Intelligent traction substation power cable output section device based on online monitoring

Abstract

The utility model discloses an intelligent traction substation power cable output section device based on online monitoring. The system comprises an outdoor terminal (2) used for being connected with a power transmission network, a transmission cable (1) arranged between the outdoor terminal (2) and the intelligent traction substation, an optical fiber temperature measuring instrument (4) arranged on the transmission cable (1), and a grounding ring current online monitoring assembly arranged between the outdoor terminal (2) and the transmission cable (1). The outdoor terminal (2) and the transmission cable (1) realize the connection between a power transmission network and the intelligent traction substation, and the optical fiber thermodetector (4) realizes the on-line monitoring of the working temperature of the transmission cable (1). The grounding ring current on-line monitoring assembly realizes on-line monitoring of the grounding ring current at the connection part of the outdoor terminal (2) and the transmission cable (1), so that the safety performance of power transmission of the intelligent traction substation is improved.

Description

Technical Field

[0001] This utility model relates to an intelligent traction substation power cable output section device, and more particularly to an intelligent traction substation power cable output section device based on online monitoring. Background Technology

[0002] Intelligent substations mainly consist of two parts: intelligent high-voltage equipment and a unified information platform for the substation. When the operating mode changes, the equipment decides whether to adjust the taps based on the system's voltage and power conditions. When equipment malfunctions, it issues warnings and provides status parameters, thereby reducing operation and management costs, minimizing potential hazards, and improving the operational reliability of intelligent traction substations. Therefore, online monitoring-based intelligent traction substation power cable output section devices are an important type of power device. Currently, there are no existing online monitoring-based intelligent traction substation power cable output section devices; all still use cables for power transmission. During operation, cables may experience abnormal circulating currents and temperature increases due to excessive load, aging, poor contact, etc., potentially leading to fires and other safety accidents, thus affecting the safety performance of power transmission in intelligent traction substations. Summary of the Invention

[0003] The subject of this utility model is an intelligent traction substation power cable output section device based on online monitoring.

[0004] In order to overcome the above-mentioned technical shortcomings, the purpose of this utility model is to provide a power cable output section device for intelligent traction substations based on online monitoring, thereby improving the safety performance of power transmission in intelligent traction substations.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes an outdoor terminal for connecting to the power transmission network, a transmission cable installed between the outdoor terminal and the intelligent traction substation, a fiber optic thermometer installed on the transmission cable, and an online grounding circulation monitoring component installed between the outdoor terminal and the transmission cable.

[0006] By designing an outdoor terminal, transmission cable, fiber optic thermometer, and online grounding current monitoring component, the connection between the power transmission network and the intelligent traction substation is achieved through the outdoor terminal and transmission cable. The fiber optic thermometer enables online monitoring of the operating temperature of the transmission cable, and the online grounding current monitoring component enables online monitoring of the grounding current at the connection point between the outdoor terminal and the transmission cable. This ensures that the operating status of the power output section of the intelligent traction substation is under online monitoring signal, solving the technical problem of power transmission using cables and thus improving the safety performance of power transmission in the intelligent traction substation.

[0007] This utility model designs an online grounding current monitoring component, which includes a grounding current sensor, a grounding current collector, and a CT power supply.

[0008] The technical effects of the above four technical solutions are: highlighting the technical feature of keeping the working status of the power output section of the intelligent traction substation under online monitoring signals, and introducing its application in the technical field of power cable output section devices for intelligent traction substations based on online monitoring.

[0009] This utility model is designed to include a first accessory device, which is disposed between the transmission cable and the grounding current online monitoring component, and the first accessory device is configured as an intermediate connector.

[0010] This utility model is designed to include a second accessory device, which is installed on the fiber optic thermometer and the grounding current online monitoring component. The second accessory device is configured as a LORA wireless module, an online monitoring instrument, and a background data monitoring instrument.

[0011] The technical effect of the above two technical solutions is that they enable the integrated installation of other components and expand the technical effect of this utility model.

[0012] This utility model is designed with an outdoor terminal, an intermediate connector, a fiber optic thermometer, and a CT power source installed on the transmission cable. A grounding current sensor is installed between the outdoor terminal and the transmission cable and on the intermediate connector. A grounding current collector and a CT power source are installed on the grounding current sensor. A LoRa wireless module is installed between the grounding current collector and the fiber optic thermometer and the online monitoring instrument. A background data monitoring instrument is installed on the online monitoring instrument.

[0013] The technical effect of the above technical solution is that the basic technical solution of this utility model is composed of transmission cable, outdoor terminal, intermediate joint, fiber optic thermometer, grounding current sensor, grounding current collector, LORA wireless module, online monitoring instrument, background data monitoring instrument and CT power supply, which solves the technical problem of this utility model.

[0014] This utility model designs a transmission cable with a temperature-measuring optical fiber, the temperature-measuring optical fiber of the transmission cable is connected to an optical fiber thermometer, one end of the transmission cable is connected to an outdoor terminal, the ends of two adjacent transmission cables are connected to an intermediate connector, and the transmission cable is connected to the CT power supply through a through connection.

[0015] This utility model is designed such that the outdoor terminal is configured as a high-voltage cold-shrink terminal, with one end of the outdoor terminal configured to be connected to the transmission cable, the other end of the outdoor terminal configured to be connected to the power transmission network, and the connection part between the outdoor terminal and the transmission cable configured to be connected to the grounding circulating current sensor.

[0016] The technical effect of the above solution is that it enables the cable connection of temperature measurement optical fiber between the intelligent traction substation and the power transmission network.

[0017] This utility model is designed such that the input interface of the fiber optic thermometer is connected to the transmission cable and the output interface of the fiber optic thermometer is connected to the LORA wireless module.

[0018] The technical effect of the above solution is that it enables the acquisition and measurement of temperature signals.

[0019] This utility model designs a CT power supply device that is connected to a transmission cable in a sleeve configuration, and the output interface of the CT power supply is connected to a grounding circulating current sensor.

[0020] This utility model is designed such that the grounding circulating current sensor is respectively set to be connected to the connection part of the outdoor terminal and the transmission cable and the intermediate connector in a package, and the output interface of the grounding circulating current sensor is set to be connected to the grounding circulating current collector, and the power interface of the grounding circulating current sensor is set to be connected to the CT for power supply.

[0021] This utility model designs a grounding current collector as a grounding current online monitoring system, wherein the input interface of the grounding current collector is connected to a grounding current sensor, and the output interface of the grounding current collector is connected to a LORA wireless module.

[0022] The technical effect of the above three technical solutions is that they enable the pickup and measurement of grounding current signals.

[0023] This utility model designs an intermediate joint comprising a joint portion, an intermediate tube portion, a joint stress cone portion, a first edge tube, a second edge tube, an inner sheath portion, and an outer sheath portion. The ends of the joint portion are respectively configured to connect to the metal core of the transmission cable. The intermediate tube portion is configured to be fitted with the joint portion. The inner sheath portion is respectively configured to be fitted with the intermediate tube portion and the inner insulation layer of the transmission cable. The joint stress cone portion is located between the inner sheath portion and the inner insulation layer of the transmission cable, and the inner surface of the joint stress cone portion is configured to contact the inner insulation layer of the transmission cable. The outer surface of the joint stress cone portion is configured to contact the inner surface of the inner sheath portion. The first edge tube and the second edge tube are respectively configured to be fitted with the inner insulation layer of the transmission cable. The outer sheath portion is respectively configured to be fitted with the outer insulation layer of the transmission cable, the first edge tube, the second edge tube, and the inner sheath portion, and the outer sheath portion is configured to be through-connected to a grounding circulating current sensor.

[0024] This utility model is designed with a connector portion configured as a cylindrical body with an annular ring in the middle, and the peripheral side of the annular ring of the connector portion configured to be in contact with the middle tube portion. The middle tube portion, the first edge tube and the second edge tube are configured as insulating cylindrical bodies, and the connector stress cone portion is configured as a cable connector stress cone. The inner sheath portion is configured as a heat shrinkable sleeve and the outer sheath portion is configured as a rubber sleeve.

