CN215769514U - Temperature monitoring system of ring main unit - Google Patents
Temperature monitoring system of ring main unit Download PDFInfo
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- CN215769514U CN215769514U CN202122050522.0U CN202122050522U CN215769514U CN 215769514 U CN215769514 U CN 215769514U CN 202122050522 U CN202122050522 U CN 202122050522U CN 215769514 U CN215769514 U CN 215769514U
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- main unit
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- analog converter
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Abstract
The utility model discloses a temperature monitoring system of a ring main unit, which comprises a signal transmission processing system and is characterized in that: the signal transmission processing system comprises a sensor, the sensor is connected with a digital-to-analog converter, the digital-to-analog converter is connected with a digital signal processor, the digital signal processor is connected with a ring main unit, the ring main unit transmits signals to a remote computer terminal, and the digital-to-analog converter is connected with an environment management system. The utility model has the advantages that: digital control system makes the installation simple, realizes long-range real time monitoring, and signal transmission is stable to have the audible and visual alarm function, prevent that monitoring personnel from neglecting important information, can be targeted administer looped netowrk cabinet internal environment, improve equipment life reduces the running cost, can carry out early warning in advance, prevents to enlarge the loss.
Description
Technical Field
The utility model relates to an electrical equipment monitoring system, in particular to a temperature monitoring system of a ring main unit.
Background
In order to increase the reliability of the power supply, the user is provided with power from two directions, usually by connecting the power supply networks in a ring. This power supply mode is referred to as ring network power supply for short. In an alternating current 10kV power distribution system of industrial and mining enterprises, residential districts, ports, high-rise buildings and the like, a high-voltage loop is usually controlled by a load switch or a vacuum contactor and is provided with a high-voltage fuse for protection because the load capacity is not large. The system usually adopts the ring network to supply power, and the high tension switchgear that uses is generally habitually called looped netowrk cabinet. In addition to supplying power to the distribution substation, the high-voltage bus of the ring main unit needs to pass through current of the ring power supply network (i.e. current supplied to an adjacent distribution substation through the bus of the distribution substation), so that the section of the high-voltage bus of the ring main unit is selected according to the sum of the load current of the distribution substation and the ring network through current to ensure that the high-voltage bus in operation does not overload.
Due to various reasons, the cable joint in the ring main unit is easy to generate heat, the operation safety of the ring main unit and even the operation safety of the whole power grid can be influenced, the cable joint is seriously oxidized due to overhigh temperature, the service life of the cable is shortened, the explosion, insulation breakdown, combustion and the like of the cable joint are caused, the large-scale power failure and fire accidents are caused, and the great economic and property loss is brought.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a temperature monitoring system for a ring main unit, which can monitor the temperature of a cable joint and the temperature and humidity of gas in the ring main unit in real time, send an alarm to a monitoring terminal in time when the temperature and humidity are abnormal, and automatically start an environment management system.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a temperature monitoring system of looped netowrk cabinet, includes signal transmission processing system, signal transmission processing system include the sensor, the sensor be connected with digital-to-analog converter, digital-to-analog converter be connected with digital signal processor, digital signal processor be connected with looped netowrk cabinet main control unit, looped netowrk cabinet main control unit with signal transmission to remote computer terminal, digital-to-analog converter be connected with environmental management system.
As an improvement, the sensors comprise a temperature sensor and a temperature and humidity sensor, the temperature of the cable joint and the temperature and humidity of the gas in the ring main unit can be monitored in real time, and the detected information is transmitted to the remote computer terminal in real time.
As an improvement, the digital-to-analog converter, the digital signal processor, the ring main control unit and the remote computer terminal are connected through optical fiber transmission lines, so that the ring main control unit is high in sensitivity, free of electromagnetic noise interference, insulated, resistant to high temperature and high pressure, corrosion-resistant, long in transmission distance and high in transmission quality.
As an improvement, the main control unit of the ring main unit is a single chip, so that the ring main unit can process signals and execute a preset program, thereby realizing the intellectualization of the ring main unit.
As improvement, the remote computer terminal is provided with an alarm lamp and a buzzer, clear and definite alarm prompt can be given to monitoring personnel, and irreparable loss caused by neglected alarm information is prevented.
As the improvement, the environment treatment system comprises an exhaust fan and a dehumidifier, and can cool and dry the air in the ring main unit, improve the environment in the ring main unit and ensure the stable and safe operation of the ring main unit.
Compared with the prior art, the utility model has the advantages that: digital control system makes the installation simple, realizes long-range real time monitoring, and signal transmission is stable to have the audible and visual alarm function, prevent that monitoring personnel from neglecting important information, can be targeted administer looped netowrk cabinet internal environment, improve equipment life reduces the running cost, can carry out early warning in advance, prevents to enlarge the loss.
Drawings
Fig. 1 is a schematic diagram of a temperature monitoring system of a ring main unit according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to fig. 1, a temperature monitoring system of ring main unit includes a signal transmission processing system, the signal transmission processing system includes a sensor, the sensor is connected with a digital-to-analog converter, the digital-to-analog converter is connected with a digital signal processor, the digital signal processor is connected with a ring main unit, the ring main unit transmits signals to a remote computer terminal, and the digital-to-analog converter is connected with an environment management system.
The sensor comprises a temperature sensor and a temperature and humidity sensor, wherein the temperature sensor is a wireless temperature sensor, the measurement temperature range of the wireless temperature sensor is-40 ℃ to +150 ℃, the measurement precision is +/-1 ℃, the measurement temperature range of the temperature and humidity sensor is-40 ℃ to +200 ℃, the measurement precision is +/-1 ℃, the moderate measurement range is 0-100% RH, and the measurement precision is +/-2% RH, so that the temperature and the humidity can be accurately measured, accurate information is provided for monitoring personnel, and the monitoring personnel can accurately judge the working state of the ring main unit.
The digital-to-analog converter, the digital signal processor, the ring main control unit and the remote computer terminal are connected through optical fiber transmission lines, data and signal transmission is carried out by taking optical fibers as media, the sensitivity is high, the interference of electromagnetic noise is avoided, and the ring main control unit is insulating, high-voltage resistant, high-temperature resistant, corrosion resistant, high in signal transmission quality and long in transmission distance.
The ring main unit is a single chip microcomputer, adopts a P87LPC769 type single chip microcomputer, has the characteristics of high integration level, low cost and low power consumption, and can meet various performance requirements.
Remote computer terminal be equipped with warning light and bee calling organ, the warning light is red stroboscopic lamp, bee calling organ is active, can aggravate the warning effect to the control personnel, prevents to ignore important information and lead to not taking measures in time and take place the incident.
The environment management system comprises an exhaust fan and a dehumidifier, the gas in the ring main unit is discharged for heat dissipation, air is dried, a good environment is provided for stable and safe operation of the ring main unit, the service life of the equipment is prolonged, maintenance is reduced, and the use cost is reduced.
When the utility model is implemented, the wireless temperature sensor and the temperature and humidity sensor are arranged at the appointed positions, and are connected to the digital-to-analog converter by the optical fiber transmission line, the digital-to-analog converter is connected with the digital signal processor by the optical fiber transmission line, the digital signal processor is connected with the ring main control unit by the optical fiber transmission line, the ring main control unit is connected with the remote computer terminal by the optical fiber transmission line, the exhaust fan and the dehumidifier are connected with the digital-to-analog converter by the optical fiber transmission line, and the power supply is connected to the power supply of the ring main control unit.
The working principle of the utility model is as follows: the wireless temperature sensor and the temperature and humidity sensor monitor the action part, convert the monitoring result into an analog signal and transmit the analog signal to the digital-to-analog converter, convert the analog signal into a digital signal and transmit the digital signal to the digital signal processor, the digital signal processor processes the digital signal and transmits the digital signal to the main control unit of the ring main unit, the main control unit of the ring main unit transmits the digital signal to the remote computer terminal, the main control unit of the ring main unit sets a temperature drop value, a warning value and an alarm value as well as a drying value, a warning value and an alarm value of humidity according to the different detection parts, when one or all of the temperature of a cable joint and the temperature of the air in the ring main unit rises to the drop temperature, the set program is utilized, the exhaust fan is automatically started to drop the temperature, when one or two of the temperature rises to the warning value, the alarm signal is sent to the remote monitoring terminal to display the high temperature position and the temperature, the alarm lamp and the buzzer work, if the temperature drops below the warning value, the alarm lamp and the buzzer stop working, if the temperature continues to rise above the warning value, the alarm lamp is normally on, the buzzer constantly sounds, if the humidity in the air exceeds the drying value, the dryer starts to dry, if the humidity is greater than the warning value, an alarm signal is sent to the remote monitoring terminal to display the humidity, the alarm lamp and the buzzer work, if the humidity drops below the warning value, the alarm lamp and the buzzer stop working, and if the humidity continues to rise above the warning value, the alarm lamp is normally on, and the buzzer constantly sounds.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The utility model provides a temperature monitoring system of looped netowrk cabinet, includes signal transmission processing system, its characterized in that: the signal transmission processing system comprises a sensor, the sensor is connected with a digital-to-analog converter, the digital-to-analog converter is connected with a digital signal processor, the digital signal processor is connected with a ring main unit, the ring main unit transmits signals to a remote computer terminal, and the digital-to-analog converter is connected with an environment management system.
2. The temperature monitoring system of the ring main unit according to claim 1, wherein: the sensor comprises a temperature sensor and a temperature and humidity sensor.
3. The temperature monitoring system of the ring main unit according to claim 1, wherein: the digital-to-analog converter, the digital signal processor, the ring main unit and the remote computer terminal are connected through optical fiber transmission lines.
4. The temperature monitoring system of the ring main unit according to claim 1, wherein: the main control unit of the ring main unit is a single chip microcomputer.
5. The temperature monitoring system of the ring main unit according to claim 1, wherein: the remote computer terminal is provided with an alarm lamp and a buzzer.
6. The temperature monitoring system of the ring main unit according to claim 1, wherein: the environment management system comprises an exhaust fan and a dehumidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050522.0U CN215769514U (en) | 2021-08-27 | 2021-08-27 | Temperature monitoring system of ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050522.0U CN215769514U (en) | 2021-08-27 | 2021-08-27 | Temperature monitoring system of ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215769514U true CN215769514U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122050522.0U Active CN215769514U (en) | 2021-08-27 | 2021-08-27 | Temperature monitoring system of ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215769514U (en) |
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2021
- 2021-08-27 CN CN202122050522.0U patent/CN215769514U/en active Active
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