Intelligent 10KV ring main unit with online monitoring function

Abstract

The invention relates to the technical field of ring main units, and discloses an intelligent 10KV ring main unit with an on-line monitoring function, which comprises a primary cabinet and secondary cabinets, a temperature and humidity sensor and an electrical fault monitor are respectively arranged in each secondary cabinet, the interior of the primary cabinet is divided into a plurality of electrical rooms by a plurality of vertical partition plates, each secondary cabinet is respectively arranged in different electrical rooms, and each secondary cabinet is provided with an on-line monitoring function. The top and the bottom of each electrical room are respectively provided with a radiator and an air inlet; a bottom plate of the mother cabinet is provided with a combined pipe, the combined pipe penetrates through each vertical partition plate, the combined pipe is provided with a corresponding combined pipe vent hole in the corresponding electrical room, and each combined pipe vent hole is provided with an intelligent communication mechanism; in a normal state, different electrical rooms do not interfere with one another under the action of the vertical partition plates, the heat dissipation efficiency of different sub-cabinets is controlled by controlling the power of the heat dissipater, and the vertical partition plates can also be used for supporting the cabinet doors; when abnormity occurs, different electrical rooms can be communicated by controlling the intelligent communication mechanism.

Description

A smart 10kV ring main unit with online monitoring function Technical Field

[0001] This invention relates to the field of ring main unit technology, specifically to an intelligent 10KV ring main unit with online monitoring function. Background Technology

[0002] 10kV ring main units, as core electrical equipment in power distribution networks, are widely used in residential communities, industrial parks, municipal engineering projects, and other locations. Their operational stability directly affects the reliability of power supply in the distribution network. With the increasing demand for intelligent upgrades to power distribution networks, ring main units with online monitoring and intelligent control functions have become an industry trend.

[0003] In existing 10kV ring main units, the main cabinet typically has an integrated chamber structure with no independent isolation design for the individual sub-cabinets, leading to severe mutual interference between them during operation. On one hand, electromagnetic radiation from adjacent sub-cabinets can easily interfere with each other, reducing the data acquisition accuracy of monitoring components such as temperature and humidity sensors and electrical fault monitors, making it difficult to accurately detect equipment malfunctions. On the other hand, the integrated chamber can only achieve overall heat dissipation control, failing to adjust the heat dissipation efficiency individually based on the actual operating load of each sub-cabinet. Some sub-cabinets with higher loads require enhanced heat dissipation, but the overall heat dissipation mode easily leads to energy waste. Simultaneously, some low-load sub-cabinets may experience condensation due to excessive heat dissipation, potentially causing short circuits, component corrosion, and other hazards.

[0004] Meanwhile, the existing ring main unit cabinet doors are mostly supported by a separate support structure set on the frame of the main cabinet. This not only makes the structural design cumbersome and occupies the effective space inside the cabinet, but also has limited support stability. After long-term operation, the cabinet doors are prone to deformation and reduced sealing performance due to vibration and aging, allowing external dust and moisture to enter the cabinet and affecting the service life of the equipment.

[0005] In terms of anomaly handling, existing ring main units lack effective regional connectivity and isolation control mechanisms. When localized overheating or excessive humidity occurs in a certain area, it is impossible to quickly construct a targeted airflow circulation channel, resulting in low cooling or drying efficiency and a tendency for the abnormal state to continue to worsen. Furthermore, when faults such as localized insulation discharge or fuse blowing occur, the lack of precise regional isolation means allows the fault to easily spread to surrounding areas, triggering secondary faults. Moreover, locating the fault area is difficult, hindering rapid response and maintenance.

[0006] Furthermore, existing online monitoring systems for ring main units often suffer from fragmented functionality, poor coordination among the components of the monitoring modules, and a lack of integrated design for core components such as data acquisition units, main controllers, and communication transmission units. This results in high data processing latency, inaccurate command issuance, and difficulty in achieving closed-loop management of the entire process of monitoring, early warning, and coordinated control. At the same time, human-machine interaction is not convenient enough, with most systems only supporting local operation. Remote maintenance and data traceability are difficult, failing to meet the needs of intelligent operation and maintenance management.

[0007] In summary, existing 10kV ring main units suffer from technical defects such as unreasonable structural design, severe operational interference, inaccurate heat dissipation control, weak fault management capabilities, and poor coordination of online monitoring systems. These defects affect the stability of equipment operation, the accuracy of monitoring, and the convenience of operation and maintenance. There is an urgent need for an intelligent 10kV ring main unit with online monitoring capabilities that can solve the above-mentioned technical problems. Summary of the Invention

[0008] (I) Technical Problems Solved In response to the shortcomings of existing technologies, this invention provides an intelligent 10KV ring main unit with online monitoring capabilities. It can achieve independent heat dissipation control and electromagnetic radiation shielding for each sub-cabinet, while ensuring stable support for the cabinet door. Furthermore, it can accurately achieve regional connectivity or isolation in case of abnormalities or faults, thereby improving the stability of equipment operation and the convenience of maintenance. This solves the technical problems of existing 10KV ring main units, such as lack of independent electrical room isolation, inaccurate heat dissipation control, cumbersome cabinet door support structure, and inability to accurately connect and isolate under abnormal or fault conditions.

[0009] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A smart 10KV ring main unit with online monitoring function, comprising a main cabinet and multiple sub-cabinets installed within the main cabinet. Each sub-cabinet is equipped with a temperature and humidity sensor and an electrical fault monitor. The main cabinet is equipped with multiple vertical partitions, which divide the main cabinet into multiple independent electrical rooms. Each sub-cabinet is installed in a different electrical room. The top and bottom of each electrical room are equipped with corresponding radiators and corresponding air inlets. A connecting pipe is installed on the bottom plate of the main cabinet, which passes through each vertical partition. The connecting pipe has corresponding connecting pipe vents in the corresponding electrical room. Each connecting pipe vent is equipped with an intelligent connection mechanism. During normal operation, different electrical rooms do not interfere with each other under the action of the vertical partitions. The heat dissipation efficiency of different sub-cabinets is controlled by controlling the power of the radiators, and the vertical partitions can also be used to support cabinet doors. In case of an abnormality, the intelligent connection mechanism can be used to connect different electrical rooms.

[0010] Preferably, buffer rooms are provided on the side panels on both sides of the main cabinet. The buffer rooms are connected to each electrical room through a connecting pipe. A pressure relief port is provided at the top of the buffer room, and a pressure-sensing pressure relief valve is installed at the pressure relief port. Temperature sensors and pressure sensors are installed in the buffer rooms and connected to an online monitoring module to monitor the temperature and pressure changes in the buffer rooms in real time.

[0011] Preferably, the combined pipe includes a cylindrical pipe body, an arc-shaped plate that rotates around the central axis of the pipe body is provided inside the pipe body, a partition plate is provided on the inner wall of the pipe body corresponding to the position of each vertical partition, a slot is provided on the arc-shaped plate corresponding to the position of each partition plate, each partition plate is inserted into the slot and slides, the cross-sectional size of the partition plate is larger than the cross-sectional size of the arc-shaped plate, a combined pipe vent and a combined pipe drain are respectively provided on the pipe body corresponding to the position of each electrical room, wherein the height of the combined pipe vent is higher than the combined pipe drain, and a cover plate is also provided on the arc-shaped plate, the cover plate is used to cover the combined pipe drain when the arc-shaped plate rotates.

[0012] Preferably, the connecting pipe is installed on the bottom plate of the mother cabinet, and the top of the connecting pipe protrudes upward relative to the bottom plate to prevent external rainwater and other liquids from flowing into the cabinet.

[0013] Preferably, the air inlet at the bottom of the electrical room is a bottom plate ventilation channel set on the bottom plate, the bottom plate ventilation channel is connected to the bottom plate ventilation hole, and the bottom plate ventilation hole runs through the bottom plate.

[0014] Preferably, the three sides of the vertical partition are respectively installed and fixed on the top plate, back plate and side plate of the mother cabinet, and the remaining side of the vertical partition is attached to the cabinet door of the mother cabinet. The side of the vertical partition that is attached to the cabinet door is provided with a sealing strip and a magnetic pad to strengthen the connection with the cabinet door.

[0015] Preferably, the bottom of the buffer chamber is provided with a detachable collection tank for collecting debris such as slag and metal scraps and sewage generated by the fault, so as to avoid the accumulation of debris affecting the buffering effect.

[0016] Preferably, the inner wall of the buffer chamber is provided with a multi-layer metal protective mesh to block splashing component fragments and reduce the impact of fragments on the chamber's sealing structure.

[0017] Preferably, the air inlet of the combined pipe is aligned with the arc surface of the arc-shaped plate to buffer the airflow.

[0018] Preferably, the temperature and humidity sensor and the electrical fault monitor are connected to the online monitoring module.

[0019] (III) Beneficial Effects Compared with the prior art, the present invention provides an intelligent 10KV ring main unit with online monitoring function, which has the following beneficial effects: 1. The intelligent 10KV ring main unit with online monitoring function separates multiple electrical rooms by setting vertical partitions, which can not only control the heat dissipation efficiency of different sub-cabinets individually, but also use the vertical partitions to support the cabinet doors and shield electromagnetic radiation interference; and by setting a connecting pipe to connect different electrical rooms, it can not only control the intelligent connection mechanism of the corresponding connecting pipe vent to open when a local overheating or overhumidification abnormality occurs in a certain electrical room, so that the electrical room and the low temperature or dry electrical room form an airflow circulation channel through the connecting pipe, thereby improving the cooling or drying efficiency, but also close the electrical room in the fault area through the intelligent connection mechanism when a fault abnormality such as local insulation discharge or fuse blowing occurs in a certain electrical room, thereby achieving precise control of the fault area.

[0020] 2. This intelligent 10KV ring main unit with online monitoring function, through the setting of a buffer room, firstly, when the electrical fault monitor detects an abnormal fault such as partial insulation discharge or fuse blowing in a certain electrical room, the intelligent connection mechanism selectively opens / closes. This can prevent the spread of arc and high-temperature gas generated by the fault from other areas by closing the vent of the joint pipe between the faulty electrical room and the unrelated electrical rooms, and can also open the vent of the joint pipe between the faulty electrical room and the buffer room to guide the high-temperature and high-pressure gas generated by the fault to the buffer room through the joint pipe, thereby reducing the pressure in the faulty electrical room. Secondly, the airflow circulation across electrical rooms can quickly reduce the temperature of the fault area, creating a safe environment for subsequent maintenance personnel and solving the defects of existing ring main units where faults are easily spread and maintenance risks are high. Finally, the buffer room can also improve the impact resistance and sealing performance of the main cabinet side wall.

[0021] 3. This intelligent 10KV ring main unit with online monitoring function has an arc-shaped plate installed in the combined pipe. First, through the cooperation of the arc-shaped plate and the partition plate, the sewage from different electrical rooms can be collected independently in the dedicated compartment of the arc-shaped plate, and the sewage is finally collected at the bottom of the buffer room, ensuring the stable operation of the linkage functions such as heat dissipation and fault voltage reduction across electrical rooms. Second, the arc-shaped plate can also buffer and guide the airflow entering from the vent of the combined pipe. Attached Figure Description

[0022] Figure 1 is a front structural diagram of the present invention.

[0023] Figure 2 is a front view of the present invention.

[0024] Figure 3 is an exploded view of the present invention.

[0025] Figure 4 is a schematic diagram of the rear structure of the present invention.

[0026] Figure 5 is a schematic diagram of the structure of the mother cabinet of the present invention.

[0027] Figure 6 is a structural schematic diagram of the mother cabinet of the present invention from another angle.

[0028] Figure 7 is a front view of the mother cabinet of the present invention.

[0029] Figure 8 is a partial structural diagram of the combination of the pipe and the base plate of the present invention.

[0030] Figure 9 is a schematic diagram of the structure of the combined pipe of the present invention, at which time the combined pipe is in a water storage state.

[0031] Figure 10 is a schematic diagram of the structure of the combined pipe of the present invention, at which time the combined pipe is in the drainage state.

[0032] Figure 11 is a structural schematic diagram of the combined pipe of the present invention from another angle, at which point the combined pipe is in the drainage state.

[0033] Figure 12 is a cross-sectional view of the tube body of the combined tube of the present invention.

[0034] Figure 13 is a schematic diagram of the structure of the arc-shaped plate of the present invention.

[0035] In the diagram: 1. Main cabinet; 11. Top panel; 12. Back panel; 13. Side panel; 14. Bottom panel; 141. Bottom panel ventilation channel; 142. Bottom panel ventilation hole; 2. Sub-cabinet; 3. Vertical partition; 4. Electrical room; 5. Connecting pipe; 51. Connecting pipe drain outlet; 52. Connecting pipe vent; 53. Curved plate; 54. Divider plate; 531. Shelter plate; 532. Slot; 6. Radiator; 7. Buffer room. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0038] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Example 1: This example provides an intelligent 10KV ring main unit with online monitoring function, which has the following technical features.

[0041] Please refer to Figure 1-13. A smart 10kV ring main unit with online monitoring function includes a main cabinet 1 and multiple sub-cabinets 2 installed inside the main cabinet 1. Each sub-cabinet 2 is equipped with a temperature and humidity sensor and an electrical fault monitor. The main cabinet 1 is equipped with multiple vertical partitions 3, which divide the main cabinet 1 into multiple independent electrical rooms 4. Each sub-cabinet 2 is installed in a different electrical room 4. Each electrical room 4 has a corresponding radiator 6 at the top and a corresponding air inlet at the bottom. The bottom plate of the main cabinet 1... A connecting pipe 5 is installed on the 14, which passes through each vertical partition 3. The connecting pipe 5 has a corresponding connecting pipe vent 52 in the corresponding electrical room 4. Each connecting pipe vent 52 is equipped with an intelligent connection mechanism. During normal operation, different electrical rooms 4 do not interfere with each other under the action of the vertical partition 3. The heat dissipation efficiency of different sub-cabinets 2 is controlled by controlling the power of the radiator 6. The vertical partition 3 can also be used to support the cabinet door. In case of abnormality, the different electrical rooms 4 can be connected by controlling the intelligent connection mechanism.

[0042] Furthermore, temperature and humidity sensors and electrical fault monitors are connected to the online monitoring module. The online monitoring module includes core components such as a main controller, data acquisition unit, communication transmission unit, and human-machine interaction unit. These components work together: the main controller processes data and issues commands; the data acquisition unit is responsible for collecting signals from multiple sources; the communication transmission unit ensures stable data interaction; and the human-machine interaction unit supports local and remote operation, comprehensively covering the needs of routine monitoring, intelligent linkage, fault early warning, and operation and maintenance management of ring main units.

[0043] Furthermore, the connecting pipe 5 is installed on the bottom plate 14 of the mother cabinet 1, and the top of the connecting pipe 5 protrudes upward relative to the bottom plate 14 to prevent external rainwater and other liquids from flowing into the cabinet.

[0044] Furthermore, the intelligent connection mechanism includes switching components such as electromagnetic control valves and mechanical emergency switches that can control airflow. The two work together, with the electromagnetic control valves enabling automatic intelligent management and the mechanical emergency switches ensuring manual emergency operation, comprehensively covering the airflow interruption needs in both normal operation and emergency failure scenarios.

[0045] Specifically, the electromagnetic control valve is installed on the manifold 5 at the corresponding positions of each electrical room 4, as well as at the connection between the manifold 5 and the branch pipe of the buffer room 7. It is fixed with a flange and is used to automatically control the opening and closing of the airflow channels between each electrical room 4 and between electrical room 4 and buffer room 7. The electromagnetic control valve adopts a normally closed structure to meet the airflow control requirements of the 10KV ring main unit. The valve core is made of corrosion-resistant stainless steel and the sealing surface is equipped with a high-temperature resistant silicone gasket, which can achieve tight closure of the airflow channel, avoid unexpected airflow cross-flow, and ensure the independent operation of electrical room 4 and accurate isolation in case of failure.

[0046] Specifically, the mechanical emergency switch is installed next to the electromagnetic control valve and is bolted to the cabinet bracket. It is mechanically connected to the valve core of the electromagnetic control valve via a connecting rod. It is used to manually control the opening and closing of the airflow channel in emergency situations such as electromagnetic control valve failure or power outage. The mechanical emergency switch is equipped with clear "on / off" markings and a locking device to avoid misoperation and ensure the safety and accuracy of emergency operations.

[0047] Furthermore, the air inlet at the bottom of the electrical room 4 is a bottom plate ventilation channel 141 set on the bottom plate 14. The bottom plate ventilation channel 141 is connected to the bottom plate ventilation hole 142, which runs through the bottom plate 14.

[0048] Further configurations include an electrical fault monitor with a partial discharge detector, a fuse status detector, a fault gas detector, and an overcurrent / overload detector.

[0049] Specifically, the partial discharge detector is installed above the fuse and on both sides of the cable terminal in each sub-cabinet 2. It is fixed by magnetic attraction and equipped with an insulating sleeve to prevent short circuits from contacting electrical components. It is used to detect partial discharge signals caused by aging or damage to the cable terminals, switchgear, etc. in the insulation components of the sub-cabinet 2, and accurately capture insulation hazards.

[0050] Specifically, the fuse status detector is installed inside sub-cabinet 2, on the outside of the fuse base, ≤30mm from the fuse body. It is fixed by a snap-fit ​​method and is compatible with commonly used RN2-10 and XRNT1-10 fuses in 10KV ring main units. It is used to monitor the on / off status of the fuse in real time. By sensing the change in electromagnetic signal when the fuse is on or off, it can accurately identify fuse failure. The response time is ≤10ms, avoiding delays in handling faults such as short circuits and overloads.

[0051] Specifically, the fault gas detector is installed at the top ventilation point of each electrical room 4, 100mm from the top and 150mm from the side of the electrical room 4. It is fixed with a wall-mounted insulating bracket, and the bracket is insulated from the cabinet with an insulation resistance of ≥100MΩ. It is used to detect characteristic decomposition gases such as CO and NO2 generated when electrical faults occur, such as arc discharge and short circuit. When the gas concentration reaches the preset threshold, it triggers an auxiliary warning and links with data from other detectors for verification to reduce the fault misjudgment rate.

[0052] Specifically, the overcurrent / overload detector is installed in the sub-cabinet 2 at the line inlet end near the switch contact. It is installed in series and is compatible with the current specifications of the 10KV ring main unit. It is used to monitor the operating current parameters of the line in the sub-cabinet 2 in real time. When the current exceeds the preset threshold, it can be remotely adjusted through the online monitoring module, and an overcurrent or overload fault warning is immediately triggered to avoid equipment damage caused by abnormal current.

[0053] Furthermore, the temperature sensors are installed using a dual-point layout. The core monitoring points are installed on the surfaces of fuses, switch contacts, and cable terminals of the core electrical components in each sub-cabinet 2. These are mounted using a high-temperature resistant adhesive method with thermally conductive silicone pads on the adhesive surface, maintaining a ≤1mm gap from the component surface. This is used to monitor the operating temperature of the core electrical components in real time, detecting localized abnormal high temperatures caused by component overload, poor contact, insulation aging, etc. The auxiliary monitoring points are installed in the middle of the inner wall of each electrical compartment 4, 300mm from the top of the compartment 4 and 200mm away from the air outlet of the radiator 6. These are fixed using wall-mounted insulated brackets with an insulation resistance ≥100MΩ between the brackets and the cabinet. This is used to collect the overall ambient temperature of the electrical compartment 4, preventing equipment failures caused by excessively high ambient temperatures or large temperature differences. The temperature sensors are PT100 platinum resistance type, with a temperature range of -40℃ to +120℃, a detection accuracy of ±0.2℃, a response time ≤500ms, and an IP54 protection rating, capable of withstanding the harsh operating environment inside the ring main unit.

[0054] Furthermore, the humidity sensors are installed in a layered layout. The core monitoring point is installed inside each sub-cabinet 2, on the rear side, away from the core heat-generating components, 200mm from the bottom of the sub-cabinet 2, and fixed with a snap-on insulating bracket. This is used to accurately collect the humidity inside the sub-cabinet 2, detect potential condensation, and prevent short circuits and component corrosion caused by condensation. The auxiliary monitoring points are installed on the lower part of the inner wall of each electrical room 4, 300mm from the bottom plate of the main cabinet 1 and 500mm away from the air inlet, and in the middle of the inner wall of the buffer room 7. Both electrical room 4 and buffer room 7 are wall-mounted, and the bracket surface is sprayed with an anti-corrosion coating. This is used to collect overall humidity data for the area, providing a basis for the drainage linkage of the combined pipe 5 and the operation and adjustment of the radiator 6. The humidity sensor is a capacitive type, with a humidity measurement range of 0~100%RH, a detection accuracy of ±2%RH, a response time of ≤1s, a condensation alarm function, and an IP55 protection rating, which can effectively resist moisture and dust interference.

[0055] Furthermore, the three sides of the vertical partition 3 are respectively installed and fixed on the top plate 11, back plate 12 and side plate 13 of the mother cabinet 1, and the remaining side of the vertical partition 3 is attached to the cabinet door of the mother cabinet 1.

[0056] Furthermore, the vertical partition 3 has a sealing strip and a magnetic pad on the side that is used to fit the cabinet door, which is used to strengthen the connection with the cabinet door.

[0057] Furthermore, the radiator 6 is installed and fixed on the top plate 11 at the top of the mother cabinet 1.

[0058] Furthermore, the radiator 6 includes a main radiator and an auxiliary radiator, which work together to fully cover the heat dissipation needs of the core electrical components, sub-cabinet 2 and electrical room 4, and adapt to heat dissipation management under different load and fault scenarios.

[0059] Specifically, the main radiator is installed on the top of each electrical room 4, corresponding to the center of electrical room 4, 20mm away from the inner wall of the top of electrical room 4. It is fixed with embedded bolts and precisely aligned with the ventilation opening on the top of electrical room 4. The size of the ventilation opening matches the air outlet of the radiator 6. It is used for the main heat dissipation of core electrical components during operation and failure. The main radiator adopts a forced air cooling structure, equipped with copper heat dissipation fins and a silent axial flow fan. It is suitable for the heat dissipation requirements of the 10KV ring main unit's common load. It can quickly reduce the overall ambient temperature of electrical room 4 and the residual heat of core components, ensuring that the components operate within the rated temperature range.

[0060] Specifically, the auxiliary heat sink is installed inside the rear of each sub-cabinet 2, close to the core heat-generating components such as fuses and switch contacts, 100mm away from the components and 300mm away from the bottom of the sub-cabinet 2. It is fixed with a snap-on insulating bracket with an insulation resistance of ≥100MΩ, and is used for localized and precise heat dissipation of the core components of the sub-cabinet 2. The auxiliary heat sink adopts a miniature heat pipe structure, which is small in size, noiseless, and does not require an additional fan drive. It conducts heat through the heat pipe to quickly dissipate the local high temperature of the components, avoiding local overheating that may cause insulation aging, component damage and other failures. It is suitable for the narrow installation space inside the sub-cabinet 2.

[0061] Example 2: This example provides an intelligent 10KV ring main unit with online monitoring function, which, in addition to the technical solutions of the above examples, also has the following technical features.

[0062] Buffer chambers 7 are set on the side panels on both sides of the main cabinet 1. The buffer chambers 7 are connected to each electrical room 4 through a connecting pipe 5. A pressure relief port is set on the top of the buffer chamber 7, and a pressure-sensing pressure relief valve is installed at the pressure relief port. Temperature sensors and pressure sensors are installed in the buffer chamber 7. The temperature sensors and pressure sensors are connected to an online monitoring module to monitor the temperature and pressure changes in the buffer chamber 7 in real time.

[0063] Furthermore, the bottom of the buffer chamber 7 is equipped with a removable collection tank to collect debris such as slag and metal shavings generated by the malfunction, as well as sewage, to prevent debris from accumulating and affecting the buffering effect.

[0064] Furthermore, the inner wall of buffer chamber 7 is equipped with multiple layers of metal protective mesh to block splashing component fragments and reduce the impact of fragments on the cabin's sealing structure.

[0065] Example 3: This example provides an intelligent 10KV ring main unit with online monitoring function, which, in addition to the technical solutions of the above examples, also has the following technical features.

[0066] The connecting pipe 5 includes a cylindrical pipe body, an arc-shaped plate 53 that rotates around the central axis of the pipe body is provided inside the pipe body, a partition plate 54 is provided on the inner wall of the pipe body corresponding to the position of each vertical partition 3, a slot 532 is provided on the arc-shaped plate 53 corresponding to the position of each partition plate 54, each partition plate 54 is inserted into the slot 532 and slides, the cross-sectional size of the partition plate 54 is larger than the cross-sectional size of the arc-shaped plate 53, a connecting pipe vent 52 and a connecting pipe drain 51 are respectively provided on the pipe body corresponding to the position of each electrical room 4, wherein the height of the connecting pipe vent 52 is higher than the connecting pipe drain 51, and a cover plate 531 is also provided on the arc-shaped plate 53, the cover plate 531 is used to cover the connecting pipe drain 51 when the arc-shaped plate 53 rotates.

[0067] Working principle: When the arc plate 53 is in the initial position, the drain outlet 51 of the combined pipe is located inside the arc plate 53. The interior of the arc plate 53 is separated by the partition plate 54. At this time, the sewage in different electrical rooms 4 is collected into different compartments inside the arc plate 53. When draining, the arc plate 53 is controlled to rotate, so that the drain outlet 51 of the combined pipe is covered by the arc plate 53. The arc plate 53 is separated from the partition plate 54, so that the sewage in the arc plate 53 is collected together and flows to the bottom of the buffer room 7 for collection.

[0068] Furthermore, the arc plate 53 has a C-shaped cross-section, a thickness of 2mm, and is made of stainless steel for corrosion and wear resistance. The arc plate 53 is connected to the bearings at both ends of the tube body through a central rotating shaft. The rotating shaft extends to the outside of the tube body and is connected to a small drive motor, which is controlled by an online monitoring module.

[0069] Specifically, a small drive motor is mounted and fixed on one of the side plates 13.

[0070] Furthermore, the air inlet 52 of the combined pipe is aligned with the arc surface of the arc plate 53 to buffer the airflow.

[0071] In summary, this intelligent 10KV ring main unit with online monitoring function separates multiple electrical rooms 4 by setting up vertical partitions 3. This allows for individual control of the heat dissipation efficiency of different sub-cabinets 2, while also using the vertical partitions 3 to support the cabinet doors and shield against electromagnetic radiation interference. Furthermore, by setting up connecting pipes 5 to connect different electrical rooms 4, it can control the intelligent connection mechanism of the corresponding connecting pipe vent 52 to open when a local overheating or overhumidification abnormality occurs in a certain electrical room 4. This allows the electrical room 4 to form an airflow circulation channel with the low-temperature or dry electrical room 4 through the connecting pipe 5, improving cooling or drying efficiency. Additionally, when a fault abnormality such as local insulation discharge or fuse blowing occurs in a certain electrical room 4, the intelligent connection mechanism can close off the electrical room 4 in the fault area, achieving precise control of the fault area.

[0072] This intelligent 10KV ring main unit with online monitoring function, through the setting of buffer room 7, firstly, when the electrical fault monitor detects an abnormal fault such as partial insulation discharge or fuse blowing in a certain electrical room 4, the intelligent connection mechanism selectively opens / closes. This can prevent the spread of arc and high-temperature gas generated by the fault from other areas by closing the joint pipe vent 52 between the faulty electrical room 4 and the unrelated electrical room 4, and at the same time, open the joint pipe vent 52 between the faulty electrical room 4 and the buffer room 7 to allow the high-temperature and high-pressure gas generated by the fault to flow through the joint pipe 5 to the buffer room 7, thereby reducing the pressure in the faulty electrical room 4. Secondly, the airflow circulation across electrical rooms 4 can quickly reduce the temperature of the fault area, creating a safe environment for subsequent maintenance personnel and solving the defects of existing ring main units where faults are easy to spread and maintenance risks are high. Finally, the buffer room 7 can also improve the impact resistance and sealing performance of the side wall of the main cabinet 1.

[0073] This intelligent 10KV ring main unit with online monitoring function has an arc-shaped plate 53 installed in the connecting pipe 5. First, through the cooperation of the arc-shaped plate 53 and the partition plate 54, the sewage from different electrical rooms 4 can be collected independently in the dedicated compartment of the arc-shaped plate 53, and the sewage is finally collected at the bottom of the buffer room 7, ensuring the stable operation of the linkage functions such as heat dissipation and fault voltage reduction across electrical rooms 4. Second, the arc-shaped plate 53 can also buffer and guide the airflow entering from the air vent 52 of the connecting pipe.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart 10KV ring main unit with online monitoring function, comprising a main unit (1) and multiple sub-units (2) disposed within the main unit (1), characterized in that: Each sub-cabinet (2) is equipped with a temperature and humidity sensor and an electrical fault monitor. The main cabinet (1) is equipped with multiple vertical partitions (3), which divide the main cabinet (1) into multiple independent electrical rooms (4). Each sub-cabinet (2) is located in a different electrical room (4). Each electrical room (4) has a corresponding radiator (6) at the top and a corresponding air inlet at the bottom. A connecting pipe (5) is installed on the bottom plate (14) of the main cabinet (1), and the connecting pipe (5) passes through each vertical partition. The vertical partition (3) is provided with a corresponding joint pipe vent (52) in the corresponding electrical room (4). Each joint pipe vent (52) is provided with an intelligent connection mechanism. Under normal operation, the different electrical rooms (4) do not interfere with each other under the action of the vertical partition (3). The heat dissipation efficiency of different sub-cabinets (2) is controlled by controlling the power of the radiator (6). The vertical partition (3) can also be used to support the cabinet door. In case of abnormality, the different electrical rooms (4) can be connected by controlling the intelligent connection mechanism.

2. The intelligent 10KV ring main unit with online monitoring function according to claim 1, characterized in that, Buffer rooms (7) are set on the side panels on both sides of the main cabinet (1). The buffer rooms (7) are connected to each electrical room (4) through a connecting pipe (5). A pressure relief port is set on the top of the buffer room (7), and a pressure-sensing pressure relief valve is configured at the pressure relief port. Temperature sensors and pressure sensors are installed in the buffer room (7). The temperature sensors and pressure sensors are connected to an online monitoring module to monitor the temperature and pressure changes in the buffer room (7) in real time.

3. The intelligent 10KV ring main unit with online monitoring function according to claim 1, characterized in that, The combined pipe (5) includes a cylindrical pipe body, an arc plate (53) that rotates around the central axis of the pipe body is provided inside the pipe body, a partition plate (54) is provided on the inner wall of the pipe body corresponding to the position of each vertical partition (3), a slot (532) is provided on the arc plate (53) corresponding to the position of each partition plate (54), each partition plate (54) is inserted into the slot (532) and slides, the cross-sectional size of the partition plate (54) is larger than the cross-sectional size of the arc plate (53), a combined pipe vent (52) and a combined pipe drain (51) are respectively provided on the pipe body corresponding to the position of each electrical room (4), wherein the height of the combined pipe vent (52) is higher than the combined pipe drain (51), and a shield (531) is also provided on the arc plate (53), the shield (531) is used to cover the combined pipe drain (51) when the arc plate (53) rotates.

4. The intelligent 10KV ring main unit with online monitoring function according to claim 1, characterized in that, The combined pipe (5) is installed on the bottom plate (14) of the mother cabinet (1). The top of the combined pipe (5) protrudes upward relative to the bottom plate (14) to prevent external rainwater and other liquids from flowing into the cabinet.

5. The intelligent 10KV ring main unit with online monitoring function according to claim 1, characterized in that, The air inlet at the bottom of the electrical room (4) is a bottom plate ventilation channel (141) set on the bottom plate (14). The bottom plate ventilation channel (141) is connected to the bottom plate ventilation hole (142), and the bottom plate ventilation hole (142) runs through the bottom plate (14).

6. The intelligent 10KV ring main unit with online monitoring function according to claim 1, characterized in that, The vertical partition (3) is fixed on the top plate (11), back plate (12) and side plate (13) of the mother cabinet (1) on three sides respectively. The remaining side of the vertical partition (3) is attached to the cabinet door of the mother cabinet (1). The side of the vertical partition (3) that is attached to the cabinet door is provided with a sealing strip and a magnetic pad to strengthen the connection with the cabinet door.

7. A smart 10kV ring main unit with online monitoring function according to claim 2, characterized in that, The bottom of the buffer room (7) is equipped with a detachable collection tank for collecting debris such as slag and metal scraps and sewage generated by the fault, so as to avoid the accumulation of debris affecting the buffering effect.

8. A smart 10KV ring main unit with online monitoring function according to claim 2, characterized in that, The buffer chamber (7) has a multi-layer metal protective net in the middle of its inner wall to block flying component fragments and reduce the impact of fragments on the cabin sealing structure.

9. A smart 10kV ring main unit with online monitoring function according to claim 3, characterized in that, The lower part of the combined pipe vent (52) is aligned with the arc surface of the arc plate (53) to buffer the airflow.

10. A smart 10kV ring main unit with online monitoring function according to claim 1, characterized in that, The temperature and humidity sensor and the electrical fault monitor are connected to the online monitoring module.

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