CN101552114B - Application method of tapping switch adopting M type in star/angle conversion coil - Google Patents
Application method of tapping switch adopting M type in star/angle conversion coil Download PDFInfo
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- CN101552114B CN101552114B CN2009100100579A CN200910010057A CN101552114B CN 101552114 B CN101552114 B CN 101552114B CN 2009100100579 A CN2009100100579 A CN 2009100100579A CN 200910010057 A CN200910010057 A CN 200910010057A CN 101552114 B CN101552114 B CN 101552114B
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Abstract
The invention relates to an application method of a tapping switch adopting M type in a star/angle conversion coil, which aims at solving the problem that the M-type tapping switch of an on-load tap changer (OLTC) with a neutral point which is a deadlock can not realize star/angle conversion, thus not capable of satisfying the requirement of frequent changes of voltage by using one OLTC in coal mine areas. The method comprises the following steps: the upper part of a three-phase winding of the OLTC is respectively provided with a non-excitation tapping switch used for star/angle conversion; the tap of a voltage regulating coil at the lower part is used for connecting each tap joint of the M-type on-load tapping switch; and a moving contact at the lowermost part is the neutral point of the M-type switch and is the deadlock. When the tapping switch is at first gear, the head and the tail of the coil are connected to form an angle joint connecting line; and when the tapping switch is at second gear, the two taps are connected together, and the moving contact of the M-type switch forms a star joint connecting line, and the on-load switch can normally regulate the voltage. The application method has the beneficial effects that when using the M-type tapping switch with the neutral point which is the deadlock, the OLTC realizes the star/angle conversion and solves the problem of voltage conversion; moreover, the functions of two OLTCs are realized by using one OLTC, thus reducing the cost.
Description
Technical field:
The present invention relates to a kind of star/angle conversion method of on-load tap-changing transformer, relate in particular to the method that can realize star/angle conversion when a kind of big capacity on-load tap-changing transformer uses M type shunting switch.
Background technology:
At area, a lot of colliery, the on-load tap-changing transformer capacity that uses is bigger, but voltage low (so electric current is big), generally below 10kV, and working voltage needs often to change, and may use 6kV voltage in two years, and voltage needs to become 10kV after 2 years, and after having used several years, needing to use the voltage of 6kV again, change in voltage is more frequent.In this case, two transformers need be provided usually, normal transmission operation could be guaranteed.The shunting switch of this on-load tap-changing transformer belong to the neutral point voltage regulating mode, and M type switch neutral point is a fast knot owing to electric current is selected the M type greatly for use, does not realize the conversion that Y-connection-dihedral connects under the normal condition.Therefore, use one to have under the situation of carrying transformer, can't adapt to the frequent demand of change in voltage in the area, colliery.
Summary of the invention:
The present invention for the shunting switch of the on-load tap-changing transformer that solves prior art and exist owing to electric current is selected the M type greatly for use, belong to the neutral point voltage regulating mode, and M type switch neutral point is a fast knot, do not realize under the normal condition that star/dihedral connects conversion, therefore, selecting M type shunting switch neutral point for use one of area, colliery use is having under the situation of carrying transformer of fast knot, can't satisfy the frequent technical problems such as demand of change in voltage, provide a kind of on-load tap-changing transformer to adopt the application process of M type shunting switch in star/star/angle conversion coil, this method realizes by following step:
1. basic structure: this star/star/angle conversion coil is divided into high-tension coil and voltage regulation coil two parts, mainly comprises star/star/angle conversion coil, and (span of N tap is five～17 taps to M type on load tap changer, with seven taps is example) and off circuit tap changer, A, B, C is the first head of three-phase high-voltage coil, Xk, Yk, Zk is the tail head of three-phase high-voltage coil, X7, X6, X5, X4, X3, X2, X1 and X1 ', Y7, Y6, Y5, Y4, Y3, Y2, Y1 and Y1 ', Z7, Z6, Z5, Z4, Z3, Z2, Z1 and Z1 ' are the taps of three phase voltage regulating coil; Also separated into two parts, first is a tap (tap is independently), second portion is to be switched to seven taps (order connects together) from two, also has M type on load tap changer (totally seven taps) and off circuit tap changer (1 tap and 2 taps).
2. connected mode: the first head of high-tension coil is connected on the off circuit tap changer, the tail head of high-tension coil is connected the first head (being the second portion of voltage regulation coil) of voltage regulation coil, the tail head of the second portion of voltage regulation coil is connected on the off circuit tap changer, the first head of the first of voltage regulation coil also is connected on the off circuit tap changer, and the tail head of the first of voltage regulation coil is connected on the M type on load tap changer.
3. pressure regulation method: when off circuit tap changer during in 1 tap, M type on load tap changer is also in a tap, at this moment high-tension coil connects together with the second portion of line pressure regulator circle, the first of voltage regulation coil disconnects, the fast knot point of M type on load tap changer is equivalent to unsettled, coil is realized the angle joint connecting line mode, and this moment, coil was corner connection; When off circuit tap changer during in 2 taps, at this moment high-tension coil connects together with the second portion of line pressure regulator circle, simultaneously, the first of voltage regulation coil and second portion also have been connected in together, the moving contact of M type on load tap changer (being the fast knot point) has formed the star contact, the normally pressure regulation of M type on load tap changer, this moment, coil was that star connects.Promptly realized star/angle conversion.
Beneficial effect of the present invention:
Realized using M type shunting switch when the on-load voltage regulation transformer, in the time of the neutral point fast knot, transformer can be realized star/angle conversion, has solved the problem that voltage transforms, and is equivalent to realize with a transformer function of two transformers.
Description of drawings:
Fig. 1 Y-connection structural principle of the present invention schematic diagram
Fig. 2 dihedral syndeton of the present invention principle schematic
Embodiment:
Referring to Fig. 1, Fig. 2, on-load tap-changing transformer uses M type shunting switch to realize the method for star/angle conversion, realizes by following step:
The basic structure and the connected mode of the star/star/angle conversion coil of M type shunting switch mainly comprise star/star/angle conversion coil, and (span of N tap is five～17 taps to M type on load tap changer, with seven taps is example) and off circuit tap changer, A, B, C is the first head of three-phase high-voltage coil 1, Xk, Yk, Zk is the tail head of three-phase high-voltage coil 1, X7, X6, X5, X4, X3, X2, X1 and X1 ', Y7, Y6, Y5, Y4, Y3, Y2, Y1 and Y1 ', Z7, Z6, Z5, Z4, Z3, Z2, Z1 and Z1 ' are the taps of three phase voltage regulating coil 2; Be provided with off circuit tap changer 3 on the top of three-phase coil, in order to star/angle conversion; The tap of bottom is in order to be connected with each tap of on-load shunting switch; The moving contact of foot is represented the neutral point fast knot point 4 of M type shunting switch; The first head of the first of the second portion tail head of voltage regulation coil and voltage regulation coil is linked respectively on the contact of off circuit tap changer 3; The tail head Xk of high-tension coil 1, Yk, first X7 of Zk and voltage regulation coil 2 second portions, Y7, Z7 links together all the time.
During use, when off circuit tap changer 3 during in 1 tap, the first head of high-tension coil 1 and the X2 of voltage regulation coil 2 second portions, Y2, Z2 link together, constitute angle joint connecting line, the X1-X1 ' of voltage regulation coil 2 firsts, Y1-Y1 ', Z1-Z1 ' coiler part is equivalent to unsettled, and promptly M type shunting switch neutral point (being fast knot point 4) is in vacant state; When off circuit tap changer during in 2 taps, two taps of X1 ' and X2, Y1 ' and Y2, Z1 ' and Z2 are equivalent to be connected together, and the moving contact of M type on load tap changer (being fast knot point 4) has formed the star contact, constitutes star line in succession.Realized that thus M type shunting switch neutral point is under the situation of fast knot, the mutual conversion of star/dihedral connected mode.
Above star angle conversion, when constituting star in succession after the line, transformer belongs to normal linear voltage regulation; After constituting angle joint connecting line, the fast knot point of M type on load tap changer is equivalent to vacant state, and at this moment the contact of loaded switch body and the electric strength between the contact are to need to guarantee.The contact and the electric strength between the contact of Switch main body regulation are 50Hz 1min 20kV, meet the demands.In addition, for voltage regulation coil, X1-X1 ', Y1-Y1 ', the same X2 of Z1-Z1 ' coiler part, Y2, the electric strength between the Z2 is by guaranteeing in the distance that strengthens on the voltage regulation coil between first circle and second circle.No matter so be that switch or voltage regulation coil all can guarantee the electric requirement when coil is in the corner connection state, so the connection of star/dihedral can normally be switched.
