WO2015178160A1 - アークエリミネータ付遮断器及びそれを適用した受配電設備 - Google Patents
アークエリミネータ付遮断器及びそれを適用した受配電設備 Download PDFInfo
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- WO2015178160A1 WO2015178160A1 PCT/JP2015/062474 JP2015062474W WO2015178160A1 WO 2015178160 A1 WO2015178160 A1 WO 2015178160A1 JP 2015062474 W JP2015062474 W JP 2015062474W WO 2015178160 A1 WO2015178160 A1 WO 2015178160A1
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- Prior art keywords
- circuit breaker
- circuit
- arc
- accident
- switchgear
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
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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
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H79/00—Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
- H02B1/34—Racks
- H02B1/36—Racks with withdrawable units
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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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
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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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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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
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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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/28—Earthing arrangements
Definitions
- the present invention provides an arc capable of promptly grounding an electric circuit in which an accident has occurred and allowing an accident current to flow to the ground in the event of an arc accident such as a ground fault or short circuit occurring in a low voltage, medium voltage, or high voltage switchgear.
- the present invention relates to a circuit breaker equipped with an eliminator (accident arc elimination device) and a power distribution facility to which the circuit breaker is applied.
- Low-voltage, medium-voltage, or high-voltage power distribution equipment is an indispensable equipment system as a social infrastructure for power supply and demand such as buildings and factories, and its safety and reliability are not to mention the manufacturer.
- the installation work and operation and maintenance are fully considered.
- ground faults and short circuits may occur due to damage to the insulation function of the electric circuit due to unexpected invasion of small animals or foreign objects, deterioration of insulation due to aging, or equipment damage due to a huge earthquake exceeding the expected level. Accidental breakdowns may occur.
- the high-current arc is continuously generated, so that the metal such as the surrounding conductors and the casing is further melted and vaporized, and the damage damage to the device is expanded. If the duration of the accident arc is long, even if it is divided by a metal shielding plate for each electric circuit section inside the switchgear like a metal clad switchgear, the metal partition will be damaged or damaged due to deformation or melting. The range of switchgear is expanded, causing great damage.
- the removal of faults in such a power distribution system is usually designed to be performed by a power circuit breaker provided for protection of the electric circuit, but the fault circuit is disconnected from the power supply by the operation of the circuit breaker from the fault detection. Since it takes at least 100 milliseconds or more to remove the arc fault of the equipment, the power generating system has suffered significant damage that is almost impossible to reuse by that time. A long period of time is required for the restoration of power, and during that time, power cannot be supplied. In addition, the cost required for restoration will be enormous. Therefore, in order to limit the damage to the minimum and minimize the equipment restoration period after an accident failure, it is effective to shorten the arc failure duration.
- Patent Document 1 in a very short time of several milliseconds after the occurrence of an arc accident, the fault current is bypassed to the ground via a grounding energization circuit having a impedance much lower than that of the arc circuit. A system that applies an arc extinguishing in an extremely short time has been introduced.
- Non-Patent Document 1 is a product catalog of the invention of Patent Document 1, and details of application are also described.
- the fault current arc is extinguished by energizing the fault current by bypassing the ground circuit within a very short time of several milliseconds after the fault occurs.
- the arc energy injected into the insulating gas space at the fault site and the metal such as the conductor, insulator, and housing can be minimized, the arc damage at the fault location is extremely small and the arc current is large.
- the equipment can be operated as it is.
- a high-speed input device (Primary switching unit in Non-Patent Document 1), which is the main equipment of an arcuate terminator (accident arc removal device), has a fault current at the time of an arc accident of 1.5 milliseconds.
- a switch-gearing device that is mounted on a fixed or pull-out type carriage between the low-phase, medium-pressure, or high-voltage three-phase electric circuit and the ground in a device such as a switchgear. If necessary, extend the electrical circuit of important points and enlarge the switchgear if necessary.
- this high-speed input device has a structure in which the failure current is energized until the power circuit breaker of the failure circuit is cut off by welding the contact when the failure current is turned on, so that it is replaced after one operation. I am doing so.
- the damage caused by the arc, including the branch circuit part where the accident occurred is Although it can be very small, depending on the magnitude of the accident current, for example, in the case of a relatively small current, the fault circuit circuit part is in a state where it can be reused as it is just by cleaning and inspection.
- the other circuit circuits can be restored and used without any change, in order to replace the high-speed input device attached to the busbar. Will be forced to have a bus blackout.
- a breaker with an archery terminator in which a high-speed input device is embedded in an insulating support by means such as casting or mounted in the insulating support is provided. It is intended to provide power receiving and distribution equipment composed of switch gears that are built into the main circuit section classification, with the eliminator breaker as a drawer type.
- the circuit breaker with an arquarimator as described above and the power receiving and distribution equipment to which the circuit breaker is applied are composed of a switchgear equipped with a circuit breaker with an quarrier terminator in place of a circuit breaker that performs a protection division of a normal circuit section unit. Therefore, there is no need for design considerations for installing the high-speed input device, which is the main device of the circuit section archery terminator function inside the switchgear, at the key points, and it is not necessary to secure space for it, and it is compact and easy to plan for equipment distribution Equipment can be obtained.
- Embodiment 1 of the present invention It is a structure conceptual diagram of the circuit breaker with an irrigation terminator (both sides) shown in Embodiment 1 of the present invention. It is a single line connection figure which shows an example of the power distribution equipment to which the circuit breaker with an archery terminator shown in Embodiment 2 of this invention is applied. It is a figure which shows the single-line figure symbol of the circuit breaker with an quarry-minator (one side type) shown in Embodiment 2 of this invention. It is a structure conceptual diagram of the circuit breaker with an irrigator (one side type) shown in Embodiment 2 of the present invention. It is a figure which shows the single-line figure symbol of the circuit breaker with an irrigation terminator (both sides) shown in Embodiment 2 of this invention. It is a structure conceptual diagram of the circuit breaker with an archery terminator (both sides) shown in Embodiment 2 of the present invention.
- FIG. 1 is a single-line connection diagram showing an example of a circuit breaker with an quarry terminator and a power receiving / distributing facility to which the circuit breaker is applied according to Embodiment 1 for carrying out the present invention. More specifically, FIG. It is a single wire connection diagram which shows an example.
- reference numeral 2 denotes a configuration in which a high-speed charging device for an arquaric terminator is mounted on one side with respect to the breaking point of the circuit breaker so that the archery terminator can be installed in the three-phase electric circuit from the transformer 1 to the breaking point of the breaker.
- a circuit breaker with a quarry terminator (one side type).
- FIG. 200 is a switchgear in which the circuit breaker 2 with the archery terminator is detachably mounted, and 3 is a circuit breaker with an archery terminator (both sides) equipped with a high-speed closing device for the archery terminator on both sides of the breakpoint.
- Arquariminators can be installed on the three-phase circuit on both sides of the point.
- Reference numeral 300 denotes a switchgear on which the circuit breaker 3 with an archery terminator is detachably mounted.
- Reference numeral 400 denotes a switchgear on which the circuit breaker 4 with an archery terminator is detachably mounted.
- FIG. 2 is a single-line diagram symbol showing the circuit breaker with an quarrier terminator (one side type) 2.
- FIG. 3 is a conceptual diagram of the structure of the circuit breaker with an archuric terminator (one side type) 2. 2 and 3, 2a is a blocking portion, 2a1 is an interelectrode insulator of the blocking portion, and 2b is a high-speed input device, for example, as shown in Patent Document 1, but by a vacuum insulating technique having high insulating performance.
- the apparatus is small and has a size equivalent to an insulation distance in the atmosphere.
- 2b1 is an insulator of the high-speed input device, which is cast-insulated integrally with the high-speed input device 2b, and insulates the circuit portion of the circuit breaker 2 such as the interrupting portion 2a and the interelectrode insulator 2a1 and the insertion contact conductor 2d.
- Strength to provide mechanical support As the casting insulating material, an epoxy resin is used as a thermosetting resin in view of mechanical strength and electrical performance, but other resins or thermoplastic resins may be used.
- the high-speed input device 2b is not casted integrally with the insulator 2b1, but the insulator 2b1 of the high-speed input device 2b is an insulating case-like part manufactured by casting or molding, and the high-speed input device 2b is assembled and detached inside It may be configured freely. If it carries out like this, since replacement
- the structure is simple, but it is necessary to replace the high-speed input device 2b and the insulator 2b1 together and dispose of them.
- One side of the high-speed input device 2b is electrically and mechanically fastened with an electric conductor 2d (lower side in FIG. 3) connected to the pole on one side of the blocking portion 2a and a fastening member such as a bolt.
- the other of the high-speed input device 2b is connected to the main body grounding contact 2c1 of the circuit breaker 2 with the archurminator by the grounding conductor circuit 2c, and the switchgear of the switchgear is connected via the grounding terminal 2c2 provided in the switchgear circuit breaker chamber.
- An accident current is supplied from the ground conductor 2c3 to the ground.
- the ground conductor circuit 2c (2c1, 2c2, 2c3) is provided with a short-time energization current and an energization time according to the specifications of switch gears and circuit breakers such as IEC (International Electrotechnical Commission), and is a high-speed input device.
- 2b is fastened by fastening means such as bolts that can be attached and detached.
- 2c1 and 2c2 are in sliding contact.
- the high-speed input device 2b is configured to extinguish the arc in the accident circuit portion by turning on and bypassing the arc current to flow to the ground conductor circuit 2c when an arc accident occurs in the circuit connected to the circuit breaker 2. Therefore, it is necessary to replace each time of the loading operation.
- Reference numeral 2e denotes a support insulator, which electrically and mechanically supports the other pole of the blocking portion 2b and the electric conductor (upper side in FIG. 3) 2d connected thereto.
- the outer shape and attachment structure of the support insulator 2e have the same dimensions and attachment structure as the insulator 2b1 of the high-speed input device.
- the tip of the upper and lower circuit conductors 2d (the right end in FIG. 3) is, for example, a tulip contact contactor configured to be detachable with respect to a switchgear circuit terminal (not shown).
- Reference numeral 2f denotes a wheel provided for the convenience of moving the circuit breaker 2 with the archurimator in the switchgear 200 or the like.
- the breaker with an irrigator in which a high-speed input device is provided on the electric conductor (upper side in FIG. 3) connected to the other pole of the breaker is also a recombination of members and the ground side conductor Therefore, it can be selected as appropriate according to the configuration of the power distribution facility.
- FIG. 4 is a single-line diagram symbol showing the circuit breaker with an archuric terminator (both sides) 3.
- FIG. 5 is a conceptual diagram of the structure of the circuit breaker with an irrigator (both sides) 3. This is a bipolar type in which a high-speed input device 3b is provided on both poles of the blocking portion 3a. Each configuration is the same as that of the one-side shape described in FIGS.
- circuit breaker with an archurimator it is possible to install a high-speed input device on all the electric paths of the switchgear simply by selecting the circuit breaker with an arquarimator.
- a high-speed charging device for an arquarimator can be installed in all electric circuits without leakage.
- the circuit breaker with the quarry terminator is added to the circuit breaker. All you need to do is replace it.
- a protection system works to send a driving signal to the attached circuit breaker 4 and disconnect the electric circuit in the accident section to localize and minimize damage damage.
- a time of about 100 milliseconds elapses at the earliest after an accident occurs in order for the related circuit breaker to operate and disconnect the accident section. If the fault current is large in the equipment circuit with large equipment capacity and low fault impedance, the arc energy due to the arc accident is large. Even if the accident continues for about 100 milliseconds, the occurrence of the accident is about several tens of millimeters.
- the power receiving and distribution equipment to which the breaker with an archurimator of this invention is applied is configured as described above, in the unlikely event of an arc accident of the power receiving and power distribution equipment, the operation loss in that case is minimized. It is easy and easy to design at the time of facility planning. In addition, refurbishment of existing equipment with an arbor terminator function can be done easily and at low cost, which can shorten the power outage period and reduce the cost of remodeling. Furthermore, it is easy to install the archery terminator function with a fine mesh without increasing the size of the facility on the entire electrical circuit of the power receiving and distributing facility. In addition, the replacement work after the operation of the high-speed input device accompanying the occurrence of the arc accident is simple, and the equipment can be quickly restored after the arc accident is resolved, so the power failure time is short and the operation loss is reduced.
- the case where the high-speed input device is exchanged by one operation is shown as an example. In this case, since the number of exchanges is frequent, the effect of the present embodiment is maximized. However, the high-speed input device does not need to be exchanged in one operation, for example, twice or three times or more. It goes without saying that the effects of the present embodiment can be obtained even when the exchange is performed.
- FIG. FIGS. 6 to 10 show a circuit breaker with an archuric terminator according to a second embodiment and a power distribution facility to which the circuit breaker is applied.
- FIG. 6 is a single-line connection diagram illustrating an example of a circuit breaker with an archurimeter and a power receiving / distributing facility to which the circuit breaker is applied according to Embodiment 2 for carrying out the present invention.
- the circuit breakers 20, 30, and 40 with the quarry terminator shown in the second embodiment are the circuit breakers with the archery terminator whose insertion device is an insertion type, and the operation at the time of an arc accident Only the high-speed input device that needs to be replaced later is improved so as to be removable from the circuit breaker body.
- FIG. 8 is an insertion contact part, and the electric circuit 20d and the high-speed input device 20b on the lower side of the circuit breaker 20 have a detachable insertion contact structure such as a tulip contact.
- the insulator 20b1 of the high-speed charging device is configured as a case-shaped casting or a molded product, instead of being integrally cast with the high-speed charging device 20b.
- the insertion contact portion 30g in FIG. 9 has the same structure as the insertion contact portion 20g, and has a removable insertion contact structure such as a tulip contact. Other configurations are the same as those described in the first embodiment. Since the second embodiment is easier to recover than the first embodiment, the power failure time at the time of recovery is reduced and the operation loss is further reduced.
- Embodiment 3 In the circuit breaker with an quarry terminator described in the first embodiment and the second embodiment and the power receiving and distribution facility to which the circuit breaker is applied, the circuit breaker with the quarry terminator (one side type) and the circuit breaker with the quarry terminator (both sides type) are connected to the electric circuit. Although it uses properly according to a division, it is good also considering all the circuit breakers as a circuit breaker with an irrigator (two-sided type). In this case, facility planning is further facilitated, and if a high-speed insertion device for the busbar section (only one busbar is used in FIGS. 1 and 6 illustrated) is operated, another feeder circuit breaker can be installed. In some cases, it can be used as an alternative, making it easier to recover from an accident and reducing power outage time during recovery.
- each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted.
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Abstract
Description
その後も故障が継続している限り、大電流アークが継続して発生しているので、周辺の導体や筐体など金属をさらに溶融し蒸気化して装置などへの被害損傷が拡大する。メタルクラッド形スイッチギヤのようにスイッチギヤ内部で各電路区画ごとに金属遮蔽板で区分されたものでも、事故アークの継続時間が長い場合には、金属隔壁が変形や溶融などで損傷区画や損傷スイッチギヤの範囲が拡大し大きな被害になる。
したがって、損傷を最小限に制限し、事故故障後の設備復旧期間を最小化するためには、アーク故障継続時間を短くすることが有効である。
また、非特許文献1は、上記特許文献1の発明の製品カタログであり、適用の詳細も記載してある。
引き出し台車に搭載した形のものは、予備遮断器など、通常は使用していない回線の遮断器を撤去して、その遮断器室に高速投入装置を搭載した引き出し形台車を挿入することで、簡単に設置できるものである。ただし、この方法を適用するには、予備の回線をアークエリミネータ機能に置き換える必要があり、受配電設備としての冗長性が低下することになる。また、この高速投入装置は故障電流の投入時に接点を溶着させることで、故障電路の電源側遮断器が遮断するまでの間、故障電流通電を行う構造であるため、1回の動作後には取り替えるようにしている。
ただし、高速投入装置を各電路区分毎に設置するためには、スイッチギヤなどの装置内で電路側通電導体の配置およびその絶縁空間距離の確保、接地側導体の配置に加え、高速投入装置の迅速な取り替えのための作業エリヤも含めてのスペース確保が必要で、スイッチギヤなどの装置が大型となる。
さらに、アーク故障発生による高速投入装置動作後の取替え作業に対しても、通電導体部、接地導体部、および、高速投入装置の固定部、駆動信号線などの接続部の解体、取り付け作業が必要で、その間の停電時間が長い。
また、既に運転を実施している受配電設備のスイッチギヤなどの装置に対して、アークエリミネータ機能を付加する場合には、光ファイバーなどのセンサを利用したアーク事故検出装置の設置および高速投入装置への駆動信号線の配置などの追加作業は必要であるが、スイッチギヤの構造や外形寸法に大きく影響する主回路電路およびスイッチギヤ筐体追加などの大幅な改造が不要で、引出し形遮断器をアークエリミネータ付遮断器に取り替えることで可能となり、追加改造に伴う設備停電期間の短縮ができるために、設備操業ロスの極少化を図ることができる。
さらに、万が一のアーク事故発生に伴う高速投入装置の動作で、取替えの場合にも、遮断器を引き出した状態で交換作業ができるので、作業性がよく短時間で出来るため設備の復電が早くできるので、操業ロスの減少ができる。なお、予備のアークエリミネータ付遮断器があれば、それと交換すればよいので、さらに早く復電できる効果がある。
図1は、この発明を実施するための実施の形態1によるアークエリミネータ付遮断器とそれを適用した受配電設備の一例を示す単線接続図で、より具体的には変圧器二次の配電回路例を示す単線接続図である。
図1において、2は変圧器1から、この遮断器の遮断点までの三相の電路にアークエリミネータが設置できるよう遮断器の遮断点に対して片側にアークエリミネータ用高速投入装置を搭載し構成されたアークエリミネータ付遮断器(片側形)である。200は、アークエリミネータ付遮断器2を挿脱可能に搭載したスイッチギヤ、3はアークエリミネータ用高速投入装置を遮断点両側に搭載したアークエリミネータ付遮断器(両側形)で、この遮断器の遮断点の両側の三相電路にアークエリミネータが設置できる。300はアークエリミネータ付遮断器3を挿脱可能に搭載したスイッチギヤである。4はこの遮断器の遮断点から負荷側の三相電路にアークエリミネータが設置できるよう遮断点の片側にアークエリミネータ用高速投入装置を搭載し構成されたアークエリミネータ付遮断器(片側形)で、400はアークエリミネータ付遮断器4を挿脱可能に搭載したスイッチギヤである。
図2および図3で、2aは遮断部、2a1は遮断部の極間絶縁体、2bは高速投入装置で、例えば特許文献1に示されるものであるが、高い絶縁性能を有する真空絶縁技術により小型であり、大気中の絶縁距離相当寸法の大きさで装置が構成してある。2b1は高速投入装置の絶縁体であり、高速投入装置2bと一体で注型絶縁し、遮断部2a及びその極間絶縁体2a1や差込接触子導体2dなど遮断器2の電路部を絶縁ならびに機械的支持をする強度を持たせている。注型絶縁材料は、機械的強度および電気的性能から熱硬化性樹脂でエポキシ樹脂が使用されるが、他の樹脂あるいは熱可塑性樹脂であってもよい。また、高速投入装置2bは絶縁体2b1と一体注型でなく、高速投入装置2bの絶縁体2b1を注型または成型で製作した絶縁ケース状部品とし、高速投入装置2bをその内部に組み立てて着脱自在に構成したものでもよい。こうすると、高速投入装置動作後の取り替えは、高速投入装置2bだけを取り替えればよいので、絶縁体2b1は再利用できるメリットがある。なお、非特許文献1に示すような、一体注型の場合は、構造がシンプルであるが、高速投入装置2bと絶縁体2b1とを一体で取り替えて廃却することが必要である。
なお、高速投入装置2bは、遮断器2が繋がる電路にアーク事故が発生したとき、投入してアーク電流を迂回させて接地導体回路2cに流すことで事故電路部のアークを消滅させるものであって、投入動作1回ごとに取り替えを要するものである。
図示はしていないが、遮断部の他方の極につながる電路導体(図3で上部側)に高速投入装置を設けた形のアークエリミネータ付遮断器(片側形)も部材の組み換えと接地側導体の追加だけで構成できるので、受配電設備の構成に応じて適宜選択できる。
これは、遮断部3aの両極に高速投入装置3bを装備した両極形である。それぞれの構成は、図2及び図3で説明した片側形のものと同じであり、詳細は省略する。
万が一の、受配電設備内アーク事故が発生することを想定し、事故復旧までの受配電設備稼働率を最大化する受配電設備計画を立てる。この場合、一般的な単独取り付けの高速投入装置を、アーク事故の発生を想定する電路部位とその電路区画を他の健全な電路から切り離し事故後の設備復旧作業を含めた停電範囲の最小化および停電時間の最短化のために、設置する部位を検討し、それを設置するためのスペースや取り付け構造を検討し、スイッチギヤ1の配置計画をすることが必要となる。
しかしながら、本発明に係るアークエリミネータ付遮断器を用いることで、アークエリミネータ付遮断器を選定するだけで、スイッチギヤの全ての電路に高速投入装置の設置が出来る。万全を期して計画する場合には、遮断器をすべてアークエリミネータ付遮断器にすれば、漏れなくすべての電路にアークエリミネータ用高速投入装置が設置できる。
図1のフィーダ用スイッチギヤ400の内部の電路でアーク事故(F1で示す)が発生した場合に、保護リレー(図示無し)およびアーク検出装置(図示無し)が動作して、当該電路のアークエリミネータ付遮断器4へ駆動信号を発信して、事故区間の電路を切り離して、被害損傷の局所化、極少化を図るように保護システムが働く。
この時に高速投入装置の動作は、速ければ速いほうが良いので、小型で高速動作化するために1回動作に限定した単純構造の性能としているので、事故除去後には、高速投入装置2bを新しいものと取り替えるようにしている。
さらに、アークエリミネータ機能の設置を受配電設備全体の電路に対し、設備の大型化を伴うことなく、細かいメッシュで設置することが容易である。
また、アーク事故の発生に伴う高速投入装置動作後の取り換え作業も簡便であり、アーク事故が解消したのちの設備復旧が迅速に行えるので、停電時間が短く、操業ロスが少なくなる。
図6から図10は、実施の形態2によるアークエリミネータ付遮断器およびそれを適用した受配電設備を示す。
図6は、この発明を実施するための実施の形態2によるアークエリミネータ付遮断器とそれを適用した受配電設備の一例を示す単線接続図である。実施の形態2に示すアークエリミネータ付遮断器20、30、40は、図7から図10に示すように、高速投入装置が差し込み形のアークエリミネータ付遮断器となっており、アーク事故時の動作後に取り換えが必要な高速投入装置部のみを遮断器本体から装脱自在に改良したものである。
なお、図9の差込接触部30gも差込接触部20gと同様の構造で、チューリップコンタクトなどのように着脱自在の差込形接触子構造となっている。その他は、実施の形態1で説明した内容と同様の構成である。
この実施の形態2は、実施の形態1に比べて、さらに復旧作業が容易であるため、復旧時の停電時間が少なくなり、操業ロスがさらに少なくなる効果がある。
実施の形態1および実施の形態2で説明したア-クエリミネータ付遮断器およびそれを適用した受配電設備では、アークエリミネータ付遮断器(片側形)とアークエリミネータ付遮断器(両側形)を電路区画に応じて使い分けをしているが、すべての遮断器をアークエリミネータ付遮断器(両側形)としてもよい。この場合は、さらに設備計画が容易であるほか、仮に母線部の高速投入装置(例示した図1や図6で母線用が1台しかない)が動作した場合には、他のフィーダ遮断器を代替で使用することも可能となる場合があり、事故時の復旧がさらに容易で復旧時の停電時間短縮に効果がある。
Claims (7)
- 遮断器が繋がる電路にアーク事故が発生したとき、投入してアーク電流を迂回させて接地導体に流すことで事故電路部のアークを消滅させ、取り替えを要する高速投入装置を、上記遮断器の遮断部のいずれか片側極または両極に接続し、その極電路の絶縁支持物に組み込んで、全体を引き出し形としたことを特徴とするアークエリミネータ付遮断器。
- 上記高速投入装置が上記絶縁支持物に一体注型してあることを特徴とする請求項1に記載のアークエリミネータ付遮断器。
- 上記絶縁支持物を注型または成型で製作された絶縁ケース状部品として形成し、上記高速投入装置が上記絶縁ケース状部品として形成された上記絶縁支持物に組み込まれたことを特徴とする請求項1に記載のアークエリミネータ付遮断器。
- 上記絶縁支持物を注型または成型で製作された絶縁ケース状部品として形成し、上記高速投入装置が上記絶縁ケース状部品として形成された上記絶縁支持物と着脱可能に組み立てされるとともに、上記高速投入装置は上記遮断器の電路導体部との通電接続部が差込形式で構成され、上記絶縁ケース状部品として形成された上記絶縁支持物を上記遮断器に固着した状態で上記高速投入装置の取り換えができるよう構成したことを特徴とする請求項1に記載のアークエリミネータ付遮断器。
- 遮断器が繋がる電路にアーク事故が発生したとき、投入してアーク電流を迂回させて接地導体に流すことで事故電路部のアークを消滅させ、取り替えを要する高速投入装置を、上記遮断器の遮断部のいずれか片側極または両極に接続し、その極電路の絶縁支持物に組み込んで、全体を引き出し形としたアークエリミネータ付遮断器を、要所の電路区分対応に組み込んだスイッチギヤで構成した受配電設備。
- 母線部のスイッチギヤを上記高速投入装置が上記遮断器の遮断部の両極に接続された両側形のアークエリミネータ付遮断器で構成し、その他のスイッチギヤは上記高速投入装置が上記遮断器の遮断部のいずれか片側極に接続された片側形のアークエリミネータ付遮断器で構成したことを特徴とする請求項5に記載の受配電設備。
- 母線部のスイッチギヤ及びその他のスイッチギヤを上記高速投入装置が上記遮断器の遮断部の両極に接続された両側形のアークエリミネータ付遮断器で構成したことを特徴とする請求項5に記載の受配電設備。
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CN201580025292.7A CN106415960B (zh) | 2014-05-21 | 2015-04-24 | 带灭弧器的断路器以及应用该断路器的受配电设备 |
DE112015002390.9T DE112015002390B4 (de) | 2014-05-21 | 2015-04-24 | Leistungsschalter mit lichtbogen-ableiter sowie ausrüstung zum empfangen und verteilen von energie, welche diesen verwendet |
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US10381824B2 (en) | 2019-08-13 |
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KR20160121587A (ko) | 2016-10-19 |
DE112015002390T5 (de) | 2017-02-02 |
DE112015002390B4 (de) | 2022-07-21 |
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