WO2019044071A1 - Vacuum switch device and anomaly monitoring method therefor - Google Patents

Vacuum switch device and anomaly monitoring method therefor Download PDF

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Publication number
WO2019044071A1
WO2019044071A1 PCT/JP2018/020008 JP2018020008W WO2019044071A1 WO 2019044071 A1 WO2019044071 A1 WO 2019044071A1 JP 2018020008 W JP2018020008 W JP 2018020008W WO 2019044071 A1 WO2019044071 A1 WO 2019044071A1
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Prior art keywords
vacuum
position detector
switching device
stroke
lever
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PCT/JP2018/020008
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French (fr)
Japanese (ja)
Inventor
佐藤　和弘
佐藤　隆
雅人 藪
Original Assignee
株式会社日立産機システム
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Application filed by 株式会社日立産機システム filed Critical 株式会社日立産機システム
Priority to CN201880006562.3A priority Critical patent/CN110192260B/en
Priority to SG11201905688RA priority patent/SG11201905688RA/en
Publication of WO2019044071A1 publication Critical patent/WO2019044071A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to a vacuum switch and an abnormality monitoring method thereof.
  • a vacuum switch and an abnormality monitor suitable for monitoring an abnormality from a stroke characteristic of a vacuum valve of a vacuum circuit breaker and an electromagnetic actuator operating the vacuum valve On the way.
  • patent document 1 As a prior art which monitors abnormality from the stroke characteristic in a vacuum switching device, patent document 1 can be mentioned, for example.
  • Patent Document 1 discloses a method of monitoring an abnormality from the stroke characteristic of an electromagnetic operating device that operates a vacuum switching device (vacuum circuit breaker), and the upper surface of the upper drive rod of the electromagnetic operating device from the top of the case of the electromagnetic operating device.
  • the spot signal is emitted to the point, the stroke between the top and the top is detected from the angle or position of the reflected signal, the detected stroke is accumulated in time series, the movement speed is determined from the time change, and the movement speed is calculated It is described to determine the presence or absence of abnormality of the vacuum circuit breaker as compared to the transition of the normal speed.
  • the abnormality monitoring method from the stroke characteristic in the vacuum circuit breaker described in Patent Document 1 mentioned above irradiates a spot signal to the top surface of the drive rod from the top of the case of the electromagnetic actuator, and strokes from the angle or position of the reflected signal. By detecting the stroke characteristic of the electromagnetic actuator and monitoring an abnormality.
  • the present invention has been made in view of the above-described point, and the object of the present invention is to be able to grasp contact wear and contact load even during operations other than detailed inspection, and of course to not only operation of the device but also reliability for energization. It is an object of the present invention to provide an improved vacuum switching device and its abnormality monitoring method.
  • a main circuit opening / closing portion and an operation mechanism portion for operating the main circuit opening / closing portion are connected via a link mechanism portion, and the main circuit opening / closing portion is fixed
  • a vacuum conductor having a side conductor, a pair of contact points that can be attached and detached, a movable side conductor, a flexible conductor electrically connecting the vacuum valve and the movable side conductor, and a movable side of the vacuum valve vertically It consists of an insulating rod to be moved, a contact pressure spring which applies a contact load to contacts in the vacuum valve, and a lever connector which pushes up the contact pressure spring, and the operation mechanism part comprises a permanent magnet and a coil or a closing spring.
  • the mechanism portion includes a shaft provided in the link mechanism portion case, and a first lever whose one end is fixed to the shaft and whose other end is connected to the lever connection fitting of the main circuit opening / closing portion by a first pin
  • a second lever fixed at one end to the shaft and connected at the other end to the drive rod of the operation mechanism by a second pin, and the main circuit opening / closing part is covered by an insulating frame
  • the operating mechanism portion and the link mechanism portion are vacuum switching devices covered with a frame frame of ground potential, and an end face of the insulating rod opposite to the vacuum valve and the insulating frame or the frame frame A first position detector is provided between them, and the stroke characteristic of the insulating rod is detected by the first position detector, and the stroke characteristic of the insulating rod detected continuously and the insulation obtained in advance And judging the presence or absence of an abnormality by comparing the
  • the circuit opening / closing portion includes a vacuum valve having a fixed side conductor, a pair of contact points that can be separated and attached, a movable side conductor, a flexible conductor electrically connecting the vacuum valve and the movable side conductor, and the vacuum valve It comprises an insulating rod which moves the movable side in the vertical direction, a contact pressure spring which applies a contact load to contacts in the vacuum valve, and a lever connector which pushes up the contact pressure spring, and the operation mechanism part is a permanent magnet And a coil or closing spring, a controller case containing the permanent magnet and the coil or closing spring, a blocking spring for opening the contacts of the vacuum valve, and a drive rod disposed on these shafts
  • the link mechanism portion has a shaft provided at the link mechanism portion case and one end fixed to the shaft,
  • the present invention it is possible not only to be able to grasp the contact wear and the contact load even during operation other than the fine inspection, but also to improve the reliability with respect to energization as well as the operation of the device.
  • the vacuum circuit breaker which is Example 2 of the vacuum switching device of this invention is shown, and it is a side view of a disconnection state.
  • the vacuum circuit breaker which is Example 2 of the vacuum switching device of this invention is shown, and it is a side view of an entering state.
  • the vacuum circuit breaker which is Example 3 of the vacuum switching device of this invention is shown, and it is a side view of a disconnection state.
  • the vacuum circuit breaker which is Example 3 of the vacuum switching device of this invention is shown, and it is a side view of an entering state. It is a figure which shows the example of a measurement of the stroke characteristic in the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and shows the case of a closing operation. It is a figure which shows the example of a measurement of the stroke characteristic in the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and shows the case of open circuit operation
  • FIG. 1 and 2 show a vacuum circuit breaker as a first embodiment of the vacuum switchgear according to the present invention, FIG. 1 shows a cut-off state of the vacuum circuit breaker, and FIG. 2 shows an open state of the vacuum circuit breaker. ing.
  • the vacuum circuit breaker shown in FIGS. 1 and 2 is schematically configured by a main circuit switching unit 1 shown on the left side in the figure, an operation mechanism part 2 shown on the right side in the figure, and a link mechanism part 3 shown on the lower side in the figure. ing.
  • the main circuit opening / closing part 1 is covered with an insulating frame 4, and the operation mechanism part 2 and the link mechanism part 3 are covered with a housing frame 5 of ground potential.
  • the insulating frame 4 of the main circuit opening / closing portion 1 is fixed to either or both of the link mechanism portion case 6 and the operation mechanism portion case 7.
  • FIG. 1 and FIG. 2 the structure by which the main circuit switch part 1 is being fixed to the link mechanism part case 6 is shown as an example.
  • FIGS. 1 and 2 illustrate one-phase circuit breaker as a vacuum circuit breaker, however, a three-phase circuit breaker may be used. In this case, three-phase circuit breakers in the depth direction of FIGS. 1 and 2 may be used.
  • the main circuit switching unit 1 is arranged side by side.
  • the operation mechanism unit 2 exemplifies an electromagnetic operation type operation device, a closing spring is used instead of the permanent magnet 15 and the coil 16 described later, and the closing spring and the blocking spring are held by the latch mechanism. It may be a spring-operated operating device.
  • the main circuit opening / closing unit 1 described above is a flexible that electrically connects the fixed side conductor 8, the vacuum valve 9 having the pair of contact points that can freely move in and out, the movable side conductor 10, and the vacuum valve 9 and the movable side conductor 10.
  • the conductor 11, the insulating frame 4 which electrically insulates these from the operation mechanism 2 and the link mechanism 3, the insulating rod 12 which moves the movable side of the vacuum valve 9 in the vertical direction, and the contacts in the vacuum valve 9.
  • a contact pressure spring 13 for applying a contact load and a lever connection fitting 14 for pushing up the contact pressure spring 13 are provided.
  • the operation mechanism unit 2 includes a permanent magnet 15, a coil 16, an actuator case 17 accommodating the permanent magnet 15 and the coil 16, a blocking spring 18 for opening contacts of the vacuum valve 9, and the like. It is comprised with the drive rod 19 arrange
  • link mechanism portion 3 is fixed to the shaft 20 bearing on the link mechanism portion case 6 and the shaft 20, and is connected to the lever connection fitting 14 of the main circuit opening / closing portion 1 by the first pin 21.
  • a lever 22 and a second lever 24 which is similarly fixed to the shaft 20 and connected to the drive rod 19 of the operation mechanism 2 by a second pin 23 are provided.
  • the vertical linear motion of the drive rod 19 of the operation mechanism 2 is transmitted to the movable side of the vacuum valve 9 through the first lever 22 and the second lever 24, and the contact point of the vacuum valve 9 is opened and closed. Be done.
  • the first position detector 25 is disposed between the insulating rod 12 on the movable side of the vacuum valve 9 and the insulating frame 4.
  • the first position detector 25 is disposed so as to bridge between the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the insulating frame 4, and also has a first position.
  • the vacuum valve 9 side of the detector 25 is installed on the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 via the insulator 31.
  • a rolling element 32 is interposed between an end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the insulator 31.
  • the first position detector 25 described above may be disposed so as to bridge the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the housing frame 5.
  • the operation state of the insulating rod 12, that is, the stroke characteristic of the insulating rod 12 can be detected by the first position detector 25, and the stroke characteristic of the insulating rod 12 detected continuously can be obtained.
  • the stroke of the insulating rod 12 is the stroke on the movable side of the vacuum valve 9. Further, by connecting the first position detector 25 to the end face 12 a opposite to the vacuum valve 9 connected to the insulating rod 12, the insulation distance can be longer than connecting to the side surface of the insulating rod 12. The stroke characteristics of the insulating rod 12 can be detected without affecting the insulation of the vacuum circuit breaker.
  • the stroke characteristics of the insulating rod 12 obtained by continuously detecting the stroke characteristics of the insulating rod 12 and the stroke characteristics of the normal insulating rod 12 obtained in advance are compared with each other at the time of opening and closing operation of the vacuum circuit breaker. Compare at 30a.
  • the comparison device 30a As a result of comparison by the comparison device 30a, when the speed is lower than the normal value in the closing operation of the vacuum circuit breaker, it is assumed that there is an abnormality in the operating mechanism 2, an abnormality in the link mechanism 3, judge.
  • FIG. 7 and 8 show an example of measurement of the stroke characteristic in the present embodiment, where the vertical axis is the stroke and the horizontal axis is the time.
  • FIG. 7 shows the case of the closing operation
  • FIG. 8 shows the case of the opening operation.
  • the stroke characteristic in the normal case changes almost linearly, that is, at a constant speed.
  • the change in stroke characteristics will be delayed or stagnated, the speed of the relevant part will be slower than normal, and empirically normal
  • the vacuum circuit breaker is determined to be life or abnormal in the case of a change in speed that deviates by more than 20 to 40% of.
  • the stroke value of the insulating rod 12 in the closing state of the vacuum circuit breaker immediately after manufacture obtained in advance and the stroke value of the insulating rod 12 in the closing state in the vacuum circuit breaker for each opening / closing operation detected by the first position detector 25 The amount of consumption of the contact point of the vacuum valve 9 can be calculated from the magnitude of the stroke value as a result of comparison by the comparison device 30a, and the amount of consumption of the contact point of the vacuum valve 9 can be calculated. You can determine the life span of
  • FIG. 3 and 4 show a vacuum circuit breaker as a second embodiment of the vacuum switchgear according to the present invention, FIG. 3 shows the cut-off state of the vacuum circuit breaker, and FIG. 4 shows the turn-on state of the vacuum circuit breaker. ing. The description of the same parts as in the first embodiment will be omitted.
  • a second position detector 26 is provided so as to bridge the lever fitting 14 on the movable side of the vacuum valve 9 and the insulating frame 4. Is placed.
  • a protrusion that protrudes to the outside (the left side in FIGS. 3 and 4) on the side opposite to the side connected by the first lever 22 and the first pin 21 of the lever connector 14.
  • a second position detector 26 is disposed so as to bridge between the frame 14 a and the insulating frame 4.
  • the other configuration is the same as that of the first embodiment.
  • the second position detector 26 is on the opposite side to the side connected to the first lever 22 of the lever fitting 14 by the first pin 21 and is outside (left side in FIGS. 3 and 4) It may be arranged to bridge between the projecting portion 14 a and the frame 5.
  • the second position detector 26 detects the stroke characteristics of the lever fitting 14, and compares the stroke characteristics of the lever fitting 14 detected continuously with the stroke characteristics of the normal lever fitting 14 acquired in advance.
  • the presence / absence of abnormality of the vacuum circuit breaker is determined based on the magnitude of the stroke values compared by the device 30b and compared by the comparison device 30b.
  • FIG. 5 and 6 show a vacuum circuit breaker as Example 3 of the vacuum switching device according to the present invention, FIG. 5 shows a cut-off state of the vacuum circuit breaker, and FIG. 6 shows a cut-in state of the vacuum circuit breaker. ing. The description of the same parts as in the second embodiment will be omitted.
  • a third one is provided so as to bridge the drive rod 19 of the operation mechanism 2 and the controller case 17.
  • the position detector 27 is disposed.
  • the third position detector 27 is disposed so as to bridge the protruding portion 19a protruding to the right side of FIG.
  • the other configuration is the same as that of the second embodiment.
  • the stroke characteristic of the drive rod 19 of the operation mechanism 2 is detected by the third position detector 27 described above, and the stroke characteristic of the drive rod 19 detected continuously and the stroke characteristic of the normal drive rod 19 acquired in advance Are compared by the comparison device 30c to determine the presence or absence of an abnormality.
  • the first position detector 25 arranged to bridge the end face 12a of the insulating rod 12 opposite to the vacuum valve 9 and the insulating frame 4 and the first connection of the lever connecting fitting 14 Between the projecting portion 14a projecting to the outside (the left side in FIGS. 3 and 4) and the insulating frame 4 on the side opposite to the side where the bar 22 and the first pin 21 are connected.
  • the second position detector 26 Provided at the end opposite to the second position detector 26 disposed at the top, the upper surface 17a of the operation case 17 and the side connected by the second lever 24 and the second pin 23 of the drive rod 19
  • the third position detector 27 disposed so as to bridge the protrusion 19a protruding to the outside (the right side in FIGS.
  • the insulating rod 12, the lever connector 14 and the drive Detect each stroke characteristic of rod 19
  • the stroke characteristics of the insulation rod 12, the lever connection fitting 14 and the drive rod 19 detected continuously, the stroke characteristics of the normal insulation rod 12, the lever connection fitting 14 and the drive rod 19 obtained in advance and the comparison device
  • the abnormal point can be identified by comparing at 30c.
  • the power supply of the first position detector 25, the second position detector 26, and the third position detector 27 in each of the embodiments described above is input from the power supply for operating the vacuum circuit breaker. .
  • first position detector 25, the second position detector 26, and the third position detector 27 in each of the embodiments described above have strokes of the insulating rod 12, the lever fitting 14 and the drive rod 19, respectively.
  • the variable resistor interlocked with the change is used.
  • SYMBOLS 1 Main circuit switching part, 2 ... Operation mechanism part, 3 ... Link mechanism part, 4 ... Insulating frame, 5 ... Body frame, 6 ... Link mechanism part case, 7 ... Operation mechanism part case, 8 ... Fixed side conductor, 9 ... Vacuum valve, 10 ... Movable side conductor, 11 ... Flexible conductor, 12 ... Insulating rod, 12 a ... End face of insulating rod opposite to vacuum valve, 13 ... Contact pressure spring, 14 ... Lever connection fitting, 14 a ...
  • Lever connection Protruding part of the bracket 15: permanent magnet, 16: coil, 17: controller case, 17a: upper surface of the controller case, 18: blocking spring, 19: driving rod, 19a: driving rod, 20: shaft , 21 ... first pin, 22 ... first lever, 23 ... second pin, 24 ... second lever, 25 ... first position detector, 26 ... second position detector, 27 ... second 3 position detectors, 30a, 30b 30c ... comparator, 31 ... insulator, 32 ... rolling element.

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  • Gas-Insulated Switchgears (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The purpose of the present invention is to provide a vacuum switch device such that not only is it possible to assess contact wear and contact load even during operation not under detailed inspection, but the reliability of device energization as well as device operation can be improved. The present invention provides a vacuum switch device comprising a main circuit switching section and an operating mechanism section for operating the main circuit switching section which are connected by means of a linking mechanism section, wherein the main circuit switching section is covered by an insulating frame while the operating mechanism section and the linking mechanism section are covered by a chassis frame at ground potential, the vacuum switch device being characterized in that a first position detector is provided between the insulation frame or the chassis frame and an insulation rod end face on the side facing away from a vacuum valve in the main circuit switching section, the stroke characteristics of the insulation rod is detected by the first position detector, and a comparison device compares the continuously detected stroke characteristics of the insulation rod to pre-acquired normal stroke characteristics of the insulation rod to determine the presence or the absence of an anomaly.

Description

真空開閉装置及びその異常監視方法Vacuum switching device and abnormality monitoring method thereof
　本発明は真空開閉装置及びその異常監視方法に係り、例えば、真空遮断器の真空バルブ及び真空バルブを操作する電磁操作器のストローク特性から異常を監視するものに好適な真空開閉装置及びその異常監視方法に関する。 The present invention relates to a vacuum switch and an abnormality monitoring method thereof. For example, a vacuum switch and an abnormality monitor suitable for monitoring an abnormality from a stroke characteristic of a vacuum valve of a vacuum circuit breaker and an electromagnetic actuator operating the vacuum valve On the way.
　真空開閉装置におけるストローク特性から異常を監視する従来技術として、例えば、特許文献１を挙げることができる。 As a prior art which monitors abnormality from the stroke characteristic in a vacuum switching device, patent document 1 can be mentioned, for example.
　この特許文献１には、真空開閉装置（真空遮断器）を操作する電磁操作器のストローク特性から異常を監視する方法であって、電磁操作器のケース上部から電磁操作器の上部駆動ロッドの上面に対してスポット信号を照射し、その反射信号の角度または位置から上部と上面とのストロークを検出し、検出したストロークを時系列に蓄積してその時間変化から動作速度を求め、その動作速度を正常な速度の推移と比較して、真空遮断器の異常の有無を判定することが記載されている。 Patent Document 1 discloses a method of monitoring an abnormality from the stroke characteristic of an electromagnetic operating device that operates a vacuum switching device (vacuum circuit breaker), and the upper surface of the upper drive rod of the electromagnetic operating device from the top of the case of the electromagnetic operating device. The spot signal is emitted to the point, the stroke between the top and the top is detected from the angle or position of the reflected signal, the detected stroke is accumulated in time series, the movement speed is determined from the time change, and the movement speed is calculated It is described to determine the presence or absence of abnormality of the vacuum circuit breaker as compared to the transition of the normal speed.
