A box-type substation partial discharge and environment comprehensive monitoring device

Abstract

The application belongs to the technical field of online monitoring of power equipment, and provides a box-type substation partial discharge and environment comprehensive monitoring device, which comprises an upper base, the top of which is provided with a bearing frame mechanism, the bearing frame mechanism is sequentially provided with a partial discharge monitoring assembly, an environment monitoring assembly and a signal processing module from top to bottom, and the top of the upper base is detachably connected with a protective shell, the partial discharge monitoring assembly, the environment monitoring assembly and the signal processing module are arranged in the protective shell; a lower base is arranged in the substation, the upper base is rotatably connected to the lower base, an angle adjusting assembly is arranged between the upper base and the lower base, and a lead assembly is arranged between the upper base and the lower base, which is used for leading out the signal line of the signal processing module from the upper base. The application modularly integrates multiple types of sensor modules on a horizontally rotatable base, can change the monitoring direction, and solves the problems of fixed monitoring angle and messy wiring of the separated sensor.

Description

Technical Field

[0001] This invention belongs to the field of online monitoring technology for power equipment, and particularly relates to a comprehensive monitoring device for partial discharge and environment of a prefabricated substation. Background Technology

[0002] Prefabricated substations are critical nodes in power distribution networks, and the long-term reliable operation of their internal electrical equipment (such as transformers and high-voltage switchgear) is of paramount importance. Partial discharge is a major early symptom of insulation faults, while environmental parameters inside the substation, such as temperature, humidity, SF6 gas concentration, and condensation, accelerate insulation degradation and affect equipment lifespan. Therefore, real-time online monitoring of partial discharge and key environmental parameters is an effective means of achieving condition-based maintenance and preventing faults.

[0003] In existing technologies, discrete sensors are typically used for monitoring: UHF sensors and ultrasonic sensors are installed at different locations inside the transformer substation to monitor partial discharge, while temperature and humidity sensors, gas sensors, etc., are also installed separately. This distributed arrangement has several inherent drawbacks: First, each sensor requires independent positioning, drilling, wiring, and fixing, resulting in a large amount of construction work and causing repeated damage to the integrity and sealing of the transformer substation casing; second, the monitoring angle of the sensors is fixed, resulting in poor adaptability. Once installed, their orientation and monitoring range are fixed, which may lead to monitoring blind spots for transformer substations with complex internal structures or variable power supply locations, affecting the validity of the data; third, with sensors scattered in various locations, daily inspections, fault diagnosis, or periodic calibrations require individual operation, which is time-consuming, costly, and may be inconvenient to operate due to limited space; finally, multiple independent signal lines and power lines are intertwined inside the transformer substation, which not only affects aesthetics but also increases the risk of line wear, poor contact, and electromagnetic interference. Summary of the Invention

[0004] The purpose of this invention is to provide a comprehensive monitoring device for partial discharge and environment of prefabricated substations, so as to solve the problems of complex installation, fixed viewing angle, difficult maintenance and poor protection caused by the dispersed arrangement of sensors in existing prefabricated substation monitoring systems.

[0005] To achieve the above objectives, the present invention provides the following solution: a comprehensive monitoring device for partial discharge and environment in a prefabricated substation, comprising: An upper base is provided with a support frame mechanism on its top. A partial discharge monitoring component, an environmental monitoring component, and a signal processing module are arranged sequentially from top to bottom within the support frame mechanism. The partial discharge monitoring component and the environmental monitoring component are electrically connected to the signal processing module. A protective shell is detachably connected to the top of the upper base, and the partial discharge monitoring component, the environmental monitoring component, and the signal processing module are housed within the protective shell. A lower base is installed inside the substation, and an upper base is rotatably connected to the lower base. An angle adjustment assembly is provided between the upper base and the lower base, and a lead wire assembly is provided between the upper base and the lower base. The lead wire assembly is used to lead the signal line of the signal processing module out from the upper base.

[0006] Preferably, the support frame mechanism includes multiple vertically fixed support rods connected to the top of the upper base, and two sets of partitions are detachably connected between the multiple support rods from top to bottom. The partial discharge monitoring component and the environmental monitoring component are respectively placed on the two partitions, and the signal processing module is disposed on the upper base.

[0007] Preferably, the partial discharge monitoring component includes a chamber fixedly connected to the partition plate, an ultrasonic sensor fixedly connected inside the chamber, and an opening on the side wall of the chamber near the protective shell, the opening facing the direction of the discharge source in the substation. It also includes an ultra-high frequency sensor, which is disposed on the upper partition along with the chamber.

[0008] Preferably, the protective shell has two sets of first openings on its side wall, and an ultrasonic wave conducting surface and a shielding mesh are fixedly connected to each of the two first openings. The shielding mesh is arranged corresponding to the ultra-high frequency sensor, and the ultrasonic wave conducting surface is arranged corresponding to the opening on the chamber.

[0009] Preferably, the environmental monitoring component includes a wind box fixedly connected to the lower partition plate, with an air inlet pipe and an air outlet pipe respectively fixedly connected to the two opposite side walls of the wind box, a circulating fan installed in the air inlet pipe, and a temperature and humidity sensor and a gas concentration sensor installed in the wind box.

[0010] Preferably, the inner diameter of the air inlet pipe is larger than the inner diameter of the air outlet pipe.

[0011] Preferably, the protective shell has two sets of second openings on its side wall, and filter membranes are fixedly connected to the two second openings respectively. The two filter membranes are respectively arranged corresponding to the air outlet end of the air outlet pipe and the air inlet end of the air inlet pipe.

[0012] Preferably, the lower base has a vertical opening, the bottom of the upper base is fixedly connected to a sleeve, the sleeve is rotatably connected in the opening, and the angle adjustment component is disposed between the sleeve and the lower base.

[0013] Preferably, the angle adjustment assembly includes a gear ring fixedly sleeved on the sleeve, a motor fixedly connected inside the lower base, and a gear fixedly sleeved on the output shaft of the motor, the gear meshing with the gear ring.

[0014] Preferably, the lead assembly includes a through groove formed at the bottom of the lower base, the through groove penetrating one side wall of the lower base, the two ends of the sleeve being connected to the top of the upper base and the opening respectively, and the through groove being connected to the sleeve through the opening.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: 1. This invention integrates multiple monitoring sensors and processing units into one device, achieving "one-stop" installation, significantly reducing construction work and enclosure openings, and resulting in a neat layout.

[0016] 2. This invention achieves remote electric adjustment of the monitoring direction on the horizontal plane through an innovative angle adjustment component, which can flexibly adapt to the monitoring needs of different internal structures of transformer substations and areas prone to faults, effectively improving monitoring efficiency.

[0017] 3. The layered design of the support frame mechanism in this invention allows components such as partial discharge and environmental monitoring to be independently disassembled and maintained. The protective shell is easy to open, facilitating internal inspection and cleaning.

[0018] 4. The present invention integrates the lead wire assembly with the rotating structure, realizing internal wiring. All cables are led out from the bottom of the fixed base, avoiding the risk of cable entanglement and breakage caused by rotational motion, and improving the long-term reliability of the system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the monitoring device of the present invention; Figure 2 This is another schematic diagram of the monitoring device of the present invention; Figure 3 This is a schematic diagram of the present invention with the protective shell removed; Figure 4 This is a top sectional view of the bellows of the present invention; Figure 5 This is a schematic diagram of the angle adjustment component of the present invention; Figure 6 This is a schematic diagram of the connection structure between the partition and the support rod of the present invention; Figure 7 This is a schematic diagram of the snap-fit ​​component in the first position according to Embodiment 2 of the present invention; Figure 8This is a schematic diagram of the snap-fit ​​component in the second position according to Embodiment 2 of the present invention; The components are as follows: 1. Protective shell; 2. Upper base; 3. Lower base; 4. Shielding mesh; 5. Filter membrane; 6. Ultrasonic transmission surface; 7. Through groove; 8. Opening; 9. Support rod; 10. UHF sensor; 11. Chamber; 12. Opening; 13. Ultrasonic sensor; 14. Bellows; 15. Exhaust pipe; 16. Signal processing module; 17. Inlet pipe; 18. Circulating fan; 19. Temperature and humidity sensor; 20. Gas concentration sensor; 21. Sleeve; 22. Gear ring; 23. Gear; 24. Motor; 25. Partition; 26. Slide groove; 27. Fixing bolt; 28. Threaded hole; 29. ​​Through hole; 30. Slot; 31. Locking tongue; 32. Protrusion; 33. First spring; 34. Push block; 35. Pulling block; 36. Top rod; 37. Second spring; 38. Sliding cavity; 39. Slot; 40. Clearance groove. Detailed Implementation

[0021] 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.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: Reference Figures 1-6 This invention provides a comprehensive monitoring device for partial discharge and environmental conditions in a prefabricated substation, comprising: The upper base 2 has a support frame mechanism on its top. The support frame mechanism has a partial discharge monitoring component, an environmental monitoring component, and a signal processing module 16 arranged sequentially from top to bottom. The partial discharge monitoring component, the environmental monitoring component, and the signal processing module 16 are electrically connected. The top of the upper base 2 is detachably connected to a protective shell 1. The partial discharge monitoring component, the environmental monitoring component, and the signal processing module 16 are arranged inside the protective shell 1. The lower base 3 is located inside the substation. The upper base 2 is rotatably connected to the lower base 3. An angle adjustment assembly is provided between the upper base 2 and the lower base 3. A lead wire assembly is provided between the upper base 2 and the lower base 3. The lead wire assembly is used to lead the signal line of the signal processing module 16 out from the upper base 2.

[0024] The main function of the support frame mechanism is to divide the upper part of the base 2 into working spaces for the partial discharge monitoring component, the environmental monitoring component, and the signal processing module 16, allowing the three parts to operate independently. The main function of the protective shell 1 is to protect the internal monitoring components. The main function of the partial discharge monitoring component is to monitor the presence of partial discharge by monitoring the ultra-high frequency electromagnetic waves and ultrasonic waves generated by partial discharge in the substation. The main function of the environmental monitoring component is to sample the air in the substation and monitor the air temperature, humidity, and SF6 gas concentration. The main function of the signal processing module 16 is to collect the monitoring data from the partial discharge monitoring component and the environmental monitoring component and transmit the data. The main function of the angle adjustment component is to adjust the horizontal angle of the upper base 2 to flexibly adapt to the monitoring needs of different internal structures of the transformer and fault-prone areas, eliminating monitoring blind spots. The main function of the lead wire component is to facilitate internal wiring and centralized cable lead-out from the entire monitoring device. Overall, this invention integrates multiple monitoring sensors and processing units into one device, achieving one-stop installation, significantly reducing construction work and enclosure openings, and resulting in a neat layout.

[0025] The scheme is further optimized. The support frame mechanism includes multiple vertically fixed support rods 9 connected to the top of the upper base 2. Two sets of partitions 25 are detachably connected between the multiple support rods 9 from top to bottom. The partial discharge monitoring component and the environmental monitoring component are respectively placed on the two partitions 25. The signal processing module 16 is set on the upper base 2.

[0026] In this embodiment, the upper base 2 is a rectangular metal plate, and four support rods 9 are vertically welded to its four corners to form the main body of the support frame mechanism.

[0027] like Figure 3 As shown in the figure, in this embodiment, the support rod 9 is provided with a vertical groove 26. The grooves 26 on the four sets of support rods 9 are respectively provided with corresponding corners of the partition 25. The side wall of the partition 25 is provided with a threaded hole 28, and the support rod 9 is provided with a through hole 29. When the partition 25 is lowered into place along the groove 26, the threaded hole 28 is aligned with the through hole 29. Then, the fixing bolt 27 is used to pass through the through hole 29 and tighten it in the threaded hole 28 to fix the partition 25.

[0028] The design has been further optimized. The protective shell 1 is made of transparent engineering plastic and can be fixedly connected to the upper base 2 by setting a buckle.

[0029] In this embodiment, the buckle is a conventional structure in the field. The appropriate buckle form can be selected according to the actual use requirements, so the structure and working principle of the buckle will not be described in detail.

[0030] Further optimization of the scheme: the partial discharge monitoring component includes a chamber 11 fixedly connected to the partition 25, an ultrasonic sensor 13 fixedly connected inside the chamber 11, and an opening 12 on the side wall of the chamber 11 near the protective shell, the opening 12 facing the direction of the discharge power source in the substation. It also includes an ultra-high frequency sensor 10, which is mounted on the upper partition 25 along with the chamber 11.

[0031] In this embodiment, the UHF sensor 10 and the ultrasonic sensor 13 are arranged on the same plane. The ultrasonic sensor 13 is placed in the chamber 11, and the UHF sensor 10 is installed next to the chamber 11. The two are spatially independent to reduce mutual interference. The chamber 11 also provides an acoustic cavity for the ultrasonic sensor 13. Their relative positions can be optimized and determined according to the geometric center of typical power sources inside the transformer, such as bushings and cable heads, to form a joint positioning sensing surface.

[0032] The design was further optimized by setting opening 12 as a horn-shaped opening for directional reception of sound wave signals.

[0033] To further optimize the design, two sets of first openings are provided on the side wall of the protective shell 1. An ultrasonic transmission surface 6 and a shielding mesh 4 are fixedly connected to the two first openings respectively. The shielding mesh 4 is set in correspondence with the ultra-high frequency sensor 10, and the ultrasonic transmission surface 6 is set in correspondence with the opening on the chamber 11.

[0034] In this embodiment, the shielding mesh 4 is a metal wire shielding mesh, the mesh size of which has been optimized through electromagnetic simulation. It faces the ultra-high frequency sensor 10 to ensure that it can effectively shield external low-frequency interference while allowing ultra-high frequency electromagnetic waves generated by partial discharge inside the substation to effectively penetrate. The ultrasonic wave conducting surface 6 is made of rubber material with matching acoustic impedance and faces the opening 12 of the cavity 11 to ensure that the ultrasonic sensor can have good acoustic coupling with the cavity 11, while ensuring the airtightness of the protective shell 1.

[0035] Further optimization of the scheme: the environmental monitoring component includes a bellows 14 fixedly connected to the lower partition 25. An air inlet pipe 17 and an air outlet pipe 15 are fixedly connected to the two opposite side walls of the bellows 14, respectively. A circulating fan 18 is installed inside the air inlet pipe 17, and a temperature and humidity sensor 19 and a gas concentration sensor 20 are installed inside the bellows 14.

[0036] In this embodiment, the circulating fan 18 can be a miniature circulating fan, used to draw air from inside the substation into the air box 14 through the air intake pipe 17, thereby achieving active sampling of the air inside the substation and ensuring the accuracy and real-time nature of environmental parameter measurements. The gas concentration sensor 20 is an SF6 gas concentration sensor, used in conjunction with the temperature and humidity sensor 19 to monitor the temperature, humidity, and SF6 concentration of the air inside the substation.

[0037] The design was further optimized so that the inner diameter of the intake pipe 17 is larger than the inner diameter of the exhaust pipe 15.

[0038] In this embodiment, the inner diameter of the air inlet pipe 17 can be set to 1.5 times the inner diameter of the air outlet pipe 15. By setting the inner diameter of the air outlet pipe 15 to be smaller than the inner diameter of the air inlet pipe 17, the resistance of air exiting the bellows 14 can be increased, and the residence time of air in the bellows 14 can be increased, which is beneficial for collecting temperature, humidity and SF6 concentration in the air.

[0039] To further optimize the design, two sets of second openings are provided on the side wall of the protective shell 1. Filter membranes 5 are fixedly connected to the two second openings respectively. The two filter membranes 5 are respectively set to correspond to the air outlet end of the air outlet pipe 15 and the air inlet end of the air inlet pipe 17.

[0040] In this embodiment, annular sealing rings are fitted at the ends of the air inlet pipe 17 and the air outlet pipe 15 away from the air box 14, and the lengths of the air inlet pipe 17 and the air outlet pipe 15 extending out of the air box 14 are set to ensure that when the protective shell 1 is fastened to the upper base 2, the sealing rings on the air inlet pipe 17 and the air outlet pipe 15 can fit against the inner wall of the protective shell 1. At the same time, the second openings on the protective shell 1 corresponding to the positions of the air inlet pipe 17 and the air outlet pipe 15 are covered with microporous dustproof filter membranes to ensure air circulation while preventing dust and condensation from directly adhering to the sensor sensitive element.

[0041] To further optimize the solution, in this embodiment, the signal processing module 16 integrates a preamplifier, an analog-to-digital converter, a microprocessor, and a wireless communication unit. The signal processing module 16 is electrically connected to the upper-layer ultra-high frequency sensor 10, ultrasonic sensor 13, temperature and humidity sensor 19, gas concentration sensor 20, circulating fan 18, and motor 24 through internal flexible circuitry.

[0042] The design is further optimized by providing a vertical opening 8 on the lower base 3 and a sleeve 21 fixedly connected to the bottom of the upper base 2. The sleeve 21 is rotatably connected inside the opening 8, and the angle adjustment component is set between the sleeve 21 and the lower base 3.

[0043] The design is further optimized. The angle adjustment component includes a gear ring 22 fixedly sleeved on the sleeve 21, a motor 24 fixedly connected inside the lower base 3, and a gear 23 fixedly sleeved on the output shaft of the motor 24. The gear 23 meshes with the gear ring 22.

[0044] In this embodiment, through remote communication with the signal processing module 16, the signal processing module 16 controls the forward and reverse rotation of the motor 24, which drives the gear 23 to drive the sleeve 21 to rotate within the opening 8 via the gear ring 22, and finally drives the entire upper base 2 to rotate at a precise angle, so that the ultrasonic wave transmission surface and the shielding mesh 4 window can be precisely aligned with the electrical equipment areas that need to be monitored, such as cable terminals and sleeves.

[0045] In a further optimized embodiment, the signal processing module 16 controls the forward and reverse rotation angles of the motor 24 to allow the upper base 2 to rotate relative to the lower base 3 within a range of ±180°, thereby preventing the cables between the signal processing module 16 and the motor 24 from becoming entangled.

[0046] Further optimization of the scheme: the lead wire assembly includes a through groove 7 opened at the bottom of the lower base 3, the through groove 7 penetrates one side wall of the lower base 3, the two ends of the sleeve 21 are respectively connected to the top of the upper base 2 and the opening 8, and the through groove 7 is connected to the sleeve 21 through the opening 8.

[0047] In this embodiment, the lead assembly is used to manage cables. The sleeve 21 is a hollow tube, with its upper end connected to the top of the upper base 2, allowing the wiring harness in the signal processing module 16 to pass through it. Its lower end connects to the opening 8 of the lower base 3. A radial through-slot 7 is provided on one side of the bottom plate of the lower base 3, and this through-slot 7 connects to the opening 8. During installation, all sensor cables converge to the signal processing module 16. The power and communication lines of the signal processing module 16 are combined into a hybrid cable. This hybrid cable passes sequentially through the interior of the upper base 2, the sleeve 21, and the opening 8 of the lower base 3, finally exiting from the through-slot 7 and connecting to a pre-set cable tray or interface inside the transformer substation. This design ensures that regardless of how the upper base 2 rotates, the internal cables always move near the central axis and will not become tangled.

[0048] The design has been further optimized by pre-setting standardized mounting holes on the lower base 3 to accommodate bolt installations inside different models of prefabricated substations.

[0049] The working process of this invention is as follows: The lower base 3 is fixedly installed at a pre-set monitoring point inside the substation, such as near a common partition or main equipment. By controlling the motor 24, all sensor components on the upper base 2 and its top partition 25 are rotated as a whole, ensuring that the ultrasonic transmission surface 6 and the shielding mesh 4 are precisely aligned with the electrical equipment areas requiring focused monitoring, such as cable terminals and conduits. After the monitoring device of this invention is powered on, the circulating fan 18 starts, drawing air from the substation into the air box 14, which then flows through the temperature and humidity sensor 19 and the gas concentration sensor 20 before being discharged, achieving dynamic sampling and monitoring of environmental parameters. The ultra-high frequency sensor 10 and the ultrasonic sensor 13 synchronously collect electromagnetic and acoustic signals generated by partial discharge. All data is preprocessed and fused by the signal processing module 16, and then transmitted to the backend system via cables output from the lead assembly.

