JPS59205118A - Spiral arc type commutation type high voltage dc breaker - Google Patents
Spiral arc type commutation type high voltage dc breakerInfo
- Publication number
- JPS59205118A JPS59205118A JP8188283A JP8188283A JPS59205118A JP S59205118 A JPS59205118 A JP S59205118A JP 8188283 A JP8188283 A JP 8188283A JP 8188283 A JP8188283 A JP 8188283A JP S59205118 A JPS59205118 A JP S59205118A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- electrode
- fixed electrode
- breaker
- magnetic field
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明はスパイラルアーク式の転流形高圧直流しゃ断
器に係シ、特に消弧室の構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spiral arc commutating type high voltage DC breaker, and particularly to the structure of an arc extinguishing chamber.
直流しゃ断器として、バッファー吹付方式と、スパイラ
ルアーク方式とがあるが、前者のバッファー吹付方式は
、バッファー吹付けのために大きな操作駆動力を必要と
するという欠点がある。これに対して、後者のスパイラ
ルアーク方式は、消弧媒体（例えばＳＦ、ガス）中で電
極に磁界を加え、アークをスパイラル状に引伸ばすこと
によって、電源電圧相当にアーク電圧を高め、高電圧、
大電流の直流をしゃ断する方式であって、アークがスパ
イラル状であるので短かい電極間で高いアーク電圧を得
ることができ、しかも電極の開閉操作駆動力のみで足り
、小型で、軽量化できるという利点がある。There are two types of DC breaker, a buffer spraying method and a spiral arc method, but the former buffer spraying method has the disadvantage of requiring a large operational driving force for buffer spraying. On the other hand, the latter spiral arc method applies a magnetic field to the electrode in an arc-extinguishing medium (e.g. SF, gas) and stretches the arc in a spiral shape, increasing the arc voltage to the same level as the power supply voltage. ,
This method interrupts large direct current, and since the arc is spiral-shaped, it is possible to obtain a high arc voltage between short electrodes.Furthermore, only the driving force required to open and close the electrodes is required, making it compact and lightweight. There is an advantage.
従来、この種の装置として第１図に示すものがあった。Conventionally, there has been a device of this type as shown in FIG.
１は固定電極、２は可動電極であって略Ｅ字形状に形成
されて（７・る。３は励磁コイルであって、固定電極１
と可動電極２の中心軸と平行に磁界を発生させる。４は
テフロン等の絶縁材である。1 is a fixed electrode, 2 is a movable electrode, and is formed in a substantially E-shape (7). 3 is an excitation coil, and the fixed electrode 1
and generate a magnetic field parallel to the central axis of the movable electrode 2. 4 is an insulating material such as Teflon.
次に動作について説明する。可動電極２の形状を上述の
ように略Ｅ字形に形成し、励磁コイル３による磁界Ｈと
アーク電流５とを出来るだけ直角方向に交差させ、両者
間にフレミンクの左手の法則の電磁力を発生させること
によって、スパイラル状のアークを成長させる。そして
アーク電流５と可動電極２の下部電極６に流れる電流と
が逆方向に々るようにして、アーク電流５に電磁反撥力
を働かせ、発弧アーク５を外側に押し出しく引き伸ばす
）アーク電圧を高め、高電圧、大電流の直流をしゃ断す
る。Next, the operation will be explained. The shape of the movable electrode 2 is formed into a substantially E-shape as described above, and the magnetic field H generated by the excitation coil 3 and the arc current 5 are made to intersect as perpendicularly as possible to generate an electromagnetic force according to Flemink's left-hand rule between them. This causes a spiral arc to grow. Then, by making the arc current 5 and the current flowing through the lower electrode 6 of the movable electrode 2 flow in opposite directions, an electromagnetic repulsion force is exerted on the arc current 5, pushing the firing arc 5 outward and stretching it) to increase the arc voltage. Cuts off high voltage, high current direct current.
従来のスパイラルアーク方式の転流形直流しゃ断器は以
上のように構成されているので、コイル励磁が不可欠で
、しかも可動電極を流れる電流方向を変える構造を必要
とし、電極の構造が複雑等の欠点があった。Conventional spiral arc type commutating DC circuit breakers are constructed as described above, so coil excitation is essential, and a structure that changes the direction of the current flowing through the movable electrode is required, making the electrode structure complex and other problems. There were drawbacks.
