CN102945735A - Pre-magnetizing transformer with voltage regulator and manufacture method thereof - Google Patents
Pre-magnetizing transformer with voltage regulator and manufacture method thereof Download PDFInfo
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- CN102945735A CN102945735A CN2012104375197A CN201210437519A CN102945735A CN 102945735 A CN102945735 A CN 102945735A CN 2012104375197 A CN2012104375197 A CN 2012104375197A CN 201210437519 A CN201210437519 A CN 201210437519A CN 102945735 A CN102945735 A CN 102945735A
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Abstract
The invention belongs to the technical field of production of a transformer, and relates to a pre-magnetizing transformer with a voltage regulator and a manufacture method thereof. The technical scheme is as follows: the pre-magnetizing transformer with the voltage regulator comprises a primary side winding (1), the voltage regulator (4), a secondary side winding (2) and an auxiliary winding (3), wherein the primary side winding is arranged at the high voltage side of the transformer, the secondary side winding and the auxiliary winding are arranged at the lower voltage side of the transformer, the voltage of the auxiliary winding is lower than secondary side voltage, the current of the auxiliary winding is exciting current of an iron core, the phase of the auxiliary winding is the same as the phase of the primary side winding, and the auxiliary winding is connected with a secondary side lower voltage power grid through the voltage regulator. According to the invention, the voltage of the voltage regulator slowly rises, so that the auxiliary winding completes the excitation to the iron core of the transformer, a stable flux is established in the iron core, the misoperation of a relay in a main line can be avoided, and simultaneously, the harmful effect of the magnetizing rush current in a main loop can be eliminated. The product is more suitable for a power system with a smaller short circuit capacity. The invention can eliminate the action of on-load closing magnetizing rush current of the transformer.
Description
Technical field
The present invention relates to a kind of pre-magnetizing transformer with voltage regulator and preparation method thereof, belong to the transformer production technical field.
Background technology
At present, use the Dry-Transformer Technology field at boats and ships, electric pressure and the capacity of dry-type transformer are increasing, and this just needs the capacity of short circuit of electric power system enough large.The capacity of short circuit of this type of electric power system of background technology is generally less, in such cases, when if the capacity of transformer and electric pressure are very large in the system, transformer may larger magnetizing inrush current will occur in the process of idle-loaded switching-on, this electric current also may cause the misoperation of major loop relay, affects normal, the safe operation of all the other power consumption equipments in the system.The larger magnetizing inrush current of how eliminating in the major loop is this area problem demanding prompt solution.
Summary of the invention
The purpose of this invention is to provide a kind of pre-magnetizing transformer with voltage regulator and preparation method thereof, the magnetizing inrush current of eliminating transformer idle-loaded switching-on solves the problems referred to above that background technology exists.
Technical scheme of the present invention is: a kind of pre-magnetizing transformer manufacture method with voltage regulator comprises following processing step:
1. the secondary side (low-pressure side) at transformer increases an auxiliary winding (pre-magnetizing winding), and this auxiliary winding voltage is lower than secondary side voltage, and electric current is the exciting current of iron core, phase place and primary side (high-pressure side) winding same-phase;
2. auxiliary winding connects with the secondary side low voltage electric network by voltage regulator;
3. first to the breaker closing between voltage regulator and the electrical network, voltage regulator output voltage gradually raises;
4. the voltage regulator output voltage raises gradually, and the auxiliary every phase voltage of winding also raises gradually, the iron core excitation, and after auxiliary winding voltage was raised to rated value, magnetic flux reached a stable state;
5. primary side is carried out idle-loaded switching-on, existed a stable state magnetic flux owing in the iron core this moment, and phase place is identical, then magnetizing inrush current can not occur in the first side winding idle-loaded switching-on process.
A kind of pre-magnetizing transformer with voltage regulator, comprise first side winding, voltage regulator, secondary side winding and auxiliary winding, first side winding is arranged on the high-pressure side of transformer, secondary side winding and auxiliary winding are arranged on the low-pressure side of transformer, should auxiliary winding voltage be lower than secondary side voltage, electric current is the exciting current of iron core, phase place and primary side (high-pressure side) winding same-phase; Auxiliary winding connects with the secondary side low voltage electric network by voltage regulator.
Size according to first side winding and secondary side winding technical parameter calculative determination iron core exciting current; According to the electric current of first side winding calculating and the voltage of low voltage electric network, calculate capacity and the number of turn parameter of auxiliary winding (pre-magnetizing winding); At the auxiliary winding of the bottom of secondary side winding coiling; Capacity and number of turn parameter according to low voltage electric network voltage and auxiliary winding (pre-magnetizing winding) are determined adaptive voltage regulator; To assist Winding tap to connect with voltage regulator; Voltage regulator is accessed low voltage electric network; First with the breaker closing between voltage regulator and the low-voltage electrical network; The output voltage of voltage regulator gradually raises; The voltage regulator output voltage is finished the iron core pre-magnetizing after being raised to rated voltage, then to the first side winding idle-loaded switching-on.
Good effect of the present invention: the present invention is by the slow rising of voltage regulator voltage, and auxiliary winding is finished the excitation to transformer core, has set up a stable state magnetic flux in iron core.Under this state, just can not produce magnetizing inrush current during transformer primary side idle-loaded switching-on.Avoid the misoperation of main line relay, eliminated simultaneously magnetizing inrush current issuable harmful effect in major loop.This Project Product more is applicable to the less electric power system of capacity of short circuit.The present invention compares with common dry-type transformer, has the effect of eliminating transformer idle-loaded switching-on magnetizing inrush current.
Description of drawings
Fig. 1 is embodiment of the invention schematic diagram;
Among the figure: first side winding 1, secondary side winding 2, auxiliary winding 3, voltage regulator 4.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
A kind of pre-magnetizing transformer with voltage regulator, comprise first side winding 1, voltage regulator 4, secondary side winding 2 and auxiliary winding 3, first side winding is arranged on the high-pressure side of transformer, secondary side winding and auxiliary winding are arranged on the low-pressure side of transformer, should auxiliary winding voltage be lower than secondary side voltage, electric current is the exciting current of iron core, phase place and primary side (high-pressure side) winding same-phase; Auxiliary winding connects with the secondary side low voltage electric network by voltage regulator.
Size according to first side winding and secondary side winding technical parameter calculative determination iron core exciting current; According to the electric current of first side winding calculating and the voltage of low voltage electric network, calculate capacity and the number of turn parameter of auxiliary winding (pre-magnetizing winding); At the auxiliary winding of the bottom of secondary side winding coiling; Capacity and number of turn parameter according to low voltage electric network voltage and auxiliary winding (pre-magnetizing winding) are determined adaptive voltage regulator; To assist Winding tap to connect with voltage regulator; Voltage regulator is accessed low voltage electric network; First with the breaker closing between voltage regulator and the low-voltage electrical network; The output voltage of voltage regulator gradually raises; The voltage regulator output voltage is finished the iron core pre-magnetizing after being raised to rated voltage, then to the first side winding idle-loaded switching-on.
Claims (3)
1. pre-magnetizing transformer with voltage regulator, it is characterized in that: comprise first side winding (1), voltage regulator (4), secondary side winding (2) and auxiliary winding (3), first side winding is arranged on the high-pressure side of transformer, secondary side winding and auxiliary winding are arranged on the low-pressure side of transformer, should auxiliary winding voltage be lower than secondary side voltage, electric current is the exciting current of iron core, phase place and first side winding same-phase; Auxiliary winding connects with the secondary side low voltage electric network by voltage regulator.
2. described a kind of pre-magnetizing transformer with voltage regulator according to claim 1 is characterized in that: according to the size of first side winding and secondary side winding technical parameter calculative determination iron core exciting current; According to the electric current of first side winding calculating and the voltage of low voltage electric network, calculate capacity and the number of turn parameter of auxiliary winding; At the auxiliary winding of the bottom of secondary side winding coiling; Capacity and number of turn parameter according to low voltage electric network voltage and auxiliary winding are determined adaptive voltage regulator; To assist Winding tap to connect with voltage regulator; Voltage regulator is accessed low voltage electric network; First with the breaker closing between voltage regulator and the low-voltage electrical network; The output voltage of voltage regulator gradually raises; The voltage regulator output voltage is finished the iron core pre-magnetizing after being raised to rated voltage, then to the first side winding idle-loaded switching-on.
3. pre-magnetizing transformer manufacture method with voltage regulator is characterized in that comprising following processing step:
1. the secondary side at transformer increases an auxiliary winding, and this auxiliary winding voltage is lower than secondary side voltage, and electric current is the exciting current of iron core, phase place and first side winding same-phase;
2. auxiliary winding connects with the secondary side low voltage electric network by voltage regulator;
3. first to the breaker closing between voltage regulator and the electrical network, voltage regulator output voltage gradually raises;
4. the voltage regulator output voltage raises gradually, and the auxiliary every phase voltage of winding also raises gradually, the iron core excitation, and after auxiliary winding voltage was raised to rated value, magnetic flux reached a stable state;
5. primary side is carried out idle-loaded switching-on, existed a stable state magnetic flux owing in the iron core this moment, and phase place is identical, then magnetizing inrush current can not occur in the first side winding idle-loaded switching-on process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104375197A CN102945735A (en) | 2012-11-06 | 2012-11-06 | Pre-magnetizing transformer with voltage regulator and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104375197A CN102945735A (en) | 2012-11-06 | 2012-11-06 | Pre-magnetizing transformer with voltage regulator and manufacture method thereof |
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| CN102945735A true CN102945735A (en) | 2013-02-27 |
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| CN2012104375197A Pending CN102945735A (en) | 2012-11-06 | 2012-11-06 | Pre-magnetizing transformer with voltage regulator and manufacture method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257200A (en) * | 2017-07-25 | 2017-10-17 | 顺特电气设备有限公司 | The many pulse wave resin-cast phase-shifting commutation transformation systems of Large Copacity |
| CN107424808A (en) * | 2017-08-19 | 2017-12-01 | 广东天圣高科股份有限公司 | A kind of roller type loop coil contact voltage regulator |
| CN108987075A (en) * | 2018-07-05 | 2018-12-11 | 上海电动工具研究所（集团）有限公司 | Electric system on high-tension transformer based on multistage preliminary filling magnetic function |
| CN110060857A (en) * | 2018-11-29 | 2019-07-26 | 合肥工业大学 | A kind of power transformer that can eliminate excitation surge current and its application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0257291A1 (en) * | 1986-07-30 | 1988-03-02 | Siemens Aktiengesellschaft | Circuit arrangement for the wiring of high power transformers |
| CN2817016Y (en) * | 2004-12-22 | 2006-09-13 | 刘江 | Soft-excitation transformer without excitation flow and without switch-on over-voltage |
| CN2857175Y (en) * | 2005-08-31 | 2007-01-10 | 特变电工沈阳变压器集团有限公司技术中心 | Neutral auto-transformer having constant third side voltage |
| CN101404202A (en) * | 2008-06-24 | 2009-04-08 | 江苏华鹏变压器有限公司 | Low-pressure side on-load tap changer |
| CN202871496U (en) * | 2012-11-06 | 2013-04-10 | 保定天威集团有限公司 | Pre-magnetizing transformer with voltage regulator |
-
2012
- 2012-11-06 CN CN2012104375197A patent/CN102945735A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0257291A1 (en) * | 1986-07-30 | 1988-03-02 | Siemens Aktiengesellschaft | Circuit arrangement for the wiring of high power transformers |
| CN2817016Y (en) * | 2004-12-22 | 2006-09-13 | 刘江 | Soft-excitation transformer without excitation flow and without switch-on over-voltage |
| CN2857175Y (en) * | 2005-08-31 | 2007-01-10 | 特变电工沈阳变压器集团有限公司技术中心 | Neutral auto-transformer having constant third side voltage |
| CN101404202A (en) * | 2008-06-24 | 2009-04-08 | 江苏华鹏变压器有限公司 | Low-pressure side on-load tap changer |
| CN202871496U (en) * | 2012-11-06 | 2013-04-10 | 保定天威集团有限公司 | Pre-magnetizing transformer with voltage regulator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257200A (en) * | 2017-07-25 | 2017-10-17 | 顺特电气设备有限公司 | The many pulse wave resin-cast phase-shifting commutation transformation systems of Large Copacity |
| CN107424808A (en) * | 2017-08-19 | 2017-12-01 | 广东天圣高科股份有限公司 | A kind of roller type loop coil contact voltage regulator |
| CN108987075A (en) * | 2018-07-05 | 2018-12-11 | 上海电动工具研究所（集团）有限公司 | Electric system on high-tension transformer based on multistage preliminary filling magnetic function |
| CN110060857A (en) * | 2018-11-29 | 2019-07-26 | 合肥工业大学 | A kind of power transformer that can eliminate excitation surge current and its application method |
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Application publication date: 20130227 |