system for partial discharge of a line. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Embodiment 1 See also Figure 1 A communication device for an online positioning system for partial discharge of a line includes a carrier communication device, which is installed at a pole switch of the line. The carrier communication device is wired to an intelligent fusion terminal, and the communication interface of the intelligent fusion terminal is connected to a property management platform; the carrier communication device includes a coupling device, a coupling capacitor, a hybrid transformer and a carrier communication device, and the coupling device includes a first coupling device and a second coupling device. One end of the first coupling device and one end of the second coupling device are respectively connected to one end of the hybrid transformer, and the other end of the hybrid transformer is connected to the carrier communication device. The other end of the first coupling device is connected to one end of the first coupling capacitor, and the other end of the second coupling device is connected to one end of the second coupling capacitor. The other end of the first coupling capacitor is connected to one phase line of a power line, and the other end of the second coupling capacitor is connected to another phase line of the power line.

[0025] The present embodiment provides a communication device for an online positioning system for partial discharge of a line. Through the coordinated use of coupling capacitors and hybrid transformers, through its unique installation method and components, it adopts a carrier communication method and a phase-to-phase coupling method to achieve effective monitoring and positioning of partial discharge of power lines, and provides important guarantees for the safe operation of the power system. The pole switch is an important device in the power line, which is used to control the on-off and segmentation of the line. Installing the carrier communication device at the pole switch can make full use of the infrastructure of existing equipment and reduce installation costs and complexity. At the same time, the pole switch is also a key node for signal transmission in the power line. Installing the carrier communication device at these locations can ensure that the partial discharge information can cover the entire power line and achieve comprehensive monitoring and positioning.

[0026] One phase line of the power line and the other phase line of the power line are two phase lines adjacent to the edge of the power line. OFDM carrier communication is adopted between each carrier communication device. The communication between the intelligent fusion terminal and the property management platform adopts a wired or wireless communication network. The system adopts OFDM carrier communication to improve the efficiency and reliability of data transmission. At the same time, the system adopts a phase-to-phase coupling method to couple the carrier signal to the two edge phases of the power line to reduce the impact of faults on communication.

[0027] Embodiment 2 See also Figure 2 , a communication method for a line partial discharge online positioning system, comprising the following steps: The carrier communication device receives the information signal sent by the power equipment, converts the received information signal into a carrier signal, and then couples the carrier signal to any two-phase line of the power line; the carrier signal is transmitted to the intelligent fusion terminal along the Ethernet, and the intelligent fusion terminal collects the carrier signal and processes it to obtain processed data; the intelligent fusion terminal sends the processed data to the property management platform through the communication interface, and the property management platform receives the processed data and performs reprocessing and analysis.

[0028] The information signal of the power equipment contains data information such as the status, power consumption, fault information, etc. The power equipment includes electric meters, sensors, etc. The carrier signal is a high-frequency signal that can modulate the information signal, that is, load it onto the high-frequency carrier, and transmit it over long distances and efficiently on the power line. The power line is a ready-made and widely distributed communication medium. Using the power line for data transmission can save a lot of communication line construction costs. The carrier communication device has anti-interference ability to ensure stable signal transmission. After the intelligent fusion terminal demodulates the signal and restores the original information signal, the intelligent fusion terminal further processes the information signal by data analysis, verification, denoising, etc., and the obtained data is accurate and reliable. The reprocessing and analysis process includes data storage, statistics, analysis, alarm, etc. The property management platform monitors the operating status of the power equipment in real time based on these data, promptly discovers and handles potential problems, improves the operating efficiency and safety of the power system, and realizes remote transmission, monitoring and control of data.

[0029] The carrier communication device receives the information signal sent by the power equipment, converts the received information signal into a carrier signal, and then couples the carrier signal to any two-phase lines of the power line. Specifically, the carrier communication device includes a carrier communication device and two coupling devices. When the receiving module of the carrier communication device receives the information signal sent by the power equipment, the information signal is modulated into a carrier signal through the modulation module of the carrier communication device, and the carrier signal is coupled to any two-phase lines of the power line through the coupling device. When the receiving module of the carrier communication device receives the carrier signal on the power line, the coupling device couples the carrier signal on the power line and sends it to the carrier communication device through the hybrid transformer for processing and restoration.

[0030] The coupling device is a key component that connects the carrier communication device to the power line. It can effectively inject the carrier signal into the power line and ensure the stable transmission of the signal on the power line. The phase-to-phase coupling method improves the reliability and stability of communication, especially when the power line environment is complex and there is a lot of interference.

