CN103730241B - A kind of D.C. magnetic biasing testing transformer model - Google Patents
A kind of D.C. magnetic biasing testing transformer model Download PDFInfo
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- CN103730241B CN103730241B CN201310725265.3A CN201310725265A CN103730241B CN 103730241 B CN103730241 B CN 103730241B CN 201310725265 A CN201310725265 A CN 201310725265A CN 103730241 B CN103730241 B CN 103730241B
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Abstract
The present invention relates to a kind of D.C. magnetic biasing testing transformer model, belong to transformer technology field.Technical scheme is: be single-phase double winding off circuit tap changing transfor mer, iron core is three pillar type, comprises iron core (22), high pressure winding (23), low pressure winding (24) and fuel tank (25), and high pressure winding and low pressure winding concentric locking collar are loaded on iron core; Be provided with a single-phase three pillar type transformer body in oil tank of transformer, its iron yoke is square, device body from core limb from inside to outside coils arrangement order be low pressure winding, high pressure winding, high-pressure side non-excitation pressure adjustment; High pressure winding is provided with tap-changing windings, and tap-changing windings is positioned at high pressure winding, and voltage regulating mode is coarse adjustment fine tuning combines.The invention has the beneficial effects as follows: utilize this model can simulate large capacity single phase two winding transformer in factory under zero load and load operation conditions, complete D.C. magnetic biasing and the impact of transformer is tested.
Description
Technical field
The present invention relates to a kind of D.C. magnetic biasing testing transformer model, belong to transformer technology field.
Background technology
The model of single-phase two winding transformer, is mainly used in the experimental study of bearing D.C. magnetic biasing effect under no-load transformer and loading condition.The testing transformer model of background technology can not simulate large capacity single phase two winding transformer under zero load and load operation conditions in factory, can not complete D.C. magnetic biasing and test the impact of transformer.
Summary of the invention
The object of the invention is to provide a kind of D.C. magnetic biasing testing transformer model, large capacity single phase two winding transformer can be simulated under zero load and load operation conditions in factory, complete D.C. magnetic biasing to test the impact of transformer, solve Problems existing in background technology.
Technical scheme of the present invention is:
A kind of D.C. magnetic biasing testing transformer model, be single-phase double winding off circuit tap changing transfor mer, iron core is three pillar type, comprises iron core, high pressure winding, low pressure winding and fuel tank, and high pressure winding and low pressure winding concentric locking collar are loaded on iron core; Be provided with a single-phase three pillar type transformer body in oil tank of transformer, its iron yoke is square, device body from core limb from inside to outside coils arrangement order be low pressure winding, high pressure winding, high-pressure side non-excitation pressure adjustment; High pressure winding is provided with tap-changing windings, and tap-changing windings is positioned at high pressure winding, and voltage regulating mode is coarse adjustment fine tuning combines.
Tap-changing windings divides two parts, two parts are all positioned at high pressure winding, Part I is the coarse adjustment part of voltage-regulation, Part II is the fine tuning part of voltage-regulation, concrete range of regulation is determined according to the design of transformer impedance, under coarse adjustment mode, pressure regulation range percentages is the twice of transformer impedance percentage, range of regulation under fine tuning mode and every grade of pressure regulation voltage are determined according to modelling and the situation of manufacture, the effect of fine tuning is finely tuned on the basis of coarse adjustment range of regulation to transformer impedance percentage twice, to ensure that total range of regulation is two transformer impedance percentage sums.Ensure that the voltage-regulation percentage of coarse adjustment part is the twice of transformer impedance percentage, fine tuning part ensures that the overall pressure regulation percentage of transformer is two transformer impedance sums.
The invention has the beneficial effects as follows: utilize this model can simulate large capacity single phase two winding transformer in factory under zero load and load operation conditions, complete D.C. magnetic biasing and the impact of transformer is tested.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is electrical wiring schematic diagram of the present invention;
In figure: off circuit tap changer 21, iron core 22, high pressure winding 23, low pressure winding 24, fuel tank 25.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
A kind of D.C. magnetic biasing testing transformer model, be single-phase double winding off circuit tap changing transfor mer, iron core is three pillar type, and comprise iron core 22, high pressure winding 23, low pressure winding 24 and fuel tank 25, high pressure winding and low pressure winding concentric locking collar are loaded on iron core; Be provided with a single-phase three pillar type transformer body in oil tank of transformer, its iron yoke is square, device body from core limb from inside to outside coils arrangement order be low pressure winding, high pressure winding, high-pressure side non-excitation pressure adjustment; High pressure winding is provided with tap-changing windings, and tap-changing windings is positioned at high pressure winding, and voltage regulating mode is coarse adjustment fine tuning combines.
Tap-changing windings divides two parts, two parts are all positioned at high pressure winding, Part I is the coarse adjustment part of voltage-regulation, Part II is the fine tuning part of voltage-regulation, concrete range of regulation is determined according to the design of transformer impedance, under coarse adjustment mode, pressure regulation range percentages is the twice of transformer impedance percentage, range of regulation under fine tuning mode and every grade of pressure regulation voltage are determined according to modelling and the situation of manufacture, the effect of fine tuning is finely tuned on the basis of coarse adjustment range of regulation to transformer impedance percentage twice, to ensure that total range of regulation is two transformer impedance percentage sums.Ensure that the voltage-regulation percentage of coarse adjustment part is the twice of transformer impedance percentage, fine tuning part ensures that the overall pressure regulation percentage of transformer is two transformer impedance sums.
With reference to accompanying drawing, in the present embodiment, tap-changing windings divides two parts, two parts are all positioned at high pressure winding, and Part I is the coarse adjustment part of voltage-regulation, and Part II is the fine tuning part of voltage-regulation, off circuit tap changer 21 is positioned at fuel tank 25 bight, is connected with tap-changing windings Part II.Part II 10-8-6-4-2-3-5-7-9-11, for the fine setting of voltage-regulation; A, A1, A2 of Part I draw respectively by sleeve pipe, for the coarse adjustment of voltage-regulation.Two identical transformers of the present invention of structure manufactured experimently by this model, wherein the A of a transformer is connected with A1 or A2 of another transformer, the X of two transformers is connected, low-pressure side is in parallel, finely tuned by off circuit tap changer, to reach the requirement that total range of regulation is two transformer impedance sums, now two transformers reach rated current simultaneously, can the load condition of analogue transformer.
Claims (1)
1. a D.C. magnetic biasing testing transformer model, it is characterized in that: be single-phase double winding off circuit tap changing transfor mer, iron core is three pillar type, comprise iron core (22), high pressure winding (23), low pressure winding (24) and fuel tank (25), high pressure winding and low pressure winding concentric locking collar are loaded on iron core; Be provided with a single-phase three pillar type transformer body in oil tank of transformer, its iron yoke is square, device body from core limb from inside to outside coils arrangement order be low pressure winding, high pressure winding, high-pressure side non-excitation pressure adjustment; High pressure winding is provided with tap-changing windings, and tap-changing windings is positioned at high pressure winding, and voltage regulating mode is coarse adjustment fine tuning combines;
Tap-changing windings divides two parts, two parts are all positioned at high pressure winding, Part I is the coarse adjustment part of voltage-regulation, Part II is the fine tuning part of voltage-regulation, concrete range of regulation is determined according to the design of transformer impedance, under coarse adjustment mode, pressure regulation range percentages is the twice of transformer impedance percentage, range of regulation under fine tuning mode and every grade of pressure regulation voltage are determined according to modelling and the situation of manufacture, the effect of fine tuning is finely tuned on the basis of coarse adjustment range of regulation to transformer impedance percentage twice, to ensure that total range of regulation is two transformer impedance percentage sums,
Off circuit tap changer (21) is positioned at fuel tank (25) bight, is connected with tap-changing windings Part II;
Two identical transformers of structure, wherein the A of a transformer is connected with A1 or A2 of another transformer, the X of two transformers is connected, low-pressure side is in parallel, finely tuned by off circuit tap changer as required, to reach the requirement that total range of regulation is two transformer impedance sums, now two transformers reach rated current simultaneously, can the load condition of analogue transformer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725265.3A CN103730241B (en) | 2013-12-25 | 2013-12-25 | A kind of D.C. magnetic biasing testing transformer model |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310725265.3A CN103730241B (en) | 2013-12-25 | 2013-12-25 | A kind of D.C. magnetic biasing testing transformer model |
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| Publication Number | Publication Date |
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| CN103730241A CN103730241A (en) | 2014-04-16 |
| CN103730241B true CN103730241B (en) | 2016-01-20 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106501619B (en) * | 2016-12-31 | 2018-04-13 | 西南交通大学 | Core loss pilot system and method between a kind of lamination under short trouble |
| CN110749799B (en) * | 2019-12-02 | 2021-01-15 | 华北电力大学 | Extra-high voltage transformer direct current magnetic bias equivalent test method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4234862A (en) * | 1977-07-22 | 1980-11-18 | Alsthom-Unelec | Robust polyphase transformer |
| CN201262881Y (en) * | 2008-09-16 | 2009-06-24 | 保定天威集团有限公司 | Single-phase testing transformer |
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103050255A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High-capacity double-generator transformer with function of low voltage radial splitting |
| CN103050256A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High-voltage strip coarse-fine voltage adjusting power transformer |
-
2013
- 2013-12-25 CN CN201310725265.3A patent/CN103730241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4234862A (en) * | 1977-07-22 | 1980-11-18 | Alsthom-Unelec | Robust polyphase transformer |
| CN201262881Y (en) * | 2008-09-16 | 2009-06-24 | 保定天威集团有限公司 | Single-phase testing transformer |
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103050255A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High-capacity double-generator transformer with function of low voltage radial splitting |
| CN103050256A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High-voltage strip coarse-fine voltage adjusting power transformer |
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