CN104465053A - High-capacity three-phase combined type phase-shift transformer - Google Patents
High-capacity three-phase combined type phase-shift transformer Download PDFInfo
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- CN104465053A CN104465053A CN201410744863.XA CN201410744863A CN104465053A CN 104465053 A CN104465053 A CN 104465053A CN 201410744863 A CN201410744863 A CN 201410744863A CN 104465053 A CN104465053 A CN 104465053A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention relates to a high-capacity three-phase combined type phase-shift transformer which comprises three single-phase transformers. The three single-phase transformers are respectively used as a phase A, a phase B and a phase C and are combined with one another to form a three-phase transformer, each single-phase transformer comprises a series transformer and an excitation transformer which are arranged in the same oil tank and are independent from each other, the series transformer of each phase comprises series coils and excitation coils, each excitation transformer comprises a voltage regulation excitation coil and a voltage regulation coil, the head end of each voltage regulation excitation coil of each phase is connected with center taps of the series coils of the series transformer of the phase, the tail end of each voltage regulation excitation coil is used as a neutral point to be led out of the corresponding oil tank, the head end of each voltage regulation coil is led out of the corresponding oil tank to be connected with an angular joint of the excitation coils of the two other phases, and the tail end of each voltage regulation coil is used as a neutral point to be led out of the corresponding oil tank. The high-capacity three-phase combined type phase-shift transformer has the advantages that the high-capacity three-phase combined type phase-shift transformer is simple in structure, voltage class of tap switches can be lowered, connection structures between various devices can be simplified, the mounting difficulty can be lowered, and the high-capacity three-phase combined type phase-shift transformer which is a high-capacity phase-shift transformer at high voltage class is high in practicality.
Description
Technical field
The present invention relates to a kind of phase shifting transformer, be specifically related to a kind of high-capacity three-phase composite type phase shifting transformer.
Background technology
Phase shifting transformer, by the phase difference between adjustment input and output voltage, makes power system operation stability and high efficiency more.The general principle of phase shifting transformer phase shift produces a voltage between mains side and load-side, this voltage and mains side voltage have certain phase angle difference, and effective value size can adjust, and be load side voltage with mains side voltage superposition, make between mains side and load side voltage, to produce phase place change.Phase shifting transformer conventional at present comprises holocentric formula and diplocardia formula two kinds of basic structures.The general principle of holocentric formula phase shifting transformer is connected with another a part for a phase voltage, therefore relatively simple for structure, but its voltage regulation coil is positioned at circuit head end, shunting switch electric pressure higher and the various overvoltage of directly bearing in operation of power networks and overcurrent, be not therefore suitable for voltage levels and Large Copacity condition.Two heart type structure by series transformer and excitation transformer dimerous, these two parts are contained in two independently on iron core, and are contained in two respectively independently in oil tank of transformer.Excitation transformer is often made up of pressure regulation magnet exciting coil and voltage regulation coil, and joint group is Y/Y, and pressure regulation magnet exciting coil provides excitation for excitation transformer, and each tap of voltage regulation coil is received on load tap changer, and on load tap changer is with positive and negative change over selector.Diplocardia formula phase shifting transformer and holocentric formula structure compared complexity, but its shunting switch electric pressure is lower, therefore the occasion of Large Copacity and voltage levels is applicable to, but connecting lead wire insulation level and line insulation are on close level in the syndeton between two fuel tanks of series transformer and excitation transformer, therefore syndeton more complicated, and the installation difficulty of two fuel tanks is also higher.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of high-capacity three-phase composite type phase shifting transformer, the object that diplocardia formula phase shifting transformer reduces the electric pressure of shunting switch can be reached, the syndeton between each several part can be simplified again simultaneously, reduce technical difficulty, be applicable to more voltage levels and more jumbo occasion.
For solving the problem, the technical scheme that the present invention takes is: a kind of high-capacity three-phase composite type phase shifting transformer, comprise three single-phase transformers, respectively as A, B, C three-phase is combined into three-phase transformer, every platform single-phase transformer comprises series transformer and excitation transformer, both are placed in same fuel tank and are divided into two independently device body parts, the transformer that is often in series comprises series coil and magnet exciting coil, wherein the head end of series coil and end are respectively as mains side input terminal and load-side lead-out terminal, the head of magnet exciting coil, end all draws fuel tank, when three-phase runs jointly, the first joining distal ends of three-phase series coil is linked to be dihedral, the first joining distal ends of three phase excitation coil is linked to be dihedral, excitation transformer comprises pressure regulation magnet exciting coil and voltage regulation coil, the head end of pressure regulation magnet exciting coil is connected with the centre cap of series coil in the series transformer of homophase, end is that neutral point draws fuel tank, the head end of voltage regulation coil is drawn fuel tank and is connected with the dihedral node of all the other two-phase excitation coils, end draws fuel tank as neutral point, when three-phase runs jointly, three phase voltage regulating magnet exciting coil is Y-connection, and three phase voltage regulating coil is Y-connection.A, B, C three-phase is placed in three different fuel tanks by three phase combined phase shifting transformer respectively, size and the weight of single transformer can be reduced, be convenient to transport and install, therefore be applicable in more voltage levels and more under Large Copacity occasion, simultaneously the head end of pressure regulation magnet exciting coil is connected in same fuel tank with homophase series coil is centre tapped, does not need by special syndeton connected, also need not draw fuel tank, therefore structure herein simplifies greatly, reduces technical difficulty.Each line end is drawn by sleeve pipe, and between three-phase, the material such as available cable realizes being flexible coupling, and in-site installation operation, test and operation maintenance are also more easy.
All current limiting reactor is installed in the first and end of described series coil, for alleviating the impact of electrical network short circuit currents to phase shifting transformer.
Current limiting reactor is in series with in described voltage regulation coil.When phase shifting transformer capacity is larger, multiple series coil is adopted to connect, multiple magnet exciting coil is in parallel, multiple pressure regulation magnet exciting coil is in parallel, the structure of multiple voltage regulation coil series connection, because in voltage regulation coil, electric current is excessive, therefore adopts multiple stage on load tap changer, now seal in every bar voltage regulation coil branch road current limiting reactor for balancing branch in electric current distribute, and limit the damage that issuable short circuit current causes on load tap changer.
Structure of the present invention is simple, can reduce the electric pressure of shunting switch, also can simplify the syndeton between each device body, reduces installation difficulty, in the phase shifting transformer of Large Copacity and voltage levels, have stronger practicality.
Accompanying drawing explanation
Fig. 1 is the single-phase elementary diagram of embodiment one;
Fig. 2 is embodiment one elementary diagram;
Fig. 3 is phase-shift theory figure of the present invention;
Fig. 4 is the single-phase elementary diagram of embodiment two;
Fig. 5 is the single-phase elementary diagram of embodiment three;
In figure, 1, series transformer, 2, excitation transformer, SVA-SVC is respectively A phase, B phase, C are in series coil, SVA1, SVA2 are that A is in series two coils of coil, EVA-EVC is respectively A phase, B phase, C phase excitation coil, EVA1, EVA2 are two coils of A phase excitation coil, TVA-TVC is respectively A phase, B phase, C phase voltage regulation coil, TVA1, TVA2 are two coils of A phase voltage regulation coil, TEVA-TEVC is respectively A phase, B phase, C phase pressure regulation magnet exciting coil, and TEVA1, TEVA2 are two coils of A phase pressure regulation magnet exciting coil, L1-L2, reactor.
Embodiment
embodiment one
A kind of high-capacity three-phase composite type phase shifting transformer, comprise three single-phase transformers, be combined into three-phase transformer respectively as A, B, C three-phase, every platform single-phase transformer comprises series transformer 1 and excitation transformer 2, and both are placed in same fuel tank and are divided into two independently device body parts.As shown in Figure 1, for A phase, series transformer 1 comprises series coil SVA and magnet exciting coil EVA, draw four terminals: series coil head end SA and series coil end LA is respectively as mains side input terminal and load-side lead-out terminal, the head end sa of magnet exciting coil, magnet exciting coil end la all draws fuel tank, excitation transformer 2 comprises pressure regulation magnet exciting coil TEVA and voltage regulation coil TVA, the head end ta of pressure regulation magnet exciting coil is connected with the centre cap of series coil SVA in the series transformer 1 of homophase, end is that neutral point draws fuel tank, voltage regulation coil head end TA draws fuel tank, end draws fuel tank as neutral point.B phase, C phase are identical with A phase structure.As shown in Figure 2, when three-phase runs jointly, the first joining distal ends of three-phase series coil SVA-SVC is linked to be dihedral, and the first joining distal ends of three phase excitation coil EVA-EVC is linked to be dihedral; Three phase voltage regulating magnet exciting coil TEVA-TEVC is Y-connection, and three phase voltage regulating coil TVA-TVC is Y-connection.The first joining distal ends of magnet exciting coil EVA-EVC of three-phase is linked to be dihedral, the every two dihedral nodes be connected are connected with the voltage regulation coil head end of third phase, and adjust by load tap changer the number of turn that voltage regulation coil seals in circuit and change voltage swing in voltage regulation coil and polarity, phase-shift theory as shown in Figure 3, the iron core that this voltage is series transformer provides excitation, make the magnet exciting coil of corner connection in series transformer produces one advanced or lag behind the voltage of pressure regulation magnet exciting coil voltage 90 ° of homophase excitation transformer.This voltage responds in corresponding series coil that to produce with homophase pressure regulation magnet exciting coil phase difference be the voltage Δ U of 90 °
1with Δ U
2, these two voltages make the mains side voltage U of phase shifting transformer
sAwith load side voltage U
lAbetween produce the change of a phase angle, and output voltage size is identical with input voltage size, realizes the change of phase angle between mains side and load side voltage, by the position of regulation tap switch, realize this phase difference size and advanced or delayed between adjustment.
embodiment two
A kind of high-capacity three-phase composite type phase shifting transformer, as shown in Figure 4, all be provided with for alleviating electrical network short circuit currents current limiting reactor L1, L2 to the impact of phase shifting transformer at described series coil head end SA and series coil end LA, other structures are identical with embodiment one.
embodiment three
A kind of high-capacity three-phase composite type phase shifting transformer, as shown in Figure 5, because phase shifting transformer capacity is larger, adopt two series coil SVA1, SVA2 connects, two magnet exciting coil EVA1, EVA2 is in parallel, two pressure regulation magnet exciting coil TEVA1, TEVA2 is in parallel, two voltage regulation coil TVA1, the structure of TVA2 series connection, because in voltage regulation coil, electric current is excessive, therefore three on load tap changeres are adopted, seal in three branch roads and distribute for balancing electric current in three branch roads and limit the current limiting reactor L1 of issuable short circuit current to the damage that on load tap changer causes, L2, other structures are identical with embodiment one.
Claims (3)
1. a high-capacity three-phase composite type phase shifting transformer, it is characterized in that: comprise three single-phase transformers, respectively as A, B, C three-phase is combined into three-phase transformer, every platform single-phase transformer comprises series transformer and excitation transformer, both are placed in same fuel tank and are divided into two independently device body parts, the transformer that is often in series comprises series coil and magnet exciting coil, wherein the head end of series coil and end are respectively as mains side input terminal and load-side lead-out terminal, the head of magnet exciting coil, end all draws fuel tank, when three-phase runs jointly, the first joining distal ends of three-phase series coil is linked to be dihedral, the first joining distal ends of three phase excitation coil is linked to be dihedral, excitation transformer comprises pressure regulation magnet exciting coil and voltage regulation coil, the head end of pressure regulation magnet exciting coil is connected with the centre cap of series coil in the series transformer of homophase, end is that neutral point draws fuel tank, the head end of voltage regulation coil is drawn fuel tank and is connected with the dihedral node of all the other two-phase excitation coils, end draws fuel tank as neutral point, when three-phase runs jointly, three phase voltage regulating magnet exciting coil is Y-connection, and three phase voltage regulating coil is Y-connection.
2. high-capacity three-phase composite type phase shifting transformer according to claim 1, is characterized in that: be all provided with current limiting reactor in the first and end of described series coil.
3. high-capacity three-phase composite type phase shifting transformer according to claim 1, is characterized in that: in described voltage regulation coil, be in series with current limiting reactor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744863.XA CN104465053B (en) | 2014-12-09 | 2014-12-09 | A kind of high-capacity three-phase combination type phase-shifting transformer |
| PCT/CN2015/096443 WO2016091123A1 (en) | 2014-12-09 | 2015-12-04 | High-capacity three-phase combined type phase-shift transformer |
| EP15868363.1A EP3232452B1 (en) | 2014-12-09 | 2015-12-04 | High-capacity three-phase combined type phase-shift transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744863.XA CN104465053B (en) | 2014-12-09 | 2014-12-09 | A kind of high-capacity three-phase combination type phase-shifting transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104465053A true CN104465053A (en) | 2015-03-25 |
| CN104465053B CN104465053B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744863.XA Active CN104465053B (en) | 2014-12-09 | 2014-12-09 | A kind of high-capacity three-phase combination type phase-shifting transformer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3232452B1 (en) |
| CN (1) | CN104465053B (en) |
| WO (1) | WO2016091123A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016091123A1 (en) * | 2014-12-09 | 2016-06-16 | 山东电工电气集团有限公司 | High-capacity three-phase combined type phase-shift transformer |
| CN106053921A (en) * | 2016-08-02 | 2016-10-26 | 中国电力科学研究院 | Step voltage calculation method under symmetrical double-core phase shift transformer load condition |
| CN107968576A (en) * | 2017-12-27 | 2018-04-27 | 国网宁夏电力有限公司检修公司 | A kind of phased high current source generator device |
| CN113077977A (en) * | 2021-04-13 | 2021-07-06 | 保定天威保变电气股份有限公司 | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor |
| CN113077978A (en) * | 2021-04-13 | 2021-07-06 | 保定天威保变电气股份有限公司 | Novel voltage-regulating phase-shifting transformer with high-capacity double-device height impedance and additional reactor |
| CN113611513A (en) * | 2021-07-23 | 2021-11-05 | 保定天威保变电气股份有限公司 | Phase modulation transformer with large phase shift angle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3937198A1 (en) * | 2020-07-06 | 2022-01-12 | General Electric Technology GmbH | Power transformer assembly |
| CN113283204B (en) * | 2021-05-19 | 2022-09-30 | 广东电网有限责任公司 | Electromagnetic transient modeling method and system for on-load voltage regulation controller |
| CN216672848U (en) * | 2021-12-01 | 2022-06-03 | 日立能源瑞士股份公司 | Converter system, rectifying station and inverter station for direct current transmission |
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| CN204215878U (en) * | 2014-12-09 | 2015-03-18 | 山东电力设备有限公司 | A kind of high-capacity three-phase composite type phase shifting transformer |
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| CN101354956B (en) * | 2008-05-28 | 2010-11-17 | 保定天威集团有限公司 | Large-capacity double-body phase-shifting transformer |
| KR101715296B1 (en) * | 2011-10-06 | 2017-03-13 | 현대중공업 주식회사 | The winding circuit of the phase shifting transformer having the voltage regulating function |
| CN104465053B (en) * | 2014-12-09 | 2016-08-03 | 山东电力设备有限公司 | A kind of high-capacity three-phase combination type phase-shifting transformer |
-
2014
- 2014-12-09 CN CN201410744863.XA patent/CN104465053B/en active Active
-
2015
- 2015-12-04 WO PCT/CN2015/096443 patent/WO2016091123A1/en active Application Filing
- 2015-12-04 EP EP15868363.1A patent/EP3232452B1/en active Active
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| JPS6328015A (en) * | 1986-07-22 | 1988-02-05 | Mitsubishi Electric Corp | Autotransformer |
| CN2484625Y (en) * | 2001-06-01 | 2002-04-03 | 沈阳沈变中型变压器有限责任公司 | Voltage-regulating transformer |
| CN101354957A (en) * | 2008-05-28 | 2009-01-28 | 保定天威集团有限公司 | Large-capacity double-body pressure-regulating phase-shifting transformator |
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| CN201829327U (en) * | 2010-06-30 | 2011-05-11 | 特变电工沈阳变压器集团有限公司 | Double body structure generator step-up transformer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016091123A1 (en) * | 2014-12-09 | 2016-06-16 | 山东电工电气集团有限公司 | High-capacity three-phase combined type phase-shift transformer |
| CN106053921A (en) * | 2016-08-02 | 2016-10-26 | 中国电力科学研究院 | Step voltage calculation method under symmetrical double-core phase shift transformer load condition |
| CN107968576A (en) * | 2017-12-27 | 2018-04-27 | 国网宁夏电力有限公司检修公司 | A kind of phased high current source generator device |
| CN113077977A (en) * | 2021-04-13 | 2021-07-06 | 保定天威保变电气股份有限公司 | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor |
| CN113077978A (en) * | 2021-04-13 | 2021-07-06 | 保定天威保变电气股份有限公司 | Novel voltage-regulating phase-shifting transformer with high-capacity double-device height impedance and additional reactor |
| CN113611513A (en) * | 2021-07-23 | 2021-11-05 | 保定天威保变电气股份有限公司 | Phase modulation transformer with large phase shift angle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104465053B (en) | 2016-08-03 |
| EP3232452A4 (en) | 2018-01-31 |
| WO2016091123A1 (en) | 2016-06-16 |
| EP3232452A1 (en) | 2017-10-18 |
| EP3232452B1 (en) | 2020-05-20 |
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Inventor after: Zhang Liguo Inventor after: Zhang Zhiqiang Inventor after: Yang Tongxun Inventor after: Zhao Xiaochun Inventor before: Zhang Zhiqiang Inventor before: Zhang Liguo Inventor before: Yang Tongxun |
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Effective date of registration: 20170328 Address after: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Patentee after: Shandong Power Equipment Company Patentee after: State Grid Anhui Electric Power Company Address before: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Patentee before: Shandong Power Equipment Company |
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