JP2007236014A - Confirmation method of attachment/removal of otsu-type earth for working, and its earth tag for confirmation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To exactly manage the attachment/removal of an Otsu-type earth in a site apparatus without remodeling the site apparatus by managing the Otsu-type earth by using number tags. <P>SOLUTION: The Otsu-type earth comprises: the Otsu-type earth number tag 4 to be hung to the site apparatus 3 together with an Otsu-type earth hook of the Otsu-type earth 2 for working, having the same number as that for the Otsu-type earth 2; and the Otsu-type earth number tag 5 to be hung to an internal wire connection indication plate 1 so as to confirm a corresponding earth attachment apparatus, having the same number as that for the Otsu-type earth number tag 4, and is smaller than the Otsu-type earth number tag 4 in size. The Otsu-type earth 2 is managed by the number, thus confirming the attachment/removal of the Otsu-type earth 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a work ground for work to be attached to field equipment during power outage work at a power generation substation, etc., and in particular, a work ground ground removal confirmation method capable of confirming the attachment / detachment of the work ground and It relates to the confirmation ground tag.

  During power outage work at power stations and substations, work grounds are attached to field equipment. As an attachment / detachment management method for checking whether or not the second earth was removed after the work was completed after attaching the second earth to the field equipment, the equipment operation procedure was described with the equipment name and numbers such as alphanumeric characters. There is a method of checking and managing using an “operation form” and a work confirmation form.

As described above, various techniques have been proposed for easily confirming work grounding in response to a power failure operation at a power generation substation or the like. For example, as disclosed in Japanese Patent Application Laid-Open No. 11-353882 “Grounding Confirmation Device” of Patent Document 1, an output shaft is inverted by a predetermined angle by driving an electric motor, and is provided in a disconnector that performs an on / off operation. A grounding confirmation device for confirming grounding, comprising: a stopper fixed to the output shaft; and a grounding ground conductor disposed in the vicinity of the output shaft, wherein the grounding ground is the working ground. A grounding confirmation device has been proposed in which when the grounding metal is attached to the conductor, the stopper abuts against the grounding metal to prevent the output shaft from being reversed.
JP-A-11-353882

Similarly, as disclosed in Japanese Patent Application Laid-Open No. Hei 5 (Patent Document 2), an output shaft that is rotated by driving a cylinder, and is pivoted by the rotation of the output shaft connected to the output shaft. Provided in a disconnector having a swing member and an operation connecting portion operatively connected to the swing member, and performing an on / off operation via the operation connecting portion by swinging of the swing member. A grounding confirmation device for confirming work grounding, comprising: a stopper fixed to the operation connecting part; and a grounding ground conductor disposed in the vicinity of the operation connecting part. A grounding confirmation device has been proposed in which when the grounding metal is attached to the grounding ground conductor, the stopper abuts against the grounding metal to prevent the output shaft from rotating.
JP 2000-340073 A

  However, in the above-mentioned operation slips and work confirmation slips, the names and numbers of on-site equipment are often similar, and their arrangement is complicated, and the power outage range cannot be accurately recognized in the power station substation, so it is necessary to remove it. It was difficult to distinguish between a certain earth and an earth that does not need to be removed. Therefore, there has been a problem that such an electric accident due to forgetting to remove the earth or an unsafe state due to accidental removal. In addition, there is a problem that it is easy to lead to an electric shock accident by induction.

  The “grounding confirmation device” of Patent Document 1 and the “grounding confirmation device” of Patent Document 2 both provide grounding securely to prevent electric shock due to erroneous operation of the device, and respond to electrical accidents caused by forgetting to remove. could not.

The present invention has been developed to solve such problems. In other words, the object of the present invention is to check whether the ground for work is installed or removed by managing the ground for the ground equipment without modifying the field equipment by managing the ground with the number tag. It is an object of the present invention to provide a method and a confirmation ground tag.

According to the confirmation method of the present invention, at the time of a power failure operation at a power substation, the work earth (2) is attached to the field equipment (3), the earth (2) is managed by a number, A method for confirming whether or not the earth (2) is attached / detached, and a method for confirming whether the earth (2) is attached or removed, wherein the second earth (2) and the second earth number having the same number as the second earth number tag (4) having the same number. Using the bill (5), the field equipment (3) is hooked with the earth ground hook of the earth ground (2) and the earth ground number tag (4) of the corresponding number. The earth number tag (5) having the same number as the earth number tag (4) is hung on the corresponding place of the ground mounting device on the in-house connection display board (1) of the substation or the like, and the field device (3) After the operation is completed, the detachment from the in-house connection display board (1) By checking the number tag (5) with the second earth number tag (4) attached to the field equipment (3) by visual inspection, it is possible to manage forgetting to remove the second earth (2) due to misidentification of workers. A method for confirming whether or not the work ground is removed is provided.

  As the in-house connection display board (1), it is preferable to use a display board in which the connection state of the entire field device (3) is represented by a symbol.

  According to the confirmation ground tag of the present invention, at the time of a power failure operation at a power substation or the like, the work ground (2) is attached to the field device (3), and the ground (2) is managed by a number. A grounding tag for confirming whether or not the earth ground (2) is attached / detached, and a ground tag for confirming whether the earth / earth ground (2) is attached or not. On the ground number plate (4) with the same number as the ground (2), provided with the stopper (6), and the in-house connection display board (1), the corresponding grounding equipment can be confirmed. And a second earth number tag (5) having the same number as that of the second earth number tag (4) and having a size smaller than the second earth number tag (4). A ground tag for confirming the removal of the working ground is provided.

It is preferable that the second earth number tag (5) is detachably attached to a part of the second earth number tag (4) by magnet attraction.
It is preferable that the second earth number tag (5) is detachably attached to the step portion (9) formed on the second earth number tag (4) by magnet attraction.
It is preferable that a transparent case (11) is provided on a part of the second earth number tag (4), and the second earth number tag (5) is detachably attached in the transparent case (11).
It is preferable that a transparent case (11) is provided on a part of the second earth number tag (4), and the second earth number tag (5) is detachably attached to the transparent case (11) by magnet suction.
A plurality of pins (12) having a unique arrangement for each device are provided on a part of the second earth number tag (4), and the second earth number number is matched with the plurality of pins (12). It is preferable to arrange a plurality of insertion holes (13) in the bill (5).
It is preferable that the second earth number tag (5) is detachably attached to the second earth number tag (4) by magnet attraction.

  In the confirmation method of the above configuration, the field equipment (3) is not modified, the earth number number tag (4) having the same number as the work earth (2), and the earth number number tag (5) having the same number as this. ) With a set, the second ground (2) attached to the field equipment (3) is managed by the second ground number tag (4) and the second ground number joint ticket (5) with the same number, It is possible to prevent unintentional removal or forgetting to remove, and to prevent operator mistakes.

  In the confirmation ground tag with the above configuration, the second ground number tag (5) having the same number as the second ground number tag (4) is not separated from the second ground number tag (4). When it is hung on the site equipment (3) and the in-house connection display board (1), the worker can easily perform the confirmation work. In addition, the magnet attraction can easily attract the second earth number tag (5) to the second earth number tag (4) and easily remove it from the second earth number tag (4). Will not be a burden.

  Furthermore, even if the earth number number tag (5) is detachably attached to the step portion (9) formed in a part of the earth number tag (4) by magnet attraction, Since it is not separated from the second earth number tag (5), the worker can easily carry it.

  According to the method for confirming whether or not the work B ground is attached to the power source according to the present invention, the work B earth is attached to the field equipment at the time of a power outage operation at a power substation, etc. It is a method to confirm.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram for explaining a procedure “state before attaching a second ground” of the method for confirming removal of the second working ground according to the first embodiment of the present invention. FIGS. 1 to 4 show the in-house connection display board 1 of the switchboard room on the left side of the drawing, and schematically show the state of the field device 2 at a position away from the switchboard room on the right side.
`` State before attaching B ground ''
First, as shown in FIG. 1, the position where the second earth 2 is attached on the in-house connection display board 1 is confirmed. This in-house connection display board 1 is a display board that expresses the connection state of the entire field device 3 with abbreviated symbols. For example, the number of the earth 2 attached between “101” and “101B” in the in-house connection display board 1 is “1”. Similarly, the number of the earth 2 attached between “101L” and “101” is “2”.

  The worker prepares a ground tag set for confirmation. This confirmation ground tag set includes a second ground number tag 4 having the same number as the second ground 2 and a second ground number tag 5 having the same number and a smaller size than the second ground number tag 4. It has become. Next, the user moves to the field equipment 3 with two sets of the second earth hooks of the second earth 2 and the “checking ground tag set” of the corresponding number. The second earth number tag 4 is provided with a hook 6 such as a ring-shaped string so as to be hooked together with the second earth hook of the second earth 2 described above.

FIG. 2 is an explanatory diagram for explaining the procedure “during the operation of attaching the earth” of the method for confirming the removal of the earth for working according to the first embodiment of the present invention.
"At the time of operation to attach the earth"
The worker holding the confirmation ground tag set attaches the second ground hook of the second ground 2 between “101” and “101B” of the field equipment 3. At the same time, the earth number tag 4 of the corresponding number (here, “1”) is attached to the earth side terminal of the earth hook. Similarly, the second earth hook of the second earth 2 is attached between “101L” and “101” of the field device 3. At the same time, the earth number tag 4 of the corresponding number (here, “2”) is attached to the earth side terminal of the earth hook.
The worker who attached the second earth 2 to the field device 3 returns to the switchboard room with the second earth number tag 5.

FIG. 3 is an explanatory diagram for explaining a procedure “when attaching a ground number joint tag after attaching a second ground” of the method for confirming whether or not the second working ground is attached according to the first embodiment of the present invention.
"When installing the ground number ticket after attaching the ground"
The worker who returned to the switchboard room with the second earth number tag 5 hooks the second earth number tag 5 at the same position as the field device 3 on the in-house connection display board 1. Thereby, it can be confirmed in the switchboard room as to which field device 3 is currently attached with the earth B 2. In other words, since the second earth number tag 5 has the same number as the second earth number tag 4, the applicable earth mounting device can be confirmed by hooking the second earth number tag 5 on the in-house connection display board 1. be able to.

FIG. 4 is an explanatory diagram for explaining a procedure “when confirming removal / removal of earth ground” of the work earth / ground removal confirmation method according to the first embodiment of the present invention.
"When confirming removal of B ground"
When removing the earth, work in the reverse order of the above procedure. Bring the corresponding earth number number tag 5 that is hooked to the in-house connection display board 1 of the switchboard room to the site, and visually verify the number with the earth number tag 4 that is hooked to the field equipment 3 Only the second earth 2 with the same number is removed from the field device 3. In this case, since the number of the second earth 2 that is always attached is not the same as the number of the second earth 2 that is removed, a collation operation is required. Thus, after the operation of the on-site equipment 3 is completed, the second earth number tag 5 removed from the in-house connection display board 1 is visually checked against the second earth number tag 4 attached to the on-site equipment 3. It is possible to manage forgetting to remove due to misidentification of employees.

FIG. 5 shows a second earth number tag and a second earth number tag of the second embodiment. FIG. 5A is a front view showing a state in which the second earth number tag and the second earth number ticket are integrated. ) Is a front view of the second earth number tag separated from the second earth number tag, and (c) is a rear view of the second earth number ticket.
The second earth number tag 5 is separated from the second earth number tag 4. Workers will carry them separately and store them separately. The second earth number tag 5 is small and not integrated with the second earth number tag 4, so it may be lost and difficult to transport and store.
Therefore, in the second embodiment, the second earth number tag 5 is detachably attached to a part of the second earth number tag 4 by magnet attraction so that the second earth number tag 5 is not separated from the second earth number tag 4. did. That is, a sheet-like magnet 7 having magnetism is attached to the back surface of the earth number tag 5. On the other hand, a magnet suction plate 8 made of iron or nickel is affixed to a part of the second earth number tag 4. The magnet suction plate 8 is preferably a thin film for the purpose of reducing the weight of the earth number plate 4. In order to affix the magnet attraction plate 8, a step portion 9 was formed on the second earth number tag 4.
On the contrary, it is also possible to attach the magnet 7 to the second earth number tag 4 and the magnet suction plate 8 to the second earth number bill 5. Further, the magnet 7 is not limited to a sheet-like one, and a point-like one can be attached.

FIG. 6 shows another embodiment of the second earth number tag and the second earth number joint ticket of the second embodiment, and FIG. 6A is a front view showing a state in which the second earth number tag and the second earth number joint ticket are integrated. (B) is a front view of the state in which the second earth number tag is separated from the second earth number tag, and (c) is a longitudinal sectional view of the second earth number tag.
In the illustrated example of FIG. 5 described above, the stepped portion 9 formed on the right corner of the surface of the second earth number tag 4 is displayed. The position where the stepped portion 9 or the magnet suction plate 8 is attached is not limited to this corner portion, and the stepped portion 9 can be formed in the middle of the periphery of the second earth number tag 4 as shown in FIG. is there.

FIG. 7 shows a second earth number tag and a second earth number tag of the third embodiment, (a) is a front view of the state where the second earth number tag and the second earth number ticket are integrated, and (b). Is a front view of the state in which the second earth number tag is separated from the second earth number tag, and (c) is a longitudinal sectional view of the second earth number tag.
The second earth number tag 4 of the third embodiment is a modification of the second embodiment. When the place where the second earth number tag 5 is integrated is the corner or the periphery of the second earth number tag 4, it can be easily separated from the second earth number tag 4 with a simple impact. Therefore, a recess 10 was formed so that the second earth number tag 5 could be affixed to the inside of the second earth number tag 4 surface (a place other than the periphery). A magnet attraction plate 8 is affixed in the recess 10. Thereby, since it is strong against an impact from the side and does not skid sideways, the drop prevention effect is higher than that of the second earth number tag 4 of the second embodiment.

FIG. 8 shows a second earth number tag and a second earth number ticket of Example 4, (a) is a front view of the state in which the second earth number tag and the second earth number ticket are integrated, and (b). Is a front view of the state in which the second earth number tag is separated from the second earth number tag, and (c) is a longitudinal sectional view of the second earth number tag.
The second earth number tag 4 of the fourth embodiment is formed by forming a transparent case 11 in order to accommodate the second earth number tag 5. The transparent case 11 has an internal dimension that is substantially the same as the outer diameter dimension of the earth number tag 5. Even in such a transparent case 11, it is possible to prevent the O-earth number tag 5 from falling off.

FIG. 9 shows a second earth number tag and a second earth number ticket of Example 5, (a) is a front view of a state in which the second earth number tag and the second earth number ticket are integrated, and (b). Is a front view of the state in which the second earth number tag is separated from the second earth number tag, and (c) is a longitudinal sectional view of the second earth number tag.
The second earth number tag 4 of the fifth embodiment is a modification of the fourth embodiment. If the place of the transparent case 11 for storing the second earth number tag 5 is the corner of the second earth number tag 4, the transparent case 11 may be damaged by a simple impact. Therefore, a transparent case 11 was formed at a place other than the corner of the B earth number tag 4. If the transparent case 11 is formed in this place, the transparent case 11 is not easily damaged even if the earth number tag 4 falls.

FIG. 10 shows a second earth number tag and a second earth number ticket of Example 6, (a) is a front view of a state in which the second earth number tag and the second earth number ticket are integrated, (b). Is a front view of the second earth number tag separated from the second earth number tag, and (c) is a rear view of the second earth number tag.
In the sixth embodiment, a plurality of pins 12 having a unique arrangement for each device are provided in a part of the second earth number tag 4, and the second earth number tag 5 is fitted to the plural pins 12. A plurality of insertion holes 13 are arranged. In this way, by configuring the second earth number bill 5 as a tablet, it is possible to reliably prevent the second earth number bill 5 from falling. The number of insertion holes 13 is not limited to three. Similarly, the number of pins 12 is not limited to three.

  Further, a dot-like magnet 14 for a bill is provided on the second earth number tag 5, and a dot-shaped magnet suction plate 15 is provided on the second earth number tag 4. Alternatively, a magnetic sheet-like magnet can be attached to the back surface of the second earth number tag 5, while a magnet suction plate can be attached to the entire stepped portion of the second earth number tag 4.

  Note that the present invention can be applied to the above-described embodiment of the present invention as long as it is possible to reliably manage the attachment / detachment of the earth in the field equipment without modifying the field equipment by managing the earth with a number tag. Of course, the present invention is not limited, and various changes can be made without departing from the scope of the present invention.

  The working earth ground attachment / detachment confirmation method and the confirmation grounding tag according to the present invention can be used when operating on-site equipment at a power substation, and are operated by associating on-site connection display boards with on-site equipment. If it is a work, it can be used as a confirmation and management work method other than confirmation of attachment / detachment of the earth.

