Sectional capacitor device and control method thereof

Abstract

The invention belongs to the technical field of capacitors, and provides a segmented capacitor device and a control method thereof, and the segmented capacitor device comprises a capacitor segment, a control segment, and a butt joint segment. And the capacitor section, the control section and the butt joint section are respectively connected end to end. According to the invention, the capacitor device is divided into the capacitance section, the control section and the butt joint section, so that the modular design is realized. According to the design, each part can be independently maintained, replaced or upgraded, and the whole device does not need to be disassembled, so that the maintenance cost is greatly reduced, and the maintenance time is greatly shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitors, and in particular relates to a segmented capacitor device and a control method thereof. Background Art

[0002] With the rapid development of the electric power industry, the stability and efficiency of the power system have become the focus of attention. Reactive power compensation is an important means to improve the power factor of the power grid and reduce reactive power loss. Traditional capacitor devices have problems such as complex structure, difficult maintenance, and unsatisfactory compensation effect. Therefore, it is of great significance to develop a segmented capacitor device with simple structure, easy maintenance and good compensation effect. Summary of the invention

[0003] In order to overcome the problems existing in the prior art, an object of the present invention is to provide a segmented capacitor device and a control method thereof.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a segmented capacitor device comprises:

[0005] A capacitor section, a control section and a docking section; the capacitor section, the control section and the docking section are connected head to tail respectively;

[0006] The capacitor section includes a first housing, an electrolyte unit, a core, a sealing plug, a positive electrode and a negative electrode;

[0007] A cavity is provided in the first shell, the electrolyte unit is placed in the cavity, the core is embedded in one end of the electrolyte unit facing the opening of the cavity, and one end of the core extends to the outside of the electrolyte unit, and the sealing plug is provided at the opening of the cavity; the end of the positive electrode passes through the sealing plug to connect with the core, and the end of the negative electrode passes through the sealing plug to connect with the electrolyte unit;

[0008] The control section includes a second housing and a control component; one end of the second housing is connected to the first housing, the control component is arranged in the second housing, and the control component is electrically connected to the positive electrode and the negative electrode;

[0009] The docking section includes a third shell, and the bottom of the third shell is connected to the other end of the second shell.

[0010] Its main working principle is as follows: First, the capacitor section is the core energy storage part of the entire capacitor device, which contains a cavity filled with an electrolyte unit. This electrolyte unit and the core together form the medium between the two poles of the capacitor. One end of the core is embedded in the electrolyte unit and extends to the outside of the electrolyte unit. The core is connected to the positive electrode through the connection at the sealing plug. The negative electrode is directly connected to the other part of the electrolyte unit (the non-core contact part) and also passes through the sealing plug.

[0011] When voltage is applied across the capacitor, the medium formed by the electrolyte unit and the core stores charge between the positive and negative electrodes, forming an electric field, thereby realizing the capacitor effect.

[0012] The control section includes a control component, which is electrically connected to the positive and negative electrodes of the capacitor section. Through the control component, intelligent control of the capacitor device can be achieved to improve safety and reliability.

[0013] The docking section is mainly used as the connection part between the capacitor device and the external circuit. It includes a third shell, the bottom of which is connected to the other end of the control section (i.e., the second shell). On the docking section, it is connected to the external circuit to connect the capacitor device to a larger circuit system.

[0014] In summary, the working principle of the segmented capacitor device is to store charge through the capacitor segment, realize intelligent control through the control segment, and finally connect with the external circuit through the docking segment to form a complete capacitor system.

[0015] Preferably, storage grooves are provided on both sides of the first shell, movable grooves are provided on both sides of the storage grooves, a movable plate is provided in the storage grooves, sliders are provided on both sides of the movable plate, and the movable plate and the storage grooves are connected through the sliders and the movable grooves.

[0016] Preferably, a temperature control structure is provided at one end of the first housing away from the opening;

[0017] The temperature control structure includes a base, a cooling block and heat dissipation fins; the base is fitted on an end of the first housing away from the opening.

[0018] Preferably, an alarm module, a remote monitoring module and a temperature detection module are further provided at one end of the first shell away from the opening, and the alarm module, the remote monitoring module and the temperature detection module are connected to each other, and the alarm module, the remote monitoring module and the temperature detection module are attached to one side of the cooling block.

[0019] Preferably, the control component includes an acquisition module, a low voltage dynamic compensation control module, a compensation capacitor module, a switching module, a remote control module, a system control module, a filtering module, and an information transmission module;

[0020] The acquisition module, the low-voltage dynamic compensation control module, the compensation capacitor module and the switching module are connected in sequence, and the switching module is connected to the filtering module;

[0021] The remote control module and the system control module are connected in sequence, and the system control module is connected to the filter module, and the filter module is connected to the information transmission module.

[0022] Preferably, two groups of insulating sleeves are provided in the third outer shell, the two groups of insulating sleeves pass through the bottom of the third outer shell and are connected with the second outer shell, and the positive electrode and the negative electrode are respectively sleeved in the two groups of insulating sleeves.

[0023] Preferably, it further comprises a cover body, and docking ports are arranged on both sides of the cover body;

[0024] The ends of the third shell are provided with docking blocks on both sides, the cover is buckled at the opening of the third shell, and the docking ports on both sides are matched and connected with the docking blocks on both sides.

[0025] A control method for a segmented capacitor device, based on the segmented capacitor device described in any one of the above, comprises the following steps:

[0026] S1, the acquisition module collects voltage data in the power system in real time;

[0027] S2, the low voltage dynamic compensation control module analyzes and processes the voltage data according to the voltage data provided by the receiving acquisition module, and determines whether the power system needs reactive power compensation and the amount of compensation; the low voltage dynamic compensation control module calculates the compensation capacitor capacity that needs to be invested according to actual needs;

[0028] S3, the compensation capacitor module provides reactive power compensation capacitors of corresponding capacity according to the instructions of the low voltage dynamic compensation control module;

[0029] S4, the switching module is responsible for switching the capacitor in the compensation capacitor module into or out of the grid;

[0030] S5, the filter module filters the harmonics and inrush current generated by the switching module;

[0031] S6, remote control module allows remote users to monitor and control the system through the communication network;

[0032] S7, the system control module receives the instructions from the remote control module and comprehensively controls the entire system by integrating the data from the acquisition module;

[0033] S8. The information transmission module is responsible for transmitting the information generated by the acquisition module, low-voltage dynamic compensation control module, remote control module, etc. to the corresponding receiving end.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. A modular design is achieved by dividing the capacitor device into a capacitor section, a control section, and a docking section. This design allows each section to be maintained, replaced, or upgraded independently without disassembling the entire device, greatly reducing maintenance costs and time.

[0036] The modular design also means that the number of capacitor segments can be flexibly increased or decreased according to actual needs to adjust the capacity of the entire capacitor device. This scalability enables the device to adapt to the needs of power systems of different sizes, improving the flexibility and adaptability of the system; and the control components built into the control segment can monitor the working status of the capacitor in real time, such as voltage, current and other parameters, and perform protective actions when necessary, such as cutting off the circuit to prevent overvoltage or overcurrent. This intelligent control strategy greatly improves the safety and reliability of the capacitor device.

[0037] 2. The control component of the segmented capacitor device obtains power system parameters through the acquisition module, and after analysis and processing by the low-voltage dynamic compensation control module, reactive power compensation is achieved through the compensation capacitor module and the switching module, while the filter module is used to reduce the interference of harmonics and inrush current. The remote control module and the system control module provide remote monitoring and control functions, while the information transmission module ensures real-time transmission of information. The entire system works together to improve the power factor of the power grid, reduce reactive power loss, and protect power grid equipment from harmonic damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0039] Figure 1 is an overall schematic diagram of the segmented capacitor device;

[0040] Figure 2 is a cross-sectional schematic diagram of the segmented capacitor device;

[0041] Figure 3 is a flow chart of a control method of the segmented capacitor device.

