A pt device, equipment and system of fusion carrier communication

Abstract

This application discloses a PT device, equipment, and system with integrated carrier communication, applicable to the smart grid field. The PT device with integrated carrier communication includes: terminals, PT core, and further includes: a medium-voltage carrier coupler, a carrier board, and an aviation connector, wherein the PT core, the medium-voltage carrier coupler, and the carrier board are integrated into a single design. This application integrates carrier-related communication functions with the power supply and measurement functions of traditional PTs. When carrier-related functions need to be added after the PT is installed and put into operation, only the FTU connected to the secondary side of the PT device with integrated carrier communication needs to be modified or replaced. Compared with the large-scale power outages and the cost of installing a complete carrier communication device on the primary side of the PT device in the prior art, this application greatly reduces the impact of power outages on secondary equipment construction when adding carrier functions after the PT is installed and put into operation by improving the primary side PT device in advance.

Description

Technical Field

[0001] This invention relates to the field of smart grids, and in particular to a PT device, equipment and system that integrates carrier communication. Background Technology

[0002] Voltage transformers (PTs) are indispensable devices in power systems, bearing the important responsibility of accurately converting high voltage to low voltage for various purposes such as measurement, metering, protection, and control. With the increasing number and wide distribution of monitoring points in the power grid, traditional wired communication methods restrict the power system's ability to respond quickly and dispatch flexibly for voltage data collected by a large number of PT devices scattered in different geographical locations, making it difficult to meet the current stringent requirements for real-time dynamic monitoring of the power grid.

[0003] Meanwhile, carrier communication technology has made significant progress in recent years, demonstrating unique advantages. It cleverly utilizes existing power lines as signal transmission media, achieving high-speed and stable data transmission without the need for large-scale installation of dedicated communication lines. Therefore, after the installation and operation of PT (Power Transmission Platform) equipment, many devices require the addition of carrier-related communication modules. Traditionally, the PT is installed together with the pole-mounted circuit breaker and feeder terminal unit (FTU) as part of the PT equipment tender. The medium-voltage carrier coupler and carrier module are also installed together as part of the carrier communication device tender. Both sets of equipment belong to the same on-site installation scenario and work together to achieve fault isolation, self-healing circuit breakers, and fault location functions. However, after the traditional installation and operation of ordinary PT equipment, if carrier-related functions are required, a complete set of medium-voltage carrier coupler and carrier module devices needs to be added. During the installation of the entire carrier-related device, the capacitive coupler from the carrier module needs to be added to the primary side of the PT equipment. This installation requires a power outage on the primary side of the PT equipment, which will significantly impact the power supply to the equipment.

[0004] Therefore, how to solve the power outage on the primary side when adding carrier-related communication modules after PT construction and operation is a technical problem that urgently needs to be solved by those in this field. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a PT device, equipment, and system that integrates carrier communication, solving the problem of power outage on the primary side when adding carrier-related communication modules after PT construction and operation. The specific solution is as follows:

[0006] In a first aspect, this application provides a PT device for integrated carrier communication, including: a terminal block, a PT core, and further including: a medium-voltage carrier coupler, a carrier board, and an aviation plug, wherein the PT core, the medium-voltage carrier coupler, and the carrier board are integrated into a single design;

[0007] The input terminal of the medium-voltage carrier coupler is connected to the terminal block;

[0008] The input terminal of the PT core is connected to the terminal block;

[0009] The output terminal of the medium-voltage carrier coupler is connected to the input terminal of the carrier board;

[0010] The output terminal of the carrier board is connected to the aviation plug;

[0011] The output end of the PT magnetic core is connected to the aviation plug.

[0012] Optional features also include: fuses;

[0013] The first end of the fuse is connected to the terminal block;

[0014] The second end of the fuse is connected to the medium-voltage carrier coupler and the PT core.

[0015] Optionally, the fuse includes a carrier fuse and a PT fuse;

[0016] The carrier fuse is disposed between the terminal and the medium-voltage carrier coupler;

[0017] The PT fuse is disposed between the terminal and the PT core.

[0018] Optionally, the aviation plug is a multi-functional composite aviation plug;

[0019] The first input terminal of the multifunctional composite aviation plug is connected to the output terminal of the carrier board;

[0020] The second input terminal of the multifunctional composite aero plug is connected to the output terminal of the PT magnetic core.

[0021] Optionally, the aviation plug is a carrier aviation plug and a power aviation plug;

[0022] The input terminal of the carrier insertion plug is connected to the output terminal of the carrier board;

[0023] The input terminal of the power connector is connected to the output terminal of the PT core.

[0024] Optionally, the medium-voltage carrier coupler includes: a high-voltage capacitor and a coupling plate;

[0025] The first terminal of the high-voltage capacitor is connected to the terminal block as the input terminal of the medium-voltage carrier coupler.

[0026] The second terminal of the high-voltage capacitor is connected to the input terminal of the coupling plate;

[0027] The output end of the coupling plate is connected to the input end of the carrier plate as the output end of the medium-voltage carrier coupler.

[0028] Optional features also include: surge arresters;

[0029] The first end of the surge arrester is connected to the terminal block;

[0030] The second terminal of the surge arrester is grounded.

[0031] Secondly, this application provides a fused pole-mounted switchgear, including the aforementioned fused carrier communication PT device and an FTU connected to the secondary side of the fused carrier communication PT device, wherein the FTU is used to detect and process circuit faults in the distribution network.

[0032] Optionally, it also includes: a pole-mounted circuit breaker, which is connected to the primary side of the PT device of the fused carrier communication, and is used to automatically disconnect the circuit when the power system experiences overload, short circuit or other faults.

[0033] Thirdly, this application provides a power distribution system, characterized in that it includes the aforementioned integrated pole-mounted switchgear.

[0034] Therefore, in this application, the input terminal of the medium-voltage carrier coupler is connected to the terminal block; the input terminal of the PT core is connected to the terminal block; the output terminal of the medium-voltage carrier coupler is connected to the input terminal of the carrier board; and the output terminals of the carrier board and the PT core are connected to the aviation connector. By integrating carrier-related communication functions with the traditional power supply and measurement functions of the PT, when carrier-related functions need to be added after the PT is installed and operational, only the FTU connected to the secondary side of the PT device with integrated carrier communication needs to be modified or replaced. Compared to the large-scale power outages and the cost of installing a complete carrier communication device on the primary side of the PT device in the prior art, this application significantly reduces the impact of power outages during secondary construction when adding carrier functions after the PT is installed and operational, and saves overall equipment costs by improving the primary side PT device beforehand. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 A PT device diagram for fused carrier communication provided in an embodiment of this application;

[0037] Figure 2 A PT device diagram for fused carrier communication provided in an embodiment of this application;

[0038] Figure 3 A PT device diagram for fused carrier communication provided in an embodiment of this application;

[0039] Figure 4 A PT device diagram for fused carrier communication provided in an embodiment of this application;

[0040] Figure 5 A PT device diagram for fused carrier communication provided in an embodiment of this application;

[0041] Figure 6 A distributed FA (Functional Automation) functional application diagram provided in an embodiment of this application;

[0042] The attached diagram is labeled as follows: 10 is a medium-voltage carrier coupler. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The core of this application is to provide a PT device for fused carrier communication.

[0045] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] After a traditional standard PT (Potential Transmission Unit) is installed and put into operation, if carrier-related functions are required, a complete set of equipment consisting of a medium-voltage carrier coupling device and a carrier module needs to be added. During the installation of this carrier-related equipment, carrier-related devices need to be installed on the primary side of the PT. This installation requires a power outage on the primary side of the PT, which will significantly impact the power supply to the equipment.

[0047] Therefore, how to solve the power outage on the primary side when adding carrier-related communication modules after PT construction and operation is a technical problem that urgently needs to be solved by those in this field.