[0025] The technical effect of the above two solutions is that they enable the connection of transmission cables.

[0026] This utility model is designed such that the input interface of the LORA wireless module is respectively set to connect to the fiber optic thermometer and the grounding current collector, and the output interface of the LORA wireless module is respectively set to connect to the online monitoring instrument.

[0027] The technical effect of the above solution is that it enables remote wireless transmission of signals.

[0028] This utility model designs an online monitoring instrument for monitoring electrical signals, wherein the input interface of the online monitoring instrument is configured to be connected to a LoRa wireless module, and the output interface of the online monitoring instrument is configured to be connected to a background data monitoring instrument.

[0029] This utility model designs a background data monitoring device that is configured as a computer with a CPU and whose input interface is connected to an online monitoring device.

[0030] The technical effect of the above two solutions is that they enable data processing, analysis, and storage of signals.

[0031] In this technical solution, the transmission cable, outdoor terminal, and fiber optic thermometer are the basic components and essential technical features of this utility model. The intermediate joint, grounding current sensor, grounding current collector, LORA wireless module, online monitoring instrument, background data monitoring instrument, and CT power supply are functional components and features that enable other technical effects of this utility model. The design of the joint, intermediate tube, joint stress cone, first edge tube, second edge tube, inner sheath, and outer sheath are technical features that comply with the Patent Law and its implementing regulations.

[0032] In this technical solution, the operation of the power output section of the intelligent traction substation is kept under online monitoring signals by a fiber optic thermometer and an online grounding current monitoring component.

[0033] The key technical features of this technical solution are the outdoor terminal, transmission cable, fiber optic thermometer, and grounding current online monitoring component that enable the power output section of the intelligent traction substation to operate under online monitoring signals. In the technical field of intelligent traction substation power cable output section devices based on online monitoring, this solution is novel, inventive, and practical. The terminology used in this technical solution can be explained and understood using patent literature in this technical field. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of one of the first embodiments of the present utility model.

[0036] Figure 2 This is a schematic diagram of the intermediate joint 3.

[0037] Transmission cable-1, outdoor terminal-2, intermediate joint-3, fiber optic thermometer-4, grounding current sensor-5, grounding current collector-6, LORA wireless module-7, online monitoring instrument-8, background data monitoring instrument-9, CT power supply-90, joint section-31, intermediate tube section-32, joint stress cone section-33, first edge tube-34, second edge tube-35, inner sheath section-36, outer sheath section-37. Detailed Implementation

[0038] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood as not dispensing the presence or addition of one or more other elements or combinations thereof.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. If the processing conditions are not explicitly stated, please refer to the instruction manual of the purchased product.

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Figure 1This is one of the first embodiments of the present invention. The embodiment is described in detail with reference to the accompanying drawings. It includes a transmission cable 1, an outdoor terminal 2, an intermediate connector 3, a fiber optic thermometer 4, a grounding current sensor 5, a grounding current collector 6, a LoRa wireless module 7, an online monitoring instrument 8, a background data monitoring instrument 9, and a CT power supply 90. The outdoor terminal 2, intermediate connector 3, fiber optic thermometer 4, and CT power supply 90 are respectively installed on the transmission cable 1. The grounding current sensor 5 is installed between the outdoor terminal 2 and the transmission cable 1, and on the intermediate connector 3. The grounding current collector 6 and CT power supply 90 are respectively installed on the grounding current sensor 5. The LoRa wireless module 7 is installed between the grounding current collector 6, the fiber optic thermometer 4, and the online monitoring instrument 8. The background data monitoring instrument 9 is installed on the online monitoring instrument 8.

[0044] The second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0045] In this embodiment, the transmission cable 1 is configured as a cable with a temperature-measuring optical fiber and the temperature-measuring optical fiber of the transmission cable 1 is configured to be connected to the optical fiber thermometer 4. One end of the transmission cable 1 is configured to be connected to the outdoor terminal 2, the ends of two adjacent transmission cables 1 are configured to be connected to the intermediate connector 3, and the transmission cable 1 is configured to be connected to the CT power supply 90 through the cable.

