JPH0563006B2 - - Google Patents
Info
- Publication number
- JPH0563006B2 JPH0563006B2 JP8575187A JP8575187A JPH0563006B2 JP H0563006 B2 JPH0563006 B2 JP H0563006B2 JP 8575187 A JP8575187 A JP 8575187A JP 8575187 A JP8575187 A JP 8575187A JP H0563006 B2 JPH0563006 B2 JP H0563006B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- tap
- high voltage
- voltage winding
- neutral point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims description 125
- 230000007935 neutral effect Effects 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 230000005284 excitation Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は特にタツプによるインピーダンスの変
化を少なくするようにしたタツプ付変圧器に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention particularly relates to a transformer with taps that reduces changes in impedance due to taps.
（従来の技術）
一般に輸送重量制限の厳しい場所に設置される
変圧器は、輸送重量を低減するために各相毎に分
割して輸送される。またさらにその巻線構成とし
ては重量を低減する必要がある場合に高圧巻線を
二分割して低圧巻線の内外に配置する、いわゆる
二重同心巻線配置構成を採用する等の工夫がなさ
れている。(Prior Art) Generally, transformers installed in places with strict transport weight restrictions are transported by dividing each phase into parts in order to reduce the transport weight. Furthermore, when it is necessary to reduce the weight of the winding structure, the high-voltage winding is divided into two parts and arranged inside and outside the low-voltage winding, which is a so-called double concentric winding arrangement. ing.
第７図はこのような変圧器の構成例を示してい
るが、単相三脚鉄心の主脚１に鉄心側より順次三
次巻線１４、高圧中性点側巻線１２、低圧巻線１
３、線路端側高圧巻線１１及びタツプ巻線１７を
同心状に配置し、線路端側高圧巻線１１と中性点
高圧巻線１２を直列接続すると共に、タツプ巻線
１７を中性点側高圧巻線１２の中性点側に直列接
続して構成した３巻線変圧器である。そしてタツ
プ巻線１７の各タツプはタツプ切換器（図示せ
ず）に接続され、タツプ切換器の操作により、高
圧巻線の巻回数が調整され高圧巻線の電圧切換が
できるようになつている。 FIG. 7 shows an example of the configuration of such a transformer, in which a tertiary winding 14, a high voltage neutral point side winding 12, and a low voltage winding 1 are installed in the main leg 1 of a single-phase three-leg iron core in order from the iron core side.
3. The line end side high voltage winding 11 and the tap winding 17 are arranged concentrically, the line end side high voltage winding 11 and the neutral point high voltage winding 12 are connected in series, and the tap winding 17 is connected to the neutral point. This is a three-winding transformer configured by connecting the side high-voltage winding 12 in series to the neutral point side. Each tap of the tap winding 17 is connected to a tap changer (not shown), and by operating the tap changer, the number of turns of the high voltage winding is adjusted and the voltage of the high voltage winding can be changed. .
（発明が解決しようとする問題点）
以上の構成とすると、高圧巻線１１，１２が二
分割され、低圧巻線１３の内外に配置されている
ため、短絡比の小さい銅機械となり、輸送重量は
低減されるが、以下の欠点がある。すなわち、タ
ツプ巻線１７の巻回数を調整すると、高・低圧巻
線間の磁束密度が第８図の例（タツプ切換方式を
極性切換とした例）の様に大幅に変化する。従つ
て高・低圧巻線間のインピーダンス（磁束密度Ｂ
の二乗体積積分∫B2dvに比例）もタツプ位置によ
り大幅に変化してしまい、送電系統の運用上で問
題となるケースが生ずる。(Problems to be Solved by the Invention) With the above configuration, the high-voltage windings 11 and 12 are divided into two parts and placed inside and outside the low-voltage winding 13, resulting in a copper machine with a small short-circuit ratio, and the transport weight is reduced, but it has the following drawbacks. That is, when the number of turns of the tap winding 17 is adjusted, the magnetic flux density between the high and low voltage windings changes significantly as shown in the example of FIG. 8 (an example where the tap switching system is polarity switching). Therefore, the impedance between the high and low voltage windings (magnetic flux density B
(proportional to the square volume integral ∫B 2 dv) also changes significantly depending on the tap position, causing problems in the operation of the power transmission system.
