CN110687483A - High-voltage distribution transformer on-line monitoring and fault diagnosis device - Google Patents
High-voltage distribution transformer on-line monitoring and fault diagnosis device Download PDFInfo
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- CN110687483A CN110687483A CN201911026720.4A CN201911026720A CN110687483A CN 110687483 A CN110687483 A CN 110687483A CN 201911026720 A CN201911026720 A CN 201911026720A CN 110687483 A CN110687483 A CN 110687483A
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Abstract
The invention discloses an on-line monitoring and fault diagnosis device for a high-voltage distribution transformer, which comprises a temperature sampling signal circuit, a voltage and current sampling signal circuit, a signal processor, a signal conversion unit circuit, a square wave signal processing circuit, a communication module, a protection action circuit and a display circuit. And finally, carrying out online debugging and result analysis on the whole system.
Description
Technical Field
The invention relates to the technical field of high-voltage power, in particular to an on-line monitoring and fault diagnosis device for a high-voltage distribution transformer.
Background
The 10kV distribution transformer on-line monitoring and fault diagnosis device is mainly used for realizing the on-line monitoring of the 10kV distribution transformer by acquiring the temperature, the electrical parameters (voltage, current, power factor and frequency) and the external environment parameters of a transformer winding through a high-precision sensor, and determining whether the distribution transformer is in a normal operation state or not by adopting a rapid automatic tracking algorithm according to the acquired parameters. If the 10kV distribution transformer is in an abnormal operation state, the microprocessor is used for judging the ill condition of the distribution transformer by adopting an artificial intelligence diagnosis method, and informing the control center through a network to realize the rapid processing of the distribution transformer, so that the safe and reliable operation of the 10kV distribution transformer is effectively ensured.
Disclosure of Invention
The present invention is directed to solve the above problems and to provide an online monitoring and fault diagnosis device for a high voltage distribution transformer. A10 kV distribution transformer on-line monitoring and fault diagnosis device is designed based on the low-cost and high-precision idea, and the research and development of the device can be helpful for the large-scale use of the distribution transformer on-line monitoring device, so that the electric energy loss is greatly reduced.
The invention realizes the purpose through the following technical scheme:
the temperature sampling circuit comprises a temperature sampling signal circuit, a voltage and current sampling signal circuit, a signal processor, a signal conversion unit circuit, a square wave signal processing circuit, a communication module, a protection action circuit and a display circuit, wherein the signal output end of the temperature sampling signal circuit is connected with the temperature signal input end of the signal processor, the signal output end of the voltage and current sampling signal circuit is respectively connected with the voltage and current signal input end of the signal processor and the signal input end of the signal conversion unit circuit, the signal output end of the signal conversion unit circuit is connected with the signal input end of the square wave signal processing circuit, the signal output end of the square wave signal processing circuit is connected with the square wave signal acquisition end of the signal processor, the communication module is connected with the communication end of the signal processor, and the protection signal output end of the signal processor is connected with the protection action circuit, and the display signal output end of the signal processor is connected with the display circuit.
The invention has the beneficial effects that:
compared with the prior art, the invention adopts a microprocessor as a core control component, designs various matched functional modules around the microprocessor, including a transformer parameter measuring module, a signal conversion module, a waveform processing module and the like, designs a complete circuit schematic diagram and a functional flow diagram, and completes the software and hardware design and function realization of each functional module. And finally, carrying out online debugging and result analysis on the whole system.
Drawings
Fig. 1 is an overall structural framework diagram of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1: the temperature sampling circuit comprises a temperature sampling signal circuit 2, a voltage and current sampling signal circuit 3, a signal processor 1, a signal conversion unit circuit 4, a square wave signal processing circuit 5, a communication module 6, a protection action circuit 7 and a display circuit 8, wherein the signal output end of the temperature sampling signal circuit is connected with the temperature signal input end of the signal processor, the signal output end of the voltage and current sampling signal circuit is respectively connected with the voltage and current signal input end of the signal processor and the signal input end of the signal conversion unit circuit, the signal output end of the signal conversion unit circuit is connected with the signal input end of the square wave signal processing circuit, the signal output end of the square wave signal processing circuit is connected with the square wave signal acquisition end of the signal processor, and the communication module is connected with the communication end of the signal processor, and the protection signal output end of the signal processor is connected with the protection action circuit, and the display signal output end of the signal processor is connected with the display circuit.
If the transformer breaks down, the temperature sensor sends the collected temperature signals and the voltage and current signals collected by the voltage transformer and the circuit transformer circuit to the processor 1 after A/D conversion, the collected voltage and current are changed into two paths of square signals with the same frequency and the same phase through the signal conversion unit circuit 4, the phase difference of the two paths of square signals is the phase difference of the voltage and the current, and the square signals pass through the square signal processing circuit 5 to obtain the frequency and the power factor of the output side of the transformer. After calculation and analysis of the processor 1, a protection action instruction is obtained, and the instruction is transmitted to the protection action circuit 7 through the serial port of the processor 1 to give an alarm sound, so that a worker can find the instruction. Meanwhile, after the signals collected by the sampling circuit are processed by the signal processor 1 through calculation and analysis, the collected signals and the data obtained by processing and calculation are displayed through the display circuit 8, so that the working personnel can inquire the running condition of the transformer in a certain time period at any time, and the communication module 4 is arranged for the convenience of operation with an upper computer.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a high voltage distribution transformer on-line monitoring and fault diagnosis device which characterized in that: the temperature sampling circuit comprises a temperature sampling signal circuit, a voltage and current sampling signal circuit, a signal processor, a signal conversion unit circuit, a square wave signal processing circuit, a communication module, a protection action circuit and a display circuit, wherein the signal output end of the temperature sampling signal circuit is connected with the temperature signal input end of the signal processor, the signal output end of the voltage and current sampling signal circuit is respectively connected with the voltage and current signal input end of the signal processor and the signal input end of the signal conversion unit circuit, the signal output end of the signal conversion unit circuit is connected with the signal input end of the square wave signal processing circuit, the signal output end of the square wave signal processing circuit is connected with the square wave signal acquisition end of the signal processor, the communication module is connected with the communication end of the signal processor, and the protection signal output end of the signal processor is connected with the protection action circuit, and the display signal output end of the signal processor is connected with the display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026720.4A CN110687483A (en) | 2019-10-26 | 2019-10-26 | High-voltage distribution transformer on-line monitoring and fault diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026720.4A CN110687483A (en) | 2019-10-26 | 2019-10-26 | High-voltage distribution transformer on-line monitoring and fault diagnosis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110687483A true CN110687483A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911026720.4A Pending CN110687483A (en) | 2019-10-26 | 2019-10-26 | High-voltage distribution transformer on-line monitoring and fault diagnosis device |
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| CN (1) | CN110687483A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201409016Y (en) * | 2009-02-13 | 2010-02-17 | 南京鼎牌电器有限公司 | Distribution transformer monitoring terminal device |
| CN101718820A (en) * | 2009-11-17 | 2010-06-02 | 安徽科大鲁能智能电网技术有限公司 | Power distribution transformer monitoring terminal and method for calculating current complex power precision thereof |
| CN101975881A (en) * | 2010-08-25 | 2011-02-16 | 太原理工大学 | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers |
| CN201984124U (en) * | 2011-01-28 | 2011-09-21 | 保定天威集团有限公司 | Intelligent online monitoring device for dry type transformer |
| CN103051057A (en) * | 2012-12-04 | 2013-04-17 | 河南省电力公司驻马店供电公司 | Transformer equipment state overhaul intelligent management monitoring system |
| CN203838239U (en) * | 2013-12-31 | 2014-09-17 | 温州市图盛科技有限公司 | Distribution transformer monitoring device |
| CN105375643A (en) * | 2015-12-21 | 2016-03-02 | 河海大学常州校区 | On-line monitoring device for power distribution transformer performance and monitoring method thereof |
| CN109803462A (en) * | 2019-03-20 | 2019-05-24 | 苏州工业园区海沃科技有限公司 | A kind of transformer dc heating power supply |
-
2019
- 2019-10-26 CN CN201911026720.4A patent/CN110687483A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201409016Y (en) * | 2009-02-13 | 2010-02-17 | 南京鼎牌电器有限公司 | Distribution transformer monitoring terminal device |
| CN101718820A (en) * | 2009-11-17 | 2010-06-02 | 安徽科大鲁能智能电网技术有限公司 | Power distribution transformer monitoring terminal and method for calculating current complex power precision thereof |
| CN101975881A (en) * | 2010-08-25 | 2011-02-16 | 太原理工大学 | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers |
| CN201984124U (en) * | 2011-01-28 | 2011-09-21 | 保定天威集团有限公司 | Intelligent online monitoring device for dry type transformer |
| CN103051057A (en) * | 2012-12-04 | 2013-04-17 | 河南省电力公司驻马店供电公司 | Transformer equipment state overhaul intelligent management monitoring system |
| CN203838239U (en) * | 2013-12-31 | 2014-09-17 | 温州市图盛科技有限公司 | Distribution transformer monitoring device |
| CN105375643A (en) * | 2015-12-21 | 2016-03-02 | 河海大学常州校区 | On-line monitoring device for power distribution transformer performance and monitoring method thereof |
| CN109803462A (en) * | 2019-03-20 | 2019-05-24 | 苏州工业园区海沃科技有限公司 | A kind of transformer dc heating power supply |
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Application publication date: 20200114 |
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