CN202305587U - Standard interface device for leading out leakage current signal of bushing of power transformer - Google Patents
Standard interface device for leading out leakage current signal of bushing of power transformer Download PDFInfo
- Publication number
- CN202305587U CN202305587U CN2011204234170U CN201120423417U CN202305587U CN 202305587 U CN202305587 U CN 202305587U CN 2011204234170 U CN2011204234170 U CN 2011204234170U CN 201120423417 U CN201120423417 U CN 201120423417U CN 202305587 U CN202305587 U CN 202305587U
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- stainless steel
- sleeve pipe
- pipe assembly
- steel sleeve
- conducting rod
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of on-line monitoring of a power transformer and discloses a standard interface device for leading out a leakage current signal of a bushing of the power transformer. The device comprises a stainless steel bushing assembly, a copper conductive rod, an epoxy insulating sleeve and a stainless steel bushing assembly base, wherein the copper conductive rod is sleeved in the stainless steel bushing assembly; the epoxy insulating sleeve is arranged between the stainless steel bushing assembly and the copper conductive rod; the stainless steel bushing assembly base is fixed at the right end of the stainless steel bushing assembly and used for pressing the copper conductive rod in the stainless steel bushing assembly; an epoxy insulating pad is arranged between the stainless steel bushing assembly base and the copper conductive rod; and two inner bores which are not communicated are formed in the left and right ends of the copper conductive rod. By adoption of the standard interface device, the leakage current signal of the bushing of the power transformer can be monitored on line safely and effectively.
Description
Technical field
The utility model belongs to power transformer on-line monitoring field, more particularly, relates to a kind of power transformer casing leak current signal and draws the standard interface device.
Background technology
According to State Grid Corporation of China, the unified strong intelligent grid planning of Southern Power Grid Company construction, the digital transformer substation construction is the important component part of strong intelligent grid, and the high voltage electric power equip ment on-line monitoring is the basis of digital transformer substation.Power transformer is as the hinge equipment of electric system, and its reliability of operation is directly connected to the safety of electric system with stable, and sleeve pipe is one of nucleus equipment of transformer, and the quality of its state directly has influence on the safe operation of electrical network.Therefore, it is imperative bushing shell for transformer to be carried out on-line monitoring.Bushing shell for transformer is carried out leakage current, Jie that on-line monitoring is exactly the last screen of monitoring bushing shell for transformer undermine electric capacity.At present, bushing shell for transformer end screen all is directly grounded in the transformer operational process, can't end screen leakage current signal be provided for the on-line monitoring system sensor.Therefore, need a kind ofly can the device that signal is drawn to be shielded at the end, this device must safety, reliable, itself have various safeguard measures, and the normal safe operation that does not influence bushing shell for transformer is checked with daily servicing, experiment work.
The power transformer sleeve pipe of unit operations such as national grid, south electric network is mainly provided by production firms such as ABB, MWB, Reynolds that, west, Xi'an electroceramics companies at present; The market share is more than 80%; Without exception, the bushing shell for transformer earthing device of above-mentioned manufacturers produce all adopts the frame mode of built-in closed and external closed ground connection, and sleeve pipe earthing device outward appearance, the structure of each manufacturer are different; Installation dimension is not of uniform size, and on-line monitoring can't be drawn signal.Units such as national grid, south electric network require the sleeve pipe earthing device is improved design at present, satisfy the demand that sleeve pipe is implemented on-line monitoring.
Summary of the invention
The technical matters that solves
To the deficiency of prior art, the utility model provides a kind of power transformer casing leak current signal to draw the standard interface device, uses the utility model can realize power transformer sleeve pipe on-line monitoring safely and effectively.
Technical scheme
The purpose of the utility model realizes through following technical scheme:
A kind of power transformer casing leak current signal is drawn the standard interface device; It comprises stainless steel sleeve pipe assembly, copper conducting rod, epoxy insulation sleeve and stainless steel sleeve pipe assembly base; Said copper conducting rod be enclosed within the stainless steel sleeve pipe assembly in; Be provided with the epoxy insulation sleeve between said stainless steel sleeve pipe assembly and the said copper conducting rod; Said stainless steel sleeve pipe assembly base is fixed on the right-hand member of stainless steel sleeve pipe assembly, and stainless steel sleeve pipe assembly base is pressed on the copper conducting rod in the stainless steel sleeve pipe assembly, is provided with the epoxy insulation pad between said stainless steel sleeve pipe assembly base and the copper conducting rod.The left end of described copper conducting rod and right-hand member are provided with two disconnected endoporus, as the introducing of casing leak current signal with draw signal end.
When the stainless steel sleeve pipe assembly is fixed on the power transformer body by joint; The right-hand member of copper conducting rod closely contacts with bottom shielding of bushing output terminal copper rod as leading-in end; The left end of copper conducting rod is as exit, and the endoporus of exit inserts the ground wire cable and draws, and wherein epoxy insulation sleeve, epoxy insulation pad are formed the sealing insulating space; Guarantee that copper conducting rod and stainless steel sleeve pipe assembly keep fully insulation, realize the output of casing leak current signal.
Beneficial effect
The utility model has the following advantages than prior art:
(1) uses the novel device of this use, realize the current signal that power transformer end screen leaks is transported in the on-line monitoring system sampling detector, so that implement on-line monitoring;
(2) use the novel device of this use, can not influence normal operation, daily servicing, inspection and the experiment work of power transformer sleeve pipe;
(3) the utility model simplicity of design, rational in infrastructure is convenient to produce, make.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Label declaration among the figure:
1, stainless steel sleeve pipe assembly; 2, epoxy insulation sleeve; 3, copper conducting rod; 4, epoxy insulation pad; 5, stainless steel sleeve pipe assembly base; 6, endoporus.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail.
As shown in Figure 1; A kind of power transformer casing leak current signal is drawn the standard interface device; It comprises stainless steel sleeve pipe assembly 1, copper conducting rod 3, epoxy insulation sleeve 2 and stainless steel sleeve pipe assembly base 5; Said copper conducting rod 3 be enclosed within stainless steel sleeve pipe assembly 1 in, be provided with epoxy insulation sleeve 2 between said stainless steel sleeve pipe assembly 1 and the said copper conducting rod 3, said stainless steel sleeve pipe assembly base 5 is fixed on the right-hand member of stainless steel sleeve pipe assembly 1; Stainless steel sleeve pipe assembly base 5 is pressed on copper conducting rod 3 in the stainless steel sleeve pipe assembly 1, is provided with epoxy insulation pad 4 between said stainless steel sleeve pipe assembly base 5 and the copper conducting rod 3.The left end of described copper conducting rod 3 and right-hand member are provided with two disconnected endoporus 6.The right-hand member of copper conducting rod 3 closely contacts with bottom shielding of bushing output terminal copper rod as leading-in end, and left end is as exit, and the endoporus 6 of exit inserts the ground wire cable and draws.
As shown in Figure 1; A kind of power transformer casing leak current signal is drawn the standard interface device; It comprises stainless steel sleeve pipe assembly 1, copper conducting rod 3, epoxy insulation sleeve 2 and stainless steel sleeve pipe assembly base 5; Said copper conducting rod 3 be enclosed within stainless steel sleeve pipe assembly 1 in, be provided with epoxy insulation sleeve 2 between said stainless steel sleeve pipe assembly 1 and the said copper conducting rod 3, said stainless steel sleeve pipe assembly base 5 is fixed on the right-hand member of stainless steel sleeve pipe assembly 1; Stainless steel sleeve pipe assembly base 5 is pressed on copper conducting rod 3 in the stainless steel sleeve pipe assembly 1, is provided with epoxy insulation pad 4 between said stainless steel sleeve pipe assembly base 5 and the copper conducting rod 3.The left end of described copper conducting rod 3 and right-hand member are provided with two disconnected endoporus 6.The size of 2 endoporus 6 is: diameter 4mm, degree of depth 14mm.The right-hand member of copper conducting rod 3 closely contacts with bottom shielding of bushing output terminal copper rod as leading-in end, and left end is as exit, and the endoporus 6 of exit inserts the ground wire cable and draws.The leading-in end of the current signal of casing leak through copper conducting rod 3 introduced, and by ground connection again behind exit cable transmission to the current transformer, Current Transformer Secondary exports on-Line Monitor Device to, realizes the sleeve pipe on-line monitoring again.
Than embodiment 1, the difference of present embodiment is that the diameter of left end endoporus is 4mm on the said copper conducting rod 3, and the degree of depth is 14mm, and the diameter of right-hand member endoporus is 4mm, and the degree of depth is 15mm.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in the accompanying drawing also is one of embodiment of the utility model, and practical structure is not limited thereto.So,, under the situation that does not break away from the invention aim,, all should belong to protection scope of the present invention without creationary frame mode similar and the embodiment of designing with this technical scheme if those of ordinary skill in the art is enlightened by it.
Claims (2)
1. a power transformer casing leak current signal is drawn the standard interface device; It is characterized in that; It comprises stainless steel sleeve pipe assembly (1), epoxy insulation sleeve (2), copper conducting rod (3) and stainless steel sleeve pipe assembly base (5); Said copper conducting rod (3) is enclosed within the stainless steel sleeve pipe assembly (1); Be provided with epoxy insulation sleeve (2) between said stainless steel sleeve pipe assembly (1) and the said copper conducting rod (3); Said stainless steel sleeve pipe assembly base (5) is fixed on the right-hand member of stainless steel sleeve pipe assembly (1), and stainless steel sleeve pipe assembly base (5) is pressed on copper conducting rod (3) in the stainless steel sleeve pipe assembly (1), is provided with epoxy insulation pad (4) between said stainless steel sleeve pipe assembly base (5) and the copper conducting rod (3).
2. a kind of power transformer casing leak current signal according to claim 1 is drawn the standard interface device, it is characterized in that the left end of described copper conducting rod (3) and right-hand member are provided with two disconnected endoporus (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234170U CN202305587U (en) | 2011-10-31 | 2011-10-31 | Standard interface device for leading out leakage current signal of bushing of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234170U CN202305587U (en) | 2011-10-31 | 2011-10-31 | Standard interface device for leading out leakage current signal of bushing of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305587U true CN202305587U (en) | 2012-07-04 |
Family
ID=46374459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204234170U Expired - Fee Related CN202305587U (en) | 2011-10-31 | 2011-10-31 | Standard interface device for leading out leakage current signal of bushing of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050239A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Thread type lead-out device of transformer bushing end screen signal |
-
2011
- 2011-10-31 CN CN2011204234170U patent/CN202305587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050239A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Thread type lead-out device of transformer bushing end screen signal |
| CN103050239B (en) * | 2012-12-17 | 2015-12-30 | 国网浙江省电力公司电力科学研究院 | A kind of screw-type ejector of Transformer Bushing Tap signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |