CN110631738A - Power transformer temperature detection system based on inductive power supply and detection method thereof - Google Patents
Power transformer temperature detection system based on inductive power supply and detection method thereof Download PDFInfo
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- CN110631738A CN110631738A CN201910992240.7A CN201910992240A CN110631738A CN 110631738 A CN110631738 A CN 110631738A CN 201910992240 A CN201910992240 A CN 201910992240A CN 110631738 A CN110631738 A CN 110631738A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention provides a power transformer temperature detection system based on induction power supply, which comprises a temperature sensor, a power supply unit, a signal conditioning unit, an A/D conversion unit, a control processing unit, a key input unit, a storage unit, a display unit, an alarm unit and a communication unit, wherein the power supply unit is used for supplying power to a power transformer; the temperature detection system judges whether the temperature of the power transformer is abnormal or not according to the temperature signals collected by the temperature sensor, performs alarm display through the alarm unit and the storage unit, and uploads the alarm display to a monitoring center through the communication unit, so that the temperature condition of the power transformer is effectively monitored. The invention provides a power transformer temperature detection system and method based on inductive power supply, which adopts an inductive power supply mode to provide a power supply and improves the reliability of the temperature detection system.
Description
Technical Field
The invention belongs to the technical field of power detection, and particularly relates to a power transformer temperature detection system based on inductive power supply and a detection method thereof.
Background
The power transformer is one of important components of a power system, and safe and stable operation is an important guarantee for the reliability of the power system. With the continuous development of science and technology, people detect power transformers in real time in order to guarantee the reliable work of transformers, and the temperature of incoming and outgoing lines of the transformers is one of important monitoring projects of the transformers.
The invention provides a power transformer temperature detection system based on induction power supply, which adopts an induction power supply mode to provide a power supply for the temperature detection system, does not need to additionally provide a power supply, fully utilizes the working magnetic field environment of the temperature detection system, and reduces the energy consumption of the temperature detection system.
Disclosure of Invention
The invention provides a power transformer temperature detection system and method based on inductive power supply, which adopts an inductive power supply mode to provide a power supply and improves the reliability of the temperature detection system.
The invention particularly relates to a power transformer temperature detection system based on induction power supply, which comprises a temperature sensor, a power supply unit, a signal conditioning unit, an A/D conversion unit, a control processing unit, a key input unit, a storage unit, a display unit, an alarm unit and a communication unit, wherein the temperature sensor is sequentially connected with the signal conditioning unit, the A/D conversion unit and the control processing unit; the temperature detection system judges whether the temperature of the power transformer is abnormal or not according to the temperature signals collected by the temperature sensor, performs alarm display through the alarm unit and the storage unit, and uploads the alarm display to a monitoring center through the communication unit, so that the temperature condition of the power transformer is effectively monitored.
The temperature sensor is arranged at the position of the wire inlet and outlet joint of the power transformer, and a DS18B20 temperature sensor is adopted to collect the temperature signal of the wire inlet and outlet joint of the power transformer.
The power supply unit comprises a capacitive energy taking device, a storage battery and a voltage conditioning module, wherein the capacitive energy taking device is vertically arranged in a stable alternating electric field by adopting a capacitor made of two parallel thin metal polar plates, and generates voltage by induction along with the change of the electric field; the storage battery adopts a lithium battery to store the electric energy collected by the capacitive energy-taking device; the voltage conditioning module conditions the output voltage of the capacitive energy-taking device and outputs the voltage meeting the requirement to provide a power supply for the temperature sensor.
The signal conditioning unit comprises a signal amplification module and a filtering module, wherein the signal amplification module is used for amplifying the temperature signal and outputting a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
The key input unit is combined with the storage unit and the display unit to carry out parameter setting and information inquiry on the temperature detection system, and the parameters comprise temperature alarm values.
The alarm unit adopts an audible and visual alarm, and timely sends out audible and visual alarm signals when the power transformer is abnormal in temperature.
And the communication unit uploads the information of the temperature detection system to the monitoring center by adopting a GPRS wireless communication technology.
The invention also provides a detection method of the power transformer temperature detection system based on induction power supply, which comprises the following steps:
step (1): acquiring temperature signals of the wire inlet and outlet joints of the power transformer through the temperature sensor;
step (2): the temperature signal is amplified through the signal amplification module;
and (3): filtering processing is carried out through the filtering module;
and (4): performing A/D conversion by the A/D conversion unit;
and (5): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;
and (6): and uploading the information of the temperature detection system to the monitoring center through the communication unit.
Compared with the prior art, the beneficial effects are: the temperature detection system adopts the capacitive energy-taking device to generate voltage in an induction mode so as to provide power for the temperature sensor, the power supply is stable, the working magnetic field environment of the temperature detection system is fully utilized, and the reliability of the temperature detection system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a power transformer temperature detection system based on inductive power supply according to the present invention.
Fig. 2 is a flowchart illustrating a method for detecting a power transformer temperature detection system based on inductive power supply according to the present invention.
Detailed Description
The following describes in detail an embodiment of the power transformer temperature detection system based on inductive power supply according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the temperature detection system of the present invention includes a temperature sensor, a power supply unit, a signal conditioning unit, an a/D conversion unit, a control processing unit, a key input unit, a storage unit, a display unit, an alarm unit, and a communication unit, wherein the temperature sensor is sequentially connected to the signal conditioning unit, the a/D conversion unit, and the control processing unit, the power supply unit is connected to the temperature sensor, and the control processing unit is further connected to the key input unit, the storage unit, the display unit, the alarm unit, and the communication unit, respectively; the temperature detection system judges whether the temperature of the power transformer is abnormal or not according to the temperature signals collected by the temperature sensor, performs alarm display through the alarm unit and the storage unit, and uploads the alarm display to a monitoring center through the communication unit, so that the temperature condition of the power transformer is effectively monitored.
