CN107941375A - Temperature of high-tension switch cabinet exception intelligent monitoring method and system - Google Patents

Abstract

The invention discloses an intelligent monitoring method and system for abnormal temperature of a high-voltage switchgear. The temperature measuring device includes a housing, a wireless communication module, a signal processor, a CT self-power supply device and a temperature sensor; In the installation groove in the contact arm of the switch cabinet, a contact is installed in the contact arm, a heat transfer strip is arranged between the temperature sensor and the contact, one end of the heat transfer strip is in contact with the temperature sensor, and the other One end is in contact with the contact; the data collected by the temperature measuring device is encrypted and transmitted to the monitoring platform using radio frequency technology, the monitoring platform includes a program-controlled switch and a central processing unit, and the central processing unit processes and analyzes the data , the analysis results provide real-time temperature monitoring and query to individuals through the online switch and palm switch APP, and provide over-temperature alarm. The invention improves the monitoring level of the state maintenance of the switchgear, can find hidden dangers of equipment in time, and ensures the safety of the power grid.

Description

Intelligent monitoring method and system for abnormal temperature of high-voltage switchgear

Technical field:

The invention relates to a temperature monitoring method of a high-voltage switch cabinet, in particular to an intelligent monitoring method and system for abnormal temperature of a high-voltage switch cabinet.

Background technique:

With the continuous increase of power demand, higher requirements are put forward for the reliability and safety of the power system. Especially in the Zhengzhou area, there are many stations and a large number of switchgears. It is difficult to maintain power outages and there are few means of condition monitoring. Power outage maintenance is difficult to change Now that there are many important users and the demand for electricity load is large, the impact of power outages is relatively large. During long-term operation, the contact resistance of the high-voltage switch contacts in the switchgear is too large due to improper installation or aging, resulting in an increase in the temperature of the contacts, and the commonly used infrared temperature measurement technology can only receive optical signals reflected in a straight line , cannot be applied to the temperature detection of contacts in the switchgear, which has become a major hidden danger to the safe and reliable operation of the power grid.

Invention content:

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an intelligent monitoring method and system for abnormal temperature of high-voltage switchgear with reasonable design, convenient installation and accurate monitoring.

Technical scheme of the present invention is:

An intelligent monitoring method for abnormal temperature of a high-voltage switchgear, comprising the following steps:

a. Set up a temperature measuring device, which includes a housing, a wireless communication module, a signal processor, a CT self-power supply device and a temperature sensor;

b. Install the installation groove in the contact arm, fix the temperature measuring device in the installation groove, and set the heat transfer strip in the contact arm, one end of the heat transfer strip is in contact with the temperature sensor, and the other end is in contact with the contact, and the contact is installed on the tentacles;

c. Using radio frequency technology, the data collected by the temperature measuring device is encrypted and then transmitted to the monitoring platform. The monitoring platform includes a program-controlled switch and a central processor. The central processor processes and analyzes the data, and the analysis results are passed through the online switch and the palm switch. APP provides real-time temperature monitoring and query to individuals, and provides over-temperature alarm.

The over-temperature alarm includes light alarm and sound alarm, and the alarm information is directly sent to the personal monitoring machine and/or personal communication terminal. A strip-shaped groove is provided on the side wall of the contact, the end of the heat transfer strip is located in the strip-shaped groove and closely contacts with the strip-shaped groove, and the heat transfer strip adopts an elastic strip.

An intelligent monitoring system for abnormal temperature of a high-voltage switchgear, including a temperature measuring device, the temperature measuring device includes a housing, a wireless communication module, a signal processor, a CT self-power supply device, and a temperature sensor; the temperature measuring device is fixed on a high-voltage In the installation groove in the contact arm of the switch cabinet, a contact is installed in the contact arm, a heat transfer strip is arranged between the temperature sensor and the contact, one end of the heat transfer strip is in contact with the temperature sensor, and the other One end is in contact with the contact; the data collected by the temperature measuring device is encrypted and transmitted to the monitoring platform using radio frequency technology, the monitoring platform includes a program-controlled switch and a central processing unit, and the central processing unit processes and analyzes the data , the analysis results provide real-time temperature monitoring and query to individuals through the online switch and palm switch APP, and provide over-temperature alarm.

