CN103680881A - Voltage regulating transformer and rank difference voltage regulating method - Google Patents
Voltage regulating transformer and rank difference voltage regulating method Download PDFInfo
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- CN103680881A CN103680881A CN201310699331.4A CN201310699331A CN103680881A CN 103680881 A CN103680881 A CN 103680881A CN 201310699331 A CN201310699331 A CN 201310699331A CN 103680881 A CN103680881 A CN 103680881A
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Abstract
The invention provides a voltage regulating transformer which comprises a main transformer body and a string transformer body. The main transformer body comprises a main transformer public coil, a main transformer series-connection coil and a main transformer voltage regulating coil, wherein the main transformer public coil and the main transformer series-connection coil are in series connection with a wire inlet end, and the main transformer voltage regulating coil is in electromagnetic coupling with the main transformer public coil and the main transformer series-connection coil. The string transformer body comprises a string transformer primary coil and a string transformer secondary coil, wherein the string transformer primary coil and the string transformer secondary coil are mutually in electromagnetic coupling, the string transformer primary coil is in series connection with a main transformer voltage regulating coil, and the string transformer secondary coil in series connection with the main transformer series-connection coil is connected with a wire outlet end. A rank difference voltage regulating method of the voltage regulating transformer includes the following steps that transmission voltage in the string transformer secondary coil is changed through regulating of the number of turns of the connected main transformer series-connection coil; the number of turns of the connected main transformer voltage regulating coil is regulated, so that sensing voltage in the string transformer secondary coil is changed, the sensing voltage and / or the transmission voltage are / is regulated, so that voltage of the wire outlet end of the voltage regulating transformer is changed, wherein the voltage of the wire outlet end is equal to the algebraic sum of the transmission voltage and the sensing voltage.
Description
Technical field
The present invention relates to transformer regulating technical field, be specially a kind of voltage regulating transformer and rank difference pressure regulation method thereof.
Background technology
In prior art, in the industrial production such as metallurgical with its pressure regulation progression of special transformer because being subject to shunting switch to carry the restriction of voltage and current, range of regulation is little, very flexible can not be met consumers' demand; Simultaneously, restriction due to the voltage regulating mode structure of special transformer in prior art, is arranged on main transformer and voltage regulating transformer in a fuel tank, therefore along with the increase of capacity and range of regulation, volume and weight also significantly increases, and has brought great inconvenience to transportation installation and maintenance.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of voltage regulating transformer, voltage regulating transformer to be separated from rectifier transformer, structure is unique, volume compact.
The present invention is corresponding rank difference pressure regulation method also, and voltage regulating mode is flexible, and range of regulation is large.
The present invention is achieved through the following technical solutions:
A voltage regulating transformer, comprises that main transformer device body and string become device body; Described main transformer device body comprises main transformer common winding and the main transformer series coil with end of incoming cables series winding, with the main transformer voltage regulation coil of main transformer common winding and main transformer series coil electromagnetic coupled; Described string becomes string change primary winding and the string change secondary coil that device body comprises mutual electromagnetic coupling; String becomes primary winding connects with main transformer voltage regulation coil, and the string change secondary coil being connected on main transformer series coil is connected with leading-out terminal.
Preferably, main transformer series coil is accessed and is excised by off circuit tap changer, and main transformer series coil becomes secondary coil self-coupling by off circuit tap changer and string and is connected.
Further, main transformer series coil is in series with string change the corresponding of secondary coil respectively by three single-phase excitation-free tapping switchs.
Preferably, main transformer voltage regulation coil adopts on load tap changer access and the excision that is provided with polar selecting switch.
Further, main transformer voltage regulation coil is connected by a three-phase on load tap changer and string change primary winding.
Preferably, main transformer device body and string become device body and all adopt three-phase three-limb machine body structure, and are arranged in same fuel tank.
A kind of rank difference pressure regulation method based on voltage regulating transformer of the present invention of the present invention, comprises the steps, by regulating the access number of turn of main transformer series coil to change the step that string becomes transmission voltage in secondary coil; By regulating the access number of turn of main transformer voltage regulation coil to change the step that string becomes induced voltage in secondary coil; By regulating induced voltage and/or transmission voltage to change the step of voltage regulating transformer outlet voltage; Wherein outlet voltage equals the algebraical sum of transmission voltage and induced voltage.
Preferably, the gear maximal regulated progression of rank difference pressure regulation equals the gear progression of main transformer series coil and the gear progression of main transformer voltage regulation coil is long-pending.
Preferably, the access number of turn of main transformer series coil is regulated by off circuit tap changer gear selecting.
Preferably, the access number of turn of main transformer voltage regulation coil is regulated by load tap changer gear selecting.
Compared with prior art, the present invention has following useful technique effect:
Voltage regulating transformer of the present invention, by the electromagnetic coupled relation of main transformer voltage regulation coil and main transformer common winding and main transformer series coil, on main transformer voltage regulation coil, produce induced voltage, access by main transformer voltage regulation coil tap is adjusted at the on-load voltage size on string change primary winding with excision, becomes primary winding become the induced voltage size on secondary coil with electromagnetic coupled relation and then adjustment string that string becomes secondary coil by string; By the self-coupling mode of main transformer common winding and main transformer series coil, adjust and be directly transferred to the transmission voltage size that string becomes secondary coil, comprehensively realized thus the control of outlet voltage and adjusting, structure is unique, simple to operate, range of regulation is large, has also guaranteed the invariable of leading-out terminal output current, improve the stability of product, significantly reduced transformer loss.
Further, by selecting voltage regulating mode and switch configuration and then coordinating corresponding pin configuration, meet the requirement of user to product pressure regulation tap; Thereby voltage regulating transformer is separated from rectifier transformer, make separate unit voltage regulating transformer can coordinate many rectifier transformers to use, both volume and the weight of separate unit rectifier transformer had been reduced, guarantee transportation, can be again user and reduce consumable material, reduce instantly and transformation or the more production cost of exchange device later.
The rank difference pressure regulation method of voltage regulating transformer of the present invention, by the adjusting of outlet voltage is shared in two pressure regulation links and is carried out, utilize respectively the number of turn access of main transformer series coil and main transformer voltage regulation coil to coordinate adjusting with excision, what by main transformer series coil, regulate is coarse adjustment, what by main transformer voltage regulation coil, regulate is fine tuning, the gear progression that makes pressure regulation is that the progression of two pressure regulation link gears is long-pending, the rank difference pressure regulation of wider more multistage number of having compared existing techniques in realizing.
Further, by the selection to main transformer series coil and main transformer voltage regulation coil tap changer, guaranteed in main transformer series coil the safety of circuit when large electric current flows through and stable, and the adjusting to outlet voltage can realize not power-off have the work of carrying in main transformer voltage regulation coil in the situation that
Accompanying drawing explanation
Fig. 1 is the winding coupling figure of voltage regulating transformer of the present invention.
In figure: I is main transformer device body, II is string change device body, and A, B, C are three-phase end of incoming cables, a, b, c three-phase leading-out terminal, Am, Bm, Cm are the output of main transformer voltage regulation coil, the input that am, bm, cm are string change primary winding, k1-k3 is polar selecting switch, G1-G3 is main transformer common winding, C1-C3 is main transformer series coil, T1-T3 is main transformer voltage regulation coil, and H1-H3 is string change primary winding, and L1-L3 goes here and there to become secondary coil.
Embodiment
Below in conjunction with concrete example, the present invention is described in further detail, and the explanation of the invention is not limited.
A kind of voltage regulating transformer of the present invention, as shown in Figure 1, comprises that main transformer device body and string become device body; Main transformer device body comprises main transformer series coil C1, C2, C3, main transformer common winding G1, G2, G3 and main transformer voltage regulation coil T1, T2, T3; String becomes device body and comprises that string becomes primary winding H1, H2, H3 and string and becomes secondary coil L1, L2, L3.
In this preferred embodiment, as shown in Figure 1, end of incoming cables A, B, C contact with C1, C2, C3 coil respectively, and C1, C2, C3 coil are connected and formed self-coupling with L1, L2, L3 coil respectively by three single-phase excitation-free tapping switchs with G1, G2, G3 coil respectively and be connected; T1, T2, T3 coil are respectively electromagnetic coupled relation with the corresponding C1 being cascaded, C2, C3 coil and G1, G2, G3 coil, T1, T2, T3 coil are connected by a three-phase on load tap changer with H1, H2, H3 coil respectively, H1, H2, H3 coil and L1, L2, L3 coil are respectively electromagnetic coupled relation, and L1, L2, L3 coil are connected with leading-out terminal a, b, c respectively.Main transformer device body and string become device body and all adopt three-phase three-limb machine body structure, and are arranged in same fuel tank.
In this preferred embodiment based on voltage regulating transformer of the present invention and rank difference pressure regulation method thereof, comprise the steps, by regulating the access number of turn of C1, C2, C3 coil to change the step of transmission voltage in L1, L2, L3 coil; By regulating the access number of turn of T1, T2, T3 coil to change the step of induced voltage in L1, L2, L3 coil; By regulating induced voltage and/or transmission voltage to change the step of voltage regulating transformer outlet voltage; Wherein outlet voltage equals the algebraical sum of transmission voltage and induced voltage.
Wherein, it is long-pending that the gear maximal regulated progression of rank difference pressure regulation equals the gear progression of the gear progression of C1, C2, C3 coil and T1, T2, T3 coil.In this preferred embodiment, the access of C1, C2, C3 coil turn is regulated by off circuit tap changer gear selecting with excision; The access of T1, T2, T3 coil turn is regulated by load tap changer gear selecting with excision.
Concrete, as shown in Figure 1, main transformer device body I and string become device body II and all adopt three-phase three-limb machine body structure.Self coupling non-excitation pressure adjustment part, as shown in Figure 1, selects 5 grades of linear voltage regulations as coarse adjustment, and because the electric current of input side is larger, therefore selects three single-phase excitation-free tapping switchs, also guarantees larger electric current output simultaneously, satisfies the demands.On-load voltage regulation part, as shown in Figure 1, select the positive-negative voltage-regulation of totally 35 grades as fine tuning, because string becomes less that the capacity of device body can design, therefore string becomes H1, H2, the H3 coil in device body, and the electric current of T1, T2 in main transformer device body, T3 coil is also less, thereby select a three-phase on load tap changer.
During work, by main transformer device T1 with it, T2, T3 coil is given respectively the H1 of series connection with it, H2, H3 coil power supply, respectively and H1, H2, the L1 of H3 coil electromagnetism coupling, L2, the induced voltage that L3 coil just induces is a part for outlet voltage, again with by C1, C2, C3 coil and G1, G2, G3 coil directly exports respectively L1 to, L2, the algebraical sum of the transmission voltage of L3 coil is just the actual output voltage of leading-out terminal, thereby can make leading-out terminal output voltage on a large scale, realize steadily regulates, and the not power-off rank difference of carrying that has that can realize voltage in each grade of off circuit tap changer regulates.
When C1, C2, C3 coil and G1, G2, the G3 coil when from end of incoming cables to main transformer device body applies constant alternating voltage, by three off circuit tap changers, select different C1, C2, C3 coil tap just to have a transformable transmission voltage directly to export by L1, the L2, the L3 coil that are connected with off circuit tap changer, the part that the direct transmission voltage of this output is outlet voltage.
When C1, C2, C3 coil and G1, G2, the G3 coil when from end of incoming cables to main transformer device body applies constant alternating voltage, because T1, T2, T3 coil in main transformer device body are electromagnetic coupled relations with the corresponding C1 being serially connected, C2, C3 coil and G1, G2, G3 coil respectively, T1, T2, T3 coil just can produce induction output voltage, this output voltage regulates by the on load tap changer being connected with T1, T2, T3 coil, can realize output voltage rank difference even variation.H1, H2, H3 coil are connected with T1, T2, T3 coil respectively simultaneously, therefore this output voltage is also the input voltage of H1, H2, H3 coil, and also can rank difference even variation.String becomes L1, L2, L3 coil in device body and is coupled with H1, H2, H3 coil electromagnetism respectively, and L1, L2, L3 coil output also can produce induction output voltage, also can rank difference even variation.The induced voltage of this output is another part of outlet voltage.
The transmission voltage of above-mentioned direct output and the induced voltage of output are series relationship, and both algebraical sums are just the actual output voltage of leading-out terminal.Its pressure regulation progression is that off circuit tap changer gear number and on load tap changer gear number are long-pending, and as shown in Figure 1, this example is altogether for amassing 175 grades that obtain without 35 grades of 5 grades, excitation access switch and on load tap changeres are.When voltage regulating transformer input side applies in the situation of constant voltage, outlet side output voltage, power can uniform and stable change in a big way; And in each shelves of off circuit tap changer, can realize and carry 35 grades of rank difference pressure regulation variations of not power-off.And the output current of transformer outlet side leading-out terminal keeps invariable.
Claims (10)
1. a voltage regulating transformer, is characterized in that, comprises that main transformer device body and string become device body; Described main transformer device body comprises main transformer common winding and the main transformer series coil with end of incoming cables series winding, with the main transformer voltage regulation coil of main transformer common winding and main transformer series coil electromagnetic coupled; Described string becomes string change primary winding and the string change secondary coil that device body comprises mutual electromagnetic coupling; String becomes primary winding connects with main transformer voltage regulation coil, and the string change secondary coil being connected on main transformer series coil is connected with leading-out terminal.