The temperature sensor is arranged at the position of the wire inlet and outlet joint of the power transformer, and a DS18B20 temperature sensor is adopted to collect the temperature signal of the wire inlet and outlet joint of the power transformer.
The power supply unit comprises a capacitive energy taking device, a storage battery and a voltage conditioning module, wherein the capacitive energy taking device is vertically arranged in a stable alternating electric field by adopting a capacitor made of two parallel thin metal polar plates, and generates voltage by induction along with the change of the electric field; the storage battery adopts a lithium battery to store the electric energy collected by the capacitive energy-taking device; the voltage conditioning module conditions the output voltage of the capacitive energy-taking device and outputs the voltage meeting the requirement to provide a power supply for the temperature sensor.
The signal conditioning unit comprises a signal amplification module and a filtering module, wherein the signal amplification module is used for amplifying the temperature signal and outputting a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
The key input unit is combined with the storage unit and the display unit to carry out parameter setting and information inquiry on the temperature detection system, and the parameters comprise temperature alarm values.
The alarm unit adopts an audible and visual alarm, and timely sends out audible and visual alarm signals when the power transformer is abnormal in temperature.
And the communication unit uploads the information of the temperature detection system to the monitoring center by adopting a GPRS wireless communication technology.
As shown in fig. 2, the present invention further provides a detection method of a power transformer temperature detection system based on inductive power supply, wherein the detection method includes the following steps:
step (1): acquiring temperature signals of the wire inlet and outlet joints of the power transformer through the temperature sensor;
step (2): the temperature signal is amplified through the signal amplification module;
and (3): filtering processing is carried out through the filtering module;
and (4): performing A/D conversion by the A/D conversion unit;
and (5): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;
and (6): and uploading the information of the temperature detection system to the monitoring center through the communication unit.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A power transformer temperature detection system based on induction power supply is characterized by comprising a temperature sensor, a power supply unit, a signal conditioning unit, an A/D conversion unit, a control processing unit, a key input unit, a storage unit, a display unit, an alarm unit and a communication unit, wherein the temperature sensor is sequentially connected with the signal conditioning unit, the A/D conversion unit and the control processing unit; the temperature detection system judges whether the temperature of the power transformer is abnormal or not according to the temperature signals collected by the temperature sensor, performs alarm display through the alarm unit and the storage unit, and uploads the alarm display to a monitoring center through the communication unit, so that the temperature condition of the power transformer is effectively monitored.
2. The system of claim 1, wherein the temperature sensor is installed at the inlet and outlet connector of the power transformer, and a DS18B20 temperature sensor is used to collect the temperature signal of the inlet and outlet connector of the power transformer.
3. The system for detecting the temperature of the power transformer based on the induction power supply is characterized in that the power supply unit comprises a capacitive energy-taking device, a storage battery and a voltage conditioning module, wherein the capacitive energy-taking device is vertically installed in a stable alternating electric field by adopting a capacitor made of two parallel thin metal plates, and generates a voltage in an induction mode along with the change of the electric field; the storage battery adopts a lithium battery to store the electric energy collected by the capacitive energy-taking device; the voltage conditioning module conditions the output voltage of the capacitive energy-taking device and outputs the voltage meeting the requirement to provide a power supply for the temperature sensor.
4. The power transformer temperature detection system based on induction power supply of claim 3, wherein the signal conditioning unit comprises a signal amplification module and a filtering module, the signal amplification module amplifies the temperature signal and outputs a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
5. The power transformer temperature detection system based on induction power supply as claimed in claim 4, wherein said key input unit is combined with said storage unit and said display unit to perform parameter setting and information query on said temperature detection system, and said parameter includes a temperature alarm value.
6. The system for detecting the temperature of the power transformer based on the induction power supply as claimed in claim 5, wherein the alarm unit is an audible and visual alarm, and an audible and visual alarm signal is timely sent out when the temperature of the power transformer is abnormal.
7. The power transformer temperature detection system based on induction power supply of claim 6, wherein the communication unit uploads information of the temperature detection system to the monitoring center by using GPRS wireless communication technology.
8. The detection method of the power transformer temperature detection system based on the induction power supply according to any one of the claims 1 to 7, characterized in that the detection method comprises the following steps:
step (1): acquiring temperature signals of the wire inlet and outlet joints of the power transformer through the temperature sensor;
step (2): the temperature signal is amplified through the signal amplification module;
and (3): filtering processing is carried out through the filtering module;
and (4): performing A/D conversion by the A/D conversion unit;
and (5): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;
and (6): and uploading the information of the temperature detection system to the monitoring center through the communication unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782462A (en) * | 2020-12-04 | 2021-05-11 | 国网江苏省电力有限公司盐城供电分公司 | Direct-current voltage detection alarm system based on electric field measurement and detection method thereof |
| CN112880870A (en) * | 2021-01-15 | 2021-06-01 | 珠海赣星自动化设备有限公司 | Temperature detection system of cable head temperature measuring device |
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| US20120007532A1 (en) * | 2010-07-08 | 2012-01-12 | Tesla Motors, Inc. | Rotor Temperature Estimation and Motor Control Torque Limiting for Vector-Controlled AC Induction Motors |
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