特開２００７－１４９３６９号公報Japanese Patent Application Publication No. 2007-149369
　上述した特許文献１に記載されている真空遮断器におけるストローク特性からの異常監視方法は、電磁操作器のケースの上部から駆動ロッドの上面にスポット信号を照射し、反射信号の角度または位置からストロークを検出することで、電磁操作器のストローク特性を測定して異常を監視するものである。 The abnormality monitoring method from the stroke characteristic in the vacuum circuit breaker described in Patent Document 1 mentioned above irradiates a spot signal to the top surface of the drive rod from the top of the case of the electromagnetic actuator, and strokes from the angle or position of the reflected signal. By detecting the stroke characteristic of the electromagnetic actuator and monitoring an abnormality.
　しかしながら、この特許文献１に記載された構成は、電磁操作器の動作異常や真空バルブの気密異常は把握できるが、真空バルブの接点の消耗や接触荷重は把握できない。 However, according to the configuration described in Patent Document 1, although the operation abnormality of the electromagnetic actuator and the airtightness abnormality of the vacuum valve can be grasped, the consumption of the contacts of the vacuum valve and the contact load can not be grasped.
　通常、真空バルブの接点の消耗や接触荷重は、通常運転（通電）中における発熱に影響し、この発熱により電流遮断の性能が低下してしまうため、１年または３年周期に実施する細密点検時に真空遮断器を系統から切り離した状態で測定しているが、この測定のために真空遮断器の下位系統（工場、ビル、一般家庭等）の停電が必要になること、或は真空バルブの開閉動作が高頻度の真空遮断器は、細密点検する前に接点の消耗量や接触荷重値が判定値を超えてしまい通電性能が悪くなったり、電流遮断ができない異常状態になる恐れがあること等の問題がある。 Usually, the exhaustion of the contacts of the vacuum valve and the contact load affect the heat generation during normal operation (energization), and the heat generation degrades the current interrupting performance, so a fine inspection performed in a 1 year or 3 year cycle Sometimes it is measured with the vacuum circuit breaker disconnected from the system, but for this measurement it is necessary to shut down the sub-system (factory, building, general household etc.) of the vacuum circuit breaker, or In vacuum circuit breakers with frequent opening and closing operations, the amount of contact wear and the contact load value may exceed the judgment value before detailed inspection, which may result in deterioration of conduction performance or an abnormal state where current interruption can not be performed. There is a problem of
　本発明は上述の点に鑑みなされたもので、その目的とするところは、細密点検以外の運転中においても接点消耗や接触荷重を把握できることは勿論、装置の動作だけでなく通電に対する信頼性を向上できる真空開閉装置及びその異常監視方法を提供することにある。 The present invention has been made in view of the above-described point, and the object of the present invention is to be able to grasp contact wear and contact load even during operations other than detailed inspection, and of course to not only operation of the device but also reliability for energization. It is an object of the present invention to provide an improved vacuum switching device and its abnormality monitoring method.
　本発明の真空開閉装置は、上記目的を達成するために、主回路開閉部及び該主回路開閉部を操作する操作機構部がリンク機構部を介して連結され、前記主回路開閉部は、固定側導体と、接離自在の一対の接点を有する真空バルブと、可動側導体と、前記真空バルブと前記可動側導体を電気的に接続するフレキシブル導体と、前記真空バルブの可動側を上下方向に移動させる絶縁ロッドと、前記真空バルブ内の接点に接触荷重を加える接圧ばねと、該接圧ばねを押し上げるレバー接続金具とで構成され、前記操作機構部は、永久磁石及びコイル又は投入ばねと、該永久磁石及びとコイル又は投入ばねを収納している操作器ケースと、前記真空バルブの接点を開極する遮断ばねと、これらの軸上に配置される駆動ロッドとで構成され、前記リンク機構部は、リンク機構部ケースに設けられたシャフトと、該シャフトに一端が固定され、他端が前記主回路開閉部の前記レバー接続金具に第１のピンで連結される第１のレバーと、前記シャフトに一端が固定され、他端が前記操作機構部の前記駆動ロッドに第２のピンで連結される第２のレバーで構成され、前記主回路開閉部は絶縁フレームで覆われており、前記操作機構部及び前記リンク機構部は接地電位の筺体フレームで覆われている真空開閉装置であって、前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁フレーム又は前記筺体フレームの間に第１の位置検出器を設け、前記第１の位置検出器にて前記絶縁ロッドのストローク特性を検出し、連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする。 In the vacuum switching device according to the present invention, in order to achieve the above object, a main circuit opening / closing portion and an operation mechanism portion for operating the main circuit opening / closing portion are connected via a link mechanism portion, and the main circuit opening / closing portion is fixed A vacuum conductor having a side conductor, a pair of contact points that can be attached and detached, a movable side conductor, a flexible conductor electrically connecting the vacuum valve and the movable side conductor, and a movable side of the vacuum valve vertically It consists of an insulating rod to be moved, a contact pressure spring which applies a contact load to contacts in the vacuum valve, and a lever connector which pushes up the contact pressure spring, and the operation mechanism part comprises a permanent magnet and a coil or a closing spring. An actuator case containing the permanent magnet and a coil or a closing spring; a blocking spring for opening contacts of the vacuum valve; and a drive rod disposed on the shaft of the vacuum valve; The mechanism portion includes a shaft provided in the link mechanism portion case, and a first lever whose one end is fixed to the shaft and whose other end is connected to the lever connection fitting of the main circuit opening / closing portion by a first pin A second lever fixed at one end to the shaft and connected at the other end to the drive rod of the operation mechanism by a second pin, and the main circuit opening / closing part is covered by an insulating frame The operating mechanism portion and the link mechanism portion are vacuum switching devices covered with a frame frame of ground potential, and an end face of the insulating rod opposite to the vacuum valve and the insulating frame or the frame frame A first position detector is provided between them, and the stroke characteristic of the insulating rod is detected by the first position detector, and the stroke characteristic of the insulating rod detected continuously and the insulation obtained in advance And judging the presence or absence of an abnormality by comparing the normal stroke characteristic of the head in the comparison device.
　また、本発明の真空開閉装置の異常監視方法は、上記目的を達成するために、主回路開閉部及び該主回路開閉部を操作する操作機構部がリンク機構部を介して連結され、前記主回路開閉部は、固定側導体と、接離自在の一対の接点を有する真空バルブと、可動側導体と、前記真空バルブと前記可動側導体を電気的に接続するフレキシブル導体と、前記真空バルブの可動側を上下方向に移動させる絶縁ロッドと、前記真空バルブ内の接点に接触荷重を加える接圧ばねと、該接圧ばねを押し上げるレバー接続金具とで構成され、前記操作機構部は、永久磁石及びコイル又は投入ばねと、該永久磁石及びとコイル又は投入ばねを収納している操作器ケースと、前記真空バルブの接点を開極する遮断ばねと、これらの軸上に配置される駆動ロッドとで構成され、前記リンク機構部は、リンク機構部ケースに設けられたシャフトと、該シャフトに一端が固定され、他端が前記主回路開閉部の前記レバー接続金具に第１のピンで連結される第１のレバーと、前記シャフトに一端が固定され、他端が前記操作機構部の前記駆動ロッドに第２のピンで連結される第２のレバーで構成され、前記主回路開閉部は絶縁フレームで覆われており、前記操作機構部及び前記リンク機構部は接地電位の筺体フレームで覆われている真空開閉装置の異常を監視するに当たって、前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁フレーム又は前記筺体フレームの間に設けられた第１の位置検出器にて前記絶縁ロッドのストローク特性を検出し、連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする。 Further, in the method for monitoring abnormality of a vacuum switching device according to the present invention, in order to achieve the above object, a main circuit switching unit and an operation mechanism unit for operating the main circuit switching unit are connected via a link mechanism unit. The circuit opening / closing portion includes a vacuum valve having a fixed side conductor, a pair of contact points that can be separated and attached, a movable side conductor, a flexible conductor electrically connecting the vacuum valve and the movable side conductor, and the vacuum valve It comprises an insulating rod which moves the movable side in the vertical direction, a contact pressure spring which applies a contact load to contacts in the vacuum valve, and a lever connector which pushes up the contact pressure spring, and the operation mechanism part is a permanent magnet And a coil or closing spring, a controller case containing the permanent magnet and the coil or closing spring, a blocking spring for opening the contacts of the vacuum valve, and a drive rod disposed on these shafts The link mechanism portion has a shaft provided at the link mechanism portion case and one end fixed to the shaft, and the other end is connected to the lever connection fitting of the main circuit opening / closing portion by a first pin A first lever and a second lever whose one end is fixed to the shaft and whose other end is connected to the drive rod of the operating mechanism by a second pin, and the main circuit opening / closing part is an insulating frame When monitoring the abnormality of the vacuum switching device covered with the frame mechanism of the ground potential and the operation mechanism portion and the link mechanism portion, the end surface of the insulating rod opposite to the vacuum valve and The stroke characteristics of the insulating rod detected by the first position detector provided between the insulating frame or the housing frame, and the stroke characteristics of the insulating rod detected continuously; And judging the presence or absence of an abnormality by comparing the comparison device and normal stroke characteristic of the insulating rod which is fit acquired.
