JPH0693407B2 - Tap changer under load - Google Patents
Tap changer under loadInfo
- Publication number
- JPH0693407B2 JPH0693407B2 JP60001307A JP130785A JPH0693407B2 JP H0693407 B2 JPH0693407 B2 JP H0693407B2 JP 60001307 A JP60001307 A JP 60001307A JP 130785 A JP130785 A JP 130785A JP H0693407 B2 JPH0693407 B2 JP H0693407B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum switch
- tap
- cam
- time difference
- opening
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は、変圧器のタツプの切換えを無停電のまま敏速
に行う負荷時タツプ切換器に係り、特に時間差機構部に
より真空スイツチを開閉する早切操作機構の改良に関す
る。Description: FIELD OF THE INVENTION The present invention relates to a load tap changer that quickly switches a tap of a transformer without interruption, and particularly relates to a quick switch that opens and closes a vacuum switch by a time difference mechanism. The present invention relates to improvement of a cutting operation mechanism.
近年、高層建物において使用される変電機器は、火災が
発生すると大災害になる恐れがあるため、防災性を要求
されるようになつてきている。変圧器もその例外ではな
く、油入変圧器からSF6ガス入り、すなわちガス絶縁変
圧器が使用されるようになつてきた。これらの変圧器に
使用される負荷時タツプ切換器は、一つのタツプから他
のタツプへ電流を切換えるものであるが、油入変圧器の
場合には油中に露出した接触子により電流を遮断し、ガ
ス絶縁変圧器の場合にはガス中に露出した接触子により
電流を遮断するようになつている。ガス中に露出した接
触子により電流を遮断する負荷時タツプ切換器は、冷却
効果が小さく、しかも金属片が飛び散るため、ガス絶縁
変圧器内の絶縁性を損う。このため、ガス絶縁変圧器用
の負荷時タツプ切換器においては、ガス中の接触子に代
つて真空スイツチを使用するようになつてきている。こ
のような真空スイツチを使用した負荷時タツプ切換器の
一相分の等価回路を第６図に示した。In recent years, substation equipment used in high-rise buildings is required to be disaster-preventive because it may cause a great disaster when a fire occurs. Transformers are no exception, and oil-immersed transformers have come to use SF 6 gas-filled, or gas-insulated transformers. The load tap changer used in these transformers switches the current from one tap to another, but in the case of oil-filled transformers, the current is cut off by the contact exposed in the oil. However, in the case of a gas-insulated transformer, the current is cut off by the contact exposed in the gas. The tap changer under load, which cuts off the current by the contact exposed in the gas, has a small cooling effect, and metal pieces scatter, which impairs the insulating property in the gas insulation transformer. Therefore, in the load tap changer for the gas insulation transformer, a vacuum switch has been used in place of the contact in the gas. An equivalent circuit for one phase of the load tap changer using such a vacuum switch is shown in FIG.
第６図において、タツプ選択器S1,S2は、タツプ巻線Ｔ
の両側から引出された複数のタツプ端子T1,T2,T3,T4間
を移動できるようになつている。第６図に示した状態に
おいては、電流がタツプ端子T6−タツプ選択器S1−第１
真空スイツチVS1−第３真空スイツチVR1−中性端子Ｎに
流れている。この状態からタツプ端子T4に切換える場合
には、タツプ選択器S2をタツプ端子T2からタツプ端子T4
に移動させ、早切操作機構部10により第１真空スイツチ
VS1を解放した後、第４真空スイツチVR2を閉じる。この
とき、電流はタツプ端子T3−タツプ選択器S1−限流抵抗
器r1−第３真空スイツチVR1−中性端子Ｎに流れ、また
タツプ端子T4−タツプ選択器S2−限流抵抗器r2−第４真
空スイツチVR2−中性端子Ｎに流れる。そして、タツプ
端子T3,T4間の電位差によりタツプ端子T3,T4間に循環電
流が流れる。In FIG. 6, tap selectors S 1 and S 2 are tap windings T
A plurality of tap terminals T 1 , T 2 , T 3 , T 4 drawn from both sides of can be moved. In the state shown in FIG. 6, the current is tap terminal T 6 -tap selector S 1 -first
Vacuum switch VS 1 −Third vacuum switch VR 1 −Flowing to neutral terminal N. To switch from this state to tap terminal T 4 , tap tap selector S 2 from tap terminal T 2 to tap terminal T 4
To the first vacuum switch by the quick cut operation mechanism unit 10.
