JPS62181Y2 - - Google Patents
Info
- Publication number
- JPS62181Y2 JPS62181Y2 JP18329479U JP18329479U JPS62181Y2 JP S62181 Y2 JPS62181 Y2 JP S62181Y2 JP 18329479 U JP18329479 U JP 18329479U JP 18329479 U JP18329479 U JP 18329479U JP S62181 Y2 JPS62181 Y2 JP S62181Y2
- Authority
- JP
- Japan
- Prior art keywords
- tap switching
- magnetic shielding
- switching device
- shielding device
- tap
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Description
【考案の詳細な説明】
本考案は大容量変圧器のケース内部のように、
漏洩磁束が存在する場所に複数台並設されて並列
運転されるタツプ切換装置の磁気遮蔽装置に関す
るものである。[Detailed explanation of the invention] This invention is designed to
This invention relates to a magnetic shielding device for a tap switching device that is installed in parallel and operated in parallel in a place where leakage magnetic flux exists.
大容量変圧器においては、２台の無負荷タツプ
切換装置をケース内部に縦積みして配置し、２台
の無負荷タツプ切換装置を相互に並列接続するこ
とにより並列運転することが行なわれている。こ
のような場合、大容量変圧器からの漏洩磁束が、
２台の無負荷タツプ切換装置相互間を接続するリ
ード線が囲む領域を通るため、該リード線により
形成される閉回路に循環電流が流れるのを避けら
れなかつた。例えば、第１図に示すように上下２
台の無負荷タツプ切換装置及びをリード線l1
及びl2で接続して並列運転する場合、リード線
l1，l2と上下のタツプ切換装置の可動電極m1，m2
とによつて形成される閉回路により囲まれる領域
（図に斜線を施して示した領域）を漏洩磁束が通
るため、この閉回路に循環電流Icが流れる。一方
変圧器のタツプＴからタツプ切換装置に流入する
負荷電流Ioはリード線l1、可動電極m1及びリード
線l2の枝路と可動電極m2の枝路とに分流する。し
たがつて上方の無負荷タツプ切換装置では負荷電
流Io1と循環電流Icとが相殺し、下方の無負荷タ
ツプ切換装置では負荷電流Io2に循環電流Icが重
畳する。そのため上方の無負荷タツプ切換装置の
電流値は過大となり、下方の無負荷タツプ切換装
置の電流値は過小となつて満足な並列運転を行な
うことができない欠点があつた。 In large-capacity transformers, parallel operation is performed by arranging two no-load tap-changing devices vertically stacked inside the case and connecting the two no-load tap-changing devices in parallel with each other. There is. In such a case, the leakage magnetic flux from the large capacity transformer is
Since the lead wires connecting the two no-load tap changers pass through the surrounding area, it was unavoidable that a circulating current would flow in the closed circuit formed by the lead wires. For example, as shown in Figure 1,
No-load tap changer and lead wire L 1
When connecting with and l 2 for parallel operation, the lead wire
l 1 , l 2 and movable electrodes m 1 , m 2 of the upper and lower tap switching devices
Since the leakage magnetic flux passes through the area surrounded by the closed circuit formed by (the area indicated by diagonal lines in the figure), the circulating current Ic flows through this closed circuit. On the other hand, the load current Io flowing into the tap switching device from the tap T of the transformer is divided into a branch of the lead wire l 1 , the movable electrode m 1 and the lead wire l 2 and a branch of the movable electrode m 2 . Therefore, in the upper no-load tap changer, the load current Io 1 and the circulating current Ic cancel each other out, and in the lower no-load tap changer, the circulating current Ic is superimposed on the load current Io 2 . Therefore, the current value of the upper no-load tap changer becomes excessive, and the current value of the lower no-load tap changer becomes too small, resulting in the disadvantage that satisfactory parallel operation cannot be performed.
本考案の目的は、並列運転される複数台のタツ
プ切換装置に漏洩磁束が到達するのを防止して循
環電流を抑制し、並列運転の効果を高めるタツプ
切換装置の磁気遮蔽装置を提供することにある。 The purpose of the present invention is to provide a magnetic shielding device for tap switching devices that prevents leakage magnetic flux from reaching multiple tap switching devices operated in parallel, suppresses circulating current, and enhances the effect of parallel operation. It is in.
以下図示の実施例により本考案の装置を詳細に
説明する。 The apparatus of the present invention will be explained in detail below with reference to the illustrated embodiments.
第２図及び第３図は本考案に係る磁気遮蔽装置
を取付けた無負荷タツプ切換装置を示したもの
で、これらの図において及びはそれぞれ上下
に積み重ねて配置された無負荷タツプ切換装置で
ある。各タツプ切換装置は、絶縁材からなる円筒
状のフレーム１と、フレーム１の軸線方向に間隔
をあけて配置されてフレーム１の周壁を貫通して
取付けられた固定電極２Ａ，２Ｂ及び２Ｃと、こ
れらの固定電極２Ａ，２Ｂ及び２Ｃにそれぞれ対
向するように配置されて同じくフレーム１の周壁
を貫通して取付けられた固定電極２A′，２B′及
び２C′と、フレーム１内を軸線方向に移動し得
るように設けられて対向する各２つの固定電極に
跨る位置で両固定電極に接触する可動電極３とを
備えてなり、タツプ切換装置及びの可動電極
は、両タツプ切換装置のフレームの軸心部に配置
された共通駆動部４に取付けられている。共通駆
動部４の下端付近にはラツクギア５が刻設され、
このラツクギア５にはピニオンギア６が噛み合わ
されている。ピニオンギア６の回転軸７の一端
は、このタツプ切換装置が収納されている変圧器
ケース８の側壁を液密且つ回転自在に貫通してケ
ース８の外部に突出し、他端はケース８内に固設
された支持部材９に軸承されている。回転軸７の
ケース８外に突出した端部には手動操作ハンドル
１０を取付けてあり、このハンドル１０を回動さ
せて共通駆動軸４を上下動させることにより可動
電極３，３を上下に変位させて所定の固定電極間
を接続するようになつている。上下のタツプ切換
装置及びの対応する固定電極２Ａ，２Ａ同
志、２Ｂ，２Ｂ同志及び２Ｃ，２Ｃ同志がそれぞ
れリード線１１，１２及び１３により接続され、
このようにして相互に接続されたタツプ切換装置
，の固定電極２Ａ，２Ｂ及び２Ｃはそれぞれ
図示しない変圧器本体のタツプ巻線から引出され
たタツプT1，T2及びT3に接続されている。また
上下のタツプ切換装置及びの固定電極２
A′，２A′同志、２B′，２B′同志、及び２C′，２
C′同志はそれぞれリード線１１′，１２′及び１
３′により接続されている。 Figures 2 and 3 show a no-load tap changer equipped with a magnetic shielding device according to the present invention, and in these figures, and represent the no-load tap changers stacked one above the other, respectively. . Each tap switching device includes a cylindrical frame 1 made of an insulating material, fixed electrodes 2A, 2B, and 2C arranged at intervals in the axial direction of the frame 1 and attached to the peripheral wall of the frame 1. Fixed electrodes 2A', 2B' and 2C' are arranged to face these fixed electrodes 2A, 2B and 2C, respectively, and are also attached through the peripheral wall of the frame 1, and are moved in the axial direction within the frame 1. and a movable electrode 3 that contacts both fixed electrodes at a position straddling each of the two opposing fixed electrodes. It is attached to a common drive part 4 located at the core. A rack gear 5 is carved near the lower end of the common drive section 4.
A pinion gear 6 is meshed with this rack gear 5. One end of the rotating shaft 7 of the pinion gear 6 penetrates the side wall of the transformer case 8 in which the tap switching device is housed in a fluid-tight and rotatable manner and protrudes to the outside of the case 8, and the other end is inserted into the case 8. It is rotatably supported by a fixed support member 9. A manual operation handle 10 is attached to the end of the rotating shaft 7 that protrudes outside the case 8, and by rotating this handle 10 and moving the common drive shaft 4 up and down, the movable electrodes 3, 3 are vertically displaced. The fixed electrodes are connected to each other by connecting predetermined fixed electrodes. The upper and lower tap switching devices and the corresponding fixed electrodes 2A, 2A, 2B, 2B, and 2C, 2C are connected by lead wires 11, 12, and 13, respectively,
The fixed electrodes 2A, 2B, and 2C of the tap switching device interconnected in this manner are connected to taps T 1 , T 2 , and T 3 drawn out from the tap windings of the transformer body, not shown, respectively. . In addition, the upper and lower tap switching device and the fixed electrode 2
A', 2A' comrade, 2B', 2B' comrade, and 2C', 2
C' comrades are lead wires 11', 12' and 1, respectively.
3'.
１５は本考案に係る磁気遮蔽装置で、この遮蔽
装置は、銅、アルミニウム等の電気良導体の管体
または棒状体を格子状に組合せることにより構成
されている。図示の例では管体または棒状体から
なる縦部材１６ａ，１６ｂ及び前記タツプ切換装
置の略半部を距離を隔てて取囲む円弧の形に形成
された横部材１６ｃ，１６ｄを溶接してなる外枠
１６と、上下方向に所定の間隔をあけて平行に配
置されてそれぞれの両端が縦部材１６ａ，１６ｂ
に溶接された多数の横部材１７ａ，１７ｂ，…１
７ｎとからなり、横部材１７ａ，１７ｂ，…１７
ｎは横部材１６ｃ，１６ｄと同様にタツプ切換装
置，の周面の略半部を距離を隔てて取囲む円
弧の形に形成されている。また図示の例ではこの
磁気遮蔽装置に取付部材１８，１８の一端が溶接
され、これらの取付部材の他端がボルト１９，１
９によりタツプ切換装置のフレーム１等に固定さ
れている。 Reference numeral 15 denotes a magnetic shielding device according to the present invention, and this shielding device is constructed by combining tubes or rod-shaped bodies made of a good electrical conductor such as copper or aluminum in a lattice shape. In the illustrated example, an external member is formed by welding vertical members 16a, 16b made of tubes or rod-like bodies and horizontal members 16c, 16d formed in the shape of an arc surrounding approximately half of the tap switching device at a distance. Vertical members 16a and 16b are arranged in parallel with the frame 16 at a predetermined interval in the vertical direction, and each end has vertical members 16a and 16b.
A large number of horizontal members 17a, 17b,...1 welded to
7n, and horizontal members 17a, 17b,...17
Similar to the horizontal members 16c and 16d, n is formed in the shape of an arc surrounding approximately half of the circumferential surface of the tap switching device at a distance. Further, in the illustrated example, one end of the mounting members 18, 18 is welded to the magnetic shielding device, and the other end of these mounting members is welded to the magnetic shielding device.
9 is fixed to the frame 1 of the tap switching device.
この磁気遮蔽装置の高さ寸法は、積み重ねられ
た２台のタツプ切換装置，の高さより充分大
きく、また横方向寸法はタツプ切換装置の横方向
寸法より充分大きく、リード線１１〜１３及び１
１′〜１３′をも内包するように設定されている。
そしてこの磁気遮蔽装置は、第２図に示すよう
に、タツプ切換装置，とリード線１１〜１３
及び１１′〜１３′と対向させて配置され、取付部
材１８，１８によりフレーム１等に固定されて取
付けられている。またタツプ切換装置のいずれか
の固定電極（図示の例では固定電極２Ａ）が固定
電極２０により磁気遮蔽装置１５に電気的に接続
されている。 The height dimension of this magnetic shielding device is sufficiently larger than the height of the two stacked tap switching devices, and the lateral dimension is sufficiently larger than the lateral dimension of the tap switching devices, and the lead wires 11 to 13 and 1
1' to 13' are also included.
As shown in FIG. 2, this magnetic shielding device includes a tap switching device and lead wires 11 to 13.
and 11' to 13', and are fixedly attached to the frame 1 etc. by attachment members 18, 18. Further, one of the fixed electrodes (fixed electrode 2A in the illustrated example) of the tap switching device is electrically connected to the magnetic shielding device 15 through the fixed electrode 20.
上記磁気遮蔽装置は、ケース８内に収納された
タツプ切換装置，と図示しない変圧器本体と
の間を横切るように配設することにより最大の効
果を発揮する。図示しない変圧器本体からの漏洩
磁束が磁気遮蔽装置１５に到来すると、電気良導
体の縦部材と横部材とからなる閉ループに漏洩磁
束により該磁束に比例した循環電流が流れるため
反発磁界が生じ、この反発磁界はタツプ切換装置
に漏洩磁束が達するのを阻止する。したがつて上
下のタツプ切換装置を接続するリード線と、可動
電極とにより形成される閉回路に大きな循環電流
が流れるのを防止でき、上下のタツプ切換装置の
夫々に流れる電流に大きな差が生じるのを防ぐこ
とができる。 The above-mentioned magnetic shielding device exhibits its maximum effect by disposing it so as to cross between the tap switching device housed in the case 8 and the transformer main body (not shown). When leakage magnetic flux from the transformer main body (not shown) reaches the magnetic shielding device 15, the leakage magnetic flux causes a circulating current proportional to the magnetic flux to flow in a closed loop consisting of vertical and horizontal members that are good electrical conductors, creating a repulsive magnetic field. The repelling magnetic field prevents leakage flux from reaching the tap changer. Therefore, it is possible to prevent a large circulating current from flowing in the closed circuit formed by the movable electrode and the lead wire connecting the upper and lower tap switching devices, resulting in a large difference in the current flowing in each of the upper and lower tap switching devices. can be prevented.
上記実施例では、磁気遮蔽装置の横断面の形状
を円弧状としたが、この磁気遮蔽装置の形状は任
意であり、例えば第４図に示すように真直ぐな横
部材を用いて全体が一つの平面上に位置するよう
にしてもよく、また第５図に示すように横部材を
台形状に折曲げた構造としてもよい。 In the above embodiment, the cross-sectional shape of the magnetic shielding device is arcuate, but the shape of the magnetic shielding device can be arbitrary. For example, as shown in FIG. It may be positioned on a plane, or it may have a structure in which the horizontal member is bent into a trapezoidal shape as shown in FIG.
上記実施例では磁気遮蔽装置１５をリード線２
０によりタツプ切換装置の１つの固定電極２Ａに
接続しているが、このようにすると、磁気遮蔽装
置とタツプ間の電位差を全タツプ間電圧以下に抑
えることができるので、絶縁構造を簡単にするこ
とができる。 In the above embodiment, the magnetic shielding device 15 is connected to the lead wire 2.
0 to one fixed electrode 2A of the tap switching device. In this way, the potential difference between the magnetic shielding device and the tap can be suppressed to less than the total voltage between the taps, which simplifies the insulation structure. be able to.
上記の実施例では磁気遮蔽装置１５をタツプ切
換装置の略半部のみを囲むように配置している
が、２以上の磁気遮蔽装置を用意してタツプ切換
装置の略全周を囲むように配置してもよい。更に
横部材がタツプ切換装置の外周を略囲むようにし
て単一の磁気遮蔽装置でタツプ切換装置の略全周
を囲むように構成することもできる。この場合は
横部材が１ターンを形成しないようにその一部を
切つておくことが好ましい。 In the above embodiment, the magnetic shielding device 15 is arranged so as to surround only approximately half of the tap switching device, but two or more magnetic shielding devices are prepared and arranged so as to surround approximately the entire circumference of the tap switching device. You may. Furthermore, it is also possible to configure the transverse member to substantially surround the outer periphery of the tap switching device such that a single magnetic shielding device surrounds substantially the entire periphery of the tap switching device. In this case, it is preferable to cut a portion of the horizontal member so that it does not form one turn.
尚上記の説明では２台のタツプ切換装置を並列
運転するとしたが、並列運転するタツプ切換装置
の台数は任意である。 In the above description, two tap switching devices are operated in parallel, but the number of tap switching devices to be operated in parallel is arbitrary.
以上のように、本考案によれば、電気良導体か
らなる管または棒状体を格子状に組合わせること
により枠体を形成してこの枠体のタツプ切換装置
に対向させるようにしたので、枠体により形成さ
れた閉回路に、漏洩磁束により発生して流れる電
流によつて反発磁界を生じさせてタツプ切換装置
に到達する漏洩磁束の量を低減することができ、
並列運転されるタツプ切換装置相互間に形成され
る閉回路に大きな循環電流が流れるのを防止でき
る。したがつて複数のタツプ切換装置にそれぞれ
流れる電流に大きな差が生じるのを防止して並列
運転の効果を高めることができる利点がある。ま
た本考案の磁気遮蔽装置は管または棒状体を枠組
みするだけで構成できるので、構造が簡単な上に
軽量化を容易に図ることができ、取付けも容易に
行なうことができる等の特長がある。 As described above, according to the present invention, the frame is formed by combining tubes or rod-shaped bodies made of good electrical conductors in a grid pattern, and the frame is made to face the tap switching device. It is possible to reduce the amount of leakage magnetic flux that reaches the tap switching device by creating a repulsive magnetic field in the closed circuit formed by the current generated and flowing due to the leakage magnetic flux,
It is possible to prevent a large circulating current from flowing in the closed circuit formed between the tap switching devices operated in parallel. Therefore, there is an advantage that large differences in the currents flowing through the plurality of tap switching devices can be prevented from occurring and the effect of parallel operation can be enhanced. In addition, since the magnetic shielding device of the present invention can be constructed by simply framing a tube or rod-shaped body, it has features such as a simple structure, easy weight reduction, and easy installation. .
第１図は本考案の磁気遮蔽装置を設けない場合
に漏洩磁束によりタツプ切換装置に循環電流が生
じる様子を説明する説明図、第２図は本考案の一
実施例を一部断面して示した正面図、第３図は第
２図の平面図、第４図及び第５図はそれぞれ本考
案の磁気遮蔽装置の異なる変形例を示す平面図で
ある。
，……無負荷タツプ切換装置、１……フレ
ーム、２Ａ〜２Ｃ，２A′〜２C′……固定電極、
３……可動電極、４……共通駆動軸、１１〜１
３，１１′〜１３′……リード線、１５……磁気遮
蔽装置、１６……外枠、１６ａ，１６ｂ……縦部
材、１６ｃ，１６ｄ，１７ａ〜１７ｎ……横部
材。
Fig. 1 is an explanatory diagram illustrating how a circulating current is generated in a tap switching device due to leakage magnetic flux when the magnetic shielding device of the present invention is not provided, and Fig. 2 is a partially cross-sectional view of an embodiment of the present invention. FIG. 3 is a plan view of FIG. 2, and FIGS. 4 and 5 are plan views showing different modifications of the magnetic shielding device of the present invention. ,... No-load tap switching device, 1... Frame, 2A to 2C, 2A' to 2C'... Fixed electrode,
3...Movable electrode, 4...Common drive shaft, 11-1
3, 11' to 13'... Lead wire, 15... Magnetic shielding device, 16... Outer frame, 16a, 16b... Vertical member, 16c, 16d, 17a to 17n... Horizontal member.
Claims (1)
置の磁気遮蔽装置において、電気的良導体からな
る管または棒状体が格子状に組合わされて枠体が
形成され、前記枠体が前記タツプ切換装置の外面
と対向して配設されていることを特徴とするタツ
プ切換装置の磁気遮蔽装置。 In a magnetic shielding device for a tap switching device that is installed in parallel and operated in parallel, a frame is formed by combining tubes or rod-shaped bodies made of a good electrical conductor in a lattice shape, and the frame body is a magnetic shielding device for a tap switching device that is installed in parallel and operated in parallel. A magnetic shielding device for a tap switching device, characterized in that the device is disposed facing the outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18329479U JPS62181Y2 (en) | 1979-12-28 | 1979-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18329479U JPS62181Y2 (en) | 1979-12-28 | 1979-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56101630U JPS56101630U (en) | 1981-08-10 |
| JPS62181Y2 true JPS62181Y2 (en) | 1987-01-07 |
Family
ID=29693596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18329479U Expired JPS62181Y2 (en) | 1979-12-28 | 1979-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62181Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5738331B2 (en) * | 2013-02-07 | 2015-06-24 | 三菱電機株式会社 | Tap changer |
-
1979
- 1979-12-28 JP JP18329479U patent/JPS62181Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56101630U (en) | 1981-08-10 |
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