CN107171444A - A kind of real-time monitoring system of low-voltage distribution cabinet - Google Patents

Abstract

The invention discloses a kind of low-voltage distribution cabinet real-time monitoring system, the system includes：Acquisition module, light number converter, microprocessor, power module, communication module, controller；Acquisition module is used to gather temperature information, voltage, power and electric energy, the current information in low-voltage distribution cabinet；Light number converter is used to optical information being converted to data signal；Microprocessor generates the temperature information and warning message of low-voltage distribution cabinet according to data signal；Power module is used to change way to take power；Communication module, which is used to set up with external equipment by wireless transceiver, to communicate；Controller is used to transmit the current operating conditions of acquired low-voltage distribution cabinet to backstage main website.The monitoring system of the present invention can monitor the temperature in low-voltage distribution cabinet in real time, and when occurring too high temperature or operation power abnormal failure, send in time and remind and alarm, saved the cost of artificial Measuring error.

Description

A real-time monitoring system for low-voltage power distribution cabinet

technical field

The invention relates to the field of power systems, in particular to a real-time monitoring system for a low-voltage power distribution cabinet.

Background technique

In the power system, the safety and reliability of power equipment is an important part of ultra-large-scale power transmission and distribution and grid security. Among them, the power switch distribution cabinet is an important equipment widely used in the power transmission and distribution system, and its safety and reliability are subject to more and more There are more and more concerns that during the long-term operation of the equipment, the joint parts of the switchgear, the conductive part of the disconnector and other parts will generate heat due to excessive contact resistance due to poor manufacturing, transportation, installation and aging. If the temperature of these heating parts cannot Accurate detection, failure to timely maintenance, will lead to burning switch distribution cabinet.

The current monitoring of the internal temperature rise of the power distribution cabinet is still at the stage of manual inspection. The current main method is to manually open the power distribution cabinet at regular intervals, use infrared temperature detectors to measure the temperature of the main terminals of the power distribution cabinet and For the record, the main problem with this method is that the temperature measurement of the power distribution cabinet needs to be opened manually, which may cause personal injury, is unsafe, and the operation is more complicated. Therefore, it is necessary to provide a system for effectively monitoring the temperature and operating environment of the power distribution cabinet, which can automatically monitor the temperature, current, voltage and other data in the power distribution cabinet, and send an alarm reminder in time when the temperature is too high to solve the problem. the technical problems mentioned above.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a real-time monitoring system of the low-voltage power distribution cabinet, which can monitor the temperature in the low-voltage power distribution cabinet in real time, and when the temperature is too high or the power operation is abnormal, it will promptly send out a reminder and Alarm, delimiting the danger level for the alarm information, greatly saving manpower and material resources, and saving the cost of manual inspection and maintenance.

The present invention solves technical problem and adopts following technical scheme:

A real-time monitoring system for a low-voltage power distribution cabinet, including: an acquisition module, an optical-to-digital converter, a microprocessor, a power module, a communication module, and a controller;

The acquisition module includes: a temperature acquisition unit, used to collect temperature information in the low-voltage power distribution cabinet, and convert the temperature information into optical information; a voltage transformer, used to measure the voltage, power and electric energy of the line in the low-voltage power distribution cabinet; current Transformer, used to measure the current information in the low-voltage power distribution cabinet;

An optical-to-digital converter, used to convert the optical information converted by the temperature acquisition unit into a digital signal, and used for high temperature alarm;

a microprocessor, configured to generate temperature information and alarm information of the low-voltage power distribution cabinet according to the digital signal;

The power module is used to convert the power-taking mode of voltage transformer, current transformer or solar energy, and store the electric energy in the battery to provide electric energy for the controller;

A communication module, configured to establish communication with an external device through a wireless transceiver;

The controller interacts with the acquisition module, the optical-to-digital converter, the microprocessor, the power supply module, and the communication module respectively, and is used to transmit the acquired current operating status of the low-voltage power distribution cabinet to the background master station.

Further, the temperature acquisition unit includes a plurality of temperature sensors, each temperature sensor corresponds to a fixed monitoring point, monitors the air temperature corresponding to the fixed monitoring point in real time, and sends the monitored data to the optical-to-digital converter.

Further, the background master station is provided with a threshold unit, which is used to set and store the threshold of the air temperature and the voltage, power, electric energy, and current thresholds of the low-voltage power distribution cabinet.

Further, the alarm information includes one or a combination of over-temperature alarm, high temperature alarm, and rapid temperature rise alarm.

Further, the monitoring system further includes: a display module, electrically connected to the controller, for displaying the information data collected by the collection module.

Further, the signal mode of the wireless transceiver is 3G, 4G or Wi-Fi.

Further, the monitoring system further includes: an alarm unit, configured to send out an alarm sound according to the current operating status of the low-voltage power distribution cabinet acquired by the controller, and to light up signal lights of different colors according to the danger level.

Further, the power module is also used for activating the storage battery.

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

(1) The real-time monitoring system of the low-voltage power distribution cabinet of the present invention can monitor the temperature in the low-voltage power distribution cabinet in real time, and when the temperature is too high or the power operation is abnormal, it will send a reminder and alarm in time, and the alarm information is defined The danger level greatly saves manpower and material resources, and saves the cost of manual inspection and maintenance.

(2) The acquisition module of the present invention includes a temperature acquisition unit, a voltage transformer, and a current transformer, capable of real-time monitoring of air temperature, voltage, and current-related data at fixed monitoring points related to the power distribution cabinet, and integrated by the microprocessor and the controller. Through analysis and processing, the real-time working status of the low-voltage power distribution cabinet is obtained and transmitted to the background master station in time, so that relevant personnel can understand the situation and take timely measures for maintenance management.

(3) The temperature information of the present invention is converted into a digital signal by an optical-to-digital converter, and displayed on the display module in real time. By converting the temperature information into optical information, the temperature of the power distribution cabinet is tested online to obtain accurate temperature data. , reducing the interval time of temperature monitoring, making temperature measurement more timely and convenient, and avoiding the situation that the switch distribution cabinet is burned.

Description of drawings

Fig. 1 is the module schematic diagram of the real-time monitoring system of the low-voltage power distribution cabinet of embodiment 1;

Fig. 2 is a block diagram of the real-time monitoring system of the low-voltage power distribution cabinet of the second embodiment.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

Example 1

As shown in Figure 1, a real-time monitoring system for a low-voltage power distribution cabinet in this embodiment includes: an acquisition module 100, an optical-to-digital converter 200, a microprocessor 300, a power module 400, a communication module 500, a controller 600, and a background Master station 700.

The acquisition module 100 includes: a temperature acquisition unit 110, used to collect temperature information in the low-voltage power distribution cabinet, and convert the temperature information into optical information; a voltage transformer 120, used to measure the voltage, power and voltage of the line in the low-voltage power distribution cabinet. Electric energy; the current transformer 130 is used to measure the current information in the low-voltage power distribution cabinet.

The optical-to-digital converter 200 is used to convert the optical information converted by the temperature acquisition unit into a digital signal, and is used for high temperature alarm.

The microprocessor 300 is configured to generate temperature information and alarm information of the low-voltage power distribution cabinet according to the digital signal.

The power supply module 400 is used to convert the power acquisition mode of the voltage transformer 120, the current transformer 130 or solar energy, and store the electric energy in the storage battery to provide electric energy for the controller.

The communication module 500 is configured to establish communication with an external device 800 through a wireless transceiver.

The controller 600 interacts with the acquisition module 100, the optical-to-digital converter 200, the microprocessor 300, the power module 400, and the communication module 500 respectively, and is used to transmit the acquired current operating status of the low-voltage power distribution cabinet to the background Master station 700.

The real-time monitoring system of the low-voltage power distribution cabinet in this embodiment can monitor the temperature in the low-voltage power distribution cabinet in real time, and when the temperature is too high or the power operation is abnormal, it will send a reminder and alarm in time, and define the danger level for the alarm information , greatly saving manpower and material resources, saving the cost of manual inspection and maintenance.

Example 2

As shown in Figure 2, a real-time monitoring system for a low-voltage power distribution cabinet in this embodiment includes: an acquisition module 100, an optical-to-digital converter 200, a microprocessor 300, a power module 400, a communication module 500, a controller 600, and a background Master station 700 , external device 800 , display module 900 , and alarm unit 1000 .

The acquisition module 100 includes: a temperature acquisition unit 110, used to collect temperature information in the low-voltage power distribution cabinet, and convert the temperature information into optical information; a voltage transformer 120, used to measure the voltage, power and voltage of the line in the low-voltage power distribution cabinet. Electric energy; the current transformer 130 is used to measure the current information in the low-voltage power distribution cabinet. Wherein, the temperature acquisition unit 110 includes a plurality of temperature sensors 111 , each temperature sensor 111 corresponds to a fixed monitoring point, monitors the air temperature corresponding to the fixed monitoring point in real time, and sends the monitored data to the optical-to-digital converter 200 . The temperature sensor 111 senses the temperature inside the power distribution cabinet, and when the temperature is too high, the operation of the equipment is adjusted to cool down the inside of the power distribution cabinet.

The optical-to-digital converter 200 is used to convert the optical information converted by the temperature acquisition unit into a digital signal, and is used for high temperature alarm.

The microprocessor 300 is configured to generate temperature information and alarm information of the low-voltage power distribution cabinet according to the digital signal. The alarm information includes one or a combination of over-temperature alarm, high temperature alarm, and rapid temperature rise alarm.

The power supply module 400 is used to convert the power acquisition mode of the voltage transformer 120, the current transformer 130 or solar energy, and store the electric energy in the storage battery to provide electric energy for the controller.

The communication module 500 is configured to establish communication with an external device through a wireless transceiver. The signal mode of the wireless transceiver is 3G, 4G or Wi-Fi.

The controller 600 interacts with the acquisition module 100, the optical-to-digital converter 200, the microprocessor 300, the power module 400, and the communication module 500 respectively, and is used to transmit the acquired current operating status of the low-voltage power distribution cabinet to the background Master station 700.

The background master station 700 is provided with a threshold unit, which is used to set and store the threshold of air temperature and the voltage, power, electric energy, and current thresholds of the low-voltage power distribution cabinet. Among them, the threshold unit can set user permissions. The roles of permissions include: super administrator, who has the management authority of all users, and is used to perform system core parameters, operating parameters, map editing, temperature calibration, alarm settings, and alarm settings. Processing settings; administrators, administrators have the management rights of users at the same level and lower levels, and are used to set operating parameters, map editing, temperature calibration, alarm settings, and alarm processing; general operators, general operators have no management rights, It is used for alarm processing and monitoring system report viewing.

The display module 900 is electrically connected with the controller 600 and used for displaying the information data collected by the collection module 100 . The display module 900 displays the sites in the monitoring area with an intuitive graphical interface, and displays the detailed temperature information of the relevant sites in the form of an attribute table, which is convenient and intuitive to view the temperature information of the monitoring equipment. The alarm unit 1000 is configured to send out an alarm sound according to the current operating status of the low-voltage power distribution cabinet obtained by the controller and to light up signal lights of different colors according to the danger level. Specifically, the alarm unit is an ordinary electric bell, and the alarm unit will send out a voice warning of "the temperature is too high, please pay attention!". Among them, the system also includes an air circulation unit, which uses a micro fan to drive the air circulation in the cabinet.

The acquisition module of this embodiment includes a temperature acquisition unit, a voltage transformer, and a current transformer, capable of real-time monitoring of air temperature, voltage, and current related data at fixed monitoring points related to the power distribution cabinet, and comprehensive analysis and processing by the microprocessor and the controller , get the real-time working status of the low-voltage power distribution cabinet, and transmit it to the background master station in time, so that relevant personnel can understand the situation and take timely measures for maintenance management. The temperature information is converted into a digital signal by an optical-to-digital converter and displayed on the display module in real time. By converting the temperature information into optical information, the temperature of the power distribution cabinet is tested online to obtain accurate temperature data and reduce the monitoring temperature. The interval time makes the temperature measurement more timely and convenient, and avoids the situation that the switch distribution cabinet is burned.

The above descriptions are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. a kind of low-voltage distribution cabinet real-time monitoring system, it is characterised in that including：Acquisition module, light number converter, microprocessor Device, power module, communication module, controller；

Acquisition module includes：Temperature collecting cell, is changed for collecting the temperature information in low-voltage distribution cabinet, and by temperature information For optical information；Voltage transformer, for measuring the voltage of circuit, power and electric energy in low-voltage distribution cabinet；Current transformer, is used for Measure the current information in low-voltage distribution cabinet；

Light number converter, the optical information for the temperature collecting cell to be changed is converted to data signal, and for high temperature report It is alert；

Microprocessor, temperature information and warning message for generating low-voltage distribution cabinet according to the data signal；

Power module, is changed, and electric energy is deposited for the way to take power to voltage transformer, current transformer or solar energy Battery is stored in, electric energy is provided for controller；

Communication module, communicates for being set up by wireless transceiver with external equipment；

Controller, is interacted with the acquisition module, light number converter, microprocessor, power module, communication module respectively, For the current operating conditions of acquired low-voltage distribution cabinet to be transmitted to backstage main website.

2. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the temperature collecting cell bag Include multiple temperature sensors, one stationary monitoring point of each temperature sensor correspondence, the sky of the corresponding stationary monitoring point of monitoring in real time Temperature degree, and the data monitored are sent to light number converter.

3. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the backstage main website is provided with threshold Value cell, for setting and storing the threshold value of air themperature and the voltage of low-voltage distribution cabinet, power, electric energy, current threshold.

4. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the warning message includes super Warm alarm, high temperature alarm, the one or more of combinations being rapidly heated in alarm.

5. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the monitoring system is also wrapped Include：Display module, is electrically connected with the controller, the information data for showing acquisition module collection.

6. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the letter of the wireless transceiver Number pattern is 3G, 4G or Wi-Fi.

7. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the monitoring system is also wrapped Include：Alarm unit, the current operating conditions of the low-voltage distribution cabinet for being obtained according to controller send alarm sound and according to Danger classes reveals different colours signal lamp.

8. low-voltage distribution cabinet real-time monitoring system according to claim 1, it is characterised in that the power module is additionally operable to Activation process is carried out to the battery.