Open type intelligent low-voltage reactive power control module with protection function

Abstract

The utility model relates to the technical field of low-voltage reactive power control modules, in particular to an open type intelligent low-voltage reactive power control module with a protection function, which comprises a main body, a control protection component is fixedly connected inside the main body, and a control component is fixedly connected at the top of the main body. According to the utility model, by using the voltage and current acquisition module and the power calculation and analysis module, the use precision and stability of the low-voltage reactive power control module are improved, the harmonic processing module is loaded, data support is provided for harmonic suppression of the low-voltage reactive power control module, the safety and reliability of the low-voltage reactive power control module are improved, and the service life of the low-voltage reactive power control module is prolonged. Electromagnetic interference in a power grid is suppressed, signal quality is improved, dynamic filtering is realized, changing harmonic current in the power grid is automatically tracked and compensated, and intelligent protection is further performed on a low-voltage reactive power control module system.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage reactive power control modules, in particular to an open intelligent low-voltage reactive power control module with a protection function. Background Art

[0002] The integrated reactive power compensation module is a new generation of reactive power compensation equipment designed for 0.4kV low-voltage distribution networks, offering high efficiency and energy savings, reducing line losses, and improving power factor and power quality. It consists of an intelligent measurement and control unit, a thyristor combination switch circuit, a line protection unit, and two delta-type or one y-type low-voltage power capacitors. It replaces conventional automatic reactive power compensation devices, which consist of separate components such as an intelligent controller, fuses, a combination switch or mechanical contactor, a thermal relay, low-voltage power capacitors, and indicator lights, all connected by wires inside and on the cabinet surface. The module features an upper and lower split-module structure. The upper section comprises the intelligent measurement and control, switch, and protection units, while the lower section consists of two delta-type or one y-type low-voltage power capacitors. The upper and lower modules are quick to assemble and disassemble, making repair and maintenance extremely convenient. Available in both shared and separate compensation configurations, the integrated module can be used alone or as a networked system.

[0003] At present, low-voltage reactive power control modules often encounter obstacles to information transmission due to external interference during operation, thereby affecting the safety of the low-voltage reactive power control module during use. Low-voltage reactive power control modules are not easy to control accurately and are prone to under-compensation or over-compensation, that is, the phase of the supply current lags behind or leads the phase of the voltage, increasing the power loss of the capacitor itself, increasing the temperature rise, and easily generating electric sparks, which in turn poses a serious safety hazard. Therefore, an open intelligent low-voltage reactive power control module with protection function is needed to improve the above problems. Utility Model Content

[0004] In order to solve the problem that the current low-voltage reactive power control module often encounters obstacles to information transmission due to external interference during operation, thereby affecting the safety of the low-voltage reactive power control module when in use, the low-voltage reactive power control module is not easy to control accurately and is prone to under-compensation or over-compensation, that is, the phase of the supply current lags behind or leads the phase of the voltage, increasing the power loss of the capacitor itself, increasing the temperature rise, and easily generating electric sparks, which in turn poses a serious safety hazard. The purpose of this utility model is to provide an open intelligent low-voltage reactive power control module with a protective function to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An open intelligent low-voltage reactive power control module with a protection function comprises a main body, a control protection component is fixedly connected to the interior of the main body, and a control display component is fixedly connected to the top of the main body;

[0007] The main body includes a shell, and a side surface of the shell is provided with a wiring port, and the wiring port is provided with two;

[0008] The control and protection component includes a mounting plate, the top of which is fixedly connected to a power supply, a processor, a power calculation and analysis module, a harmonic processing module, a voltage and current acquisition module, a password protection module, a communication module, an active power filter and a phase detection comparator.

[0009] As a preferred solution of the present invention, a threaded rod is provided inside the shell, and two threaded rods are provided. A radiator is fixedly connected to the side of the shell.

[0010] As a preferred solution of the present invention, the power supply is electrically connected to the processor, and the processor is electrically connected to the power calculation and analysis module.

[0011] As a preferred solution of the present invention, the power calculation and analysis module is electrically connected to the harmonic processing module, and the harmonic processing module is electrically connected to the voltage and current acquisition module.

[0012] As a preferred solution of the present invention, the voltage and current acquisition module is electrically connected to the password protection module, and the password protection module is electrically connected to the communication module.

[0013] As a preferred solution of the present invention, the communication module is electrically connected to the active power filter, and the active power filter is electrically connected to the phase detection comparator.

[0014] As a preferred solution of the present invention, the control display assembly includes a top plate, and the top of the top plate is fixedly connected to an OLED display screen and a position display light.

[0015] As a preferred solution of the present invention, a start switch and an operation button are provided on the top of the top plate, and a plurality of position display lights are provided.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In the utility model, by utilizing the voltage and current acquisition module and the power calculation and analysis module, the use accuracy and stability of the low-voltage reactive power control module are improved, and the harmonic processing module is installed to provide data support for the harmonic control of the low-voltage reactive power control module, thereby improving the safety and reliability of the low-voltage reactive power control module, suppressing electromagnetic interference in the power grid, improving the signal quality, realizing dynamic filtering, automatically tracking and compensating for the changing harmonic currents in the power grid, and thus performing intelligent protection for the low-voltage reactive power control module system.

[0018] 2. In the present invention, the frequency and gain of the control signal of the active power filter are used to filter out unnecessary frequencies, thereby avoiding interference of external signals on the low-voltage reactive power control module. The use of the communication module realizes remote monitoring and management of the low-voltage reactive power control module, thereby improving the automation level of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the control and protection components of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the control and display component of the present utility model.

[0023] In the figure: 1. Main body; 101. Housing; 102. Threaded rod; 103. Wiring port; 104. Radiator; 2. Control and protection assembly; 201. Mounting plate; 202. Power supply; 203. Processor; 204. Power calculation and analysis module; 205. Harmonic processing module; 206. Voltage and current acquisition module; 207. Password protection module; 208. Communication module; 209. Active power filter; 210. Phase detection comparator; 3. Control and display assembly; 301. Top plate; 302. OLED display; 303. Position display light; 304. Start switch; 305. Operation button. DETAILED DESCRIPTION

[0024] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example: See Figures 1-4The open intelligent low-voltage reactive power control module with protection function shown in the figure includes a main body 1, a control protection component 2 is fixedly connected to the interior of the main body 1, and a control display component 3 is fixedly connected to the top of the main body 1;

[0026] In this embodiment, reference Figure 1 、 Figure 2 and Figure 3 As shown, the main body 1 includes a shell 101, and a wiring port 103 is provided on the side of the shell 101. There are two wiring ports 103. The control and protection component 2 includes a mounting plate 201. The top of the mounting plate 201 is fixedly connected with a power supply 202, a processor 203, a power calculation and analysis module 204, a harmonic processing module 205, a voltage and current acquisition module 206, a password protection module 207, a communication module 208, an active power filter 209 and a phase detection comparator 210. The voltage and current acquisition module 206 and the power calculation and analysis module 204 are used to improve the use accuracy and stability of the low-voltage reactive power control module. The harmonic processing module 205 is installed to provide data support for the harmonic control of the low-voltage reactive power control module, improve the safety and reliability of the low-voltage reactive power control module, suppress electromagnetic interference in the power grid, improve the signal quality, realize dynamic filtering, automatically track and compensate for the changing harmonic currents in the power grid, and then perform intelligent protection on the low-voltage reactive power control module system.

[0027] Among them, a threaded rod 102 is provided inside the shell 101, and there are two threaded rods 102. A radiator 104 is fixedly connected to the side of the shell 101. The power supply 202 is electrically connected to the processor 203, the processor 203 is electrically connected to the power calculation and analysis module 204, the power calculation and analysis module 204 is electrically connected to the harmonic processing module 205, the harmonic processing module 205 is electrically connected to the voltage and current acquisition module 206, the voltage and current acquisition module 206 is electrically connected to the password protection module 207, the password protection module 207 is electrically connected to the communication module 208, the communication module 208 is electrically connected to the active power filter 209, and the active power filter 209 is electrically connected to the phase detection comparator 210. The active power filter 209 is used to control the frequency and gain of the signal to filter out unnecessary frequencies, thereby avoiding interference of external signals on the low-voltage reactive control module. The use of the communication module 208 realizes remote monitoring and management of the low-voltage reactive control module, thereby improving the automation level of the power system.

[0028] In this embodiment, reference Figure 1 and Figure 4As shown, the control display component 3 includes a top plate 301, the top of the top plate 301 is fixedly connected with an OLED display screen 302 and a position display light 303, the top of the top plate 301 is provided with a start switch 304 and an operation button 305, and several position display lights 303 are provided. The use of the OLED display screen 302 improves the richness and readability of the displayed information.

[0029] In this solution, an open intelligent low-voltage reactive control module with a protective function connects an external lead to the wiring port 103 when in use, and uses the OLED display screen 302 and the operation button 305 to control the low-voltage reactive control module. When performing data transmission processing, the voltage and current acquisition module 206 and the power calculation and analysis module 204 are used to improve the use accuracy and stability of the low-voltage reactive control module. The harmonic processing module 205 is installed to provide data support for the harmonic control of the low-voltage reactive control module, thereby improving the safety and reliability of the low-voltage reactive control module. The use of the communication module 208 realizes remote monitoring and management of the low-voltage reactive control module, thereby improving the intelligence of the low-voltage reactive control module.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An open intelligent low-voltage reactive power control module with a protective function, comprising a main body (1), characterized in that: A control and protection component (2) is fixedly connected to the interior of the main body (1), and a control and display component (3) is fixedly connected to the top of the main body (1); The main body (1) comprises a shell (101), a side surface of the shell (101) is provided with a connection port (103), and two connection ports (103) are provided; The control protection component (2) comprises a mounting plate (201), the top of which is fixedly connected to a power supply (202), a processor (203), a power calculation and analysis module (204), a harmonic processing module (205), a voltage and current acquisition module (206), a password protection module (207), a communication module (208), an active power filter (209), and a phase detection comparator (210).

2. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: A threaded rod (102) is provided inside the housing (101), and two threaded rods (102) are provided. A radiator (104) is fixedly connected to the side of the housing (101).

3. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: The power supply (202) and the processor (203) are electrically connected, and the processor (203) and the power calculation and analysis module (204) are electrically connected.

4. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: The power calculation and analysis module (204) is electrically connected to the harmonic processing module (205), and the harmonic processing module (205) is electrically connected to the voltage and current acquisition module (206).

5. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: The voltage and current acquisition module (206) is electrically connected to the password protection module (207), and the password protection module (207) is electrically connected to the communication module (208).

6. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: The communication module (208) is electrically connected to the active power filter (209), and the active power filter (209) is electrically connected to the phase detection comparator (210).

7. The open intelligent low-voltage reactive power control module with protection function according to claim 1, characterized in that: The control display assembly (3) comprises a top plate (301), and an OLED display screen (302) and a position display light (303) are fixedly connected to the top of the top plate (301).

8. The open intelligent low-voltage reactive power control module with protection function according to claim 7, characterized in that: A start switch (304) and an operation button (305) are provided on the top of the top plate (301), and a plurality of position display lights (303) are provided.

Images