CN111412990A - Power equipment temperature monitoring system and method - Google Patents
Power equipment temperature monitoring system and method Download PDFInfo
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- CN111412990A CN111412990A CN201910007971.1A CN201910007971A CN111412990A CN 111412990 A CN111412990 A CN 111412990A CN 201910007971 A CN201910007971 A CN 201910007971A CN 111412990 A CN111412990 A CN 111412990A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000013021 overheating Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the technical field of power engineering, in particular to a system and a method for monitoring the temperature of power equipment, wherein the monitoring system comprises an infrared temperature measuring instrument, a timing module, a storage module, a PID control module and a voltage control module; compared with the prior art, the invention adds a comparison period taking one year as a period, can compare the temperature condition of the year with the same period of the last year, introduces a PID control link, can effectively control the voltage of the equipment according to the temperature of the equipment, enables the power equipment to work in a stable state all the time, effectively avoids faults caused by overheating, and can timely know the abnormality of the equipment when the temperature is abnormally low.
Description
Technical Field
The invention relates to the technical field of power engineering, in particular to a system and a method for monitoring the temperature of power equipment.
Background
At present, in the field of control of power equipment, temperature measurement is often required to be performed on power equipment such as transformers, lines and switches, and maintenance measures are taken on equipment with abnormal temperature, so that equipment accidents are avoided. Power equipment works in a complex environment, the temperature rise of the equipment is influenced by time-saving change to generate temperature, and adverse influence is caused on temperature alarm.
Therefore, the prior art has yet to be developed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a power equipment temperature monitoring system and method. The problem of prior art measurement accuracy is poor, the security is poor is solved.
To achieve the above and other related objects, the present invention provides a temperature monitoring system for electrical equipment, comprising:
the infrared temperature measuring instrument is used for detecting the temperature of the power equipment and sending an equipment temperature signal;
the timing module is used for recording the time when the temperature of the power equipment is detected and sending a time signal;
the storage module is used for storing the temperature signal and the time signal, comparing the temperature signal and outputting a comparison difference value;
the PID control module is used for carrying out PID control on the comparison difference value and outputting a voltage reference value;
and the voltage control module controls the input voltage of the power equipment according to the voltage reference value.
In an embodiment of the present invention, a preset alarm unit is further disposed on the storage module, and the preset alarm unit is in communication connection with the voltage control module.
The invention also provides a monitoring method of the monitoring system, which comprises the following steps:
1) the storage module receives the equipment temperature signal sent by the temperature measuring module and the time signal sent by the timing module;
2) the storage module packages the equipment temperature signal and the corresponding time signal, and compares the current equipment temperature signal with the equipment temperature signal before a comparison period to obtain the comparison difference;
3) the PID control module performs PID control on the comparison difference value to obtain a voltage reference value of the power equipment;
4) the voltage control module receives the voltage reference value and sets the input voltage of the power equipment according to the voltage reference value.
In an embodiment of the present invention, the step 1) further includes, before the step, the steps of: and the user sets early warning temperature in the preset warning unit.
In an embodiment of the invention, the early warning temperatures include a first early warning temperature, a second early warning temperature, and a third early warning temperature.
In an embodiment of the present invention, a pre-detection step is further included between step 1) and step 2), where the pre-detection step is: detecting whether the equipment temperature contained in the equipment temperature signal meets a first preset condition, if so, sending a turn-off instruction to the voltage control module by the preset alarm unit, setting the input voltage of the power equipment to be 0 by the voltage control module, and directly ending the control flow by skipping the steps 2), 3) and 4); otherwise go to step 2).
In an embodiment of the invention, the first predetermined condition is that any one of the following conditions is satisfied:
A) exceeding the first warning temperature;
B) the time exceeding the second early warning temperature exceeds the overheating early warning time;
C) and the time lower than the third early warning temperature exceeds the fault early warning time.
In an embodiment of the present invention, the overload warning time and the fault warning time are both 15 minutes, and the comparison period is 1 year.
As described above, the system and method for monitoring the temperature of the electrical equipment of the present invention have the following advantages: the comparison period with one year as the period is added, the temperature condition of the year can be compared with the same period of the last year, a PID control link is introduced, the voltage of the power equipment can be effectively controlled according to the temperature of the power equipment, the power equipment always works in a stable state, faults caused by overheating are effectively avoided, and the abnormal condition of the power equipment can be timely known when the temperature is abnormally low.
Drawings
Fig. 1 is a schematic flow chart of a temperature monitoring system and method disclosed in the embodiments of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1, the present invention provides a temperature monitoring system for electrical equipment, comprising:
the infrared temperature measuring instrument is used for detecting the temperature of the power equipment and sending an equipment temperature signal;
the timing module is used for recording the time when the temperature of the power equipment is detected and sending a time signal;
the storage module is used for storing the temperature signal and the time signal, comparing the temperature signal and outputting a comparison difference value;
the PID control module is used for carrying out PID control on the comparison difference value and outputting a voltage reference value;
and the voltage control module controls the input voltage of the power equipment according to the voltage reference value.
Furthermore, a preset alarm unit is further arranged on the storage module and is in communication connection with the voltage control module.
As shown in fig. 1, the monitoring method of the monitoring system includes the following steps:
1) the storage module receives the equipment temperature signal sent by the temperature measuring module and the time signal sent by the timing module;
2) the storage module correspondingly packages the equipment temperature signal and the time signal, and compares the equipment temperature signal at the moment with the equipment temperature signal before 1 year to obtain the comparison difference;
3) the PID control module performs PID control on the comparison difference value to obtain a voltage reference value of the power equipment;
4) the voltage control module receives the voltage reference value and sets the input voltage of the power equipment according to the voltage reference value.
Further, the step 1) is preceded by: and the user sets early warning temperature in the preset warning unit.
Further, the early warning temperature comprises a first early warning temperature of 80 ℃, a second early warning temperature of 60 ℃ and a third early warning temperature of 30 ℃.
Further, between step 1) and step 2), further comprising: a preliminary detection step, which is as follows: detecting whether the equipment temperature contained in the equipment temperature signal meets a first preset condition, if so, sending a turn-off instruction to the voltage control module by the preset alarm unit, setting the input voltage of the power equipment to be 0 by the voltage control module, and directly ending the control flow by skipping the steps 2), 3) and 4); otherwise go to step 2).
Further, the first preset condition is that any one of the following conditions is satisfied:
A) over 80 deg.C;
B) for 15 minutes over 60 ℃;
C) below 30 ℃ for 15 minutes.
In summary, the present invention compares the currently measured device temperature with the device temperature in the same period of the last year, and performs PID control based on the difference, thereby effectively avoiding the problem of poor voltage stability caused by the change of ambient temperature, and simultaneously avoiding three common fault situations, when the device temperature exceeds 80 degrees, it is overheated, and it is necessary to immediately shut down to prevent the device from being damaged by overheating, when the device temperature continuously exceeds 60 degrees, it is necessary to overload the device, and it is necessary to shut down for maintenance, when the device temperature continuously falls below 30 degrees, it is necessary to manually confirm and maintain the device is not in the working state. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. An electrical equipment temperature monitoring system, comprising:
the infrared temperature measuring instrument is used for detecting the temperature of the power equipment and sending an equipment temperature signal;
the timing module is used for recording the time when the temperature of the power equipment is detected and sending a time signal;
the storage module is used for storing the temperature signal and the time signal, comparing the temperature signal and outputting a comparison difference value;
the PID control module is used for carrying out PID control on the comparison difference value and outputting a voltage reference value;
and the voltage control module controls the input voltage of the power equipment according to the voltage reference value.
2. The power equipment temperature monitoring system according to claim 1, wherein a preset alarm unit is further arranged on the storage module, and the preset alarm unit is in communication connection with the voltage control module.
3. A monitoring method of a monitoring system according to any one of claims 1 to 2, further comprising the steps of:
1) the storage module receives the equipment temperature signal sent by the temperature measuring module and the time signal sent by the timing module;
2) the storage module packages the equipment temperature signal and the corresponding time signal, and compares the current equipment temperature signal with the equipment temperature signal before a comparison period to obtain the comparison difference;
3) the PID control module performs PID control on the comparison difference value to obtain a voltage reference value of the power equipment;
4) the voltage control module receives the voltage reference value and sets the input voltage of the power equipment according to the voltage reference value.
4. The method for monitoring the temperature of the electric power equipment according to claim 3, wherein the step 1) is preceded by: and the user sets early warning temperature in the preset warning unit.
5. The method for monitoring the temperature of the power equipment according to claim 4, wherein the early warning temperatures comprise a first early warning temperature, a second early warning temperature and a third early warning temperature.
6. The method for monitoring the temperature of the electric power equipment according to claim 5, further comprising a preliminary detection step between the step 1) and the step 2), wherein the preliminary detection step comprises: detecting whether the equipment temperature contained in the equipment temperature signal meets a first preset condition, if so, sending a turn-off instruction to the voltage control module by the preset alarm unit, setting the input voltage of the power equipment to be 0 by the voltage control module, and directly ending the control flow by skipping the steps 2), 3) and 4); otherwise go to step 2).
7. The power equipment temperature monitoring method according to claim 6, wherein the first preset condition is that any one of the following conditions is satisfied:
A) exceeding the first warning temperature;
B) the time exceeding the second early warning temperature exceeds the overheating early warning time;
C) and the time lower than the third early warning temperature exceeds the fault early warning time.
8. The method according to claim 7, wherein the overload warning time and the fault warning time are both 15 minutes, and the comparison period is 1 year.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007971.1A CN111412990A (en) | 2019-01-04 | 2019-01-04 | Power equipment temperature monitoring system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007971.1A CN111412990A (en) | 2019-01-04 | 2019-01-04 | Power equipment temperature monitoring system and method |
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| Publication Number | Publication Date |
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| CN111412990A true CN111412990A (en) | 2020-07-14 |
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| CN201910007971.1A Pending CN111412990A (en) | 2019-01-04 | 2019-01-04 | Power equipment temperature monitoring system and method |
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Citations (5)
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|---|---|---|---|---|
| CN106441626A (en) * | 2016-07-27 | 2017-02-22 | 浙江浙能嘉华发电有限公司 | Power equipment aging analysis system and analysis method based on passive wireless temperature measurement |
| CN106679847A (en) * | 2016-12-14 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Electric power equipment fault diagnosing method and apparatus |
| TWM546636U (en) * | 2017-03-30 | 2017-08-01 | 亞洲大學 | Internet-of-things monitoring system |
| CN107367658A (en) * | 2017-08-31 | 2017-11-21 | 北京蓝海华业科技股份有限公司 | A kind of system for monitoring power equipment |
| CN107656567A (en) * | 2017-09-30 | 2018-02-02 | 华南理工大学 | A kind of the driving voltage adjusting means and method of smooth IGBT variations injunction temperatures |
-
2019
- 2019-01-04 CN CN201910007971.1A patent/CN111412990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441626A (en) * | 2016-07-27 | 2017-02-22 | 浙江浙能嘉华发电有限公司 | Power equipment aging analysis system and analysis method based on passive wireless temperature measurement |
| CN106679847A (en) * | 2016-12-14 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Electric power equipment fault diagnosing method and apparatus |
| TWM546636U (en) * | 2017-03-30 | 2017-08-01 | 亞洲大學 | Internet-of-things monitoring system |
| CN107367658A (en) * | 2017-08-31 | 2017-11-21 | 北京蓝海华业科技股份有限公司 | A kind of system for monitoring power equipment |
| CN107656567A (en) * | 2017-09-30 | 2018-02-02 | 华南理工大学 | A kind of the driving voltage adjusting means and method of smooth IGBT variations injunction temperatures |
Non-Patent Citations (1)
| Title |
|---|
| 汤小娇: "一种新型螺旋叶片成形工艺加热系统的研究", 《冶金自动化》, pages 2 - 3 * |
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