JPS6216004B2 - - Google Patents
Info
- Publication number
- JPS6216004B2 JPS6216004B2 JP16801280A JP16801280A JPS6216004B2 JP S6216004 B2 JPS6216004 B2 JP S6216004B2 JP 16801280 A JP16801280 A JP 16801280A JP 16801280 A JP16801280 A JP 16801280A JP S6216004 B2 JPS6216004 B2 JP S6216004B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum valve
- tap
- current limiting
- gas
- limiting resistor
- 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
- 230000007935 neutral effect Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
本発明は真空バルブを使用した抵抗式負荷時タ
ツプ切換器に係り、特にガス絶縁機器に使用する
に適した負荷時タツプ切換器に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resistive on-load tap changer using a vacuum valve, and particularly to an on-load tap changer suitable for use in gas-insulated equipment.
真空バルブはしや断性能が良いこと、接点寿命
が長いこと、またアークにより油を汚損すること
がないため保守が容易であることなどの理由によ
り、抵抗式負荷時タツプ切換器にも使用されてき
ている。特に、近年変圧器の不燃化、小形化の必
要性からガス絶縁変圧器に対する要求が高まるに
つれ、そのようなガス絶縁変圧器に使用する負荷
時タツプ切換器においては、機器の不燃性という
観点からすると、従来の油中でアークをしや断す
る方式のものでは不適当であるため、真空バルブ
を使用したガス絶縁負荷時タツプ切換器を用いる
方が望ましい。 Vacuum valves are also used in resistive load tap changers because of their good breaking performance, long contact life, and ease of maintenance as they do not contaminate oil with arcing. It's coming. In particular, as the demand for gas-insulated transformers has increased in recent years due to the need to make transformers non-combustible and more compact, load-on tap changers used in such gas-insulated transformers are becoming more and more inflammable. In this case, the conventional method of cutting off the arc in oil is not suitable, so it is preferable to use a gas-insulated load tap changer using a vacuum valve.
真空バルブを使用したガス絶縁負荷時タツプ切
換器は、真空バルブを使用した切換開閉器とタツ
プ選択器とにより構成されており、切換開閉器は
圧力が大気圧かそれより微かに高いだけの絶縁性
ガスを封入した容器内に収納されている。すなわ
ち、ガス絶縁負荷時タツプ切換器に使用される絶
縁性ガスの絶縁耐力はガス圧に依存し、ガス圧力
が高い程絶縁耐力が高くなるにも拘らず、ガス絶
縁負荷タツプ切換器の切換開閉器が収納される容
器内のガス圧力は、真空バルブのベローズの寿命
がガス圧力が高い程短かくなるため、前述のよう
に大気圧と等しいか、それより微かに高い程度で
使用することになる。 A gas-insulated on-load tap changer using a vacuum valve consists of a changeover switch using a vacuum valve and a tap selector. It is housed in a container filled with gas. In other words, the dielectric strength of the insulating gas used in the gas insulated load tap changer depends on the gas pressure, and even though the higher the gas pressure, the higher the dielectric strength, the switching opening and closing of the gas insulated load tap changer depends on the gas pressure. The gas pressure inside the container in which the device is stored should be equal to or slightly higher than atmospheric pressure, as the higher the gas pressure, the shorter the life of the bellows of the vacuum valve. Become.
ところが、この種ガス絶縁負荷時タツプ切換器
は第１図に示すように、タツプ巻線ＷTのタツプ
T1，T2……を選択するタツプ選択器の２個の可
動接点２，３と中性点４との間にそれぞれ真空バ
ルブＶ、限流抵抗Ｒの直列回路と真空バルブＶの
並列回路を構成して各真空バルブＶを所定の動作
シーケンスで切換えることによりタツプを切換え
るものであるので、例えば通電している側の真空
バルブV1，V2、限流抵抗R1、およびそれらを接
続する導体５と開極している側の真空バルブ
V3、限流抵抗R2、およびそれらを真空バルブV4
へ接続する導体６との間に常時加わつているステ
ツプ電圧に対する耐圧をもたせるため、これらの
間の絶縁距離を十分に大きくとる必要があり、こ
れが機器を小形化する上での障害となつていた。 However, in this type of gas-insulated load tap changer, as shown in Fig. 1, the tap of the tap winding W T
Between the two movable contacts 2 and 3 of the tap selector that selects T 1 , T 2 , and the neutral point 4, there is a vacuum valve V, a series circuit of current limiting resistor R, and a parallel circuit of vacuum valve V. Since the tap is switched by configuring the vacuum valve V and switching each vacuum valve V in a predetermined operation sequence, for example, the vacuum valves V 1 and V 2 on the energized side, the current limiting resistor R 1 , and the connection between them The vacuum valve on the side that is open to the conductor 5
V 3 , current limiting resistor R 2 , and connect them to the vacuum valve V 4
In order to withstand the step voltage that is constantly applied between the conductor 6 connected to the conductor 6, it is necessary to provide a sufficiently large insulation distance between them, and this has been an obstacle to downsizing the device. .
本発明は前述のような障害をなくし、小形で安
全な、真空バルブを使用したガス絶縁の負荷時タ
ツプ切換器を提供することを目的とするものであ
る。 SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned problems and provide a small, safe, gas-insulated on-load tap changer using a vacuum valve.
以下本発明を図面に示す一実施例について説明
する。第２図において、ＷTは複数のタツプを有
するタツプ巻線の一部、T1，T2はタツプ、２，
３はタツプ選択器の可動接点、V1，V2，V3，V4
は真空バルブ、R1，R2は限流抵抗である。真空
バルブV2は限流抵抗R1と並列に接続されてお
り、真空バルブV1は真空バルブV2及び限流抵抗
R1とタツプ選択器可動接点２との間に直列に挿
入されている。真空バルブV4は限流抵抗R2と並
列に接続されており、真空バルブV3は真空バル
ブV4及び限流抵抗R2とタツプ選択器可動接点３
との間に直列に挿入されている。真空バルブV2
と限流抵抗R1の真空バルブV1と接続されていな
い側は中性点４へ接続されており、また真空バル
ブV4と限流抵抗R2の真空バルブV3と接続されて
いない側も中性点４へ接続されている。この負荷
時タツプ切換器の切換動作は第３図に示すような
動作順序で行なわれる。今、第２図において、タ
ツプ選択器の可動接点２側の回路で通電している
とすると、開極側の回路のうち真空バルブV4、
限流抵抗R2、および接続導体６とそれに接続さ
れている側の真空バルブV3の一方の接点までは
全て中性点４の電位にあるため、これらと通電側
回路の真空バルブV1，V2、限流抵抗R1、接続導
体５とは同電位となり、絶縁を考慮する必要がな
い。また、逆にタツプ選択器の可動接点３側の回
路で通電しているとすると、真空バルブV2、限
流抵抗R1、接続導体５及び接続導体５に接続さ
れている側の真空バルブV1の一方の接点までは
全て通電側回路と同電位となり、絶縁を考慮する
必要がない。すなわち、第２図のような回路で
は、切換開閉器部においてステツプ電圧に対する
絶縁距離を考慮する必要があるのは、真空バルブ
V1，V3のタツプ選択器の可動接点２，３に接続
されている側の接点だけとなるため、切換開閉器
部を従来より小形化することができる。また、真
空バルブを使用した負荷時タツプ切換器において
は、外部よりサージ等が侵入した場合に、開極し
ている側の回路の真空バルブの接点間で発弧する
ことにより、タツプ間短絡となる可能性があつた
が、第２図の回路では、例えば、タツプ選択器の
可動接点２側の回路で通電している場合にサージ
が加わつたとすると、真空バルブV3の接点間に
電圧が加わり発弧することになるが、真空バルブ
V4の接点間は並列に接続されている限流抵抗R2
により同電位となつているため発弧することはな
く、発弧による続流は限流抵抗R2により制限さ
れるため、タツプ間短絡には到らないという利点
もある。 An embodiment of the present invention shown in the drawings will be described below. In FIG. 2, W T is a part of a tap winding having multiple taps, T 1 , T 2 are taps, 2,
3 is the movable contact of the tap selector, V 1 , V 2 , V 3 , V 4
is a vacuum valve, and R 1 and R 2 are current limiting resistors. Vacuum valve V 2 is connected in parallel with current limiting resistor R 1 , vacuum valve V 1 is connected in parallel with vacuum valve V 2 and current limiting resistor
It is inserted in series between R1 and the tap selector movable contact 2. The vacuum valve V 4 is connected in parallel with the current limiting resistor R 2 , and the vacuum valve V 3 is connected to the vacuum valve V 4 and the current limiting resistor R 2 as well as the tap selector movable contact 3.
are inserted in series between. Vacuum valve V 2
The side of the current limiting resistor R 1 that is not connected to the vacuum valve V 1 is connected to the neutral point 4, and the side of the vacuum valve V 4 and the current limiting resistor R 2 that is not connected to the vacuum valve V 3 is connected to the neutral point 4. is also connected to neutral point 4. The switching operation of the load tap changer is performed in the order of operation shown in FIG. Now, in FIG. 2, if the circuit on the movable contact 2 side of the tap selector is energized, the vacuum valve V 4 ,
Since the current limiting resistor R 2 and the connecting conductor 6 and one contact of the vacuum valve V 3 on the side connected to it are all at the potential of the neutral point 4, these and the vacuum valve V 1 of the current-carrying circuit, V 2 , current-limiting resistor R 1 , and connection conductor 5 have the same potential, so there is no need to consider insulation. Conversely, if the circuit on the movable contact 3 side of the tap selector is energized, the vacuum valve V 2 , the current limiting resistor R 1 , the connecting conductor 5 and the vacuum valve V on the side connected to the connecting conductor 5 All contacts up to one of the contacts of 1 are at the same potential as the current-carrying circuit, so there is no need to consider insulation. In other words, in the circuit shown in Figure 2, it is necessary to consider the insulation distance for the step voltage in the switching switch section, since it is necessary to consider the insulation distance for the step voltage.
Since only the contacts connected to the movable contacts 2 and 3 of the V 1 and V 3 tap selectors are provided, the switching switch section can be made smaller than before. In addition, in a load tap changer that uses a vacuum valve, when a surge or the like enters from the outside, an arc occurs between the contacts of the vacuum valve on the open circuit, causing a short circuit between the taps. However, in the circuit shown in Figure 2, for example, if a surge is applied when the circuit on the movable contact 2 side of the tap selector is energized, the voltage between the contacts of the vacuum valve V3 will increase. This will cause an arc to occur, but the vacuum valve
A current limiting resistor R 2 is connected in parallel between the contacts of V 4
Since they are at the same potential, they will not fire, and the follow-on current due to firing will be limited by the current limiting resistor R2 , so there is also the advantage that short circuits between the taps will not occur.
また、第４図に示すように、４抵抗式で負荷時
タツプ切換器を構成した場合にも、真空バルブ
V1またはV6のタツプ選択器の可動接点に接続さ
れる側の接点以外の部分間については絶縁距離を
低減することができ、切換開閉器を小形化できる
と共に、タツプ間に加わるサージに対しても、第
２図と同様の効果を得ることができる。限流抵抗
を更に多く使用する場合でも、その増加した分の
限流抵抗を真空バルブと直列に接続したものを、
他の限流抵抗器に並列に接続することにより、第
２図、第４図に示す回路と同様な効果を得ること
ができる。 In addition, as shown in Figure 4, even when the on-load tap changer is configured with 4 resistors, the vacuum valve
The insulation distance between the contacts other than those connected to the movable contact of the V 1 or V 6 tap selector can be reduced, making the switching switch more compact and preventing surges from occurring between the taps. However, the same effect as shown in FIG. 2 can be obtained. Even when using more current limiting resistors, connect the increased current limiting resistors in series with the vacuum valve.
By connecting it in parallel with another current limiting resistor, the same effects as the circuits shown in FIGS. 2 and 4 can be obtained.
上記のように、２抵抗式もしくはそれ以上に限
流抵抗が多い多抵抗式ガス絶縁負荷時タツプ切換
器に真空バルブを使用する場合に、タツプ選択器
可動接点の各々に、第１の真空バルブと第２の真
空バルブを直列に接続し、それら２個のうち中性
点側に近い第２の真空バルブの各々に並列に限流
抵抗を接続することにより、従来より小形で、タ
ツプ間短絡の可能性のないガス絶縁負荷時タツプ
切換器を得ることができる。 As mentioned above, when using a vacuum valve in a two-resistance type or multi-resistance type gas-insulated load tap changer with many current-limiting resistances, the first vacuum valve is attached to each of the tap selector movable contacts. and a second vacuum valve are connected in series, and a current limiting resistor is connected in parallel to each of the second vacuum valves closer to the neutral point side. It is possible to obtain a gas-insulated on-load tap changer without the possibility of
なお、上記の説明は真空バルブをガス絶縁負荷
時タツプ切換器に適用した場合について行なつた
が、これは、ガスの方が絶縁油より耐圧が低いた
め、絶縁距離を低減できるようになることの利点
が大きいためであり、油絶縁負荷時タツプ切換器
においても同様な効果が得られるものである。 The above explanation was based on the case where a vacuum valve is applied to a gas-insulated load tap changer, but this is because gas has a lower withstand pressure than insulating oil, so the insulation distance can be reduced. This is because the advantages are great, and similar effects can be obtained in oil-insulated load tap changers.
第１図は従来の負荷時タツプ切換器の一例を示
す回路図、第２図は本発明による負荷時タツプ切
換器の一実施例を示す回路図、第３図は第２図に
示した実施例の切換動作順序を示すシーケンス
図、第４図は本発明の他の実施例を示す回路図で
ある。
図において、ＷTはタツプ巻線の一部、T1，T2
はタツプ、２，３はタツプ選択器の可動接点、
V1，V2，V3，V4，V5，V6は真空バルブ、４は中
性点、R1，R2，R3，R4は限流抵抗、５，６は導
体である。
FIG. 1 is a circuit diagram showing an example of a conventional on-load tap changer, FIG. 2 is a circuit diagram showing an embodiment of the on-load tap changer according to the present invention, and FIG. 3 is a circuit diagram showing an embodiment of the on-load tap changer according to the present invention. FIG. 4 is a sequence diagram showing an example switching operation order, and FIG. 4 is a circuit diagram showing another embodiment of the present invention. In the figure, W T is part of the tap winding, T 1 , T 2
is the tap, 2 and 3 are the movable contacts of the tap selector,
V 1 , V 2 , V 3 , V 4 , V 5 , V 6 are vacuum valves, 4 is a neutral point, R 1 , R 2 , R 3 , R 4 are current limiting resistors, and 5 and 6 are conductors. .
Claims (1)
の２個の可動接点と中性点との間に２抵抗式もし
くはそれ以上の多抵抗式の真空バルブを使用した
タツプ切換器を接続した負荷時タツプ切換器にお
いて、タツプ選択器の可動接点の各々に第１の真
空バルブと第２の真空バルブを直列に接続し、第
２の真空バルブを共通に中性点に接続し、それら
２個のうち、中性点側に近い第２の真空バルブの
各々に並列に限流抵抗を接続したことを特徴とす
る負荷時タツプ切換器。1 When a load is connected with a tap changer using a two-resistance type or more multi-resistance type vacuum valve between the two movable contacts of the tap selector that selects the tap of the tap winding and the neutral point. In a tap changer, a first vacuum valve and a second vacuum valve are connected in series to each of the movable contacts of the tap selector, the second vacuum valve is commonly connected to a neutral point, and the two vacuum valves are connected in series to each movable contact of the tap selector. A load tap changer characterized in that a current limiting resistor is connected in parallel to each of the second vacuum valves closer to the neutral point side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16801280A JPS5792813A (en) | 1980-12-01 | 1980-12-01 | On-load tap changer |
| DE19813146970 DE3146970A1 (en) | 1980-12-01 | 1981-11-26 | Load interrupter switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16801280A JPS5792813A (en) | 1980-12-01 | 1980-12-01 | On-load tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5792813A JPS5792813A (en) | 1982-06-09 |
| JPS6216004B2 true JPS6216004B2 (en) | 1987-04-10 |
Family
ID=15860162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16801280A Granted JPS5792813A (en) | 1980-12-01 | 1980-12-01 | On-load tap changer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5792813A (en) |
| DE (1) | DE3146970A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60210823A (en) * | 1984-04-04 | 1985-10-23 | Toshiba Corp | On-load tap changer |
| DE4231353C2 (en) * | 1991-09-19 | 1997-07-24 | Toshiba Kawasaki Kk | Tap changer |
| CN1036811C (en) * | 1993-05-06 | 1997-12-24 | 赖茵豪森机械制造公司 | Load Selector used for switch of adjustable transformer |
| CN1036958C (en) * | 1994-01-19 | 1998-01-07 | 赖茵豪森机械制造公司 | Load selector used in stepping switch of adjustable transformer |
| DE102010019948B4 (en) * | 2010-05-08 | 2015-06-11 | Maschinenfabrik Reinhausen Gmbh | OLTC |
| DE102010050882A1 (en) * | 2010-11-09 | 2012-05-10 | Maschinenfabrik Reinhausen Gmbh | step switch |
| DE102012107436A1 (en) * | 2012-08-02 | 2014-02-06 | Maschinenfabrik Reinhausen Gmbh | step switch |
| DE102019115970A1 (en) * | 2019-06-12 | 2020-12-17 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer |
| DE102020132772A1 (en) | 2020-12-09 | 2022-06-09 | Maschinenfabrik Reinhausen Gmbh | on-load tap changer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1337340A (en) * | 1962-07-19 | 1963-09-13 | Alsthom Cgee | On-load tap changer switch for transformers |
| FR1413424A (en) * | 1963-10-28 | 1965-10-08 | Ass Elect Ind | Improvements to tap changer devices |
-
1980
- 1980-12-01 JP JP16801280A patent/JPS5792813A/en active Granted
-
1981
- 1981-11-26 DE DE19813146970 patent/DE3146970A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5792813A (en) | 1982-06-09 |
| DE3146970A1 (en) | 1982-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3934174A (en) | Surge voltage protection for transfer switches for load-tap changers | |
| CN102473541B (en) | Tap changer | |
| US4081741A (en) | On-load tap changer | |
| KR20070078691A (en) | On-load tap-changer | |
| JPS6216004B2 (en) | ||
| US10373771B2 (en) | Tap-changer switching system and method of operating same | |
| US3544884A (en) | Load tap changer apparatus employing parallel circuits comprising vacuum and no-load switches | |
| JP2677584B2 (en) | High current switch | |
| EP0113953B1 (en) | On-load tap changer with vacuum switches | |
| US3493847A (en) | On-load tap changing circuits | |
| JPS6115569B2 (en) | ||
| CN1383163A (en) | Loading tap changer | |
| JPS609410B2 (en) | tap switching transformer | |
| US3806735A (en) | Tap changing transfer switch having series breaks | |
| US2246182A (en) | Apparatus for transformer tap changing under load | |
| CN119816910B (en) | Electrical switch for an on-load tap changer | |
| KR102955052B1 (en) | Electric switch for on-road tap changer | |
| US3445615A (en) | System for increasing the switching capacity of transfer switches for tap-changing transformers | |
| JPH0328801B2 (en) | ||
| JPS6214086B2 (en) | ||
| Frotscher | Tap-changer know-how: Enhancing the switching capacity of change-over selectors with minimized gas production | |
| CN120511162A (en) | On-load tap-changer transition circuit and voltage regulating method | |
| JPH0611010B2 (en) | Tap switching transformer under gas insulation load | |
| JPH0524732B2 (en) | ||
| JP3342805B2 (en) | Transformer tap changer |