[0048] See Figure 1 As shown, in order to solve the above problems, this embodiment of the invention discloses a PT device for integrated carrier communication, including: terminals and PT core, characterized in that it further includes: medium-voltage carrier coupler 10, carrier board and aviation plug, wherein the PT core, medium-voltage carrier coupler 10 and carrier board are integrated into a single design;

[0049] The input terminal of the medium-voltage carrier coupler 10 is connected to the terminal block;

[0050] The input terminal of the PT core is connected to the terminal block;

[0051] The output terminal of the medium-voltage carrier coupler 10 is connected to the input terminal of the carrier board;

[0052] The output of the carrier board is connected to the aviation plug;

[0053] The output end of the PT magnetic core is connected to the aviation plug.

[0054] like Figure 1As shown, the terminal block is positioned between the external medium-voltage power line and the PT device integrating carrier communication, responsible for introducing the primary input signal transmitted from the medium-voltage power line. The PT core utilizes the principle of electromagnetic induction to transform the medium-voltage power signal received from the terminal block, extracting a voltage monitoring signal suitable for subsequent secondary processing and monitoring analysis from the high-voltage signal. This voltage signal possesses characteristics such as high precision and low distortion, effectively meeting the stringent signal quality requirements of power system monitoring. Simultaneously, the medium-voltage carrier coupler 10, also electrically connected to the terminal block, couples a carrier signal from the power line and transmits it to the carrier board input. The carrier board, as a key component in carrier signal processing, performs low-pass filtering, high-frequency amplification, modulation, and demodulation on the received carrier signal, converting the original carrier signal into a standard communication signal conforming to power communication standards and usable by external intelligent power devices. After the processing is complete, the output of the carrier board is connected to the air-mounted connector via a highly reliable and interference-resistant connection method. This serves as the port for outputting communication signals, enabling data interaction and information sharing with other power communication equipment and ensuring the interconnectivity of the entire power communication network. Similarly, after successfully converting the input power signal, the output of the PT core is also connected to the air-mounted connector via a compatible electrical connection. The extracted high-precision voltage monitoring signal is then transmitted through the air-mounted connector for subsequent analysis, fault diagnosis, and operational status assessment by the power monitoring system.

[0055] Therefore, the PT core, medium-voltage carrier coupler 10, and carrier board in this embodiment adopt an innovative integrated structural design, achieving a high degree of integration in physical layout. This not only optimizes the internal space utilization of the device and reduces the additional space required by the dispersed layout of components, but also greatly reduces signal attenuation and electromagnetic interference during transmission by shortening the signal transmission path, thereby significantly improving the overall electrical performance and operational reliability of the device. For example, in the integrated structure, an ultra-short-distance signal transmission link is formed between the medium-voltage carrier coupler 10 and the carrier board, effectively avoiding problems such as signal amplitude attenuation, phase distortion, and the introduction of external electromagnetic interference caused by long-distance line transmission. This effectively ensures the high-fidelity characteristics of the carrier signal during transmission, laying a solid foundation for the high-quality development of subsequent carrier communication. The entire process involves the medium-voltage power signal connected to the terminal block undergoing voltage transformation by the PT core and carrier signal extraction by the medium-voltage carrier coupler 10 within the PT device. Then, relying on the deep signal processing of the carrier board, the voltage monitoring signal and standard communication signal are synchronously transmitted outward via a connector. Due to the integrated design of the PT core, medium-voltage carrier coupler 10, and carrier board on the primary side, when carrier-related functions need to be added after the PT is installed and operational, only the FTU connected to the secondary side of the PT device with integrated carrier communication needs to be modified or replaced. Compared to the extensive power outages and the cost of installing a complete carrier communication device on the primary side of the PT device in existing technologies, this application significantly reduces the impact of power outages during secondary installation when adding carrier functions after the PT is installed and operational, and saves overall equipment costs by improving the primary side PT device beforehand.

[0056] like Figure 2 As shown, according to the above embodiments, this embodiment provides a specific solution, which further includes: a fuse;

[0057] The first end of the fuse is connected to the terminal block;

[0058] The second end of the fuse is connected to the medium-voltage carrier coupler 10 and the PT core.

[0059] In specific implementations, the use of fuses can significantly improve the safety performance of the device. When an overload current occurs in the line, such as a sudden surge in current caused by a power system failure, the fuse will quickly melt to block the current from continuing to flow to the PT core and the medium-voltage carrier coupler 10, preventing irreversible damage to the PT core and the medium-voltage carrier coupler 10 due to excessive current. Therefore, the use of fuses is extremely necessary for the practical application of PT devices with integrated carrier communication.