本発明の目的は、輸送重量を従来例並に少なく
したまま、かつタツプ位置によるインピーダンス
の変化が少ないタツプ付変圧器を提供することに
ある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a transformer with taps whose transportation weight is reduced to the same level as conventional examples, and whose impedance changes little depending on the tap position.
［発明の構成］
（問題点を解決するための手段および作用）
本発明のタツプ付変圧器は、高圧巻線を分割し
て低圧巻線の内外に配置するいわゆる二重同心巻
線配置構成で、その外側三次巻線と内側三次巻線
との巻線比を線路端側高圧巻線と中性点側高圧巻
線との巻線比にほぼ合せたことを特徴とするもの
である。[Structure of the Invention] (Means and Effects for Solving Problems) The tap transformer of the present invention has a so-called double concentric winding arrangement in which the high voltage winding is divided and placed inside and outside the low voltage winding. , the winding ratio between the outer tertiary winding and the inner tertiary winding is approximately equal to the winding ratio between the line end side high voltage winding and the neutral point side high voltage winding.
本発明においては、二重同心巻線配置構成の特
有の輸送重量低減効果を保持したまま、タツプ位
置によるインピーダンス変化を少なくすることが
できる。 In the present invention, it is possible to reduce the impedance change depending on the tap position while maintaining the transport weight reduction effect peculiar to the double concentric winding arrangement.
（実施例）
以下本発明の実施例を第１図により説明する。
第１図は単相三脚鉄心の主脚１に鉄心側より順次
内側三次巻線１５、中性点側高圧巻線１２、低圧
巻線１３、線路端側高圧巻線１１及び外側三次巻
線１４を同心状に配置し、一方同一鉄心の一方の
側脚２には鉄心側より順次励磁巻線１６、タツプ
巻線１７を配置した構成である。(Example) An example of the present invention will be described below with reference to FIG.
Figure 1 shows the main leg 1 of a single-phase tripod core in order from the core side: inner tertiary winding 15, neutral point side high voltage winding 12, low voltage winding 13, line end side high voltage winding 11, and outer tertiary winding 14. are arranged concentrically, and on one side leg 2 of the same core, an excitation winding 16 and a tap winding 17 are arranged sequentially from the core side.
ここで、線路端側高圧巻線１１と、中性点側高
圧巻線１２とは直列接続すると共に、タツプ巻線
１７は中性点側高圧巻線１２の中性点側に直列接
続されている。また内側三次巻線１５と外側三次
巻線１４も直列接続されるとともに、励磁巻線１
６に並列接続されている。 Here, the line end side high voltage winding 11 and the neutral point side high voltage winding 12 are connected in series, and the tap winding 17 is connected in series to the neutral point side of the neutral point side high voltage winding 12. There is. Further, the inner tertiary winding 15 and the outer tertiary winding 14 are also connected in series, and the excitation winding 1
6 are connected in parallel.
一方、外側三次巻線１４と内側三次巻線１５の
巻数比は線路端側高圧巻線１１と中性点側高圧巻
線１２の巻数比にほぼ合せられている。 On the other hand, the turn ratio of the outer tertiary winding 14 and the inner tertiary winding 15 is approximately matched to the turn ratio of the line end side high voltage winding 11 and the neutral point side high voltage winding 12.
次にこのように構成された本発明のタツプ付変
圧器の作用を説明する。内外三次巻線１５，１４
の巻数比と中性点側、線路端側高圧巻線１２，１
１の巻数比がほぼ等しいことから、タツプ位置を
変化させても線路端側高圧巻線１１のアンペアタ
ーン（電流×巻回数）と外側三次巻線１４のアン
ペアターンの和はほぼ一定となる。従つて、第２
図に示すように、低圧巻線１３内外のギヤツプの
磁束密度は、タツプ位置によらずほぼ一定になる
事から、高低圧巻線間のインピーダンス（磁束密
度Ｂの二乗体積積分∫B2dvに比例）はタツプ位置
によらずほぼ一定になる。 Next, the operation of the tap transformer of the present invention constructed as described above will be explained. Inner and outer tertiary windings 15, 14
The turns ratio of the neutral point side, line end side high voltage winding 12,1
Since the turns ratio of 1 is almost the same, even if the tap position is changed, the sum of the ampere turns (current x number of turns) of the line end side high voltage winding 11 and the ampere turns of the outer tertiary winding 14 remains almost constant. Therefore, the second
As shown in the figure, since the magnetic flux density of the gap inside and outside the low voltage winding 13 is almost constant regardless of the tap position, the impedance between the high and low voltage windings (proportional to the square volume integral of the magnetic flux density B ∫B 2 dv) ) remains almost constant regardless of the tap position.
以上の説明は側脚に鉄心側より励磁巻線、タツ
プ巻線の順に配置する例で説明したが、この配置
を逆にしても同様の効果が得られる事は明白であ
る。またタツプの切換方式は極性切断方式で説明
したが、転移切換方式としても同様の効果があ
る。 The above explanation has been given using an example in which the excitation winding and the tap winding are arranged in this order from the iron core side on the side leg, but it is clear that the same effect can be obtained even if this arrangement is reversed. Further, although the tap switching method has been described using the polarity cutting method, the same effect can be obtained by using the transition switching method.
次に第３図に示す他の実施例においては、単相
三脚鉄心の主脚１に鉄心側より順次内側三次巻線
１５、中性点側高圧巻線１２、低圧巻線１３、線
路端側高圧巻線１１および外側三次巻線１４を同
心状に配置して主変圧器２１を構成したものであ
り、この主変圧器２１の単相三脚鉄心と異なる別
の単相三脚鉄心の主脚２又は単相二脚鉄心の一方
の主脚２に鉄心側より順次励磁巻線１６、タツプ
巻線１７を配置して電圧調整器２２を構成したも
のである。なお主変圧器２１および電圧調整器２
２の各巻線の相互結線は第１図の実施例と同一で
あり、その磁束密度分布も第２図と同一になるこ
とからその説明を省略する。 Next, in another embodiment shown in FIG. 3, the main leg 1 of the single-phase three-legged iron core has an inner tertiary winding 15, a high-voltage winding 12 on the neutral point side, a low-voltage winding 13 on the line end side, in order from the iron core side. A main transformer 21 is constructed by arranging a high voltage winding 11 and an outer tertiary winding 14 concentrically, and a main leg 2 of a different single-phase tripod core different from the single-phase tripod core of this main transformer 21. Alternatively, the voltage regulator 22 is constructed by sequentially arranging the excitation winding 16 and the tap winding 17 on one main leg 2 of a single-phase two-leg iron core from the core side. Note that the main transformer 21 and voltage regulator 2
The mutual connections of the respective windings of No. 2 are the same as in the embodiment shown in FIG. 1, and the magnetic flux density distribution is also the same as in FIG. 2, so a description thereof will be omitted.
また第４図、第５図および第６図は、第３図の
実施例における主変圧器２１と電圧調整器２２と
のそれぞれ異なる組合せ構成を示すものである。
第４図は本発明の実施例である第３図の巻線構成
を用いて、３相１バンクを構成する際の概念図で
ある。主変圧器単相鉄心２５の主脚には、内側三
次巻線１５、中性点側高圧巻線１２、低圧巻線１
３、線路端側高圧巻線１１および外側三次巻線１
４から構成される主巻線群２３が配置され、電圧
調整器単相鉄心２６の主脚には、励磁巻線１６、
タツプ巻線１７から構成されるタツプ巻線群２４
が配置されている。３相バンクを構成するために
は単相主変圧器及び単相電圧調整器をそれぞれ３
台必要とし、各相で夫々１台づつを単相接続する
ことになる。 4, 5, and 6 show different combinations of the main transformer 21 and voltage regulator 22 in the embodiment of FIG. 3, respectively.