　本発明によれば、細密点検以外の運転中においても接点消耗や接触荷重を把握できることは勿論、装置の動作だけでなく通電に対する信頼性を向上できる効果がある。 According to the present invention, it is possible not only to be able to grasp the contact wear and the contact load even during operation other than the fine inspection, but also to improve the reliability with respect to energization as well as the operation of the device.
本発明の真空開閉装置の実施例１である真空遮断器を示し、切状態の側面図である。It is a side view which shows the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and is a cutting | disconnection state. 本発明の真空開閉装置の実施例１である真空遮断器を示し、入状態の側面図である。It is a side view which shows the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and is in an entering state. 本発明の真空開閉装置の実施例２である真空遮断器を示し、切状態の側面図である。The vacuum circuit breaker which is Example 2 of the vacuum switching device of this invention is shown, and it is a side view of a disconnection state. 本発明の真空開閉装置の実施例２である真空遮断器を示し、入状態の側面図である。The vacuum circuit breaker which is Example 2 of the vacuum switching device of this invention is shown, and it is a side view of an entering state. 本発明の真空開閉装置の実施例３である真空遮断器を示し、切状態の側面図である。The vacuum circuit breaker which is Example 3 of the vacuum switching device of this invention is shown, and it is a side view of a disconnection state. 本発明の真空開閉装置の実施例３である真空遮断器を示し、入状態の側面図である。The vacuum circuit breaker which is Example 3 of the vacuum switching device of this invention is shown, and it is a side view of an entering state. 本発明の真空開閉装置の実施例１である真空遮断器におけるストローク特性の測定例を示し、閉路動作の場合を示す図である。It is a figure which shows the example of a measurement of the stroke characteristic in the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and shows the case of a closing operation. 本発明の真空開閉装置の実施例１である真空遮断器におけるストローク特性の測定例を示し、開路動作の場合を示す図である。It is a figure which shows the example of a measurement of the stroke characteristic in the vacuum circuit breaker which is Example 1 of the vacuum switching device of this invention, and shows the case of open circuit operation | movement.
　以下、図示した実施例に基づいて本発明の真空開閉装置及びその異常監視方法を説明する。なお、各実施例において、同一構成部品には同符号を使用する。 Hereinafter, the vacuum switching apparatus and the abnormality monitoring method of the present invention will be described based on the illustrated embodiment. In each embodiment, the same reference numeral is used for the same component.
　図１及び図２は、本発明の真空開閉装置の実施例１として真空遮断器を示すものであり、図１は真空遮断器の切状態を、図２は真空遮断器の入状態をそれぞれ示している。 1 and 2 show a vacuum circuit breaker as a first embodiment of the vacuum switchgear according to the present invention, FIG. 1 shows a cut-off state of the vacuum circuit breaker, and FIG. 2 shows an open state of the vacuum circuit breaker. ing.
　図１及び図２に示した真空遮断器は、図中左側に示す主回路開閉部１と、図中右側に示す操作機構部２と、図中下側に示すリンク機構部３で概略構成されている。 The vacuum circuit breaker shown in FIGS. 1 and 2 is schematically configured by a main circuit switching unit 1 shown on the left side in the figure, an operation mechanism part 2 shown on the right side in the figure, and a link mechanism part 3 shown on the lower side in the figure. ing.
　主回路開閉部１は絶縁フレーム４で覆われており、操作機構部２とリンク機構部３は、接地電位の筺体フレーム５で覆われている。そして、主回路開閉部１の絶縁フレーム４は、リンク機構部ケース６、操作機構部ケース７のいずれかまたはその両方に固定されている。図１及び図２では、一例として、主回路開閉部１がリンク機構部ケース６に固定されている構成を示している。 The main circuit opening / closing part 1 is covered with an insulating frame 4, and the operation mechanism part 2 and the link mechanism part 3 are covered with a housing frame 5 of ground potential. The insulating frame 4 of the main circuit opening / closing portion 1 is fixed to either or both of the link mechanism portion case 6 and the operation mechanism portion case 7. In FIG. 1 and FIG. 2, the structure by which the main circuit switch part 1 is being fixed to the link mechanism part case 6 is shown as an example.
　なお、図１及び図２では、真空遮断器として一相遮断器を例示しているが、三相遮断器であってもよく、この場合、図１及び図２の奥行き方向に三相分の主回路開閉部１が並べて配置される構成となる。また、操作機構部２は、電磁操作式の操作器を例示しているが、後述する永久磁石１５とコイル１６に代えて投入ばねを用い、投入ばねと遮断ばねのそれぞれがラッチ機構で保持されているばね操作式の操作器でもよい。 1 and 2 illustrate one-phase circuit breaker as a vacuum circuit breaker, however, a three-phase circuit breaker may be used. In this case, three-phase circuit breakers in the depth direction of FIGS. 1 and 2 may be used. The main circuit switching unit 1 is arranged side by side. In addition, although the operation mechanism unit 2 exemplifies an electromagnetic operation type operation device, a closing spring is used instead of the permanent magnet 15 and the coil 16 described later, and the closing spring and the blocking spring are held by the latch mechanism. It may be a spring-operated operating device.
　上述した主回路開閉部１は、固定側導体８と、接離自在の一対の接点を有する真空バルブ９と、可動側導体１０と、真空バルブ９と可動側導体１０を電気的に接続するフレキシブル導体１１と、これらを操作機構部２やリンク機構部３から電気的に絶縁する絶縁フレーム４と、真空バルブ９の可動側を上下方向に移動させる絶縁ロッド１２と、真空バルブ９内の接点に接触荷重を加える接圧ばね１３と、接圧ばね１３を押し上げるレバー接続金具１４とで構成されている。 The main circuit opening / closing unit 1 described above is a flexible that electrically connects the fixed side conductor 8, the vacuum valve 9 having the pair of contact points that can freely move in and out, the movable side conductor 10, and the vacuum valve 9 and the movable side conductor 10. The conductor 11, the insulating frame 4 which electrically insulates these from the operation mechanism 2 and the link mechanism 3, the insulating rod 12 which moves the movable side of the vacuum valve 9 in the vertical direction, and the contacts in the vacuum valve 9. A contact pressure spring 13 for applying a contact load and a lever connection fitting 14 for pushing up the contact pressure spring 13 are provided.
　また、操作機構部２は、永久磁石１５と、コイル１６と、永久磁石１５及びコイル１６を収納している操作器ケース１７と、真空バルブ９の接点を開極する遮断ばね１８と、これらの軸上に配置される駆動ロッド１９とで構成されている。 Further, the operation mechanism unit 2 includes a permanent magnet 15, a coil 16, an actuator case 17 accommodating the permanent magnet 15 and the coil 16, a blocking spring 18 for opening contacts of the vacuum valve 9, and the like. It is comprised with the drive rod 19 arrange | positioned on an axis | shaft.
　更に、リンク機構部３は、リンク機構部ケース６に軸受されたシャフト２０と、シャフト２０に固定され、主回路開閉部１のレバー接続金具１４に第１のピン２１で連結される第１のレバー２２と、同じくシャフト２０に固定され、操作機構部２の駆動ロッド１９に第２のピン２３で連結される第２のレバー２４とで構成されている。 Further, the link mechanism portion 3 is fixed to the shaft 20 bearing on the link mechanism portion case 6 and the shaft 20, and is connected to the lever connection fitting 14 of the main circuit opening / closing portion 1 by the first pin 21. A lever 22 and a second lever 24 which is similarly fixed to the shaft 20 and connected to the drive rod 19 of the operation mechanism 2 by a second pin 23 are provided.
　以上の構成により、操作機構部２の駆動ロッド１９の上下方向の直線運動が第１のレバー２２及び第２のレバー２４を介して真空バルブ９の可動側に伝わり、真空バルブ９の接点が開閉される。 According to the above configuration, the vertical linear motion of the drive rod 19 of the operation mechanism 2 is transmitted to the movable side of the vacuum valve 9 through the first lever 22 and the second lever 24, and the contact point of the vacuum valve 9 is opened and closed. Be done.
　そして、本実施例では、真空バルブ９の可動側の絶縁ロッド１２と絶縁フレーム４の間に第１の位置検出器２５を配置した構成となっている。 Further, in the present embodiment, the first position detector 25 is disposed between the insulating rod 12 on the movable side of the vacuum valve 9 and the insulating frame 4.
　具体的には、第１の位置検出器２５は、絶縁ロッド１２の真空バルブ９とは反対側の端面１２ａと絶縁フレーム４との間に橋架するように配置されていると共に、第１の位置検出器２５の真空バルブ９側は、絶縁ロッド１２の真空バルブ９とは反対側の端面１２ａに絶縁物３１を介して設置されている。更に、絶縁ロッド１２の真空バルブ９とは反対側の端面１２ａと絶縁物３１との間に転動体３２が介在されている。 Specifically, the first position detector 25 is disposed so as to bridge between the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the insulating frame 4, and also has a first position. The vacuum valve 9 side of the detector 25 is installed on the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 via the insulator 31. Furthermore, a rolling element 32 is interposed between an end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the insulator 31.
　なお、上述した第１の位置検出器２５は、絶縁ロッド１２の真空バルブ９とは反対側の端面１２ａと筺体フレーム５との間に橋架するように配置してもよい。 The first position detector 25 described above may be disposed so as to bridge the end face 12 a of the insulating rod 12 opposite to the vacuum valve 9 and the housing frame 5.
　この第１の位置検出器２５にて絶縁ロッド１２の動作状態、即ち、絶縁ロッド１２のストローク特性を検出し、連続的に検出した絶縁ロッド１２のストローク特性を取得することができる。 The operation state of the insulating rod 12, that is, the stroke characteristic of the insulating rod 12 can be detected by the first position detector 25, and the stroke characteristic of the insulating rod 12 detected continuously can be obtained.
　上述した絶縁ロッド１２は、真空バルブ９の可動側に直接接続されているため、絶縁ロッド１２のストロークは、真空バルブ９の可動側のストロークである。また、第１の位置検出器２５を、絶縁ロッド１２に接続される真空バルブ９とは反対側の端面１２ａに接続することで、絶縁ロッド１２の側面に接続するよりも絶縁距離が長く取れるので、真空遮断器の絶縁に影響せずに絶縁ロッド１２のストローク特性を検出できる。 Since the insulating rod 12 described above is directly connected to the movable side of the vacuum valve 9, the stroke of the insulating rod 12 is the stroke on the movable side of the vacuum valve 9. Further, by connecting the first position detector 25 to the end face 12 a opposite to the vacuum valve 9 connected to the insulating rod 12, the insulation distance can be longer than connecting to the side surface of the insulating rod 12. The stroke characteristics of the insulating rod 12 can be detected without affecting the insulation of the vacuum circuit breaker.
　このようにして真空遮断器の開閉動作時に、絶縁ロッド１２のストローク特性を連続的に検出して取得した絶縁ロッド１２のストローク特性と、予め取得した正常な絶縁ロッド１２のストローク特性とを比較装置３０ａで比較する。比較装置３０ａで比較した結果、真空遮断器の投入動作において正常値に対し速度が遅くなった場合は、操作機構部２の異常、リンク機構部３の異常、真空バルブ９の圧力異常であると判定する。 In this manner, the stroke characteristics of the insulating rod 12 obtained by continuously detecting the stroke characteristics of the insulating rod 12 and the stroke characteristics of the normal insulating rod 12 obtained in advance are compared with each other at the time of opening and closing operation of the vacuum circuit breaker. Compare at 30a. As a result of comparison by the comparison device 30a, when the speed is lower than the normal value in the closing operation of the vacuum circuit breaker, it is assumed that there is an abnormality in the operating mechanism 2, an abnormality in the link mechanism 3, judge.
　図７及び図８は、本実施例におけるストローク特性の測定例を示し、縦軸がストローク、横軸が時間である。図７は閉路動作の場合、図８は開路動作の場合である。 7 and 8 show an example of measurement of the stroke characteristic in the present embodiment, where the vertical axis is the stroke and the horizontal axis is the time. FIG. 7 shows the case of the closing operation, and FIG. 8 shows the case of the opening operation.
　該図に示すように、正常な場合（実線）のストローク特性はほぼ直線的に、即ち、一定速度で変化する。一方、真空遮断器の動作に異常があると、点線で示すように、ストローク特性の変化に遅延乃至停滞が生じ、当該部の速度は、正常時に比べて遅くなり、経験的には、正常時の２０～４０％を超えて外れる速度変化の場合に、真空遮断器は寿命ないし異常と判定される。 As shown in the figure, the stroke characteristic in the normal case (solid line) changes almost linearly, that is, at a constant speed. On the other hand, if there is an abnormality in the operation of the vacuum circuit breaker, as shown by the dotted line, the change in stroke characteristics will be delayed or stagnated, the speed of the relevant part will be slower than normal, and empirically normal The vacuum circuit breaker is determined to be life or abnormal in the case of a change in speed that deviates by more than 20 to 40% of.
　また、予め取得した製作直後の真空遮断器の投入状態における絶縁ロッド１２のストローク値と、第１の位置検出器２５で検出した開閉動作毎の真空遮断器における投入状態の絶縁ロッド１２のストローク値とを比較装置３０ａで比較し、比較装置３０ａで比較した結果のストローク値の大小により、真空バルブ９の接点の消耗量を算出することができ、真空バルブ９の接点の消耗量をもって真空バルブ９の寿命を判断することができる。 In addition, the stroke value of the insulating rod 12 in the closing state of the vacuum circuit breaker immediately after manufacture obtained in advance and the stroke value of the insulating rod 12 in the closing state in the vacuum circuit breaker for each opening / closing operation detected by the first position detector 25 The amount of consumption of the contact point of the vacuum valve 9 can be calculated from the magnitude of the stroke value as a result of comparison by the comparison device 30a, and the amount of consumption of the contact point of the vacuum valve 9 can be calculated. You can determine the life span of
　このような本実施例とすることにより、細密点検以外の運転中においても真空バルブ９の接点消耗や接触荷重を把握できることは勿論、真空遮断器の動作だけでなく通電に対する信頼性を向上できる。 By adopting such a present embodiment, it is possible not only to be able to grasp the contact wear and the contact load of the vacuum valve 9 even during operation other than the fine inspection, but also to improve the reliability with respect to energization as well as the operation of the vacuum circuit breaker.
　図３及び図４は、本発明の真空開閉装置の実施例２として真空遮断器を示すものであり、図３は真空遮断器の切状態を、図４は真空遮断器の入状態をそれぞれ示している。なお、実施例１と同様な部分については説明を省略する。 3 and 4 show a vacuum circuit breaker as a second embodiment of the vacuum switchgear according to the present invention, FIG. 3 shows the cut-off state of the vacuum circuit breaker, and FIG. 4 shows the turn-on state of the vacuum circuit breaker. ing. The description of the same parts as in the first embodiment will be omitted.
　本実施例では、実施例１で示した第１の位置検出器２５の他に、真空バルブ９の可動側のレバー接続金具１４と絶縁フレーム４とに橋架するように第２の位置検出器２６を配置している。 In this embodiment, in addition to the first position detector 25 shown in the first embodiment, a second position detector 26 is provided so as to bridge the lever fitting 14 on the movable side of the vacuum valve 9 and the insulating frame 4. Is placed.
　具体的には、レバー接続金具１４の第１のレバー２２と第１のピン２１で連結される側とは反対側で、かつ、外側（図３及び図４の左側）に突出している突出部１４ａと絶縁フレーム４との間に橋架するように第２の位置検出器２６を配置している。他の構成は、実施例１と同様である。 Specifically, a protrusion that protrudes to the outside (the left side in FIGS. 3 and 4) on the side opposite to the side connected by the first lever 22 and the first pin 21 of the lever connector 14. A second position detector 26 is disposed so as to bridge between the frame 14 a and the insulating frame 4. The other configuration is the same as that of the first embodiment.
　なお、第２の位置検出器２６は、レバー接続金具１４の第１のレバー２２と第１のピン２１で連結される側とは反対側で、かつ、外側（図３及び図４の左側）に突出している突出部１４ａと筺体フレーム５とに橋架するように配置してもよい。 The second position detector 26 is on the opposite side to the side connected to the first lever 22 of the lever fitting 14 by the first pin 21 and is outside (left side in FIGS. 3 and 4) It may be arranged to bridge between the projecting portion 14 a and the frame 5.
　この第２の位置検出器２６にてレバー接続金具１４のストローク特性を検出し、連続的に検出したレバー接続金具１４のストローク特性と、予め取得した正常なレバー接続金具１４のストローク特性とを比較装置３０ｂで比較し、比較装置３０ｂで比較したストローク値の大小により真空遮断器の異常の有無を判定している。 The second position detector 26 detects the stroke characteristics of the lever fitting 14, and compares the stroke characteristics of the lever fitting 14 detected continuously with the stroke characteristics of the normal lever fitting 14 acquired in advance. The presence / absence of abnormality of the vacuum circuit breaker is determined based on the magnitude of the stroke values compared by the device 30b and compared by the comparison device 30b.
　また、真空遮断器の投入状態において、絶縁ロッド１２の真空バルブ９とは反対側の端面と絶縁フレーム４とに橋架するように配置した第１の位置検出器２５で検出した絶縁ロッド１２のストローク値と、レバー接続金具１４の第１のレバー２２と第１のピン２１で連結される側とは反対側で、かつ、外側（図３及び図４の左側）に突出している突出部１４ａと絶縁フレーム４との間に橋架するように配置した第２の位置検出器２６で検出したレバー接続金具１４のストローク値の差分値を、予め取得した正常な差分値と比較装置３０ｂで比較することで、上述した実施例１の構成による効果に加え、接圧ばね１３の縮み量、即ち、真空バルブ９の接点の接触荷重を把握できるため、予め取得した接触荷重と接触抵抗の関係から発熱を推定することができる。 In addition, in the closed state of the vacuum circuit breaker, the stroke of the insulating rod 12 detected by the first position detector 25 arranged to bridge the end face of the insulating rod 12 opposite to the vacuum valve 9 and the insulating frame 4 And a projecting portion 14a which protrudes to the outside (left side in FIGS. 3 and 4) on the opposite side of the side of the lever fitting 14 to which the first lever 22 and the first pin 21 are connected. Comparing the difference value of the stroke value of the lever fitting 14 detected by the second position detector 26 disposed so as to bridge with the insulating frame 4 with the normal difference value acquired in advance by the comparison device 30 b In addition to the effects of the configuration of the first embodiment described above, the amount of contraction of the contact pressure spring 13, that is, the contact load of the contact point of the vacuum valve 9 can be grasped. Estimate Rukoto can.
　図５及び図６は、本発明の真空開閉装置の実施例３として真空遮断器を示すものであり、図５は真空遮断器の切状態を、図６は真空遮断器の入状態をそれぞれ示している。なお、実施例２と同様な部分については説明を省略する。 5 and 6 show a vacuum circuit breaker as Example 3 of the vacuum switching device according to the present invention, FIG. 5 shows a cut-off state of the vacuum circuit breaker, and FIG. 6 shows a cut-in state of the vacuum circuit breaker. ing. The description of the same parts as in the second embodiment will be omitted.
　本実施例では、実施例２で示した第１の位置検出器２５及び第２の位置検出器２６の他に、操作機構部２の駆動ロッド１９と操作器ケース１７に橋架するように第３の位置検出器２７を配置したものである。 In the present embodiment, in addition to the first position detector 25 and the second position detector 26 shown in the second embodiment, a third one is provided so as to bridge the drive rod 19 of the operation mechanism 2 and the controller case 17. The position detector 27 is disposed.
　具体的には、操作器ケース１７の上部面１７ａと駆動ロッド１９の第２のレバー２４と第２のピン２３で連結される側とは反対側の先端に設けられ、かつ、外側（図５及び図６の右側）に突出している突出部１９ａとの間に橋架するように第３の位置検出器２７を配置している。他の構成は、実施例２と同様である。 Specifically, it is provided on the tip of the upper surface 17a of the operation case 17 and on the side opposite to the side connected by the second lever 24 and the second pin 23 of the drive rod 19 and outside (FIG. The third position detector 27 is disposed so as to bridge the protruding portion 19a protruding to the right side of FIG. The other configuration is the same as that of the second embodiment.
　上述した第３の位置検出器２７にて操作機構部２の駆動ロッド１９のストローク特性を検出し、連続的に検出した駆動ロッド１９のストローク特性と、予め取得した正常な駆動ロッド１９のストローク特性とを比較装置３０ｃで比較して、異常の有無を判定している。 The stroke characteristic of the drive rod 19 of the operation mechanism 2 is detected by the third position detector 27 described above, and the stroke characteristic of the drive rod 19 detected continuously and the stroke characteristic of the normal drive rod 19 acquired in advance Are compared by the comparison device 30c to determine the presence or absence of an abnormality.
　即ち、本実施例では、絶縁ロッド１２の真空バルブ９とは反対側の端面１２ａと絶縁フレーム４とに橋架するように配置した第１の位置検出器２５と、レバー接続金具１４のレ第１のバー２２と第１のピン２１で連結される側とは反対側で、かつ、外側（図３及び図４の左側）に突出している突出部１４ａと絶縁フレーム４との間に橋架するように配置した第２の位置検出器２６と、操作器ケース１７の上部面１７ａと駆動ロッド１９の第２のレバー２４と第２のピン２３で連結される側とは反対側の先端に設けられ、かつ、外側（図５及び図６の右側）に突出している突出部１９ａとの間に橋架するように配置した第３の位置検出器２７とで、絶縁ロッド１２、レバー接続金具１４及び駆動ロッド１９のそれぞれのストローク特性を検出し、連続的に検出した絶縁ロッド１２、レバー接続金具１４及び駆動ロッド１９のそれぞれのストローク特性を、予め取得した正常な絶縁ロッド１２、レバー接続金具１４及び駆動ロッド１９のそれぞれのストローク特性と比較装置３０ｃで比較することで、異常箇所を特定することができる。 That is, in this embodiment, the first position detector 25 arranged to bridge the end face 12a of the insulating rod 12 opposite to the vacuum valve 9 and the insulating frame 4 and the first connection of the lever connecting fitting 14 Between the projecting portion 14a projecting to the outside (the left side in FIGS. 3 and 4) and the insulating frame 4 on the side opposite to the side where the bar 22 and the first pin 21 are connected. Provided at the end opposite to the second position detector 26 disposed at the top, the upper surface 17a of the operation case 17 and the side connected by the second lever 24 and the second pin 23 of the drive rod 19 And the third position detector 27 disposed so as to bridge the protrusion 19a protruding to the outside (the right side in FIGS. 5 and 6), the insulating rod 12, the lever connector 14 and the drive Detect each stroke characteristic of rod 19 The stroke characteristics of the insulation rod 12, the lever connection fitting 14 and the drive rod 19 detected continuously, the stroke characteristics of the normal insulation rod 12, the lever connection fitting 14 and the drive rod 19 obtained in advance and the comparison device The abnormal point can be identified by comparing at 30c.
　このような本実施例とすることにより、細密点検以外の運転中においても真空バルブ９の接点消耗や接触荷重を把握できることは勿論、真空遮断器の動作だけでなく通電に対する信頼性を更に向上できる。 By adopting such a present embodiment, it is possible not only to be able to grasp the contact wear and contact load of the vacuum valve 9 even during operation other than fine inspection, but also to further improve not only the operation of the vacuum circuit breaker but also the reliability for energization. .
　なお、上述した各実施例における第１の位置検出器２５、第２の位置検出器２６及び第３の位置検出器２７は、その電源が真空遮断器の操作用電源から入力されるものである。 The power supply of the first position detector 25, the second position detector 26, and the third position detector 27 in each of the embodiments described above is input from the power supply for operating the vacuum circuit breaker. .
　また、上述した各実施例における第１の位置検出器２５、第２の位置検出器２６及び第３の位置検出器２７は、絶縁ロッド１２、レバー接続金具１４及び駆動ロッド１９のそれぞれのストロークの変化に連動する可変抵抗器を用いている。 Further, the first position detector 25, the second position detector 26, and the third position detector 27 in each of the embodiments described above have strokes of the insulating rod 12, the lever fitting 14 and the drive rod 19, respectively. The variable resistor interlocked with the change is used.
　なお、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。 The above embodiments are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. In addition, with respect to a part of the configuration of each embodiment, it is possible to add, delete, and replace other configurations.
　１…主回路開閉部、２…操作機構部、３…リンク機構部、４…絶縁フレーム、５…筺体フレーム、６…リンク機構部ケース、７…操作機構部ケース、８…固定側導体、９…真空バルブ、１０…可動側導体、１１…フレキシブル導体、１２…絶縁ロッド、１２ａ…絶縁ロッドの真空バルブとは反対側の端面、１３…接圧ばね、１４…レバー接続金具、１４ａ…レバー接続金具の突出部、１５…永久磁石、１６…コイル、１７…操作器ケース、１７ａ…操作器ケースの上面部、１８…遮断ばね、１９…駆動ロッド、１９ａ…駆動ロッドの突出部、２０…シャフト、２１…第１のピン、２２…第１のレバー、２３…第２のピン、２４…第２のレバー、２５…第１の位置検出器、２６…第２の位置検出器、２７…第３の位置検出器、３０ａ、３０ｂ、３０ｃ…比較装置、３１…絶縁物、３２…転動体。 DESCRIPTION OF SYMBOLS 1 ... Main circuit switching part, 2 ... Operation mechanism part, 3 ... Link mechanism part, 4 ... Insulating frame, 5 ... Body frame, 6 ... Link mechanism part case, 7 ... Operation mechanism part case, 8 ... Fixed side conductor, 9 ... Vacuum valve, 10 ... Movable side conductor, 11 ... Flexible conductor, 12 ... Insulating rod, 12 a ... End face of insulating rod opposite to vacuum valve, 13 ... Contact pressure spring, 14 ... Lever connection fitting, 14 a ... Lever connection Protruding part of the bracket, 15: permanent magnet, 16: coil, 17: controller case, 17a: upper surface of the controller case, 18: blocking spring, 19: driving rod, 19a: driving rod, 20: shaft , 21 ... first pin, 22 ... first lever, 23 ... second pin, 24 ... second lever, 25 ... first position detector, 26 ... second position detector, 27 ... second 3 position detectors, 30a, 30b 30c ... comparator, 31 ... insulator, 32 ... rolling element.

Claims (21)

  1. 　主回路開閉部及び該主回路開閉部を操作する操作機構部がリンク機構部を介して連結され、
    　前記主回路開閉部は、固定側導体と、接離自在の一対の接点を有する真空バルブと、可動側導体と、前記真空バルブと前記可動側導体を電気的に接続するフレキシブル導体と、前記真空バルブの可動側を上下方向に移動させる絶縁ロッドと、前記真空バルブ内の接点に接触荷重を加える接圧ばねと、該接圧ばねを押し上げるレバー接続金具とで構成され、　前記操作機構部は、永久磁石及びコイル又は投入ばねと、該永久磁石及びとコイル又は投入ばねを収納している操作器ケースと、前記真空バルブの接点を開極する遮断ばねと、これらの軸上に配置される駆動ロッドとで構成され、
    　前記リンク機構部は、リンク機構部ケースに設けられたシャフトと、該シャフトに一端が固定され、他端が前記主回路開閉部の前記レバー接続金具に第１のピンで連結される第１のレバーと、前記シャフトに一端が固定され、他端が前記操作機構部の前記駆動ロッドに第２のピンで連結される第２のレバーで構成され、
    　前記主回路開閉部は絶縁フレームで覆われており、前記操作機構部及び前記リンク機構部は接地電位の筺体フレームで覆われている真空開閉装置であって、
    　前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁フレーム又は前記筺体フレームの間に第１の位置検出器を設け、前記第１の位置検出器にて前記絶縁ロッドのストローク特性を検出し、連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする真空開閉装置。     A main circuit opening / closing unit and an operation mechanism unit for operating the main circuit opening / closing unit are connected via a link mechanism unit;
    The main circuit opening / closing portion includes a fixed conductor, a vacuum valve having a pair of contacts that can be freely moved, a movable conductor, a flexible conductor that electrically connects the vacuum valve and the movable conductor, and the vacuum It comprises: an insulating rod for moving the movable side of the valve in the vertical direction; a pressure contact spring which applies a contact load to the contact in the vacuum valve; and a lever connector which pushes up the contact pressure spring. A permanent magnet and a coil or a closing spring, a controller case containing the permanent magnet and the coil or the closing spring, a blocking spring for opening contacts of the vacuum valve, and a drive disposed on these shafts Composed of rods and
    The link mechanism portion has a shaft provided at the link mechanism portion case, and one end fixed to the shaft, and the other end is connected by a first pin to the lever connection fitting of the main circuit opening / closing portion. A lever, and a second lever fixed at one end to the shaft and connected at the other end to the drive rod of the operation mechanism by a second pin;
    The main circuit opening and closing part is covered with an insulating frame, and the operation mechanism part and the link mechanism part are vacuum opening and closing devices covered with a frame frame of ground potential,
    A first position detector is provided between the end face of the insulating rod opposite to the vacuum valve and the insulating frame or the casing frame, and the stroke characteristic of the insulating rod is detected by the first position detector And a comparison device compares the stroke characteristics of the insulating rod detected continuously with the normal stroke characteristics of the insulating rod acquired in advance to determine the presence or absence of an abnormality.
  2. 　請求項１に記載の真空開閉装置であって、
    　前記第１の位置検出器は、前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁フレーム又は前記筺体フレームとの間に橋架するように配置されていることを特徴とする真空開閉装置。     The vacuum switching device according to claim 1, wherein
    The vacuum switching device according to claim 1, wherein the first position detector is arranged to bridge between an end face of the insulating rod opposite to the vacuum valve and the insulating frame or the housing frame. .
  3. 　請求項１に記載の真空開閉装置であって、
    　前記第１の位置検出器で連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを前記比較装置で比較した結果、前記真空開閉装置の投入動作において正常値に対し速度が遅くなった場合は、前記操作機構部の異常、前記リンク機構部の異常、或は前記真空バルブの圧力異常であると判定することを特徴とする真空開閉装置。     The vacuum switching device according to claim 1, wherein
    As a result of comparing the stroke characteristics of the insulating rod continuously detected by the first position detector with the normal stroke characteristics of the insulating rod acquired in advance by the comparison device, in the closing operation of the vacuum switching device When the speed is lower than the normal value, it is determined that the operation mechanism section is abnormal, the link mechanism section is abnormal, or the pressure of the vacuum valve is abnormal.
  4. 　請求項１に記載の真空開閉装置であって、
    　前記第１の位置検出器で検出した開閉動作毎の前記真空開閉装置における投入状態の前記絶縁ロッドのストローク値と、予め取得した前記真空開閉装置の投入状態における前記絶縁ロッドのストローク値とを前記比較装置で比較し、前記比較装置で比較した結果のストローク値の大小により、前記真空バルブの接点の消耗量を算出することで前記真空バルブの寿命を判断することを特徴とする真空開閉装置。     The vacuum switching device according to claim 1, wherein
    The stroke value of the insulating rod in the closed state in the vacuum switching device for each opening and closing operation detected by the first position detector and the stroke value of the insulating rod in the closed state of the vacuum switching device obtained in advance are the above A vacuum switching device characterized in that the life of the vacuum valve is determined by calculating the amount of wear of the contact point of the vacuum valve based on the magnitude of the stroke value compared by the comparison device and comparing with the comparison device.
  5. 　請求項１に記載の真空開閉装置であって、
    　前記真空バルブの可動側の前記レバー接続金具と前記絶縁フレーム又は前記筺体フレームの間に第２の位置検出器を設け、前記第２の位置検出器にて前記レバー接続金具のストローク特性を検出し、連続的に検出した前記レバー接続金具のストローク特性と、予め取得した前記レバー接続金具の正常なストローク特性とを前記比較装置で比較し、前記比較装置で比較したストローク値の大小により異常の有無を判定することを特徴とする真空開閉装置。     The vacuum switching device according to claim 1, wherein
    A second position detector is provided between the lever fitting on the movable side of the vacuum valve and the insulating frame or the casing frame, and the stroke characteristic of the lever fitting is detected by the second position detector. The comparison device compares the stroke characteristics of the lever connection fitting detected continuously with the normal stroke characteristics of the lever connection fitting acquired in advance, and the presence or absence of abnormality due to the magnitude of the stroke value compared by the comparison device A vacuum switching device characterized by determining.
  6. 　請求項５に記載の真空開閉装置であって、
    　前記第２の位置検出器は、前記レバー接続金具の前記第１のレバーと前記第１のピンで連結される側とは反対側で、かつ、外側に突出している突出部と前記絶縁フレーム又は前記筺体フレームとの間に橋架するように配置されていることを特徴とする真空開閉装置。     The vacuum switching device according to claim 5, wherein
    The second position detector is provided on the side opposite to the side connected by the first lever of the lever fitting and the first pin, and a protrusion which protrudes outward and the insulating frame or A vacuum switching device characterized in that it is arranged to bridge between the frame and the frame.
  7. 　請求項５に記載の真空開閉装置であって、
    　前記第１の位置検出器で検出した前記絶縁ロッドのストローク値と、前記第２の位置検出器で検出した前記レバー接続金具のストローク値との差分値を、予め取得した正常な差分値と前記比較装置で比較することで、前記真空バルブの接点の接触荷重を把握することを特徴とする真空開閉装置。     The vacuum switching device according to claim 5, wherein
    The difference value between the stroke value of the insulating rod detected by the first position detector and the stroke value of the lever connection fitting detected by the second position detector is a previously obtained normal difference value and the difference value A vacuum switching device characterized by grasping the contact load of the contact point of the vacuum valve by comparing with a comparison device.
  8. 　請求項５に記載の真空開閉装置であって、
    　前記操作機構部の前記駆動ロッドと前記操作器ケースの間に第３の位置検出器を設け、前記第３の位置検出器にて前記操作機構部の前記駆動ロッドのストローク特性を検出し、連続的に検出した前記駆動ロッドのストローク特性と、予め取得した正常な前記駆動ロッドのストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする真空開閉装置。     The vacuum switching device according to claim 5, wherein
    A third position detector is provided between the drive rod of the operation mechanism and the actuator case, and the stroke characteristic of the drive rod of the operation mechanism is detected by the third position detector, and continuous operation is performed. A vacuum switching device characterized by comparing a stroke characteristic of the drive rod detected in a random manner with a stroke characteristic of a normal drive rod acquired in advance by a comparison device to determine the presence or absence of an abnormality.
  9. 　請求項８に記載の真空開閉装置であって、
    　前記第３の位置検出器は、前記操作器ケースの上部面と、前記駆動ロッドの前記第２のレバーと前記第２のピンで連結される側とは反対側の先端に設けられ、かつ、外側に突出している突出部との間に橋架するように配置されていることを特徴とする真空開閉装置。     The vacuum switching device according to claim 8, wherein
    The third position detector is provided on an upper surface of the controller case and on a tip opposite to a side connected to the second lever of the drive rod and the second pin, and A vacuum switching device characterized in that it is arranged to bridge between it and an outwardly projecting projection.
  10. 　請求項８に記載の真空開閉装置であって、
    　前記第１の位置検出器、前記第２の位置検出器及び前記第３の位置検出器で、前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性を検出し、連続的に検出した前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性と、予め取得した正常な前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性とを前記比較装置で比較して異常箇所を特定することを特徴とする真空開閉装置。     The vacuum switching device according to claim 8, wherein
    The stroke characteristics of the insulating rod, the lever fitting and the drive rod are detected and detected continuously by the first position detector, the second position detector, and the third position detector. The comparison device compares the stroke characteristics of each of the insulating rod, the lever fitting, and the drive rod with the stroke characteristics of the insulating rod, the lever fitting, and the drive rod obtained in advance, respectively. A vacuum switching device characterized in that an abnormal part is identified.
  11. 　請求項１に記載の真空開閉装置であって、
    　前記第１の位置検出器の前記真空バルブ側は、前記絶縁ロッドの前記真空バルブとは反対側の端面に絶縁物を介して設置されていることを特徴とする真空開閉装置。     The vacuum switching device according to claim 1, wherein
    The vacuum switching device according to claim 1, wherein the vacuum valve side of the first position detector is installed on an end face of the insulating rod opposite to the vacuum valve via an insulator.
  12. 　請求項１１に記載の真空開閉装置であって、
    　前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁物との間に転動体が介在されていることを特徴とする真空開閉装置。     The vacuum switching device according to claim 11, wherein
    A rolling element is interposed between an end face of the insulating rod opposite to the vacuum valve and the insulator.
  13. 　請求項１０に記載の真空開閉装置であって、
    　前記第１の位置検出器、前記第２の位置検出器及び前記第３の位置検出器は、その電源が前記真空開閉装置の操作用電源から入力されることを特徴とする真空開閉装置。     The vacuum switching device according to claim 10, wherein
    A vacuum switchgear according to any one of the first position detector, the second position detector, and the third position detector, wherein the power supply is inputted from a power supply for operating the vacuum switchgear.
  14. 　請求項１３に記載の真空開閉装置であって、
    　前記第１の位置検出器、前記第２の位置検出器及び前記第３の位置検出器は、前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストロークの変化に連動する可変抵抗器であることを特徴とする真空開閉装置。     The vacuum switching device according to claim 13, wherein
    The first position detector, the second position detector, and the third position detector are variable resistors interlocked with changes in strokes of the insulating rod, the lever fitting, and the drive rod, respectively. A vacuum switching device characterized in that
  15. 　主回路開閉部及び該主回路開閉部を操作する操作機構部がリンク機構部を介して連結され、
    　前記主回路開閉部は、固定側導体と、接離自在の一対の接点を有する真空バルブと、可動側導体と、前記真空バルブと前記可動側導体を電気的に接続するフレキシブル導体と、前記真空バルブの可動側を上下方向に移動させる絶縁ロッドと、前記真空バルブ内の接点に接触荷重を加える接圧ばねと、該接圧ばねを押し上げるレバー接続金具とで構成され、　前記操作機構部は、永久磁石及びコイル又は投入ばねと、該永久磁石及びとコイル又は投入ばねを収納している操作器ケースと、前記真空バルブの接点を開極する遮断ばねと、これらの軸上に配置される駆動ロッドとで構成され、
    　前記リンク機構部は、リンク機構部ケースに設けられたシャフトと、該シャフトに一端が固定され、他端が前記主回路開閉部の前記レバー接続金具に第１のピンで連結される第１のレバーと、前記シャフトに一端が固定され、他端が前記操作機構部の前記駆動ロッドに第２のピンで連結される第２のレバーで構成され、
    　前記主回路開閉部は絶縁フレームで覆われており、前記操作機構部及び前記リンク機構部は接地電位の筺体フレームで覆われている真空開閉装置の異常を監視するに当たって、　前記絶縁ロッドの前記真空バルブとは反対側の端面と前記絶縁フレーム又は前記筺体フレームの間に設けられた第１の位置検出器にて前記絶縁ロッドのストローク特性を検出し、連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする真空開閉装置の異常監視方法。     A main circuit opening / closing unit and an operation mechanism unit for operating the main circuit opening / closing unit are connected via a link mechanism unit;
    The main circuit opening / closing portion includes a fixed conductor, a vacuum valve having a pair of contacts that can be freely moved, a movable conductor, a flexible conductor that electrically connects the vacuum valve and the movable conductor, and the vacuum It comprises: an insulating rod for moving the movable side of the valve in the vertical direction; a pressure contact spring which applies a contact load to the contact in the vacuum valve; and a lever connector which pushes up the contact pressure spring. A permanent magnet and a coil or a closing spring, a controller case containing the permanent magnet and the coil or the closing spring, a blocking spring for opening contacts of the vacuum valve, and a drive disposed on these shafts Composed of rods and
    The link mechanism portion has a shaft provided at the link mechanism portion case, and one end fixed to the shaft, and the other end is connected by a first pin to the lever connection fitting of the main circuit opening / closing portion. A lever, and a second lever fixed at one end to the shaft and connected at the other end to the drive rod of the operation mechanism by a second pin;
    The main circuit opening / closing portion is covered with an insulating frame, and the operation mechanism portion and the link mechanism portion are used to monitor an abnormality of a vacuum switching device covered with a frame frame of ground potential. A stroke characteristic of the insulating rod detected continuously by detecting a stroke characteristic of the insulating rod by an end face opposite to the valve and a first position detector provided between the insulating frame or the frame frame A method of monitoring abnormality of a vacuum switching device, comprising comparing a normal stroke characteristic of the insulating rod acquired in advance with a comparison device to determine the presence or absence of an abnormality.
  16. 　請求項１５に記載の真空開閉装置の異常監視方法であって、
    　前記第１の位置検出器で連続的に検出した前記絶縁ロッドのストローク特性と、予め取得した前記絶縁ロッドの正常なストローク特性とを前記比較装置で比較した結果、前記真空開閉装置の投入動作において正常値に対し速度が遅くなった場合は、前記操作機構部の異常、前記リンク機構部の異常、或は前記真空バルブの圧力異常であると判定することを特徴とする真空開閉装置の異常監視方法。     16. The method for monitoring abnormality of a vacuum switchgear according to claim 15, wherein
    As a result of comparing the stroke characteristics of the insulating rod continuously detected by the first position detector with the normal stroke characteristics of the insulating rod acquired in advance by the comparison device, in the closing operation of the vacuum switching device When the speed is lower than the normal value, it is determined that the operation mechanism section is abnormal, the link mechanism section is abnormal, or the pressure of the vacuum valve is abnormal. Method.
  17. 　請求項１５に記載の真空開閉装置の異常監視方法であって、
    　前記第１の位置検出器で検出した開閉動作毎の前記真空開閉装置における投入状態の前記絶縁ロッドのストローク値と、予め取得した前記真空開閉装置の投入状態における前記絶縁ロッドのストローク値とを前記比較装置で比較し、前記比較装置で比較した結果のストローク値の大小により、前記真空バルブの接点の消耗量を算出することで前記真空バルブの寿命を判断することを特徴とする真空開閉装置の異常監視方法。     16. The method for monitoring abnormality of a vacuum switchgear according to claim 15, wherein
    The stroke value of the insulating rod in the closed state in the vacuum switching device for each opening and closing operation detected by the first position detector and the stroke value of the insulating rod in the closed state of the vacuum switching device obtained in advance are the above The life of the vacuum valve is determined by calculating the amount of wear of the contact point of the vacuum valve based on the magnitude of the stroke value as a result of comparison by the comparison device and comparison by the comparison device. Abnormality monitoring method.
  18. 　請求項１５に記載の真空開閉装置の異常監視方法であって、
    　前記真空バルブの可動側の前記レバー接続金具と前記絶縁フレーム又は前記筺体フレームの間に第２の位置検出器を設け、前記第２の位置検出器にて前記レバー接続金具のストローク特性を検出し、連続的に検出した前記レバー接続金具のストローク特性と、予め取得した前記レバー接続金具の正常なストローク特性とを前記比較装置で比較し、前記比較装置で比較したストローク値の大小により異常の有無を判定することを特徴とする真空開閉装置の異常監視方法。     16. The method for monitoring abnormality of a vacuum switchgear according to claim 15, wherein
    A second position detector is provided between the lever fitting on the movable side of the vacuum valve and the insulating frame or the casing frame, and the stroke characteristic of the lever fitting is detected by the second position detector. The comparison device compares the stroke characteristics of the lever connection fitting detected continuously with the normal stroke characteristics of the lever connection fitting acquired in advance, and the presence or absence of abnormality due to the magnitude of the stroke value compared by the comparison device A method of monitoring abnormality of a vacuum switching device, characterized in that:
  19. 　請求項１８に記載の真空開閉装置の異常監視方法であって、
    　前記第１の位置検出器で検出した前記絶縁ロッドのストローク値と、前記第２の位置検出器で検出した前記レバー接続金具のストローク値との差分値を、予め取得した正常な差分値と前記比較装置で比較することで、前記真空バルブの接点の接触荷重を把握することを特徴とする真空開閉装置の異常監視方法。     The method for monitoring abnormality of a vacuum switching device according to claim 18, wherein
    The difference value between the stroke value of the insulating rod detected by the first position detector and the stroke value of the lever connection fitting detected by the second position detector is a previously obtained normal difference value and the difference value A method of monitoring abnormality of a vacuum switchgear, wherein the contact load of the contact point of the vacuum valve is grasped by comparing with a comparison device.
  20. 　請求項１８に記載の真空開閉装置の異常監視方法であって、
    　前記操作機構部の前記駆動ロッドと前記操作器ケースの間に第３の位置検出器を設け、前記第３の位置検出器にて前記操作機構部の前記駆動ロッドのストローク特性を検出し、連続的に検出した前記駆動ロッドのストローク特性と、予め取得した正常な前記駆動ロッドのストローク特性とを比較装置で比較して異常の有無を判定することを特徴とする真空開閉装置の異常監視方法。     The method for monitoring abnormality of a vacuum switching device according to claim 18, wherein
    A third position detector is provided between the drive rod of the operation mechanism and the actuator case, and the stroke characteristic of the drive rod of the operation mechanism is detected by the third position detector, and continuous operation is performed. A method of monitoring abnormality of a vacuum switching device, comprising comparing a stroke characteristic of the drive rod detected in a step with a stroke characteristic of a normal drive rod acquired in advance by a comparison device to determine the presence or absence of an abnormality.
  21. 　請求項２０に記載の真空開閉装置の異常監視方法であって、
    　前記第１の位置検出器、前記第２の位置検出器及び前記第３の位置検出器で、前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性を検出し、連続的に検出した前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性と、予め取得した正常な前記絶縁ロッド、前記レバー接続金具及び前記駆動ロッドのそれぞれのストローク特性とを前記比較装置で比較して異常箇所を特定することを特徴とする真空開閉装置の異常監視方法。     21. The method for monitoring abnormality of a vacuum switching device according to claim 20, wherein
    The stroke characteristics of the insulating rod, the lever fitting and the drive rod are detected and detected continuously by the first position detector, the second position detector, and the third position detector. The comparison device compares the stroke characteristics of each of the insulating rod, the lever fitting, and the drive rod with the stroke characteristics of the insulating rod, the lever fitting, and the drive rod obtained in advance, respectively. A method of monitoring an abnormality of a vacuum switching device, characterized in that an abnormal portion is identified.
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