[0060] When only a shared fuse is provided between the terminal block and the medium-voltage carrier coupler 10 and the PT core, and the carrier component fails causing the fuse to blow, the original PT power extraction and metering functions will also fail. Similarly, when the PT component fails causing the fuse to blow, the carrier function will also fail. Therefore, based on the above embodiments, this embodiment provides a specific solution, such as... Figure 3 As shown, the fuses include carrier fuses and PT fuses;

[0061] The carrier fuse is located between the terminal block and the medium-voltage carrier coupler 10;

[0062] The PT fuse is located between the terminal block and the PT core.

[0063] In this embodiment, the two relatively independent fuses, located separately between the terminal block and the medium-voltage carrier coupler 10 and between the terminal block and the PT core, provide higher reliability and more flexible control for the PT device in fused carrier communication compared to a shared fuse. It is understood that there is a difference between the upper current limit of the PT core and the upper current limit of the medium-voltage carrier coupler 10; therefore, setting separate PT fuses and carrier fuses allows for more precise circuit safety protection for both the PT core and the medium-voltage carrier coupler 10.

[0064] In a specific implementation, the PT core relies on the principle of electromagnetic induction to transform and extract voltage monitoring signals from the input medium-voltage power signal. During this process, if the power system encounters abnormal conditions such as short-circuit faults or sudden load changes, causing the current flowing through the line to exceed the rated upper limit that the PT core can withstand, the PT fuse will, according to its preset thermal fusing characteristics, rapidly cut off the current link in a very short time, isolating the abnormally large current from damaging the PT core and effectively ensuring the integrity of the precision electromagnetic structure inside the PT core.

[0065] Meanwhile, the carrier fuse located between the terminal block and the medium-voltage carrier coupler 10 ensures smooth carrier coupling and subsequent signal processing. The medium-voltage carrier coupler 10 integrates numerous electronic components sensitive to the electromagnetic environment. When external power lines experience surges due to lightning strikes, grid surges, or other unforeseen circumstances, the carrier fuse can activate its fuse mechanism with a millisecond-level response speed, instantly blocking current flow to the medium-voltage carrier coupler 10. This effectively prevents physical damage to the internal electronic components caused by strong current, ensuring that the carrier signal remains uninterrupted throughout the entire process from coupling extraction to transmission to the carrier board.

[0066] Therefore, under normal operating conditions, both the carrier fuse and the PT fuse are in a low-resistance conducting state, ensuring smooth power and signal transmission, facilitating efficient collaborative operation of the core components of the PT device, enabling the PT core to stably output high-precision voltage signals, the medium-voltage carrier coupler 10 to accurately capture and transmit carrier signals, and the carrier board to orderly complete the modulation and demodulation of carrier signals and external interaction. However, if the substation area encounters extreme weather, such as a lightning strike caused by heavy rain leading to strong flicker in the power grid, instantly introducing a large-amplitude overcurrent at the terminal, the carrier fuse between the terminal and the medium-voltage carrier coupler 10 will be the first to quickly blow according to the current change, cutting off the abnormal current path on the carrier coupler side and preventing strong electromagnetic shocks from damaging the carrier signal processing flow. If the overcurrent continues or other fault factors cause an overload of the line current between the terminal and the PT core, the corresponding PT fuse will also immediately respond and blow. This dual protection mechanism ensures that the main body of the PT device with integrated carrier communication is protected from irreversible damage. Once the external faults have been identified and repaired, maintenance personnel only need to replace the fuses of the corresponding specifications according to the device design specifications, and the PT device can be quickly restored to its initial operating state, greatly reducing the fault repair cycle.

[0067] like Figure 3 As shown, according to the above embodiments, this embodiment provides a specific solution, wherein the aviation connector is a multi-functional composite aviation connector;

[0068] The first input terminal of the multi-functional composite aviation plug is connected to the output terminal of the carrier board;

[0069] The second input terminal of the multi-functional composite aviation plug is connected to the output terminal of the PT magnetic core.

[0070] In this embodiment, the carrier board, as the core unit for carrier signal processing, converts the original carrier signal into a standard communication signal conforming to power communication standards. The output of the carrier board is then connected to a multi-functional composite connector. Through this connection, the processed standardized communication signal can be transmitted quickly and stably to achieve efficient data interaction with external power communication equipment, ensuring uninterrupted carrier communication.

[0071] Meanwhile, based on the principle of electromagnetic induction, the PT core extracts the voltage monitoring signal from the medium-voltage power signal introduced from the terminal block. The output of the PT core is also securely connected to the multi-functional composite air connector. In this way, the voltage monitoring signal and the standard communication signal are organically integrated at the convergence node of the multi-functional composite air connector. Through the unified scheduling and management of the multi-functional composite air connector, the two types of key signals can be output to external devices in an orderly manner according to the preset transmission protocol. Whether it is transmitted to the communication management unit in the substation for real-time monitoring of the power grid operation status, or connected to power monitoring equipment to assist maintenance personnel in fault diagnosis and data analysis, it demonstrates extremely high convenience and reliability.

[0072] In some practical applications, multi-functional composite airplane sockets also have certain limitations. When the multi-functional composite airplane socket is damaged, the carrier function and the power harvesting and metering functions of the PT will fail simultaneously. Therefore, based on the above embodiments, this embodiment provides a specific solution, such as... Figure 4 As shown, the aviation connectors are carrier aviation connectors and power aviation connectors;

[0073] The input terminal of the carrier connector is connected to the output terminal of the carrier board;

[0074] The input terminal of the power connector is connected to the output terminal of the PT core.

[0075] In this embodiment, the carrier connector focuses on the construction and maintenance of the carrier communication link. The carrier board, as the core of carrier signal processing, converts the carrier signal input from the medium-voltage carrier coupler 10 into a standard communication signal that conforms to the stringent standards of power communication. The output of the carrier board is then connected to the input of the carrier connector. Carrier communication data can be rapidly transmitted outward along an independent and optimized channel, effectively avoiding interference with other signals and ensuring the accuracy and reliability of carrier signal transmission. This lays a solid communication foundation for the intelligent, refined management and real-time dynamic monitoring of the power system.

[0076] Meanwhile, the power connector is dedicated to the exclusive transmission of power monitoring signals. Voltage monitoring signals can be transmitted through the dedicated path of the power connector, avoiding signal attenuation caused by mixed signal transmission and mitigating the risk of signal distortion. This independent transmission mode not only ensures the accuracy of power monitoring signals but also provides a reliable basis for subsequent analysis and decision-making based on this data. For example, it helps maintenance personnel accurately assess the operational health of the power system and promptly detect potential faults. Furthermore, it ensures that the failure of one connector does not affect the operation of the other connector's related functions. In practical applications, since both power connectors and carrier connectors are standard interfaces, the independent connector design avoids the need for customers to purchase specific wiring harnesses after damage to either the power connector or carrier connector cable in the field.

[0077] Based on the above embodiments, this embodiment provides a specific solution, wherein the medium-voltage carrier coupler 10 includes: a high-voltage capacitor and a coupling plate;

[0078] The first end of the high-voltage capacitor is connected to the terminal block as the input terminal of the medium-voltage carrier coupler 10.

[0079] The second terminal of the high-voltage capacitor is connected to the input terminal of the coupling plate;

[0080] The output end of the coupling plate is connected to the input end of the carrier plate as the output end of the medium-voltage carrier coupler 10.

[0081] In this embodiment, the high-frequency carrier signal from the external medium-voltage power line is mixed with the power frequency current and transmitted to the medium-voltage carrier coupler 10. The high-voltage capacitor, utilizing its capacitive reactance difference to different frequency signals, can accurately filter out the high-frequency carrier signal, effectively blocking low-frequency interference components such as the power frequency current, laying a pure foundation for subsequent signal processing. The coupling plate, after the high-voltage capacitor initially filters out the high-frequency carrier signal, performs secondary adjustment to obtain the carrier signal. On one hand, the coupling plate, through its built-in micro-inductor element, resonates with the high-voltage capacitor to enhance the strength of the high-frequency carrier signal, giving it stronger anti-interference capabilities to cope with signal attenuation during long-distance transmission. On the other hand, based on the principle of electromagnetic coupling, the coupling plate transmits the enhanced high-frequency carrier signal to the carrier plate in a highly efficient and low-loss manner, ensuring the accuracy and stability of the signal transmission path and reducing signal reflection and scattering losses.

