CN203909210U - Loosening monitoring device of power transformer winding - Google Patents
Loosening monitoring device of power transformer winding Download PDFInfo
- Publication number
- CN203909210U CN203909210U CN201420251318.2U CN201420251318U CN203909210U CN 203909210 U CN203909210 U CN 203909210U CN 201420251318 U CN201420251318 U CN 201420251318U CN 203909210 U CN203909210 U CN 203909210U
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- Prior art keywords
- microprocessor
- data
- monitoring device
- winding
- interface
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 title claims abstract description 31
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 230000003993 interaction Effects 0.000 claims abstract description 9
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a loosening monitoring device of a power transformer winding. The loosening monitoring device comprises a vibration sensor, a data acquisition circuit and a memory. The vibration sensor is arranged between a high-voltage binding post and a low-voltage binding post, which are on the upper surface of a transformer box body. The data acquisition circuit is formed by a man-machine interaction module and an external data port by taking a microprocessor as a core. The man-human interaction module comprises a minitype key and a display module which are separately connected to the microprocessor. The external data port is a data port circuit satisfying the RS232 industry serial data port standard and the USB serial data bus standard. A data receiving port and a data sending port are separately connected with a data port of the microprocessor. The digital output end of the vibration sensor is connected with the digital port of the microprocessor. The memory is connected with the external data port. The loosening monitoring device is simple in structure, easy to implement and convenient to operate.
Description
Technical field
The utility model relates to the loosening device of a kind of Monitoring Power Transformer winding, belongs to power transformer safety monitoring technology field.
Background technology
Power transformer is since dispatching from the factory, its winding compresses degree to be reduced gradually with transport, installation, operational process and external short circuit accident, causes winding loosening, has reduced transformer and has resisted the ability of short-circuit current rush and produce huge threat.
The vibration that causes transformer-cabinet is mainly derived from the vibration of transformer body and the vibration of cooling system device.And the vibration of body mainly comprises the vibration of winding and iron core.The fundamental vibration frequency that cooling device causes is lower, has obviously different from transformer body vibration; After transformer energising operation, in winding, pass through electric current, in iron core and winding, formed magnetic field.Transformer core vibration becomes positive correlation with voltage squared.In the time that voltage is very low, the vibration of iron core can be ignored, and vibration is mainly derived from basket vibration, and the vibration of winding is under the impact of leakage inductance, and Interaction Law of Electric Current in winding produces that electric power causes, conventionally electric power be proportional to electric current square.
In order to ensure the normal operation of power transformer, prevent loosening the causing property faults such as winding gross distortion or short circuit in winding that finally develop into of winding, but be not also specifically designed to the loosening device of monitoring Transformer Winding at present.
Utility model content
The technical problems to be solved in the utility model is, propose a kind of simple in structure, easily realize and the easy to operate loosening monitoring device of Winding in Power Transformer.
The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of Winding in Power Transformer is become flexible monitoring device, and described transformer-cabinet upper surface is provided with the row's high tension terminal and the row's low tension terminal that are parallel to each other; Described monitoring device involving vibrations sensor, data acquisition circuit and storer, described vibration transducer is arranged on the position between high tension terminal and the low tension terminal of transformer-cabinet upper surface; Described data acquisition circuit is equipped with human-computer interaction module, external data interface composition taking microprocessor as core, wherein, described human-computer interaction module comprises the miniature keyboard and the display module that are connected to respectively microprocessor, described external data interface is one to meet the data interface circuit of RS232 industrial series data-interface standard and USB serial data bus standard, and its data transmit-receive port is connected with the data-interface of microprocessor respectively; The digital output end of described vibration transducer is connected with the digital interface of microprocessor, and described storer is connected with external data interface.
The utility model in use, by step down side three-phase short circuit in winding, regulate impressed voltage in high-pressure side by pressure regulator, while making low-pressure side short-circuit current approach rated current, now measure vibration data, and in the enterprising line number of display module according to the show, whether loosening for judging intuitively winding, data are stored in storer simultaneously, for further data analysis, be convenient to judge more accurately that winding becomes flexible situation.
As preferred version, described vibration transducer is arranged on the position of transformer-cabinet upper surface near low tension terminal.Because the vibration of low-pressure side winding is conventionally large than high-pressure side winding, so vibration transducer is arranged on to the position of transformer-cabinet upper surface near low tension terminal, the result of monitoring is more accurate.
As preferred version, described vibration transducer is CA-YD-103 vibration acceleration sensor.
In order to improve the performance of data acquisition circuit, described microprocessor can adopt the high speed microprocessor of ARM framework.
The beneficial effect that the utility model brings is: the utility model is by arranging vibration transducer in transformer tank surface, and the loosening situation of the vibration data recording by vibration transducer monitoring winding, simple in structure, easily realize, easy to operate, and monitoring result is reliable, be applicable to large-scale promotion application.
Brief description of the drawings
Be described further of the present utility model below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Embodiment
The loosening monitoring device of Winding in Power Transformer of the present embodiment as shown in Figure 1, is provided with the row high tension terminal 3-2 and the row's low tension terminal 3-3 that are parallel to each other at transformer-cabinet 3-1 upper surface; This monitoring device involving vibrations sensor 4, data acquisition circuit 1 and storer 2, be adsorbed on the input end of vibration transducer 4 by magnet the middle position of transformer-cabinet 3-1 upper surface securely; Data acquisition circuit 1 is equipped with human-computer interaction module 1-2, external data interface 1-3 composition taking microprocessor 1-1 as core, wherein, human-computer interaction module 1-1 comprises the miniature keyboard and the display module (not shown in figure 1) that are connected to respectively microprocessor 1-1.External data interface 1-3 one meets the data interface circuit of RS232 industrial series data-interface standard and USB serial data bus standard, and its data transmit-receive port is connected with the data-interface of microprocessor 1-1 respectively; The digital output end of vibration transducer 4 is connected with the digital interface of microprocessor 1-1, and storer 2 is connected with external data interface 1-3.
In the present embodiment, the model of transformer is S9-M-100/10, and vibration transducer adopts CA-YD-103 vibration acceleration sensor, and microprocessor adopts ARM 7 general processors.
The vibration of low-pressure side winding is conventionally large than high-pressure side winding, and therefore, in order to monitor more accurately the loosening situation of winding, the present embodiment can be arranged on vibration transducer 4 position of transformer-cabinet 3-1 upper surface near low tension terminal 3-3.
The utility model is not limited to the various embodiments described above.All employings are equal to replaces the technical scheme forming, and all drops on the protection domain of the utility model requirement.
Claims (4)
1. the loosening monitoring device of Winding in Power Transformer, described transformer-cabinet upper surface is provided with the row's high tension terminal and the row's low tension terminal that are parallel to each other; It is characterized in that: described monitoring device involving vibrations sensor, data acquisition circuit and storer, described vibration transducer is arranged on the position between high tension terminal and the low tension terminal of transformer-cabinet upper surface; Described data acquisition circuit is equipped with human-computer interaction module, external data interface composition taking microprocessor as core, wherein, described human-computer interaction module comprises the miniature keyboard and the display module that are connected to respectively microprocessor, described external data interface is one to meet the data interface circuit of RS232 industrial series data-interface standard and USB serial data bus standard, and its data transmit-receive port is connected with the data-interface of microprocessor respectively; The digital output end of described vibration transducer is connected with the digital interface of microprocessor, and described storer is connected with external data interface.
2. the loosening monitoring device of Winding in Power Transformer according to claim 1, is characterized in that: described vibration transducer is arranged on the position of transformer-cabinet upper surface near low tension terminal.
3. the loosening monitoring device of Winding in Power Transformer according to claim 1, is characterized in that: described vibration transducer is CA-YD-103 vibration acceleration sensor.
4. the loosening monitoring device of Winding in Power Transformer according to claim 1, is characterized in that: described microprocessor is the microprocessor of ARM framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251318.2U CN203909210U (en) | 2014-05-16 | 2014-05-16 | Loosening monitoring device of power transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251318.2U CN203909210U (en) | 2014-05-16 | 2014-05-16 | Loosening monitoring device of power transformer winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203909210U true CN203909210U (en) | 2014-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251318.2U Expired - Lifetime CN203909210U (en) | 2014-05-16 | 2014-05-16 | Loosening monitoring device of power transformer winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203909210U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137247A (en) * | 2015-09-21 | 2015-12-09 | 江苏省电力公司南京供电公司 | Transformer winding state monitoring auxiliary apparatus |
| CN105300585A (en) * | 2015-10-09 | 2016-02-03 | 河海大学 | Power transformer winding axial pretightening force monitoring method based on excitation current |
| CN105823951A (en) * | 2016-06-08 | 2016-08-03 | 国网辽宁省电力有限公司电力科学研究院 | Pressing force characteristic diagnostic system of power transformer winding |
| CN108088546A (en) * | 2017-12-03 | 2018-05-29 | 中国直升机设计研究所 | Amplifier terminals loosen recognition methods under a kind of rotor platform working speed state |
| CN108106827A (en) * | 2017-12-03 | 2018-06-01 | 中国直升机设计研究所 | A kind of rotor platform rises amplifier terminals under rotary regimes and loosens recognition methods |
-
2014
- 2014-05-16 CN CN201420251318.2U patent/CN203909210U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137247A (en) * | 2015-09-21 | 2015-12-09 | 江苏省电力公司南京供电公司 | Transformer winding state monitoring auxiliary apparatus |
| CN105137247B (en) * | 2015-09-21 | 2018-07-06 | 江苏省电力公司南京供电公司 | Transformer winding state monitors auxiliary device |
| CN105300585A (en) * | 2015-10-09 | 2016-02-03 | 河海大学 | Power transformer winding axial pretightening force monitoring method based on excitation current |
| CN105300585B (en) * | 2015-10-09 | 2017-12-15 | 河海大学 | A kind of Winding in Power Transformer axial pretightening force monitoring methods based on exciting current |
| CN105823951A (en) * | 2016-06-08 | 2016-08-03 | 国网辽宁省电力有限公司电力科学研究院 | Pressing force characteristic diagnostic system of power transformer winding |
| CN108088546A (en) * | 2017-12-03 | 2018-05-29 | 中国直升机设计研究所 | Amplifier terminals loosen recognition methods under a kind of rotor platform working speed state |
| CN108106827A (en) * | 2017-12-03 | 2018-06-01 | 中国直升机设计研究所 | A kind of rotor platform rises amplifier terminals under rotary regimes and loosens recognition methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |