Traveling wave measurement module and power distribution feeder terminal device with traveling wave signal measurement function

Abstract

This application discloses a traveling wave measurement module and a distribution network feeder terminal device containing the traveling wave signal that can be measured. The module includes an outer casing, an FTU module, and the traveling wave measurement module, as well as a shielding layer disposed on the outer wall of the outer casing. It also includes a control mechanism for controlling the humidity inside the outer casing, comprising a humidity sensor, a control box, an adjustment component for reducing humidity through internal circulation, a condensation component for reducing humidity inside the outer casing through condensation, and a processing component for selecting the humidity treatment method. The outer casing is provided with an air outlet plate, and a sealing plate is movably disposed on the air outlet plate. The control box is provided with an air inlet and an air outlet, and a first solenoid valve is movably disposed at both the air inlet and the air outlet. The humidity sensor is disposed on the inner wall of the outer casing, and the air outlet is connected to the air outlet plate. This application has the effect of intelligently controlling the wet environment of the outer casing.

Description

Technical Field

[0001] This application relates to the field of power distribution networks, and in particular to a traveling wave measurement module and a power distribution network feeder terminal device containing the traveling wave signal that can be measured. Background Technology

[0002] Currently, the power distribution network is a crucial hub connecting power transmission and electricity users, and its power supply reliability directly impacts user experience. With the rapid development of distribution network automation, primary and secondary integration technology has been widely applied. Since distribution networks are often located in densely populated areas, failure to quickly isolate faults can lead to serious personal safety accidents. Therefore, current distribution network automation primarily employs on-site fault diagnosis, selectively isolating faulty sections to ensure rapid fault isolation and prevent escalation. Currently, distribution networks often use integrated primary and secondary switches to diagnose and isolate faults. Integrated primary and secondary equipment mainly includes pole-mounted switches, FTUs, and line loss modules. This technology allows modules of different types to interoperate within the same device. Primary distribution switchgear, in addition to automation functions, also possesses online detection and expert diagnostic system capabilities, using embedded industrial control software for monitoring, protection, and data transmission.

[0003] The integration of traveling wave modules (TWBs) with FTUs (Feeder Terminal Units) represents a significant technological advancement in distribution network automation. It combines TWB location technology with the functionality of FTUs, improving the accuracy and efficiency of fault location in distribution networks. TWBs are primarily used to measure the traveling wave current and voltage signals generated when a fault occurs in a distribution network line. These signals contain crucial information about the fault location, and their diagnostic analysis can assist in the decision-making and execution of distribution network automation equipment. TWBs typically include components such as Rogowski coils and capacitive voltage divider sensors, which efficiently capture the traveling wave signals generated by the fault. FTUs are key equipment in distribution network automation systems. They are responsible for collecting fault signals from distribution network lines, acquiring data from different monitoring nodes in real time, and transmitting this data to a data center or higher-level management system via a communication network. FTUs also possess fault identification, isolation, and remote control functions, making them an indispensable part of distribution network automation systems.

[0004] A related technology, Chinese patent application number CN202220637170.0, proposes a traveling wave measurement module, including: a Rogowski coil, a capacitive voltage divider sensor, a housing, and an analog board. The Rogowski coil and the capacitive voltage divider sensor are respectively mounted on the housing and electrically connected to the analog board. A distribution network feeder terminal device capable of measuring traveling wave signals includes an FTU module and a traveling wave measurement module, which are electrically connected to the FTU module. The beneficial effects are: without disassembling signal lines to create connectors, it can effectively measure the traveling wave current and voltage signals generated at the moment of a distribution network line fault; by diagnosing and analyzing the measured signals, it can assist in the decision-making and execution of distribution network automation equipment; it can achieve precise fault location at the hundred-meter level, assisting maintenance personnel in line inspection and reducing the manpower and material resources wasted in inspecting fault points.

[0005] Regarding the aforementioned technologies, the inventors believe that the following defects exist: if the ambient humidity of the traveling wave measurement module and the FTU module is too high, it is easy to damage the normal use of the components, or even cause the components to short circuit. Therefore, it is necessary to control the humidity in the environment. Summary of the Invention

[0006] To address the issue of high humidity affecting the normal operation of components, this application provides a traveling wave measurement module and a distribution network feeder terminal device containing the traveling wave signal that can be measured.

[0007] The traveling wave measurement module and the distribution network feeder terminal device containing the traveling wave signal that can be measured adopt the following technical solution: A traveling wave measurement module and a distribution network feeder terminal device containing the traveling wave signal that can be measured, comprising an outer casing, an FTU module and a traveling wave measurement module, wherein the signal output terminal of the traveling wave measurement module is electrically connected to the signal input terminal of the FTU module, and the traveling wave measurement module is built into the FTU module; It also includes a shielding layer disposed on the outer wall of the outer casing; The traveling wave measurement module includes: a Rogowski coil, a capacitive voltage divider sensor, a housing, an analog board, a DTU board, and a power supply module; The Rogowski coil and the capacitive voltage divider sensor are respectively mounted on the housing, and the Rogowski coil and the capacitive voltage divider sensor are respectively electrically connected to the analog board; The Rogowski coil and the capacitive voltage divider sensor are electrically connected to the analog board via coaxial cables. The simulation board has a first-stage amplifier circuit, a filter circuit, a second-stage amplifier circuit, and a phase-shifting circuit. The first-stage amplifier circuit is electrically connected to the filter circuit and the second-stage amplifier circuit, and the filter circuit and the second-stage amplifier circuit are electrically connected to the phase-shifting circuit. The Rogowski coil and the capacitive voltage divider sensor are electrically connected to the first-stage amplifier circuit. The simulation board is electrically connected to the DTU board; the simulation board is electrically connected to the power module; the power module includes: a power management module and a battery electrically connected to the power management module; It also includes a control mechanism for controlling the humidity inside the outer cover, the control mechanism including a humidity sensor, a control box, an adjustment component for reducing humidity through internal circulation, a condensation component for reducing humidity inside the outer cover through condensation, and a processing component for selecting the humidity processing method; The outer cover is provided with an air vent plate, and a sealing plate is movably provided on the air vent plate. The control box is provided with an air inlet and an air outlet, and a first solenoid valve is movably provided at both the air inlet and the air outlet of the control box. The humidity sensor is provided on the inner wall of the outer cover, and the air outlet is connected to the air vent plate.