The over-temperature alarm includes light alarm and sound alarm, and the alarm information is directly sent to the personal monitoring machine and/or personal communication terminal. A strip-shaped groove is provided on the side wall of the contact, the end of the heat transfer strip is located in the strip-shaped groove and is in close contact with the strip-shaped groove, and the heat transfer strip is an elastic strip.

The beneficial effects of the present invention are:

1. The present invention adopts advanced wireless radio frequency technology to conduct wireless communication between the temperature measuring device and the data online transmission device to realize the isolation between high and low potentials on the primary side, and the temperature measuring device is embedded in the contact arm of the circuit breaker to avoid the insulation distance caused by external binding The risk of accidents caused by the drop is suitable for the modification of circuit breakers of various manufacturers.

2. The present invention improves the monitoring level of switchgear condition maintenance, can detect hidden dangers of equipment in time, ensures the safety of the power grid, and provides data support for load scheduling and equipment life cycle management through real-time temperature monitoring.

3. With an investment of 40,000 to 60,000 yuan in each substation of the present invention, a temperature measuring device is installed at the main feeder and bus tie switch, which will greatly reduce the risk of equipment burning and accidents. For the city's substations, heavy-duty stations can be transformed with emphasis, which not only reduces investment, but also avoids major load losses.

4. The present invention utilizes the excellent thermal conductivity of metal to install a temperature measuring device in the contact arm, wirelessly collects temperature data and transmits it to the background through the mobile network, and monitors the temperature of the contact. The temperature measuring device is very small and embedded in the contact arm. The external dimension is consistent with the existing contact arm, which is convenient for the transformation of old equipment.

5. The data online transmission device of the present invention encrypts the data collected by the temperature measuring device and transmits it to the server through the mobile network. The online monitoring website platform has developed an online switch and a palm switch APP to provide real-time temperature monitoring and query, and provide over-temperature alarm .

6. The invention is reasonable in design, convenient in installation and accurate in monitoring, capable of real-time temperature monitoring and over-temperature alarm, and further realizes state-of-the-art maintenance. It has a wide range of applications, is easy to popularize and implement, and has good economic benefits.

Description of drawings:

Figure 1 is a schematic structural diagram of an intelligent monitoring system for abnormal temperature of a high-voltage switchgear;

Figure 2 is the installation diagram of the temperature measuring device.

Detailed ways:

Embodiment: See Fig. 1 and Fig. 2, in the figure, 1-temperature measuring device, 2-wireless communication module, 3-signal processor, 4-CT self-power supply device, 5-temperature sensor, 6-radio frequency transmission, 7 - monitoring platform, 8 - program-controlled switch, 9 - central processing unit, 10 - personal monitoring machine, 11 - personal communication terminal, 12 - contact arm, 13 - installation hole, 14 - heat transfer strip, 15 - positioning slot.

A method and system for intelligently monitoring abnormal temperature of a high-voltage switchgear, the technical solution of which is:

a. Set the temperature measuring device 1, the temperature measuring device 1 includes a housing, a wireless communication module 2, a signal processor 3, a CT self-power supply device 4 and a temperature sensor 6;

b. Set up a mounting groove in the contact arm 12, fix the temperature measuring device 1 in the mounting groove, and set a heat transfer strip 14 in the contact arm, one end of the heat transfer strip 14 is in contact with the temperature sensor 5, and the other end is in contact with the contact Contact, the contact is installed on the contact arm 14 through the installation hole 13 and the positioning groove 15 (the contact is not shown in the figure);

c. Adopt wireless radio frequency technology to encrypt the data collected by the temperature measuring device 1 and transmit it to the monitoring platform 7. The monitoring platform 7 includes a program-controlled switch 8 and a central processing unit 9. The central processing unit 9 processes and analyzes the data, and the analysis results Provide real-time temperature monitoring and query to individuals through the online switch and palm switch APP, and provide over-temperature alarm.

Preferably, the over-temperature alarm includes light alarm and sound alarm, and the alarm information is directly sent to the personal monitoring machine 10 and/or the personal communication terminal 11 .

A strip-shaped groove is provided on the side wall of the contact, and the end of the heat transfer strip 14 is located in the strip-shaped groove and is in close contact with the strip-shaped groove. The heat-transfer strip 14 adopts an elastic strip to increase the tightness of contact and improve the monitoring effect.

The present invention adopts advanced wireless radio frequency technology to carry out wireless communication between the temperature measuring device and the data online transmission device to realize the isolation between high and low potentials on the primary side, and the temperature measuring device is embedded in the contact arm of the circuit breaker to avoid the decrease of the insulation distance caused by external binding. The risk of accidents is suitable for the modification of circuit breakers of various manufacturers.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any simple modification made according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims (6)

1. a kind of temperature of high-tension switch cabinet exception intelligent monitoring method, comprises the following steps：

Temperature measuring equipment is set, and temperature measuring equipment includes housing, wireless communication module, signal processor, CT self-power supply devices and temperature a, Spend sensor；

Mounting groove is set in contact arm, temperature measuring equipment is fixed in mounting groove b, and heat transfer bar, heat transfer are set in contact arm One end of bar is contacted with temperature sensor, the other end and contact, and contact is installed on contact arm；

C, using wireless radio-frequency, monitor supervision platform will be transferred to after the data encryption of temperature measuring equipment collection, monitor supervision platform includes Programme-controlled exchange and central processing unit, central processing unit are processed and analyze to data, its analysis result passes through web switch APP is switched with palm and provides real time temperature monitoring and inquiry to individual, and overtemperature alarm is provided.

2. temperature of high-tension switch cabinet exception intelligent monitoring method according to claim 1, it is characterized in that：Overtemperature alarm bag Light warning and audible alarm are included, warning message is sent directly on personal monitoring and control machine and/or personal telecommunication terminal.

3. temperature of high-tension switch cabinet exception intelligent monitoring method according to claim 1, it is characterized in that：In the side of contact Bar-shaped trough is opened up on wall, the end for the bar that conducts heat is located in bar-shaped trough and is in close contact with bar-shaped trough, and conduct heat strip adoption elastic strip.

4. a kind of temperature of high-tension switch cabinet exception intellectual faculties, containing temperature measuring equipment, it is characterized in that：The temperature measuring equipment Including housing, wireless communication module, signal processor, CT self-power supply devices and temperature sensor；The temperature measuring equipment is fixed on In mounting groove in high-tension switch cabinet contact arm, contact is installed, between the temperature sensor and the contact in the contact arm Heat transfer bar is provided with, one end of the heat transfer bar is contacted with temperature sensor, the other end and the contact；The thermometric dress Put and be transferred to monitor supervision platform using wireless radio-frequency after the data encryption of collection, the monitor supervision platform include programme-controlled exchange and Central processing unit, the central processing unit are processed and analyze to data, its analysis result is opened by web switch and palm Close APP and provide real time temperature monitoring and inquiry to individual, and overtemperature alarm is provided.

5. temperature of high-tension switch cabinet exception intellectual faculties according to claim 4, it is characterized in that：The overtemperature report Police includes light warning and audible alarm, and warning message is sent directly on personal monitoring and control machine and/or personal telecommunication terminal.

6. temperature of high-tension switch cabinet exception intellectual faculties according to claim 4, it is characterized in that：The contact Bar-shaped trough is opened up on side wall, the end of the heat transfer bar is located in the bar-shaped trough and is in close contact with the bar-shaped trough, described Conduct heat strip adoption elastic strip.