After releasing VS 1 , close the 4th vacuum switch VR 2 . At this time, the current flows to the tap terminal T 3 -the tap selector S 1 -the current limiting resistor r 1 -the third vacuum switch VR 1 -the neutral terminal N, and the tap terminal T 4 -the tap selector S 2 -the limit. The current resistor r 2 −the fourth vacuum switch VR 2 − flows to the neutral terminal N. Then, the circulating current flows between the tap terminals T 3, T 4 by the potential difference between the tap terminals T 3, T 4.
この状態からさらに、早切操作機構部10いより第３真空
スイツチVR1を解放した後、第２真空スイツチVS2を閉じ
れば、循環電流が流れなくなり、電流がタツプ端子T4−
第２真空スイツチVS2−第４真空スイツチVR2−中性端子
Ｎに流れ、タツプの切換えが完了する。From this state, if the second vacuum switch VS 2 is closed after releasing the third vacuum switch VR 1 from the quick cut operation mechanism section 10, the circulating current stops flowing, and the current flows at the tap terminal T 4 −.
The second vacuum switch VS 2 −the fourth vacuum switch VR 2 − flows to the neutral terminal N, and the tap switching is completed.
上記したことは、変圧器の一次側に負荷時タツプ切換器
を接続したとき、電圧を上昇させる場合の作用であつ
て、第７図に真空スイツチの切換えタイミングのシーケ
ンスを示してある。電圧を降下させる場合には、第２真
空スイツチVS2を開放した後、第３真空スイツチVR1を閉
じ、さらに第４真空スイツチVR2を開放し、第１真空ス
イツチVS1を閉じるように操作する。What has been described above is the operation for increasing the voltage when the tap switching device under load is connected to the primary side of the transformer, and FIG. 7 shows the sequence of the switching timing of the vacuum switch. To decrease the voltage, open the second vacuum switch VS 2 , then close the third vacuum switch VR 1 , further open the fourth vacuum switch VR 2 and close the first vacuum switch VS 1. To do.
これらの真空スイツチの開閉は、特開昭50−159827号公
報又は特開昭50−159828号公報に示されているように、
バネ蓄勢力を利用した早切操作機構部10により行われ
る。しかしながら、真空スイツチの開閉を行う従来のバ
ネ力のみを利用した早切操作機構は、真空スイツチの投
入を迅速に行うため、また、真空スイツチの閉じた状態
における端子の接触状態を良好に保つため、バネ荷重の
大きなものが用いられており、真空スイツチの投入時に
真空スイツチ内の接点がバウンドする現象、すなわちチ
ヤタリングを生じる欠点があつた。このため、接点間に
おいてアークが発生し、接点の消耗が早くなる。これを
避けるため、バネ荷重を下げ、開閉動作を遅くすると、
真空スイツチの投入後のワイプ力を得ることができなく
なるという問題を生じる。The opening and closing of these vacuum switches, as shown in JP-A-50-159827 or JP-A-50-159828,
This is performed by the quick cut operation mechanism unit 10 that utilizes the spring force. However, the conventional quick-opening operation mechanism that uses only the spring force to open and close the vacuum switch is used to quickly insert the vacuum switch, and to maintain good contact between the terminals when the vacuum switch is closed. Since a large spring load is used, there is a drawback that the contact inside the vacuum switch bounces when the vacuum switch is turned on, that is, chattering occurs. Therefore, an arc is generated between the contacts, and the contacts are quickly consumed. To avoid this, lower the spring load and slow the opening / closing operation,
There arises a problem that it becomes impossible to obtain the wiping force after the vacuum switch is turned on.