It is explanatory drawing explaining the procedure "state before attaching the earth ground" of the working earth ground attachment removal confirmation method of Example 1 of this invention. It is explanatory drawing explaining the procedure "at the time of the earthing | grounding operation" of the working earth grounding removal confirmation method of Example 1 of this invention. It is explanatory drawing explaining the procedure "at the time of attachment of the earth number tag after attaching earth ground" of the working earth earth attaching / detaching confirmation method of Example 1 of this invention. It is explanatory drawing explaining the procedure "at the time of confirmation of the removal of the earth ground" of the working earth ground removal confirmation method of Example 1 of this invention. FIG. 2 shows a second earth number tag and a second earth number ticket of Example 2, (a) is a front view of the second earth number tag and the second earth number ticket, and (b) is a second figure. FIG. 4C is a front view showing a state in which the second earth number tag is separated from the earth number tag, and FIG. The other example of the second earth number tag of the second embodiment and the second earth number tag is shown, (a) is a front view of the state where the second earth number tag and the second earth number ticket are integrated, (b) ) Is a front view of the second earth number tag separated from the second earth number tag, and (c) is a longitudinal sectional view of the second earth number tag. FIG. 7 shows a second earth number tag and a second earth number ticket of Example 3, (a) is a front view of the state where the second earth number tag and the second earth number ticket are integrated, and (b) is a second earth. The front view of the state which isolate | separated the 2nd earth number tag from the number tag, (c) is a longitudinal cross-sectional view of the 2nd earth number tag. FIG. 7 shows a second earth number tag and a second earth number ticket of Example 4, (a) is a front view of the state where the second earth number tag and the second earth number ticket are integrated, and (b) is a second earth. The front view of the state which isolate | separated the 2nd earth number tag from the number tag, (c) is a longitudinal cross-sectional view of the 2nd earth number tag. FIG. 5 shows a second earth number tag and a second earth number joint ticket of Example 5, (a) is a front view of the state where the second earth number tag and the second earth number joint ticket are integrated, and (b) is second earth. The front view of the state which isolate | separated the 2nd earth number tag from the number tag, (c) is a longitudinal cross-sectional view of the 2nd earth number tag. FIG. 7 shows a second earth number tag and a second earth number ticket of Example 6, (a) is a front view of the state where the second earth number tag and the second earth number ticket are integrated, and (b) is a second earth. The front view of the state which isolate | separated the 2nd earth number joint ticket from the number tag, (c) is a rear view of the 2nd earth number joint ticket.

Explanation of symbols

1 In-house connection display board 2 B earth 3 Field equipment 4 B earth number tag 5 B earth number tag 7 Magnet 8 Magnet suction plate 9 Step part 10 Recess 11 Transparent case 12 Pin 13 Insertion hole

Claims (9)

At the time of power outage work at the power station and substation, attach the working earth (2) to the field equipment (3), manage the earth (2) by number, and confirm the removal of the earth (2) It is a confirmation method for attaching / detaching the working earth to the work,
Using the second earth (2) and the second earth number tag (4) having the same number as the second earth number tag (5),
Along with the second earth hook of the second earth (2), the second earth number tag (4) of the corresponding number is hooked on the field equipment (3),
Next, the second ground number tag (5) having the same number as the second ground number tag (4) is hung on the corresponding place of the ground mounting device on the in-house connection display board (1) such as a substation,
After the operation of the field device (3), the earth number number tag (4) attached to the field device (3) is connected to the earth number tag (5) removed from the in-house connection display board (1). A method for confirming whether or not to remove the ground for work, characterized by managing forgetting to remove the ground (2) due to a worker's misidentification by visually verifying the number. The method for confirming attachment / detachment of the work B earth according to claim 1, wherein the in-house connection display board (1) uses a display board that expresses the connection state of the entire field device (3) with a symbol. At the time of power outage work at the power substation, etc., the work ground (2) is attached to the field equipment (3), the ground (2) is managed by number, and the removal of the ground (2) is confirmed. It is a ground tag for confirming the removal and removal of the work B ground,
The field equipment (3) is provided with a latch (6) so as to be latched together with the earth ground hook of the earth (2), and the earth number tag with the same number as the earth (2) ( 4) and
The in-house connection display board (1) is hooked so that the corresponding ground mounting device can be confirmed, and has the same number as the second earth number tag (4), and its dimensions are from the second earth number tag (4). A small second earth number tag (5),
A ground tag for confirming whether or not the work ground is removed. 4. The work earth ground attachment / detachment confirmation ground tag according to claim 3, wherein the earth earth number joint tag (5) is detachably attached to a part of the earth ground number tag (4) by magnet attraction. . The work earth ground attachment according to claim 4, wherein said earth number number tag (5) is detachably attached to a step portion (9) formed on said earth number tag (4) by magnet attraction. Earth tag for confirmation of removal. A transparent case (11) is provided in a part of the second earth number tag (4), and the second earth number tag (5) is removably attached to the transparent case (11). 3 Ground card for confirmation of removal / removal of work B ground. A transparent case (11) is provided in a part of the second earth number tag (4), and the second earth number tag (5) is detachably attached to the transparent case (11) by magnet suction. The ground tag for confirming removal of the working ground of claim 6. A plurality of pins (12) having a unique arrangement for each device are provided in a part of the second earth number tag (4), and the second earth number number is matched with the plurality of pins (12). The grounding card for confirming the removal of the working ground according to claim 3, wherein a plurality of insertion holes (13) are arranged in the bill (5). 9. The working earth ground attachment / detachment confirmation ground tag according to claim 8, wherein the earth ground number tag (5) is detachably attached to the earth ground number tag (4) by magnet attraction.

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