[0082] Therefore, after the medium-voltage power line is connected to the PT device for integrated carrier communication via the terminal block, the high-voltage capacitor in the medium-voltage carrier coupler 10 filters interference, and the coupling plate enhances transmission, enabling the carrier signal to successfully reach the carrier plate. The high-voltage capacitor and the coupling plate work together to ensure the stability and efficiency of power supply and communication monitoring.

[0083] like Figure 5 As shown, according to the above embodiments, this embodiment provides a specific solution, which further includes: a surge arrester;

[0084] The first terminal of the surge arrester is connected to the terminal block;

[0085] The second terminal of the surge arrester is grounded.

[0086] In this embodiment, the terminal block serves as the interface for the medium-voltage power line to connect to the PT device, undertaking the functions of power and signal input. The first end of the surge arrester is connected to the terminal block. Under normal operating voltage, the surge arrester is in a high-resistance state and does not affect the normal operation of the power system. When the system encounters lightning strikes, grid overvoltage, or other situations, the instantaneously generated ultra-high voltage surge is transmitted along the terminal block. Once the voltage amplitude exceeds its operating threshold, the surge arrester's resistance drops sharply, quickly introducing the overvoltage to the ground and preventing subsequent core components such as the PT core, medium-voltage carrier coupler 10, carrier board, and aviation connector from being subjected to excessively high voltage impacts.

[0087] Therefore, in this embodiment, one end of the surge arrester is connected to the terminal block and the other end is reliably grounded, forming a complete discharge circuit. When there is stray current or induced voltage generated by discharge on the ground, these interference factors can be conducted to the ground, ensuring the electrical safety of the device and guaranteeing the long-term stable operation of the PT device in complex power environments.

[0088] This application also provides a fused pole-mounted switchgear, including the aforementioned fused carrier communication PT device and an FTU connected to the secondary side of the fused carrier communication PT device. The FTU is used to detect and process circuit faults in the distribution network.

[0089] In this embodiment, the FTU connected to the secondary side of the PT device with integrated carrier communication is the core unit for distribution network fault detection and handling. During daily operation, the FTU continuously monitors the circuit status of the distribution network it is in, using its built-in sensors and intelligent analysis algorithms to collect key electrical parameters such as current and voltage in real time and compare them with preset thresholds. Upon detecting a fault, such as a short circuit or open circuit, the FTU quickly initiates the processing procedure. On one hand, it immediately transmits the fault information accurately and quickly to the remote distribution network monitoring center via the carrier communication link and the carrier plug of the PT device with integrated carrier communication, providing maintenance personnel with real-time and accurate fault details. On the other hand, based on preset strategies, the FTU can directly control the operation of pole-mounted switching equipment, such as promptly disconnecting the faulty line to prevent the fault from escalating, ensuring normal power supply to non-faulty areas, and comprehensively improving the reliability and stability of the distribution network operation. When the installation scenario of the PT device with integrated carrier communication requires the addition of carrier communication functionality, it is only necessary to replace or modify the FTU without carrier communication functionality into a composite FTU with carrier communication functionality, without requiring a power outage on the primary side of the PT device with integrated carrier communication, thus reducing the area affected by secondary construction power outages.

[0090] Finally, this embodiment provides a power distribution system including the aforementioned integrated pole-mounted switchgear. For example... Figure 6As shown, A, B, and C are pole-mounted switchgear, and BC represent electrical wiring concealed within the beam. When a fault occurs between B and C, after confirming the fault area, the pole-mounted switchgear located on both sides of the faulty section quickly trips its switches according to a preset control strategy, isolating the faulty area from the non-faulty area. During this process, the pole-mounted switchgear can receive control commands or confirmation information from other devices via carrier communication, ensuring the accuracy and reliability of the fault isolation operation. After fault isolation is completed, the pole-mounted switchgear coordinates with other devices via carrier communication, controlling the closing operation of tie switches or other relevant switches according to network reconfiguration strategies and load conditions to restore power supply to the non-faulty area. During power restoration, voltage, current, and other electrical quantities are continuously monitored to ensure the safety and stability of the power supply.