[0046] Through the transmission cable 1, a supporting connection point is formed for the outdoor terminal 2, intermediate connector 3, fiber optic thermometer 4, and CT power supply 90. The transmission cable 1 realizes the connection with the outdoor terminal 2, the intermediate connector 3, the fiber optic thermometer 4, and the CT power supply 90. Its technical purpose is to serve as a component for connecting to the output end of the intelligent traction substation.

[0047] In this embodiment, the outdoor terminal 2 is configured as a high-voltage cold-shrink terminal, and one end of the outdoor terminal 2 is configured to be connected to the transmission cable 1, the other end of the outdoor terminal 2 is configured to be connected to the power transmission network, and the connection part between the outdoor terminal 2 and the transmission cable 1 is configured to be connected to the grounding circulating current sensor 5.

[0048] Outdoor terminal 2 forms a support connection point for transmission cable 1 and grounding current sensor 5. Outdoor terminal 2 realizes the connection with transmission cable 1 and grounding current sensor 5. Its technical purpose is to serve as a component for connecting to the power transmission network.

[0049] In this embodiment, the intermediate joint 3 is configured to include a joint portion 31, an intermediate tube portion 32, a joint stress cone portion 33, a first edge tube 34, a second edge tube 35, an inner sheath portion 36, and an outer sheath portion 37. The ends of the joint portion 31 are respectively configured to connect to the metal core of the transmission cable 1. The intermediate tube portion 32 is configured to be fitted with the joint portion 31. The inner sheath portion 36 is respectively configured to be fitted with the intermediate tube portion 32 and the inner insulation layer of the transmission cable 1. The joint stress cone portion 33 is disposed between the inner sheath portion 36 and the inner insulation layer of the transmission cable 1. The inner side of the joint stress cone 33 is configured to contact the inner insulation layer of the transmission cable 1, the outer side of the joint stress cone 33 is configured to contact the inner side of the inner sheath 36, and the first edge tube 34 and the second edge tube 35 are respectively configured to be internally connected to the inner insulation layer of the transmission cable 1. The outer sheath 37 is respectively configured to be internally connected to the outer insulation layer of the transmission cable 1, the first edge tube 34, the second edge tube 35 and the inner sheath 36, and the outer sheath 37 is configured to be connected through the grounding circulating current sensor 5.

[0050] The intermediate connector 3 forms a support connection point for the transmission cable 1 and the grounding current sensor 5. The intermediate connector 3 enables the connection with the transmission cable 1 and the grounding current sensor 5. Its technical purpose is to serve as a component for connecting the transmission cables 1.

[0051] In this embodiment, the connector 31 is configured as a cylindrical body with an annular ring in the middle, and the peripheral side of the annular ring of the connector 31 is configured to be in contact with the intermediate tube 32. The intermediate tube 32, the first edge tube 34 and the second edge tube 35 are configured as insulating cylindrical bodies, and the connector stress cone 33 is configured as a cable connector stress cone. The inner sheath 36 is configured as a heat shrink tubing and the outer sheath 37 is configured as a rubber tubing.

[0052] Its technical purpose is to achieve the connection of intermediate metal tubes between transmission cables 1.

[0053] In this embodiment, the input interface of the fiber optic thermometer 4 is configured to be connected to the transmission cable 1, and the output interface of the fiber optic thermometer 4 is configured to be connected to the LORA wireless module 7.

[0054] The fiber optic thermometer 4 forms a support connection point for the transmission cable 1 and the LORA wireless module 7. The fiber optic thermometer 4 realizes the connection with the transmission cable 1 and the LORA wireless module 7. Its technical purpose is to serve as a component for measuring the temperature of the transmission cable 1.

[0055] In this embodiment, the CT power take-off 90 is configured as a CT power take-off device and is configured to be connected to the transmission cable 1 in a package. The output interface of the CT power take-off 90 is configured to be connected to the grounding circulating current sensor 5.

[0056] By drawing power from the CT 90, a support connection point is formed for the transmission cable 1 and the grounding circulating current sensor 5. The CT 90 enables the connection with the transmission cable 1 and the grounding circulating current sensor 5. Its technical purpose is to serve as a component for powering the grounding circulating current sensor 5.

[0057] In this embodiment, the grounding current sensor 5 is respectively set to be connected to the connection part of the outdoor terminal 2 and the transmission cable 1 and the intermediate connector 3, and the output interface of the grounding current sensor 5 is set to be connected to the grounding current collector 6, and the power interface of the grounding current sensor 5 is set to be connected to the CT power supply 90.

[0058] The grounding current sensor 5 forms a support connection point for the transmission cable 1, the outdoor terminal 2, and the intermediate connector 3. The grounding current sensor 5 realizes the connection with the transmission cable 1, the connection with the outdoor terminal 2, and the connection with the intermediate connector 3. Its technical purpose is to serve as a component for picking up the grounding current signal in the connection part between the outdoor terminal 2 and the transmission cable 1 and the intermediate connector 3.

[0059] In this embodiment, the ground circulation current collector 6 is configured as a ground circulation current online monitoring system, and the input interface of the ground circulation current collector 6 is configured to be connected to the ground circulation current sensor 5, and the output interface of the ground circulation current collector 6 is configured to be connected to the LORA wireless module 7.

[0060] The ground current collector 6 forms a support connection point for the ground current sensor 5 and the LORA wireless module 7. The ground current collector 6 realizes the connection with the ground current sensor 5 and the LORA wireless module 7. Its technical purpose is to serve as a component for data processing and display of the signal transmitted by the ground current sensor 5.

[0061] In this embodiment, the input interface of the LORA wireless module 7 is respectively connected to the fiber optic thermometer 4 and the grounding current collector 6, and the output interface of the LORA wireless module 7 is respectively connected to the online monitoring instrument 8.

[0062] The LORA wireless module 7 forms a support connection point for the fiber optic thermometer 4, the grounding current collector 6, and the online monitor 8. The LORA wireless module 7 realizes the connection with the fiber optic thermometer 4, the grounding current collector 6, and the online monitor 8. Its technical purpose is to serve as a component for transmitting signals in the fiber optic thermometer 4 and the grounding current collector 6.

[0063] In this embodiment, the online monitoring device 8 is configured as an online monitoring device for electrical signals, and the input interface of the online monitoring device 8 is configured to be connected to the LORA wireless module 7, and the output interface of the online monitoring device 8 is configured to be connected to the background data monitoring device 9.

[0064] The online monitoring instrument 8 forms a support connection point for the LORA wireless module 7 and the background data monitoring instrument 9. The online monitoring instrument 8 realizes the connection with the LORA wireless module 7 and the background data monitoring instrument 9. Its technical purpose is to serve as a component for online image display of the signals in the fiber optic thermometer 4 and the grounding current collector 6.

[0065] In this embodiment, the background data monitoring device 9 is configured as a computer with a CPU and the input interface of the background data monitoring device 9 is configured to be connected to the online monitoring device 8.

[0066] The background data monitoring device 9 forms a support connection point for the online monitoring device 8. The background data monitoring device 9 realizes the connection with the online monitoring device 8. Its technical purpose is to serve as a component for data processing and storage of signals from the fiber optic thermometer 4 and the grounding current collector 6.

[0067] The method of use in this embodiment is as follows: The end of the transmission cable 1 is stripped, exposing the inner insulation layer. The intermediate tube 32, the joint stress cone 33, the first edge tube 34, the second edge tube 35, the inner sheath 36, and the outer sheath 37 are fitted onto the transmission cable 1. The metal core of the transmission cable 1 is installed in the port of the joint 31. The first edge tube 34 and the second edge tube 35 are respectively installed inside the inner insulation layer of the transmission cable 1. The intermediate tube 32 is fitted onto the joint 31. The inner sheath 36 is fitted onto the intermediate tube 32 and the inner insulation layer of the transmission cable 1. The joint stress cone 33 is installed between the inner sheath 36 and the inner insulation layer of the transmission cable 1. The outer sheath 37 is fitted onto the outer insulation layer, the first edge tube 34, the second edge tube 35, and the inner sheath 36 of the transmission cable 1. The CT is then taken... Power supply 90 is installed on transmission cable 1. Grounding current sensor 5 is installed on the connection between outdoor terminal 2 and transmission cable 1, and on intermediate connector 3. The power interface of grounding current sensor 5 is connected to the output interface of CT power supply 90. The output interface of grounding current sensor 5 is connected to the input interface of grounding current collector 6. The output interfaces of fiber optic thermometer 4 and grounding current collector 6 are connected to the input interface of LORA wireless module 7. The output interface of online monitor 8 is set to connect to the input interface of background data monitoring instrument 9.

[0068] The temperature of the transmission cable 1 in operation is monitored online by the fiber optic thermometer 4. The grounding current sensor 5 picks up the grounding current signal at the connection between the outdoor terminal 2 and the transmission cable 1 and the intermediate joint 3. The grounding current collector 6 monitors the grounding current signal online. The temperature signal and the grounding current signal are wirelessly transmitted to the online monitoring instrument 8 by the LoRa wireless module 7. The online monitoring instrument 8 displays the temperature signal and the grounding current signal online. The background data monitoring instrument 9 processes and stores the temperature signal and the grounding current signal, thus realizing online monitoring of the working status of the transmission cable 1, the outdoor terminal 2 and the intermediate joint 3.

[0069] In verifying this utility model, the inventors abandoned the existing technical features that all use cables for power transmission and first proposed a technical feature that puts the working state of the power output section of the intelligent traction substation under online monitoring signals. This resulted in the first unexpected technical effect: online monitoring of the connection status between the transmission cable 1, outdoor terminal 2, and intermediate connector 3 was achieved, improving the operational reliability of the power output section device of the intelligent traction substation. The second unexpected technical effect: temperature signals were used as detection signals, improving the efficiency of power transmission. The third unexpected technical effect: the connection of the transmission cable 1 by the intermediate connector 3 was achieved, improving the connection effect of the transmission cable 1. The fourth unexpected technical effect: the signal was transmitted by the LORA wireless module 7, improving the reliability of signal transmission. The fifth unexpected technical effect: signal data processing was achieved by the online monitoring instrument 8 and the background data monitoring instrument 9, facilitating data analysis and providing data support for the technical improvement of the power output section of the intelligent traction substation.

[0070] In the second embodiment of this utility model, the outdoor terminal 2, transmission cable 1, fiber optic thermometer 4, and grounding current online monitoring component are interconnected in a manner that keeps the working state of the power output section of the intelligent traction substation under online monitoring signal.

[0071] In this embodiment, the grounding current online monitoring component is connected to the outdoor terminal 2, the transmission cable 1, and the fiber optic thermometer 4 in a manner that enables online monitoring of the grounding current at the connection point.

[0072] In this embodiment, the grounding current online monitoring component includes a grounding current sensor 5, a grounding current collector 6, and a CT power supply 90.

[0073] In this embodiment, a first accessory device is also included and is disposed between the transmission cable 1 and the grounding current online monitoring component. The first accessory device is configured as an intermediate connector 3.

[0074] In this embodiment, a second accessory device is also included, and the second accessory device is disposed on the fiber optic thermometer 4 and the grounding circulation current online monitoring component. The second accessory device is configured as the LORA wireless module 7, the online monitoring instrument 8, and the background data monitoring instrument 9.

[0075] The second embodiment of this utility model is based on the first embodiment.

[0076] This utility model has the following features:

[0077] 1. By designing an outdoor terminal 2, transmission cable 1, fiber optic thermometer 4, and grounding current online monitoring component, the connection between the power transmission network and the intelligent traction substation is realized through the outdoor terminal 2 and transmission cable 1. The fiber optic thermometer 4 enables online monitoring of the operating temperature of the transmission cable 1. The grounding current online monitoring component enables online monitoring of the grounding current at the connection point between the outdoor terminal 2 and the transmission cable 1. This ensures that the operating status of the power output section of the intelligent traction substation is under online monitoring signal, solving the technical problem of power transmission using cables and thus improving the safety performance of power transmission in the intelligent traction substation.

[0078] 2. Due to the design of grounding current sensor 5, grounding current collector 6 and CT power supply 90, the grounding current signal can be picked up by a self-contained power supply.

