JPH0124335B2 - - Google Patents
Info
- Publication number
- JPH0124335B2 JPH0124335B2 JP56101281A JP10128181A JPH0124335B2 JP H0124335 B2 JPH0124335 B2 JP H0124335B2 JP 56101281 A JP56101281 A JP 56101281A JP 10128181 A JP10128181 A JP 10128181A JP H0124335 B2 JPH0124335 B2 JP H0124335B2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- current
- movable
- resistant member
- 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
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【発明の詳細な説明】 本発明はガス絶縁断路器に関する。[Detailed description of the invention] The present invention relates to a gas insulated disconnector.
従来の断路器は無負荷時における系統の切り離
しと接続を責務とし、送電線の充電電流を開閉す
る能力を有すればよいものであつた。しかしなが
ら最近、開閉装置がSF6ガス絶縁化されるに伴
い、装置の簡略化と経済的運用の必要性から、断
路器にも負荷電流開閉能力が要求されるようにな
つてきている。 Conventional disconnectors were responsible for disconnecting and connecting the grid during no-load conditions, and only had to have the ability to switch on and off the charging current of the power transmission line. However, recently, as switchgear has become insulated with SF 6 gas, disconnectors are also required to have a load current switching capability due to the need for equipment simplification and economical operation.
その一つが、第１図に示すような二系統Ａ、Ｂ
の送電母線の電源側と負荷側が共通にされループ
が形成される場合の一方の系統の切離しである。 One of them is the two systems A and B shown in Figure 1.
This is the disconnection of one system when the power supply side and load side of the power transmission bus are shared and a loop is formed.
第１図において、断路器D1あるいはD2を開い
て一方の系統の切離しを行なうとき、全電流が閉
じている断路器D1側の系統に流れる。従つて、
開離して電流をしや断する断路器D2には、閉じ
ている側の系統の降下電圧が印加される。すなわ
ち、この場合のしや断条件は（分流電源）で、
（全電流インピーダンス）の回復電圧となる。 In FIG. 1, when one of the systems is disconnected by opening the disconnector D1 or D2 , all current flows to the system on the side of the closed disconnector D1 . Therefore,
The voltage drop of the closed system is applied to the disconnector D2 , which opens to cut off the current. In other words, the cut-off condition in this case is (shunt power supply),
(total current impedance) is the recovery voltage.
ループ長が長いとき回復電圧は大きくなるの
で、断路器のしや断責務は厳しいものとなり、従
来の並切り形（ガス中で可動電極を固定電極から
開離されるだけでアークへ圧縮ガスの吹付は行な
わない方式）では、しや断能力が不足してくる。 When the loop length is long, the recovery voltage becomes large, so the disconnection force of the disconnector becomes severe. (methods that do not perform this) will lack shearing ability.
しや断能力を高めるため、パツフア方式を採用
している断路器もあるが操作力はかなり大きくな
るので、小さい容量では経済的でない。 In order to increase the disconnection capacity, there are disconnectors that use the power chain method, but since the operating force is quite large, it is not economical for small capacity.
操作力の増強を要しない方式として、アーク駆
動コイルによりアークを磁界により回転駆動さ
せ、これにより消弧する方式がある。 As a method that does not require an increase in operating force, there is a method in which the arc is rotationally driven by a magnetic field using an arc drive coil, and thereby the arc is extinguished.
しかしながら、この方式で、充電電流のしや断
を行つて、再点弧が起るとコイルに高いサージ電
圧が印加される。そのためコイルの絶縁が破れ短
絡する恐れがある。コイルが短絡していると、ル
ープ電流が分流してしまうので、アークを回転さ
せるための十分な磁界が発生しないことになる。 However, with this method, a high surge voltage is applied to the coil when the charging current is interrupted and restrike occurs. As a result, the insulation of the coil may be broken and a short circuit may occur. If the coil is shorted, the loop current will be shunted and there will not be enough magnetic field to rotate the arc.
本発明は上記事情に鑑みて成されたもので、簡
易な構造で、優秀なループ電流しや断性能を有し
かつ充電電流しや断時にコイルを過電圧から保護
し、しや断能力を長く保持しうる構造を有するガ
ス絶縁断路器を提供することを目的とする。 The present invention has been made in view of the above circumstances, and has a simple structure, excellent loop current shedding performance, protects the coil from overvoltage when the charging current is cut off, and extends the shearing ability for a long time. An object of the present invention is to provide a gas insulated disconnect switch having a structure that can be maintained.
以下に図面を用いて本発明の一実施例を詳細に
説明する。 An embodiment of the present invention will be described in detail below using the drawings.
第２図は本発明に係るガス絶縁断路器の全体の
概略構造を説明する図であり、その要部詳細構造
を第３図に示す。 FIG. 2 is a diagram illustrating the overall general structure of the gas insulated disconnector according to the present invention, and FIG. 3 shows the detailed structure of the main parts thereof.
第２図において絶縁ガス１が充填された筒状ケ
ース２内部に固定電極部３は導体４ａを支持する
絶縁スペーサ３ａによつて収納固定し、固定電極
部３に対向して配置される可動電極部５は、同様
に導体４ｂを支持する絶縁スペーサ３ｂによつて
収納固定する。但し、両電極部３，５の固定方法
はこの他にもあり、本方法に限定するものではな
い。 In FIG. 2, a fixed electrode part 3 is housed and fixed inside a cylindrical case 2 filled with an insulating gas 1 by an insulating spacer 3a that supports a conductor 4a, and a movable electrode is placed opposite to the fixed electrode part 3. The portion 5 is housed and fixed by an insulating spacer 3b that similarly supports the conductor 4b. However, there are other methods of fixing the electrode parts 3 and 5, and the method is not limited to this method.
可動電極部５の一部を構成する可動接触子部６
は絶縁棒７、リンク８を介して、図示していない
操作機構部に連結されている。 A movable contact portion 6 forming part of the movable electrode portion 5
is connected to an operating mechanism (not shown) via an insulating rod 7 and a link 8.
尚、閉極中の通電径路は４ａ，３，６，５，４
ｂの順である。 In addition, the energization paths during closing are 4a, 3, 6, 5, 4.
The order is b.
第３図は第２図に示した固定電極部３と可動接
触子部６の詳細構造を示す上半縦断面図であり、
閉極中の状態を示す。固定電極部の詳細構造を述
べると、固定側主通電導体３１には接触子ベース
３２が固着されている。接触子ベース３２には固
定通電接触子３３が取り付けられ、固定通電接触
子３３と対向して配置される可動通電接触子６１
と接離自在に接触する。 FIG. 3 is an upper half vertical sectional view showing the detailed structure of the fixed electrode part 3 and the movable contact part 6 shown in FIG.
Indicates the state in which the pole is closed. Describing the detailed structure of the fixed electrode section, a contact base 32 is fixed to the fixed main current-carrying conductor 31. A fixed current-carrying contact 33 is attached to the contactor base 32, and a movable current-carrying contact 61 is arranged facing the fixed current-carrying contact 33.
contact with the
この際の接触圧力を得るため、固定通電接触子
３３の上部にはバネ３４、バネカバー３５が取り
付けられている。さらに可動通電接触子６１の内
側には同心的に可動アーク指状接触子６２が設け
られている。可動アーク指状接触子６２の基部６
２ａは可動通電接触子と電気的にも機械的にも接
続されている。 In order to obtain the contact pressure at this time, a spring 34 and a spring cover 35 are attached to the upper part of the fixed current-carrying contact 33. Furthermore, a movable arc finger contact 62 is provided concentrically inside the movable energizing contact 61. Base 6 of movable arc finger contact 62
2a is electrically and mechanically connected to the movable current-carrying contact.
固定通電接触子３３の内側には同心的に固定ア
ーク指状接触子３６が設けられ、可動アーク指状
接触子６２と接離自在に接触する。 A fixed arc finger contact 36 is provided concentrically inside the fixed current-carrying contact 33 and comes into contact with the movable arc finger contact 62 so as to be able to move toward and away from it.
固定アーク指状接触子３６の先端部は可動アー
ク指状接触子６２と接離しアークにさらされるた
め、耐アーク性の部材３６ａで形成し、その中間
部外周には筒状に形成したアーク駆動コイル３６
ｂを設ける。アーク駆動コイル３６ｂは一端を前
記耐アーク性の部材３６ａに、他端をコイルエン
ドリング３６ｃに電気的に接続され且つ構造的に
も接合されている。コイル３６ｂは絶縁テープな
どで被覆し、又絶縁材質のモールド３６ｆで機械
構造的に強化する。第３図ｂに示す様に、コイル
エンドリング３６ｃには軸方向に溝４０を設け
る。また、第３図ｃは第３図ａに示す可動アーク
指状接触子６２を矢印方向から見た図である。可
動アーク指状接触子６２はボルト６６で可動側通
電接触子６１に固着されている。可動アーク指状
接触子６２は先端部に図示の如く軸方向に溝６５
が設けてある。この溝により半径方向のたわみを
可能としている。又、前記アーク駆動コイル３６
ｂの内側には絶縁材質の補助部材３６ｄが耐アー
ク性部材３６ａとコイルエンドリング３６ｃ間に
取り付けられている。耐アーク性部材３６ａ及び
コイルエンドリング３６ｃが補助部材３６ｄの内
面と接触する面には歯状突起３６ｅが設けられ、
可動アーク指状接触子６２との接触圧が得られる
様に構成されている。これによつて補助部材３６
ｄはアーク駆動コイル３６ｄと、耐アーク性部材
３６ａ及びコイルエンドリング３６ｃにより包囲
された状態となる。そして耐アーク性部材３６ａ
とコイルエンドリング３６ｃの対向面間には空隙
を設け、アーク駆動コイル３６ｂと電気的に並列
に過電圧保護用ギヤツプ３７を形成させている。
又耐アーク性部材３６ａと過電圧保護用ギヤツプ
３７を形成するコイルエンドリング３６ｃの少く
とも一方は比透磁率の高い金属にて構成し、又、
耐アーク性部材３６ａは耐アーク性の高い金属
（例えば銅−タングステン合金）で構成する。 Since the tip of the fixed arc finger contact 36 is exposed to the arc when it comes into contact with and separates from the movable arc finger contact 62, it is made of an arc-resistant member 36a, and a cylindrical arc drive is formed on the outer periphery of the middle part. coil 36
b. The arc drive coil 36b is electrically and structurally connected to the arc-resistant member 36a at one end and the coil end ring 36c at the other end. The coil 36b is covered with an insulating tape or the like, and mechanically reinforced with a mold 36f made of an insulating material. As shown in FIG. 3b, the coil end ring 36c is provided with a groove 40 in the axial direction. Further, FIG. 3c is a view of the movable arc finger contact 62 shown in FIG. 3a, viewed from the direction of the arrow. The movable arc finger contact 62 is fixed to the movable current-carrying contact 61 with bolts 66. The movable arc finger contact 62 has a groove 65 in the axial direction at its tip as shown in the figure.
is provided. This groove allows for radial deflection. Further, the arc drive coil 36
Inside b, an auxiliary member 36d made of an insulating material is attached between the arc-resistant member 36a and the coil end ring 36c. A tooth-like protrusion 36e is provided on the surface where the arc-resistant member 36a and the coil end ring 36c contact the inner surface of the auxiliary member 36d,
It is constructed so that a contact pressure with the movable arc finger contact 62 can be obtained. This allows the auxiliary member 36
d is surrounded by the arc drive coil 36d, the arc-resistant member 36a, and the coil end ring 36c. And arc-resistant member 36a
A gap is provided between the opposing surfaces of the coil end ring 36c and the overvoltage protection gap 37 that is electrically parallel to the arc drive coil 36b.
Further, at least one of the arc-resistant member 36a and the coil end ring 36c forming the overvoltage protection gap 37 is made of a metal with high relative magnetic permeability, and
The arc-resistant member 36a is made of a highly arc-resistant metal (for example, a copper-tungsten alloy).
尚、各接触子間の構成は、通電接触子３３，６
１の開離の後アーク指状接触子３６，６２が開離
する様構成している。さらに固定電極部には通電
接触子３３の側面外周を覆う形でシールド３８が
備えられている。 In addition, the configuration between each contact is as follows: current-carrying contacts 33, 6
The arc finger contacts 36, 62 are configured to separate after the first opening. Further, the fixed electrode section is provided with a shield 38 to cover the outer periphery of the side surface of the current-carrying contact 33.
第４図は本発明に係るガス絶縁断路器の開極中
の状態を示す図である。 FIG. 4 is a diagram showing a state in which the gas insulated disconnector according to the present invention is in an open state.
可動アーク指状接触子６２と固定アーク指状接
触子３６の耐アーク性部材３６ａ間に生じたアー
ク３０はアーク駆動コイル３６ａによつて発生し
た磁界により回転駆動される。このことにより冷
却効果が促進される。即ち、図示の磁束Φはアー
ク３０に対しての直交成分を有し、その値も大き
く設定することが可能である。又、この際耐アー
ク性部材３６ａ及びコイルエンドリング３６ｃの
少くとも一方は比透磁率の高い物質で構成してあ
るため磁力線は耐アーク性部材３６ａ近傍で密に
なり発生したアーク３０に作用する磁束Φは多く
なる。また耐アーク性部材３６ａの先端部に軸方
向に溝を設けてあるため、うず電流の発生による
逆磁界による磁束の発生を抑制することができ
る。 The arc 30 generated between the movable arc finger contact 62 and the arc-resistant member 36a of the fixed arc finger contact 36 is rotationally driven by the magnetic field generated by the arc drive coil 36a. This enhances the cooling effect. That is, the illustrated magnetic flux Φ has a component orthogonal to the arc 30, and its value can also be set large. Further, at this time, since at least one of the arc-resistant member 36a and the coil end ring 36c is made of a material with high relative magnetic permeability, the lines of magnetic force become dense near the arc-resistant member 36a and act on the generated arc 30. The magnetic flux Φ increases. Further, since the arc-resistant member 36a has a groove in the axial direction at its tip, it is possible to suppress the generation of magnetic flux due to a reverse magnetic field caused by the generation of eddy current.
以上の作用によりアーク３０は冷却され、電流
零点で消弧される。第５図に充電電流をしや断し
て再点弧した場合の状態を示す。この場合、アー
ク駆動コイル３６ｂに高いサージ電圧が印加され
る。しかし、固定アーク指状接触子３６の先端部
を形成する耐アーク性部材３６ａと、固定側主通
電導体３１に接続されるコイルエンドリング３６
ｃの対向面間には過電圧保護用ギヤツプ３７を形
成する空隙が設けられているので、ギヤツプＧの
放電によりアーク駆動コイル３６ｂの絶縁は保護
されることになる。又、アーク指状接触子３６，
６２を通電接触子３３，６１の各々の内側に設け
ているためアーク３０をケース２から離れた位置
で発生させることができるので短絡事故発生をも
低減することができる。一方、アーク駆動コイル
３６ｂには電流によつて大きな電磁力が働くの
で、コイルの強度が十分でない場合は、アーク駆
動コイル３６ｂは機械的損傷をうけることにな
る。しかしながら、本発明にあつてはアーク駆動
コイル３６ｂの内側には絶縁材質の補助部材３６
ｄを取り付けているため、電流しや断時に働く大
きな電磁力にも十分耐えることができる。従つて
ループ電流をしや断時にはアーク駆動コイル３６
ａにより、しや断に十分な磁界を発生できるの
で、しや断性能は良好に保たれる。 The arc 30 is cooled by the above action and extinguished at the current zero point. FIG. 5 shows the state when the charging current is cut off and then restarted. In this case, a high surge voltage is applied to the arc drive coil 36b. However, the arc-resistant member 36a forming the tip of the fixed arc finger contact 36 and the coil end ring 36 connected to the fixed side main conductor 31
Since a gap forming an overvoltage protection gap 37 is provided between the opposing surfaces of the arc drive coil 36b, the insulation of the arc drive coil 36b is protected by the discharge of the gap G. Also, arc finger contacts 36,
62 is provided inside each of the energizing contacts 33 and 61, the arc 30 can be generated at a position away from the case 2, and the occurrence of short circuit accidents can also be reduced. On the other hand, since a large electromagnetic force acts on the arc drive coil 36b due to the current, if the strength of the coil is not sufficient, the arc drive coil 36b will suffer mechanical damage. However, in the present invention, an auxiliary member 36 made of an insulating material is provided inside the arc drive coil 36b.
d, it can sufficiently withstand large electromagnetic forces that act when the current is interrupted. Therefore, when the loop current is interrupted, the arc drive coil 36
Since a magnetic field sufficient for shearing can be generated by a, good shearing performance is maintained.
尚、過電圧保護特性の変更は、Ｇの長さを変化
させることにより容易に可能である。 Note that the overvoltage protection characteristics can be easily changed by changing the length of G.
以上説明したように本発明によれば、簡易な構
造で優秀なループしや断性能を有し、かつ充電電
流しや断時に、アーク駆動コイルを過電圧から保
護し、しや断能力を長く保持しうる構造を有する
ガス絶縁断路器を提供できる。 As explained above, the present invention has a simple structure and excellent loop breaking performance, protects the arc drive coil from overvoltage when charging current breaks, and maintains breaking capability for a long time. It is possible to provide a gas insulated disconnector having a structure that allows for
第１図は系統に配置されループ電流開閉責務を
課せられる断路器を説明する図、第２図は本発明
の一実施例のガス絶縁断路器の概略構成図、第３
図ａは第２図に示したガス絶縁断路器の要部詳細
図であり、閉極中の状態を示す図、第３図ｂはコ
イルエンドリングの軸方向拡大図、第３図ｃは可
動側アーク電極の先端部拡大図、第４図は第２図
の開極中の状態を示す図、第５図は再点弧の状態
を示す図である。
１……絶縁ガス、２……筒状ケース、３３……
固定通電接触子、３６ａ……耐アーク性部材、３
６ｂ……アーク駆動コイル、３６ｃ……コイルエ
ンドリング、３６ｄ……補助部材、３６……固定
アーク指状接触子、３７……過電圧保護用ギヤツ
プ、６１……可動通電接触子、６２……可動アー
ク指状接触子。
FIG. 1 is a diagram for explaining a disconnector placed in a system and charged with loop current switching responsibilities, FIG. 2 is a schematic configuration diagram of a gas-insulated disconnector according to an embodiment of the present invention, and FIG.
Figure a is a detailed view of the main parts of the gas insulated disconnector shown in Figure 2, showing the closed state, Figure 3 b is an enlarged view of the coil end ring in the axial direction, and Figure 3 c is a movable FIG. 4 is an enlarged view of the tip of the side arc electrode, and FIG. 4 is a diagram showing the opening state of FIG. 2, and FIG. 5 is a diagram showing the restriking state. 1... Insulating gas, 2... Cylindrical case, 33...
Fixed current-carrying contact, 36a... Arc-resistant member, 3
6b...Arc drive coil, 36c...Coil end ring, 36d...Auxiliary member, 36...Fixed arc finger contact, 37...Gap for overvoltage protection, 61...Movable current-carrying contact, 62...Movable Arc finger contacts.
Claims (1)
筒状の可動通電接触子の内側に配置され且つこの
通電接触子と電気的に接続される可動アーク指状
接触子と、前記可動通電接触子と接離自在に対向
して配置された筒状の固定通電接触子の内側に、
前記可動アーク指状接触子と接離自在に対向して
配置される固定アーク指状接触子とを備えるカス
絶縁断路器において、前記固定アーク指状接触子
は先端部を形成する耐アーク性部材と、前記固定
通電接触子と同心的に配置し一側を前記耐アーク
性部材と電気的に接続し、他側を前記固定通電接
触子と電気的に接続するコイルエンドリングに電
気的に接続されるアーク駆動コイルとを備え、こ
のアーク駆動コイルと電気的に並列に前記コイル
エンドリングと前記耐アーク性部材との対向面間
に過電圧保護用ギヤツプを形成する空隙を設け、
前記アーク駆動コイルを前記耐アーク性部材とコ
イルエンドリングとの中間部外周に配置し、前記
アーク駆動コイルの内側に絶縁材質の補助部材を
取り付けるとともに、前記コイルエンドリングま
たは耐アーク性部材の先端部の少なくとも一方に
軸方向に溝を設けたことを特徴とするガス絶縁断
路器。1 Inside a cylindrical case filled with insulating gas,
a movable arc finger-like contact disposed inside a cylindrical movable current-carrying contact and electrically connected to the current-carrying contact; and a cylindrical finger-like contact disposed opposite to the movable current-carrying contact so as to be able to freely approach and separate from the movable current-carrying contact. Inside the fixed current-carrying contact of
In the cast insulation disconnector comprising the movable arc finger contact and the fixed arc finger contact disposed so as to be able to move toward and away from the movable arc finger contact, the fixed arc finger contact may include an arc-resistant member forming a tip portion. and a coil end ring arranged concentrically with the fixed current-carrying contact, one side electrically connected to the arc-resistant member, and the other side electrically connected to the fixed current-carrying contact. an arc drive coil, and a gap is provided electrically in parallel with the arc drive coil to form an overvoltage protection gap between opposing surfaces of the coil end ring and the arc-resistant member;
The arc drive coil is disposed on the outer periphery of an intermediate portion between the arc resistant member and the coil end ring, and an auxiliary member made of an insulating material is attached to the inside of the arc drive coil, and a tip of the coil end ring or the arc resistant member is attached. A gas insulated disconnect switch characterized in that a groove is provided in the axial direction on at least one of the parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10128181A JPS585926A (en) | 1981-07-01 | 1981-07-01 | Gas insulating disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10128181A JPS585926A (en) | 1981-07-01 | 1981-07-01 | Gas insulating disconnecting switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS585926A JPS585926A (en) | 1983-01-13 |
| JPH0124335B2 true JPH0124335B2 (en) | 1989-05-11 |
Family
ID=14296476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10128181A Granted JPS585926A (en) | 1981-07-01 | 1981-07-01 | Gas insulating disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585926A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6351369B2 (en) * | 2014-05-19 | 2018-07-04 | 三菱電機株式会社 | Switchgear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581933A (en) * | 1981-06-26 | 1983-01-07 | 株式会社東芝 | Gas insulating disconnecting switch |
-
1981
- 1981-07-01 JP JP10128181A patent/JPS585926A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581933A (en) * | 1981-06-26 | 1983-01-07 | 株式会社東芝 | Gas insulating disconnecting switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS585926A (en) | 1983-01-13 |
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