WO2019202681A1 - Ground switch - Google Patents
Ground switch Download PDFInfo
- Publication number
- WO2019202681A1 WO2019202681A1 PCT/JP2018/015984 JP2018015984W WO2019202681A1 WO 2019202681 A1 WO2019202681 A1 WO 2019202681A1 JP 2018015984 W JP2018015984 W JP 2018015984W WO 2019202681 A1 WO2019202681 A1 WO 2019202681A1
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- WIPO (PCT)
- Prior art keywords
- ground
- main tank
- tank
- switch
- grounding
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
Definitions
- the present invention relates to a grounding switch for grounding a bus system and discharging residual charges to the ground.
- Patent Document 1 discloses a grounding switch that grounds a bus system and discharges residual charges to the ground.
- a high-frequency surge is generated.
- a surge voltage of 100 kV or more is applied to the ground terminal.
- the ground terminal is connected to the main tank that accommodates the fixed-side electrode by a ground plate.
- the inductance of the ground plate is large in a high frequency range, and a potential difference is generated between the ground terminal and the main tank.
- a potential difference of 100 kV or more is generated between the main tank and the ground terminal, and a flash is generated in the main tank.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a grounding switch that suppresses the occurrence of a flashover.
- the present invention accommodates a main tank in which a fixed-side electrode connected to a conductor of a bus system is installed, and a link mechanism that drives a ground contact. And a ground contact accommodated in the ground switch tank, a shield surrounding the ground contact, and an insulating member disposed between the main tank and the ground switch tank.
- the shield is formed with a ground terminal projecting perpendicular to the moving axis of the ground contact.
- the main tank side and the ground switch tank side are covered with an insulating member, and the insulating member protrudes from the ground terminal on the main tank side of the ground terminal.
- Sectional drawing of the earthing switch which concerns on Embodiment 1 of this invention Sectional drawing of the insulation member and shield of the earthing switch concerning Embodiment 1
- Bottom view of insulating member and shield of ground switch according to Embodiment 1 Sectional drawing of the earthing switch which concerns on Embodiment 2 of this invention
- FIG. 1 is a cross-sectional view of a ground switch according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional view of the insulating member and the shield of the ground switch according to the first embodiment.
- FIG. 3 is a bottom view of the insulating member and the shield of the ground switch according to the first embodiment.
- the ground switch 1 according to the first embodiment accommodates a main tank 3 provided with a fixed-side electrode 2 connected to a conductor of the bus system and a link mechanism for driving the ground contact 4, and is connected to the main tank 3.
- the shield 6 is formed with a ground terminal 8 projecting perpendicularly to the moving axis of the ground contact 4.
- the ground terminal 8 is insulated from the main tank 3 and the ground switch tank 5 by an insulating member 7.
- a ground plate 9 is connected to a portion of the ground terminal 8 that is not covered with the insulating member 7.
- the ground plate 9 is connected to the main tank 3.
- the insulating member 7 protrudes from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Therefore, the dielectric breakdown distance between the main tank 3 and the ground terminal 8 is longer than that in the case where the insulating member 7 does not protrude from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Therefore, the size of the ground switch 1 can be reduced as compared with the case where the insulating member 7 does not protrude from the ground terminal 8 in the moving axis direction of the ground contact 4 and the insulation between the main tank 3 and the ground terminal 8 is improved. be able to.
- the ground switch 1 according to the first embodiment is insulated between the main tank 3 and the ground terminal 8 as compared with the case where the insulating member 7 does not protrude from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Since the destruction distance is long, the occurrence of a flash between the main tank 3 and the ground terminal 8 can be suppressed.
- FIG. FIG. 4 is a cross-sectional view of a ground switch according to Embodiment 2 of the present invention.
- the ground switch 11 accommodates the main tank 3 in which the fixed-side electrode 2 connected to the bus conductor is installed and the link mechanism that drives the ground contact 4, and is connected to the main tank 3.
- an insulating member 7 disposed between the ground switch tank 5 and the grounding switch tank 5.
- the shield 6 is formed with a ground terminal 8 projecting perpendicularly to the moving axis of the ground contact 4.
- the ground terminal 8 is insulated from the main tank 3 and the ground switch tank 5 by an insulating member 7.
- a ground plate 9 is connected to a portion of the ground terminal 8 that is not covered with the insulating member 7.
- the ground plate 9 is connected to the main
- the main tank 3 includes a grounding seat 12 installed at a portion facing the tip of the grounding terminal 8 that is not covered with the insulating member 7.
- the grounding seat 12 has a protruding portion that protrudes from the main tank 3 toward the grounding terminal 8.
- a gap of less than 10 mm is formed between the main tank 3 and the grounding terminal 8 or fastened with a bolt without a gap.
- Providing the grounding seat 12 in the main tank 3 is electrically synonymous with shortening the grounding plate 9 to reduce the impedance of the grounding plate 9, and the high voltage side and the low voltage side of the insulating member 7
- the breakdown strength of is higher than the breakdown strength of the grounding seat 12 from the ground terminal 8. Therefore, when a surge is generated by inserting the ground contact 4, the gap between the main tank 3 and the ground terminal 8 is short-circuited at the ground seat 12, and discharge occurs before the surge voltage is fully increased. Thereby, it is possible to suppress the occurrence of a flash along the surface of the insulating member 7.
- the gap between the main tank 3 and the grounding terminal 8 may be eliminated in the grounding seat 12 and contact may be made. Since the main tank 3 and the grounding terminal 8 are brought into contact with each other at the grounding seat 12, even if a surge occurs due to the introduction of the grounding contact 4, a current flows through the contact portion between the grounding seat 12 and the grounding terminal 8. No discharge or flashing occurs between the main tank 3 and the ground terminal 8 and along the surface of the insulating member 7. When the main tank 3 and the ground terminal 8 are brought into contact with each other at the grounding seat 12, the grounding seat 12 is detachably installed on the main tank 3, and is removed when measuring the main circuit resistance.
- the ground switch 11 when a surge occurs, the gap between the main tank 3 and the ground terminal 8 in the ground seat 12 is short-circuited, and discharge occurs before the surge voltage rises. 7 can be prevented from occurring along the surface of 7.
- FIG. FIG. 5 is a cross-sectional view of a ground switch according to Embodiment 3 of the present invention.
- the grounding switch 21 according to the third embodiment is provided with a protruding portion 13 that forms a protruding portion protruding toward the main tank 3 at the tip of the grounding terminal 8.
- a gap of less than 10 mm is formed between the main tank 3 and the ground terminal 8 or fastened with a bolt without a gap.
- Providing the convex portion 13 on the main tank 3 side of the ground terminal 8 is electrically synonymous with shortening the ground plate 9 to reduce the impedance of the ground plate 9, and the high voltage side of the insulating member 7.
- the low voltage side and the dielectric breakdown strength are higher than the dielectric breakdown strength from the ground terminal 8 to the ground seat 12. Therefore, when a surge is generated by inserting the ground contact 4, the gap between the main tank 3 and the ground terminal 8 is short-circuited at the convex portion 13, and discharge occurs before the surge voltage is fully increased. Thereby, it is possible to suppress the occurrence of a flash along the surface of the insulating member 7.
- the main tank 3 and the ground terminal 8 may be brought into contact with each other at the convex portion 13.
- the gap between the main tank 3 and the ground terminal 8 is short-circuited in the convex portion 13 and discharge occurs before the surge voltage is fully increased. 7 can be prevented from occurring along the surface of 7.
- the second embodiment and the third embodiment may be combined to provide the main tank 3 with the grounding seat 12 and the grounding terminal 8 with the convex portion 13.
- the configuration described in the above embodiment shows an example of the content of the present invention, and can be combined with another known technique, and can be combined with other configurations within the scope of the present invention. It is also possible to omit or change the part.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
This ground switch (1) has: a main tank (3) in which a fixed side electrode (2) connected to a bus-line system conductor is installed; a ground switch tank (5) housing a link mechanism for driving a ground contact (4) and connected to the main tank (3); the ground contact (4) housed in the ground switch tank (5); a shield (6) surrounding the ground contact (4); and an insulating member (7) disposed between the main tank (3) and the ground switch tank (5). The shield (6) is formed with a ground terminal (8) projecting vertically with respect to the moving axis of the ground contact (4). The ground terminal (8) is covered with the insulating member (7) on the main tank (3) side and on the ground switch tank (5) side. On the main tank (3) side of the ground terminal (8), the insulating member (7) more extends than the ground terminal (8).
Description
本発明は、母線系統を接地して残留電荷を大地に放電させる接地開閉器に関するものである。
The present invention relates to a grounding switch for grounding a bus system and discharging residual charges to the ground.
ガス絶縁機器の母線系統には、電流遮断後も残留電荷が存在するため、保守点検に際して母線系統を接地して残留電荷を大地に放電させる必要がある。特許文献１には、母線系統を接地して残留電荷を大地に放電させる接地開閉器が開示されている。
Since there is a residual charge in the bus system of gas insulation equipment even after current interruption, it is necessary to discharge the residual charge to the ground by grounding the bus system during maintenance. Patent Document 1 discloses a grounding switch that grounds a bus system and discharges residual charges to the ground.
残留電荷が存在している母線系統の導体に接続された固定側電極に接地コンタクトを投入した場合、高周波のサージが発生する。例えば、５５０ｋＶ系統では１００ｋＶ以上のサージ電圧が接地端子に印加される。接地端子は、固定側電極を収容する主タンクと接地板で接続されているが、高周波域では接地板のインダクタンスが大きく、接地端子と主タンクとの間に電位差が生じる。５５０ｋＶ系統の場合、主タンクと接地端子との間で１００ｋＶ以上の電位差が生じることとなり、主タンクへ閃絡が発生する。
When a ground contact is inserted into the fixed electrode connected to the conductor of the bus system where residual charges exist, a high-frequency surge is generated. For example, in a 550 kV system, a surge voltage of 100 kV or more is applied to the ground terminal. The ground terminal is connected to the main tank that accommodates the fixed-side electrode by a ground plate. However, the inductance of the ground plate is large in a high frequency range, and a potential difference is generated between the ground terminal and the main tank. In the case of the 550 kV system, a potential difference of 100 kV or more is generated between the main tank and the ground terminal, and a flash is generated in the main tank.
本発明は、上記に鑑みてなされたものであって、閃絡の発生を抑制した接地開閉器を得ることを目的とする。
The present invention has been made in view of the above, and an object of the present invention is to obtain a grounding switch that suppresses the occurrence of a flashover.
上述した課題を解決し、目的を達成するために、本発明は、母線系統の導体に接続される固定側電極が設置された主タンクと、接地コンタクトを駆動するリンク機構を収容し、主タンクに接続された接地開閉器タンクと、接地開閉器タンクに収容された接地コンタクトと、接地コンタクトを囲むシールドと、主タンクと接地開閉器タンクとの間に配置された絶縁部材とを有する。シールドは、接地コンタクトの移動軸に垂直に突出する接地端子が形成されている。接地端子は、主タンク側と接地開閉器タンク側とが絶縁部材で覆われており、接地端子の主タンク側において、絶縁部材が接地端子よりも張り出している。
In order to solve the above-described problems and achieve the object, the present invention accommodates a main tank in which a fixed-side electrode connected to a conductor of a bus system is installed, and a link mechanism that drives a ground contact. And a ground contact accommodated in the ground switch tank, a shield surrounding the ground contact, and an insulating member disposed between the main tank and the ground switch tank. The shield is formed with a ground terminal projecting perpendicular to the moving axis of the ground contact. As for the ground terminal, the main tank side and the ground switch tank side are covered with an insulating member, and the insulating member protrudes from the ground terminal on the main tank side of the ground terminal.
本発明によれば、閃絡の発生を抑制した接地開閉器を提供できるという効果を奏する。
According to the present invention, it is possible to provide a grounding switch that suppresses the occurrence of a flashover.
以下に、本発明の実施の形態に係る接地開閉器を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。
Hereinafter, a ground switch according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
実施の形態１．
図１は、本発明の実施の形態１に係る接地開閉器の断面図である。図２は、実施の形態１に係る接地開閉器の絶縁部材及びシールドの断面図である。図３は、実施の形態１に係る接地開閉器の絶縁部材及びシールドの下面図である。実施の形態１に係る接地開閉器１は、母線系統の導体に接続される固定側電極２が設置された主タンク３と、接地コンタクト４を駆動するリンク機構を収容し、主タンク３に接続された接地開閉器タンク５と、接地開閉器タンク５に収容され、先端が主タンク３に突き出た接地コンタクト４と、接地コンタクト４の主タンク３に突き出た部分を囲むシールド６と、主タンク３と接地開閉器タンク５との間に配置された絶縁部材７とを有する。シールド６は、接地コンタクト４の移動軸に垂直に突出する接地端子８が形成されている。接地端子８は、主タンク３、接地開閉器タンク５のどちらとも絶縁部材７により絶縁している。接地端子８の絶縁部材７で覆われていない部分に、接地板９が接続されている。接地板９は、主タンク３に接続されている。 Embodiment 1 FIG.
1 is a cross-sectional view of a ground switch according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the insulating member and the shield of the ground switch according to the first embodiment. FIG. 3 is a bottom view of the insulating member and the shield of the ground switch according to the first embodiment. The ground switch 1 according to the first embodiment accommodates a main tank 3 provided with a fixed-side electrode 2 connected to a conductor of the bus system and a link mechanism for driving the ground contact 4, and is connected to the main tank 3. A grounded switch tank 5, a ground contact 4 housed in the grounded switch tank 5 and having a tip projecting into the main tank 3, a shield 6 surrounding the projecting part of the ground contact 4 projecting into the main tank 3, and the main tank 3 and an insulating member 7 disposed between the earthing switch tank 5. The shield 6 is formed with a ground terminal 8 projecting perpendicularly to the moving axis of the ground contact 4. The ground terminal 8 is insulated from the main tank 3 and the ground switch tank 5 by an insulating member 7. A ground plate 9 is connected to a portion of the ground terminal 8 that is not covered with the insulating member 7. The ground plate 9 is connected to the main tank 3.
図１は、本発明の実施の形態１に係る接地開閉器の断面図である。図２は、実施の形態１に係る接地開閉器の絶縁部材及びシールドの断面図である。図３は、実施の形態１に係る接地開閉器の絶縁部材及びシールドの下面図である。実施の形態１に係る接地開閉器１は、母線系統の導体に接続される固定側電極２が設置された主タンク３と、接地コンタクト４を駆動するリンク機構を収容し、主タンク３に接続された接地開閉器タンク５と、接地開閉器タンク５に収容され、先端が主タンク３に突き出た接地コンタクト４と、接地コンタクト４の主タンク３に突き出た部分を囲むシールド６と、主タンク３と接地開閉器タンク５との間に配置された絶縁部材７とを有する。シールド６は、接地コンタクト４の移動軸に垂直に突出する接地端子８が形成されている。接地端子８は、主タンク３、接地開閉器タンク５のどちらとも絶縁部材７により絶縁している。接地端子８の絶縁部材７で覆われていない部分に、接地板９が接続されている。接地板９は、主タンク３に接続されている。 Embodiment 1 FIG.
1 is a cross-sectional view of a ground switch according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the insulating member and the shield of the ground switch according to the first embodiment. FIG. 3 is a bottom view of the insulating member and the shield of the ground switch according to the first embodiment. The ground switch 1 according to the first embodiment accommodates a main tank 3 provided with a fixed-
リンク機構が接地コンタクト４を駆動してシールド６から突出させ、固定側電極２に接触させることにより、固定側電極２に接続されている母線系統の導体に残留する電荷が大地に放電される。
When the link mechanism drives the ground contact 4 to protrude from the shield 6 and is brought into contact with the fixed electrode 2, the electric charge remaining on the conductor of the bus system connected to the fixed electrode 2 is discharged to the ground.
接地端子８の主タンク３側において、絶縁部材７が接地端子８よりも張り出している。したがって、主タンク３と接地端子８との絶縁破壊距離は、接地端子８の主タンク３側で絶縁部材７が接地端子８よりも張り出していない場合と比較して長くなる。よって、接地コンタクト４の移動軸方向に絶縁部材７が接地端子８よりも張り出していない場合と比較して接地開閉器１のサイズを小さくでき、主タンク３と接地端子８との絶縁性を高めることができる。
The insulating member 7 protrudes from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Therefore, the dielectric breakdown distance between the main tank 3 and the ground terminal 8 is longer than that in the case where the insulating member 7 does not protrude from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Therefore, the size of the ground switch 1 can be reduced as compared with the case where the insulating member 7 does not protrude from the ground terminal 8 in the moving axis direction of the ground contact 4 and the insulation between the main tank 3 and the ground terminal 8 is improved. be able to.
実施の形態１に係る接地開閉器１は、接地端子８の主タンク３側で絶縁部材７が接地端子８よりも張り出していない場合と比較して主タンク３と接地端子８との間の絶縁破壊距離が長いため、主タンク３と接地端子８との間で閃絡が発生することを抑制できる。
The ground switch 1 according to the first embodiment is insulated between the main tank 3 and the ground terminal 8 as compared with the case where the insulating member 7 does not protrude from the ground terminal 8 on the main tank 3 side of the ground terminal 8. Since the destruction distance is long, the occurrence of a flash between the main tank 3 and the ground terminal 8 can be suppressed.
実施の形態２．
図４は、本発明の実施の形態２に係る接地開閉器の断面図である。実施の形態２に係る接地開閉器１１は、母線導体に接続される固定側電極２が設置された主タンク３と、接地コンタクト４を駆動するリンク機構を収容し、主タンク３に接続された接地開閉器タンク５と、接地開閉器タンク５に収容され、先端が主タンク３に突き出た接地コンタクト４と、接地コンタクト４の主タンク３に突き出た部分を囲むシールド６と、主タンク３と接地開閉器タンク５との間に配置された絶縁部材７とを有する。シールド６は、接地コンタクト４の移動軸に垂直に突出する接地端子８が形成されている。接地端子８は、主タンク３、接地開閉器タンク５のどちらとも絶縁部材７により絶縁している。接地端子８の絶縁部材７で覆われていない部分に、接地板９が接続されている。接地板９は、主タンク３に接続されている。Embodiment 2. FIG.
FIG. 4 is a cross-sectional view of a ground switch according toEmbodiment 2 of the present invention. The ground switch 11 according to the second embodiment accommodates the main tank 3 in which the fixed-side electrode 2 connected to the bus conductor is installed and the link mechanism that drives the ground contact 4, and is connected to the main tank 3. A grounding switch tank 5; a grounding contact 4 housed in the grounding switch tank 5 and having a tip projecting into the main tank 3; a shield 6 surrounding a portion of the grounding contact 4 projecting into the main tank 3; And an insulating member 7 disposed between the ground switch tank 5 and the grounding switch tank 5. The shield 6 is formed with a ground terminal 8 projecting perpendicularly to the moving axis of the ground contact 4. The ground terminal 8 is insulated from the main tank 3 and the ground switch tank 5 by an insulating member 7. A ground plate 9 is connected to a portion of the ground terminal 8 that is not covered with the insulating member 7. The ground plate 9 is connected to the main tank 3.
図４は、本発明の実施の形態２に係る接地開閉器の断面図である。実施の形態２に係る接地開閉器１１は、母線導体に接続される固定側電極２が設置された主タンク３と、接地コンタクト４を駆動するリンク機構を収容し、主タンク３に接続された接地開閉器タンク５と、接地開閉器タンク５に収容され、先端が主タンク３に突き出た接地コンタクト４と、接地コンタクト４の主タンク３に突き出た部分を囲むシールド６と、主タンク３と接地開閉器タンク５との間に配置された絶縁部材７とを有する。シールド６は、接地コンタクト４の移動軸に垂直に突出する接地端子８が形成されている。接地端子８は、主タンク３、接地開閉器タンク５のどちらとも絶縁部材７により絶縁している。接地端子８の絶縁部材７で覆われていない部分に、接地板９が接続されている。接地板９は、主タンク３に接続されている。
FIG. 4 is a cross-sectional view of a ground switch according to
主タンク３は、絶縁部材７で覆われていない接地端子８の先端部と対向する部分に設置された接地座１２を備えている。接地座１２は、主タンク３から接地端子８側に突出する突出部をなしている。接地座１２において主タンク３と接地端子８との間には、１０ｍｍ未満のギャップを形成するか又はボルトで隙間無く締結している。
The main tank 3 includes a grounding seat 12 installed at a portion facing the tip of the grounding terminal 8 that is not covered with the insulating member 7. The grounding seat 12 has a protruding portion that protrudes from the main tank 3 toward the grounding terminal 8. In the grounding seat 12, a gap of less than 10 mm is formed between the main tank 3 and the grounding terminal 8 or fastened with a bolt without a gap.
主タンク３に接地座１２を設けることは、電気的には、接地板９を短くして接地板９のインピーダンスを小さくすることと同義であり、絶縁部材７の高電圧側と低電圧側との絶縁破壊強度は、接地端子８から接地座１２の絶縁破壊強度よりも高くなる。したがって、接地コンタクト４を投入することによってサージが発生すると、接地座１２において主タンク３と接地端子８との間のギャップが短絡し、サージ電圧が上がりきる前に放電が発生する。これにより、絶縁部材７の表面に沿って閃絡が発生することを抑制できる。
Providing the grounding seat 12 in the main tank 3 is electrically synonymous with shortening the grounding plate 9 to reduce the impedance of the grounding plate 9, and the high voltage side and the low voltage side of the insulating member 7 The breakdown strength of is higher than the breakdown strength of the grounding seat 12 from the ground terminal 8. Therefore, when a surge is generated by inserting the ground contact 4, the gap between the main tank 3 and the ground terminal 8 is short-circuited at the ground seat 12, and discharge occurs before the surge voltage is fully increased. Thereby, it is possible to suppress the occurrence of a flash along the surface of the insulating member 7.
なお、接地座１２において主タンク３と接地端子８との間のギャップを無くし、接触させてもよい。接地座１２において主タンク３と接地端子８とを接触させることにより、接地コンタクト４を投入することによってサージが発生しても、接地座１２と接地端子８との接触部に電流が流れるため、主タンク３と接地端子８との間、及び絶縁部材７の表面に沿って放電も閃絡も発生しない。接地座１２において主タンク３と接地端子８とを接触させる場合、接地座１２は着脱可能に主タンク３に設置し、主回路抵抗測定時には取り外す。
Note that the gap between the main tank 3 and the grounding terminal 8 may be eliminated in the grounding seat 12 and contact may be made. Since the main tank 3 and the grounding terminal 8 are brought into contact with each other at the grounding seat 12, even if a surge occurs due to the introduction of the grounding contact 4, a current flows through the contact portion between the grounding seat 12 and the grounding terminal 8. No discharge or flashing occurs between the main tank 3 and the ground terminal 8 and along the surface of the insulating member 7. When the main tank 3 and the ground terminal 8 are brought into contact with each other at the grounding seat 12, the grounding seat 12 is detachably installed on the main tank 3, and is removed when measuring the main circuit resistance.
実施の形態２に係る接地開閉器１１は、サージ発生時には接地座１２において主タンク３と接地端子８との間のギャップが短絡し、サージ電圧が上がりきる前に放電が発生するため、絶縁部材７の表面に沿って閃絡が発生することを抑制できる。
In the ground switch 11 according to the second embodiment, when a surge occurs, the gap between the main tank 3 and the ground terminal 8 in the ground seat 12 is short-circuited, and discharge occurs before the surge voltage rises. 7 can be prevented from occurring along the surface of 7.
実施の形態３．
図５は、本発明の実施の形態３に係る接地開閉器の断面図である。実施の形態３に係る接地開閉器２１は、接地端子８の先端部に主タンク３側に突出する突出部をなす凸部１３が設けられている。凸部１３において主タンク３と接地端子８との間には１０ｍｍ未満のギャップを形成するか又はボルトで隙間無く締結している。 Embodiment 3 FIG.
FIG. 5 is a cross-sectional view of a ground switch according to Embodiment 3 of the present invention. Thegrounding switch 21 according to the third embodiment is provided with a protruding portion 13 that forms a protruding portion protruding toward the main tank 3 at the tip of the grounding terminal 8. In the convex portion 13, a gap of less than 10 mm is formed between the main tank 3 and the ground terminal 8 or fastened with a bolt without a gap.
図５は、本発明の実施の形態３に係る接地開閉器の断面図である。実施の形態３に係る接地開閉器２１は、接地端子８の先端部に主タンク３側に突出する突出部をなす凸部１３が設けられている。凸部１３において主タンク３と接地端子８との間には１０ｍｍ未満のギャップを形成するか又はボルトで隙間無く締結している。 Embodiment 3 FIG.
FIG. 5 is a cross-sectional view of a ground switch according to Embodiment 3 of the present invention. The
接地端子８の主タンク３側に凸部１３を設けることは、電気的には、接地板９を短くして接地板９のインピーダンスを小さくすることと同義であり、絶縁部材７の高電圧側と低電圧側と絶縁破壊強度は、接地端子８から接地座１２の絶縁破壊強度よりも高くなる。したがって、接地コンタクト４を投入することによってサージが発生すると、凸部１３において主タンク３と接地端子８との間のギャップが短絡し、サージ電圧が上がりきる前に放電が発生する。これにより、絶縁部材７の表面に沿って閃絡が発生することを抑制できる。
Providing the convex portion 13 on the main tank 3 side of the ground terminal 8 is electrically synonymous with shortening the ground plate 9 to reduce the impedance of the ground plate 9, and the high voltage side of the insulating member 7. The low voltage side and the dielectric breakdown strength are higher than the dielectric breakdown strength from the ground terminal 8 to the ground seat 12. Therefore, when a surge is generated by inserting the ground contact 4, the gap between the main tank 3 and the ground terminal 8 is short-circuited at the convex portion 13, and discharge occurs before the surge voltage is fully increased. Thereby, it is possible to suppress the occurrence of a flash along the surface of the insulating member 7.
なお、実施の形態２に係る接地開閉器１１と同様に、凸部１３において主タンク３と接地端子８とを接触させても良い。
Note that, similarly to the ground switch 11 according to the second embodiment, the main tank 3 and the ground terminal 8 may be brought into contact with each other at the convex portion 13.
実施の形態３に係る接地開閉器２１は、サージ発生時には凸部１３において主タンク３と接地端子８との間のギャップが短絡し、サージ電圧が上がりきる前に放電が発生するため、絶縁部材７の表面に沿って閃絡が発生することを抑制できる。
In the ground switch 21 according to the third embodiment, when a surge occurs, the gap between the main tank 3 and the ground terminal 8 is short-circuited in the convex portion 13 and discharge occurs before the surge voltage is fully increased. 7 can be prevented from occurring along the surface of 7.
なお、実施の形態２と実施の形態３を組み合わせ、主タンク３に接地座１２を設けるとともに、接地端子８に凸部１３を設けてもよい。
The second embodiment and the third embodiment may be combined to provide the main tank 3 with the grounding seat 12 and the grounding terminal 8 with the convex portion 13.
以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。
The configuration described in the above embodiment shows an example of the content of the present invention, and can be combined with another known technique, and can be combined with other configurations within the scope of the present invention. It is also possible to omit or change the part.
１，１１，２１ 接地開閉器、２ 固定側電極、３ 主タンク、４ 接地コンタクト、５ 接地開閉器タンク、６ シールド、７ 絶縁部材、８ 接地端子、９ 接地板、１２ 接地座、１３ 凸部。
1,11,21 Ground switch, 2 Fixed side electrode, 3 Main tank, 4 Ground contact, 5 Ground switch tank, 6 Shield, 7 Insulation member, 8 Ground terminal, 9 Ground plate, 12 Ground seat, 13 Convex .
Claims (5)
- 母線系統の導体に接続される固定側電極が設置された主タンクと、
接地コンタクトを駆動するリンク機構を収容し、前記主タンクに接続された接地開閉器タンクと、
前記接地開閉器タンクに収容された接地コンタクトと、
前記接地コンタクトを囲むシールドと、
前記主タンクと前記接地開閉器タンクとの間に配置された絶縁部材とを有し、
前記シールドは、前記接地コンタクトの移動軸に垂直に突出する接地端子が形成されており、
前記接地端子は、前記主タンク側と前記接地開閉器タンク側とが前記絶縁部材で覆われており、
前記接地端子の前記主タンク側において、前記絶縁部材が前記接地端子よりも張り出していることを特徴とする接地開閉器。 A main tank with a fixed electrode connected to the conductor of the bus system;
Containing a link mechanism for driving a ground contact, and a ground switch tank connected to the main tank;
A ground contact housed in the ground switch tank;
A shield surrounding the ground contact;
An insulating member disposed between the main tank and the ground switch tank;
The shield is formed with a ground terminal protruding perpendicular to the moving axis of the ground contact,
The ground terminal is covered with the insulating member on the main tank side and the ground switch tank side,
The grounding switch, wherein the insulating member protrudes from the grounding terminal on the main tank side of the grounding terminal. - 母線導体に接続される固定側電極が設置された主タンクと、
接地コンタクトを駆動するリンク機構を収容し、前記主タンクに接続された接地開閉器タンクと、
前記接地開閉器タンクに収容された接地コンタクトと、
前記接地コンタクトを囲むシールドと、
前記主タンクと前記接地開閉器タンクとの間に配置された絶縁部材とを有し、
前記シールドは、前記接地コンタクトの移動軸に垂直に突出する接地端子が形成されており、
前記接地端子は、前記主タンク側と前記接地開閉器タンク側とが前記絶縁部材に覆われており、
前記接地端子の先端部及び前記主タンクの前記先端部と対向する部分の少なくとも一方には、導電性を有する突出部が形成されていることを特徴とする接地開閉器。 A main tank in which a fixed electrode connected to the bus conductor is installed;
Containing a link mechanism for driving a ground contact, and a ground switch tank connected to the main tank;
A ground contact housed in the ground switch tank;
A shield surrounding the ground contact;
An insulating member disposed between the main tank and the ground switch tank;
The shield is formed with a ground terminal projecting perpendicular to the moving axis of the ground contact,
The ground terminal is covered with the insulating member on the main tank side and the ground switch tank side,
A grounding switch, wherein at least one of a front end portion of the ground terminal and a portion facing the front end portion of the main tank is formed with a conductive projecting portion. - 前記突出部は、前記主タンクに設置された導電性部材であることを特徴とする請求項２に記載の接地開閉器。 The grounding switch according to claim 2, wherein the protrusion is a conductive member installed in the main tank.
- 前記突出部は、前記先端部から前記主タンク側に突出する凸部であることを特徴とする請求項２に記載の接地開閉器。 The grounding switch according to claim 2, wherein the projecting portion is a projecting portion projecting from the tip portion toward the main tank.
- 前記突出部において、前記主タンクと前記接地端子とが接触していることを特徴とする請求項２から４のいずれか１項に記載の接地開閉器。 The grounding switch according to any one of claims 2 to 4, wherein the main tank and the grounding terminal are in contact with each other at the projecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/015984 WO2019202681A1 (en) | 2018-04-18 | 2018-04-18 | Ground switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/015984 WO2019202681A1 (en) | 2018-04-18 | 2018-04-18 | Ground switch |
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| Publication Number | Publication Date |
|---|---|
| WO2019202681A1 true WO2019202681A1 (en) | 2019-10-24 |
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| PCT/JP2018/015984 WO2019202681A1 (en) | 2018-04-18 | 2018-04-18 | Ground switch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609141U (en) * | 1983-06-28 | 1985-01-22 | 株式会社 富士電機総合研究所 | Earthing switch with resistance |
| JPS6141366Y2 (en) * | 1980-07-18 | 1986-11-25 | ||
| JPH08306270A (en) * | 1995-04-28 | 1996-11-22 | Toshiba Corp | Grounding switch |
| WO2013079354A1 (en) * | 2011-11-28 | 2013-06-06 | Abb Technology Ag | Earth switch for a gas-insulated medium- or high-voltage system |
-
2018
- 2018-04-18 WO PCT/JP2018/015984 patent/WO2019202681A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141366Y2 (en) * | 1980-07-18 | 1986-11-25 | ||
| JPS609141U (en) * | 1983-06-28 | 1985-01-22 | 株式会社 富士電機総合研究所 | Earthing switch with resistance |
| JPH08306270A (en) * | 1995-04-28 | 1996-11-22 | Toshiba Corp | Grounding switch |
| WO2013079354A1 (en) * | 2011-11-28 | 2013-06-06 | Abb Technology Ag | Earth switch for a gas-insulated medium- or high-voltage system |
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