[0091] Compared to current industry-leading distributed fiber optic communication and 5G communication, which require infrastructure deployment (fiber optic requires laying cables and 5G requires base stations, both of which are costly and not widely applicable), carrier communication requires no additional infrastructure. It can complete communication between devices within 50ms and isolate the fault point within 200ms after a fault occurs. Then, based on the line topology, self-healing switches can be implemented on non-faulty sections, for example, power can be supplied through another substation via the right-hand line of C.

[0092] Therefore, it can be seen that after a fault occurs, this embodiment can accurately locate the fault location and realize the functions of fault isolation, self-healing switch and fault location in the power distribution system through carrier communication, which greatly improves the convenience of subsequent maintenance.

[0093] The PT apparatus, device, and system for fused carrier communication provided in this application have been described in detail above. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0094] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

Claims

1. A PT device for integrated carrier communication, comprising: The terminal block and PT core are characterized in that they further include: a medium-voltage carrier coupler, a carrier board, and an aviation connector, wherein the PT core, the medium-voltage carrier coupler, and the carrier board are integrated into a single design; The input terminal of the medium-voltage carrier coupler is connected to the terminal block; The input terminal of the PT core is connected to the terminal block; The output terminal of the medium-voltage carrier coupler is connected to the input terminal of the carrier board; The output terminal of the carrier board is connected to the aviation plug; The output end of the PT magnetic core is connected to the aviation plug.

2. The PT device for fused carrier communication according to claim 1, characterized in that, Also includes: Fuse; The first end of the fuse is connected to the terminal block; The second end of the fuse is connected to the medium-voltage carrier coupler and the PT core.

3. The PT device for fused carrier communication according to claim 2, characterized in that, The fuses include carrier fuses and PT fuses; The carrier fuse is disposed between the terminal and the medium-voltage carrier coupler; The PT fuse is disposed between the terminal and the PT core.

4. The PT device for fused carrier communication according to claim 1, characterized in that, The aircraft connector is a multi-functional composite aircraft connector; The first input terminal of the multifunctional composite aviation plug is connected to the output terminal of the carrier board; The second input terminal of the multifunctional composite aero plug is connected to the output terminal of the PT magnetic core.

5. The PT device for fused carrier communication according to claim 1, characterized in that, The aviation connectors are carrier aviation connectors and power aviation connectors; The input terminal of the carrier insertion plug is connected to the output terminal of the carrier board; The input terminal of the power connector is connected to the output terminal of the PT core.

6. The PT device for fused carrier communication according to claim 1, characterized in that, The medium-voltage carrier coupler includes: a high-voltage capacitor and a coupling plate; The first terminal of the high-voltage capacitor is connected to the terminal block as the input terminal of the medium-voltage carrier coupler. The second terminal of the high-voltage capacitor is connected to the input terminal of the coupling plate; The output end of the coupling plate is connected to the input end of the carrier plate as the output end of the medium-voltage carrier coupler.

7. The PT device for converged carrier communication according to any one of claims 1 to 6, characterized in that, Also includes: lightning arrester; The first end of the surge arrester is connected to the terminal block; The second terminal of the surge arrester is grounded.

8. An integrated pole-mounted switchgear, characterized in that, The device includes a PT device for fused carrier communication as described in any one of claims 1 to 7, and an FTU connected to the secondary side of the PT device for fused carrier communication, wherein the FTU is used to detect and process circuit faults in the distribution network.

9. The integrated pole-mounted switchgear according to claim 8, characterized in that, Also includes: A pole-mounted circuit breaker is connected to the primary side of the PT device of the fused carrier communication and is used to automatically disconnect the circuit when the power system experiences overload, short circuit or other faults.

10. A power distribution system, characterized in that, Includes the integrated pole-mounted switchgear as described in claim 8 or 9.

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