[0042] 1. Capacitor section; 10. First shell; 11. Core; 12. Sealing plug; 13. Positive electrode; 14. Negative electrode; 15. Temperature control structure; 150. Base; 151. Cooling block; 152. Heat dissipation fins; 153. Alarm module; 154. Remote monitoring module; 155. Temperature detection module; 16. Storage tank; 17. Moving tank; 18. Moving plate; 19. Slider; 2. Control section; 20. Second shell; 21. Control assembly; 210. Acquisition module; 211. Low-voltage dynamic compensation control module; 212. Compensation capacitor module; 213. Switching module; 214. Remote control module; 215. System control module; 216. Filter module; 217. Information transmission module; 3. Docking section; 30. Third shell; 300. Docking block; 31. Cover; 310. Docking port. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0045] Example 1

[0046] This embodiment provides a segmented capacitor device, such as Figure 1-Figure 2 As shown, it is composed of a capacitor section 1, a control section 2 and a docking section 3. The capacitor section 1 contains an electrolyte unit and a core 11, forming the core energy storage part of the capacitor. The positive electrode 13 is connected to the core 11, and the negative electrode 14 is connected to the electrolyte unit, and the sealing of the cavity is ensured by a sealing plug 12. The control section 2 includes a control component 21, which is electrically connected to the positive and negative electrodes 14 of the capacitor section 1, and is used to monitor and control the working state of the capacitor. The docking section 3 serves as a connection part with the external circuit and is connected to the control section 2 through a standardized interface.

[0047] Specifically, first, the capacitor section 1 is the core energy storage part of the entire capacitor device, which contains a cavity filled with an electrolyte unit. The electrolyte unit and the core 11 together form the medium between the two electrodes of the capacitor. One end of the core 11 is embedded in the electrolyte unit and extends to the outside of the electrolyte unit. The core 11 is connected to the positive electrode 13 through the connection at the sealing plug 12. The negative electrode 14 is directly connected to the other part of the electrolyte unit (the non-core 11 contact part) and also passes through the sealing plug 12.

[0048] When voltage is applied across the capacitor, charges are stored between the positive electrode 13 and the negative electrode 14 through the medium formed by the electrolyte unit and the core 11, forming an electric field, thereby achieving a capacitor effect.

[0049] The control section 2 includes a control component 21, which is electrically connected to the positive electrode 13 and the negative electrode 14 of the capacitor section 1. Through the control component 21, intelligent control of the capacitor device can be achieved to improve safety and reliability.

[0050] The docking section 3 is mainly used as a connection part between the capacitor device and the external circuit. It includes a third housing 30, the bottom of which is connected to the other end of the control section 2 (i.e., the second housing 20). The docking section 3 is connected to the external circuit to connect the capacitor device to a larger circuit system.

[0051] In summary, the working principle of the segmented capacitor device is to store charge through the capacitor segment 1, realize intelligent control through the control segment 2, and finally connect with the external circuit through the docking segment 3 to form a complete capacitor system.

[0052] In some optional embodiments, a storage slot 16 and a movable slot 17, as well as a movable plate 18, are provided on both sides of the first housing 10. The movable plate 18 is connected to the movable slot 17 through a slider 19 and can slide in the storage slot 16. This design allows the capacitor device to easily adjust the internal space when necessary to adapt to different installation environments or maintenance requirements. The design of the movable plate 18 increases the internal space flexibility of the capacitor device, facilitates installation and maintenance, and improves the adaptability of the capacitor device to different installation environments.

[0053] In some optional embodiments, a temperature control structure 15 is provided at one end of the first housing 10 away from the opening, including a base 150, a cooling block 151 and a heat dissipation fin 152. The temperature control structure 15 is fitted on the first housing 10, and effectively dissipates the heat generated by the capacitor during operation through the cooling block 151 and the heat dissipation fin 152, thereby ensuring the normal operation of the capacitor device. The design of the temperature control structure 15 improves the thermal management performance of the capacitor device, prolongs the service life of the capacitor, and ensures the stability and reliability of the capacitor device in a high temperature environment.

[0054] In some optional embodiments, an alarm module, a remote monitoring module 154 and a temperature detection module 155 are also provided at one end of the first housing 10 away from the opening. These modules are interconnected and can monitor the operating temperature and state of the capacitor in real time, and issue an alarm or perform remote monitoring in abnormal situations. The alarm and remote monitoring module 154 improve the safety and reliability of the capacitor device, facilitate timely detection and handling of abnormal situations of the capacitor device, and reduce the failure rate.

[0055] In some optional embodiments, the control component 21 includes a collection module 210, a low voltage dynamic compensation control module 211, a compensation capacitor module 212, a switching module 213, a remote control module 214, a system control module 215, a filtering module 216 and an information transmission module 217. These modules are interconnected to form a complete control system that can monitor and control the working state of the capacitor in real time, and perform filtering and information transmission. The complex control component 21 improves the intelligence level of the capacitor device and realizes the precise control and optimized operation of the capacitor device.

[0056] In some optional embodiments, two sets of insulating sleeves are provided in the docking section 3 to protect the positive electrode 13 and the negative electrode 14 from interference from the external environment. At the same time, a cover 31 is also provided, which is connected to the third housing 30 through the docking port 310 and the docking block 300 to ensure the sealing and stability of the docking section 3. The design of the insulating sleeve and the cover 31 improves the electrical safety and stability of the capacitor device and ensures the reliability of the connection between the capacitor device and the external circuit.

[0057] In summary, each embodiment has been improved and optimized on the basis of the basic segmented capacitor device, thereby improving the performance, safety and reliability of the capacitor device. These improvements and optimizations make the capacitor device more adaptable to different application scenarios and requirements.

[0058] Example 2

[0059] This embodiment provides a control method and working principle of a segmented capacitor device. Figure 3 As shown:

[0060] S1. Acquisition module 210 This is the front end of the entire control system, responsible for real-time acquisition of relevant parameters in the power system, such as voltage, current, power factor, etc. These parameters are the basis for subsequent control decisions.

[0061] S2. The low voltage dynamic compensation control module 211 receives the data provided by the acquisition module 210, analyzes and processes the data, and determines whether the power system needs reactive power compensation and the amount of compensation. Reactive power compensation is an important means to improve the power factor of the power grid and improve the efficiency of the power grid. The low voltage dynamic compensation control module 211 calculates the compensation capacitor capacity required according to actual needs.

[0062] S3, compensation capacitor module 212: provides reactive power compensation capacitors of corresponding capacity according to the instruction of low voltage dynamic compensation control module 211. These capacitors can emit or absorb reactive power, thereby adjusting the power factor of the power grid.

[0063] S4, the switching module 213 is responsible for putting the capacitor in the compensation capacitor module 212 into or removing it from the power grid. The switching module 213 needs to respond to the control command quickly and accurately to ensure the timeliness and effectiveness of reactive power compensation. At the same time, the switching module 213 is also connected to the filtering module 216 to reduce the interference of harmonics and inrush currents generated during the switching process on the power grid.

[0064] S5. The filter module 216 filters the harmonics and inrush current generated by the switching module 213 to ensure the cleanliness and stability of the power grid. The filter module 216 is an important measure to protect power grid equipment from harmonic damage.

[0065] S6. The remote control module 214 allows remote users to monitor and control the system through the communication network, which improves the flexibility and operability of the system, allowing users to adjust the control strategy at any time according to actual needs.

[0066] S7, the system control module 215 receives the instructions of the remote control module 214, and comprehensively controls the entire system based on the data of the acquisition module 210. The system control module 215 is the core of the control system, responsible for coordinating the work of each module to ensure the stable and efficient operation of the system.

[0067] S8, the information transmission module 217 is responsible for transmitting the information generated by the acquisition module 210, the low voltage dynamic compensation control module 211, the remote control module 214, etc. to the corresponding receiving end. This includes real-time data, alarm information, control instructions, etc. The reliability and speed of the information transmission module 217 have an important impact on the overall performance of the system.

[0068] In summary, the control component 21 of the segmented capacitor device obtains the power system parameters through the acquisition module 210, and after analysis and processing by the low-voltage dynamic compensation control module 211, reactive power compensation is achieved through the compensation capacitor module 212 and the switching module 213, and the interference of harmonics and inrush current is reduced by the filter module 216. The remote control module 214 and the system control module 215 provide remote monitoring and control functions, while the information transmission module 217 ensures the real-time transmission of information. The entire system works together to improve the power factor of the power grid, reduce reactive power loss, and protect power grid equipment from harmonic damage.