2. a kind of voltage regulating transformer according to claim 1, is characterized in that, described main transformer series coil is accessed and excised by off circuit tap changer, and main transformer series coil becomes secondary coil self-coupling by off circuit tap changer and string and is connected.
3. a kind of voltage regulating transformer according to claim 1 and 2, is characterized in that, described main transformer series coil becomes the corresponding of secondary coil with string respectively by three single-phase excitation-free tapping switchs and is in series.
4. a kind of voltage regulating transformer according to claim 1, is characterized in that, described main transformer voltage regulation coil adopts on load tap changer access and the excision that is provided with polar selecting switch.
5. according to a kind of voltage regulating transformer described in claim 1 or 4, it is characterized in that, described main transformer voltage regulation coil becomes primary winding by a three-phase on load tap changer and string and connects.
6. a kind of voltage regulating transformer according to claim 1, is characterized in that, described main transformer device body and string become device body and all adopt three-phase three-limb machine body structure, and are arranged in same fuel tank.
7. the rank difference pressure regulation method based on voltage regulating transformer described in claim 1, is characterized in that, comprise the steps,
By regulating the access number of turn of main transformer series coil to change the step that string becomes transmission voltage in secondary coil; By regulating the access number of turn of main transformer voltage regulation coil to change the step that string becomes induced voltage in secondary coil; By regulating induced voltage and/or transmission voltage to change the step of voltage regulating transformer outlet voltage; Wherein outlet voltage equals the algebraical sum of transmission voltage and induced voltage.
8. the rank difference pressure regulation method of a kind of voltage regulating transformer according to claim 7, is characterized in that, the gear maximal regulated progression of rank difference pressure regulation equals the gear progression of main transformer series coil and the gear progression of main transformer voltage regulation coil is long-pending.
9. the rank difference pressure regulation method of a kind of voltage regulating transformer according to claim 7, is characterized in that, the access number of turn of main transformer series coil is regulated by off circuit tap changer gear selecting.
10. the rank difference pressure regulation method of a kind of voltage regulating transformer according to claim 7, is characterized in that, the access number of turn of main transformer voltage regulation coil is regulated by load tap changer gear selecting.
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| CN201310699331.4A CN103680881B (en) | 2013-12-18 | 2013-12-18 | A kind of adjustable transformer and rank difference pressure regulation method thereof |
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| CN201310699331.4A CN103680881B (en) | 2013-12-18 | 2013-12-18 | A kind of adjustable transformer and rank difference pressure regulation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104701868A (en) * | 2015-03-27 | 2015-06-10 | 中国西电电气股份有限公司 | Variable voltage grade type current disturbance source |
| GB2521599A (en) * | 2013-12-13 | 2015-07-01 | David Laurence Killinbeck Bowers | An electrical transformer apparatus |
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| CN102360849A (en) * | 2011-07-12 | 2012-02-22 | 三变科技股份有限公司 | Double-high and low voltage on-load regulating transformer |
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| CN102664541A (en) * | 2012-05-09 | 2012-09-12 | 广西柳州特种变压器有限责任公司 | Energy-saving-type rectification system |
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| CN101789305A (en) * | 2010-02-25 | 2010-07-28 | 上官远定 | Tertiary winding continuous voltage regulation rectifier transformer |
| CN101819854A (en) * | 2010-04-22 | 2010-09-01 | 江西变压器科技股份有限公司 | Tertiary winding multi-stage coarse and fine continuous voltage adjustment rectifier transformer |
| CN102360849A (en) * | 2011-07-12 | 2012-02-22 | 三变科技股份有限公司 | Double-high and low voltage on-load regulating transformer |
| CN102543401A (en) * | 2012-03-14 | 2012-07-04 | 江西变压器科技股份有限公司 | Two-differential tertiary winding voltage regulating rectifier transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2521599A (en) * | 2013-12-13 | 2015-07-01 | David Laurence Killinbeck Bowers | An electrical transformer apparatus |
| GB2521599B (en) * | 2013-12-13 | 2018-03-28 | David Laurence Killinbeck Bowers | An electrical transformer apparatus |
| CN104701868A (en) * | 2015-03-27 | 2015-06-10 | 中国西电电气股份有限公司 | Variable voltage grade type current disturbance source |
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| CN103680881B (en) | 2016-06-29 |
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Effective date of registration: 20170523 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Co-patentee after: Xi'an west change special electric Co., Ltd. Patentee after: China XD Electronic Corporation Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: China XD Electronic Corporation |
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