[0008] Optionally, the control box further includes an adjustment chamber and a condensation chamber, both ends of which are connected to the air inlet and the air outlet, respectively; a second solenoid valve is provided at both ends of the adjustment chamber and the condensation chamber. The regulating component includes a fan and a temperature control unit. The fan is located at the air inlet, and the temperature control unit is located inside the regulating cavity.

[0009] Optionally, the temperature control unit includes a temperature control tube, a heat preservation tube, and a temperature control electric actuator for realizing the reciprocating motion of the temperature control tube, which are movably disposed in the adjustment cavity. The adjustment cavity is provided with a temperature control hole. The temperature control tube is filled with a phase change material. The heat preservation tube is fixed at the opening of the temperature control hole. After the temperature control tube extends out of the heat preservation tube, it contacts the FTU module. In the initial state, the temperature control tube is located inside the heat preservation tube. A sealing ring is provided at the bottom end of the heat preservation tube. The inner diameter of the sealing ring is initially smaller than the outer diameter of the temperature control tube.

[0010] Optionally, the condensation assembly includes a condensation plate and a condensation chamber, wherein the condensation plate is vertically arranged and located within the condensation cavity, and the condensation chamber is located below the condensation plate and within the condensation cavity.

[0011] Optionally, the processing component includes an elastic membrane, a winding part for movably setting the elastic membrane at the bottom of the condenser, an adsorption part for adsorbing the condensate, a judgment part for judging the humidity, and a detection part for detecting the presence of condensate. The bottom of the condenser is open and the condenser is funnel-shaped, and the elastic membrane is in close contact with the opening of the condenser.

[0012] Optionally, the judgment unit includes a temperature sensor and a power unit. The power unit is used to enable the temperature sensor to move to the position where the bottom of the elastic membrane is located when it is deformed to a specified size within a specified time. The temperature sensor controls the operation of the winding unit.

[0013] Optionally, the power unit includes a power box, a power plate, a power rod, and multiple power springs. The power box is filled with condensate. The power plate is slidably adapted to the power box. The power plate is provided with multiple power holes. One end of the power rod is fixedly connected to the power plate, and the other end of the power rod extends out of the power box and is fixedly connected to the temperature sensor. One end of the power spring is fixedly connected to the end of the power plate away from the power rod, and the other end is fixedly connected to the inner wall of the corresponding end of the power box.

[0014] Optionally, the detection unit includes a detection block, a contact block, absorbent paper, test paper, and an identification group movably disposed within the condensation chamber. The detection block has a hollow interior and an opening at one end facing the condensation plate. Multiple absorbent papers and test papers are provided. The contact block is disposed in the middle of the detection block, and the absorbent paper or test paper passes around the end of the contact block. The end of the contact block is located outside the detection block.

[0015] Optionally, the identification group includes a color sensor, two traction motors, two traction rollers, and multiple traction ropes. The traction ropes are used to connect the test paper and the absorbent paper. The traction rollers are rotatably disposed within the detection block. The traction motors are used to control the rotation of the traction rollers. The color sensor is disposed in the detection block and faces the test paper.

[0016] Optionally, the adsorption section includes a water-absorbing element and a humidification port. The water-absorbing element is located below the condensation chamber, and the humidification port is disposed on the bottom wall of the condensation chamber and is also funnel-shaped. The water-absorbing element is disposed inside the humidification port, and the size of the water-absorbing element is smaller than the maximum opening size of the humidification port. The humidification port is provided with a third solenoid valve.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. The integration technology of traveling wave modules and FTUs is suitable for distribution networks of various sizes, and has significant advantages, especially in complex environments such as urban power grids and rural power grids. In the event of a fault, this technology can quickly locate the fault point, providing maintenance personnel with accurate fault information, which helps to quickly restore power supply and reduce power outage time and losses; 2. The elastic membrane is pulled to the lower opening of the condensation chamber, and the membrane is in close contact with the opening. As condensate drips into the condensation chamber, the elastic membrane is stretched under the force of gravity until it reaches the same horizontal plane as the temperature sensor. This means the temperature sensor is initially positioned above the temperature sensor. Simultaneously, the electromagnet separates from the power rod. Under the elastic force of the power spring returning to its original shape, the power rod moves the temperature sensor towards the elastic membrane. However, water flows in the opposite direction after passing through the power hole, thus exerting resistance on the power plate and reducing its speed. This achieves the effect of controlling the time. If the temperature sensor and the power rod contact the elastic membrane when they reach the designated position, it indicates that the humidity in the outer environment still needs to be condensed. If the temperature sensor does not contact the elastic membrane, the humidity in the outer environment can be circulated internally. In this embodiment, the judgment between the elastic membrane and the temperature sensor is used to quantitatively determine the humidity. While the humidity sensor can identify the humidity in the outer environment, it cannot determine which treatment method is better. 3. In the initial state, after the phase change material inside the temperature control tube comes into contact with the corresponding heating element, the phase change material begins to store heat. Then, the temperature control tube is moved into the insulation tube by the temperature control electric actuator. During the movement of the temperature control tube into the insulation tube, the sealing ring deforms and can return to its original shape. The sealing ring is made of rubber material. When the temperature control tube extends out of the insulation tube, the sealing ring deforms. When the temperature control tube enters the insulation tube, the sealing ring returns to its original shape. The sealing ring begins to provide further insulation for the insulation tube. The insulation tube is also made of a material with heat insulation properties. When the humidity sensor detects that the humidity value in the outer environment is slightly higher than the set value, the condensation chamber is closed, the sealing plate is opened, and the temperature control tube is moved into the regulating chamber. The phase change material inside the temperature control tube begins to release heat. Under the heating effect of the temperature control tube, the dehumidification efficiency in the outer environment is greatly accelerated. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the FTU module and traveling wave measurement module according to an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 3 This is a schematic diagram of the control mechanism according to an embodiment of this application; Figure 4 yes Figure 2 An enlarged schematic diagram of part A in the middle; Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the middle; Figure 6 yes Figure 3 An enlarged schematic diagram of section C.

[0019] Reference numerals: 1. Outer casing; 2. FTU module; 3. Traveling wave measurement module; 4. Humidity sensor; 5. Control box; 6. Air outlet plate; 7. Air inlet; 8. Air outlet; 9. First solenoid valve; 10. Sealing plate; 11. Adjustment chamber; 12. Condensation chamber; 13. Second solenoid valve; 14. Fan; 15. Temperature control tube; 16. Insulation tube; 17. Temperature control electric actuator; 18. Temperature control hole; 19. Sealing ring; 20. Condensation plate; 21. Condensation box; 22. Elastic membrane; 23. Winding roller; 24. Winding rope; 25. 26. Winding motor; 27. Temperature sensor; 28. Power box; 29. ​​Power board; 30. Power rod; 31. Power spring; 32. Power hole; 33. Detection block; 34. Abutment block; 35. Absorbent paper; 36. Test paper; 37. Color sensor; 38. Traction rope; 39. Traction roller; 40. Humidification port; 41. Water absorption component; 42. Third solenoid valve; 330. Rogowski coil; 340. Capacitive voltage divider sensor; 350. Housing; 360. Analog board; 370. DTU board; 380. Power module. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0021] This application discloses a traveling wave measurement module 3 and a distribution network feeder terminal device containing the module capable of measuring traveling wave signals. (Refer to...) Figure 1A traveling wave measurement module 3 and a distribution network feeder terminal device containing the traveling wave signal for measurement include an outer casing 1, an FTU module 2, and the traveling wave measurement module 3. The signal output terminal of the traveling wave measurement module 3 is electrically connected to the signal input terminal of the FTU module 2, and the traveling wave measurement module 3 is built into the FTU module 2. The traveling wave measurement module 3 captures the traveling wave signal generated by the fault through a Rogowski coil 310 and a capacitive voltage divider sensor 320. After processing, these signals are sent to the FTU module 2, which is electrically connected to the traveling wave module. The FTU module 2 further analyzes and processes the received traveling wave signal, and calculates the fault location using a traveling wave positioning algorithm. This improves the accuracy of fault location: traveling wave positioning technology can achieve precise location of the fault point at the hundred-meter level, greatly improving the accuracy of fault location. It also reduces manpower and material costs: through precise positioning, maintenance personnel can find the fault point more quickly, reducing the manpower and material costs incurred in inspecting the fault point. Furthermore, it enhances the automation level of the distribution network: the integration of the traveling wave module and the FTU makes the distribution network automation system more complete, improving the automation level and intelligence of the entire system.

[0022] The integration of traveling wave modules and FTUs is applicable to distribution networks of all sizes, and has significant advantages, especially in complex environments such as urban and rural power grids. In the event of a fault, this technology can quickly locate the fault point, providing maintenance personnel with accurate fault information, which helps to restore power quickly and reduce power outage time and losses.

[0023] The integration of traveling wave modules and FTUs is applicable to distribution networks of all sizes, and has significant advantages, especially in complex environments such as urban and rural power grids. In the event of a fault, this technology can quickly locate the fault point, providing maintenance personnel with accurate fault information, which helps to restore power quickly and reduce power outage time and losses.

[0024] Furthermore, traveling wave modules and FTUs can be integrated with instrument transformers: electronic instrument transformers are used, which offer advantages such as high precision, wide dynamic range, and easy interface with digital systems. In the integration of traveling wave modules and FTUs, electronic instrument transformers can replace traditional electromagnetic instrument transformers, thereby improving the accuracy and real-time performance of data acquisition. Integrating the instrument transformer and FTU into a single unit not only reduces the equipment's footprint but also lowers installation and maintenance costs. Simultaneously, the integrated design also improves the reliability and stability of the equipment.

[0025] Redundant power supply design can also be adopted: To ensure continuous operation of the equipment, a redundant power supply design can be used. That is, when one power supply fails, the other power supply can automatically switch and provide power. This can improve the reliability and stability of the equipment.

[0026] Furthermore, a BeiDou receiver module integration can be designed: integrating the BeiDou receiver module into the FTU enables the FTU to receive signals from the BeiDou satellite navigation system. This not only enables precise positioning and timing functions of the equipment but also improves the intelligence level of the equipment. Data fusion processing: fusing BeiDou signals with data collected by the traveling wave module can further improve the automation and intelligence level of the power system. For example, BeiDou signals can be used for fault location and time synchronization.

[0027] Furthermore, dual-microcontroller software data sharing refers to using two microcontrollers to jointly process data and information. In the integration of the traveling wave module and FTU, dual-microcontroller software data sharing can be achieved in the following ways: Bus isolation and driving: To ensure safe and stable data and information transmission between the two microcontrollers, bus isolation and driving technology can be used. For example, a unidirectional bus driver with tri-state gates can be used for address bus isolation, and a bidirectional tri-state bus driver can be used for data bus isolation. This ensures the integrity and accuracy of data and information during transmission; Time-sharing and mutual exclusion mechanisms: To avoid conflicts or data loss when two microcontrollers access the same resource simultaneously, time-sharing and mutual exclusion mechanisms can be used. For example, a busy / idle control line can be set to query the busy / idle status of the external data RAM, and the access can be determined based on the query result. Mutual exclusion locks and other mechanisms can also be used to ensure data correctness and consistency; Software design optimization: By optimizing software design strategies, such as using efficient data processing algorithms and optimizing data structures, the efficiency and reliability of dual-microcontroller software data sharing can be further improved.

[0028] The traveling wave measurement module includes: Rogowski coil 310, capacitive voltage divider sensor 320, housing 330, analog board 340, DTU board 350, and power module 360. The Rogowski coil 310 and the capacitive voltage divider sensor 320 are respectively mounted on the housing 330, and the Rogowski coil 310 and the capacitive voltage divider sensor 320 are electrically connected to the analog board 340. The Rogowski coil 310 and the capacitive voltage divider sensor 320 are electrically connected to the analog board 340 via coaxial cables, which effectively ensures signal transmission.

[0029] The analog board 340 has a primary amplifier circuit, a filter circuit, a secondary amplifier circuit, and a phase shifter circuit. The primary amplifier circuit is electrically connected to the filter circuit and the secondary amplifier circuit, and the filter circuit and the secondary amplifier circuit are electrically connected to the phase shifter circuit. The Rogowski coil 310 and the capacitive voltage divider sensor 320 are electrically connected to the primary amplifier circuit. The primary and secondary amplifier circuits amplify the acquired signal for easy identification and processing, and select whether to perform two amplifications based on the signal value. The phase shifter circuit resets the offset generated after the signal passes through the aforementioned circuits, restoring the original signal phase. The analog board 340 is electrically connected to the DTU board 350; the analog board 340 is also electrically connected to the power module 360; the power module 360 ​​includes a power management module and a battery electrically connected to the power management module; the signals output by the analog board 340 can be transmitted to the data center through the DTU board 350. Battery discharge can be controlled to ensure optimal operation.

[0030] A Rogowski coil 310 and a capacitive voltage divider sensor 320 are mounted on the housing 330. The Rogowski coil 310 is used to measure the fault traveling wave current signal, and the capacitive voltage divider sensor 320 is used to measure the fault traveling wave voltage signal. The signal output terminal of the Rogowski coil 310 is electrically connected to the signal input terminal of the analog board 340; the signal output terminal of the capacitive voltage divider sensor 320 is electrically connected to the signal input terminal of the analog board 340. That is, the Rogowski coil 310 can upload the measured fault traveling wave current signal to the analog board 340; the capacitive voltage divider sensor 320 can upload the measured fault traveling wave voltage signal to the analog board 340, and the analog board 340 processes the signal to form a digital signal.

[0031] A distribution network feeder terminal device with measurable traveling wave signal can be used in primary and secondary integrated equipment, which typically includes: pole-mounted circuit breaker, current transformer, voltage transformer and distribution network feeder terminal device with measurable traveling wave signal.

[0032] It also includes a shielding layer disposed on the outer wall of the outer casing 1; and a metal shielding layer, such as copper foil, aluminum foil, or metal mesh, is added around the housing or critical circuits of the traveling wave module and FTU. These shielding layers can effectively block the intrusion of external electromagnetic waves and reduce the impact of electromagnetic interference on the internal circuits.

[0033] It also includes a control mechanism for controlling the humidity inside the outer cover 1. The control mechanism includes a humidity sensor 4, a control box 5, an adjustment component for reducing humidity through internal circulation, a condensation component for reducing humidity inside the outer cover 1 through condensation, and a processing component for selecting the humidity treatment method. The outer cover 1 is provided with an air outlet plate 6, and a sealing plate 10 is movably mounted on the air outlet plate 6. The control box 5 is provided with an air inlet 7 and an air outlet 8, and a first solenoid valve 9 is movably mounted at both the air inlet 7 and the air outlet 8. The humidity sensor 4 is located on the inner wall of the outer cover 1, and the air outlet 8 is connected to the air outlet plate 6. In this embodiment, the sealing plate 10... The sliding is achieved by an electric actuator. In the initial state, the sealing plate 10 blocks the air outlet plate 6 to prevent dust from entering the outer cover 1 or the humidity in the air from affecting the humidity of the outer cover 1. First, the humidity sensor 4 monitors the humidity in the environment of the outer cover 1. If the humidity sensor 4 is higher than the set value, it needs to be processed by the adjustment component or the condensation component. If the humidity sensor 4 detects a humidity value slightly higher than the set value, it is only necessary to circulate the environment within the outer cover 1 to achieve the humidity processing effect. However, if the humidity sensor 4 detects a humidity value much higher than the set value, the condensation component is required to process the humidity.

[0034] The control box 5 also includes an adjustment chamber 11 and a condensation chamber 12. Both ends of the adjustment chamber 11 and the condensation chamber 12 are connected to the air inlet 7 and the air outlet 8, respectively. Both ends of the adjustment chamber 11 and the condensation chamber 12 are equipped with second solenoid valves 13. That is, the adjustment chamber 11 is divided into two independent spaces for operation. When it is necessary to operate the adjustment component in the adjustment chamber 11, the condensation chamber 12 needs to be closed and the adjustment chamber 11 needs to be opened. Similarly, if the condensation component needs to operate, the adjustment chamber 11 needs to be closed and the condensation chamber 12 needs to be opened.

[0035] The adjustment assembly includes a fan 14 and a temperature control unit. The fan 14 is located at the air inlet 7, and the temperature control unit is located inside the adjustment cavity 11. The temperature control unit includes a temperature control tube 15, a heat insulation tube 16, and a temperature control electric actuator 17 for realizing the reciprocating motion of the temperature control tube 15, all movably disposed within the adjustment cavity 11. The adjustment cavity 11 is provided with a temperature control hole 18. The heat insulation tube 16 is fixed at the opening of the temperature control hole 18. After the temperature control tube 15 extends out of the heat insulation tube 16, it contacts the FTU module 2. In its initial state, the temperature control tube 15 is located inside the heat insulation tube 16. A sealing ring 19 is provided at the bottom end of the heat insulation tube 16. The inner diameter of the sealing ring 19 is initially smaller than the outer diameter of the temperature control tube 15. In this embodiment, the temperature control tube 15 is filled with a phase change material. The phase change material absorbs heat in a high-temperature environment and begins to release heat in a low-temperature environment. The temperature control tube 15 can transfer heat to the corresponding component after making contact nearby.

[0036] In the initial state, after the phase change material inside the temperature control tube 15 comes into contact with the corresponding heat-generating component, the phase change material begins to store heat. This heat is then moved into the insulation tube 16 by the temperature control electric actuator 17. During the movement of the temperature control tube 15 within the insulation tube 16, the sealing ring 19 deforms and returns to its original shape. The sealing ring 19 is made of rubber. When the temperature control tube 15 extends out of the insulation tube 16, the sealing ring 19 deforms. And when the temperature control tube 15 enters the insulation tube 16… The sealing ring 19 returns to its original shape and begins to further insulate the inside of the insulation tube 16. The insulation tube 16 is also made of a material with heat-insulating properties. When the humidity sensor 4 detects that the humidity value in the environment of the outer cover 1 is slightly higher than the set value, the condensation chamber 12 is closed, the sealing plate 10 is opened, and the temperature control tube 15 is moved into the adjustment chamber 11. The phase change material in the temperature control tube 15 begins to release heat, and the dehumidification efficiency in the environment of the outer cover 1 is greatly accelerated under the heating effect of the temperature control tube 15.

[0037] The condensation assembly includes a condenser plate 20 and a condenser box 21. The condenser plate 20 is vertically arranged and located inside the condensation chamber 12. The condenser box 21 is located below the condenser plate 20 and inside the condensation chamber 12. Similarly, when the humidity sensor 4 detects that the humidity in the environment of the outer cover 1 is much higher than the set value, the regulating chamber 11 is closed and the condensation chamber 12 is started. After the high humidity air enters the condensation chamber 12, the condenser plate 20 condenses into water and drips into the condenser box 21. With the fan 14 continuously circulating the air, the dehumidification effect is achieved.

[0038] The processing assembly includes an elastic membrane 22, a winding section for movably mounting the elastic membrane 22 at the bottom of the condenser 21, an adsorption section for adsorbing condensate, a judgment section for determining humidity, and a detection section for detecting the presence of condensate. The condenser 21 has an open bottom and is funnel-shaped, with the elastic membrane 22 tightly attached to the opening. The winding section includes four winding ropes 24, two winding rollers 23, and two winding motors 25. The winding motors 25 are installed inside the condensation chamber 12. 24 are fixedly connected to the four corners of the elastic membrane 22 respectively. The four winding ropes 24 are divided into two groups, and each group of winding ropes 24 is fixedly connected to the same winding roller 23 shaft. The winding motor 25 controls the rotation of the winding roller 23. In the initial state, the elastic membrane 22 is located below the condensation box 21. The elastic membrane 22 is made of a material that has the ability to deform and can restore its original shape. The judgment unit judges the humidity situation, that is, whether to use condensation or internal circulation. The adsorption unit is used to adsorb condensate and can also humidify the environment of the outer cover 1.

[0039] The judgment unit includes a temperature sensor 26 and a power unit. The power unit is used to ensure that the temperature sensor 26 moves to the bottom position when the elastic membrane 22 is deformed to a specified size within a specified time. The temperature sensor 26 controls the winding unit. When the temperature sensor 26 moves to contact the elastic membrane 22, the temperature of the temperature sensor 26 will drop sharply because the elastic membrane 22 contains condensate. This indicates that the content of condensed water has reached the required condensation level within the specified time. The power unit includes a power box 27, a power plate 28, a power rod 29, and multiple power springs 30. The power box 27 contains condensate. The power plate 28 is slidably adapted to the power box 27. The power plate 28 is provided with multiple power holes 31. One end of the power rod 29 is fixedly connected to the power plate 28, and the other end of the power rod 29 extends out of the power box 27 and is fixedly connected to the temperature sensor 26. One end of the power spring 30 is fixedly connected to the end of the power plate 28 away from the power rod 29, and the other end is fixedly connected to the inner wall of the corresponding end of the power box 27. The power box 27 is also provided with a reciprocating part for pulling the temperature sensor 26 to the initial position. The reciprocating part includes a reciprocating electric push rod and an electromagnet. The electromagnet is used to attract the power rod 29, and the reciprocating electric push rod controls the movement of the electromagnet.

[0040] The elastic membrane 22 is pulled to the lower opening of the condenser 21, and the elastic membrane 22 is in close contact with the opening of the condenser 21. As condensate drips into the condenser 21, the elastic membrane 22 is continuously stretched under the gravity of the condensate, and its length gradually increases until it moves to the same horizontal plane as the temperature sensor 26, that is, the temperature sensor 26 is initially located above the temperature sensor 26. At the same time, the electromagnet separates from the power rod 29. Under the elastic force of the power spring 30 returning to its original shape, the power rod 29 drives the temperature sensor 26 to move towards the elastic membrane 22. However, the water flows in the opposite direction after passing through the power hole 31. At this time, the water exerts resistance on the power plate 28, thus reducing the movement speed of the power plate 28, thereby achieving the effect of controlling the time. If the temperature sensor 26 and the power rod 29 contact the elastic membrane 22 when they move to the designated position, it proves that the humidity in the environment of the outer cover 1 still needs to be condensed and processed. If the temperature sensor 26 does not contact the elastic membrane 22, the humidity in the environment of the outer cover 1 can be processed by internal circulation. In this embodiment, the judgment between the elastic membrane 22 and the temperature sensor 26 is a quantitative judgment of the humidity. Although the humidity sensor 4 can identify the humidity in the environment of the outer cover 1, it cannot determine which processing method is better.

[0041] The detection unit includes a detection block 32, a contact block 33, absorbent paper 34, test paper 35, and an identification group, all movably disposed within the condensation chamber 12. The detection block has a hollow interior and an opening at one end facing the condensation plate 20. Multiple absorbent papers 34 and test papers 35 are provided. The contact block 33 is located in the middle of the detection block 32, and either the absorbent paper 34 or the test paper 35 passes around the end of the contact block 33, with the end of the contact block 33 located on the outside of the detection block 32. When it is necessary to determine the humidity level midway, the condensate previously condensed on the condensation plate 20 must first be treated before the test paper 35 can be used for detection. The test paper 35 is cobalt chloride test paper 35. This detection is mainly to determine whether a condensation operation is still required.

[0042] The identification group includes a color sensor 36, two traction motors, two traction rollers 38, and multiple traction ropes 37. The traction ropes 37 connect the test paper 35 and the absorbent paper 34. The traction rollers 38 are rotatably mounted within the detection block 32. The traction motors control the rotation of the traction rollers 38. The color sensor 36 is mounted on the detection block 32 and faces the test paper 35. The movement of the detection block 32 vertically toward the condensation plate 20 is also achieved using an electric actuator. In the initial state, with the cooperation of the two traction motors, the traction ropes 37 are positioned against the end of the block 33. When it is necessary to treat the condensate on the condensation plate 20, the absorbent paper 34 is pulled to the position against the block 33, meaning the absorbent paper 34 curls at the end of the block 33. During the process, the condensate on the condensing plate 20 is absorbed. After absorption is complete, the traction rope 37 is pulled back to the initial position. After condensation for a period of time, the test paper 35 is pulled to the end of the abutment block 33. Through the reciprocating motion of the detection block 32, the test paper 35 is pulled to the position of the color sensor 36. If the test paper 35 does not change color, it proves that no condensate is generated on the condensing plate 20. If the test paper 35 changes color, it proves that there is condensate on the condensing plate 20. In this embodiment, the color sensor 36 is electrically connected to the buzzer. After the buzzer sounds an alarm, it proves that there is no condensate on the condensing plate 20. Finally, detection units can be set on both sides of the condensing plate 20, but in order to save costs, this embodiment does not need to set two sets of detection units.

[0043] The adsorption unit includes a water-absorbing component 40 and a humidification port 39. The water-absorbing component 40 is located below the condenser box 21, and the humidification port 39 is located on the bottom wall of the condenser chamber 12 and is also funnel-shaped. The water-absorbing component 40 is located inside the humidification port 39, and its size is smaller than the maximum opening size of the humidification port 39. The humidification port 39 is equipped with a third solenoid valve 41. If the humidity in the environment of the outer casing 1 is too low, static electricity is easily generated, which will also affect the operation of the components. Therefore, water can be adsorbed by the adsorption component, and then the third solenoid valve 41 can be opened by utilizing the addition effect of the temperature control tube 15. Open the second solenoid valve 13 of the regulating chamber 11 near the air inlet 7, close the sealing plate 10, open the second solenoid valve 13 of the regulating chamber and the condensing chamber 12 near the air outlet 8, and at the same time close the second solenoid valve 13 of the condensing chamber 12 near the air inlet 7. The air flows from the regulating chamber 11 and forms hot air after heat transfer with the temperature control tube 15. When the hot air flows towards the condensing box 21, the hot air has the effect of evaporating the water on the adsorption element. Then, along with the hot air, it flows into the environment of the outer cover 1 from the humidification port 39, thereby achieving the effect of humidifying the environment of the outer cover 1.

[0044] The implementation principle of the traveling wave measurement module 3 and the distribution network feeder terminal device containing the traveling wave signal that is measurable in this embodiment of the application is as follows: The fusion technology of traveling wave module and FTU is applicable to distribution networks of various sizes, and has significant advantages, especially in complex environments such as urban power grids and rural power grids. In the event of a fault, this technology can quickly locate the fault point, provide accurate fault information for operation and maintenance personnel, help to quickly restore power supply, and reduce power outage time and losses.

[0045] In the initial state, after the phase change material inside the temperature control tube 15 comes into contact with the corresponding heat-generating component, the phase change material begins to store heat. This heat is then moved into the insulation tube 16 by the temperature control electric actuator 17. During the movement of the temperature control tube 15 within the insulation tube 16, the sealing ring 19 deforms and returns to its original shape. The sealing ring 19 is made of rubber. When the temperature control tube 15 extends out of the insulation tube 16, the sealing ring 19 deforms. And when the temperature control tube 15 enters the insulation tube 16… The sealing ring 19 returns to its original shape and begins to further insulate the inside of the insulation tube 16. The insulation tube 16 is also made of a material with heat insulation properties. When the humidity sensor 4 detects that the humidity value in the environment of the outer cover 1 is slightly higher than the set value, the condensation chamber 12 is closed, the sealing plate 10 is opened, and the temperature control tube 15 is moved into the adjustment chamber 11. The phase change material in the temperature control tube 15 begins to release heat, and the dehumidification efficiency in the environment of the outer cover 1 is greatly accelerated under the heating effect of the temperature control tube 15. The elastic membrane 22 is pulled to the lower opening of the condenser 21, and the elastic membrane 22 is in close contact with the opening of the condenser 21. As condensate drips into the condenser 21, the elastic membrane 22 is continuously stretched under the gravity of the condensate, and its length gradually increases until it moves to the same horizontal plane as the temperature sensor 26, that is, the temperature sensor 26 is initially located above the temperature sensor 26. At the same time, the electromagnet separates from the power rod 29. Under the elastic force of the power spring 30 returning to its original shape, the power rod 29 drives the temperature sensor 26 to move towards the elastic membrane 22. However, the water flows in the opposite direction after passing through the power hole 31. At this time, the water exerts resistance on the power plate 28, thus reducing the movement speed of the power plate 28, thereby achieving the effect of controlling the time. If the temperature sensor 26 and the power rod 29 contact the elastic membrane 22 when they move to the designated position, it proves that the humidity in the environment of the outer cover 1 still needs to be condensed and processed. If the temperature sensor 26 does not contact the elastic membrane 22, the humidity in the environment of the outer cover 1 can be processed by internal circulation. In this embodiment, the judgment between the elastic membrane 22 and the temperature sensor 26 is a quantitative judgment of the humidity. Although the humidity sensor 4 can identify the humidity in the environment of the outer cover 1, it cannot determine which processing method is better. In the initial state, with the cooperation of two traction motors, the traction rope 37 is positioned at the end of the block 33. When it is necessary to treat the condensate on the condensing plate 20, the absorbent paper 34 is pulled to the position of the block 33, that is, the absorbent paper 34 curls at the end of the block 33. During the movement of the absorbent paper 34, it absorbs the condensate on the condensing plate 20. After the absorption is completed, the traction rope 37 is pulled back to the initial position. After a period of condensation, the test paper 35 is pulled to the end of the block 33. Through the reciprocating motion of the detection block 32, the test paper 35 is pulled to the position of the color sensor 36. If the test paper 35 does not change color, it proves that no condensate has been generated on the condensing plate 20. If the test paper 35 changes color, it proves that there is condensate on the condensing plate 20.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A traveling wave measurement module (3) and a distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: It includes an outer casing (1), an FTU module (2), and a traveling wave measurement module (3). The signal output terminal of the traveling wave measurement module (3) is electrically connected to the signal input terminal of the FTU module (2). The traveling wave measurement module (3) is built into the FTU module (2). The traveling wave measurement module (3) includes: a Rogowski coil (310), a capacitive voltage divider sensor (320), a housing (330), an analog board (340), a DTU board (350), and a power supply module (360); The Rogowski coil (310) and the capacitive voltage divider sensor (320) are respectively mounted on the housing (330), and the Rogowski coil (310) and the capacitive voltage divider sensor (320) are respectively electrically connected to the analog board (340); The Rogowski coil (310) and the capacitive voltage divider sensor (320) are electrically connected to the analog board (340) via coaxial cables, respectively. The analog board (340) has a first-stage amplifier circuit, a filter circuit, a second-stage amplifier circuit, and a phase-shifting circuit. The first-stage amplifier circuit is electrically connected to the filter circuit and the second-stage amplifier circuit, respectively. The filter circuit and the second-stage amplifier circuit are electrically connected to the phase-shifting circuit, respectively. The Rogowski coil (310) and the capacitive voltage divider sensor (320) are electrically connected to the first-stage amplifier circuit, respectively. The simulation board (340) is electrically connected to the DTU board (350); the simulation board (340) is electrically connected to the power module (360); the power module (360) includes: a power management module and a battery electrically connected to the power management module; It also includes a shielding layer disposed on the outer wall of the outer cover (1); It also includes a control mechanism for controlling the humidity inside the outer cover (1), the control mechanism including a humidity sensor (4), a control box (5), an adjustment component for reducing humidity through internal circulation, a condensation component for reducing humidity inside the outer cover (1) through condensation, and a processing component for selecting the humidity processing method; The outer cover (1) is provided with an air outlet plate (6), and a sealing plate (10) is movably provided on the air outlet plate (6). The control box (5) is provided with an air inlet (7) and an air outlet (8). A first solenoid valve (9) is movably provided at both the air inlet (7) and the air outlet (8) of the control box (5). The humidity sensor (4) is provided on the inner wall of the outer cover (1), and the air outlet (8) is connected to the air outlet plate (6).

2. The traveling wave measurement module (3) according to claim 1 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The control box (5) also includes an adjustment chamber (11) and a condensation chamber (12). Both ends of the adjustment chamber (11) and the condensation chamber (12) are respectively connected to the air inlet (7) and the air outlet (8); both ends of the adjustment chamber (11) and the condensation chamber (12) are provided with second solenoid valves (13). The regulating component includes a fan (14) and a temperature control unit. The fan (14) is located at the air inlet (7), and the temperature control unit is located inside the regulating cavity (11).

3. The traveling wave measurement module (3) according to claim 2 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The temperature control unit includes a temperature control tube (15), a heat preservation tube (16), and a temperature control electric actuator (17) for realizing the reciprocating motion of the temperature control tube (15) in the adjustment cavity (11). The adjustment cavity (11) is provided with a temperature control hole (18). The temperature control tube (15) is filled with a phase change material. The heat preservation tube (16) is fixed at the opening of the temperature control hole (18). After the temperature control tube (15) extends out of the heat preservation tube (16), it contacts the FTU module (2). The temperature control tube (15) is initially located inside the heat preservation tube (16). The bottom end of the heat preservation tube (16) is provided with a sealing ring (19). The inner diameter of the sealing ring (19) is smaller than the outer diameter of the temperature control tube (15) when it is initially open.

4. The traveling wave measurement module (3) according to claim 3 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The condensation assembly includes a condensation plate (20) and a condensation box (21). The condensation plate (20) is vertically arranged and located in the condensation cavity (12). The condensation box (21) is located below the condensation plate (20) and in the condensation cavity (12).

5. The traveling wave measurement module (3) according to claim 4 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The processing component includes an elastic membrane (22), a winding part for movably setting the elastic membrane (22) at the bottom of the condenser (21), an adsorption part for adsorbing the condensate, a judgment part for judging the humidity, and a detection part for detecting whether condensate is present. The bottom of the condenser (21) is open and the condenser (21) is funnel-shaped. The elastic membrane (22) is in close contact with the opening of the condenser (21).

6. The traveling wave measurement module (3) according to claim 5 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The judgment unit includes a temperature sensor (26) and a power unit. The power unit is used to enable the temperature sensor (26) to move to the bottom position when the elastic membrane (22) is deformed to a specified size within a specified time. The temperature sensor (26) controls the operation of the winding unit.

7. The traveling wave measurement module (3) according to claim 6 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The power unit includes a power box (27), a power plate (28), a power rod (29), and multiple power springs (30). The power box (27) is filled with condensate. The power plate (28) is slidably adapted to the power box (27). The power plate (28) is provided with multiple power holes (31). One end of the power rod (29) is fixedly connected to the power plate (28). The other end of the power rod (29) extends out of the power box (27) and is fixedly connected to the temperature sensor (26). One end of the power spring (30) is fixedly connected to the end of the power plate (28) away from the power rod (29), and the other end is fixedly connected to the inner wall of the corresponding end of the power box (27).

8. The traveling wave measurement module (3) according to claim 5 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The detection unit includes a detection block (32), a contact block (33), absorbent paper (34), test paper (35), and an identification group, which are movably disposed in the condensation chamber (12). The detection block is hollow inside and has an opening at one end facing the condensation plate (20). Multiple absorbent papers (34) and test papers (35) are provided. The contact block (33) is disposed in the middle of the detection block (32). The absorbent paper (34) or the test paper (35) bypasses the end of the contact block (33). The end of the contact block (33) is located outside the detection block (32).

9. The traveling wave measurement module (3) according to claim 8 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The identification group includes a color sensor (36), two traction motors, two traction rollers (38), and multiple traction ropes (37). The traction ropes (37) are used to connect the test paper (35) and the absorbent paper (34). The traction rollers (38) are rotatably disposed within the detection block (32). The traction motors are used to control the rotation of the traction rollers (38). The color sensor (36) is disposed in the detection block (32) and faces the test paper (35).

10. The traveling wave measurement module (3) according to claim 9 and the distribution network feeder terminal device containing the traveling wave signal that can be measured, characterized in that: The adsorption section includes a water-absorbing element (40) and a humidification port (39). The water-absorbing element (40) is located below the condenser box (21). The humidification port (39) is disposed on the bottom wall of the condenser chamber (12) and is also funnel-shaped. The water-absorbing element (40) is disposed inside the humidification port (39). The size of the water-absorbing element (40) is smaller than the maximum opening size of the humidification port (39). The humidification port (39) is provided with a third solenoid valve (41).

Images