[0031] The transmitting module of the carrier communication device sends a carrier signal to the remote device. The carrier signal is first matched and isolated by the hybrid transformer and then coupled to any two-phase line of the power line through the coupling device. Any two-phase line of the power line selects the edge two-phase line of the power line. OFDM carrier communication is used between each carrier communication device. The communication between the intelligent fusion terminal and the property management platform adopts a wired or wireless communication network. The function of the hybrid transformer is to match the signal to ensure that the voltage, current and other parameters of the carrier signal match the electrical characteristics of the power line to reduce the attenuation and distortion of the signal during transmission. At the same time, the hybrid transformer also plays an isolation role to protect the carrier communication equipment from possible hazards such as overvoltage and overcurrent on the power line. The carrier signal processed by the hybrid transformer is coupled to any two-phase line of the power line through the coupling device. Selecting the edge two-phase line of the power line for coupling can reduce signal interference and improve transmission efficiency.

[0032] This embodiment can build an efficient, stable and reliable line partial discharge online positioning system by adopting OFDM carrier communication mode, installing carrier communication devices at pole switches and selecting appropriate communication modes to achieve communication between the intelligent fusion terminal and the property management platform.

[0033] Embodiment 3 See also Figure 1 and Figure 2 , a communication method for a line partial discharge online positioning system, comprising the following steps: The carrier communication device receives communication data, and the modulation module of the carrier communication device modulates the communication data into a carrier signal. The carrier communication device couples the carrier signal to any two-phase line of the 10kV power line, and connects the intelligent fusion terminal with a voltage level of 380V through Ethernet wired connection. The intelligent fusion terminal communicates with the property management platform.

[0034] A carrier signal is a basic signal used to transmit information. It is usually a high-frequency electrical signal that can be transmitted through wireless or wired media. Its main characteristics are stable frequency, regular waveform, and the ability to carry modulated signals for transmission.

[0035] The carrier communication device needs to be installed at multiple points along the line at the pole switch, so each device needs to communicate with each other. At the same time, the system should also have the ability to communicate with external devices to meet the needs of parameter setting, command issuance, remote result uploading, etc. The communication between devices adopts OFDM (Orthogonal Frequency Division Multiplexing) carrier communication. OFDM is an efficient modulation technology that can distribute data to multiple subcarriers for transmission, thereby improving the data transmission rate and anti-interference ability. Each carrier communication device has OFDM transceiver function and can communicate with other devices at high speed and reliably.

[0036] Each device has the function of sending and receiving, and the coupling method adopts phase-to-phase coupling. In a set of carrier communication devices, there are two coupling devices. The two coupling devices and the carrier communication device are interconnected through a hybrid transformer. The carrier signal generated by the modulation module is coupled to a two-phase line of the power line through the hybrid transformer and the coupling device. Generally, the two phases at the edge are selected because the probability of simultaneous failure of the two-phase power line at the edge is significantly lower than the probability of failure of the middle phase power line. Compared with the phase-to-ground coupling method, although the phase-to-phase coupling has more equipment, complex connections, and high installation and maintenance costs, it has the advantage of high reliability. The communication between the device and the property management platform relies on the intelligent fusion terminal at the line terminal.

[0037] In this embodiment, carrier communication devices are installed at multiple pole switches of the power line to realize remote transmission, monitoring and control of data. Each device has a transceiver function and can communicate with other devices and external equipment. In the power system, a carrier communication device is a device that uses power lines as a transmission medium for communication. This communication method is particularly suitable for areas where power lines have been laid, because it does not require additional communication lines to be laid, thereby saving cost and time.

[0038] The modulation module is a key part of the carrier communication system, which converts the information to be transmitted, such as audio, data, etc., into a carrier signal suitable for transmission on the power line. The low-frequency information signal baseband signal is modulated onto a high-frequency carrier for long-distance transmission on the power line. In the modulation module, the baseband signal is combined with the high-frequency carrier signal through modulation techniques such as frequency modulation, phase modulation or amplitude modulation to generate a modulated carrier signal. The modulated carrier signal contains the information to be transmitted and has frequency and waveform characteristics suitable for transmission on the power line.

[0039] The generated carrier signal needs to be coupled to the power line through a coupling device. In power carrier communication, there are many coupling methods, such as inductive coupling, capacitive coupling, etc. This embodiment adopts a capacitive coupling method for any two-phase line coupled to the power line. Capacitive coupling has a high coupling efficiency and good anti-interference ability. The coupling capacitor is a high-voltage capacitor connected to the power line, withstands the high voltage of the power line, and prevents the industrial frequency high voltage from entering subsequent circuits such as combined filters and power line carriers, while allowing the carrier signal to pass. The capacitance and withstand voltage level of the coupling capacitor are selected according to the voltage level and transmission requirements of the power line. The combined filter is used to compensate for the capacitive reactance component of the coupling capacitor and improve the transmission efficiency of the carrier signal. The industrial frequency current leaked through the coupling capacitor is discharged into the ground through a low-impedance coil to protect equipment and personal safety. The combined filter adopts a bandpass or high-pass filter circuit with good input and output linear characteristics.

[0040] During the coupling process, the carrier signal is coupled between the two phases of the power line through the capacitance of the coupling capacitor. Due to the existence of the coupling capacitor, the carrier signal can be transmitted along the power line, and the high voltage of the power line will not cause harm to the carrier signal transmission equipment. The modulated carrier signal is coupled to the power line and transmitted along the power line. During the transmission process, the influence of factors such as the impedance, attenuation and external interference of the power line itself is overcome by processing the modulated carrier signal at the receiving end. After receiving the carrier signal transmitted from the power line at the receiving end, another carrier communication device demodulates the received signal to restore the original baseband signal. The demodulation process is the opposite of the modulation process, and is the process of extracting the baseband signal from the carrier signal.

[0041] Compared with the phase-to-ground coupling method, the phase-to-phase coupling method has more equipment, complex connections, and high installation and maintenance costs, but it has higher reliability. This is because the probability of simultaneous failure of the two-phase power lines at the edge is significantly lower than that of the middle-phase power lines. Each carrier communication device contains two coupling devices, which are connected to the carrier communication device through a hybrid transformer. The hybrid transformer is used to achieve signal matching and isolation to ensure that the carrier signal can be stably and reliably coupled to the power line.

[0042] The carrier communication device is a telephone multi-channel communication system based on frequency division multiplexing technology. Its core components include carrier telephone terminals and repeaters. The carrier telephone terminal is the main equipment for carrier communication, usually composed of audio terminals, frequency conversion, carrier frequency supply and power supply. Some terminals also include telemetry, telesignaling, telesupply and business communication devices. Repeaters are mainly used to compensate for line transmission attenuation and characteristic changes to extend the communication distance.

[0043] Intelligent fusion terminals, such as the TTU area intelligent fusion terminal, are installed on the secondary side of the transformer in the distribution station room, box transformer or pole transformer, and are edge devices of the "cloud-pipe-edge-end" architecture of the smart IoT system. The intelligent fusion terminal not only has data collection functions and can monitor the operating conditions of distribution transformers in real time, but also has communication networking capabilities and can exchange data with carrier communication devices and other intelligent devices.

[0044] The specific process of the carrier communication device communicating with the property management platform through the intelligent fusion terminal of the line terminal is as follows: At the transmitting end, the carrier communication device converts the audio telephone signals of each user or other data signals to be transmitted, and moves them to different positions of the line transmission spectrum. After amplification, filtering and other processing, the signal is transmitted to the receiving end through power lines or other transmission media and amplification equipment. The carrier communication device is wired to the intelligent fusion terminal, and the carrier signal is transmitted to the intelligent fusion terminal through Ethernet and other means. The intelligent fusion terminal receives the signal from the carrier communication device through its built-in carrier communication module. The received signal is demodulated, filtered and other processing is performed to restore it to the original data signal. The intelligent fusion terminal uploads the processed data to the property management platform through remote communication methods such as Ethernet and 4G public network. At the same time, the intelligent fusion terminal can also receive control commands and data requests issued by the property management platform to realize two-way communication with the property management platform. The property management platform receives data from the intelligent fusion terminal for storage, analysis and display. According to the data analysis results, the property management platform can monitor and manage the power distribution system in real time to ensure the stable operation of the system.

[0045] The carrier communication device communicates with the property management platform through the intelligent fusion terminal of the line terminal, using the existing power line as the transmission medium, without the need to lay additional communication lines or rewiring. Power lines have a wide coverage and can achieve long-distance communication. It adopts advanced modulation and demodulation technology to support high-speed data transmission. Power line carrier communication has high security and stability. It makes full use of the advantages of carrier communication technology and intelligent fusion terminals to achieve real-time monitoring and management of the distribution system.

[0046] The carrier communication device uses the power line as the transmission medium and realizes the long-distance transmission of data through the carrier signal. The installation location is selected near the pole switch to facilitate the coupling and transmission of signals. At the same time, the impact of the installation environment on the equipment, such as temperature, humidity, electromagnetic interference and other factors, must also be considered.

[0047] The installation process of the carrier communication device at the pole switch along the line is as follows: Prepare the carrier communication device, coupling capacitor, combined filter and other related equipment, and check and confirm that they are correct. Install the coupling capacitor between the two phases of the power line to ensure that it has good contact with the power line and can withstand the high voltage of the power line. Connect the combined filter to the coupling capacitor to compensate for the capacitive reactance component of the coupling capacitor and improve the transmission efficiency of the carrier signal. Install the carrier communication device in an appropriate position and connect it to the coupling capacitor and combined filter through cables. Ensure that the equipment wiring is correct, firm and reliable. After the installation is completed, debug and test the carrier communication device to ensure that it can work normally and transmit data accurately.

[0048] The carrier communication device can monitor the status information of the pole switch in real time, such as switch position, current and voltage and other parameters. Through the carrier communication device, remote control operations of the pole switch can be realized, such as opening and closing. The carrier communication device can also detect the fault information of the power line in real time, such as short circuit, grounding and other faults, and transmit the fault information to the monitoring center for processing. Installing a carrier communication device at the pole switch can monitor the status of the switch in real time, transmit the switch operation instructions and fault information, and provide strong guarantee for the safe and stable operation of the power system.

[0049] Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

[0050] The above content is a further detailed description of the present invention. It cannot be determined that the specific implementation methods of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make several simple deductions or substitutions, which should be regarded as belonging to the protection scope of the present invention determined by the submitted claims.

Claims

1. A communication device for an online positioning system for partial discharge of a line, characterized in that: It includes a carrier communication device, which is installed at the pole switch of the line, and the carrier communication device is wired to the intelligent fusion terminal, and the communication interface of the intelligent fusion terminal is connected to the property management platform; The carrier communication device includes a coupling device, a coupling capacitor, a hybrid transformer and a carrier communication device. The coupling device includes a first coupling device and a second coupling device. One end of the first coupling device and one end of the second coupling device are respectively connected to one end of the hybrid transformer, the other end of the hybrid transformer is connected to the carrier communication device, the other end of the first coupling device is connected to one end of the first coupling capacitor, the other end of the second coupling device is connected to one end of the second coupling capacitor, the other end of the first coupling capacitor is connected to one phase line of the power line, and the other end of the second coupling capacitor is connected to the other phase line of the power line.

2. A communication device for online positioning system of partial discharge of a line according to claim 1, characterized in that: The one-phase line of the power line and the other-phase line of the power line are two-phase lines adjacent to the edges of the power line.

3. A communication device for online positioning system of partial discharge of a line according to claim 1, characterized in that: OFDM carrier communication is used between each carrier communication device.

4. A communication device for online positioning system of partial discharge of a line according to claim 1, characterized in that: The communication between the intelligent fusion terminal and the property management platform adopts wired or wireless communication network.

5. A communication method for a line partial discharge online positioning system, using a communication device for a line partial discharge online positioning system as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: The carrier communication device receives the information signal sent by the power equipment, converts the information signal into a carrier signal, and then couples the carrier signal to any two-phase line of the power line; the carrier signal is transmitted to the intelligent fusion terminal along the Ethernet, and the intelligent fusion terminal collects the carrier signal and processes the processed data, and then sends the processed data to the property management platform, which receives the processed data and performs further processing and analysis.

6. A communication method for a line partial discharge online positioning system according to claim 5, characterized in that: The carrier communication device receives the information signal sent by the power equipment, converts the information signal into a carrier signal, and then couples the carrier signal to any two-phase lines of the power line. Specifically, the carrier communication device includes a carrier communication device and two coupling devices. When the receiving module of the carrier communication device receives the information signal sent by the power equipment, the information signal is modulated into a carrier signal through the modulation module of the carrier communication device, and the carrier signal is coupled to any two-phase lines of the power line through the coupling device.

7. A communication method for a line partial discharge online positioning system according to claim 6, characterized in that: When the receiving module of the carrier communication device receives the carrier signal on the power line, the coupling device couples the carrier signal on the power line and sends it to the carrier communication device through the hybrid transformer for processing and restoration.

8. A communication method for a line partial discharge online positioning system according to claim 6, characterized in that: The transmitting module of the carrier communication device sends a carrier signal to the remote device.

9. A communication method for a line partial discharge online positioning system according to claim 6, characterized in that: The carrier signal first passes through a hybrid transformer for signal matching and isolation, and then is coupled to any two-phase lines of the power line through a coupling device.

10. The communication method of the line partial discharge online positioning system according to claim 5, characterized in that: Any two-phase line of the power line selects the edge two-phase line of the power line.

Images