Power grid system operation monitoring equipment

Abstract

The invention relates to the technical field of power equipment, in particular to power grid system operation monitoring equipment, a cabinet comprises a supporting framework, an upper supporting frame and a lower supporting frame, the supporting framework is divided into a low-voltage metering cabinet, a compensation cabinet and a feeder cabinet, a heat dissipation channel is installed on the upper supporting frame so as to carry out unified heat dissipation and detection, and a wire passing channel is installed on the lower supporting frame so as to carry out unified detection. The wire passing channel is of a frame type, so that cables can be better arranged, overall supporting is achieved through the supporting framework, the structural strength is high, the stability in the transportation process can be guaranteed, the positions of the low-voltage metering cabinet, the compensation cabinet and the feeder line cabinet are fixed, and the structure is more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to power grid system operation monitoring equipment. Background Art

[0002] Electricity is the main energy source in modern industrial production. In order to make better use of electricity, power grid system operation monitoring equipment is configured in the factory or workshop, mainly including low-voltage metering cabinets, compensation cabinets and feeder cabinets.

[0003] Among them, the low-voltage metering cabinet measures, monitors and controls the electric energy. It is mainly composed of metering devices, switch devices, circuit breakers, relays, display instruments, power supply parts and control parts; The compensation cabinet is used for reactive power compensation in the power system, monitors the power factor and current and voltage in the system, adjusts the operating status of the compensation equipment according to real-time needs, reduces the loss of power grid lines and equipment, and improves the utilization rate of electric energy; Feeder cabinets are used to connect transmission lines and distribution systems. They are mainly used to receive and distribute electric energy from trunk transmission lines and transmit electric energy to different distribution branch lines. They also have a certain degree of protection and control functions, monitoring system parameters such as current, voltage, power factor, etc. to ensure the normal operation of the power system.

[0004] In industrial production, low-voltage metering cabinets, compensation cabinets and feeder cabinets are indispensable monitoring equipment, which monitor the main parameters of the power grid system such as power, voltage, current, etc., so as to ensure the stable operation of the power grid system. To further ensure safety, the low-voltage metering cabinets, compensation cabinets and feeder cabinets are equipped with ventilation, fire extinguishing and other safety structures. Usually, low-voltage metering cabinets, compensation cabinets and feeder cabinets are designed and manufactured separately, and are fixed to the distribution room for wiring connection to achieve electrical connection between cabinets. Cables are protected and fixed by structures such as bridges and protective tubes. When the cabinets are close to each other, a wire port is opened at the lower end of the cabinet to pass the cable. To protect the cable, a metal sealing strip can be installed at the wire port. Due to their close fit, it is considered to use a unified cabinet to integrate the low-voltage metering cabinet, compensation cabinet and feeder cabinet, which has a good integration effect and can be used in open areas, but it is not well applicable to factory workshops. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a power grid system operation monitoring device which integrates a low-voltage metering cabinet, a compensation cabinet and a feeder cabinet.

[0006] The present invention is achieved through the following technical solutions: a power grid system operation monitoring device, including a cabinet, the cabinet including a supporting frame, the cabinet is divided into a low-voltage metering cabinet, a compensation cabinet and a feeder cabinet, a lower supporting frame is provided at the lower end of the cabinet, a wire passing channel is provided in the lower supporting frame, an upper supporting frame is provided at the upper end of the cabinet, the upper supporting frame is provided with a heat dissipation channel, a sealing plate is provided outside the supporting frame, and a cabinet door is provided on the sealing plate.

[0007] Furthermore, an upper connecting beam is provided at the upper end of the support frame, a lower connecting beam is provided at the lower end of the support frame, a prefabricated isolation plate is provided between the upper connecting beam and the lower connecting beam, the prefabricated isolation plate divides the inner cavity of the support frame into a low-pressure metering cavity, a compensation cavity and a feeder cavity, a component backplane 1 is provided in the low-pressure metering cavity, a component backplane 2 is provided in the compensation cavity, a component backplane 3 is provided in the feeder cavity, and the component backplanes 1, 2 and 3 are all connected to the upper connecting beam and the lower connecting beam.

[0008] Furthermore, a positioning beam is provided at the upper end of the lower support frame, and a wire groove is formed between the positioning beam and the lower connecting beam.

[0009] Furthermore, an incoming line positioning device is provided at one end of the line passage corresponding to the low-voltage metering cabinet, and the incoming line positioning device includes an incoming line port provided on the sealing plate, and a U-shaped bolt connection hole is provided on the positioning beam.

[0010] Furthermore, a reinforcing crossbeam is provided at the position of the lower support frame corresponding to the line inlet, and a transverse angle steel is provided at the lower end of the reinforcing crossbeam. The angle steel is opened upward to form a convex ridge at the lower end.

[0011] Furthermore, the positioning beam is made of channel steel with an opening facing upwards, and a plurality of connection holes are processed at the bottom of the channel steel, through which the cable fixings are connected.

[0012] Furthermore, the prefabricated isolation board includes two layers of panels, which are supported by a support frame, and an isolation cavity is formed between the two layers of panels. An isolation filling body is arranged in the isolation cavity, and a connecting profile is arranged on the panels.

[0013] Furthermore, the upper and lower ends of the prefabricated isolation plate are formed with sliding grooves to cooperate with the corresponding upper connecting beams and lower connecting beams.

[0014] Furthermore, the connection profiles on both sides of the prefabricated isolation board are fixed by a plurality of rivets, the interval between two adjacent rivets is 100-150 mm, and the rivets pass through the prefabricated isolation board.

[0015] Furthermore, a heat dissipation hole plate is provided at the lower end of the heat dissipation channel, an air inlet filter device is provided at one end of the heat dissipation channel corresponding to the feeder cabinet, an exhaust fan is provided at one end of the heat dissipation channel corresponding to the low-voltage metering cabinet, and a partition is provided in the heat dissipation channel between the low-voltage metering cabinet and the compensation cabinet.

[0016] The beneficial effects of the present invention are: 1. The cabinet includes a support frame, an upper support frame and a lower support frame. The support frame is divided into a low-voltage metering cabinet, a compensation cabinet and a feeder cabinet. A heat dissipation channel is installed on the upper support frame for unified heat dissipation and detection. A wire channel is installed on the lower support frame. The wire channel is a frame-type channel, which can better arrange cables. The support frame is used for overall support, with high structural strength and stability during transportation. The low-voltage metering cabinet, compensation cabinet and feeder cabinet are fixed in position, and the structure is more compact. 2. The support frame includes an upper connecting beam and a lower connecting beam. A prefabricated isolation plate and a component back plate are installed between the upper connecting beam and the lower connecting beam. The component back plate is fixed in multiple directions to ensure the stability of the component back plate structure. The prefabricated isolation plate has two panels, which are supported by a support frame. An isolation cavity is formed between the two panels. An isolation filling body is arranged in the isolation cavity to isolate electromagnetic, temperature and vibration, thereby reducing mutual interference between the low-pressure metering cavity, the compensation cavity and the feeder cavity; 3. A positioning beam is provided at the upper end of the lower support frame, and a wire groove is formed between the positioning beam and the lower connecting beam, so as to fix and guide the cables, so that the cables are arranged neatly and convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 It is a schematic diagram of the heat dissipation channel structure; Figure 3 This is a schematic diagram of the wire-passing channel structure; Figure 4 It is a schematic diagram of the supporting skeleton structure; Figure 5 It is a schematic diagram of the connection relationship between the prefabricated isolation plate and the lower connection beam; Figure 6 This is a schematic diagram of the structure of the prefabricated isolation panel; Figure 7 It is a schematic diagram of the cross section of the prefabricated isolation panel structure; Figure 8 Schematic diagram of the end face of the reinforced beam.

[0018] Among them: 1. Sealing plate; 2. Wire inlet; 3. Exhaust fan; 4. Lifting ear; 5. Cabinet door; 6. Industrial computer; 7. Control button; 8. Upper support frame; 9. Heat dissipation hole plate; 10. Partition; 11. Air inlet; 12. Support frame; 13. Component backplane 1; 14. Upper connecting beam; 15. Prefabricated isolation board; 16. Lower connecting beam; 17. Lower support frame; 18. Positioning beam; 19. Cover plate; 20. Reinforced beam; 21. Cable fixings; 22. Connecting profile; 23. Slide; 24. Fixed profile; 25. Wire mesh; 26. Rivet; 27. Polystyrene board; 28. End plate; 29. ​​Angle steel; 30. Panel. DETAILED DESCRIPTION

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0021] Example 1 like Figure 1-8As shown, a power grid system operation monitoring device includes a cabinet, and the cabinet includes a support frame 12. The support frame 12 is constructed of steel rectangular tubes and has a high structural strength, so that it can be hoisted and transported as a whole, and the overall weight is light. An upper connecting beam 14 is installed on the upper end of the support frame 12, and a lower connecting beam 16 is installed on the lower end of the support frame 12. A prefabricated isolation plate 15 is installed between the upper connecting beam 14 and the lower connecting beam 16. The prefabricated isolation plate 15 divides the inner cavity of the support frame 12 into a low-pressure metering cavity, a compensation cavity and a feeder cavity. Specifically, the prefabricated isolation plate 15 includes two layers of panels 30, and the two layers of panels 30 are made of galvanized steel plates. There is a through hole between the panels 30. The support frame composed of the steel wire mesh frame 25 is supported to control the distance between the two layers of panels 30, so that an isolation cavity is formed between the two layers of panels 30. The isolation cavity has an isolation filler, which is a polystyrene board 27. The steel wire mesh frame 25 is pre-buried in the polystyrene board 27 to improve the crack resistance of the polystyrene board 27. The polystyrene board 27 has a high heat insulation and vibration isolation effect. During use, the components in the compensation cavity have a high action frequency. The prefabricated isolation plate 15 can reduce the influence of the action of the components in the compensation cavity on the components in the low-pressure metering cavity and the feeder cavity. The polystyrene board 27 is fixed to the panel 30 by a polyurethane adhesive so that the prefabricated isolation plate 15 The overall structure is stable. A connecting profile 22 is fixed on the panel 30. The connecting profile 22 is used to connect the component backplane. The connecting profiles 22 on both sides of the prefabricated isolation plate 15 are fixed by multiple rivets 26. The spacing between two adjacent rivets 26 is 100-150mm. The rivets 26 pass through the prefabricated isolation plate 15, thereby making the structure of the prefabricated isolation plate 15 more stable and enabling the connecting profile 22 to be stably supported. A fixing profile 24 is also installed on the panel 30. The fixing profiles 24 on both sides of the prefabricated isolation plate 15 are also fixed by multiple rivets 26, thereby improving the stability of the prefabricated isolation plate 15. At the same time, the fixing profile 24 and the connecting profile Auxiliary structures such as wire ducts can be installed between the connecting profiles 22. Slide grooves 23 are formed at the upper and lower ends of the prefabricated isolation plate 15, which cooperate with the corresponding upper connecting beams 14 and lower connecting beams 16. During installation, the prefabricated isolation plate 15 is positioned, and the sizes of the low-pressure metering cavity, compensation cavity and feeder cavity can be adjusted conveniently. After adjustment, the positioning is performed through positioning structures such as top screws, and the slide grooves 23 correspond to the positions of the connecting profiles 22, so that the back plate of the component corresponds to the upper connecting beam 14, the lower connecting beam 16 and the connecting profiles 22 and is connected. After connection, the back plate of the component is stably supported, and the end plate 28 is installed on the edge of the prefabricated isolation plate 15 to ensure that the end surface is flat.

[0022] After the cabinet is separated by the prefabricated isolation plate 15, the low-voltage metering cavity forms a low-voltage metering cabinet, the compensation cavity forms a compensation cabinet, and the feeder cavity forms a feeder cabinet. The low-voltage metering cavity is installed with a component backplane 13, the compensation cavity is installed with a component backplane 2, and the feeder cavity is installed with a component backplane 3. The component backplane 13, the component backplane 2, and the component backplane 3 are all connected to the upper connecting beam, the lower connecting beam 16, and the connecting profile 22. The corresponding low-voltage metering components are installed on the component backplane 13, the corresponding reactive power compensation components are installed on the component backplane 2, and the corresponding feeder components are installed on the component backplane 3. During the installation process, lighter components such as circuit breakers and relays are installed first. After the cabinet is moved to the predetermined position, heavier components such as transformers and capacitors are installed, thereby facilitating lifting and transportation.

[0023] A lower support frame 17 is installed at the lower end of the cabinet. The lower support frame 17 is also built of steel rectangular tubes. A wire passage is formed in the lower support frame 17. The lower support frame 17 as a whole forms a wire passage, which can provide more wiring space. A positioning beam 18 is installed at the upper end of the lower support frame 17. A wire passage is formed between the positioning beam 18 and the lower connecting beam 16. The positioning beam 18 and the lower support frame 17 are detachably connected by bolts. The positioning beam 18 is made of channel steel, with an opening facing upward. A plurality of connecting holes are processed at the bottom of the channel steel, and a cable fixing member 21 is connected through the connecting hole. In this embodiment, the cable fixing member 21 uses a U-bolt, and the connecting hole is a U-bolt connecting hole. The threaded rod of the U-bolt passes through the connecting hole upward and is connected to a nut. The two wings of the channel steel prevent the threaded rod from protruding upward. The cable is fixed and separated through the U-bolt. The cable passes through the wire trough. The upper end of the lower support frame 17 outside the wire trough is shielded by a cover plate 19, and the cover plate 19 is a galvanized plate.

[0024] An upper support frame 8 is installed at the upper end of the cabinet, and a heat dissipation channel is formed on the upper support frame 8. A heat dissipation hole plate 9 is installed at the lower end of the heat dissipation channel. The heat dissipation hole plate 9 is a galvanized plate with heat dissipation holes. The heat dissipation channel corresponds to the air intake at one end of the feeder cabinet and is installed with an air intake filter device. The air intake filter device is a filter to reduce dust from entering the cabinet. An exhaust fan 3 is installed at one end of the heat dissipation channel corresponding to the low-voltage metering cabinet. A partition 10 is installed in the heat dissipation channel between the low-voltage metering cabinet and the compensation cabinet. The airflow passes through the air intake filter device and enters the top of the feeder cabinet, and then flows downward After passing through the line channel, it enters the compensation cabinet and the low-voltage metering cabinet. The heat dissipation channel can provide installation space for a larger exhaust fan 3, thereby controlling the heat dissipation air volume. The airflow first passes through the feeder cabinet, and the airflow is from top to bottom, which can quickly take away the heat and disperse the flow in the compensation cabinet and the low-voltage metering cabinet to avoid heat concentration. A lifting ear 4 is installed at the upper end of the upper support frame 8 to facilitate lifting. When in use, a wind hood and an upward exhaust fan can also be installed at the upper end of the upper support frame 8 to ensure the heat dissipation effect, but the overall height of the cabinet is increased.

[0025] A sealing plate 1 is installed outside the supporting skeleton 12 and the upper supporting frame 8 and the lower supporting frame 17. The sealing plate 1 is a galvanized steel plate with high structural strength. A cabinet door 5 is installed on the sealing plate 1. An industrial computer 6 and a control button 7 are installed on the cabinet door 5 to control the operation of corresponding components. The sealing plate 1 and the end plate 28 are fixed by bolts to improve the supporting strength of the sealing plate 1. The sealing plate 1 is processed with an air inlet 11 corresponding to the air inlet filter device. A fire extinguisher can be installed at the air inlet 11 as required.

[0026] A line-in positioning device is installed at one end of the line-through channel corresponding to the low-voltage metering cabinet. The line-in positioning device includes an inlet 2 processed on the sealing plate 1, and the bridge is connected through the inlet 2 to fix the outer end of the inlet. Since the inlet is a multi-core cable, it is difficult to bend. A reinforcing beam 20 is provided at the lower support frame 17 corresponding to the inlet 2. A transverse angle steel 29 is fixed at the lower end of the reinforcing beam 20. The angle steel 29 opens upward to form a convex ridge at the lower end, thereby guiding the multi-core cable. After the multi-core cable passes through the inlet 2 , bend the end of the multi-core cable upward, the positioning beam 18 is a channel steel and is detachably connected to the lower support frame 17, remove the positioning beam 18, and the inner end of the multi-core cable is clamped in the groove of the positioning beam 18. The positioning beam 18 is used as a force rod, and then bends upward. Under the action of the angle steel 29, the position corresponding to the angle steel 29 is easily deformed, and then the bending is completed, and the core of the multi-core cable is separated from the outer layer at the bending, which is convenient for stripping. After the cable is installed, the cable is fixed once by the cooperation of the bridge frame and the line inlet 2. The cables are fixed for a second time by U-bolts, thereby improving the fixing effect of the cables. Since the laying distance of the cables in the cable passage is short, the cables are fixed at both ends by U-bolts, so that the cables can be erected, which is easier to operate during maintenance. In addition, when moving the cabinet in a small range, the end can be raised by lifting the reinforcing beam 20, and then moved. Correspondingly, the sealing plate 1 on the back of the cabinet is installed on the back of the cabinet by sliding, and there are track grooves matching the sealing plate 1 on the upper support frame and the lower support frame. During maintenance, the end is raised by lifting the reinforcing beam 20, and then swung outward to form a maintenance operation space between the end and the wall, and the sealing plate 1 is slid out, and then the back of the corresponding component is operated and moved back after maintenance. Especially for heavier components, it is generally not possible to fix them on one side, and the back needs to be fixed to the component backplane. For lighter components, they can be fixed by the support track at the front of the component backplane.

[0027] The power grid system operation monitoring equipment provided in this embodiment integrates the core cabinet of power grid system operation monitoring, low-voltage metering cabinet, compensation cabinet and feeder cabinet, improves the connection stability among the three, has a more compact structure, and can perform unified grounding and heat dissipation treatment. The cabinet is a structural frame built of steel rectangular tubes, which provides a larger operating space for wiring and installing components. In particular, the introduction of the prefabricated isolation plate 15 ensures that the edge of the component backplane is stably supported, and forms electromagnetic, temperature and vibration isolation between each other, thereby reducing the mutual interference between the low-voltage metering cavity, compensation cavity and feeder cavity. In addition, when the low-voltage metering cabinet, compensation cabinet and feeder cabinet are integrated, more and more stable line passing space is provided through the line passing channel, making it possible to install a large number of control cables, and then the low-voltage metering cabinet, compensation cabinet and feeder cabinet can be controlled by a unified industrial control computer 6.

[0028] In some embodiments, since the upper support frame 8, the support skeleton 12, and the lower support frame 17 are all constructed of steel rectangular tubes, air holes are processed on the steel rectangular tubes, and high-pressure air pipes are installed in the steel rectangular tubes, and then connected to the carbon dioxide fire extinguisher through the high-pressure air pipes. The high-pressure air pipe corresponding to any steel rectangular tube is connected to a valve, which can achieve directional cooling and fire extinguishing.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power grid system operation monitoring device, characterized in that: It includes a cabinet, which includes a supporting frame. The cabinet is divided into a low-voltage metering cabinet, a compensation cabinet and a feeder cabinet. A lower supporting frame is arranged at the lower end of the cabinet, and a wire passing channel is arranged in the lower supporting frame. An upper supporting frame is arranged at the upper end of the cabinet, and a heat dissipation channel is arranged on the upper supporting frame. A sealing plate is arranged outside the supporting frame, and a cabinet door is arranged on the sealing plate.

2. The power grid system operation monitoring device according to claim 1, characterized in that: An upper connecting beam is arranged at the upper end of the supporting frame, and a lower connecting beam is arranged at the lower end of the supporting frame. A prefabricated isolation plate is arranged between the upper connecting beam and the lower connecting beam, and the prefabricated isolation plate divides the inner cavity of the supporting frame into a low-pressure metering cavity, a compensation cavity and a feeder cavity. A component backplane 1 is arranged in the low-pressure metering cavity, a component backplane 2 is arranged in the compensation cavity, and a component backplane 3 is arranged in the feeder cavity. The component backplanes 1, 2 and 3 are all connected to the upper connecting beam and the lower connecting beam.

3. The power grid system operation monitoring device according to claim 2, characterized in that: A positioning beam is arranged at the upper end of the lower support frame, and a wire groove is formed between the positioning beam and the lower connecting beam.

4. The power grid system operation monitoring device according to claim 3, characterized in that: An incoming line positioning device is provided at one end of the line passage corresponding to the low-voltage metering cabinet. The incoming line positioning device includes an incoming line port provided on the sealing plate, and a U-shaped bolt connection hole is provided on the positioning beam.

5. The power grid system operation monitoring device according to claim 4, characterized in that: A reinforcing crossbeam is arranged at the position of the lower support frame corresponding to the line inlet, and a transverse angle steel is arranged at the lower end of the reinforcing crossbeam. The angle steel opens upward, thereby forming a convex ridge at the lower end.

6. The power grid system operation monitoring device according to claim 3, characterized in that: The positioning beam is made of channel steel, with an opening facing upwards. A plurality of connection holes are processed at the bottom of the channel steel, and the cable fixing pieces are connected through the connection holes.

7. The power grid system operation monitoring device according to claim 2, characterized in that: The prefabricated isolation board comprises two layers of panels, which are supported by a support frame, and an isolation cavity is formed between the two layers of panels. An isolation filling body is arranged in the isolation cavity, and a connecting profile is arranged on the panels.

8. The power grid system operation monitoring device according to claim 7, characterized in that: The upper and lower ends of the prefabricated isolation plate are both formed with sliding grooves, which are then matched with the corresponding upper connecting beam and lower connecting beam.

9. The power grid system operation monitoring device according to claim 7, characterized in that: The connection profiles on both sides of the prefabricated isolation board are fixed by a plurality of rivets, the spacing between two adjacent rivets is 100-150 mm, and the rivets pass through the prefabricated isolation board.

10. The power grid system operation monitoring device according to claim 1, characterized in that: A heat dissipation hole plate is arranged at the lower end of the heat dissipation channel, an air inlet filter device is arranged at the end of the heat dissipation channel corresponding to the feeder cabinet, an exhaust fan is arranged at the end of the heat dissipation channel corresponding to the low-voltage metering cabinet, and a partition is arranged in the heat dissipation channel between the low-voltage metering cabinet and the compensation cabinet.

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