この発明は上記のような従来のものの欠点を除去するた
めになされたもので、電極軸と直角方向に磁界を加える
ことによって、コイル励磁を用いることなく、小形で小
さな操作駆動力でアークを効果的にスパイラル状に引き
伸ばし、しかも電極構造を簡単にできる等のスパイラル
アーク方式の転流形高圧直流しゃ断器を提供することを
目的とする。This invention was made in order to eliminate the drawbacks of the conventional ones as described above. By applying a magnetic field in a direction perpendicular to the electrode axis, it is possible to effectively generate an arc with a small size and small operational driving force without using coil excitation. An object of the present invention is to provide a commutating type high-voltage DC breaker of the spiral arc type, which can be stretched into a spiral shape and has a simple electrode structure.
以下、この発明の一実施例を図について説明する。第２
図乃至第５図において、７は円筒状の固定電極、８は円
節状の可動電極であって、上記固定電極７との摺動接触
部８ａはフィンガー状に形成されている。９ぼテフロン
等で形成されている円柱状の絶縁体であって、第２図に
示すように、一端部を固定電極７と共に端子板１０に固
着され、他端部は可動電極８の内側に張出している。１
１゜１２は第２図に示すように、電極軸（イ）−（イ）
に対して直角方向に磁界Ｈを発生させる円筒形の永久磁
石であって、極性は相互に逆向きに設置されている。そ
して第２図、第３図に示すように一方の磁石１１は固定
電極７の外側に配置され、他方の磁石１２は固定電極７
の内側でかつ絶縁体９の内部に埋込配置されている。１
３は固定電極７の外周に配置された磁性板であって、永
久磁石１１．１２による磁界Ｈの漏れを少なくし、かつ
可動電極８側の磁界を強くし、該磁界Ｈとアークとの作
用を有効にする働きをする。An embodiment of the present invention will be described below with reference to the drawings. Second
In the figures, 7 is a cylindrical fixed electrode, 8 is a cylindrical movable electrode, and a sliding contact portion 8a with the fixed electrode 7 is formed in a finger shape. 9 is a cylindrical insulator made of Teflon or the like, and as shown in FIG. It's overhanging. 1
1°12 is the electrode axis (A) - (A) as shown in Figure 2.
It is a cylindrical permanent magnet that generates a magnetic field H in a direction perpendicular to the magnet, and its polarity is set in opposite directions. As shown in FIGS. 2 and 3, one magnet 11 is placed outside the fixed electrode 7, and the other magnet 12 is placed outside the fixed electrode 7.
and is embedded inside the insulator 9. 1
Reference numeral 3 denotes a magnetic plate arranged around the outer circumference of the fixed electrode 7, which reduces leakage of the magnetic field H caused by the permanent magnets 11 and 12, strengthens the magnetic field on the movable electrode 8 side, and prevents the interaction between the magnetic field H and the arc. It works to enable.
次にこの発明の動作について説明する。Next, the operation of this invention will be explained.
まず、閉極動作においては、第２図に示すよう罠、電流
ｉは端子板１０→固定電極７→可動電極８を経由して流
れ通電する。First, in the closing operation, as shown in FIG. 2, the current i flows through the terminal plate 10 -> fixed electrode 7 -> movable electrode 8 and is energized.
次に開極動作においては、開極指令によって第４図に示
すように、可動電極８と連結した駆動装置（図示せず）
によって右方へ移動し、開極するとこの可動電極８と固
定電極７どの間にアーク１４が発生する。このアーク１
４は電極軸（イ）−（イ）方向に流れるが、固定電極７
付近のアーク１４は永久磁石１１．１２による電極軸（
イ）−（イ）と直角方向の磁界と交差するので、フレミ
ングの左手の法則に従った電磁力が円柱状の絶縁体９の
外周に沿った円周方向に発生する。Next, in the opening operation, as shown in FIG. 4, a driving device (not shown) connected to the movable electrode 8 is
When the movable electrode 8 and the fixed electrode 7 are moved to the right and opened, an arc 14 is generated between the movable electrode 8 and the fixed electrode 7. this arc 1
4 flows in the electrode axis (a)-(a) direction, but the fixed electrode 7
Nearby arc 14 is connected to the electrode axis (
Since it intersects the magnetic field in the direction perpendicular to a)-(a), an electromagnetic force according to Fleming's left-hand rule is generated in the circumferential direction along the outer periphery of the cylindrical insulator 9.
