CN216246893U - Intelligent transformer temperature monitoring system - Google Patents
Intelligent transformer temperature monitoring system Download PDFInfo
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- CN216246893U CN216246893U CN202022945297.2U CN202022945297U CN216246893U CN 216246893 U CN216246893 U CN 216246893U CN 202022945297 U CN202022945297 U CN 202022945297U CN 216246893 U CN216246893 U CN 216246893U
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Abstract
An intelligent transformer temperature monitoring system comprises a temperature measuring device; this temperature measuring device includes: the device comprises a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit and a thermoelectric generator. The thermoelectric generation module based on the thermoelectric generation principle can supply power to the whole temperature measuring device, and meanwhile, the temperature sensor works, and the acquired temperature data are processed and then uploaded to the application layer through the wireless transmitter and the wireless receiver, so that the temperature of the transformer can be monitored on line in real time. The monitoring system is small in size and low in maintenance cost, and has important significance for maintaining safe operation of power equipment such as a transformer.
Description
Technical Field
The utility model belongs to the technical field of online monitoring of transformers in power transmission and transformation equipment, and particularly relates to an intelligent transformer temperature monitoring system.
Background
With the rapid development of the scale of the national power industry, the demand of power consumption is continuously increasing, and the power transformer is continuously developing towards high capacity and high voltage. The transformer is used as important power equipment in a power system, the operation safety and reliability can directly influence the power supply quality of a power grid, wherein overheating faults account for about 63% of the total number of faults, and therefore, the effective implementation of the online monitoring on the temperature of the transformer has important significance for ensuring the safe and stable operation of the transformer.
The temperature monitoring device of the existing transformer is divided into an active temperature measurement mode and a passive temperature measurement mode in terms of power taking. The active temperature measurement mode is an infrared camera temperature measurement mode, real-time temperature detection is carried out by using an infrared imaging principle, but the cost is very high; the passive temperature sensor mainly comprises an optical fiber temperature sensor, an induction electricity-taking temperature sensor and the like. However, the optical fiber temperature sensor adopts the optical fiber as a transmission signal line, so that the temperature measurement precision and the data transmission quality are higher, but the optical fiber core is easy to break during installation and the cost is higher; the induction electricity-taking temperature measurement sensor can normally work only when the induction current is larger than a certain value, and the problem of limited application range exists.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, the present invention provides an intelligent transformer temperature monitoring system, which uses a passive wireless technology and a thermoelectric generation technology to realize online monitoring of the transformer temperature, and to discover abnormal transformer temperature in time, so as to prevent transformer accidents.
In order to achieve the purpose, the utility model provides an intelligent transformer temperature monitoring system, which comprises a temperature measuring device; the temperature measuring device comprises a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit and a thermoelectric generator;
the thermoelectric generator supplies power to the temperature sensor, the signal conditioning and isolating module, the data processing module, the wireless transmitter and the wireless receiver through the energy management circuit;
the temperature sensor is connected with the data processing module through a signal conditioning and isolating module, and converts temperature data into digital signals to be transmitted to the data processing module;
the data processing module is in communication connection with the wireless transmitter, and is used for sending the processed temperature data to the wireless transmitter and then to the wireless receiver through the wireless transmitter;
the temperature measuring device is fixedly arranged on each phase winding, the iron core and/or each phase cable head of the intelligent transformer;
the cooling fan and the fan control module are also included; and when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a high-temperature fan starting fixed value of the body, the fan control module controls the cooling fan to start.
Furthermore, the thermoelectric generator comprises a hot end, a cold end and a radiator, wherein the hot end is arranged at the temperature monitoring part of the transformer, and the radiator is arranged on one side of the cold end.
Furthermore, the energy management circuit comprises a booster circuit, a starting circuit, a voltage stabilizing circuit and an energy storage device.
Further, the device also comprises a display module;
and the wireless receiver transmits the received temperature data to the display module for display.
And further, the high-temperature warning module is used for sending a high-temperature warning signal of the body when the temperature of any phase winding, the iron core and/or any phase cable head of the transformer body exceeds a high-temperature warning fixed value of the body.
Furthermore, the system also comprises a protection control module;
when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds the high-temperature protection fixed value of the body, the protection control module controls the transformer to trip and quit the operation of the transformer.
Furthermore, the system also comprises a delay unit which executes corresponding operation after delaying for a certain time.
In summary, the present invention provides an intelligent transformer temperature monitoring system, wherein the temperature measuring device includes: the device comprises a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit and a thermoelectric generator. The intelligent transformer temperature monitoring system comprises the temperature measuring device. The thermoelectric generation module based on the thermoelectric generation principle can supply power to the whole temperature measuring device, and meanwhile, the temperature sensor works, and the acquired temperature data are processed and then uploaded to the application layer through the wireless transmitter and the wireless receiver, so that the temperature of the transformer can be monitored on line in real time. The temperature measuring device is small in size and low in maintenance cost, and has important significance for maintaining safe operation of power equipment such as a transformer.
Drawings
FIG. 1 is a block diagram of a temperature measuring device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a temperature monitoring system of an intelligent transformer according to an embodiment of the present invention;
fig. 3 is a block diagram of a temperature monitoring system of an intelligent transformer according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
A first aspect of the present invention provides a temperature measuring device, as shown in fig. 1, including a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit, and a thermoelectric generator; the thermoelectric generator supplies power to the temperature sensor, the signal conditioning and isolating module, the data processing module, the wireless transmitter and the wireless receiver through the energy management circuit; the temperature sensor is connected with the data processing module through a signal conditioning and isolating module, and converts temperature data into digital signals to be transmitted to the data processing module; the data processing module is in communication connection with the wireless transmitter, and is used for sending the processed temperature data to the wireless transmitter and then sending the temperature data to the wireless receiver through the wireless transmitter.
Furthermore, the thermoelectric generator comprises a hot end, a cold end and a radiator, wherein the hot end is arranged at the temperature monitoring part of the transformer, and the radiator is arranged on one side of the cold end and directly conducts heat with the cold end. After the temperature difference between the hot end and the cold end reaches a certain degree, the thermoelectric generator converts the heat into electric energy, and the electric energy supplies power to the device after being processed by a subsequent circuit.
Furthermore, the energy management circuit comprises a booster circuit, a starting circuit, a voltage stabilizing circuit and an energy storage device. The booster circuit is responsible for boosting the lower voltage output by the thermoelectric generator and storing the lower voltage in a capacitor or a rechargeable battery; the starting circuit controls the output of energy, when the voltage of the energy storage device rises to a high voltage threshold value, the starting circuit controls the opening of the rear-stage circuit, the energy flows to the rear stage for the use of the subsequent circuit, when the voltage of the energy storage device falls to a low voltage threshold value, the starting circuit controls the closing of the rear-stage circuit, the energy storage device continues to store energy, and the energy storage device works repeatedly.
The data processing module is through controlling temperature sensor regularly acquisition temperature measurement data to convert analog signal into digital signal through signal conditioning and isolation module, and provide the data processing module and handle, the data processing module sends the data of handling through wireless transmitter, is received by another module wireless receiver in the temperature monitoring system, and uploads to PC, APP or display screen demonstration.
A second aspect of the present invention provides a smart transformer temperature monitoring system, as shown in fig. 2 and 3, including the temperature measuring device as described above.
Furthermore, the intelligent transformer temperature monitoring system also comprises a display module; and the wireless receiver transmits the received temperature data to the display module for display.
Furthermore, the temperature measuring device is fixedly arranged on each phase winding, the iron core and/or each phase cable head of the intelligent transformer.
And further, the high-temperature warning device also comprises a high-temperature warning module, when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a high-temperature warning fixed value of the body, the time delay unit delays for certain delay time (such as 60s) to confirm, the device starts the fan of the transformer body, and sends out a high-temperature warning signal of the body at the same time.
Further, the device also comprises a cooling fan and a fan control module; when the temperature of any phase of winding, iron core and/or any phase of cable head of the transformer body exceeds the starting fixed value of the high-temperature fan of the body, the delay unit is confirmed by delaying for a certain delay time (such as 60s), and the fan control module controls the cooling fan to start and sends a remote signal for starting the fan of the body.
Furthermore, the system also comprises a protection control module; when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a high-temperature protection fixed value of the body, the time delay unit is confirmed by delaying for a certain delay time (such as 60s), and the protection control module controls the transformer to trip and quit the operation of the transformer.
In summary, the present invention provides a temperature measuring device and an intelligent transformer temperature monitoring system, wherein the temperature measuring device comprises: the device comprises a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit and a thermoelectric generator. The intelligent transformer temperature monitoring system comprises the temperature measuring device. The thermoelectric generation module based on the thermoelectric generation principle can supply power to the whole temperature measuring device, and meanwhile, the temperature sensor works, and the acquired temperature data are processed and then uploaded to the application layer through the wireless transmitter and the wireless receiver, so that the temperature of the transformer can be monitored on line in real time. The temperature measuring device is small in size and low in maintenance cost, and has important significance for maintaining safe operation of power equipment such as a transformer.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. An intelligent transformer temperature monitoring system is characterized by comprising a temperature measuring device; the temperature measuring device comprises a temperature sensor, a signal conditioning and isolating module, a data processing module, a wireless transmitter, a wireless receiver, an energy management circuit and a thermoelectric generator;
the thermoelectric generator supplies power to the temperature sensor, the signal conditioning and isolating module, the data processing module, the wireless transmitter and the wireless receiver through the energy management circuit;
the temperature sensor is connected with the data processing module through a signal conditioning and isolating module, and converts temperature data into digital signals to be transmitted to the data processing module;
the data processing module is in communication connection with the wireless transmitter, and is used for sending the processed temperature data to the wireless transmitter and then to the wireless receiver through the wireless transmitter;
the temperature measuring device is fixedly arranged on each phase winding, the iron core and/or each phase cable head of the intelligent transformer;
the cooling fan and the fan control module are also included; and when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a high-temperature fan starting fixed value of the body, the fan control module controls the cooling fan to start.
2. The intelligent transformer temperature monitoring system of claim 1, wherein the thermoelectric generator comprises a hot end, a cold end and a radiator, the hot end is installed at the transformer temperature monitoring position, and the radiator is arranged on one side of the cold end.
3. The intelligent transformer temperature monitoring system of claim 1 or 2, wherein the energy management circuit comprises a boost circuit, a start-up circuit, a voltage regulation circuit and an energy storage device.
4. The intelligent transformer temperature monitoring system of claim 1, further comprising a display module;
and the wireless receiver transmits the received temperature data to the display module for display.
5. The intelligent transformer temperature monitoring system according to claim 1, further comprising a high temperature alarm module, wherein when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a body high temperature alarm fixed value, a body high temperature alarm signal is sent out.
6. The intelligent transformer temperature monitoring system of claim 1, further comprising a protection control module;
when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds the high-temperature protection fixed value of the body, the protection control module controls the transformer to trip and quit the operation of the transformer.
7. The intelligent transformer temperature monitoring system according to any one of claims 5-6, further comprising a delay unit, wherein after a certain time delay, corresponding operations are executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945297.2U CN216246893U (en) | 2020-12-07 | 2020-12-07 | Intelligent transformer temperature monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945297.2U CN216246893U (en) | 2020-12-07 | 2020-12-07 | Intelligent transformer temperature monitoring system |
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| CN216246893U true CN216246893U (en) | 2022-04-08 |
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| CN202022945297.2U Active CN216246893U (en) | 2020-12-07 | 2020-12-07 | Intelligent transformer temperature monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655515A (en) * | 2022-12-07 | 2023-01-31 | 四川赛康智能科技股份有限公司 | High-voltage switch cabinet online temperature measurement system based on energy information integrated transmission technology |
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2020
- 2020-12-07 CN CN202022945297.2U patent/CN216246893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655515A (en) * | 2022-12-07 | 2023-01-31 | 四川赛康智能科技股份有限公司 | High-voltage switch cabinet online temperature measurement system based on energy information integrated transmission technology |
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