JP2002075145A - Gas-blast circuit breaker with suppressing apparatus for exciting inrush current - Google Patents

Gas-blast circuit breaker with suppressing apparatus for exciting inrush current

Info

Publication number
JP2002075145A
JP2002075145A JP2000266438A JP2000266438A JP2002075145A JP 2002075145 A JP2002075145 A JP 2002075145A JP 2000266438 A JP2000266438 A JP 2000266438A JP 2000266438 A JP2000266438 A JP 2000266438A JP 2002075145 A JP2002075145 A JP 2002075145A
Authority
JP
Japan
Prior art keywords
circuit breaker
gas
tank
gas circuit
fixed
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
Application number
JP2000266438A
Other languages
Japanese (ja)
Inventor
Yasuhide Takeda
康秀 武田
Kunio Hirasawa
邦夫 平澤
Daisuke Ebisawa
大輔 海老澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2000266438A priority Critical patent/JP2002075145A/en
Publication of JP2002075145A publication Critical patent/JP2002075145A/en
Pending legal-status Critical Current

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  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a gas-blast circuit breaker having a suppressing apparatus for an exciting inrush current, which reduces installation space and cost. SOLUTION: The first gas-blast circuit breakers 1a, 1b comprise grounded tanks which seal insulating gas, fixed and movable contacts disposed in the tanks, and bushings mounted to the tanks and connected to the fixed and the movable contacts. The second gas circuit breaker 1c comprises the grounded tank sealing the insulating gas, the fixed and the movable contacts disposed in the tank, the bushings mounted to the tank and connected to the fixed and the movable contacts. Either of the fixed or the movable contacts is connected to the bushing via an inrush current limiting resistor, and a transformer 15 is supplied with electric power via a parallel circuit of the first and the second gas circuit breakers.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は励磁突入電流抑制装
置付きガス遮断器にかかり、特に取付スペースが小さく
かつ低コストの励磁突入電流抑制装置付きガス遮断器に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas circuit breaker having an exciting rush current suppressing device, and more particularly to a gas circuit breaker having an exciting rush current suppressing device having a small mounting space and a low cost.

【０００２】[0002]

【従来の技術】実開平４−１１２４３４号公報には、遮
断部と、投入接点および抵抗体の直列接続体とを並列接
続するとともに前記遮断部と直列体をタンク内に収納し
た投入抵抗付き遮断器が示されている。この遮断器は前
記抵抗体の抵抗値と投入接点の前記遮断部に対する先行
投入時間を選択することによって励磁突入電流を抑制す
ることができる。2. Description of the Related Art Japanese Unexamined Utility Model Publication No. 4-112434 discloses a shut-off unit having a shut-off unit and a series connection of a closing contact and a resistor connected in parallel, and a shut-off unit with a shut-off resistor in which the shut-off unit and the series unit are housed in a tank. A vessel is shown. This circuit breaker can suppress the inrush current by selecting the resistance value of the resistor and the advance closing time of the closing contact with respect to the breaking section.

【０００３】[0003]

【発明が解決しようとする課題】前記公報に示される技
術は、タンク内に遮断部、投入接点および抵抗体をそれ
ぞれ組み込むため、前記タンクが大きくなりその形状も
複雑となる。さらに取付スペースが拡大し、コストも上
昇する。本発明は前記問題点に鑑みてなされたもので、
取付スペースが小さくかつ低コストの励磁突入電流抑制
装置付きガス遮断器を提供する。In the technique disclosed in the above-mentioned publication, since a breaking part, a closing contact, and a resistor are respectively incorporated in a tank, the tank becomes large and its shape becomes complicated. Further, the mounting space is increased, and the cost is also increased. The present invention has been made in view of the above problems,
Provided is a gas circuit breaker with an inrush current suppression device with a small mounting space and low cost.

【０００４】[0004]

【課題を解決するための手段】本発明は、上記の課題を
解決するために次のような手段を採用した。The present invention employs the following means in order to solve the above-mentioned problems.