[0050] When the monitoring device requires maintenance or a sensor needs repair or replacement, simply open the clips on the protective shell 1, remove the protective shell 1, then unscrew the fixing bolts 27 and remove the partition 25 to remove the entire monitoring component for replacement or calibration. After maintenance, retighten the fixing bolts 27 onto the support rod 9 and partition 25, replace the protective shell 1, and fasten the clips. The maintenance process is simple and quick, and does not affect other parts of the device.

[0051] Example 2: The only difference between this embodiment and Embodiment 1 is that a snap-fit ​​assembly is provided between the support rod 9 and the partition plate 25. The snap-fit ​​assembly includes: A locking tongue 31 is horizontally slidably connected within the support rod 9. The top and bottom of the end of the locking tongue 31 near the partition 25 are respectively provided with wedge-shaped surfaces. The end of the locking tongue 31 away from the partition 25 is horizontally fixedly connected to one end of a top rod 36. The other end of the top rod 36 passes through the support rod 9. A second spring 37 abuts against the end of the locking tongue 31 away from the partition 25 and the support rod 9. A slot 30 is provided on the side wall of the partition 25 near the support rod 9. The locking tongue 31 is correspondingly arranged with the slot 30. A limiting member is provided inside the support rod 9 to limit the position of the locking tongue 31. When the limiting member is in the first position relative to the locking tongue 31, only the wedge-shaped surface of the locking tongue 31 is inserted into the slot 30. When the limiting member is in the second position relative to the locking tongue 31, the entire locking tongue 31 is inserted into the slot 30.

[0052] The limiting component includes a sliding cavity 38 formed in the support rod 9. A push block 34 is vertically slidably connected in the sliding cavity 38. A first spring 33 abuts between the bottom of the push block 34 and the sliding cavity 38. A protrusion 32 is fixedly connected to the top of the push block 34. A slot 39 is formed on the side of the locking tongue 31 near the push block 34 along the sliding direction of the locking tongue 31. When in the first position, the protrusion 32 is located in the slot 39 and abuts against the side of the slot 39 away from the partition 25. When in the second position, the protrusion 32 abuts against the end of the locking tongue 31 away from the partition 25.

[0053] A clearance groove 40 is provided on the side wall of the support rod 9 away from the partition 25. A lever 35 is fixedly connected to the push block 34. The lever 35 is located in the clearance groove 40. When in the second position, the end of the push rod 36 away from the partition 25 is located in the clearance groove 40.

[0054] like Figure 7As shown, the limiting member is in the first position at this time, the protrusion 32 is engaged with the left end of the slot 39, and the locking tongue 31 cannot move to the right due to the obstruction of the protrusion 32. When it is necessary to place the lower partition 25, when the partition 25 passes the upper locking tongue 31 of the support rod 9, it will first abut against the upper wedge surface and push the locking tongue 31 inward. Continuing to press down the partition 25, the locking tongue 31 will move inward under the action of the wedge surface, allowing the partition 25 to pass smoothly and then move to the lower locking tongue 31, and place the locking tongue 31 in the slot 30. At this time, there is no load on the partition 25, and the partition 25 can be fixed in a fixed state under the action of the locking tongue wedge surface and the second spring 37.

[0055] like Figure 8 As shown, after the partition 25 is installed in place, the lever 35 is pushed down to disengage the protrusion 32 from the slot 39. At this time, the locking tongue 31 moves to the right under the action of the second spring 37, so that the whole is inserted into the slot 30. Then the lever 35 is released, and the push block 34 moves up, so that the protrusion 32 abuts against the left side of the locking tongue 31, so as to prevent the locking tongue 31 from moving to the left and causing the fixing function to fail.

[0056] When it is necessary to remove the partition 25, simply pull down the lever 34 and then pull the push rod 36 outward to make the protrusion 32 re-lock in the slot 39. Under the action of the wedge-shaped surface at the bottom of the locking tongue 31, the partition 25 can be removed.

[0057] The main function of the clearance groove 40 is to keep the top rod 36 and the toggle block 35 within the envelope of the support rod 9, so as to avoid affecting the installation of the protective shell 1.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "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, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A comprehensive monitoring device for partial discharge and environmental conditions in a prefabricated substation, characterized in that, include: The upper base (2) is provided with a support frame mechanism on its top. The support frame mechanism is provided with a partial discharge monitoring component, an environmental monitoring component and a signal processing module (16) arranged sequentially from top to bottom. The partial discharge monitoring component and the environmental monitoring component are electrically connected to the signal processing module (16). The upper base (2) is detachably connected with a protective shell (1). The partial discharge monitoring component, the environmental monitoring component and the signal processing module (16) are arranged inside the protective shell (1). The lower base (3) is installed in the substation. The upper base (2) is rotatably connected to the lower base (3). An angle adjustment assembly is provided between the upper base (2) and the lower base (3). A lead wire assembly is provided between the upper base (2) and the lower base (3). The lead wire assembly is used to lead the signal line of the signal processing module (16) out from the upper base (2).

2. The partial discharge and environmental integrated monitoring device for a prefabricated substation according to claim 1, characterized in that: The support frame mechanism includes multiple vertically fixed support rods (9) connected to the top of the upper base (2). Two sets of partitions (25) are detachably connected between the multiple support rods (9) from top to bottom. The partial discharge monitoring component and the environmental monitoring component are respectively placed on the two partitions (25). The signal processing module (16) is set on the upper base (2).

3. The integrated monitoring device for partial discharge and environment of a prefabricated substation according to claim 2, characterized in that: The partial discharge monitoring assembly includes a chamber (11) fixedly connected to the partition (25), an ultrasonic sensor (13) fixedly connected inside the chamber (11), and an opening (12) on the side wall of the chamber (11) near the protective shell, the opening (12) facing the discharge power source direction in the substation. It also includes an ultra-high frequency sensor (10), which is disposed on the upper partition (25) along with the chamber (11).

4. The partial discharge and environmental integrated monitoring device for a prefabricated substation according to claim 3, characterized in that: The protective shell (1) has two sets of first openings on its side wall. An ultrasonic transmission surface (6) and a shielding mesh (4) are fixedly connected in the two first openings respectively. The shielding mesh (4) is corresponding to the ultra-high frequency sensor (10), and the ultrasonic transmission surface (6) is corresponding to the opening on the chamber (11).

5. The integrated monitoring device for partial discharge and environment of a prefabricated substation according to claim 2, characterized in that: The environmental monitoring component includes a bellows (14) fixedly connected to the partition (25) on the lower layer. An air inlet pipe (17) and an air outlet pipe (15) are fixedly connected to the two opposite side walls of the bellows (14). A circulating fan (18) is installed in the air inlet pipe (17). A temperature and humidity sensor (19) and a gas concentration sensor (20) are installed in the bellows (14).

6. The integrated monitoring device for partial discharge and environment of a prefabricated substation according to claim 5, characterized in that: The inner diameter of the air inlet pipe (17) is larger than the inner diameter of the air outlet pipe (15).

7. The integrated monitoring device for partial discharge and environment of a prefabricated substation according to claim 5, characterized in that: The protective shell (1) has two sets of second ports on its side wall. Filter membranes (5) are fixedly connected in the two second ports respectively. The two filter membranes (5) are respectively set to correspond to the air outlet end of the air outlet pipe (15) and the air inlet end of the air inlet pipe (17).

8. The integrated monitoring device for partial discharge and environment of a prefabricated substation according to claim 1, characterized in that: The lower base (3) has a vertical opening (8), and the bottom of the upper base (2) is fixedly connected to a sleeve (21). The sleeve (21) is rotatably connected in the opening (8), and the angle adjustment component is set between the sleeve (21) and the lower base (3).

9. A comprehensive monitoring device for partial discharge and environment of a prefabricated substation according to claim 8, characterized in that: The angle adjustment assembly includes a gear ring (22) fixedly sleeved on the sleeve (21), a motor (24) fixedly connected inside the lower base (3), and a gear (23) fixedly sleeved on the output shaft of the motor (24), the gear (23) meshing with the gear ring (22).

10. A comprehensive monitoring device for partial discharge and environment of a prefabricated substation according to claim 8, characterized in that: The lead assembly includes a through groove (7) formed at the bottom of the lower base (3), the through groove (7) penetrating one side wall of the lower base (3), the two ends of the sleeve (21) being connected to the top of the upper base (2) and the opening (8) respectively, and the through groove (7) being connected to the sleeve (21) through the opening (8).

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