CN212903306U - Multi-physical quantity synchronous monitoring device for transformer - Google Patents
Multi-physical quantity synchronous monitoring device for transformer Download PDFInfo
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- CN212903306U CN212903306U CN202020783805.9U CN202020783805U CN212903306U CN 212903306 U CN212903306 U CN 212903306U CN 202020783805 U CN202020783805 U CN 202020783805U CN 212903306 U CN212903306 U CN 212903306U
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Abstract
The utility model discloses a synchronous monitoring device for multiple physical quantities of a transformer, in the device, a neutral point current measuring module is connected with the transformer to be measured to generate a neutral point current signal; the temperature sensor is connected with the transformer to be tested to generate a temperature signal; the noise sensor measures a transformer to be measured to generate a noise signal; the vibration sensor is connected with the transformer to be tested to generate a vibration signal; the multi-physical quantity synchronous analyzer is respectively connected with the neutral point current measuring module, the temperature sensor, the noise sensor and the vibration sensor through the input end, the output end of the multi-physical quantity synchronous analyzer is connected with the display to output processing information, and the display displays the processing information in a multi-channel mode.
Description
Technical Field
The utility model belongs to the technical field of transformer on-line monitoring, especially a many physical quantity synchronous monitoring devices of transformer.
Background
Transformers are core devices in power systems, and with the application of direct-current transmission projects, more and more transformers face direct-current intrusion. The direct current magnetic biasing can affect the running state of the transformer, and even can cause the transformer to be damaged when the direct current magnetic biasing is serious, so that the safe running of a power grid is threatened. The direct current magnetic bias can cause the vibration, noise, temperature rise and the change of neutral point current of the transformer. The transformer operating state can be diagnosed by monitoring the above physical quantities. The current technology can not realize the synchronous measurement and analysis of a plurality of physical quantities such as transformer vibration, noise, temperature rise, neutral point current and the like.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
For solving the weak point of above-mentioned prior art, the utility model provides a many physics volume synchronous monitoring devices of transformer acquires transformer box vibration condition, box temperature, noise and neutral point current data in step. The problem that the running state of the transformer cannot be monitored systematically can be effectively solved, and the monitoring efficiency of the direct-current magnetic biasing of the transformer is effectively improved.
The purpose of the utility model is realized by the following technical scheme.
The multi-physical quantity synchronous monitoring device of the transformer comprises,
the neutral point current measuring module is connected with the transformer to be measured to generate a neutral point current signal;
the temperature sensor is connected with the transformer to be tested to generate a temperature signal;
a noise sensor measuring a transformer to be measured to generate a noise signal;
the vibration sensor is connected with the transformer to be tested to generate a vibration signal;
the multi-physical-quantity synchronous analyzer is connected with the neutral point current measuring module, the temperature sensor, the noise sensor and the vibration sensor through input ends respectively so as to synchronously process the neutral point current signal, the temperature signal, the noise signal and the vibration signal, the output end of the multi-physical-quantity synchronous analyzer is connected with the display so as to output processing information, and the display displays the processing information in a multi-channel mode.
In the device for synchronously monitoring multiple physical quantities of the transformer, the vibration sensors comprise eight acceleration sensors which are connected with the first port to the eighth port of the input end through coaxial cables.
In the transformer multi-physical quantity synchronous monitoring device, the neutral point current measuring module comprises an alternating current/direct current probe and a coaxial cable, and the coaxial cable is connected with the ninth port of the input end.
In the device for synchronously monitoring multiple physical quantities of the transformer, the noise sensor and the voltage transformer are arranged at equal intervals and are connected with the tenth port of the input end through a coaxial cable.
In the multi-physical-quantity synchronous monitoring device for the transformer, the temperature sensor comprises a conversion unit for converting a temperature signal into an electrical signal, and the conversion unit is connected with the eleventh port of the input end through a coaxial cable.
In the device for synchronously monitoring the multiple physical quantities of the transformer, the vibration sensor comprises a plurality of acceleration sensors which are magnetically attracted to the surface of the transformer.
In the multi-physical quantity synchronous monitoring device for the transformer, the acceleration sensors are symmetrically arranged.
In the transformer multi-physical quantity synchronous monitoring device, the multi-physical quantity synchronous analyzer is connected with a display through a twisted pair and a crystal head.
In the device for synchronously monitoring multiple physical quantities of the transformer, the temperature sensor comprises a thermocouple sensor.
In the transformer multi-physical quantity synchronous monitoring device, the neutral point current measuring module comprises a current clamp meter.
The utility model discloses following beneficial effect has:
the utility model discloses realize vibration, noise, temperature and the neutral point current data synchronous acquisition of transformer, can guarantee the real-time synchronism of many physical measurement parameters, improve the degree of accuracy of transformer running state monitoring, can be used to judge whether the transformer takes place direct current magnetic biasing phenomenon and confirm the degree of magnetic biasing.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the technical means of the present invention is implemented to the extent that those skilled in the art can implement the technical solutions according to the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following description is given by way of example of the embodiments of the present invention.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
fig. 1 is a schematic structural diagram of a synchronous monitoring device for multiple physical quantities of a transformer according to an embodiment of the present invention.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
A specific embodiment of the present invention will be described in more detail below with reference to fig. 1. While specific embodiments of the invention are shown in the drawings, it will be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The following description is of the preferred embodiment of the invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be given by way of example with reference to the accompanying drawings, and the drawings do not limit the embodiments of the present invention.
For better understanding, the transformer multi-physical quantity synchronous monitoring device comprises,
the neutral point current measuring module is connected with the transformer to be measured to generate a neutral point current signal;
the temperature sensor is connected with the transformer to be tested to generate a temperature signal;
a noise sensor measuring a transformer to be measured to generate a noise signal;
the vibration sensor is connected with the transformer to be tested to generate a vibration signal;
a multi-physical quantity synchronous analyzer which is respectively connected with the neutral point current measuring module, the temperature sensor, the noise sensor and the vibration sensor through input ends to synchronously process the neutral point current signal, the temperature signal, the noise signal and the vibration signal, the output end of the multi-physical quantity synchronous analyzer is connected with a display to output processing information,
a display that displays the processing information in multiple channels.
In a preferred embodiment of the device for synchronously monitoring multiple physical quantities of the transformer, the vibration sensor comprises eight acceleration sensors, and the acceleration sensors are connected with the first port to the eighth port of the input end through coaxial cables.
In a preferred embodiment of the device for synchronously monitoring multiple physical quantities of the transformer, the neutral point current measuring module includes an ac/dc probe and a coaxial cable, and the coaxial cable is connected to the ninth port of the input end.
In a preferred embodiment of the synchronous monitoring device for multiple physical quantities of the transformer, the noise sensor and the voltage transformer are arranged at equal intervals, and are connected with the tenth port of the input end through a coaxial cable.
In a preferred embodiment of the synchronous monitoring device for multiple physical quantities of the transformer, the temperature sensor includes a conversion unit for converting a temperature signal into an electrical signal, and the conversion unit is connected to the eleventh port of the input end via a coaxial cable.
In a preferred embodiment of the device for synchronously monitoring multiple physical quantities of the transformer, the vibration sensor comprises a plurality of acceleration sensors magnetically attracted to the surface of the transformer.
In a preferred embodiment of the device for synchronously monitoring multiple physical quantities of the transformer, the acceleration sensors are symmetrically arranged.
In a preferred embodiment of the device for synchronously monitoring multiple physical quantities of the transformer, the multiple physical quantity synchronous analyzer is connected with the display through the twisted pair and the crystal head.
In a preferred embodiment of the synchronous monitoring device for multiple physical quantities of the transformer, the temperature sensor comprises a thermocouple sensor.
In a preferred embodiment of the synchronous monitoring device for multiple physical quantities of the transformer, the neutral point current measuring module includes a current clamp meter.
In order to further understand the utility model discloses, in an embodiment, as shown in fig. 1, a synchronous monitoring devices of many physical quantities of transformer includes magnetism and inhales formula acceleration sensor group, temperature sensor, noise sensor, neutral point current measurement module, many physical quantities synchronous analysis appearance and display.
The magnetic type acceleration sensor group is connected with ports 1 to 8 of the multi-physical quantity synchronous analyzer. It should be noted that 8 magnetic-type acceleration sensors are attached to the surface of the transformer box body according to a certain arrangement mode, so that vibration characteristics of eight points can be collected simultaneously, and the recognition of integral vibration on the transformer box body is important.
The neutral point current testing module consists of a high-precision alternating current and direct current probe and a coaxial cable, and the coaxial cable is connected to a port 9 of the multi-physical quantity synchronous analyzer.
The noise sensor is connected to a port 10 of the multi-physical quantity synchronous analyzer through a coaxial cable. In order to improve the effectiveness of the data of the noise sensor, the measurement needs to be carried out according to a specific mode. Due to the Doppler effect, noise values measured at different distances are different, so that the measurement needs to be carried out according to the same distance, data measured by transformers in different scenes are comparable, and convenience is brought to data analysis.
The temperature sensor converts the temperature signal into an electrical signal and is connected to the multi-physical-quantity synchronous analyzer through a coaxial cable.
The display can receive data of the multi-physical quantity synchronous analyzer and perform multi-channel display.
The embodiment of the utility model provides an in, it is to explain, four data acquisition module simultaneous acquisition data of group, with vibration acceleration, noise, temperature, data such as neutral point electric current are unified to be turned into the electric quantity and get into many physical quantities synchronous analysis appearance and carry out the analysis. Meanwhile, the device is connected to a display through a twisted pair, so that synchronous acquisition and synchronous multi-channel display can be realized. Through the above description, the operator can obtain the box vibration, noise, box temperature and neutral point current data of the transformer in real time. If the transformer is monitored to be in an abnormal state, measures can be taken in time, and particularly, whether the direct current magnetic biasing phenomenon occurs or not and the magnetic biasing degree can be monitored in a targeted mode. The operating personnel can find the weak link of the transformer operation in real time, and provide guidance direction for the transformer fault diagnosis.
In one embodiment, the multi-physical-quantity synchronous monitoring device of the transformer comprises a magnetic absorption type acceleration sensor group, a transformer neutral point current measuring module, a noise sensor, a temperature sensor, an oscillography module, a multi-physical-quantity synchronous analyzer and a display. The magnetic type acceleration sensor is connected with a port 1 to a port 8 of the multi-physical quantity synchronous analyzer through a coaxial cable, the neutral point current measuring module is connected with the port 9 through the coaxial cable, the noise sensor is connected with the port 10 through the coaxial cable, and the temperature sensor is connected with the port 11.
In one embodiment, the neutral point current measuring module adopts a CA alternating current and direct current probe, and is respectively connected to the multi-physical quantity synchronous analyzer and the oscilloscope through the amplifier and the coaxial cable.
In one embodiment, the noise sensor operates at a distance of 1m from the transformer tank 1m according to the relevant standard.
In one embodiment, the synchronous monitoring device for the multiple physical quantities of the transformer is provided with a plurality of acceleration sensors which are arranged at different positions.
In one embodiment, all the collected physical quantities of the transformer multi-physical-quantity synchronous monitoring device are synchronously collected and analyzed.
In one embodiment, the converted data of each physical quantity can be visually displayed on the display. In particular, time domain data and frequency domain data of the vibration signal can be displayed.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A synchronous monitoring device for multiple physical quantities of a transformer is characterized by comprising,
the neutral point current measuring module is connected with the transformer to be measured to generate a neutral point current signal;
the temperature sensor is connected with the transformer to be tested to generate a temperature signal;
a noise sensor measuring a transformer to be measured to generate a noise signal;
the vibration sensor is connected with the transformer to be tested to generate a vibration signal;
a multi-physical quantity synchronous analyzer which is respectively connected with the neutral point current measuring module, the temperature sensor, the noise sensor and the vibration sensor through input ends to synchronously process the neutral point current signal, the temperature signal, the noise signal and the vibration signal, the output end of the multi-physical quantity synchronous analyzer is connected with a display to output processing information,
a display that displays the processing information in multiple channels.
2. The transformer multi-physical quantity synchronous monitoring device according to claim 1, wherein the vibration sensors comprise eight acceleration sensors which are connected with the first port to the eighth port of the input end via coaxial cables.
3. The transformer multi-physical-quantity synchronous monitoring device according to claim 1, wherein the neutral point current measuring module comprises an alternating current/direct current probe and a coaxial cable, and the coaxial cable is connected with the ninth port of the input end.
4. The transformer multi-physical quantity synchronous monitoring device according to claim 1, wherein the noise sensor and the voltage transformer are arranged at equal intervals, and are connected with the tenth port of the input end through a coaxial cable.
5. The transformer multi-physical quantity synchronous monitoring device according to claim 1, wherein the temperature sensor comprises a conversion unit for converting a temperature signal into an electrical signal, and the conversion unit is connected with the eleventh port of the input end through a coaxial cable.
6. The device for synchronously monitoring multiple physical quantities of a transformer according to claim 1, wherein the vibration sensor comprises a plurality of acceleration sensors magnetically attached to the surface of the transformer.
7. The synchronous monitoring device for multiple physical quantities of transformer according to claim 6, characterized in that the acceleration sensors are symmetrically arranged.
8. The transformer multi-physical quantity synchronous monitoring device according to claim 1, wherein the multi-physical quantity synchronous analyzer is connected with a display through a twisted pair and a crystal head.
9. The synchronous monitoring device for multiple physical quantities of transformer according to claim 1, characterized in that the temperature sensor comprises a thermocouple sensor.
10. The transformer multi-physical-quantity synchronous monitoring device according to claim 1, wherein the neutral point current measuring module comprises a current clamp meter.
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| CN202020783805.9U CN212903306U (en) | 2020-05-12 | 2020-05-12 | Multi-physical quantity synchronous monitoring device for transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970710A (en) * | 2021-10-26 | 2022-01-25 | 广东电网有限责任公司佛山供电局 | Method and system for monitoring direct-current magnetic bias running state of power transformer |
| CN114203210A (en) * | 2021-11-01 | 2022-03-18 | 雅砻江流域水电开发有限公司 | Sound vibration temperature signal synchronous acquisition method and device for hydraulic turbine set |
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2020
- 2020-05-12 CN CN202020783805.9U patent/CN212903306U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970710A (en) * | 2021-10-26 | 2022-01-25 | 广东电网有限责任公司佛山供电局 | Method and system for monitoring direct-current magnetic bias running state of power transformer |
| CN113970710B (en) * | 2021-10-26 | 2023-06-09 | 广东电网有限责任公司佛山供电局 | Method and system for monitoring DC magnetic bias running state of power transformer |
| CN114203210A (en) * | 2021-11-01 | 2022-03-18 | 雅砻江流域水电开发有限公司 | Sound vibration temperature signal synchronous acquisition method and device for hydraulic turbine set |
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