Monitoring device for intelligent capacitor switching test

Abstract

The utility model belongs to the technical field of power control, and provides a monitoring device for a switching test of an intelligent capacitor, which comprises a main control unit, a communication unit, a display unit and an alarm unit, and is characterized in that the communication unit is in communication connection with the main control unit and is used for sending parameter data acquired by a microprocessor of the intelligent capacitor to the main control unit in real time; the parameter data of the intelligent capacitor comprises working voltage, current, capacity of the intelligent capacitor and inrush current generated when the intelligent capacitor is switched; the display unit is in communication connection with the main control unit and is used for displaying data sent by the main control unit; the alarm unit is in communication connection with the main control unit and is controlled by the main control unit to send out an alarm signal. According to the utility model, when the intelligent capacitor is subjected to a switching test, the main control unit reads parameter data of the intelligent capacitor based on the communication unit and visually displays the parameter data through the display unit; when a fault occurs, the alarm unit sends out an alarm signal, and a tester can quickly position the fault capacitor.

Description

Technical Field

[0001] The utility model relates to the technical field of power control, in particular to a monitoring device for switching tests of intelligent capacitors. Background Art

[0002] Smart capacitors are a new generation of compensation devices that integrate advanced technologies such as power electronics, network control, automation control, and power capacitors. They are primarily used in factory power distribution systems and other industrial equipment. They meet the high demands of modern power grids for reactive power compensation by reducing line losses, increasing power factor, improving power quality, and reducing energy consumption.

[0003] Smart capacitors not only perform basic capacitor functions but also possess intelligent control capabilities. Equipped with sensors and microprocessors, they can monitor electrical parameters such as voltage, current, and power factor, enabling remote control and monitoring. Smart capacitors can be used individually or in conjunction with multiple units, replacing conventional automatic reactive power compensation devices consisting of wire-connected components such as an intelligent controller, fuses, compound switches or mechanical contactors, thermal relays, low-voltage power capacitors, and indicator lights. They can help users obtain electrical information more accurately and reliably, reducing electricity costs and improving efficiency and safety.

[0004] However, when used on-site, smart capacitors are prone to failure, resulting in high failure rates, which can cause substandard power factors and lead to fines. These issues are often caused by a lack of rigorous data measurement and control of smart capacitors, leading to the release of defective products into the market.

[0005] Currently, when smart capacitors are tested for switching in factories, the quality of the smart capacitors is usually determined by manually observing whether the load indicator light is on when the capacitor is switched on. This method makes it impossible to visually check the capacitor switching status and, therefore, it is impossible to accurately judge the quality of the product. Utility Model Content

[0006] In view of the defects in the prior art, the present invention provides a monitoring device for switching test of intelligent capacitors to solve the problem that when the intelligent capacitors are currently switched in the factory, manual work cannot accurately judge the switching status of the capacitors.

[0007] The utility model provides a monitoring device for intelligent capacitor switching test, comprising:

[0008] Main control unit;

[0009] a communication unit, communicatively connected to the main control unit, for sending parameter data collected by the microprocessor of the smart capacitor to the main control unit in real time; the parameter data of the smart capacitor includes operating voltage, current, the capacity of the smart capacitor itself, and inrush current generated when the smart capacitor is switched on and off;

[0010] a display unit, communicatively connected to the main control unit, and configured to display data sent by the main control unit;

[0011] The alarm unit is in communication with the main control unit and is controlled by the main control unit to send out an alarm signal.

[0012] It can be seen from the above technical solution that the monitoring device for the switching test of the intelligent capacitor provided by the utility model, when the intelligent capacitor is switched on and off, the main control unit reads the voltage, current, the intelligent capacitor's own capacity and the inrush current during switching and other parameter data of the intelligent capacitor based on the communication unit, and displays them intuitively based on the display unit; when a fault occurs, the tester can quickly know and locate the faulty capacitor, avoiding the problem of being unable to accurately judge the product quality by manually observing whether the load indicator light is on when the capacitor is switched on and off.

[0013] Optionally, a power supply unit is further included, which is externally connected to a 220V mains power supply and is used to convert alternating current into direct current and supply power to the main control unit.

[0014] Optionally, it also includes a temperature sensor and a fan start-stop unit, and the temperature sensor and the fan start-stop unit are both communicatively connected to the main control unit; the temperature sensor collects the temperature of the monitoring device for the intelligent capacitor switching test, and when the main control unit receives the temperature abnormality obtained by the temperature sensor, it controls the fan start-stop unit to perform the fan start-stop operation.

[0015] Optionally, the fan is a DC axial flow fan.

[0016] Optionally, the communication unit is an RS485 bus.

[0017] Optionally, the display unit is a digital tube.

[0018] Optionally, the alarm unit is an active buzzer, and the active buzzer is connected to the control port of the main control unit.

[0019] By adopting the above technical solution, this application has the following technical effects:

[0020] The utility model provides a monitoring device for switching test of intelligent capacitors. When the intelligent capacitor is switched on and off, the main control unit reads parameter data such as the voltage, current, capacity and inrush current value of the intelligent capacitor through the communication unit, and displays them visually through the display unit. When a fault occurs, the alarm unit is driven by the main control unit to send an alarm signal. The tester can quickly locate the faulty capacitor according to the parameter data displayed on the display unit, avoiding the problem of being unable to accurately judge the quality of the intelligent capacitor by manually observing whether the load indicator light is on when the capacitor is switched on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0022] Figure 1 A schematic diagram of a monitoring device for intelligent capacitor switching test provided by an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1- Main control unit; 2- Communication unit; 3- Display unit; 4- Alarm unit; 5- Power supply unit; 6- Fan start and stop unit; 7- Intelligent capacitor. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0027] In the description of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in the present invention, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0028] like Figure 1As shown, this embodiment provides a monitoring device for switching tests of intelligent capacitors, including a main control unit 1, a communication unit 2, a display unit 3 and an alarm unit 4. The communication unit 2 is communicatively connected to the main control unit 1, and is used to send parameter data collected by the microprocessor of the intelligent capacitor 7 to the main control unit 1 in real time; the parameter data of the intelligent capacitor 7 includes the operating voltage, current, the capacity of the intelligent capacitor 7 itself, and the inrush current generated when the intelligent capacitor 7 is switched; the display unit 3 is communicatively connected to the main control unit 1, and is used to display the data sent by the main control unit 1; the alarm unit 4 is communicatively connected to the main control unit 1, and the main control unit 1 controls the issuance of an alarm signal.

[0029] The intelligent capacitor switching test and monitoring device provided in this embodiment, when performing a switching test on the intelligent capacitor 7, the communication unit 2 reads parameter data of the intelligent capacitor 7, such as voltage, current, capacity, and inrush current during switching, and sends the data to the main control unit 1, and intuitively displays the specific parameter data through the display unit 3; when a fault occurs, the alarm unit 4 sends an alarm signal, and the tester can quickly locate the faulty capacitor, avoiding the problem of manually observing whether the load indicator light is on during capacitor switching to determine the quality of the intelligent capacitor, which cannot accurately determine the product quality.

[0030] It should be noted that those skilled in the art may further determine the attenuation rate of the smart capacitor based on the acquired parameter data of the smart capacitor 7 , thereby determining the stability of the capacitor.

[0031] In one embodiment, the main control unit 1 uses an MCU chip of model STM32F103RCT6, the communication unit 2 is an RS485 bus, and the display unit 3 is a 3-inch digital tube.

[0032] In one embodiment, the alarm unit 4 is an active buzzer, which is connected to the control port of the main control unit 1 .

[0033] like Figure 1 As shown, the device further includes a power supply unit 5, which is connected to a 220V mains power supply and is used to convert AC power to DC power and supply power to the main control unit 1. Specifically, the power supply unit 5 can be connected to a power supply chip via a transformer. The power supply chip can provide multiple DC voltages to provide power supply voltages to other units in the device, such as the main control unit 1. The specific implementation of the power supply unit 5 can be achieved with reference to existing technologies. The power supply chip can also be selected based on actual needs and is not specifically limited in this embodiment.

[0034] Optionally, it also includes a temperature sensor and a fan start-stop unit 6, which are both communicatively connected to the main control unit 1; the temperature sensor collects the temperature inside the monitoring device for the switching test of the intelligent capacitor 7, and when the main control unit 1 receives the temperature abnormality obtained by the temperature sensor, it controls the fan start-stop unit 6 to perform the fan start-stop operation.

[0035] In one embodiment, the temperature sensor may be an NTC thermistor, and the fan may be a DC axial flow fan.

[0036] In the monitoring device for switching tests of smart capacitors provided in this embodiment, when the smart capacitor 7 is subjected to switching tests, the main control unit 1 reads parameter data of the smart capacitor 7, such as voltage, current, capacity, and inrush current during switching, through the communication unit 2, and intuitively displays the data through the display unit 3, making it convenient for the tester to observe the real-time data of the smart capacitor 7 during the test. When a fault occurs, the alarm unit 4 is driven by the main control unit 1 to send an alarm signal, allowing the tester to quickly locate the faulty capacitor, thus avoiding the problem of being unable to accurately judge the product quality by manually observing whether the load indicator light is on during capacitor switching and determining the quality of the smart capacitor.

[0037] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A monitoring device for intelligent capacitor switching test, characterized in that: include: Main control unit; A communication unit, communicatively connected to the main control unit, for sending parameter data collected by the microprocessor of the smart capacitor to the main control unit in real time; The parameter data of the smart capacitor include the operating voltage, current, the capacity of the smart capacitor itself and the inrush current when the smart capacitor is switched on and off; a display unit, communicatively connected to the main control unit, and configured to display data sent by the main control unit; The alarm unit is in communication with the main control unit and is controlled by the main control unit to send out an alarm signal.

2. The monitoring device for switching test of intelligent capacitors according to claim 1, characterized in that: It also includes a power supply unit, which is externally connected to a 220V mains power supply. The power supply unit is used to convert alternating current into direct current and supply power to the main control unit.

3. The monitoring device for switching test of intelligent capacitors according to claim 1, characterized in that: It also includes a temperature sensor and a fan start-stop unit, both of which are communicatively connected to the main control unit; the temperature sensor collects the temperature of the monitoring device for the intelligent capacitor switching test, and when the main control unit receives the temperature abnormality obtained by the temperature sensor, it controls the fan start-stop unit to perform the fan start-stop operation.

4. The monitoring device for switching test of intelligent capacitors according to claim 3, characterized in that: The fan is a DC axial flow fan.

5. The monitoring device for switching test of intelligent capacitors according to claim 1, characterized in that: The communication unit is an RS485 bus.

6. The monitoring device for switching test of intelligent capacitors according to claim 1, characterized in that: The display unit is a digital tube.

7. The monitoring device for switching test of intelligent capacitors according to claim 1, characterized in that: The alarm unit is an active buzzer, and the active buzzer is connected to the control port of the main control unit.

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