CN205982461U - Low -voltage distribution is electric detection means for cabinet - Google Patents

Abstract

The utility model discloses a low-voltage power distribution cabinet electricity detection device, a detection unit, a signal acquisition unit and an automatic power-off unit. The detection unit includes a leakage sensor, a temperature sensor, a voltage sensor and a current sensor. The output end is electrically connected to a processing unit, the automatic power-off unit includes a tripper and a drive circuit, the output end of the controller is electrically connected to a wireless communication unit, and the output end of the wireless communication unit is electrically connected to a Remote control unit; analyze and judge whether the current at that time conforms to the characteristics of the current when an arc fault occurs, and when it is judged that an arc fault has occurred, a fault signal is given, and the driving circuit drives the tripper to disconnect the circuit in time; the utility model has a reasonable design, It is convenient for detection and monitoring, can effectively avoid the danger caused by arc fault, and is suitable for popularization and production.

Description

A low-voltage power distribution cabinet power detection device

technical field

The utility model belongs to the technical field of electric power equipment, in particular to a low-voltage power distribution cabinet electricity detection device.

Background technique

At present, there are few testing equipment applied to electrical equipment, and it is difficult to fully reflect various operating parameters of low-voltage electrical equipment, and each testing equipment operates independently, and does not focus on monitoring the power operating conditions and safe operating conditions of the equipment itself. Personnel need to go to the site for inspections every day. This detection method is not only time-consuming and laborious, but also cannot realize real-time monitoring of electrical equipment. The rated current of the low-voltage distribution cabinet is AC 50Hz, and the rated voltage is 380v. The power distribution system is used as power, lighting and For power conversion and control of power distribution, although the quality and performance of equipment and switching devices have been continuously improved, and they have passed type tests, it is still impossible to completely avoid faults in equipment. Among all faults, accidents caused by arc faults account for about 50%, and the degree of damage caused by arc faults is the most serious.

Utility model content

The purpose of this utility model is to provide a low-voltage power distribution cabinet electricity detection device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a low-voltage power distribution cabinet electricity detection device, including a processing unit, a detection unit, a signal acquisition unit and an automatic power-off unit, and the output and output ends of the detection are electrically connected At the input end of the processing unit, the processing unit includes an A/D converter and a controller, and the A/D converter is electrically connected to the controller, and the information collection unit includes a current transformer and a signal conditioning circuit, and the current The transformer is electrically connected to the signal conditioning circuit, the output end of the signal conditioning circuit is electrically connected to the input end of the A/D converter, the automatic power-off unit includes a tripper and a driving circuit, and the tripper is connected to the The drive circuit is electrically connected, the input end of the drive circuit is electrically connected to the output end of the processing unit, the output end of the controller is electrically connected to a wireless communication unit, and the output end of the wireless communication unit is connected to the remote control unit The input terminals of the processing unit are connected to the signal, the four output terminals of the processing unit are electrically connected to the memory, the display, the alarm device and the communication interface, and the output terminals of the communication interface are electrically connected to the monitoring computer.

Preferably, the wireless communication unit is wirelessly connected to a cloud computer.

Preferably, the communication interface is an RS485 communication interface.

Preferably, the wireless communication unit adopts a high-frequency radio frequency module, a GPRS module, a 4G communication module or a WIFI module.

Preferably, the detection unit includes a leakage sensor, a temperature sensor, a voltage sensor and a current sensor.

The technical effects and advantages of the utility model: the low-voltage power distribution cabinet power detection device can collect the operating status information of the power-consuming equipment by setting leakage sensors, temperature sensors, voltage sensors and current sensors around the low-voltage power-consuming equipment, and Sending this information to the processing unit for storage and display can realize comprehensive monitoring of various operating states of electrical equipment, improving the accuracy and reliability of electrical equipment monitoring. At the same time, the processing unit uses wireless communication units and cloud computers. Connected to realize remote online monitoring of the operating status of low-voltage electrical equipment. The processing unit is also connected to the monitoring computer through the communication interface to realize online monitoring and self-control management of the operating status of electrical equipment; parameters of electrical equipment at different time periods can be displayed through the display It is displayed to provide a basis for the maintenance of the staff and the scheduling of low-voltage electrical equipment; the signal conditioning circuit processes the information collected by the current transformer and sends it to the processing unit for analysis, and through the analysis to determine whether the current current meets the requirements when an arc fault occurs. When it is judged that an arc fault has occurred, a fault signal is given, and the driving circuit drives the release to disconnect the circuit in time; the utility model has a reasonable design, is convenient for detection and monitoring, and can effectively avoid the danger caused by the arc fault , suitable for promotion and production.

Description of drawings

Fig. 1 is a schematic diagram of a circuit principle module of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a low-voltage power distribution cabinet electricity detection device as shown in Figure 1, including a processing unit, a detection unit, a signal acquisition unit and an automatic power-off unit, and the detection unit includes a leakage sensor, a temperature sensor, a voltage sensor and current sensor, the output end of the detection is electrically connected to the input end of the processing unit, the processing unit includes an A/D converter and a controller, and the A/D converter is electrically connected to the controller, so The information collection unit includes a current transformer and a signal conditioning circuit, and the current transformer is electrically connected to the signal conditioning circuit, the output end of the signal conditioning circuit is electrically connected to the input end of the A/D converter, and the automatic disconnection The electrical unit includes a release and a drive circuit, and the release is electrically connected to the drive circuit, the input end of the drive circuit is electrically connected to the output end of the processing unit, and the output end of the controller is electrically connected to a wireless A communication unit, the wireless communication unit is wirelessly connected to a cloud computer, and the wireless communication unit adopts a high-frequency radio frequency module, a GPRS module, a 4G communication module or a WIFI module, and the output end of the wireless communication unit is connected to the input end of the remote control unit For signal connection, the four output terminals of the processing unit are electrically connected with a memory, a display, an alarm device and a communication interface, the communication interface is an RS485 communication interface, and the output terminals of the communication interface are electrically connected with a monitoring computer.

The low-voltage power distribution cabinet power detection device can collect the operating status information of the power-consuming equipment by setting leakage sensors, temperature sensors, voltage sensors and current sensors around the low-voltage power-consuming equipment, and send this information to the processing unit for storage. and display, can realize comprehensive monitoring of various operating states of electrical equipment, improve the accuracy and reliability of electrical equipment monitoring, and at the same time, the processing unit is connected with the cloud computer through a wireless communication unit, which can realize the operation of low-voltage electrical equipment The remote online monitoring of the status, the processing unit is also connected to the monitoring computer through the communication interface to realize the online monitoring and self-control management of the operating status of the electrical equipment; Provide basis for the scheduling of low-voltage electrical equipment; the signal conditioning circuit processes the information collected by the current transformer and sends it to the processing unit for analysis. Through analysis, it is judged whether the current current conforms to the characteristics of the current when an arc fault occurs, and it is judged that an arc fault has occurred When an arc fault occurs, a fault signal is given, and the driving circuit drives the tripper to disconnect the circuit in time; the utility model has a reasonable design, is convenient for detection and monitoring, can effectively avoid the danger caused by the arc fault, and is suitable for popularization and production.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (5)

1. a kind of low-voltage distribution cabinet electric detection means, including processing unit, detector unit, signal gathering unit with automatically power off Unit it is characterised in that：Described detection go out the input that outfan is electrically connected at processing unit, described processing unit includes A/D converter and controller, and A/D converter and controller electric connection, described signal gathering unit includes current transformer And signal conditioning circuit, and current transformer and signal conditioning circuit be electrically connected with, the outfan of described signal conditioning circuit with The input of A/D converter is electrically connected with, and the described unit that automatically powers off includes electrical apparatus release and drive circuit, and electrical apparatus release and driving Circuit is electrically connected with, and the input of described drive circuit is electrically connected with the outfan of processing unit, the output of described controller End is electrically connected with wireless communication unit, and the outfan of described wireless communication unit is connected with the input end signal of remote control unit Connect, four outfans of described processing unit are electrically connected with memorizer, display, alarm device and communication interface, described logical The outfan of communication interface is electrically connected with monitoring computer.

2. a kind of low-voltage distribution cabinet electric detection means according to claim 1 it is characterised in that：Described radio communication list Unit is wirelessly connected with high in the clouds computer.

3. a kind of low-voltage distribution cabinet electric detection means according to claim 1 it is characterised in that：Described communication interface is RS485 communication interface.

4. a kind of low-voltage distribution cabinet electric detection means according to claim 1 it is characterised in that：Described radio communication list Unit adopts high-frequency radio frequency module or GPRS module or 4G communication module or WIFI module.

5. a kind of low-voltage distribution cabinet electric detection means according to claim 1 it is characterised in that：Described detector unit bag Include electricity leakage sensor, temperature sensor, voltage sensor and current sensor.