一方、可動電極８側付近のアーク１４は外部磁界の作用
がないので、アーク１４０足１４ａは固定されるが、上
記固定電極７側のアーク１４の足１４ｂは円周方向に沿
った電磁力によって円周状に移動するために、アーク１
４は第５図、第６図に示すように、円柱状の絶縁体９の
周囲を高速でスパイラル状に巻き付けることとなる。こ
のスパイラル状のアーク１４は、第６図（ａ）に示すよ
うに、自己電流の磁界によって外周方向の発撥力ｆ。が
発生するために、外周方向に膨み、スパイラル状のアー
ク１４の外径が大きくなり、アーク１４の長さが大きく
なるので、アーク抵抗が増大しアーク電圧が高められる
。一方、スパイラル状のアーク１４０巻き数が増えてく
ると、電流、方向が同方向であるために、スパイラル状
のアーク１４間には第６図（ｂ）に示すように吸引電磁
力ｆ１が作用するので、短絡が発生し、このときアーク
電圧が急激に降下する。この短絡したアーク１４は第４
図に示すように、固定電極７と可動電極８との間で電磁
軸（イ）−（イ）方向に流れる。そして、電磁軸（イ）
−（イ）と同方向のアーク１４と、電極軸（イ）−（イ
）と直角方向の磁界Ｉ（との間に前述したメカニズムで
再度スパイラル状のアーク１４が発生し、このスパイラ
ル状のアーク発生 アーク短絡発生とを繰り返し、第７
図に示すように急激々アーク電圧の上昇と、犬き々アー
ク電圧の落差が生ずる。On the other hand, since the arc 14 near the movable electrode 8 side is not affected by the external magnetic field, the legs 14a of the arc 140 are fixed, but the legs 14b of the arc 14 near the fixed electrode 7 are affected by the electromagnetic force along the circumferential direction. To move circumferentially, arc 1
4, as shown in FIGS. 5 and 6, the coil is wound spirally around the cylindrical insulator 9 at high speed. As shown in FIG. 6(a), this spiral arc 14 generates a repulsive force f in the outer circumferential direction due to the magnetic field of the self-current. As a result, the spiral arc 14 swells in the outer circumferential direction, and the outer diameter of the spiral arc 14 increases, and the length of the arc 14 increases, increasing the arc resistance and increasing the arc voltage. On the other hand, as the number of turns of the spiral arc 140 increases, since the current and direction are the same, an attractive electromagnetic force f1 acts between the spiral arcs 14 as shown in FIG. 6(b). Therefore, a short circuit occurs, and at this time the arc voltage drops rapidly. This shorted arc 14 is the fourth
As shown in the figure, the current flows between the fixed electrode 7 and the movable electrode 8 in the electromagnetic axis (A)-(A) direction. And the electromagnetic axis (a)
- A spiral arc 14 is generated again by the mechanism described above between the arc 14 in the same direction as (A) and the magnetic field I (in the direction perpendicular to the electrode axis (A) - (A), and this spiral Repeating arc occurrence and arc short circuit occurrence, the seventh
As shown in the figure, a sudden rise in arc voltage and a sharp drop in arc voltage occur.
この発明は高電圧の直流しゃ断装置の転流用しゃ断器と
して最適であり、第８図にその実施例を示す。第８図に
おいて、ＣＢは転流用しゃ断器、Ｃは転流回路のコンデ
ンサ、Ｌは転流回路のインダクタンス、ＤＳは断路器で
ある。そこで、転流用しゃ断器ＣＢに開路指令が与えら
れると、この発明の直流しゃ断器はスパイラル状のアー
ク→アーク短絡の発生によシ、急峻なアーク電圧上昇と
、犬きｈアーク電圧落差を生ずる。このアーク電圧落差
によって転流回路のコンデンサＣおよびインダクタンス
Ｌに振動電流ｉＬｃが発生し、主回路電流Ｉ。は転流用
しゃ断器ＣＢの回路から転流回路のコンデンサＣおよび
インダクタンスＬに転流する。主回路電流１゜が転流回
路のコンデンサＣおよびインダクタンスしに転流すると
、転流しゃ断器ＣＢは電流をしゃ断する。一方、転流回
路ではコンデンサー０１非線形抵抗素子ＮＬＲのインピ
ーダンスが過渡的に上昇してくるために、転流電流は減
少するので、主回路電流ｌ。が減少する。この減少した
主回路電流ｊ。は断路器ＤＳで最終的にしゃ断する。This invention is most suitable as a commutation breaker for a high voltage DC breaker, and an embodiment thereof is shown in FIG. In FIG. 8, CB is a commutation breaker, C is a capacitor of the commutation circuit, L is an inductance of the commutation circuit, and DS is a disconnector. Therefore, when an open command is given to the commutation breaker CB, the DC breaker of the present invention causes a spiral arc to arc short circuit, resulting in a steep arc voltage rise and a sharp arc voltage drop. . This arc voltage drop generates an oscillating current iLc in the capacitor C and inductance L of the commutation circuit, and the main circuit current I. is commutated from the circuit of the commutation breaker CB to the capacitor C and inductance L of the commutation circuit. When the main circuit current 1° commutates through the capacitor C and the inductance of the commutation circuit, the commutation breaker CB cuts off the current. On the other hand, in the commutation circuit, since the impedance of the capacitor 01 and the nonlinear resistance element NLR increases transiently, the commutation current decreases, so that the main circuit current l. decreases. This reduced main circuit current j. is finally cut off by the disconnector DS.
このようにこの発明は、磁界Ｈの発生方向が電極軸（イ
）−（イ）方向に対して直角方向であるために、アーク
・１４０発生方向は電極軸（イ）−（イ）方向でよいの
で、従来のように可動電極８内を流れる電流の方向を変
える構造にする必要はなく電極が単純構造となる。また
、固定電極７の内側を有効に利用し磁石１２を内部配設
できる構造であるので、小さなスペースで極めて強い磁
界を発生させろことが可能とがる。さらに磁界発生のコ
イル励磁が不要でかつコイルの銅損がない。In this way, in this invention, since the direction in which the magnetic field H is generated is perpendicular to the electrode axis (A)-(A) direction, the direction in which the arc 140 is generated is in the electrode axis (A)-(A) direction. Therefore, there is no need for a structure that changes the direction of the current flowing in the movable electrode 8 as in the conventional case, and the electrode has a simple structure. Furthermore, since the structure is such that the magnet 12 can be disposed inside the fixed electrode 7 by effectively utilizing the inside thereof, it is possible to generate an extremely strong magnetic field in a small space. Furthermore, there is no need to excite the coil to generate a magnetic field, and there is no copper loss in the coil.
なお、上記実施例では磁界Ｈな発生させるのに永久磁石
１１．１２を設けたものを示したが、これに限定される
ことなく、いずれか一方が永久磁石でｈ℃・磁性材料で
あってもよい。In addition, in the above embodiment, permanent magnets 11 and 12 were provided to generate the magnetic field H, but the present invention is not limited to this, and either one of them may be a permanent magnet and be made of h°C magnetic material. Good too.
以北のよう例、この発明によれば、電極を単純化でき、
才だ小さなスペースで極めて強い磁界を発生でき、しか
もコイルの励磁が不要でコイルの銅損がない等の効果が
ある。For example, according to this invention, the electrode can be simplified,
It is possible to generate an extremely strong magnetic field in a very small space, and it also has advantages such as no coil excitation and no copper loss in the coil.
第１図は従来のスパイラルアーク方式の転流形直流しゃ
断器、第２図はこの発明の一実施例の閉極状態の縦断面
図、第３図（ａ）は第２図のＡ−Ａ線断面図、第３図（
ｂ）は第２図のＢ−Ｂ線縦断面図、第４図は同開極状態
の縦断面図、第５図は同要部斜視図、第６図はアークの
状態説明図、第７図はアーク電圧の状態を示すグラフ、
第８図はこの発明を適用した商略図を示す。
１．７・・・固定電極、２，８・・・可動電極、４，９
・・・絶縁体、ＩＩ、１２・・・磁界発生体。
なお、図中同一符号は同−又は相当部分を示す。
菟 ｆ 図
弗 ２ 図
第 ３ 図
弗 ５ 図
第 ６ 図
図 第 β 図Fig. 1 is a conventional spiral arc type commutating DC breaker, Fig. 2 is a vertical cross-sectional view of an embodiment of the present invention in a closed state, and Fig. 3(a) is a line A-A in Fig. 2. Line sectional view, Figure 3 (
b) is a vertical cross-sectional view taken along the line B-B in Fig. 2, Fig. 4 is a longitudinal cross-sectional view of the same in the open state, Fig. 5 is a perspective view of the same essential parts, Fig. 6 is an explanatory diagram of the state of the arc, and Fig. 7 The figure is a graph showing the state of arc voltage,
FIG. 8 shows a commercial diagram to which this invention is applied. 1.7...Fixed electrode, 2,8...Movable electrode, 4,9
... Insulator, II, 12... Magnetic field generator. Note that the same reference numerals in the figures indicate the same or equivalent parts.菟 f Figure 2 Figure 3 Figure 5 Figure 6 Figure β Figure
Claims (3)
接触している円筒状の可動電極と、この可動電極および
上記固定電極の内側に配置された絶縁体と、上記固定電
極の内側および外側に配置され、電極軸に対して直角方
向で、かつ該固定電極および該可動電極間に発生するア
ークと直角に交差する磁界を発生させることによって、
該絶縁体の外周に該アークをスパイラル状に引伸ばす磁
界発生体とを備えたスパイラルアーク方式の転流形高圧
直流しゃ断器。(1) A cylindrical fixed electrode, a cylindrical movable electrode that is in slidable contact with the fixed electrode, an insulator disposed inside the movable electrode and the fixed electrode, and a cylindrical movable electrode that is in sliding contact with the fixed electrode. by generating magnetic fields arranged inside and outside, perpendicular to the electrode axis and intersecting at right angles to the arc generated between the fixed electrode and the movable electrode;
A commutating type high-voltage DC breaker of a spiral arc type, comprising a magnetic field generating body extending the arc in a spiral shape around the outer periphery of the insulator.
体を永久磁石としたことを特徴とする特許請求の範囲第
１項記載のスパイラルアーク方式の転流形高圧直流しゃ
断器。(2) The spiral arc type commutating high voltage DC breaker according to claim 1, wherein the magnetic field generators arranged inside and outside the fixed electrode are permanent magnets.
磁性材料としたことを特徴とする特許請求の範囲第１項
記載のスパイラルアーク方式の転流形高圧直流しゃ断器
。(3) A spiral arc type commutating high voltage DC breaker according to claim 1, characterized in that one of the magnetic field generators is a permanent magnet and the other is a magnetic material.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8188283A JPS59205118A (en) | 1983-05-09 | 1983-05-09 | Spiral arc type commutation type high voltage dc breaker |
| DE8484104808T DE3474081D1 (en) | 1983-05-09 | 1984-04-28 | Circuit breaker of spiral arc type |
| EP84104808A EP0125553B1 (en) | 1983-05-09 | 1984-04-28 | Circuit breaker of spiral arc type |
| CA000453698A CA1249003A (en) | 1983-05-09 | 1984-05-07 | Circuit breaker of spiral arc type |
| US06/608,160 US4560848A (en) | 1983-05-09 | 1984-05-08 | Circuit breaker of spiral arc type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8188283A JPS59205118A (en) | 1983-05-09 | 1983-05-09 | Spiral arc type commutation type high voltage dc breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59205118A true JPS59205118A (en) | 1984-11-20 |
Family
ID=13758819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8188283A Pending JPS59205118A (en) | 1983-05-09 | 1983-05-09 | Spiral arc type commutation type high voltage dc breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59205118A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003005392A1 (en) * | 2001-06-29 | 2003-01-16 | Korea Atomic Energy Research Institute | Self bouncing arc switch |
| JP2007123058A (en) * | 2005-10-28 | 2007-05-17 | Nec Tokin Corp | Electrical contact switch |
-
1983
- 1983-05-09 JP JP8188283A patent/JPS59205118A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003005392A1 (en) * | 2001-06-29 | 2003-01-16 | Korea Atomic Energy Research Institute | Self bouncing arc switch |
| JP2007123058A (en) * | 2005-10-28 | 2007-05-17 | Nec Tokin Corp | Electrical contact switch |
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