[0079] 3. Due to the design of intermediate joint 3, the transmission cables 1 can be interconnected.

[0080] 4. Due to the design of the LORA wireless module 7, online monitoring instrument 8, and background data monitoring instrument 9, remote processing and storage of temperature and grounding current signals are realized.

[0081] 5. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this utility model, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of the numerical range has achieved very good technical effect.

[0082] 6. Due to the design of the technical features of this utility model, and the combined effect of the individual and collective technical features, experiments have shown that the performance indicators of this utility model are at least 1.7 times that of existing performance indicators, and it has been evaluated as having great market value.

[0083] Other technical features that connect the outdoor terminal 2, transmission cable 1, fiber optic thermometer 4, and grounding current online monitoring component to the power output section of the intelligent traction substation under online monitoring signals are also embodiments of this utility model. Furthermore, the technical features of the above embodiments can be combined arbitrarily. In order to meet the requirements of the Patent Law, Patent Implementation Regulations, and Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0084] Therefore, in the technical field of intelligent traction substation power cable output section device based on online monitoring, all technical contents that include an outdoor terminal 2 for connecting to the power transmission network, a transmission cable 1 installed between the outdoor terminal 2 and the intelligent traction substation, a fiber optic thermometer 4 installed on the transmission cable 1, and an online monitoring component for grounding circulation current installed between the outdoor terminal 2 and the transmission cable 1 are within the protection scope of this utility model.

Claims

1. A smart traction substation power cable output section device based on online monitoring, characterized in that: It includes an outdoor terminal (2) for connecting to the power transmission network, a transmission cable (1) installed between the outdoor terminal (2) and the intelligent traction substation, a fiber optic thermometer (4) installed on the transmission cable (1), and an online monitoring component for grounding circulation current installed between the outdoor terminal (2) and the transmission cable (1).

2. The intelligent traction substation power cable output section device based on online monitoring according to claim 1, characterized in that: The grounding current online monitoring component includes a grounding current sensor (5), a grounding current collector (6), and a CT power supply (90). It also includes a first accessory device and is disposed between the transmission cable (1) and the grounding current online monitoring component, the first accessory device being configured as an intermediate connector (3). It also includes a second accessory device and the second accessory device is set on the fiber optic thermometer (4) and the grounding current online monitoring component. The second accessory device is set as the LORA wireless module (7), the online monitoring instrument (8) and the background data monitoring instrument (9).

3. The intelligent traction substation power cable output section device based on online monitoring according to claim 2, characterized in that: An outdoor terminal (2), an intermediate connector (3), a fiber optic thermometer (4), and a CT power supply (90) are respectively installed on the transmission cable (1). A grounding current sensor (5) is installed between the outdoor terminal (2) and the transmission cable (1) and on the intermediate connector (3). A grounding current collector (6) and a CT power supply (90) are respectively installed on the grounding current sensor (5). A LORA wireless module (7) is installed between the grounding current collector (6), the fiber optic thermometer (4), and the online monitoring instrument (8). A background data monitoring instrument (9) is installed on the online monitoring instrument (8).

4. The intelligent traction substation power cable output section device based on online monitoring according to claim 3, characterized in that: The transmission cable (1) is configured to have a temperature measuring fiber and the temperature measuring fiber of the transmission cable (1) is configured to be connected to the fiber optic thermometer (4). One end of the transmission cable (1) is configured to be connected to the outdoor terminal (2). The ends of two adjacent transmission cables (1) are configured to be connected to the intermediate connector (3) and the transmission cable (1) is configured to be connected to the CT power supply (90) in a through connection.

5. The intelligent traction substation power cable output section device based on online monitoring according to claim 4, characterized in that: The outdoor terminal (2) is configured as a high-voltage cold shrink terminal and one end of the outdoor terminal (2) is configured to be connected to the transmission cable (1), the other end of the outdoor terminal (2) is configured to be connected to the power transmission network, and the connection part of the outdoor terminal (2) and the transmission cable (1) is configured to be connected to the grounding circulating current sensor (5).

