JPH0644538B2 - Autotransformer - Google Patents
AutotransformerInfo
- Publication number
- JPH0644538B2 JPH0644538B2 JP61122332A JP12233286A JPH0644538B2 JP H0644538 B2 JPH0644538 B2 JP H0644538B2 JP 61122332 A JP61122332 A JP 61122332A JP 12233286 A JP12233286 A JP 12233286A JP H0644538 B2 JPH0644538 B2 JP H0644538B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- tertiary
- shunt
- impedance
- autotransformer
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 11
- 230000004907 flux Effects 0.000 description 11
- 230000007935 neutral effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は単巻変圧器に係り、特に一次と二次間のインピ
ーダンスを高くした場合に好適な単巻変圧器に関する。Description: TECHNICAL FIELD The present invention relates to an autotransformer, and particularly to an autotransformer suitable when the impedance between the primary and secondary is increased.
従来の内鉄形単巻変圧器は、電圧や構造上の条件から、
特開昭54-43526号公報および特開昭55-13914号公報に示
されるように各巻線を配置している。つまり第３図に示
すように、一番電圧の低い三次巻線２を最内径の鉄心１
側に配置し、それから分路巻線３、直列巻線４の順に配
置していた。従って、一次と二次間のインピーダンスは
対応する洩れ磁束分布30の如き特性となり、二次と三次
間のインピーダンスは対応する洩れ磁束分布40の如き特
性となる。The conventional inner iron type autotransformer is
The windings are arranged as shown in JP-A-54-43526 and JP-A-55-13914. That is, as shown in FIG. 3, the tertiary winding 2 having the lowest voltage is connected to the iron core 1 having the innermost diameter.
, The shunt winding 3, and the series winding 4 in this order. Therefore, the impedance between the primary and the secondary has a characteristic such as the corresponding leakage magnetic flux distribution 30, and the impedance between the secondary and the third has a characteristic such as the corresponding leakage magnetic flux distribution 40.
従来の単巻変圧器は上述の如き構成であったため、系統
運用上、一次と二次間のインピーダンスを高くする場
合、その値に比例して二次と三次間のインピーダンスも
大きくなり、その結果、三次の電圧変動率が大きくくな
って調相設備の容量に大きな影響を与えるという欠点が
あった。Since the conventional autotransformer had the above-mentioned configuration, when increasing the impedance between the primary and the secondary in system operation, the impedance between the secondary and the tertiary also increases in proportion to the value, and as a result, However, there is a drawback that the third-order voltage fluctuation rate becomes large and the capacity of the phase-modulating equipment is greatly affected.
本発明の目的は、二次と三次間のインピーダンスを大き
くすることなく、一次と二次間のインピーダンスを大き
くすることができる単巻変圧器を提供するにある。An object of the present invention is to provide an autotransformer capable of increasing the impedance between the primary and the secondary without increasing the impedance between the secondary and the tertiary.
本発明は上記目的を達成するために、分路巻線を２分割
し、その中性点側を三次巻線の内側に配置し、またその
二次線路側を三次巻線の外側に配置して、分割した分路
巻線間に三次巻線を挟み込んだことを特徴とする。In order to achieve the above object, the present invention divides the shunt winding into two parts, and arranges the neutral point side inside the tertiary winding and the secondary line side outside the tertiary winding. The third winding is sandwiched between the divided shunt windings.
本発明は上述の如く、分割した分路巻線間に三次巻線を
挟み込むようにしたため、両巻線間のインピーダンスを
下げることができ、従って、一次と二次間のインピーダ
ンスを大きくしても、二次と三次間のインピーダンスを
従来のように大きくすることがない。According to the present invention, as described above, since the tertiary winding is sandwiched between the divided shunt windings, the impedance between the windings can be lowered, and therefore even if the impedance between the primary and the secondary is increased. , There is no need to increase the impedance between the secondary and the tertiary as in the conventional case.
以下本発明の実施例を図面によって説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は巻線配置と洩れ磁束分布を示しており、第２図
は巻線の結線図を示している。FIG. 1 shows the winding arrangement and leakage magnetic flux distribution, and FIG. 2 shows the wiring connection diagram.
第２図に示すように、分路巻線は中性点側の分路巻線３
ａと二次線路側の分路巻線３ｂとに分割され、これら分
路巻線３ａ，３ｂは直列に接続されている。各巻線の配
置は第１図に示す通りであり、最内径側の鉄心１から、
中性点側の分路巻線三ａ、三次巻線２、二次線路側の分
路巻線３ｂ、そして直列巻線４の順に配置している。As shown in FIG. 2, the shunt winding is the shunt winding 3 on the neutral point side.
a and a shunt winding 3b on the secondary line side, and these shunt windings 3a and 3b are connected in series. The arrangement of each winding is as shown in FIG. 1, and from the iron core 1 on the innermost diameter side,
The shunt winding 3a on the neutral point side, the tertiary winding 2, the shunt winding 3b on the secondary line side, and the series winding 4 are arranged in this order.
第１図は漏洩インピーダンスの大小を示す洩れ磁束分布
も示しており、一次と二次間のインピーダンスに対応す
る洩れ磁束分布10と、二次と三次間のインピーダンスに
対応する洩れ磁束分布20とは図示の如くとなる。第３図
の従来例との比較から分かるように、一次と二次間の洩
れ磁束分布10と洩れ磁束分布30がほぼ同一となるように
製作した場合、つまり一次と二次間のインピーダンスが
ほぼ等しくなるよう製作した場合、二次と三次間の洩れ
磁束分布20は、従来の同洩れ磁束分布40よりも小さくな
る。従って、二次と三次間の洩れ磁束分布20，40に対応
するインピーダンスをほぼ同じにすることを考えると、
その分だけ一次と二次間のインピーダンスを大きくした
単巻変圧器が得られる。中性点側の分路巻線３ａを分路
巻線全体の20〜30％、つまり二次線路の電圧を275ＫＶ
とすると55〜82.5ＫＶとすることにより、鉄心１の大地
電位（０Ｖ＝中性点電位）との差を、従来の三次巻線と
同等の電位差にできる。Fig. 1 also shows the leakage flux distribution showing the magnitude of the leakage impedance. The leakage flux distribution 10 corresponding to the impedance between the primary and the secondary and the leakage flux distribution 20 corresponding to the impedance between the secondary and the tertiary are shown. As shown in the figure. As can be seen from the comparison with the conventional example shown in FIG. 3, when the leakage magnetic flux distribution 10 and the leakage magnetic flux distribution 30 between the primary and the secondary are made to be almost the same, that is, the impedance between the primary and the secondary is almost the same. When manufactured so as to be equal, the leakage flux distribution 20 between the secondary and the tertiary becomes smaller than the conventional leakage flux distribution 40. Therefore, considering that the impedances corresponding to the leakage magnetic flux distributions 20 and 40 between the secondary and tertiary are approximately the same,
An autotransformer in which the impedance between the primary and secondary is increased by that amount can be obtained. The shunt winding 3a on the neutral point side is 20 to 30% of the whole shunt winding, that is, the voltage of the secondary line is 275 KV.
Then, by setting the voltage to 55 to 82.5 KV, the difference from the ground potential (0 V = neutral point potential) of the iron core 1 can be made equal to that of the conventional tertiary winding.
以上説明したように本発明は、２分割した分路巻線間に
三次巻線を挟み込んだため、一次と二次間のインピーダ
ンスを大きくしても、二次と三次間のインピーダンスを
従来のように大きくせず、その結果、三次電圧の変動率
を小さく抑えて、三次巻線に接続される調相設備の有効
活用をはかることができる。As described above, according to the present invention, since the tertiary winding is sandwiched between the shunt windings divided into two, even if the impedance between the primary and the secondary is increased, the impedance between the secondary and the tertiary is different from the conventional one. As a result, the fluctuation rate of the tertiary voltage can be suppressed to a small value, and the phase-adjusting equipment connected to the tertiary winding can be effectively used.
第１図は本発明の一実施例による単巻変圧器の巻線配置
図、第２図は第１図の巻線の結線図、第３図は従来の単
巻変圧器の巻線配置図である。 １……鉄心、２……三次巻線、３ａ，３ｂ……分路巻
線、４……直列巻線。FIG. 1 is a winding layout of an autotransformer according to an embodiment of the present invention, FIG. 2 is a wiring connection diagram of the winding of FIG. 1, and FIG. 3 is a layout of windings of a conventional autotransformer. Is. 1 ... Iron core, 2 ... Tertiary winding, 3a, 3b ... Shunt winding, 4 ... Series winding.
Claims (1)
る内鉄形の単巻変圧器において、上記分路巻線を直列に
２分割し、鉄心側から順次、上記分割した中性点側の分
路巻線、上記三次巻線、上記分割した二次線路側の分割
巻線、上記直列巻線を配置して分割した分路巻線間に三
次巻線を挟み込んだことを特徴とする単巻変圧器。1. In an inner iron type autotransformer having a tertiary winding, a shunt winding and a series winding, the shunt winding is divided into two in series, and the division is performed sequentially from the iron core side. The tertiary winding is sandwiched between the shunt winding on the sex side, the tertiary winding, the split winding on the divided secondary line side, and the shunt winding divided by arranging the series winding. A characteristic autotransformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61122332A JPH0644538B2 (en) | 1986-05-29 | 1986-05-29 | Autotransformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61122332A JPH0644538B2 (en) | 1986-05-29 | 1986-05-29 | Autotransformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62281312A JPS62281312A (en) | 1987-12-07 |
| JPH0644538B2 true JPH0644538B2 (en) | 1994-06-08 |
Family
ID=14833347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61122332A Expired - Lifetime JPH0644538B2 (en) | 1986-05-29 | 1986-05-29 | Autotransformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644538B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3664108B1 (en) * | 2018-03-19 | 2021-11-10 | Fuji Electric Co., Ltd. | Static induction electric appartus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5443526A (en) * | 1977-09-13 | 1979-04-06 | Toshiba Corp | Autotransformer |
| JPS5513914A (en) * | 1978-07-17 | 1980-01-31 | Toshiba Corp | Autotransformer |
| JPS5850011A (en) * | 1981-09-21 | 1983-03-24 | Furuhata Sakae | Method and device for controlling liquid level |
-
1986
- 1986-05-29 JP JP61122332A patent/JPH0644538B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62281312A (en) | 1987-12-07 |
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