Above conversion has solved when on-load voltage regulation transformer use M type switch, neutral point is a fast knot, when the user needs transformer star/dihedral to change, can realize star/angle conversion, a transformer is realized the function of two transformers, can satisfy area, a lot of colliery, and the on-load tap-changing transformer capacity of use is bigger, voltage is low, the demand that change in voltage is frequent.
Claims (2)
1. adopt the application process of M type shunting switch in star/star/angle conversion coil, realize by following step:
(1). star/star/angle conversion coil basic structure: three-phase star/star/angle conversion coil is divided into high-tension coil and voltage regulation coil, described voltage regulation coil is divided into two parts, and first is a tap independently, and second portion is two taps that are linked in sequence, three taps ... the N tap; Top at three-phase star/star/angle conversion coil is provided with off circuit tap changer, is provided with M type on load tap changer in the bottom of three-phase star/star/angle conversion coil;
(2). connected mode: the first head of described high-tension coil is connected on the off circuit tap changer, and the tail head is connected the first head of voltage regulation coil second portion; The first head of the first of the second portion tail head of voltage regulation coil and voltage regulation coil is linked respectively on the contact of off circuit tap changer; The tail head of voltage regulation coil first is connected on the M type on load tap changer;
(3). pressure regulation method: when off circuit tap changer during in 1 tap, M type on load tap changer is also in a tap, at this moment high-tension coil connects together with the second portion of line pressure regulator circle, the first of voltage regulation coil is an off-state, make the fast knot point S of M type on load tap changer be in vacant state, this moment, coil was in the angle joint connecting line mode; When off circuit tap changer during in 2 taps, high-tension coil connects together with the second portion of line pressure regulator circle, the first and the second portion of voltage regulation coil also have been connected in together simultaneously, and the moving contact of M type on load tap changer is that fast knot point has formed the star contact, and this moment, coil was in star line mode in succession; Promptly realize star/angle conversion.
2. the application process of employing M type shunting switch according to claim 1 in star/star/angle conversion coil, it is characterized in that: described N tap is five～17 taps.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100100579A CN101552114B (en) | 2009-01-09 | 2009-01-09 | Application method of tapping switch adopting M type in star/angle conversion coil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100100579A CN101552114B (en) | 2009-01-09 | 2009-01-09 | Application method of tapping switch adopting M type in star/angle conversion coil |
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| CN101552114A CN101552114A (en) | 2009-10-07 |
| CN101552114B true CN101552114B (en) | 2010-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692393B (en) * | 2009-09-11 | 2012-09-05 | 辽宁金立电力电器有限公司 | Switch of loaded-regulating capacity regulating transformer in power grid of 20KV and below |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468043B (en) * | 2011-12-01 | 2014-09-24 | 厦门纳美特新材料科技有限公司 | Load transfer distribution transformer |
| JP6003949B2 (en) * | 2014-06-26 | 2016-10-05 | 株式会社明電舎 | AC electric vehicle power supply equipment |
| CN104404579A (en) * | 2014-12-02 | 2015-03-11 | 南昌航空大学 | Swing device for mechanical roll grinding type acidic copper electroplating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2005189C3 (en) * | 1970-02-05 | 1979-07-26 | Transformatoren Union Ag, 7000 Stuttgart | Three-phase step transformer |
| CN2307343Y (en) * | 1997-07-26 | 1999-02-10 | 峨眉铁合金(集团)股份有限公司 | Energy-saving transformer for electric furnace |
| CN1375841A (en) * | 2002-01-24 | 2002-10-23 | 刘建平 | Curved compensating transformer and its phase-shift voltage regulating method |
-
2009
- 2009-01-09 CN CN2009100100579A patent/CN101552114B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2005189C3 (en) * | 1970-02-05 | 1979-07-26 | Transformatoren Union Ag, 7000 Stuttgart | Three-phase step transformer |
| CN2307343Y (en) * | 1997-07-26 | 1999-02-10 | 峨眉铁合金(集团)股份有限公司 | Energy-saving transformer for electric furnace |
| CN1375841A (en) * | 2002-01-24 | 2002-10-23 | 刘建平 | Curved compensating transformer and its phase-shift voltage regulating method |
Non-Patent Citations (1)
| Title |
|---|
| JP平1-278005A 1989.11.08 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692393B (en) * | 2009-09-11 | 2012-09-05 | 辽宁金立电力电器有限公司 | Switch of loaded-regulating capacity regulating transformer in power grid of 20KV and below |
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| CN101552114A (en) | 2009-10-07 |
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