CN104181343A - Universal line concentration device for transformer tests - Google Patents
Universal line concentration device for transformer tests Download PDFInfo
- Publication number
- CN104181343A CN104181343A CN201410445310.4A CN201410445310A CN104181343A CN 104181343 A CN104181343 A CN 104181343A CN 201410445310 A CN201410445310 A CN 201410445310A CN 104181343 A CN104181343 A CN 104181343A
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- transformer
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- voltage
- wiring terminal
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Abstract
The invention relates to tools for transformer high-voltage tests, in particular to a universal line concentration device for transformer tests. The universal line concentration device for transformer tests solves the problem that because a tool special for transformer high-voltage tests is lacking, the time of the transformer high-voltage tests is excessively long. The line concentration device is composed of a test line and a line concentration box, wherein the test line is sequentially composed of a first high-voltage silica gel insulating layer, a first shielding layer, a second high-voltage silica gel insulating layer, a current test line layer, a second shielding layer, a low-voltage ordinary insulating layer and a voltage test core wire from outside to inside, the line concentration box comprises a box body, a plurality of sets of wiring terminals and a ground terminal connected with a shell of the box body are arranged on a panel of the box body, each set of wiring terminals are formed by a current wiring terminal, a voltage wiring terminal and a shielding wiring terminal, different wiring terminals are surrounded by mask tape, one end of the test line is connected with a pair of test pliers, and the other end of the test line is provided with three insertion rods. According to the universal line concentration device for transformer tests, the test line of a transformer can be connected to the corresponding line concentration box at a time, and the frequency of going up to and going down from the transformer is reduced.
Description
Technical field
The present invention relates to transformer high-voltage test instrument, be specially the general line concentrator of transformer test.
Background technology
During transformer station's interruption maintenance, have many teams and groups work of the specialties such as relay protection, substation equipment maintenance and repair, high-potting, oil business chemical examination, instrument, maintenance, and high-potting due to its singularity conventionally can not with other teams and groups' cross-operation.
Transformer high-voltage pilot project mainly contains: winding D.C. resistance; Winding insulation resistance and absorptance or polarization index; Tan δ and the electric capacity of winding; Capacitance sleeve pipe tan δ and electric capacity.When transformer is carried out to each test, because instrument uses lead-in wire disunity, therefore often doing a test all needs staff to climb transformer, its high, medium and low voltage winding is carried out respectively to short circuit, ground connection, change test connection, and after change test connection, wiring personnel must withdraw from transformer, when therefore transformer is tested at every turn, testing crew needs upper and lower transformer many times, causes transformer high-voltage total time on test to extend.If high-potting work takies the too many time, will bring larger pressure, the power transmission that occasions a delay of even likely cannot finishing the work to other teams and groups in planned time so.
Bushing shell for transformer is the main seal outside transformer tank, and the extension line of Transformer Winding must pass insulating sleeve, make between extension line and extension line and transformer case between insulate, play fixedly extension line simultaneously.Single transformer has low pressure head end sleeve pipe, low pressure end sleeve pipe, neutral bushing, medium-tension bushing, bushing totally 5 sleeve pipes.Three-phase transformer has 12 sleeve pipes, is divided into 4 sleeve pipes of 4 sleeve pipes of low-pressure area, middle nip and 4 sleeve pipes of higher-pressure region.
Summary of the invention
The present invention solves at present for want of special transformer high-voltage test instrument, causes the long problem of transformer high-voltage test period, provides a kind of transformer test general line concentrator.
The present invention adopts following technical scheme to realize: the general line concentrator of transformer test, consists of p-wire and cable concentrator, described p-wire consists of the first high pressure silicone insulation layer, the first screen layer, the second high pressure silicone insulation layer, testing current line layer, secondary shielding layer, the common insulation course of low pressure and voltage tester heart yearn from outside to inside successively, described cable concentrator comprises box body, and box body panel is provided with some groups of connection terminals and a ground terminal being connected with box case, and the group number of connection terminal is identical with the sleeve pipe quantity of single transformer or three-phase transformer and corresponding one by one, every group of connection terminal is comprised of current wiring terminal, voltage wiring terminal and shield terminal, with single transformer low pressure head end sleeve pipe, current wiring terminal in terminals subgroup corresponding to low pressure end sleeve pipe, voltage wiring terminal be jointly fixed in low pressure mask tape institute on box body panel lower surface around, with single transformer low pressure head end sleeve pipe, shield terminal in terminals subgroup corresponding to low pressure end sleeve pipe is all connected with low pressure mask tape, with single transformer neutral bushing, medium-tension bushing, current wiring terminal in terminals subgroup corresponding to bushing, voltage wiring terminal be jointly fixed in mesohigh mask tape institute on box body panel lower surface around, with single transformer neutral bushing, medium-tension bushing, shield terminal in terminals subgroup corresponding to bushing is all connected with mesohigh mask tape, current wiring terminal in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area, voltage wiring terminal be jointly fixed in low-pressure area mask tape institute on box body panel lower surface around, shield terminal in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area is all connected with low-pressure area mask tape, current wiring terminal in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer, voltage wiring terminal be jointly fixed in middle nip mask tape institute on box body panel lower surface around, shield terminal in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer is all connected with middle nip mask tape, current wiring terminal in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe, voltage wiring terminal be jointly fixed in mask tape, a higher-pressure region on box body panel lower surface institute around, shield terminal in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe is all connected with mask tape, higher-pressure region, every group of corresponding p-wire of connection terminal, one end of this p-wire is connected with testing clamp, two terminals of testing clamp are connected with testing current line layer with the voltage tester heart yearn of p-wire respectively, the other end of this p-wire be provided with three respectively with the first screen layer of p-wire, the plunger that testing current line layer is connected with voltage tester heart yearn, three plungers insert respectively shield terminal, current wiring terminal and the voltage wiring terminal of this group connection terminal.
During use, the testing clamp of each p-wire one end is clipped on the extension line of the corresponding sleeve pipe of transformer (single-phase or three-phase).Like this, exactly the extension line of each sleeve pipe of transformer and the wiring point of needs that are positioned at eminence have been guided to each connection terminal on the cable concentrator that is positioned at lower by p-wire, on cable concentrator, can according to current methods, carry out the various routine tests of high-potting, without ascending a height again, climb low.
P-wire outermost layer the first high pressure silicone insulation layer; The second layer is the first screen layer, the shading ring wiring during as Insulation test; The 3rd layer is the second high pressure silicone insulation layer; The 4th layer is testing current line layer, for when direct current resistance is tested, to Transformer Winding, adds electric current; Layer 5 is secondary shielding layer, the shading ring wiring during as Insulation test; Layer 6 is the common insulation course of low pressure, and inner most is voltage tester heart yearn, for gather the voltage drop in Transformer Winding when direct current resistance is tested.In the present invention, the setting of each mask tape has highlighted the substantive distinguishing features of its structural design.
Line concentrator of the present invention can once be received the test wire of transformer on corresponding cable concentrator, transformer completes different tests up and down, saves a large amount of time, has improved work efficiency, reduce the number of times of upper and lower transformer, also personnel's security has been had to raising.The wiring of transformer test is all transferred on cable concentrator, can improve wiring efficiency and the correctness of transformer test, is convenient to improve the standardization level of operation, reduces the mistake that transformer test occurs due to wiring reason.P-wire reasonable in design of the present invention, uniqueness, tan δ and electric capacity, capacitance sleeve pipe tan δ and the electric capacity that with same p-wire, just can test winding D.C. resistance, winding insulation resistance, absorptance or polarization index, winding.The present invention has designed two kinds of (single-phase and three-phase) transformer test cable concentrators, the plug of universal test p-wire is received respectively in the corresponding wiring terminal of cable concentrator, can realize easily change wiring, the functions such as short circuit.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of p-wire of the present invention;
Fig. 2 is the concentrator box structure schematic diagram of single transformer of the present invention;
Fig. 3 is the concentrator box structure schematic diagram of three-phase transformer of the present invention.
Embodiment
The general line concentrator of transformer test, consists of p-wire and cable concentrator; Described p-wire consists of the first high pressure silicone insulation layer 1, the first screen layer 2, the second high pressure silicone insulation layer 3, testing current line layer 4, secondary shielding layer 5, the common insulation course 6 of low pressure and voltage tester heart yearn 7 from outside to inside successively; Described cable concentrator comprises box body 8, and box body panel is provided with the ground terminal G that some groups of connection terminals are connected with box case with, and the group number of connection terminal is identical with the sleeve pipe quantity of single transformer or three-phase transformer and corresponding one by one; Every group of connection terminal is comprised of current wiring terminal I, voltage wiring terminal V and the sub-P of shield terminal; Current wiring terminal (I in the terminals subgroup corresponding with single transformer low pressure head end sleeve pipe, low pressure end sleeve pipe
dM, I
dS), voltage wiring terminal (V
dM, V
dS) be jointly fixed in 9 of low pressure mask tapes on box body panel lower surface around, the shield terminal (P in the terminals subgroup corresponding with single transformer low pressure head end sleeve pipe, low pressure end sleeve pipe
dM, P
dS) be all connected with low pressure mask tape 9, the current wiring terminal (I in the terminals subgroup corresponding with single transformer neutral bushing, medium-tension bushing, bushing
zX, I
zY, I
gY), voltage wiring terminal (V
zX, V
zY, V
gY) be jointly fixed in 10 of mesohigh mask tapes on box body panel lower surface around, the shield terminal (P in the terminals subgroup corresponding with single transformer neutral bushing, medium-tension bushing, bushing
zX, P
zY, P
gY) be all connected with mesohigh mask tape 10; Current wiring terminal (I in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area
a, I
b, I
c, I
o), voltage wiring terminal (V
a, V
b, V
c, V
o) be jointly fixed in 11 of low-pressure area mask tapes on box body panel lower surface around, the shield terminal (P in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area
a, P
b, P
c, P
o) be all connected with low-pressure area mask tape 11, the current wiring terminal (I in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer
aZ, I
bZ, I
cZ, I
oZ), voltage wiring terminal (V
aZ, V
bZ, V
cZ, V
oZ) be jointly fixed in 12 of middle nip mask tapes on box body panel lower surface around, the shield terminal (P in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer
aZ, P
bZ, P
cZ, P
oZ) be all connected with middle nip mask tape 12, the current wiring terminal (I in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe
aG, I
bG, I
cG, I
oG), voltage wiring terminal (V
aG, V
bG, V
cG, V
oG) be jointly fixed in 13 of mask tapes, a higher-pressure region on box body panel lower surface around, the shield terminal (P in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe
aG, P
bG, P
cG, P
oG) be all connected with mask tape, higher-pressure region 13; Every group of corresponding p-wire of connection terminal, one end of this p-wire is connected with testing clamp, two terminals of testing clamp are connected with testing current line layer 4 with the voltage tester heart yearn 7 of p-wire respectively, the other end of this p-wire be provided with three respectively with the first screen layer 2 of p-wire, the plunger that testing current line layer 4 is connected with voltage tester heart yearn 7, three the sub-P of shield terminal, current wiring terminal I and voltage wiring terminal V that plunger inserts respectively this group connection terminal.
Below with reference to the accompanying drawings the specific embodiment of the present invention is described:
During test, only bushing shell for transformer extension line need to be connected to dedicated testing wire of the present invention, the other end of p-wire is received respectively on electric current, voltage and the shielding terminated line terminal of the corresponding sleeve position of cable concentrator (single-phase or three-phase).
1. p-wire two end connector explanations a: end of p-wire is received on bushing shell for transformer, and the other end of p-wire is received in the corresponding wiring terminal of cable concentrator.The extension line mode of receiving on bushing shell for transformer is: the testing current line of the heart yearn of innermost layer and the 4th layer is received on two jaws of a testing clamp by the terminals of testing clamp.The lead-in wire mode of receiving the one end on cable concentrator is: by the second layer, and the 4th layer, and heart yearn connects respectively a plunger, correspondence connects the shielding end of cable concentrator, current terminal, voltage end.
2. during transformer test, each sleeve pipe connects a Special test p-wire of the present invention.
3. when the present invention tests Transformer Winding direct current resistance operation: DC Resistance of Transformer test is all the instrument that adopts four-wire system mensuration, has I+, I-, V+, tetra-connection terminals of V-.For example to test the direct current resistance of single transformer low pressure winding and use single transformer test cable concentrator, the I+ of instrument is received to cable concentrator low pressure head end I
dS, instrument I-is received to cable concentrator low pressure end I
dM, the V+ of instrument receives cable concentrator low pressure head end V
dS, the V-of instrument receives the low pressure end V of cable concentrator
dMall the other binding post open circuits on cable concentrator, start the DC resistance that instrument for measuring DC resistance just can test out the low pressure winding of single transformer, the corresponding winding connection terminal that the direct current resistance of other winding of measurement single transformer only need to be received p-wire on corresponding cable concentrator can test out correct data, do not need down the wiring on transformer, the wiring only operating on cable concentrator just can test out correct data.For example, operation while testing the direct current resistance of high pressure AO winding of three-phase transformer, the I+ of instrument is received to the IAG in cable concentrator high-voltage connection district, instrument I-is received to the IOG in cable concentrator high-voltage connection district, the V+ of instrument receives the VAG in cable concentrator high-voltage connection district, the V-of instrument receives the VOG in cable concentrator high-voltage connection district, all the other binding post open circuits on cable concentrator, start the DC resistance that instrument for measuring DC resistance just can test out the high pressure winding AO of three-phase phase transformer, the corresponding winding connection end that the direct current resistance of other winding of measurement three-phase transformer only need to be received p-wire on corresponding cable concentrator can test out correct data, do not need down the wiring on transformer, the wiring only operating on cable concentrator just can test out correct data.
4. operation when the present invention tests Insulation Resistance of Transformer, megger test has three terminals and is respectively L, E and G, general E ground connection, G connects the position that needs shielding, and L connects the position that needs test.For example, when single transformer testing high voltage is over the ground with the insulation resistance of low pressure winding, use single transformer cable concentrator, first by the neutral point IZX on cable concentrator, middle pressure IZY, high pressure IGY, neutral point VZX, middle pressure VZY, six connection terminal line short circuits of high pressure VGY, receive the L end of megger test; Together with low pressure end IDM, low pressure head end IDS, low pressure end VDM, low pressure head end VDS, low pressure end shielding PDM, seven connection terminals of low pressure head end shielding PDS and earth terminal G are shorted to shorting stub (low pressure end P, low pressure head end P are shorted to together by cable concentrator inside), receive the E end of megger test; The G end of megger test is received to the high pressure P end (has received neutral point P, middle pressure P, high pressure P together cable concentrator inside) of cable concentrator.Start Insulation Resistance Tester and just can test out correct data.While in like manner testing low pressure to the insulation resistance on high pressure and ground, be also only on cable concentrator operation just can measure correct test data.The wiring of three-phase transformer test also can in like manner operate and just can measure correct data on three-phase connection box.
5. the present invention tests the wiring operation of Transformer Winding, for example, test electric capacity and the tan δ of the high pressure winding of single transformer.The cable concentrator wiring of this method of testing and 4 basic identical.
Claims (1)
1. the general line concentrator of transformer test, is characterized in that: p-wire and cable concentrator, consist of; Described p-wire consists of the first high pressure silicone insulation layer (1), the first screen layer (2), the second high pressure silicone insulation layer (3), testing current line layer (4), secondary shielding layer (5), the common insulation course of low pressure (6) and voltage tester heart yearn (7) from outside to inside successively; Described cable concentrator comprises box body (8), and box body panel is provided with some groups of connection terminals and a ground terminal being connected with box case (G), and the group number of connection terminal is identical with the sleeve pipe quantity of single transformer or three-phase transformer and corresponding one by one; Every group of connection terminal is comprised of current wiring terminal (I), voltage wiring terminal (V) and shield terminal (P); Current wiring terminal (I in the terminals subgroup corresponding with single transformer low pressure head end sleeve pipe, low pressure end sleeve pipe
dM, I
dS), voltage wiring terminal (V
dM, V
dS) be jointly fixed in a low pressure mask tape (9) on box body panel lower surface institute around, the shield terminal (P in the terminals subgroup corresponding with single transformer low pressure head end sleeve pipe, low pressure end sleeve pipe
dM, P
dS) be all connected with low pressure mask tape (9), the current wiring terminal (I in the terminals subgroup corresponding with single transformer neutral bushing, medium-tension bushing, bushing
zX, I
zY, I
gY), voltage wiring terminal (V
zX, V
zY, V
gY) be jointly fixed in a mesohigh mask tape (10) on box body panel lower surface institute around, the shield terminal (P in the terminals subgroup corresponding with single transformer neutral bushing, medium-tension bushing, bushing
zX, P
zY, P
gY) be all connected with mesohigh mask tape (10); Current wiring terminal (I in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area
a, I
b, I
c, I
o), voltage wiring terminal (V
a, V
b, V
c, V
o) be jointly fixed in a low-pressure area mask tape (11) on box body panel lower surface institute around, the shield terminal (P in the terminals subgroup corresponding with 4 sleeve pipes of three-phase transformer low-pressure area
a, P
b, P
c, P
o) be all connected with low-pressure area mask tape (11), the current wiring terminal (I in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer
aZ, I
bZ, I
cZ, I
oZ), voltage wiring terminal (V
aZ, V
bZ, V
cZ, V
oZ) be jointly fixed in a middle nip mask tape (12) on box body panel lower surface institute around, the shield terminal (P in the terminals subgroup corresponding with 4 sleeve pipes of nip in three-phase transformer
aZ, P
bZ, P
cZ, P
oZ) be all connected with middle nip mask tape (12), the current wiring terminal (I in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe
aG, I
bG, I
cG, I
oG), voltage wiring terminal (V
aG, V
bG, V
cG, V
oG) be jointly fixed in mask tape, a higher-pressure region (13) on box body panel lower surface institute around, the shield terminal (P in the terminals subgroup corresponding with 4 of three-phase transformer higher-pressure regions sleeve pipe
aG, P
bG, P
cG, P
oG) be all connected with mask tape, higher-pressure region (13); Every group of corresponding p-wire of connection terminal, one end of this p-wire is connected with testing clamp, two terminals of testing clamp are connected with testing current line layer (4) with the voltage tester heart yearn (7) of p-wire respectively, the other end of this p-wire is provided with three plungers that are connected with the first screen layer (2), testing current line layer (4) and the voltage tester heart yearn (7) of p-wire respectively, and three plungers insert respectively shield terminal (P), current wiring terminal (I) and the voltage wiring terminal (V) of this group connection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445310.4A CN104181343A (en) | 2014-09-03 | 2014-09-03 | Universal line concentration device for transformer tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445310.4A CN104181343A (en) | 2014-09-03 | 2014-09-03 | Universal line concentration device for transformer tests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104181343A true CN104181343A (en) | 2014-12-03 |
Family
ID=51962563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410445310.4A Pending CN104181343A (en) | 2014-09-03 | 2014-09-03 | Universal line concentration device for transformer tests |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104181343A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448377A (en) * | 2016-09-28 | 2017-02-22 | 国家电网公司 | Dynamical simulator for abnormal structure change fault of transformer |
| CN114113689A (en) * | 2021-11-08 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Intelligent tray device based on integrated electrical detection wiring module |
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| CN102156242A (en) * | 2011-03-25 | 2011-08-17 | 河北省电力研究院 | Method for testing transformer insulation combination |
| CN202994856U (en) * | 2012-10-31 | 2013-06-12 | 山西省电力公司检修分公司 | General test cable used for transformer test |
| CN202994832U (en) * | 2012-10-31 | 2013-06-12 | 山西省电力公司检修分公司 | General wire collecting box for transformer test |
| CN203259547U (en) * | 2013-04-12 | 2013-10-30 | 国家电网公司 | Wiring board for high-voltage electric test of transformer |
| CN103983814A (en) * | 2014-06-07 | 2014-08-13 | 国家电网公司 | Comprehensive test case for transformer |
| CN204142760U (en) * | 2014-09-03 | 2015-02-04 | 国家电网公司 | The general line concentrator of transformer test |
-
2014
- 2014-09-03 CN CN201410445310.4A patent/CN104181343A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156242A (en) * | 2011-03-25 | 2011-08-17 | 河北省电力研究院 | Method for testing transformer insulation combination |
| CN202994856U (en) * | 2012-10-31 | 2013-06-12 | 山西省电力公司检修分公司 | General test cable used for transformer test |
| CN202994832U (en) * | 2012-10-31 | 2013-06-12 | 山西省电力公司检修分公司 | General wire collecting box for transformer test |
| CN203259547U (en) * | 2013-04-12 | 2013-10-30 | 国家电网公司 | Wiring board for high-voltage electric test of transformer |
| CN103983814A (en) * | 2014-06-07 | 2014-08-13 | 国家电网公司 | Comprehensive test case for transformer |
| CN204142760U (en) * | 2014-09-03 | 2015-02-04 | 国家电网公司 | The general line concentrator of transformer test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448377A (en) * | 2016-09-28 | 2017-02-22 | 国家电网公司 | Dynamical simulator for abnormal structure change fault of transformer |
| CN114113689A (en) * | 2021-11-08 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Intelligent tray device based on integrated electrical detection wiring module |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141203 |
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| RJ01 | Rejection of invention patent application after publication |