JP2009301922A - Disconnector - Google Patents

Disconnector Download PDF

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Publication number
JP2009301922A
JP2009301922A JP2008156292A JP2008156292A JP2009301922A JP 2009301922 A JP2009301922 A JP 2009301922A JP 2008156292 A JP2008156292 A JP 2008156292A JP 2008156292 A JP2008156292 A JP 2008156292A JP 2009301922 A JP2009301922 A JP 2009301922A
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Prior art keywords
side electrode
fixed
electrode
movable blade
blade
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JP2008156292A
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JP5114305B2 (en
Inventor
Yoshiaki Seya
良明 瀬谷
Riki Fujisawa
力 藤沢
Yoshiaki Inami
義昭 井波
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Japan AE Power Systems Corp
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Japan AE Power Systems Corp
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Priority to JP2008156292A priority Critical patent/JP5114305B2/en
Priority to CN2009101478109A priority patent/CN101609762B/en
Priority to KR1020090052717A priority patent/KR20090130825A/en
Publication of JP2009301922A publication Critical patent/JP2009301922A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
    • 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
    • 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
    • H01H33/42—Driving mechanisms

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blade type disconnector of which inter-pole electric field can be relaxed between a fixed side electrode and a movable blade, for improved insulation performance and miniaturization. <P>SOLUTION: A pair of energizing conductors 10 and 10A is arranged to face each other in a metal vessel 1. A fixed side electrode 11 to which a contact piece 12 having an electrically contacting surface 13 is fitted is attached to the energizing conductor 10, and a movable blade 15 is rotatably attached to the energizing conductor 10A. A ground side electrode 16, to/from which the movable blade 15 contacts/separates, is provided near the fixed side electrode 11 in the metal vessel 1. In the electrically conducting surface 13 of the fixed side electrode 11, a curvature radius R1 on the inter-pole side of the movable blade 15 is set larger than a curvature radius R2 on the ground side facing the inside surface of the metal vessel 1, for asymmetrical formation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明はブレード形断路器に係り、特に可動ブレードにより固定側電極と接地側電極とを切り換える所謂３ポジション方式のブレード形断路器に関する。   The present invention relates to a blade-type disconnector, and more particularly to a so-called three-position blade-type disconnector that switches between a fixed electrode and a ground electrode by a movable blade.

通常、ガス絶縁開閉装置（以下「ＧＩＳ」と略称する。）は、遮断器や断路器や接地開閉器等の機器を有して構成する。ＧＩＳには、金属容器内に接地開閉器と断路器を一体に構成した接地開閉器付断路器が使用されることがある。   In general, a gas insulated switchgear (hereinafter abbreviated as “GIS”) includes devices such as a circuit breaker, a disconnect switch, and a ground switch. In GIS, a disconnecting switch with a grounding switch in which a grounding switch and a disconnecting switch are integrally formed in a metal container may be used.

接地開閉器付断路器としては、可動側電極となる可動ブレードを用いるものがある（特許文献１参照）。この可動ブレードは、一方の通電導体に可動側電極となるを回転可能に取り付けており、また可動側と対向配置される他方の通電導体に固定側電極を取り付け、可動ブレードと接離するようにしている。   As a disconnecting switch with a grounding switch, there is one using a movable blade serving as a movable electrode (see Patent Document 1). This movable blade is rotatably attached to one energizing conductor to be a movable side electrode, and a fixed side electrode is attached to the other energizing conductor arranged opposite to the movable side so as to be in contact with and away from the movable blade. ing.

その上、金属容器内の固定側電極の近傍に接地側電極を備え、固定側電極から切離された可動ブレードが、接地側電極と接離するようにし、主回路となる通電導体間の開閉或いは接地を行わせる、所謂３ポジション方式の構成として使用される。   In addition, a ground side electrode is provided in the vicinity of the fixed side electrode in the metal container, and the movable blade separated from the fixed side electrode is brought into contact with and separated from the ground side electrode, thereby opening and closing between the current-carrying conductors serving as the main circuit. Alternatively, it is used as a so-called three-position configuration in which grounding is performed.

この種の３ポジション方式のブレード形断路器は、例えば図４に示すように通電導体１０の端面に、平坦な電接面１３を有する接触子片１２をボルト１４等で固着して固定側電極１１を構成している。そして、可動ブレード（図示せず）の先端が、接触子片１１の電接面１２と接離する。   For example, as shown in FIG. 4, this type of three-position type blade disconnector is configured such that a contact piece 12 having a flat electric contact surface 13 is fixed to an end face of an electric conductor 10 with a bolt 14 or the like. 11 is constituted. Then, the tip of the movable blade (not shown) comes in contact with and separates from the electrical contact surface 12 of the contact piece 11.

一般に、固定側電極１１の接触子片１２に設ける電接面１３は、可動ブレードが接離する極間側の面の曲率半径Ｒ１と、金属容器の内壁面に対向する接地側の面の曲率半径Ｒ２とは、電界集中を避けるため、双方とも同一の曲率半径として形成している。   In general, the electrical contact surface 13 provided on the contact piece 12 of the fixed electrode 11 includes a radius of curvature R1 of the surface on the side of the contact between which the movable blade contacts and separates, and a curvature of the surface on the ground side facing the inner wall surface of the metal container. The radius R2 is formed to have the same radius of curvature in order to avoid electric field concentration.

特開２００６−２１６４４８号公報JP 2006-216448 A

上記したブレード形断路器では、固定側電極と接地側電極の双方や、これら電極と切り換えて接離する可動ブレードが、金属容器内に近接して配置される構造となっている。しかも、従来では接触子片１２の電接面１３における極間側の面の曲率半径Ｒ１と、通電導体１０の直径ΦＤとの比（Ｒ１／ΦＤ）で検討すると、図５に示す如く０.３３程度で使用していることになっていた。このため、固定側電極と可動ブレードとの極間に発生する電界値が、高くなってしまっていた。   The blade-type disconnector described above has a structure in which both the fixed-side electrode and the ground-side electrode, and the movable blade that is switched to and away from these electrodes are arranged close to each other in the metal container. Moreover, in the past, when the ratio (R1 / ΦD) of the radius of curvature R1 of the contact-side surface 13 of the contact piece 12 to the diameter ΦD of the current-carrying conductor 10 is studied, as shown in FIG. It was supposed to be used at about 33. For this reason, the electric field value generated between the electrodes on the fixed side electrode and the movable blade has been increased.

このように、固定側電極と可動ブレードとの極間の電界値が高くなってしまって、電界を十分に緩和できない場合は、絶縁性能が著しく低下しまうから、ブレード形断路器の耐電圧性能が悪化さてしまう恐れがある。   In this way, if the electric field value between the fixed electrode and the movable blade becomes high, and the electric field cannot be sufficiently relaxed, the insulation performance will be significantly reduced. There is a risk of getting worse.

ブレード形断路器の耐電圧性能の悪化を防ぐには、金属容器や固定側電極と可動ブレードとの極間の寸法を含め、全体の寸法を大きくせねばならず、小型化が難しくなる問題があった。   In order to prevent the withstand voltage performance of the blade-type disconnector from deteriorating, the overall dimensions, including the dimensions between the metal container or the fixed electrode and the movable blade, must be increased, which makes it difficult to reduce the size. there were.

本発明の目的は、固定側電極と可動ブレードとの極間の電界緩和を図り、絶縁性能を向上でき、小型化できるブレード形断路器を提供することにある。   An object of the present invention is to provide a blade type disconnector that can reduce the electric field between the electrodes of the fixed side electrode and the movable blade, can improve the insulation performance, and can be downsized.

本発明のブレード形断路器は、金属容器内に対向配置する一対の通電導体を有し、一方の前記通電導体に取り付ける定側電極と、他方の前記通電導体に回転可能に取り付けて前記固定側電極の電接面と接離する可動ブレードと、前記固定側電極の近傍に設けられて前記可動ブレードが接離する接地側電極とを備えて構成する際に、前記固定側電極の電接面は、極間側の曲率半径を対地側の曲率半径より大きくして非対称に形成したことを特徴としている。   The blade-type disconnector of the present invention has a pair of current-carrying conductors arranged opposite to each other in a metal container, a fixed-side electrode attached to one of the current-carrying conductors, and a fixed-side electrode rotatably attached to the other current-carrying conductor. When comprising a movable blade that is in contact with and away from the electrode contact surface of the electrode, and a ground side electrode that is provided in the vicinity of the fixed side electrode and that is in contact with and away from the movable blade, the electrode contact surface of the fixed side electrode Is characterized in that the radius of curvature on the inter-polar side is made larger than the radius of curvature on the ground side and is formed asymmetric.

望ましくは、前記固定側電極の電接面における極間側面の曲率半径と、前記固定側電極の通電導体の直径との比が、０.７５から１.１の範囲としたことを特徴としている。   Preferably, the ratio of the radius of curvature of the inter-electrode side surface on the electrode contact surface of the fixed side electrode and the diameter of the conductive conductor of the fixed side electrode is in the range of 0.75 to 1.1. .

本発明の如く構成すれば、ブレード形断路器の固定側電極は、極間側及び対地側の電接面の曲率半径を変えて非対称にしたので、固定側電極と可動ブレードとの極間の電界をより緩和できるから、絶縁性能が向上したブレード形断路器を小型化して製作することができる。   According to the present invention, the fixed side electrode of the blade type disconnector is made asymmetric by changing the radius of curvature of the contact surface between the pole side and the ground side, so that the gap between the poles of the fixed side electrode and the movable blade is not changed. Since the electric field can be further relaxed, a blade-type disconnector with improved insulation performance can be made smaller.

また、固定側電極は対地側に電極を伸ばした形状になるため、断路器の極間に対して対地側の絶縁を低下させて絶縁協調を図ることができるし、固定側電極の電接面を従来に比べて大きくできるため、通電性能も向上できる利点がある。   In addition, since the fixed electrode has a shape that extends to the ground side, the insulation on the ground side can be reduced by reducing the insulation on the ground side with respect to the gap between the disconnectors, and the electric contact surface of the fixed side electrode Therefore, there is an advantage that the energization performance can be improved.

本発明のブレード形断路器は、金属容器内に対向配置する一対の通電導体を有し、一方の通電導体に取り付ける固定側電極と、他方の通電導体に回転可能に取り付けて固定側電極の電接面と接離する可動ブレードと、固定側電極の近傍に設けられて可動ブレードが接離する接地側電極とを備えている。そして、固定側電極の電接面は、極間側の曲率半径を対地側の曲率半径より大きくして非対称に形成している。   The blade-type disconnector of the present invention has a pair of current-carrying conductors arranged opposite to each other in a metal container. The blade-side disconnector is fixedly attached to one current-carrying conductor and is rotatably attached to the other current-carrying conductor. A movable blade that is in contact with and away from the contact surface, and a ground side electrode that is provided in the vicinity of the fixed electrode and that is in contact with and away from the movable blade. The electric contact surface of the fixed side electrode is formed asymmetrically with the curvature radius on the inter-electrode side being larger than the curvature radius on the ground side.

以下、本発明を適用したブレード形断路器の実施例について、従来と同一部分を同符号で示す図１から図３を用いて説明する。 図１に示すブレード形断路器は、絶縁ガスを封入或いは大気中とする金属容器１内に、一対の通電導体１０、１０Ａを対向するように配置している。   Hereinafter, an embodiment of a blade type disconnector to which the present invention is applied will be described with reference to FIGS. The blade type disconnector shown in FIG. 1 is arranged so that a pair of current-carrying conductors 10 and 10A are opposed to each other in a metal container 1 in which an insulating gas is enclosed or in the atmosphere.

この一方の通電導体１０の端面には、図２に示す如くボルト１４等により平坦な電接面１３を有する接触子片１２を固着して成る固定側電極１１を設けおり、他方の通電導体１０Ａの端面には、可動ブレード１５を回転可能に設けている。   As shown in FIG. 2, a fixed-side electrode 11 formed by fixing a contact piece 12 having a flat electric contact surface 13 with a bolt 14 or the like is provided on the end face of the one electric conductor 10, and the other electric conductor 10A is provided. The movable blade 15 is rotatably provided on the end face of the.

可動ブレード１５は、外部から操作する回転軸１７に固着された回転レバー１８と操作ロッド１９を介在させて連結し、回転軸１７の時計方向及び反時計方向の回転に伴って固定側電極１１と接離する。   The movable blade 15 is connected via a rotating lever 18 fixed to a rotating shaft 17 operated from outside and an operating rod 19, and is connected to the fixed electrode 11 as the rotating shaft 17 rotates clockwise and counterclockwise. Connect and separate.

また、金属容器１の内部には、固定側電極１１の近傍に接地側電極１６を突出させて設けており、固定側電極１１から切離された可動ブレード１５を、接地側電極１６と接続することにより、通電導体１０Ａが接地される。   Further, a ground side electrode 16 is provided in the metal container 1 so as to protrude in the vicinity of the fixed side electrode 11, and the movable blade 15 separated from the fixed side electrode 11 is connected to the ground side electrode 16. As a result, the current-carrying conductor 10A is grounded.

このブレード形断路器では、固定側電極１１から可動ブレード１５を切離す際には、図３（ａ）に示す固定側電極１１へ投入して接続した位置から、図３（ｂ）に示す切り位置、図３（ｃ）に示す接地側電極１６と接続する接地位置と、可動ブレード１５を回転移動させる。そして、固定側電極１１に可動ブレード１５を接続する際には、逆に図３（ｃ）から図３（ａ）に示す如く可動ブレード１５を回転移動させる。   In this blade-type disconnector, when the movable blade 15 is disconnected from the fixed side electrode 11, the position shown in FIG. 3B is cut from the position where the movable blade 15 is inserted and connected to the fixed side electrode 11 shown in FIG. The movable blade 15 is rotated and moved to the position, the ground position connected to the ground-side electrode 16 shown in FIG. When the movable blade 15 is connected to the fixed electrode 11, the movable blade 15 is rotated and moved as shown in FIGS. 3C to 3A.

接地側電極１６と接離する固定側電極１１は、本発明により接触子片１２に設ける電接面１３に、特別の工夫を施している。図２に示すように接触子片１２に形成する電接面１３は、可動ブレード１５が回転して接離する極間側となる面の曲率半径Ｒ１と、金属容器１の内面と対向する対地側の面の曲率半径Ｒ２とを、異ならせている。   The fixed-side electrode 11 that is in contact with and away from the ground-side electrode 16 is specially devised on the electrical contact surface 13 provided on the contact piece 12 according to the present invention. As shown in FIG. 2, the contact surface 13 formed on the contact piece 12 has a radius of curvature R <b> 1 of the surface on the side of the contact between which the movable blade 15 rotates and contacts and the ground facing the inner surface of the metal container 1. The curvature radius R2 of the side surface is made different.

電接面１３における極間側の面の曲率半径Ｒ１は、対地側の面の曲率半径Ｒ２より大きくし、可動ブレード１５と接触する電接面１３が、図２の上下で非対称になるように形成している。より具体的には、電接面１３における極間側の面の曲率半径Ｒ１と、固定側電極１１を設ける通電導体１０の直径ΦＤとの比（Ｒ１／ΦＤ）でいえば、０.７５から１.１の範囲になるように形成して使用する。   The curvature radius R1 of the surface on the interpolar side of the electrical contact surface 13 is larger than the curvature radius R2 of the surface on the ground side so that the electrical contact surface 13 in contact with the movable blade 15 is asymmetrical in the vertical direction of FIG. Forming. More specifically, the ratio (R1 / ΦD) of the radius of curvature R1 of the interelectrode side surface of the electrical contact surface 13 to the diameter ΦD of the conductive conductor 10 on which the fixed electrode 11 is provided is from 0.75. It is formed so as to be in the range of 1.1.

上記のように、電接面１３の極間側面の曲率半径Ｒ１と、固定側電極１１を設ける通電導体１０の直径ΦＤとの比（Ｒ１／ΦＤ）を、図５に示す如く０.７５から１.１の範囲に形成して使用すれば、固定側電極１１と可動ブレード１６との極間に発生する電界値が、次第に低下する。このため、従来のように比（Ｒ１／ΦＤ）が０.３３程度で使用していたものに比べ、本発明の如く０.７５から１.１の範囲で使用する場合、最大で両者間の差Ｂの分だけ、極間に発生する電界値を低くすることができる。したがって、ブレード形断路器の絶縁性能を向上できるから、小型化しても絶縁性能を損なう恐れもなくて製作することができる。   As described above, the ratio (R1 / ΦD) between the radius of curvature R1 of the interelectrode side surface of the electrode contact surface 13 and the diameter ΦD of the conducting conductor 10 on which the fixed electrode 11 is provided is from 0.75 as shown in FIG. If it is used within the range of 1.1, the electric field value generated between the fixed electrode 11 and the movable blade 16 gradually decreases. For this reason, when used in the range of 0.75 to 1.1 as in the present invention, the ratio (R1 / ΦD) is about 0.33 as in the prior art. The electric field value generated between the poles can be lowered by the difference B. Therefore, since the insulation performance of the blade-type disconnector can be improved, it can be manufactured without the risk of impairing the insulation performance even if the size is reduced.

本発明の一実施例であるブレード形断路器を示す概略縦断面図である。It is a schematic longitudinal cross-sectional view which shows the blade type disconnector which is one Example of this invention. 図１のブレード形断路器の固定側電極を拡大して示す側面図である。It is a side view which expands and shows the stationary side electrode of the blade type disconnector of FIG. （ａ）から（ｃ）は本発明のブレード形断路器の動作過程を示す概略縦断面図である。(A)-(c) is a schematic longitudinal cross-sectional view which shows the operation | movement process of the blade type disconnector of this invention. 従来のブレード形断路器の固定側電極を拡大して示す側面図である。It is a side view which expands and shows the stationary side electrode of the conventional blade type disconnector. 固定側電極の電接面１３における極間側の面の曲率半径と通電導体の直径との比と電界値との関係を示す特性図である。It is a characteristic view showing the relationship between the ratio of the radius of curvature of the surface between the electrodes on the electrode contact surface 13 of the fixed electrode and the diameter of the conducting conductor and the electric field value.

符号の説明Explanation of symbols

１…金属容器、１０、１０Ａ…通電導体、１１…固定側電極、１２…接触子片、１３…電接面、１５…可動ブレード、１６…対地側電極、Ｒ１、Ｒ２…曲率半径。 DESCRIPTION OF SYMBOLS 1 ... Metal container 10, 10A ... Current-carrying conductor, 11 ... Fixed side electrode, 12 ... Contact piece, 13 ... Electric contact surface, 15 ... Movable blade, 16 ... Ground side electrode, R1, R2 ... Radius of curvature.

Claims (2)

金属容器内に対向配置する一対の通電導体を有し、一方の前記通電導体に取り付ける固定側電極と、他方の前記通電導体に回転可能に取り付けて前記固定側電極の電接面と接離する可動ブレードと、前記固定側電極の近傍に設けられて前記可動ブレードが接離する接地側電極とを備えたブレード形断路器において、前記固定側電極の電接面は、極間側の曲率半径を対地側の曲率半径より大きくして非対称に形成したことを特徴とするブレード形断路器。   A pair of current-carrying conductors facing each other in a metal container, a fixed-side electrode attached to one of the current-carrying conductors, and rotatably attached to the other current-carrying conductor to be in contact with and away from an electric contact surface of the fixed-side electrode In a blade-type disconnector provided with a movable blade and a ground-side electrode provided in the vicinity of the fixed-side electrode and contacted and separated by the movable blade, the electric contact surface of the fixed-side electrode has a radius of curvature between the poles A blade-type disconnector characterized in that it is formed asymmetrically larger than the radius of curvature on the ground side. 請求項１において、前記固定側電極の電接面における極間側面の曲率半径と、前記固定側電極の通電導体の直径との比が、０.７５から１.１の範囲としたことを特徴とするブレード形断路器。   The ratio of the radius of curvature of the inter-electrode side surface of the electrode contact surface of the fixed side electrode to the diameter of the current-carrying conductor of the fixed side electrode is in the range of 0.75 to 1.1. Blade type disconnector.
JP2008156292A 2008-06-16 2008-06-16 Disconnector Active JP5114305B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008156292A JP5114305B2 (en) 2008-06-16 2008-06-16 Disconnector
CN2009101478109A CN101609762B (en) 2008-06-16 2009-06-12 Blade-shaped circuit breaker
KR1020090052717A KR20090130825A (en) 2008-06-16 2009-06-15 Blade type disconnector

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KR101605134B1 (en) 2014-07-01 2016-03-22 현대중공업 주식회사 Disconnecting switch and earthing switch for gas insulated switchgear
KR20220093412A (en) * 2020-12-28 2022-07-05 일진전기 주식회사 Disconnecting switch and earthing switch for gas insulated switchgear

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Publication number Priority date Publication date Assignee Title
KR101605134B1 (en) 2014-07-01 2016-03-22 현대중공업 주식회사 Disconnecting switch and earthing switch for gas insulated switchgear
US9892872B2 (en) 2014-07-01 2018-02-13 Hyundai Electric & Energy Systems Co., Ltd. Disconnecting switch and earthing switch for gas insulated switchgear
KR20220093412A (en) * 2020-12-28 2022-07-05 일진전기 주식회사 Disconnecting switch and earthing switch for gas insulated switchgear
KR102506011B1 (en) * 2020-12-28 2023-03-07 일진전기 주식회사 Disconnecting switch and earthing switch for gas insulated switchgear

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KR20090130825A (en) 2009-12-24
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CN101609762B (en) 2012-11-28

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