JP6253348B2 - Gas insulated switchgear and stationary induction electrical equipment connection device - Google Patents
Gas insulated switchgear and stationary induction electrical equipment connection device Download PDFInfo
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Description
本発明は、ガス絶縁開閉装置と静止誘導電気機器の接続装置に関する。具体的には、接続装置内で事故が発生した場合にもガス絶縁開閉装置と静止誘導電気機器に被害を及ぼさないための機構を備えた、ガス絶縁開閉装置と静止誘導電気機器の接続装置に関する。 The present invention relates to a gas insulated switchgear and a connection device for stationary induction electrical equipment. Specifically, the present invention relates to a connection device between a gas-insulated switchgear and a static induction electrical device having a mechanism for preventing damage to the gas-insulated switchgear and the static induction electrical device even when an accident occurs in the connection device. .
本技術分野の背景技術として、特許文献１がある。この発明は、ガス絶縁開閉装置と静止誘導電気機器との接続部の寸法縮小および簡略化及びコストの低減を目的とし、以下の構成をとっている。 As a background art of this technical field, there is Patent Document 1. The present invention has the following structure for the purpose of reducing the size and simplifying the connecting portion between the gas-insulated switchgear and the static induction electrical device and reducing the cost.
ガス絶縁開閉装置の接続導体である分岐母線導体とそれを収容した分岐母線容器は、接続装置を介して、静止誘導電気機器の接続導体とそれを収容した接続導体収納容器に接続される。接続装置の接続導体とそれを収容した接続容器は、ガス／液体区分絶縁スペーサを介して、ガス絶縁開閉装置の分岐母線導体と分岐母線容器に接続されると共に、液体／液体区分絶縁スペーサを介して、静止誘導電気機器の接続導体と接続導体収納容器に接続される。絶縁スペーサは、導体が挿通される開口部周囲を形成する中心導体部と、その外周に形成される絶縁部とから構成される。 The branch bus conductor that is the connection conductor of the gas insulated switchgear and the branch bus container that accommodates the branch bus conductor are connected to the connection conductor of the static induction electrical device and the connection conductor storage container that accommodates it via the connection device. The connection conductor of the connection device and the connection container that accommodates the connection conductor are connected to the branch bus conductor and the branch bus container of the gas insulated switchgear through the gas / liquid partition insulation spacer, and through the liquid / liquid partition insulation spacer. Thus, the connection conductor of the static induction electrical device and the connection conductor storage container are connected. The insulating spacer includes a central conductor portion that forms the periphery of the opening through which the conductor is inserted, and an insulating portion that is formed on the outer periphery thereof.
従来技術に示すガス絶縁開閉装置と静止誘導電気機器の接続装置において、地絡事故等が発生した場合、接続装置の内部圧力が急激に上昇し、接続容器及びその端部に設けられたスペーサは破壊する。この事故により、接続容器及び静止誘導電機器より漏油し火災を生ずる等、ガス絶縁開閉装置及び静止誘導電気機器への被害が甚大となり復旧に時間がかかるといった問題がある。本発明は接続装置内で事故が生じても、接続容器自体は破壊せず火災の発生等を防止することで送変電機器の復旧を早期に行うことのできるガス絶縁開閉装置と静止誘導電気機器の接続容器を提供することを目的とする。 In the connection device of the gas insulated switchgear and stationary induction electrical equipment shown in the prior art, when a ground fault or the like occurs, the internal pressure of the connection device suddenly rises and the connection container and the spacer provided at its end are Destroy. Due to this accident, there is a problem that the damage to the gas-insulated switchgear and the stationary induction electrical device is so great that it takes a long time to recover, such as oil leakage from the connection container and the stationary induction electrical device, causing a fire. The present invention relates to a gas-insulated switchgear and a stationary induction electrical device that can quickly restore a power transmission and transformation device by preventing the occurrence of a fire without destroying the connection container itself even if an accident occurs in the connection device It aims to provide a connection container.
上記課題を解決するために、本発明に係るガス絶縁開閉装置と静止誘導電気機器の接続装置は、内部に絶縁ガスが封入されたガス絶縁開閉装置と、内部に液体絶縁媒体が封入された静止誘導電気機器の間にガス絶縁開閉装置側絶縁スペーサと静止誘導電気機器側絶縁スペーサを介して接続容器を接続し、前記接続容器は内部に前記ガス絶縁開閉装置及び前記静止誘導電気機器とを電気的に接続する接続導体を有し、前記接続容器は放圧容器と接続され、かつ、前記接続容器の前記放圧容器との接合面内周に放圧板を有している。 In order to solve the above-described problems, a gas insulated switchgear and a stationary induction electrical apparatus connecting apparatus according to the present invention include a gas insulated switchgear in which an insulating gas is enclosed, and a stationary unit in which a liquid insulating medium is enclosed. A connection container is connected between the induction electrical equipment via a gas-insulated switchgear-side insulating spacer and a stationary induction electrical equipment-side insulation spacer, and the connection container electrically connects the gas-insulated switchgear and the static induction electrical equipment. The connection container is connected to the pressure release container, and has a pressure release plate on the inner periphery of the joint surface of the connection container with the pressure release container.
本発明に係るガス絶縁開閉装置及び静止誘導電気機器の接続装置（以下、接続装置という。）を設けることにより、接続装置内で事故が生じても接続容器及びその両端に設けられたスペーサは破壊を免れるため、接続装置からの漏油を防ぐことが可能となる。これにより、火災等の恐れを低減し、接続装置に隣接するガス絶縁開閉装置及び静止誘導電気機器への被害の拡大を防止することが可能となる。よって、事故発生後、送変電機器全体の早期復旧が可能となる。 By providing the gas-insulated switchgear according to the present invention and the connection device for static induction electrical equipment (hereinafter referred to as connection device), even if an accident occurs in the connection device, the connection container and the spacers provided at both ends thereof are destroyed. Therefore, it is possible to prevent oil leakage from the connecting device. As a result, the risk of fire or the like is reduced, and it is possible to prevent the damage to the gas insulated switchgear and the static induction electrical device adjacent to the connection device from expanding. Therefore, after the accident occurs, the entire power transmission / transformation equipment can be quickly recovered.
以下では、本発明を実施する上で好適な実施例について図面を用いて説明する。下記はあくまでも実施の例に過ぎず、発明の実施態様を限定する趣旨ではない。 Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. The following are merely examples of implementation and are not intended to limit embodiments of the invention.
図１及び図２に本発明の実施例１に係る接続装置の要部構成を示す。 1 and 2 show a main configuration of a connection device according to Embodiment 1 of the present invention.
図１において、静止誘導電気機器側導体１１とそれを収納した静止誘導電気機器側容器１２は、接続装置２０を介して、ガス絶縁開閉装置の接続導体であるガス絶縁開閉装置（ＧＩＳ）側導体９（以下、ＧＩＳ側導体という。）と、それを収容したガス絶縁開閉装置（ＧＩＳ）側容器１０（以下、ＧＩＳ側容器という。）に接続されている。 In FIG. 1, a static induction electrical device side conductor 11 and a static induction electrical device side container 12 in which the static induction electrical device side conductor 11 is housed are connected via a connection device 20 to a gas insulated switchgear (GIS) side conductor which is a connection conductor of the gas insulated switchgear. 9 (hereinafter referred to as a GIS-side conductor) and a gas insulated switchgear (GIS) -side container 10 (hereinafter referred to as a GIS-side container) containing the same.
接続装置２０の接続導体２４とそれを収納した接続容器２３は、その一端において、静止誘導電気機器側スペーサ２１を介して、静止誘導電気機器の静止誘導電気機器側導体１１と静止誘導電気機器側容器１２に接続される。静止誘導電気機器側容器１２及び接続装置２０には絶縁油が封入されている。 The connection conductor 24 of the connection device 20 and the connection container 23 storing the connection conductor 20 are connected to the stationary induction electrical device side conductor 11 of the stationary induction electrical device and the stationary induction electrical device side via the stationary induction electrical device side spacer 21 at one end thereof. Connected to the container 12. Insulating oil is sealed in the stationary induction electrical device side container 12 and the connection device 20.
接続装置２０の接続導体２４とそれを収納した接続容器２３は、その他端において、ガス絶縁開閉装置（ＧＩＳ）側スペーサ２２（以下、ＧＩＳ側スペーサという。）を介して、ＧＩＳ側導体９とＧＩＳ側容器１０に接続されている。ＧＩＳ側容器１０内にはＳＦ６ガス等の絶縁ガスが封入されている。 The connection conductor 24 of the connection device 20 and the connection container 23 storing it are connected to the GIS-side conductor 9 and the GIS at the other end via a gas-insulated switchgear (GIS) -side spacer 22 (hereinafter referred to as GIS-side spacer). Connected to the side container 10. An insulating gas such as SF6 gas is sealed in the GIS side container 10.
図１において、静止誘導電気機器側スペーサ２１及びＧＩＳ側スペーサ２２の凸面は共にガス絶縁開閉装置６側（図５参照）に向けて配置されている。こうすることで、万が一、接続装置内で事故が起こり、スペーサが破壊しても接続装置２０内の絶縁油はＧＩＳ側に噴出するので変圧器側を守ることが可能となる。 In FIG. 1, the convex surfaces of the static induction electrical device side spacer 21 and the GIS side spacer 22 are both arranged toward the gas insulated switchgear 6 side (see FIG. 5). By doing so, even if an accident occurs in the connection device and the spacer breaks, the insulating oil in the connection device 20 is ejected to the GIS side, so that the transformer side can be protected.
一方、２つのスペーサの凸面の向きを共に静止誘導電気機器側に向けて配置される構成とすることでＧＩＳ側を守ることも可能である。 On the other hand, it is also possible to protect the GIS side by adopting a configuration in which the directions of the convex surfaces of the two spacers are arranged toward the stationary induction electrical device side.
静止誘導電気機器側スペーサ２１及びＧＩＳ側スペーサ２２の間に設けられた本発明の実施例１に係る接続装置２０は、その鉛直下方にフランジ部で接続された放圧容器７を有する。 The connection device 20 according to the first embodiment of the present invention provided between the static induction electrical device side spacer 21 and the GIS side spacer 22 has a pressure release container 7 connected by a flange portion vertically below.
図２は図１のＡ−Ａ断面を示している。シールド１５ａを接続部材１５ｃを介し放圧板１５ｂに固定して放圧装置１５を構成する。この構成は一例であり、例えば接続部材１５ｃを省略してシールド１５ａを直接放圧板１５ｂに固定することも可能である。この放圧装置１５は、放圧板１５ｂで放圧容器７の内周側に固定される。 FIG. 2 shows an AA cross section of FIG. The pressure relief device 15 is configured by fixing the shield 15a to the pressure relief plate 15b via the connection member 15c. This configuration is an example, and for example, the connection member 15c can be omitted and the shield 15a can be directly fixed to the pressure release plate 15b. The pressure release device 15 is fixed to the inner peripheral side of the pressure release container 7 by a pressure release plate 15b.
シールド１５ａは接続容器２３の一部を構成するように接続容器２３と同じ曲率で構成するのが望ましい。また、シールド１５ａと接続容器２３の対向する端部は接続容器２３内の電界緩和を考慮して角を落とし丸みを帯びた形状とするのが好ましい。 The shield 15 a is preferably configured with the same curvature as that of the connection container 23 so as to form a part of the connection container 23. In addition, it is preferable that the opposite end portions of the shield 15a and the connection container 23 have a rounded shape with rounded corners in consideration of electric field relaxation in the connection container 23.
放圧装置１５は、通常運転時における接続容器２３内の圧力に耐えて固定されていなければならないが、接続容器２３内で事故が発生し圧力が上昇したときには破壊して接続容器２３から外れるように構成しなければならない。このようにするため、放圧板１５ｂには、放圧板１５ｂの放圧容器７との固定箇所近傍に肉薄部を設けて構成する（図２参照）。この肉薄部は事故時に破壊されるよう、上記固定箇所近傍に沿って周状に設けるのが好ましい。 The pressure relief device 15 must be fixed to withstand the pressure in the connection container 23 during normal operation. However, when an accident occurs in the connection container 23 and the pressure rises, the pressure release device 15 is broken and detached from the connection container 23. Must be configured. In order to do this, the pressure release plate 15b is configured by providing a thin portion in the vicinity of the location where the pressure release plate 15b is fixed to the pressure release container 7 (see FIG. 2). This thin portion is preferably provided in a circumferential shape along the vicinity of the fixed portion so as to be destroyed in the event of an accident.
事故が接続容器２３内で発生した場合、内部の圧力が上昇し、放圧板１５ｂが肉薄部で破壊する。放圧装置１５が接続容器２３から外れることで、接続容器２３の内部から噴出した油が放圧容器７に貯蔵される。 When an accident occurs in the connection container 23, the internal pressure rises and the pressure release plate 15b is broken at the thin portion. When the pressure release device 15 is detached from the connection container 23, the oil ejected from the inside of the connection container 23 is stored in the pressure release container 7.
これにより、接続容器２３の両端に設けられた静止誘導電気機器側スペーサ２１及びＧＩＳ側スペーサ２２は破壊を免れるので、静止誘導電気機器及びガス絶縁開閉装置への被害の拡大を防ぐことが可能となる。これにより、事故後の機器の復旧を早めることが可能となる。また、接続容器２３の外部（空気中）への絶縁油の噴油を防ぐことが可能となるため機器の火災を防止することが可能になる。 As a result, since the static induction electrical device side spacer 21 and the GIS side spacer 22 provided at both ends of the connection container 23 are prevented from being broken, it is possible to prevent the damage to the static induction electrical device and the gas insulated switchgear from being expanded. Become. This makes it possible to speed up the recovery of the equipment after the accident. Moreover, since it becomes possible to prevent the insulating oil from being sprayed to the outside (in the air) of the connection container 23, it becomes possible to prevent a fire of the equipment.
図３は本発明の実施例２に係る接続装置を示す断面図である。実施例１と同様の構成については同じ符号を付し、その説明を省略する。以下、実施例１と異なる点についてのみ図３及び４を用いて説明する。 FIG. 3 is a cross-sectional view showing a connection device according to Embodiment 2 of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Hereinafter, only differences from the first embodiment will be described with reference to FIGS.
本実施例では、放圧装置１５を接続装置２３の側面に設ける。また接続容器２３に接続される放圧容器７はＬ字形で構成する。接続装置２３の鉛直下方に十分なスペースを確保できない等の事情がある場合にはこの様な構成を採ることができる。 In this embodiment, the pressure relief device 15 is provided on the side surface of the connection device 23. Further, the pressure release container 7 connected to the connection container 23 is formed in an L shape. Such a configuration can be adopted when there is a situation in which a sufficient space cannot be secured vertically below the connection device 23.
放圧板１５には係合部材１５ｄを設け、放圧容器７には係止部材１６を設ける。接続容器２３内で事故が発生した場合、実施例１と同様に放圧装置１５が破壊するが、放圧装置１５の係合部材１５ｄが係止部材１６に係合し固定されることで放圧装置１５が放圧容器７を塞ぐことを防止し、噴出した絶縁油の流れを確保する（図４参照）。これにより、実施例１と同様の信頼性を確保することが可能になる。 An engagement member 15 d is provided on the pressure release plate 15, and a locking member 16 is provided on the pressure release container 7. When an accident occurs in the connection container 23, the pressure release device 15 breaks in the same manner as in the first embodiment. However, the engagement member 15d of the pressure release device 15 engages with the locking member 16 and is fixed. The pressure device 15 is prevented from blocking the pressure release container 7, and the flow of the ejected insulating oil is ensured (see FIG. 4). This makes it possible to ensure the same reliability as in the first embodiment.
１・・・主母線
２・・・断路器
３・・・遮断器
４・・・交流器
５・・・分岐母線
６・・・ガス絶縁開閉装置
７・・・放圧容器
８・・・静止誘導電気機器
９・・・ガス絶縁開閉装置（ＧＩＳ）側導体
１０・・・ガス絶縁開閉装置（ＧＩＳ）側容器
１１・・・静止誘導電気機器側導体
１２・・・静止誘導電気機器側容器
１５・・・放圧装置
１５ａ・・・シールド
１５ｂ・・・放圧板
１５ｃ・・・接続部材
１５ｄ・・・係合部材
１６・・・係止部材
２０・・・接続装置
２１・・・静止誘導電気機器側スペーサ
２２・・・ガス絶縁開閉装置（ＧＩＳ）側スペーサ
２３・・・接続容器
２４・・・接続導体
２５・・・絶縁部
２６・・・中心導体部
DESCRIPTION OF SYMBOLS 1 ... Main bus 2 ... Disconnector 3 ... Circuit breaker 4 ... Alternator 5 ... Branch bus 6 ... Gas insulation switchgear 7 ... Pressure-release container 8 ... Stationary Inductive electrical equipment 9 ... Gas insulated switchgear (GIS) side conductor 10 ... Gas insulated switchgear (GIS) side container 11 ... Static induction electrical equipment side conductor 12 ... Static induction electrical equipment side container 15 ... Pressure release device 15a ... Shield 15b ... Pressure release plate 15c ... Connection member 15d ... Engagement member 16 ... Locking member 20 ... Connection device 21 ... Static induction electricity Equipment side spacer 22 ... Gas insulated switchgear (GIS) side spacer 23 ... Connection container 24 ... Connection conductor 25 ... Insulation part 26 ... Central conductor part
Claims (4)
前記接続容器は内部に前記ガス絶縁開閉装置及び前記静止誘導電気機器とを電気的に接続する接続導体を有し、
前記接続容器は放圧容器と接続され、かつ、前記放圧容器の内周に放圧装置を有し、
前記放圧装置は、シールドと、放圧板とで構成され、
前記シールドは、前記接続容器の内周面に沿って設けられ、
前記放圧板は前記放圧容器の内周面に固定され、
前記放圧板は前記放圧容器の内周面との固定箇所近傍に肉薄部を設けることを特徴とする、
ガス絶縁開閉装置と静止誘導電気機器の接続装置。 A connection container that connects between a gas-insulated switchgear in which an insulating gas is sealed inside and a static induction electrical device in which a liquid insulating medium is sealed, via a gas-insulated switchgear-side spacer and a static induction electrical device-side spacer In
The connection container has a connection conductor for electrically connecting the gas-insulated switchgear and the static induction electrical device inside,
It said connection container is connected to the discharge vessel, and have a relief device on the inner circumference of the discharge vessel,
The pressure relief device is composed of a shield and a pressure relief plate,
The shield is provided along the inner peripheral surface of the connection container,
The pressure relief plate is fixed to the inner peripheral surface of the pressure relief vessel;
The pressure release plate is characterized in that a thin portion is provided in the vicinity of a fixed portion with the inner peripheral surface of the pressure release container ,
Connecting device for gas-insulated switchgear and static induction electrical equipment.
前記放圧容器は前記接続容器の鉛直下方に設けられることを特徴とする、The pressure release container is provided vertically below the connection container,
ガス絶縁開閉装置と静止誘導電気機器の接続装置。Connecting device for gas-insulated switchgear and static induction electrical equipment.
前記放圧容器は前記接続容器の側面に設けられ、前記放圧容器の先端が下方に延設されることを特徴とする、The pressure release container is provided on a side surface of the connection container, and a tip of the pressure release container extends downward,
ガス絶縁開閉装置と静止誘導電気機器の接続装置。Connecting device for gas-insulated switchgear and static induction electrical equipment.
前記放圧板は前記放圧容器側に係合部を有し、The pressure release plate has an engaging portion on the pressure release container side,
前記放圧容器は前記係合部が係止する係止部を有することを特徴とする、The pressure release container has a locking part that the engaging part locks,
ガス絶縁開閉装置と静止誘導電気機器の接続装置。Connecting device for gas-insulated switchgear and static induction electrical equipment.
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| JPS5535865U (en) * | 1978-08-29 | 1980-03-07 | ||
| JPS59155780U (en) * | 1983-04-04 | 1984-10-19 | 日新電機株式会社 | Hand holes in high voltage electrical equipment containers |
| JPS62201012A (en) * | 1986-02-26 | 1987-09-04 | 株式会社東芝 | Safety device for gas insulated switchgear |
| JP2013115891A (en) * | 2011-11-28 | 2013-06-10 | Mitsubishi Electric Corp | Connection device |
-
2013
- 2013-10-30 JP JP2013224874A patent/JP6253348B2/en active Active
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