また、負荷時のタツプ切換器に関するものとして、真空
スイツチを使用し該真空スイツチの開閉手段をカムによ
り時間差機構部を上下動可能にしたものが、特開昭50−
63437号公報、及び、特開昭58−6295号公報に開示され
ている。しかし、いずれの公報も真空スイツチの接触子
の復帰手段にバネを使用しているために、前述したよう
な、真空スイツチの投入時に真空スイツチの接触子がバ
ウンドしてチャタリングを生じる欠点がある。Further, as a tap changer at the time of load, a vacuum switch is used, and the opening / closing means of the vacuum switch can be moved up and down by a cam to move the time difference mechanism up and down.
It is disclosed in Japanese Patent No. 63437 and Japanese Patent Laid-Open No. 58-6295. However, since each of the publications uses a spring as a means for returning the contact of the vacuum switch, there is a drawback that the contact of the vacuum switch bounces and chatters when the vacuum switch is turned on as described above.
本発明は、真空スイツチの投入速度を適切にして、チヤ
タリングの発生を防止することができる負荷時タツプ切
換器を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a load tap changer capable of preventing the occurrence of chattering by appropriately adjusting the vacuum switch input speed.
本発明は、タツプ巻線より引出した複数の端子間を移動
するタツプ選択器と、このタツプ選択器に接続した複数
の真空スイツチと、これら各真空スイツチを上下動によ
り開閉時間をずらして開閉する時間差機構部と、この時
間差機構部を駆動する回転軸と、該回転軸に連結した円
筒カムとを含んでなる負荷時タツプ切換器において、前
記円筒カムの外周面上に設けられたカム溝と、一方が該
カム溝と係合し他方が前記時間差機構部に固定されてい
るカムフォローとを備え、前記カム溝の形状が平面上に
展開された場合にほぼ正弦波状となるように形成され、
真空スイツチの可動接触子の速度を、略正弦波状となる
ようにして、真空スイツチの投入速度を適正に保つと共
に、チヤタリングが生じないように構成したものであ
る。According to the present invention, a tap selector that moves between a plurality of terminals drawn out from a tap winding, a plurality of vacuum switches connected to the tap selector, and the vacuum switches are opened and closed by shifting the opening and closing time by opening and closing. In a load tap changer including a time difference mechanism section, a rotating shaft for driving the time difference mechanism section, and a cylindrical cam connected to the rotating shaft, a cam groove provided on an outer peripheral surface of the cylindrical cam. , One of which is engaged with the cam groove and the other of which is a cam follower which is fixed to the time difference mechanism section, and is formed so that the shape of the cam groove becomes substantially sinusoidal when developed on a plane. ,
The speed of the movable contact of the vacuum switch is made substantially sinusoidal so that the vacuum switch can be maintained at an appropriate speed and chattering does not occur.
本発明に係る負荷時タツプ切換器の好ましい実施例を、
添付図面に従つて詳説する。A preferred embodiment of the load tap changer according to the present invention,
It will be described in detail with reference to the accompanying drawings.
第１図は、本発明に係る負荷時タツプ切換器の早切操作
機構部の断面図であつて、その一相分が示されている。
早切操作機構部10は、複数の絶縁支持板12が第２図に示
すように円をなすように配設してあり、この絶縁支持板
12にボルト14をもつて上真空スイツチ支持絶縁板16、上
開閉機構支持絶縁板18、下開閉機構支持絶縁板20、下真
空スイツチ支持絶縁板22が固定してある。上真空スイツ
チ支持絶縁板16の下面には第１真空スイツチVS1と第３
真空スイツチVR1の本体と固定接触子が固定してある。
また、上真空スイツチ支持絶縁板16の中央部は、開口部
24となつており、この開口部24に駆動軸26の先端に取り
付けた絶縁操作軸28が挿入してある。FIG. 1 is a cross-sectional view of an early-off operation mechanism portion of a load tap changer according to the present invention, showing one phase thereof.
The quick-cut operation mechanism section 10 has a plurality of insulating support plates 12 arranged in a circle as shown in FIG.
An upper vacuum switch supporting insulating plate 16, an upper opening / closing mechanism supporting insulating plate 18, a lower opening / closing mechanism supporting insulating plate 20, and a lower vacuum switch supporting insulating plate 22 are fixed with bolts 14 at 12. On the lower surface of the upper vacuum switch supporting insulating plate 16, the first vacuum switch VS 1 and the third vacuum switch VS 1
The main body of the vacuum switch VR 1 and the fixed contact are fixed.
In addition, the central portion of the upper vacuum switch supporting insulating plate 16 has an opening.
The insulating operation shaft 28 attached to the tip of the drive shaft 26 is inserted into the opening 24.
上開閉機構支持絶縁板18と下開閉機構支持絶縁板20との
間には、一対の支持柱30が取り付けてある。支持柱30
は、一対の支持金具32,34を貫通している。支持金具32,
34は、円板に形成されて支持柱30に摺動自在となつてお
り、時間差機構部36の上下端部が固定されている。この
時間差機構部36は、第３図に示すように第２図に示した
各相の真空スイツチに対応して６個が円筒カム38を中心
に放射状に配置されている。円筒カム38は、２条のカム
溝40,42が設けられており、支持金具32,34を貫通してい
るカム軸44を介して、上開閉機構支持絶縁板18と下開閉
機構支持絶縁板20とに回転自在に支持されている。ま
た、カム軸44の上端部は、絶縁操作軸28の下端部にピン
結合されており、絶縁操作軸28と一体に回動するように
なつている。カム溝40,42に係合しているカムフオロー4
6,48は、カムフオロー支持軸50,52にピン54を介して回
転自在に取り付けてある。カムフオロー支持軸50,52
は、時間差機構部36の内側に配置され、上下端が前記支
持金具32,34に固定してある。A pair of support columns 30 are attached between the upper opening / closing mechanism supporting insulating plate 18 and the lower opening / closing mechanism supporting insulating plate 20. Support pillar 30
Penetrates through the pair of support fittings 32, 34. Support bracket 32,
The disc 34 is formed into a disc and is slidable on the support column 30, and the upper and lower ends of the time difference mechanism 36 are fixed. As shown in FIG. 3, six time difference mechanism portions 36 are radially arranged around the cylindrical cam 38 in correspondence with the vacuum switches of each phase shown in FIG. The cylindrical cam 38 is provided with two cam grooves 40 and 42, and an upper opening / closing mechanism supporting insulating plate 18 and a lower opening / closing mechanism supporting insulating plate are provided via a cam shaft 44 penetrating the supporting fittings 32 and 34. It is rotatably supported by 20 and. The upper end portion of the cam shaft 44 is pin-coupled to the lower end portion of the insulating operation shaft 28 so as to rotate integrally with the insulating operation shaft 28. Cam follower 4 engaging the cam grooves 40, 42
6, 48 are rotatably attached to the cam follower support shafts 50, 52 via pins 54. Cam follower support shaft 50,52
Are arranged inside the time difference mechanism section 36, and the upper and lower ends are fixed to the support fittings 32, 34.
各時間差機構部36の上下部には、開閉ロツド56,58,60,6
2が設けてある。時間差機構部36の上部に設けた開閉ロ
ツド56,60は、上開閉機構支持絶縁板18を貫通し、上端
部に第１真空スイツチVS1、第３真空スイツチVR1の可動
接触子を有している。また、時間差機構部36の下部に設
けた開閉ロツド58,62は、それぞれ下開閉機構支持絶縁
板20を貫通し、下端部に第４真空スイツチVR2と第２真
空スイツチVS2との可動接触子を有している。そして、
真空スイッチと開閉機構支持絶縁板との間の各開閉ロッ
ド56,58,60,62の適当な位置には、ストツパ64,66,68,70
が固定してある。Opening and closing rods 56, 58, 60, 6 are installed at the top and bottom of each time difference mechanism unit 36.
2 is provided. The opening / closing rods 56, 60 provided on the upper part of the time difference mechanism section 36 penetrate the upper opening / closing mechanism supporting insulating plate 18, and have movable contacts of the first vacuum switch VS 1 and the third vacuum switch VR 1 at the upper end. ing. Further, the opening / closing rods 58, 62 provided at the lower portion of the time difference mechanism unit 36 penetrate the lower opening / closing mechanism supporting insulating plate 20, respectively, and the lower end portions thereof are in movable contact with the fourth vacuum switch VR 2 and the second vacuum switch VS 2. Have a child And
The stoppers 64, 66, 68, 70 are placed at appropriate positions of the respective opening / closing rods 56, 58, 60, 62 between the vacuum switch and the insulating plate supporting the opening / closing mechanism.
Is fixed.
上記のごとく構成した実施例の作用は次のとおりであ
る。The operation of the embodiment configured as described above is as follows.
第１図のように第２真空スイツチVS2と第４真空スイツ
チVR2とが閉じた状態から、第１真空スイツチVS1と第３
真空スイツチVR1とを閉じる場合には、第１図に示した
状態において、図示しないバネ蓄勢力を利用した駆動系
を駆動し、駆動軸26をＡ方向（第２図の時計方向）にす
速く一定角度θだけ回動させる。駆動軸26が回動する
と、円筒カム38は、絶縁操作軸28、カム軸44とともに駆
動軸26と一体的に回動する。As shown in FIG. 1, from the state in which the second vacuum switch VS 2 and the fourth vacuum switch VR 2 are closed, the first vacuum switch VS 1 and the third vacuum switch VS 2 are closed.
When the vacuum switch VR 1 is closed, in the state shown in FIG. 1, the drive system utilizing the spring accumulating force (not shown) is driven to move the drive shaft 26 in the A direction (clockwise direction in FIG. 2). Rotate quickly by a certain angle θ. When the drive shaft 26 rotates, the cylindrical cam 38 rotates integrally with the drive shaft 26 together with the insulating operation shaft 28 and the cam shaft 44.
このため、カム溝40,42に係合しているカムフオロー46,
48がカム溝40,42に沿つて上昇し、カムフオロー支持軸5
0,52を介して支持金具32,34を支持柱30に沿つて押し上
げる。この支持金具32,34には、時間差機構部36が固定
してあるため、支持金具32,34の上昇に伴い時間差機構
部36が上昇し、第２真空スイツチVS2と第４真空スイツ
チVR2が開放された後、所定距離Ｈだけ上昇してストツ
パ66,70が下開閉機構支持絶縁板20に当接するととも
に、第１真空スイツチVS1と第３真空スイツチVR1との可
動接触子が固定接触子に当接し、第４図に示すように第
１真空スイツチVS1と第３真空スイツチVR1が閉じられ
る。なおカム溝40,42は、その展開図を第５図に示すよ
うに略正弦波状をなしておりカムフオロー46,48の移動
速度も正弦波状となる。このため、時間差機構部36の昇
降速度も第５図の下部に示すように正弦波状となり、各
真空スイツチの投入時に減速されるため、真空スイツチ
のチヤタリングを防止することができ、それを抑えるた
めに強いバネを使用する必要がなく、機構の小型化を図
るとができる。Therefore, the cam follower 46, which engages with the cam grooves 40, 42,
48 rises along the cam grooves 40 and 42, and the cam follower support shaft 5
The support fittings 32, 34 are pushed up along the support column 30 via 0, 52. Since the time difference mechanism section 36 is fixed to the support fittings 32 and 34, the time difference mechanism section 36 rises as the support fittings 32 and 34 rise, and the second vacuum switch VS 2 and the fourth vacuum switch VR 2 After being opened, the stopper 66, 70 rises by a predetermined distance H to contact the lower opening / closing mechanism supporting insulating plate 20, and the movable contactors of the first vacuum switch VS 1 and the third vacuum switch VR 1 are fixed. Abutting on the contact, the first vacuum switch VS 1 and the third vacuum switch VR 1 are closed as shown in FIG. The cam grooves 40 and 42 have a substantially sinusoidal shape as shown in FIG. 5, and the moving speed of the cam followers 46 and 48 is also sinusoidal. Therefore, the ascending / descending speed of the time difference mechanism section 36 also becomes sinusoidal as shown in the lower part of FIG. 5, and is decelerated at the time of turning on each vacuum switch, so that the chattering of the vacuum switch can be prevented and suppressed. Since it is not necessary to use a strong spring, the mechanism can be downsized.
時間差機構部36の構造は、たとえば本願出願人の出願に
係る特願昭59−42589号、特願昭59−60712号に示された
ものを用いることができ、第７図に示したシーケンスを
実現するためには、開閉ロツド56,58,60,62の時間差機
構部36内の長さの調節や、ギヤツプを変えたりすること
などにより、移動距離を変えて行うことができる。As the structure of the time difference mechanism unit 36, for example, those shown in Japanese Patent Application Nos. 59-42589 and 59-60712, which are filed by the applicant of the present application, can be used, and the sequence shown in FIG. 7 is used. In order to realize it, it is possible to change the moving distance by adjusting the length of the opening / closing rods 56, 58, 60, 62 in the time difference mechanism unit 36, changing the gears, or the like.
第４図に示した第１真空スイツチVS1、第３真空スイツ
チVR1が閉じられた状態から、第１真空スイツチVS1と第
３真空スイツチVR1とを開放して、第２真空スイツチV
S2、第４真空スイツチVR2を閉じる場合には、駆動軸26
を第２図の反時計方向Ｂにす速く回動させる。この駆動
軸26の反時計方向への回動により、カムフオロー46,48
がカム溝40,42に沿つて下降し、カムフオロー支持軸50,
52、取付金具32,34を介して時間差機構部36を下方に移
動させる。これにより第１真空スイツチVS1、第３真空
スイツチVR1の可動接触子がそれぞれ固定接触子から離
れた後、ストツパ64,68が上開閉機構支持絶縁板18の上
面に当接し、第２真空スイツチVS2、第４真空スイツチV
R2の可動接触子がそれぞれの固定接触子に当接し、第２
真空スイツチVS2と第４真空スイツチVR2とが投入され
る。First vacuum switch VS 1 shown in FIG. 4, from the third state to the vacuum switch VR 1 is closed, and opens the first vacuum switch VS 1 and a third vacuum switch VR 1, the second vacuum switch V
When S 2 and the fourth vacuum switch VR 2 are closed, drive shaft 26
Is rotated in the counterclockwise direction B in FIG. 2 quickly. By rotating the drive shaft 26 in the counterclockwise direction, the cam followers 46, 48
Moves down along the cam grooves 40, 42, and the cam follower support shaft 50,
52, the time difference mechanism section 36 is moved downward via the mounting brackets 32, 34. As a result, after the movable contacts of the first vacuum switch VS 1 and the third vacuum switch VR 1 are separated from the fixed contacts, the stoppers 64 and 68 contact the upper surface of the upper opening / closing mechanism supporting insulating plate 18, and the second vacuum switch Switch VS 2 , 4th vacuum switch V
The movable contact of R 2 abuts on each fixed contact,
The vacuum switch VS 2 and the fourth vacuum switch VR 2 are turned on.
なお、上記説明においてはＶ相を例にとり各真空スイツ
チの開閉を説明したが、Ｕ相,W相においてもカムフオロ
ー46,48の移動によりＶ相と同時に各真空スイツチの開
閉が行われる。In the above description, the opening and closing of each vacuum switch has been described by taking the V phase as an example, but also in the U phase and the W phase, the movement of the cam followers 46 and 48 causes the opening and closing of each vacuum switch simultaneously with the V phase.
以上説明したように、本発明によれば、真空スイツチの
投入速度を適切にして真空スイツチのチヤタリングを防
止することができる。As described above, according to the present invention, it is possible to prevent the chattering of the vacuum switch by adjusting the injection speed of the vacuum switch appropriately.
第１図は本発明に係る負荷時タツプ切換器の早切操作機
構部の断面図であつて、第２真空スイツチと第４真空ス
イツチとが投入された状態を示す図、第２図は第１図の
II−II線に沿う断面図、第３図は第１図のIII−III線に
沿う断面図、第４図は前記実施例の第１真空スイツチと
第３真空スイツチとが投入された状態を示す断面図、第
５図はカム溝の展開図と時間差機構部の移動速度とを示
す図、第６図は真空スイツチを用いた負荷時タツプ切換
器の一相分の等価回路図、第７図は第６図の等価回路の
各真空スイツチの開閉タイミングのシーケンスを示す図
である。 10…早切操作機構部、12…絶縁支持板、18…上開閉機構
支持絶縁板、20…下開閉機構支持絶縁板、26…駆動軸、
30…支持柱、36…時間差機構部、38…円筒カム、40,42
…カム溝、46,48…カムフオロー、S1,S2…タツプ選択
器、Ｔ…タツプ巻線、T1,T2,T3,T4…タツプ端子、VS1…
第１真空スイツチ、VS2…第２真空スイツチ、VR1…第３
真空スイツチ、VR2…第４真空スイツチ。FIG. 1 is a cross-sectional view of a fast-turning operation mechanism portion of a tap changer under load according to the present invention, showing a state in which a second vacuum switch and a fourth vacuum switch are turned on, and FIG. Figure 1
A sectional view taken along the line II-II, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 shows a state in which the first vacuum switch and the third vacuum switch of the above-mentioned embodiment are turned on. FIG. 5 is a sectional view showing the development of the cam groove and a moving speed of the time difference mechanism portion. FIG. 6 is an equivalent circuit diagram of one phase of a load tap changer using a vacuum switch. The figure is a diagram showing the sequence of the opening / closing timing of each vacuum switch of the equivalent circuit of FIG. 10 ... Early cut operation mechanism section, 12 ... Insulation support plate, 18 ... Upper opening / closing mechanism supporting insulation plate, 20 ... Lower opening / closing mechanism supporting insulation plate, 26 ... Drive shaft,
30 ... Support pillar, 36 ... Time difference mechanism part, 38 ... Cylindrical cam, 40, 42
… Cam groove, 46,48… Cam follow, S 1 , S 2 … Tap selector, T… Tap winding, T 1 , T 2 , T 3 , T 4 … Tap terminal, VS 1 …
1st vacuum switch, VS 2 ... 2nd vacuum switch, VR 1 ... 3rd
Vacuum switch, VR 2 ... 4th vacuum switch.
Claims (1)
動するタップ選択器と、このタップ選択器に接続した複
数の真空スイッチと、これら各真空スイッチを上下動に
より開閉時間をずらして開閉する時間差機構部と、この
時間差機構部を駆動する回転軸と、該回転軸に連結した
円筒カムとを含んでなる負荷時タップ切換器において、
前記円筒カムの外周面上に設けられたカム溝と、一方が
該カム溝と係合し他方が前記時間差機構部に固定されて
いるカムフォローとを備え、前記カム溝の形状が平面上
に展開された場合にほぼ正弦波状となるように形成され
たことを特徴とする負荷時タップ切換器。1. A tap selector that moves between a plurality of terminals drawn from a tap winding, a plurality of vacuum switches connected to the tap selector, and a vertical movement of each of these vacuum switches that causes the opening and closing times to shift and opens and closes. In a load tap changer including a time difference mechanism section, a rotating shaft for driving the time difference mechanism section, and a cylindrical cam connected to the rotating shaft,
The cylindrical cam is provided with a cam groove provided on the outer peripheral surface thereof, and a cam follower having one engaged with the cam groove and the other fixed to the time difference mechanism section. A tap changer under load, which is formed so as to have a substantially sinusoidal shape when expanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60001307A JPH0693407B2 (en) | 1985-01-08 | 1985-01-08 | Tap changer under load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60001307A JPH0693407B2 (en) | 1985-01-08 | 1985-01-08 | Tap changer under load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61160918A JPS61160918A (en) | 1986-07-21 |
| JPH0693407B2 true JPH0693407B2 (en) | 1994-11-16 |
Family
ID=11497831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60001307A Expired - Fee Related JPH0693407B2 (en) | 1985-01-08 | 1985-01-08 | Tap changer under load |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0693407B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054599B (en) * | 2009-11-06 | 2013-03-27 | 贵州长征电力设备有限公司 | Elevating and rotating mechanism of changeover switch |
| EP3758036A1 (en) * | 2019-06-25 | 2020-12-30 | ABB Power Grids Switzerland AG | Selector switch for on-load tap changer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2348091C2 (en) * | 1973-09-25 | 1975-08-28 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg | Three-phase cylindrical diverter switch for step switches of step transformers |
| JPS5914277B2 (en) * | 1981-07-01 | 1984-04-03 | 株式会社日本触媒 | Anti-scale agent |
-
1985
- 1985-01-08 JP JP60001307A patent/JPH0693407B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61160918A (en) | 1986-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4588880B2 (en) | On-load tap changer with selector | |
| US4412116A (en) | Circuit breaker with unitary actuating shaft | |
| US5834717A (en) | On-load tap changer of a step switch | |
| US3935407A (en) | Multiphase vacuum switch assembly having cam operated spring charging drive mechanism with lost motion connection | |
| JP6373254B2 (en) | Load tap changer | |
| SE9100938D0 (en) | LOAD SWITCHES FOR WINDING SWITCHES FOR ADJUSTABLE TRANSFORMERS | |
| US4207445A (en) | On-load tap changer switch assembly | |
| JPH0693407B2 (en) | Tap changer under load | |
| US3194900A (en) | Modular tap-changing selector switch for connecting selectively fixed tap contacts to a transfer switch | |
| US3415957A (en) | Transfer switch for tap-changing regulating transformers having current-carrying contacts and operating means therefor achieving high initial speeds of contact separation | |
| US5693922A (en) | Diverter switch and link system for load tap changer | |
| JP3387285B2 (en) | Vacuum switch type load tap changer | |
| EP0211031B1 (en) | Interrupter/isolator | |
| US3671687A (en) | Transfer switch for tap-changing regulating transformers including lost motion interconnection driving mechanism | |
| JPH11283849A (en) | On-load tap changer | |
| JP7119226B2 (en) | Change-over switch and on-load tap-changer for on-load tap-changers | |
| JPS584807B2 (en) | Fukaji Tatsupu Kirikaekaiheiki | |
| US4138602A (en) | Over-center toggle switch | |
| JPS586295B2 (en) | Switching switch for tap changer on load | |
| JPH11307362A (en) | On-load tap switching unit | |
| JPS5917526B2 (en) | Cylindrical load switch for tap transformer | |
| DE2244793A1 (en) | DRIVE FOR HIGH VOLTAGE SWITCHING DEVICES | |
| US3360618A (en) | Transfer switch for tap-changing transformers convertible for adaptation to a wide range of currents | |
| JP3439620B2 (en) | Tap changer under load | |
| KR20230118119A (en) | On-load tap changer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |