CN214334065U - Intelligent transformer temperature monitoring system - Google Patents
Intelligent transformer temperature monitoring system Download PDFInfo
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- CN214334065U CN214334065U CN202022932591.XU CN202022932591U CN214334065U CN 214334065 U CN214334065 U CN 214334065U CN 202022932591 U CN202022932591 U CN 202022932591U CN 214334065 U CN214334065 U CN 214334065U
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Abstract
An intelligent transformer temperature monitoring system comprises a temperature monitoring sensing module; the temperature monitoring sensing module comprises an intelligent temperature sensor, a radio frequency gain antenna and a temperature collector; the temperature intelligent sensor supplies power and transmits temperature data through the radio frequency gain antenna; the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface. The monitoring system realizes power taking and temperature data transmission through the ultrahigh frequency radio frequency signal, can normally work under the electrified and power failure states of electrical equipment, adopts the passive wireless induction power taking technology to realize the online monitoring of the temperature of the transformer, and finds the abnormal condition of the temperature of the transformer in time to prevent the transformer accident.
Description
Technical Field
The utility model belongs to the technical field of transformer on-line monitoring in power transmission and transformation equipment, concretely relates to 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 measuring sensor mainly comprises an optical fiber temperature measuring sensor, a platinum thermal resistance 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 platinum thermal resistance temperature sensor adopts a cable for signal transmission, the temperature signal is greatly influenced by the environment, and the temperature measurement is unstable.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims at providing an intelligent transformer temperature monitoring system adopts the passive wireless induction to get the online monitoring that the electric technique realized the transformer temperature to and discover the transformer temperature abnormal conditions in time, prevent the emergence of transformer accident.
In order to achieve the above object, the utility model provides an intelligent transformer temperature monitoring system, which comprises a temperature monitoring sensing module; the temperature monitoring sensing module comprises an intelligent temperature sensor, a radio frequency gain antenna and a temperature collector;
the intelligent temperature sensor supplies power and transmits temperature data through the radio frequency gain antenna;
the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface.
Furthermore, the temperature intelligent sensor is fixedly arranged on each phase winding, the iron core and/or each phase cable head of the intelligent transformer.
Furthermore, the radio frequency gain antenna is fixed near the temperature intelligent sensor through a strong neodymium magnet and a strong adhesive.
Furthermore, the temperature collector is connected with a plurality of radio frequency gain antennas through coaxial cables.
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.
Further, the transformer state monitoring device further comprises a switching value acquisition module for acquiring the relay output state of the transformer state monitoring sensor.
Further, the transformer state monitoring sensor comprises an entrance guard sensor, a smoke sensor and/or a water immersion sensor.
In summary, the utility model provides an intelligent transformer temperature monitoring system, which comprises a temperature monitoring sensing module; the temperature monitoring sensing module comprises an intelligent temperature sensor, a radio frequency gain antenna and a temperature collector; the temperature intelligent sensor supplies power and transmits temperature data through the radio frequency gain antenna; the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface. The monitoring system realizes power taking and temperature data transmission through the ultrahigh frequency radio frequency signal, can normally work under the electrified and power failure states of electrical equipment, adopts the passive wireless induction power taking technology to realize the online monitoring of the temperature of the transformer, and finds the abnormal condition of the temperature of the transformer in time to prevent the transformer accident.
Drawings
Fig. 1 is a schematic structural diagram of a temperature monitoring and sensing module according to an embodiment of the present invention;
fig. 2 is the embodiment of the utility model provides a smart transformer temperature monitoring system's schematic structure diagram.
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 detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative 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.
The utility model provides an intelligent transformer temperature monitoring system, which comprises a temperature monitoring sensing module, as shown in figure 1; the temperature monitoring sensing module comprises an intelligent temperature sensor 1, a radio frequency gain antenna 2 and a temperature collector 3; the temperature intelligent sensor supplies power and transmits temperature data through the radio frequency gain antenna; the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface.
Furthermore, the temperature intelligent sensor is fixedly arranged on each phase winding, iron core and/or each phase cable head of the intelligent transformer and is used for measuring and transmitting the temperature of each winding and iron core and the temperature of each phase cable head. The intelligent temperature sensor realizes power taking and temperature data transmission through an ultrahigh frequency radio frequency signal, can normally work under the states of electrification and power failure of electrical equipment, can upwards transmit data according to set time, acquires and transmits the temperature data based on full digital link, and the data is confirmed to be uploaded through CRC parity check, so that co-channel interference and signal interference among different shielding cabinets are avoided. The temperature intelligent sensor is installed close to the metal surface of the electrified conductor and embedded in a fastening nut at the head of the medium-voltage cable or an elbow-shaped head near the cable.
Furthermore, the radio frequency gain antenna is fixed near the temperature intelligent sensor through a strong neodymium magnet and a strong adhesive. The gain of the radio frequency gain antenna is 3-12dBi or is set according to actual engineering.
Furthermore, the temperature collector is connected with a plurality of radio frequency gain antennas through coaxial cables. The temperature collector of multiport passes through the radio frequency gain antenna and realizes the management and the temperature data transmission to temperature intelligent sensor, can send the temperature value of gathering to transformer terminal through RS485 communication interface with Modbus RTU communication protocol. The temperature collector can be installed in a wall-mounted or guide rail manner, and can be connected with a plurality of wireless gain antennas through coaxial cables to send and receive temperature measurement instructions.
Further, as shown in fig. 2, the device further includes a high temperature alarm module, when the temperature of any phase winding, iron core and/or any phase cable head of the transformer body exceeds a high temperature alarm fixed value of the body, the delay unit performs delay confirmation for a certain delay time (such as 60s), the device starts the fan of the transformer body, and sends out a high temperature alarm 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.
Further, the transformer state monitoring device further comprises a switching value acquisition module for acquiring the output state of the relay of the transformer state monitoring sensor, and acquiring not less than 4 switching value inputs. The transformer state monitoring sensor comprises an entrance guard sensor, a smoke sensor and/or a water immersion sensor.
In summary, the utility model provides an intelligent transformer temperature monitoring system, which comprises a temperature monitoring sensing module; the temperature monitoring sensing module comprises an intelligent temperature sensor, a radio frequency gain antenna and a temperature collector; the temperature intelligent sensor supplies power and transmits temperature data through the radio frequency gain antenna; the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface. The monitoring system realizes power taking and temperature data transmission through the ultrahigh frequency radio frequency signal, can normally work under the electrified and power failure states of electrical equipment, adopts the passive wireless induction power taking technology to realize the online monitoring of the temperature of the transformer, and finds the abnormal condition of the temperature of the transformer in time to prevent the transformer accident.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. 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 (9)
1. An intelligent transformer temperature monitoring system is characterized by comprising a temperature monitoring sensing module; the temperature monitoring sensing module comprises an intelligent temperature sensor, a radio frequency gain antenna and a temperature collector;
the intelligent temperature sensor supplies power and transmits temperature data through the radio frequency gain antenna;
the temperature collector is connected with the radio frequency gain antenna, transmits radio frequency signals by controlling the radio frequency gain antenna so as to send and receive temperature measurement instructions to the temperature intelligent sensor, and transmits the collected temperature values to the intelligent transformer terminal through the communication interface.
2. The intelligent transformer temperature monitoring system according to claim 1, wherein the intelligent temperature sensor is fixedly arranged on each phase winding, iron core and/or each phase cable head of the intelligent transformer.
3. An intelligent transformer temperature monitoring system according to claim 1 or 2, wherein the radio frequency gain antenna is fixed in proximity to the temperature intelligent sensor by strong neodymium magnet and strong adhesive.
4. The intelligent transformer temperature monitoring system of claim 1 or 2, wherein the temperature collector is connected with a plurality of radio frequency gain antennas through coaxial cables.
5. The intelligent transformer temperature monitoring system according to claim 1 or 2, 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 5, further comprising a cooling fan and a fan control module;
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.
7. The intelligent transformer temperature monitoring system of claim 5, 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.
8. The intelligent transformer temperature monitoring system of claim 1, further comprising a switching value acquisition module that acquires a relay output state of the transformer state monitoring sensor.
9. The intelligent transformer temperature monitoring system of claim 8, wherein the transformer state monitoring sensors comprise door entry sensors, smoke sensors and/or water immersion sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022932591.XU CN214334065U (en) | 2020-12-07 | 2020-12-07 | Intelligent transformer temperature monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022932591.XU CN214334065U (en) | 2020-12-07 | 2020-12-07 | Intelligent transformer temperature monitoring system |
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| CN214334065U true CN214334065U (en) | 2021-10-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236287A (en) * | 2021-12-16 | 2022-03-25 | 国网上海市电力公司 | Distribution transformer detection system, method and medium based on multiple sensors |
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2020
- 2020-12-07 CN CN202022932591.XU patent/CN214334065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236287A (en) * | 2021-12-16 | 2022-03-25 | 国网上海市电力公司 | Distribution transformer detection system, method and medium based on multiple sensors |
| CN114236287B (en) * | 2021-12-16 | 2023-12-08 | 国网上海市电力公司 | Distribution transformer detecting system and medium based on multiple sensors |
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