【０００５】絶縁性ガスを封入した接地タンク、該タン
ク内に配置した固定接点および可動接点並びに前記タン
クに取り付けるとともに前記固定接点および可動接点に
それぞれ接続したブッシングとからなる第１のガス遮断
器と、絶縁性ガスを封入した接地タンク、該タンク内に
配置した固定接点および可動接点並びに前記タンクに取
り付けるとともに前記固定接点および可動接点のいずれ
か一方に突入電流制限抵抗を介してそれぞれ接続したブ
ッシングとからなる第２のガス遮断器とからなり、前記
第１のガス遮断器および第２のガス遮断器の並列回路を
介して変圧器１５に電源を供給する。A first gas circuit breaker comprising: a grounding tank filled with an insulating gas; fixed and movable contacts disposed in the tank; and a bushing attached to the tank and connected to the fixed and movable contacts, respectively. A grounding tank filled with an insulating gas, a fixed contact and a movable contact arranged in the tank, and a bushing attached to the tank and connected to one of the fixed contact and the movable contact via an inrush current limiting resistor. , And supplies power to the transformer 15 via a parallel circuit of the first gas circuit breaker and the second gas circuit breaker.

【０００６】[0006]

【発明の実施の形態】以下に本発明の実施形態を図１な
いし図４を用いて説明する。図１は本発明の実施形態に
かかる励磁突入電流抑制装置付きガス遮断器の回路図、
図２は上面図、図３は側面図、図４は抵抗体付き遮断器
の断面図である。これらの図において、１ａ、１ｂは主
遮断器、２は抵抗体付き遮断器である。これらの遮断器
はそれぞれＳＦ６等の絶縁性ガスを封入した接地タンク
を備え、該タンク内に遮断部を封入している。３は主遮
断器、抵抗体付き遮断器および遮断器の操作器４を載置
した架台、４は操作器であり、主遮断器および抵抗体付
き遮断器をリンクを介して共通に操作することができ
る。５は主遮断器および抵抗体付き遮断器に取り付けた
ブッシング、６はブッシングの上部端子、７は主遮断器
１ｂと抵抗体付き遮断器２を並列に接続するための接続
線、８は抵抗体付き遮断器の固定接点、９は抵抗体付き
遮断器の可動接点、１０は前記固定接点と可動接点間の
接点距離、１１は励磁突入電流抑制用の抵抗体、１２は
可動接点を操作する操作ロッド、１３ａ、１３ｂは主遮
断器の接点、１３ｃは抵抗付き遮断器の投入接点、１４
は絶縁性ガスを封入した接地タンク、１５は電車線路に
電力を供給するき電用等に用いる単相変圧器であり、前
記主遮断器および抵抗体付き遮断器を介して電源に接続
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a circuit diagram of a gas circuit breaker with an inrush current suppression device according to an embodiment of the present invention,
2 is a top view, FIG. 3 is a side view, and FIG. 4 is a sectional view of a circuit breaker with a resistor. In these figures, 1a and 1b are main circuit breakers, and 2 is a circuit breaker with a resistor. Each of these circuit breakers has a ground tank in which an insulating gas such as SF6 is sealed, and a shut-off portion is sealed in the tank. 3 is a stand on which the main circuit breaker, circuit breaker with resistor, and circuit breaker operating device 4 are mounted, and 4 is an operating device for operating the main circuit breaker and the circuit breaker with resistor in common via a link. Can be. 5 is a bushing attached to the main circuit breaker and the circuit breaker with a resistor, 6 is an upper terminal of the bushing, 7 is a connection line for connecting the main circuit breaker 1b and the circuit breaker with a resistor 2 in parallel, and 8 is a resistor. 9 is a movable contact of the circuit breaker with a resistor, 10 is a contact distance between the fixed contact and the movable contact, 11 is a resistor for suppressing the inrush current of excitation, and 12 is an operation for operating the movable contact. Rods, 13a and 13b are contacts of the main circuit breaker, 13c is a closing contact of the circuit breaker with resistance, 14
Is a grounding tank filled with an insulating gas, and 15 is a single-phase transformer used for feeding power to a train line, and is connected to a power source via the main circuit breaker and a circuit breaker with a resistor.

【０００７】図１ないし図３に示すように、主遮断器１
ａおよび１ｂはそれぞれ前記単相変圧器１５の両端子と
図示しない交流電源間に接続する。また、前記主遮断器
のうちのいずれか一方の主遮断器と並列に抵抗体付き遮
断器２を接続する。主遮断器１ａおよび１ｂおよび抵抗
体付き遮断器２の遮断部を収容した接地タンク３台を架
台３上に載置し、前記各遮断器の可動接点を操作器４に
より共通に駆動する。As shown in FIGS. 1 to 3, the main circuit breaker 1
a and 1b are respectively connected between both terminals of the single-phase transformer 15 and an AC power supply (not shown). A circuit breaker with a resistor 2 is connected in parallel with one of the main circuit breakers. Three grounding tanks accommodating the main circuit breakers 1a and 1b and the breaker of the circuit breaker with resistor 2 are mounted on the gantry 3, and the movable contacts of the respective circuit breakers are commonly driven by the operating device 4.

【０００８】主遮断器１ａおよび１ｂと、抵抗体付き遮
断器２はブッシング５を介して電源および単相変圧器１
５に接続する。また、主遮断器１ｂと抵抗体付き遮断器
２とは接続線７を介して並列接続する。The main circuit breakers 1a and 1b and the circuit breaker with resistor 2 are connected to the power supply and the single-phase transformer 1 via a bushing 5.
Connect to 5. The main circuit breaker 1b and the circuit breaker with resistor 2 are connected in parallel via the connection line 7.

【０００９】主遮断器１ａ、１ｂおよび抵抗体付き遮断
器２はほぼ同一の構成であるが、抵抗体付き遮断器２は
突入電流抑制用の抵抗体１１を固定接点側に備えてい
る。操作器４による遮断器投入動作の際に、抵抗体付き
遮断器２の投入接点１３ｃを遮断部接点１３ａおよび１
３ｂよりも早期（例えば１０ｍｓ以上）に接触させるた
めに、固定接点と可動接点間の接点距離を主遮断器１
ａ、１ｂのそれよりも短くし、ストローク量を短く設定
している。The main circuit breakers 1a and 1b and the circuit breaker with resistor 2 have substantially the same configuration, but the circuit breaker with resistor 2 has a resistor 11 for suppressing inrush current on the fixed contact side. At the time of the breaker closing operation by the operating device 4, the closing contact 13c of the breaker with resistor 2 is changed to the breaking portion contacts 13a and 1b.
3b, the contact distance between the fixed contact and the movable contact is set to be shorter than that of the main breaker 1 (for example, 10 ms or more).
The stroke length is set shorter than that of a and 1b, and the stroke amount is set shorter.

【００１０】以上説明したように、主遮断器１ａおよび
１ｂと抵抗体付き遮断器２を並置することにより、従来
の三相別タンク方式の遮断器とほぼ同じ面積に設置する
ことができる。また、抵抗体付き遮断器２の遮断性能は
主遮断器に比して低減することが可能であり、抵抗体付
き遮断器２の封入ガス圧を低減することができ、例えば
常圧の大気とすることができる。また、主遮断器１ａ、
１ｂおよび抵抗体付き遮断器２はほぼ同一の構成である
ため、３個の遮断器を並置した通常の三相回路用遮断器
を流用し、そのうちの一相を抵抗付き遮断器とすること
ができる。この場合、抵抗付き遮断器の投入時点はリン
ク機構により調整することができる。As described above, by arranging the main circuit breakers 1a and 1b and the circuit breaker 2 with a resistor in parallel, the circuit breakers can be installed in substantially the same area as the conventional three-phase tank type circuit breaker. Further, the breaking performance of the circuit breaker with resistor 2 can be reduced as compared with the main circuit breaker, and the gas pressure of the circuit breaker with resistor 2 can be reduced. can do. In addition, the main circuit breaker 1a,
Since the circuit breaker 1b and the circuit breaker with resistor 2 have substantially the same configuration, a normal circuit breaker for a three-phase circuit in which three circuit breakers are juxtaposed may be used, and one of them may be a circuit breaker with a resistor. it can. In this case, the closing time of the circuit breaker with the resistor can be adjusted by the link mechanism.

【００１１】[0011]

【発明の効果】以上説明したように本発明によれば、取
付スペースが小さくかつ低コストの励磁突入電流抑制装
置付きガス遮断器を提供することができる。As described above, according to the present invention, it is possible to provide a gas circuit breaker with an inrush current suppressing device with a small mounting space and a low cost.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施形態にかかる励磁突入電流抑制装
置付きガス遮断器の回路図図である。FIG. 1 is a circuit diagram of a gas circuit breaker with an inrush current suppression device according to an embodiment of the present invention.

【図２】励磁突入電流抑制装置付きガス遮断器の上面図
である。FIG. 2 is a top view of the gas circuit breaker with the excitation rush current suppressing device.

【図３】励磁突入電流抑制装置付きガス遮断器の側面図
である。FIG. 3 is a side view of a gas circuit breaker with an inrush current suppression device.

【図４】抵抗体遮断器の断面図である。FIG. 4 is a sectional view of a resistor circuit breaker.

【符号の説明】[Explanation of symbols]

１ａ，１ｂ 主遮断器 ２ 抵抗体付き遮断器 ３ 架台 ４ 操作器 ５ ブッシング ６ ブッシングの上部端子 ７ 接続線 ８ 固定接点 ９ 可動接点 １０ 接点距離 １１ 抵抗体励磁突入電流抑制用の抵抗体 １２ 操作ロッド １３ａ，１３ｂ 主遮断器の接点 １３ｃ 抵抗体付き遮断器の接点 １４ 接地タンク １５ 単相変圧器 DESCRIPTION OF SYMBOLS 1a, 1b Main circuit breaker 2 Circuit breaker with resistor 3 Frame 4 Operating device 5 Bushing 6 Upper terminal of bushing 7 Connection line 8 Fixed contact 9 Movable contact 10 Contact distance 11 Resistor for suppressing inrush current of resistor excitation 12 Operating rod 13a, 13b Contact of main breaker 13c Contact of breaker with resistor 14 Ground tank 15 Single-phase transformer

───────────────────────────────────────────────────── フロントページの続き (72)発明者 海老澤 大輔 茨城県日立市国分町一丁目１番１号 株式 会社日立製作所電機システム事業所内 Ｆターム(参考） 5G001 AA08 BB03 GG03 5G013 AA01 AA10 BA01 CA05 5G027 AA06 AA26 CA07 5G028 AA08 AA21 FB05 FC02  ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Daisuke Ebisawa 1-1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture F-term in Hitachi, Ltd. Electric System Works 5G001 AA08 BB03 GG03 5G013 AA01 AA10 BA01 CA05 5G027 AA06 AA26 CA07 5G028 AA08 AA21 FB05 FC02

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 絶縁性ガスを封入した接地タンク、該タ
ンク内に配置した固定接点および可動接点並びに前記タ
ンクに取り付けるとともに前記固定接点および可動接点
にそれぞれ接続したブッシングとからなる第１のガス遮
断器と、 絶縁性ガスを封入した接地タンク、該タンク内に配置し
た固定接点および可動接点並びに前記タンクに取り付け
るとともに前記固定接点および可動接点のいずれか一方
に突入電流制限抵抗を介してそれぞれ接続したブッシン
グとからなる第２のガス遮断器とからなり前記第１のガ
ス遮断器および第２のガス遮断器の並列回路を介して電
源を変圧器に供給することを特徴とする励磁突入電流抑
制装置付きガス遮断器。1. A first gas cutoff comprising a grounding tank filled with an insulating gas, fixed and movable contacts disposed in the tank, and a bushing attached to the tank and connected to the fixed and movable contacts, respectively. And a grounding tank filled with an insulating gas, fixed and movable contacts disposed in the tank, and attached to the tank and connected to one of the fixed and movable contacts via an inrush current limiting resistor. A second gas circuit breaker comprising a bushing; and a power supply is supplied to the transformer via a parallel circuit of the first gas circuit breaker and the second gas circuit breaker. With gas circuit breaker. 【請求項２】 請求項１の記載において、前記第２のガ
ス遮断器の封入ガス圧は前記第１のガス遮断器の封入ガ
ス圧より低いことを特徴とする励磁突入電流抑制装置付
きガス遮断器。2. The gas shut-off device according to claim 1, wherein the gas pressure of the second gas circuit breaker is lower than the gas pressure of the first gas circuit breaker. vessel. 【請求項３】 請求項１ないし請求項２の何れか１の記
載において、前記第２のガス遮断器の可動接点のストロ
ーク量は前記第１のガス遮断器の可動接点のストローク
量より短いことを特徴とする励磁突入電流抑制装置付き
ガス遮断器。3. The stroke amount of the movable contact of the second gas circuit breaker according to claim 1, wherein the stroke amount of the movable contact of the second gas circuit breaker is shorter than the stroke amount of the movable contact of the first gas circuit breaker. A gas circuit breaker with an inrush current suppression device. 【請求項４】 請求項１ないし請求項３の何れか１の記
載において、前記第２のガス遮断器の封入ガスは常圧の
大気であることを特徴とする励磁突入電流抑制装置付き
ガス遮断器。4. A gas shut-off device with an inrush current suppression device according to claim 1, wherein the gas filled in said second gas circuit breaker is atmospheric pressure at normal pressure. vessel. 【請求項５】 請求項１ないし請求項４の何れか１の記
載において、前記変圧器は電気鉄道用の単相変圧器であ
ることを特徴とする励磁突入電流抑制装置付きガス遮断
器。5. The gas circuit breaker according to claim 1, wherein the transformer is a single-phase transformer for an electric railway.
JP2000266438A 2000-09-04 2000-09-04 Gas-blast circuit breaker with suppressing apparatus for exciting inrush current Pending JP2002075145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000266438A JP2002075145A (en) 2000-09-04 2000-09-04 Gas-blast circuit breaker with suppressing apparatus for exciting inrush current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000266438A JP2002075145A (en) 2000-09-04 2000-09-04 Gas-blast circuit breaker with suppressing apparatus for exciting inrush current

Publications (1)

Publication Number Publication Date
JP2002075145A true JP2002075145A (en) 2002-03-15

Family

ID=18753524

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2002075145A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008065757A1 (en) 2006-11-29 2008-06-05 Kabushiki Kaisha Toshiba Apparatus and method for compressing exciting inrush current of transformer
JP2009177958A (en) * 2008-01-25 2009-08-06 Mitsubishi Electric Corp Switchgear with exciting rush current suppressor
WO2012023524A1 (en) 2010-08-20 2012-02-23 株式会社 東芝 Magnetizing inrush current suppression device
WO2012026423A1 (en) 2010-08-23 2012-03-01 株式会社 東芝 Exciting inrush current suppression apparatus
JP2012069351A (en) * 2010-09-22 2012-04-05 Toshiba Corp Rush current suppressor
US8217536B2 (en) 2008-06-20 2012-07-10 Kabushiki Kaisha Toshiba Magnetizing inrush current suppression device for transformer and control method of same
WO2013015356A1 (en) 2011-07-27 2013-01-31 株式会社 東芝 Magnetizing inrush current suppression device
JP2013062196A (en) * 2011-09-14 2013-04-04 Toshiba Corp Magnetizing inrush current suppressor
US8564159B2 (en) 2010-01-28 2013-10-22 Kabushiki Kaisha Toshiba Transformer inrush current suppression apparatus
JP2013258297A (en) * 2012-06-13 2013-12-26 Hitachi Ltd Resistor, method of assembling the same, and switchgear
CN104242136A (en) * 2014-09-09 2014-12-24 李品德 Power distribution device set with inrush current inhibition function and control method of power distribution device set
US9291686B2 (en) 2010-07-26 2016-03-22 Kabushiki Kaisha Toshiba Method of estimating the residual magnetic flux of transformer and residual magnetic flux estimation device
US9425615B2 (en) 2011-03-17 2016-08-23 Kabushiki Kaisha Toshiba Inrush current suppression apparatus

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US8310106B2 (en) 2006-11-29 2012-11-13 Kabushiki Kaisha Toshiba Magnetizing inrush current suppression device and method for transformer
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US9197057B2 (en) 2010-08-23 2015-11-24 Kabushiki Kaisha Toshiba Magnetizing inrush current suppression apparatus
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