Pluggable reactive power compensation device
By designing pluggable capacitor banks, cooling fans and temperature sensors in the reactive compensation device, the problem of heating of the capacitor in a high-temperature environment is solved, effective heat dissipation and status monitoring of the capacitor is realized, and the safety and reliability of the device are improved.
Patent Information
- Application Number
- CN202421001288.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Existing capacitors are prone to heat up in high temperature environments, resulting in a decrease in capacitance and equipment efficiency, and may cause safety hazards such as bulging, ignition, and explosion, affecting the reactive power compensation effect and the stable operation of the power system.
A pluggable reactive power compensation device is designed. Through the space structure design of the capacitor and the leakage design of the base, it is equipped with a cooling fan and a temperature sensor to realize effective heat dissipation and status monitoring of the capacitor, and replace the superheating capacitor in a timely manner.
It effectively suppresses the heating of the capacitor, extends the service life of the capacitor, improves the operating safety and reliability of the reactive compensation device, and reduces maintenance costs and accident risks.
Smart Images
Figure CN222814095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric power systems, in particular to a pluggable reactive power compensation device for capacitor reactive power compensation. Background Art
[0002] Reactive power compensation plays a role in improving the power factor of the power grid in the power system, while reducing the loss of power transformers and transmission lines, increasing equipment utilization, and improving power quality. Reactive power compensation devices are indispensable electrical equipment in power systems.
[0003] Reactive power compensation devices mainly use capacitors. Capacitors generate heat due to internal losses. Overcurrent causes dielectric damage and causes heating. Capacitor aging causes capacitor heating. At the same time, the external ambient temperature is too high, which affects the heat dissipation of the capacitor and also causes serious heating of the capacitor. When the ambient temperature exceeds 50°C, the power capacitor will age and reduce the service life of the capacitor. Capacitor heating causes the capacitance of the capacitor to decrease, resulting in reduced circuit efficiency and increased short circuit risk. In addition, overheating of power capacitors will accelerate the aging process of its internal materials, resulting in a shortened capacitor life. When the operating temperature is higher than 70°C, power capacitors are prone to bulging, fire, explosion and other phenomena. It can be seen that overheating of capacitors not only affects the reactive power compensation effect, but will even endanger the safe and stable operation of the power system.
[0004] In order to prevent the capacitor from overheating, a certain distance should be maintained between the capacitors for heat dissipation. If the distance between the capacitors is too small, the heat cannot be dissipated in time, resulting in a certain amount of heat accumulation. When the heat exceeds the allowable range of the capacitor's operating temperature, the operating temperature of the power capacitor will be too high. At the same time, the temperature of the capacitor should be monitored to ensure that when the capacitor is abnormally heated due to internal overcurrent and insulation aging, fans and other auxiliary heat dissipation methods are used in time. When the overheating threshold is exceeded, the capacitor should be stopped immediately, the power supply should be turned off, or the circuit connection related to the capacitor should be disconnected to prevent further damage or accidents. In addition, if the capacitor continues to overheat or fails, it needs to be replaced with a new capacitor in time. Therefore, if the capacitor is easy to install and maintain, it can greatly improve the operation and maintenance efficiency and improve the reliability of equipment operation. Summary of the invention
[0005] In order to solve the existing problem of capacitor heating and to replace overheated capacitors in a timely and convenient manner, and to safely and effectively realize reactive power compensation of capacitors, the utility model provides a pluggable reactive power compensation device, which can realize reactive power compensation of the power system, effectively suppress the heating of the capacitor through the spatial structure design of the capacitor and the leakage design of the base and the provision of heat dissipation equipment, and through capacitor status monitoring, if the capacitor continues to overheat, the pluggable design realizes easy installation and maintenance.
[0006] The technical solution adopted by the utility model to solve its technical problems is:
[0007] A pluggable reactive power compensation device has a box structure. The box includes an upper and lower part. The upper part includes a monitoring display instrument and a status display and an execution button. The lower part includes a door lock and a compensation device cabinet door. The compensation device cabinet door is provided with an observation window and a front heat dissipation hole. The side of the box is provided with a plurality of side heat dissipation holes. A communication and control system is installed in the upper part of the box, and a capacitor group consisting of a plurality of capacitors is installed in the lower part of the box. The capacitors are installed on the bottom frame of the capacitor group. A cooling fan is installed at the bottom of the box, and the cooling fan is connected to the control system through communication.
[0008] Furthermore, the capacitor groups are arranged longitudinally and transversely, with the transverse capacitor groups arranged in rows and the longitudinal capacitor groups arranged in columns, with transverse spacing between rows and longitudinal spacing between columns.
[0009] Furthermore, the capacitor is connected to the wiring socket, the contactor and the switch through the wiring terminal.
[0010] Furthermore, a temperature sensor is installed on the outer surface of the capacitor.
[0011] Furthermore, holes are arranged on the bottom frame of the capacitor bank, a capacitor screen base is installed by hinges, and the rotating baffle is fixedly connected to the bottom frame of the capacitor bank by fixing screws.
[0012] Furthermore, the bottom frame of the capacitor bank is fixedly connected to the box body.
[0013] Furthermore, when the rotating baffle is rotated below the capacitor leakage screen base, the hole of the bottom frame of the capacitor group is in a closed state; when the rotating baffle is rotated outside the capacitor leakage screen base, the capacitor leakage screen base is in an open state.
[0014] Furthermore, the heat dissipation holes are arranged on the front side of the device box, and their structures include circular, square, hexagonal, and long strip shapes.
[0015] Furthermore, the side heat dissipation holes are arranged on the side of the device box, and their structures include circular, square, hexagonal, and long strip shapes.
[0016] Furthermore, a humidity sensor is installed on the outer surface of the capacitor.
[0017] The utility model has the following beneficial effects and advantages:
[0018] The utility model ensures good heat dissipation of the capacitor through spatial arrangement and heat dissipation hole setting, carries out capacitor status monitoring, and is equipped with a heat dissipation fan, and controls the start and stop of the heat dissipation fan according to the capacitor status monitoring result. In addition, in order to prevent the capacitor from overheating and causing bulging, fire, explosion and the like, the overheated capacitor can be replaced in time according to the capacitor status monitoring. Since the utility model adopts a pluggable capacitor, it is convenient and quick to disassemble and assemble, which can greatly improve the safety and reliability of the operation of the reactive compensation device, and also significantly improve the work efficiency of the operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 It is a main view of the appearance of a pluggable reactive power compensation device;
[0021] Figure 2 It is a main internal view of a pluggable reactive power compensation device;
[0022] Figure 3 It is a side view of the internal arrangement of a pluggable reactive power compensation device;
[0023] Figure 4 It is a bottom view of each row of capacitor banks inside the device;
[0024] Figure 5 It is a schematic diagram of plug-in capacitor installation;
[0025] Figure 6 is a diagram of the arrangement of a single capacitor.
[0026] In the figure: monitoring display instrument 1, status display and execution button 2, observation window 3, door lock 4, front heat dissipation hole 5, side heat dissipation hole 6, capacitor 7, wiring socket and contactor and switch 8, surface temperature sensor 9, capacitor terminal 10, cooling fan 11, compensation device cabinet door 12, communication and control system 13, capacitor leakage screen base 14, fixing screw 15, rotating baffle 16, hinge 17, capacitor bank bottom frame 18. DETAILED DESCRIPTION
[0027] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation methods in the embodiments of the present invention. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0029] Refer to the following Figure 1-Figure 6 The technical solutions of some embodiments of the utility model are described.
[0030] Example 1
[0031] The utility model provides an embodiment, which is a pluggable reactive power compensation device. Figure 1 As shown, in Figure 1 In the figure, the utility model shows a pluggable reactive power compensation device with a main appearance view. The device is a box structure, and the whole box is divided into two parts, the upper part includes a monitoring display instrument 1 and a status display and execution button 2, and the main functions are display, control and operation parts, which can display operating parameters, operating status, and perform related operations; the lower part includes an observation window 3, which can observe the situation inside the device during operation; the door lock 4 is to ensure the safety of operation, and can be unlocked with a key when necessary; the front heat dissipation hole 5 is a heat dissipation hole arranged on the front of the device, and the side heat dissipation hole 6 is a heat dissipation hole arranged on the side of the device, and the two can be set in different appearance forms, including round, square, hexagonal, long strip, etc., to achieve front heat dissipation of the device, increase the ventilation volume of the device, and reduce the internal temperature of the device; the cabinet door 12 of the compensation device is opened during maintenance and related necessary operations, and closed during normal operation. If the cabinet door is opened casually, it may touch the live components, causing electrical accidents and endangering the safety of personnel. At the same time, it may cause the equipment sealing to be damaged and dust to enter, thereby affecting the service life of the equipment.
[0032] like Figure 2 As shown, in Figure 2 In the figure, a main internal view of a pluggable reactive power compensation device is shown. The capacitor 7 is connected to the wiring socket, the contactor and the switch 8 through the wiring terminal 10. The plug-in connection simplifies the installation of the capacitor 7, improves the installation efficiency, and facilitates the inspection and maintenance. There is no need to remove the wires and connect the wires. The inspection and replacement can be completed by directly plugging and unplugging. At the same time, the capacitors are arranged in rows and columns, and the capacitors 7 in each row and column maintain a certain distance from each other, which is conducive to heat dissipation. Determine the installation position of the surface temperature sensor 9 on the surface of the capacitor, and stick it on the outer surface of the capacitor 7 to monitor the temperature of the running capacitor.
[0033] When the temperature value monitored by the surface temperature sensor 9 exceeds a certain threshold, the communication and control system 13 starts the cooling fan 11 installed at the bottom of the device. During the operation of the cooling fan 11, the fan speed is adjusted according to the temperature sensor continuously monitoring the temperature of the capacitor. Usually, the fan speed increases with the increase of temperature. In addition, when the temperature of the capacitor drops to a preset recovery threshold, the communication and control system 13 will automatically turn off the cooling fan 11.
[0034] like Figure 3 As shown, in Figure 3 In the side view of the internal arrangement of the device, a communication and control system 13 is arranged on the upper part of the device, which collects and processes data information such as capacitor current and temperature, and performs related operations such as protection and control, that is, communication and regulation between devices are achieved by transmitting information and control signals. A capacitor group composed of capacitors 7 is arranged at the lower part of the device, and its longitudinal and transverse spatial arrangement is arranged in rows, and the longitudinal capacitor group is arranged in columns. The rows and rows are kept in a transverse spacing, and the columns and columns are kept in a longitudinal spacing. In particular, the arrangement between each column is different from the traditional arrangement in the same column, mainly for better heat dissipation and facilitating the disassembly and assembly of the equipment. The cooling fan 11 is arranged at the bottom of the device, and when it is started, the wind is blown upward to the capacitor group. Due to the unblocked arrangement design of the capacitor group, the capacitor group can receive the wind blowing from the bottom, which is conducive to heat dissipation. The connection relationship between the capacitor 7 and the wiring socket, the contactor and the switch 8 through the wiring terminal 10 is also clearly visible.
[0035] like Figure 4 As shown, in Figure 4 In the embodiment shown, the bottom frame 18 of the capacitor group is provided with holes according to the cross-sectional size of the capacitor, and the capacitor mesh base 14 is installed through the hinge 17. The fixing screw 15 fixes the rotating baffle 16 to the bottom frame 18 of the capacitor group. When the rotating baffle 16 is rotated under the capacitor mesh base 14, the hole of the bottom frame 18 of the capacitor group is closed. When the rotating baffle 16 is rotated outside the capacitor mesh base 14, the capacitor mesh base 14 is opened, and the capacitor can be disassembled and assembled. The mesh design of the capacitor mesh base 14 is also conducive to the heat dissipation of the capacitor, and at the same time, it can increase the friction between the bottom of the capacitor and the base, which is conducive to the fixing of the capacitor.
[0036] like Figure 5 As shown, in Figure 5 In the illustrated embodiment, a plug-in capacitor installation diagram is shown, and the capacitor 7 can be installed on the bottom frame 18 of the capacitor bank by rotating the rotating baffle 16 to open the capacitor leakage screen base 14. At the same time, the reverse operation can also realize the removal of the capacitor.
[0037] like Figure 6As shown, in Figure 6 In the illustrated embodiment, when the capacitor mesh base 14 is opened, the capacitor 7 passes through the hole of the bottom frame 18 of the capacitor group upward, and when the capacitor terminal 10 contacts the wiring socket, the contactor and the switch 8 and is well connected, the capacitor mesh base 14 is fixed, and the capacitor 7 can be quickly disassembled and assembled, and the disassembly and assembly process is convenient and simple, without removing wires and wiring.
[0038] Example 2
[0039] The utility model provides an embodiment, which is a pluggable reactive power compensation device. A humidity sensor can also be installed on the outer surface of the capacitor 7 to monitor the humidity in the box at any time to ensure that the device works smoothly and is not damaged by external humidity.
[0040] The rest is the same as in Example 1.
[0041] Example 3
[0042] The utility model provides an embodiment, which is a pluggable reactive power compensation device. The front heat dissipation hole 5 and the side heat dissipation hole 6 can be provided with multiple, such as 1, 2, 3...N, and the number can be arbitrarily selected according to the size of the box.
[0043] The rest is the same as in Example 1.
[0044] Example 4
[0045] The utility model provides an embodiment, which is a pluggable reactive power compensation device. A plurality of cooling fans 11 can be further provided on two side surfaces of the box body for better cooling the inside of the box body.
[0046] The rest is the same as in Example 1.
[0047] In the present utility model, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0048] In the present invention, the terms “first” and “second” are only used for descriptive purposes and should not be understood as indicating or implying relative importance.
[0049] In the present invention, unless otherwise clearly specified or limited, the terms "install", "connect", "connected", "fixed" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0050] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0051] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.
Claims
1. A pluggable reactive power compensation device, characterized in that: The device is a box structure, the box comprising an upper and lower part, the upper part comprising: a monitoring display instrument (1) and a status display and execution button (2); the lower part comprising a door lock (4) and a compensation device cabinet door (12), the compensation device cabinet door (12) being provided with an observation window (3) and a front heat dissipation hole (5); a side surface of the box body being provided with a plurality of side heat dissipation holes (6); a communication and control system (13) being installed in the upper part of the box body, a capacitor group consisting of a plurality of capacitors (7) being installed in the lower part of the box body, the capacitors (7) being installed on a bottom frame (18) of the capacitor group; a heat dissipation fan (11) being installed in the bottom of the box body, the heat dissipation fan (11) being communication-connected to the control system (13).
2. The pluggable reactive power compensation device according to claim 1, characterized in that: The capacitor groups are arranged longitudinally and transversely, with the transverse capacitor groups arranged in rows and the longitudinal capacitor groups arranged in columns, with transverse spacing between rows and longitudinal spacing between columns.
3. The pluggable reactive power compensation device according to claim 1, characterized in that: The capacitor (7) is connected to the wiring socket, the contactor and the switch (8) via the wiring terminal (10).
4. The pluggable reactive power compensation device according to claim 1 is characterized in that: A temperature sensor (9) is mounted on the outer surface of the capacitor (7).
5. The pluggable reactive power compensation device according to claim 1, characterized in that: The bottom frame (18) of the capacitor bank is provided with holes, a capacitor screen base (14) is installed via a hinge (17), and a rotating baffle (16) is fixedly connected to the bottom frame (18) of the capacitor bank via fixing screws (15).
6. The pluggable reactive power compensation device according to claim 5 is characterized in that: The capacitor bank bottom frame (18) is fixedly connected to the box body.
7. The pluggable reactive power compensation device according to claim 5 is characterized in that: When the rotating baffle (16) is rotated below the capacitor leakage screen base (14), the hole of the bottom frame (18) of the capacitor group is in a closed state; when the rotating baffle (16) is rotated outside the capacitor leakage screen base (14), the capacitor leakage screen base (14) is in an open state.
8. The pluggable reactive power compensation device according to claim 1, characterized in that: The heat dissipation holes (5) are arranged on the front side of the device box, and their structures include circular, square, hexagonal, and long strip shapes.
9. The pluggable reactive power compensation device according to claim 1, characterized in that: The side heat dissipation holes (6) are arranged on the side of the device box, and their structures include circular, square, hexagonal, and long strip shapes.
10. The pluggable reactive power compensation device according to claim 1, characterized in that: A humidity sensor is also installed on the outer surface of the capacitor (7).