[0069] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A segmented capacitor device, characterized in that: include: A capacitor section, a control section and a docking section; the capacitor section, the control section and the docking section are connected head to tail respectively; The capacitor section includes a first housing, an electrolyte unit, a core, a sealing plug, a positive electrode and a negative electrode; A cavity is provided in the first shell, the electrolyte unit is placed in the cavity, the core is embedded in one end of the electrolyte unit facing the opening of the cavity, and one end of the core extends to the outside of the electrolyte unit, and the sealing plug is provided at the opening of the cavity; the end of the positive electrode passes through the sealing plug to connect with the core, and the end of the negative electrode passes through the sealing plug to connect with the electrolyte unit; The control section includes a second housing and a control component; one end of the second housing is connected to the first housing, the control component is arranged in the second housing, and the control component is electrically connected to the positive electrode and the negative electrode; The docking section includes a third shell, and the bottom of the third shell is connected to the other end of the second shell.

2. The segmented capacitor device according to claim 1, characterized in that Storage grooves are arranged on both sides of the first shell, movable grooves are arranged on both sides of the storage grooves, a movable plate is arranged in the storage grooves, sliders are arranged on both sides of the movable plate, and the movable plate and the storage grooves are connected by the sliders and the movable grooves.

3. The segmented capacitor device according to claim 1, characterized in that: A temperature control structure is provided at one end of the first housing away from the opening; The temperature control structure includes a base, a cooling block and heat dissipation fins; the base is fitted on an end of the first housing away from the opening.

4. The segmented capacitor device according to claim 3, characterized in that: An alarm module, a remote monitoring module and a temperature detection module are also provided at one end of the first shell away from the opening. The alarm module, the remote monitoring module and the temperature detection module are connected to each other, and the alarm module, the remote monitoring module and the temperature detection module are attached to one side of the cooling block.

5. The segmented capacitor device according to claim 1, characterized in that: The control component includes an acquisition module, a low-voltage dynamic compensation control module, a compensation capacitor module, a switching module, a remote control module, a system control module, a filtering module, and an information transmission module; The acquisition module, the low-voltage dynamic compensation control module, the compensation capacitor module and the switching module are connected in sequence, and the switching module is connected to the filtering module; The remote control module and the system control module are connected in sequence, and the system control module is connected to the filter module, and the filter module is connected to the information transmission module.

6. The segmented capacitor device according to claim 1, characterized in that Two groups of insulating sleeves are arranged in the third shell, and the two groups of insulating sleeves pass through the bottom of the third shell and are connected with the second shell. The positive electrode and the negative electrode are respectively sleeved in the two groups of insulating sleeves.

7. The segmented capacitor device according to claim 1, characterized in that: It also includes a cover body, and docking ports are arranged on both sides of the cover body; The ends of the third shell are provided with docking blocks on both sides, the cover is buckled at the opening of the third shell, and the docking ports on both sides are matched and connected with the docking blocks on both sides.

8. A control method for a segmented capacitor device, based on the segmented capacitor device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, the acquisition module collects voltage data in the power system in real time; S2, the low voltage dynamic compensation control module analyzes and processes the voltage data according to the voltage data provided by the receiving acquisition module, and determines whether the power system needs reactive power compensation and the amount of compensation; the low voltage dynamic compensation control module calculates the compensation capacitor capacity that needs to be invested according to actual needs; S3, the compensation capacitor module provides reactive power compensation capacitors of corresponding capacity according to the instructions of the low voltage dynamic compensation control module; S4, the switching module is responsible for switching the capacitor in the compensation capacitor module into or out of the grid; S5, the filter module filters the harmonics and inrush current generated by the switching module; S6, remote control module allows remote users to monitor and control the system through the communication network; S7, the system control module receives the instructions from the remote control module and comprehensively controls the entire system by integrating the data from the acquisition module; S8. The information transmission module is responsible for transmitting the information generated by the acquisition module, the low-voltage dynamic compensation control module, and the remote control module to the corresponding receiving end.

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