6. The intelligent traction substation power cable output section device based on online monitoring according to claim 5, characterized in that: The input interface of the fiber optic thermometer (4) is set to be connected to the transmission cable (1), and the output interface of the fiber optic thermometer (4) is set to be connected to the LORA wireless module (7).

7. The intelligent traction substation power cable output section device based on online monitoring according to claim 6, characterized in that: The CT power take-off (90) is configured as a CT power take-off device and is configured to be connected to the transmission cable (1) in a package. The output interface of the CT power take-off (90) is configured to be connected to the grounding circulating current sensor (5).

8. The intelligent traction substation power cable output section device based on online monitoring according to claim 7, characterized in that: The grounding current sensor (5) is respectively set to be connected to the connection part and intermediate connector (3) of the outdoor terminal (2) and the transmission cable (1), and the output interface of the grounding current sensor (5) is set to be connected to the grounding current collector (6), and the power interface of the grounding current sensor (5) is set to be connected to the CT power supply (90).

9. The intelligent traction substation power cable output section device based on online monitoring according to claim 8, characterized in that: The grounding current collector (6) is configured as an online monitoring system for grounding current, and the input interface of the grounding current collector (6) is configured to be connected to the grounding current sensor (5), and the output interface of the grounding current collector (6) is configured to be connected to the LORA wireless module (7).

10. The intelligent traction substation power cable output section device based on online monitoring according to claim 9, characterized in that: The intermediate joint (3) is configured to include a joint portion (31), an intermediate tube portion (32), a joint stress cone portion (33), a first edge tube (34), a second edge tube (35), an inner sheath portion (36), and an outer sheath portion (37). The ends of the joint portion (31) are respectively configured to be connected to the metal core of the transmission cable (1). The intermediate tube portion (32) is configured to be fitted to the joint portion (31). The inner sheath portion (36) is respectively configured to be fitted to the intermediate tube portion (32) and the inner insulation layer of the transmission cable (1). The joint stress cone portion (33) is disposed in the inner sheath portion (36) and the inner insulation layer of the transmission cable (1). The inner side of the joint stress cone (33) is configured to be in contact with the inner insulation layer of the transmission cable (1), the outer side of the joint stress cone (33) is configured to be in contact with the inner side of the inner sheath (36), and the first edge tube (34) and the second edge tube (35) are respectively configured to be in a sleeve connection with the inner insulation layer of the transmission cable (1). The outer sheath (37) is respectively configured to be in a sleeve connection with the outer insulation layer of the transmission cable (1), the first edge tube (34), the second edge tube (35) and the inner sheath (36), and the outer sheath (37) is configured to be in a through connection with the grounding circulating current sensor (5).

11. The intelligent traction substation power cable output section device based on online monitoring according to claim 10, characterized in that: The connector (31) is configured as a cylindrical body with an annular ring in the middle and the peripheral side of the annular ring of the connector (31) is configured to be in contact with the middle tube (32). The middle tube (32), the first edge tube (34) and the second edge tube (35) are configured as insulating cylindrical bodies and the connector stress cone (33) is configured as a cable connector stress cone. The inner sheath (36) is configured as a heat shrinkable sleeve and the outer sheath (37) is configured as a rubber sleeve.

12. The intelligent traction substation power cable output section device based on online monitoring according to claim 11, characterized in that: The input interfaces of the LORA wireless module (7) are respectively connected to the fiber optic thermometer (4) and the grounding current collector (6), and the output interfaces of the LORA wireless module (7) are respectively connected to the online monitoring instrument (8).

13. The intelligent traction substation power cable output section device based on online monitoring according to claim 12, characterized in that: The online monitoring instrument (8) is configured as an online monitoring instrument for electrical signals and the input interface of the online monitoring instrument (8) is configured to be connected to the LORA wireless module (7), and the output interface of the online monitoring instrument (8) is configured to be connected to the background data monitoring instrument (9).

14. The intelligent traction substation power cable output section device based on online monitoring according to claim 13, characterized in that: [Backend...] The data monitor (9) is configured as a computer with a CPU and the input interface of the background data monitor (9) is configured to be connected to the online monitor (8).

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