FIG. 4 is a conceptual diagram when configuring a three-phase one bank using the winding configuration shown in FIG. 3, which is an embodiment of the present invention. The main legs of the main transformer single-phase core 25 include an inner tertiary winding 15, a high voltage winding 12 on the neutral point side, and a low voltage winding 1.
3. Line end side high voltage winding 11 and outer tertiary winding 1
A main winding group 23 consisting of 4 is arranged, and the main leg of the voltage regulator single-phase core 26 includes an excitation winding 16,
Tap winding group 24 composed of tap windings 17
is located. To configure a three-phase bank, three single-phase main transformers and three single-phase voltage regulators are required.
One unit is required for each phase, and one unit is connected in a single phase.
第５図および第６図は本発明のさらに異なる他
の実施例である。第５図および第６図は第４図の
本発明の実施例において、３相１バンクの構成方
法を変形したものである。 FIGS. 5 and 6 show still other different embodiments of the present invention. FIGS. 5 and 6 show a modification of the three-phase, one-bank configuration method in the embodiment of the present invention shown in FIG. 4.
第５図は主変圧器単相鉄心２５に主巻線群２３
を配置した単相主変圧器３台と、電圧調整器三相
鉄心２８にタツプ巻線群２４を３相分配置した三
相電圧調整器１台を用いて３相１バンクを構成す
る例である。 Figure 5 shows the main winding group 23 on the main transformer single-phase core 25.
This is an example in which one three-phase bank is configured using three single-phase main transformers in which three phases are arranged, and one three-phase voltage regulator in which tap winding groups 24 are arranged for three phases on the voltage regulator three-phase iron core 28. be.
また第６図は主変圧器と電圧調整器ともに３相
構成としたものであり、三相主変圧器及び三相電
圧調整器１台づつを用いて３相１バンクを構成し
ている。 Further, in FIG. 6, both the main transformer and the voltage regulator have a three-phase configuration, and one three-phase main transformer and one three-phase voltage regulator are used to constitute one three-phase bank.
これらの３相１バンクの構成方法については、
輸送条件及び現地えの据付スペース条件を検討
し、適宜選択することが可能である。 For information on how to configure these three-phase one bank,
It is possible to consider transportation conditions and on-site installation space conditions and select the appropriate one.
［発明の効果］
以上のように本発明においては、高圧巻線を分
割して低圧巻線の内外に配置するいわゆる二重同
心巻線配置構成で、その外側三次巻線と内側三次
巻線との巻数比を線路端側高圧巻線と中性点側高
圧巻線との巻数比にほぼ合せたことにより、二重
同心巻線配置構成特有の輸送重量低減効果を保持
したまま、タツプ位置によるインピーダンス変化
の少なくなるなどの利点を有する。[Effects of the Invention] As described above, the present invention employs a so-called double concentric winding arrangement in which the high voltage winding is divided and placed inside and outside the low voltage winding, and the outer tertiary winding and the inner tertiary winding are separated. By nearly matching the turns ratio of the high-voltage winding on the line end side to the high-voltage winding on the neutral point side, the transport weight reduction effect unique to the double concentric winding configuration is maintained, while the tap position It has advantages such as less change in impedance.
第１図は本発明のタツプ付変圧器の巻線配置構
成を示す結線図、第２図は本発明における巻線の
各タツプ位置での磁束密度分布を示す特性図、第
３図は本発明の他の実施例を示す結線図、第４
図、第５図及び第６図は本発明における主変圧器
と電圧調整器との組合せのそれぞれ異なる実施例
を示す概念図、第７図は従来のタツプ付変圧器の
巻線配置構成を示す結線図、第８図はその磁束密
度分布図である。
１……鉄心主脚、２……鉄心側脚、１１……線
路端側高圧巻線、１２……中性点側高圧巻線、１
３……低圧巻線、１４……外側三次巻線、１５…
…内側三次巻線、１６……励磁巻線、１７……タ
ツプ巻線、２１……主変圧器、２２……電圧調整
器、２３……主巻線群、２４……タツプ巻線群。
FIG. 1 is a wiring diagram showing the winding arrangement of a transformer with taps according to the present invention, FIG. 2 is a characteristic diagram showing the magnetic flux density distribution at each tap position of the winding according to the present invention, and FIG. 3 is a diagram showing the magnetic flux density distribution at each tap position of the winding according to the present invention. 4th wiring diagram showing another embodiment of
5 and 6 are conceptual diagrams showing different embodiments of the combination of a main transformer and a voltage regulator according to the present invention, and FIG. 7 shows a winding arrangement configuration of a conventional tap transformer. The wiring diagram and FIG. 8 are the magnetic flux density distribution diagrams. 1...Iron core main leg, 2...Iron core side leg, 11...Line end side high voltage winding, 12...Neutral point side high voltage winding, 1
3...Low voltage winding, 14...Outer tertiary winding, 15...
...Inner tertiary winding, 16...Excitation winding, 17...Tap winding, 21...Main transformer, 22...Voltage regulator, 23...Main winding group, 24...Tap winding group.
Claims (1)
次巻線、中性点側高圧巻線、低圧巻線、線路端側
高圧巻線および外側三次巻線を同心状に配置し、
一方の側脚には励磁巻線、タツプ巻線を配置し、
線路端側高圧巻線と中性点側高圧巻線を直列接続
すると共に、その中性点側高圧巻線の中性点側を
タツプ巻線に直列接続し、かつ、外側三次巻線と
内側三次巻線を直列接続したものに励磁巻線を並
列接続した巻線配置及び結線の構成において、外
側三次巻線と、内側三次巻線の巻数比を、線路端
側高圧巻線と中性点側高圧巻線の巻数比にほぼ合
せたことを特徴とするタツプ付変圧器。 ２ 励磁巻線およびタツプ巻線を内外側三次巻
線、中性点側高圧巻線、低圧巻線および線路端側
高圧巻線が巻かれた主変圧器の単相三脚鉄心と異
なる別の単相三脚鉄心の主脚または単相二脚鉄心
の一方の主脚に巻いたことを特徴とする特許請求
の範囲第１項記載のタツプ付変圧器。[Scope of Claims] 1. On the main legs of a single-phase tripod iron core, an inner tertiary winding, a high voltage winding on the neutral point side, a low voltage winding, a high voltage winding on the line end side, and an outer tertiary winding are arranged concentrically in order from the iron core side. Place it in
An excitation winding and a tap winding are arranged on one side leg,
The line end side high voltage winding and the neutral point side high voltage winding are connected in series, and the neutral point side of the neutral point side high voltage winding is connected in series to the tap winding, and the outer tertiary winding and the inner side high voltage winding are connected in series. In the winding arrangement and connection configuration in which the tertiary winding is connected in series and the excitation winding is connected in parallel, the turn ratio of the outer tertiary winding and the inner tertiary winding is set to the high voltage winding on the line end side and the neutral point. A transformer with a tap that is characterized by a turn ratio approximately matching that of the side high voltage winding. 2. The excitation winding and the tap winding are installed in a separate unit different from the single-phase tripod core of the main transformer, around which the inner and outer tertiary windings, the high-voltage winding on the neutral point side, the low-voltage winding, and the high-voltage winding on the line end side are wound. A transformer with a tap according to claim 1, characterized in that the tap is wound around one main leg of a three-phase three-leg iron core or one of the main legs of a single-phase two-leg iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8575187A JPS63252410A (en) | 1987-04-09 | 1987-04-09 | Transformer with tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8575187A JPS63252410A (en) | 1987-04-09 | 1987-04-09 | Transformer with tap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63252410A JPS63252410A (en) | 1988-10-19 |
| JPH0563006B2 true JPH0563006B2 (en) | 1993-09-09 |
Family
ID=13867557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8575187A Granted JPS63252410A (en) | 1987-04-09 | 1987-04-09 | Transformer with tap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63252410A (en) |
-
1987
- 1987-04-09 JP JP8575187A patent/JPS63252410A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63252410A (en) | 1988-10-19 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |