CN202305693U - Transformer bushing on-line monitor - Google Patents
Transformer bushing on-line monitor Download PDFInfo
- Publication number
- CN202305693U CN202305693U CN2011203883889U CN201120388388U CN202305693U CN 202305693 U CN202305693 U CN 202305693U CN 2011203883889 U CN2011203883889 U CN 2011203883889U CN 201120388388 U CN201120388388 U CN 201120388388U CN 202305693 U CN202305693 U CN 202305693U
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- microprocessor
- transformer
- utility
- model
- bushing shell
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Abstract
The utility model provides a transformer bushing on-line monitor, comprising a microprocessor (1), a three-phase current signal acquisition circuit (2) connected with the microprocessor (1) via an A/D converting circuit I (4), and also a three-phase PT voltage signal acquisition circuit (3) connected with the microprocessor (1) via an A/D converting circuit II (5). The transformer bushing on-line monitor of the utility model has the beneficial effect of on-line detecting the dielectric loss value, capacitance and leakage current case of the transformer bushing quantitatively.
Description
Technical field
The utility model relates to electronic applications, relates in particular to a kind of electronic monitoring instrument, specifically is meant a kind of bushing shell for transformer on-line monitoring appearance.
Background technology
The safe operation of high-tension power transmission and transformation equipment is the key factor that influences power system security, stable and economical operation, and high-tension apparatus generation insulation fault not only can cause equipment damage itself, but also can cause many-sided loss.Electric pressure is increasingly high, place capacity is increasing, makes that the time of each maintenance is longer, and not only recondition expense is high, and the reliability of influence power supply.Under Power Market, the user requires increasingly high power supply reliability, and is appreciable sometimes by the loss of outage that equipment failure or inspection and repair shop cause.Therefore should improve the operational reliability of equipment, guarantee higher power supply reliability again, this just has higher requirement to the maintenance of power equipment.
Traditional prophylactic repair exist the test period long, intensity big and shortcoming such as validity difference, is difficult to satisfy the requirement of electric system to reliability, progressively replaces prophylactic repair to become the inexorable trend of power system device maintenance with repair based on condition of component.The precondition that realizes repair based on condition of component is to realize on-line monitoring, has only the insulation status of grasping operational outfit through various means in time, exactly, could wait to confirm repair time and maintenance strategy according to equipment self characteristics and variation tendency.
The bushing shell for transformer monitor then is a kind of monitoring bushing shell for transformer insulation status monitoring instrument; Realized charged on-line monitoring; But present bushing shell for transformer on-line monitoring appearance is owing to only detect the three-phase leakage current through sleeve pipe usually; Thereby can only detect bushing shell for transformer Jie damage value situation of change qualitatively; Size that can not quantitative reaction Jie damage value, and the situation of reaction Jie damage value that existing bushing shell for transformer on-line monitoring appearance can only be single can not reflect the situation of capacitance of bushing, leakage current.
The utility model content
The technical matters that the utility model will solve is, provide a kind of can quantitative online detection bushing shell for transformer Jie damage value, the bushing shell for transformer on-line monitoring appearance of electric capacity and leakage current situation.
The technical solution of the utility model is; A kind of bushing shell for transformer on-line monitoring appearance is provided; Comprise microprocessor and the three-phase current signal Acquisition Circuit that is connected with microprocessor through A/D change-over circuit I, also comprise the three-phase PT voltage signal acquisition circuit that is connected with microprocessor through A/D change-over circuit II.
As preferably, what be connected with microprocessor also has a kind of or combination in display, printer and the keyboard.
As preferably, what be connected with microprocessor 1 also is provided with USB interface 9.
In sum; The utility model is when the insulation situation of monitoring bushing shell for transformer; Monitor the situation of change of three-phase PT voltage simultaneously; Can calculate hi-line voltage and the phase change situation learnt through the situation of change of PT voltage, through mathematical modeling easily quantitative Analysis learn bushing shell for transformer Jie damage value, electric capacity and leakage current situation; In addition, the utility model also can be provided with keyboard to realize the setting of parameter, carries out the printing of data through display and printer, also can utilize the storage of USB memory device realization test data etc. through the USB interface that is provided with.
Description of drawings
Fig. 1 is the circuit structure schematic block diagram of the bushing shell for transformer on-line monitoring appearance of the utility model.
Shown in the figure:
1, microprocessor, 2, the three-phase current signal Acquisition Circuit, 3, three-phase PT voltage signal acquisition circuit, 4, A/D change-over circuit I, 5, A/D change-over circuit II, 6, display, 7, printer, 8, keyboard, 9, USB interface.
Embodiment
For the technical scheme of the utility model better is described, be described in detail below in conjunction with the embodiment of accompanying drawing to the utility model.
Shown in accompanying drawing 1; A kind of bushing shell for transformer on-line monitoring appearance; Comprise microprocessor 1 and the three-phase current signal Acquisition Circuit 2 that is connected with microprocessor 1 through A/D change-over circuit I4, also comprise the three-phase PT voltage signal acquisition circuit 3 that is connected with microprocessor 1 through A/D change-over circuit II5; In the present embodiment, what be connected with microprocessor 1 also has display 6, printer 7 and keyboard 8, and what be connected with microprocessor 1 also is provided with USB interface 9.
Should explain that also employed being of each circuit module of the utility model has the common circuit of electronic technology now, so its particular circuit configurations is not described in detail in this.
In the above-described embodiments; A kind of preferred forms of the utility model is described, obviously, under the inventive concept of the utility model; Still can make a lot of variations and improvement, also can establish and not establish with USB interface 9 according to actual conditions like described printer 7.At this, should explain that any change of under the inventive concept of the utility model, being made all will fall in the protection domain of the utility model.
Claims (3)
1. bushing shell for transformer on-line monitoring appearance; Comprise microprocessor (1) and the three-phase current signal Acquisition Circuit (2) that is connected with microprocessor (1) through A/D change-over circuit I (4), it is characterized in that: also comprise the three-phase PT voltage signal acquisition circuit (3) that is connected with microprocessor (1) through A/D change-over circuit II (5).
2. bushing shell for transformer on-line monitoring appearance according to claim 1 is characterized in that: a kind of or combination in display (6), printer (7) and the keyboard (8) in addition that is connected with microprocessor (1).
3. bushing shell for transformer on-line monitoring appearance according to claim 1 is characterized in that: what be connected with microprocessor (1) also is provided with USB interface (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203883889U CN202305693U (en) | 2011-10-13 | 2011-10-13 | Transformer bushing on-line monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203883889U CN202305693U (en) | 2011-10-13 | 2011-10-13 | Transformer bushing on-line monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305693U true CN202305693U (en) | 2012-07-04 |
Family
ID=46374565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203883889U Expired - Fee Related CN202305693U (en) | 2011-10-13 | 2011-10-13 | Transformer bushing on-line monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526372A (en) * | 2016-10-27 | 2017-03-22 | 成都亚联科科技有限公司 | Automatic transformer function characteristic detection device |
| CN110208607A (en) * | 2019-07-05 | 2019-09-06 | 杭州西湖电子研究所 | A kind of detection method of relative capacity ratio |
-
2011
- 2011-10-13 CN CN2011203883889U patent/CN202305693U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526372A (en) * | 2016-10-27 | 2017-03-22 | 成都亚联科科技有限公司 | Automatic transformer function characteristic detection device |
| CN110208607A (en) * | 2019-07-05 | 2019-09-06 | 杭州西湖电子研究所 | A kind of detection method of relative capacity ratio |
| CN110208607B (en) * | 2019-07-05 | 2021-07-13 | 杭州西湖电子研究所 | Method for detecting relative capacitance ratio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20131013 |