Distribution network line fault recording device and fault recording method thereof

Abstract

The invention relates to the technical field of distribution network line fault recording devices, in particular to a distribution network line fault recording device and a fault recording method thereof.The distribution network line fault recording device comprises a power distribution cabinet, a connecting frame, a fault recording device, a placement seat and a plurality of adjusting units, the connecting frame is installed in the power distribution cabinet, and the fault recording device is arranged on the placement seat; the placing seat is slidably connected to the inner wall of the power distribution cabinet, the adjusting units are arranged on the two sides of the fault recording device, the outer wall of the placing seat is fixedly connected with a sliding rod, and the sliding rod is slidably connected to the interior of the connecting frame. According to the device, by rotating the adjusting lead screws, the transmission wheels rotate, the multiple adjusting lead screws are driven to rotate, at the moment, the adjusting lead screws drive the adjusting bases to move, under the movement of the adjusting bases, the adjusting bases drive the limiting springs and the sliding blocks to move, and under the movement of the sliding blocks, the sliding blocks drive the rotating rods to rotate; and under the rotation of the rotating rod, the fault recording device is pushed to rotate at a proper use angle.

Description

Technical Field

[0001] The invention relates to the technical field of distribution network line fault recording devices, and in particular to a distribution network line fault recording device and a fault recording method thereof. Background Art

[0002] The distribution network line fault recording device is a device that can automatically record and analyze the changes in electrical quantities before and after a distribution network line fault.

[0003] The distribution network line fault recording device monitors the operating status of the power system in real time. Once a fault signal is detected, it will immediately start and record the electrical quantity waveform data before and after the fault.

[0004] Fault recording devices are usually installed in locations that are convenient for monitoring and recording fault information. Real-time monitoring of the entire distribution network and fault warnings are used to improve the safety and reliability of the power grid. In order to protect the fault recording device, it is usually installed in a distribution cabinet, and it is usually fixed, so that its angle cannot be adjusted, which makes it cumbersome to operate and repair it. At the same time, since it is fixed in the distribution cabinet, when the distribution cabinet collides and causes shaking or deformation, it will directly damage the fault recording device, resulting in its inability to be used normally. Therefore, we propose a distribution network line fault recording device and a fault recording method thereof. Summary of the invention

[0005] In view of the above shortcomings, the present invention provides a distribution network line fault recording device and a fault recording method thereof, which solves the problem that the distribution network line fault recording device is usually fixedly installed in the distribution cabinet, resulting in that its angle cannot be adjusted, and it is cumbersome to operate and repair. When the distribution cabinet collides and causes shaking or deformation, it will directly damage the fault recording device, resulting in that it cannot be used normally. The specific technical solution is as follows:

[0006] A distribution network line fault recording device, comprising a distribution cabinet, a connecting frame, a fault recording device, a placement seat and a plurality of adjustment units, wherein the connecting frame is installed in the distribution cabinet, the fault recording device is arranged on the placement seat, the placement seat is slidably connected to the inner wall of the distribution cabinet, the adjustment units are arranged on both sides of the fault recording device, a sliding rod is fixedly connected to the outer wall of the placement seat, and the sliding rod is slidably connected to the inside of the connecting frame;

[0007] A plurality of limiting units are arranged on the outer wall of the connecting frame, and the limiting units include a fixing seat fixedly connected to the connecting frame, and a limiting block is slidably connected to the inner wall of the fixing seat;

[0008] The adjustment unit includes a connecting seat fixedly connected to the outer wall of the fault recording device, a sliding block is slidably connected to the inner wall of the connecting seat, a rotating rod is rotatably connected to the outer wall of the sliding block, and the other end of the rotating rod is rotatably connected to the placement seat.

[0009] Preferably, a sealing door is rotatably connected to the outer wall of the power distribution cabinet, and a protective plate is fixedly connected to the top end surface of the power distribution cabinet.

[0010] Preferably, a fitting seat is slidably connected to the inner wall of the connecting frame, the fitting seat is fixedly connected to the placement seat and a plurality of sliding rods, and the fitting seat is located inside the connecting frame.

[0011] Preferably, the sliding rod is fitted with the limiting block, the top end surface of the limiting block is fixedly connected with a compression spring, and one end of the compression spring away from the limiting block is fixedly connected with an adjusting block.

[0012] Preferably, the outer peripheral wall of the adjusting block is bolted to a limiting screw rod, and the limiting screw rod is rotatably connected to the inner wall of the fixing seat.

[0013] Preferably, a rotating seat is slidably connected to the placement seat, and the rotating seat is rotatably connected to the fault recording device.

[0014] Preferably, an adjusting screw is rotatably connected to the inner wall of the connecting seat, and an adjusting seat is threadedly connected to the outer peripheral wall of the adjusting screw.

[0015] Preferably, one end of the adjustment seat is fixedly connected to a limit spring, the other end of the limit spring is fixedly connected to a sliding block, and the sliding block is slidably connected to the outer peripheral wall of the adjustment screw rod.

[0016] Preferably, a transmission wheel is sleeved on the outer peripheral wall of the adjusting screw rod, and a transmission belt is interference-fitted on the outer peripheral walls of the two transmission wheels.

[0017] The present invention also provides a fault recording method of a distribution network line fault recording device based on the above device, which triggers recording when it is detected that the current or voltage on the line exceeds a preset threshold value, and triggers recording when the system frequency deviates from the normal range. The recording is triggered by an external signal:

[0018] The fault recording device collects electrical quantity data on the distribution network line in real time to ensure that fault information can be captured in time when a fault occurs. The fault recording device improves the comprehensiveness and accuracy of fault analysis by collecting data from multiple lines or different electrical quantities at the same time.

[0019] The collected data is then filtered through a fault recording device, and parameters that can reflect the fault characteristics are extracted from the filtered data. Based on the extracted characteristic parameters, the waveform diagrams before and after the fault are reconstructed to facilitate intuitive observation and analysis of the fault process.

[0020] The waveform data and related information are stored and recorded through the internal memory of the fault recording device.

[0021] The fault recording device is equipped with a standard communication interface to exchange data and communicate with external equipment such as the monitoring system and the dispatching center.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The distribution network line fault recording device and fault recording method described in the present invention rotate the adjusting screw to rotate the transmission wheel, thereby driving multiple adjusting screws to rotate. At this time, the adjusting screw drives the adjusting seat to move. The movement of the adjusting seat drives the limit spring and the sliding block to move. The movement of the sliding block drives the rotating rod to rotate. The rotation of the rotating rod drives the fault recording device to rotate to a suitable use angle.

[0024] 2. The distribution network line fault recording device and fault recording method described in the present invention, when the fault recording device is fitted with the placement seat, the connecting seat and the fault recording device are pushed to be moved and plugged into the connecting frame under the rebound of the limit spring, and the stability of the fault recording device in the connecting frame and the placement seat is ensured under the rebound of the limit spring, so as to avoid the fault recording device from shaking and being damaged when the distribution cabinet is hit. When deformation occurs, the impact on the placement seat causes the rotating rod to drive the sliding block to slide, which effectively avoids direct impact on the fault recording device and effectively protects the fault recording device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the power distribution cabinet of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the distribution network line fault recording device of the present invention;

[0029] Figure 4It is a schematic diagram of the structure of the limiting unit of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection of the placement seat of the present invention;

[0031] Figure 6 This is a schematic diagram of the connection of the regulating unit of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the regulating unit of the present invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged view of the middle part of the structure.

[0034] 1. Power distribution cabinet; 101. Sealed door; 2. Protective plate; 3. Connecting frame; 4. Fault recording device; 401. Rotating seat; 5. Placement seat; 501. Fitting seat; 502. Sliding rod; 6. Limiting unit; 601. Fixed seat; 602. Limiting block; 603. Extrusion spring; 604. Adjusting block; 605. Limiting screw rod; 7. Adjusting unit; 701. Connecting seat; 702. Adjusting screw rod; 703. Sliding block; 704. Transmission wheel; 705. Transmission belt; 706. Rotating rod; 707. Limiting spring; 708. Adjusting seat. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] According to the attached Figure 1-8 As shown, it includes a distribution cabinet 1, a connecting frame 3, a fault recording device 4, a placement seat 5 and a plurality of adjustment units 7. The connecting frame 3 is installed in the distribution cabinet 1, the fault recording device 4 is arranged on the placement seat 5, the placement seat 5 is slidably connected to the inner wall of the distribution cabinet 1, the adjustment units 7 are arranged on both sides of the fault recording device 4, and a sliding rod 502 is fixedly connected to the outer wall of the placement seat 5, and the sliding rod 502 is slidably connected to the inside of the connecting frame 3. By pulling the placement seat 5, the sliding rod 502 slides along the inner wall of the connecting frame 3, and the fault recording device 4 is pulled out of the connecting frame 3.

[0040] A plurality of limiting units 6 are arranged on the outer wall of the connecting frame 3, and the limiting units 6 include a fixed seat 601 fixedly connected to the connecting frame 3, and a limiting block 602 is slidably connected to the inner wall of the fixed seat 601. When the placement seat 5 is pulled to the outside, in order to ensure the stability of the fault recording device 4 on the placement seat 5, the limiting screw rod 605 is rotated to make the limiting screw rod 605 drive the adjusting block 604 to rotate, so that the adjusting block 604 slides along the inner wall of the fixed seat 601. At this time, the adjusting block 604 moves to squeeze the squeezing spring 603. At this time, under the rebound of the squeezing spring 603, the limiting block 602 is pushed to contact and squeeze the sliding rod 502, thereby ensuring the stability of the sliding rod 502, thereby making the fault recording device 4 and the placement seat 5 more stable;

[0041] The adjusting unit 7 includes a connecting seat 701 fixedly connected to the outer wall of the fault recording device 4, a sliding block 703 is slidably connected to the inner wall of the connecting seat 701, and a rotating rod 706 is rotatably connected to the outer wall of the sliding block 703, and the other end of the rotating rod 706 is rotatably connected to the placement seat 5. By rotating the adjusting screw rod 702, the transmission wheel 704 is rotated under the rotation of the adjusting screw rod 702, and the action of the transmission belt 705 is cooperated, so that multiple transmission wheels 704 are rotated at the same time, driving multiple adjusting screw rods 702 to rotate. At this time, the adjusting screw rod 702 drives the adjusting seat 708 to move, and the movement of the adjusting seat 708 drives the limiting spring 707 and the sliding block 703 to move. Under the movement of the sliding block 703, the sliding block 703 drives the rotating rod 706 to rotate. Under the rotation of the rotating rod 706, the fault recording device 4 is pushed to rotate and is at a suitable use angle.

[0042] A sealing door 101 is rotatably connected to the outer wall of the distribution cabinet 1, and a protective plate 2 is fixedly connected to the top end face of the distribution cabinet 1. The distribution cabinet 1 is closed by the sealing door 101 to protect the distribution cabinet 1, and the protective plate 2 on the distribution cabinet 1 is used to protect the top of the distribution cabinet 1.

[0043] A fitting seat 501 is slidably connected to the inner wall of the connecting frame 3, and the fitting seat 501 is fixedly connected to the placement seat 5 and multiple sliding rods 502. The fitting seat 501 is inside the connecting frame 3. When the sealing door 101 is opened and rotated, the distribution cabinet 1 is opened. At this time, the fitting seat 501 is moved by pulling the placement seat 5. At this time, the sliding rod 502 fixedly connected between the fitting seat 501 and the placement seat 5 slides, so that the placement seat 5 moves to a suitable position, driving the fault recording device 4 to be outside the connecting frame 3.

[0044] The sliding rod 502 fits with the limiting block 602 , and a pressing spring 603 is fixedly connected to the top end surface of the limiting block 602 . An adjusting block 604 is fixedly connected to one end of the pressing spring 603 away from the limiting block 602 .

[0045] The outer wall of the adjusting block 604 is bolted to a limiting screw 605, and the limiting screw 605 is rotatably connected to the inner wall of the fixing seat 601. At this time, by rotating the limiting screw 605, the adjusting block 604 is driven to slide along the inner wall of the fixing seat 601 under the rotation of the limiting screw 605. Under the movement of the adjusting block 604, the extrusion spring 603 is compressed. Under the rebound of the extrusion spring 603, the extrusion spring 603 generates a thrust on the limiting block 602, so that the limiting block 602 contacts and squeezes the sliding rod 502, thereby ensuring the stability of the sliding rod 502 and the placement seat 5.

[0046] The placement seat 5 is slidably connected with a rotating seat 401, and the rotating seat 401 is rotatably connected to the fault recording device 4. At this time, the part passing through the fault recording device 4 is in the connecting frame 3. At this time, the fault recording device 4 is pulled to move, driving the rotating seat 401 to slide along the placement seat 5.

[0047] An adjusting screw rod 702 is rotatably connected to the inner wall of the connecting seat 701, and an adjusting seat 708 is threadedly connected to the outer wall of the adjusting screw rod 702. Since part of the fault recording device 4 is in the connecting frame 3, the fault recording device 4 cannot rotate in the connecting frame 3 at this time. When the fault recording device 4 moves (the fault recording device 4 is slid on the placement seat 5, so that the fault recording device 4 moves on the placement seat 5, and at the same time moves relative to the connecting frame 3, so that the fault recording device 4 is removed from the connecting frame 3), the connecting seats 701 fixedly connected on both sides of the fault recording device 4 move. 1, the adjusting seat 708 is driven to move. When the connecting seat 701 and the adjusting seat 708 move, because under the premise that "the part passing through the fault recording device 4 is in the connecting frame 3 at this time", when the fault recording device 4 slides relative to the placing seat 5, the rotating rod 706 on the placing seat 5 does not move or rotate, thereby limiting the position of the sliding seat 703. At this time, the adjusting seat 708 moves relative to the sliding seat 703, so that the adjusting seat 708 compresses the limiting spring 707. At this time, the adjusting seat 708 compresses the limiting spring 707 until the fault recording device 4 moves to the outside of the connecting frame 3. At this time, the fault recording device 4 is released, and under the rebound of the limiting spring 707, the sliding block 703 is pushed to slide along the inner wall of the connecting seat 701, driving the rotating rod 706 to rotate. Under the rotation of the rotating rod 706, the fault recording device 4 is pushed to rotate. At this time, the fault recording device 4 is outside the connecting frame 3.

[0048] One end of the adjustment seat 708 is fixedly connected to the limit spring 707 , and the other end of the limit spring 707 is fixedly connected to the sliding block 703 , and the sliding block 703 is slidably connected to the outer peripheral wall of the adjustment screw rod 702 .

[0049] The outer peripheral wall of the adjusting screw rod 702 is sleeved with a transmission wheel 704, and the outer peripheral walls of the two transmission wheels 704 are interference-fitted with a transmission belt 705. By rotating one of the adjusting screw rods 702, the adjusting screw rod 702 drives the transmission wheel 704 sleeved on its outer peripheral wall to rotate, and the transmission belt 705 rotates, so that multiple transmission wheels 704 rotate at the same time, thereby driving multiple adjusting screw rods 702 to rotate at the same time;

[0050] Under the rotation of the adjusting screw rod 702, the adjusting seat 708 slides along the inner wall of the connecting seat 701, pushing the limit spring 707 to move. Under the movement of the limit spring 707, the sliding block 703 moves to drive the rotating rod 706 to rotate. The rotating rod 706 rotates to push the connecting seat 701 to move, thereby driving the fault recording device 4 to rotate along the rotating seat 401, and placing the fault recording device 4 at a suitable use angle;

[0051] When the use is completed, the adjusting screw rod 702 is rotated in the reverse direction to drive the adjusting seat 708 to move in the reverse direction. At this time, the sliding block 703 moves accordingly to drive the rotating rod 706 to rotate, so that the fault recording device 4 is gradually rotated and laid flat. When the adjusting seat 708 moves to the edge, the fault recording device 4 is pulled to move so that the limit spring 707 is compressed between the sliding block 703 and the adjusting seat 708. At this time, the fault recording device 4 can be rotated to fit with the placement seat 5.

[0052] When the fault recording device 4 is fitted with the placement seat 5, the fault recording device 4 is released, and under the rebound of the limit spring 707, the connecting seat 701 and the fault recording device 4 are pushed to be moved and plugged into the connecting frame 3. Under the rebound of the limit spring 707, the stability of the fault recording device 4 in the connecting frame 3 and the placement seat 5 is ensured to avoid the fault recording device 4 shaking and being damaged when the distribution cabinet 1 is hit. When deformation occurs, the impact on the placement seat 5 causes the rotating rod 706 to drive the sliding block 703 to slide, effectively avoiding direct impact on the fault recording device 4 and effectively protecting the fault recording device 4.

[0053] At this time, by rotating the limit screw 605 in the opposite direction, the adjustment block 604, the extrusion spring 603 and the limit block 602 are driven to move, and the limit block 602 is separated from the sliding rod 502, so that the placement seat 5 and the fault recording device 4 can be easily pushed into the connecting frame 3 for storage.

[0054] When the current or voltage on the line exceeds the preset threshold, the recording is triggered. When the system frequency deviates from the normal range, the recording is triggered. The recording is triggered by an external signal:

[0055] The fault recording device 4 collects electrical quantity data on the distribution network line in real time to ensure that fault information can be captured in time when a fault occurs. The fault recording device 4 improves the comprehensiveness and accuracy of fault analysis by simultaneously collecting data on multiple lines or different electrical quantities.

[0056] The collected data is then filtered by the fault recording device 4, and parameters that can reflect the fault characteristics are extracted from the filtered data. According to the extracted characteristic parameters, the waveform diagrams before and after the fault are reconstructed to facilitate intuitive observation and analysis of the fault process.

[0057] The waveform data and related information are stored and recorded through the internal memory of the fault recording device 4.

[0058] The fault recording device 4 is equipped with a standard communication interface to exchange data and communicate with external equipment such as a monitoring system and a dispatching center.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A distribution network line fault recording device, comprising a distribution cabinet (1), a connecting frame (3), a fault recording device (4), a placement seat (5) and a plurality of adjustment units (7), wherein the connecting frame (3) is installed in the distribution cabinet (1), the fault recording device (4) is arranged on the placement seat (5), the placement seat (5) is slidably connected to the inner wall of the distribution cabinet (1), the adjustment unit (7) is arranged on both sides of the fault recording device (4), a sliding rod (502) is fixedly connected to the outer wall of the placement seat (5), and the sliding rod (502) is slidably connected to the inside of the connecting frame (3); A plurality of limiting units (6) are arranged on the outer wall of the connecting frame (3), and the limiting units (6) include a fixing seat (601) fixedly connected to the connecting frame (3), and a limiting block (602) is slidably connected to the inner wall of the fixing seat (601); The adjustment unit (7) comprises a connection seat (701) fixedly connected to the outer wall of the fault recording device (4); a sliding block (703) is slidably connected to the inner wall of the connection seat (701); a rotating rod (706) is rotatably connected to the outer wall of the sliding block (703); and the other end of the rotating rod (706) is rotatably connected to the placement seat (5).

2. The distribution network line fault recording device according to claim 1, characterized in that: A fitting seat (501) is slidably connected to the inner wall of the connecting frame (3); the fitting seat (501) is fixedly connected to the placement seat (5) and a plurality of sliding rods (502); and the fitting seat (501) is located inside the connecting frame (3).

3. The distribution network line fault recording device according to claim 2, characterized in that: The sliding rod (502) fits with the limit block (602), the top end surface of the limit block (602) is fixedly connected with a compression spring (603), and the end of the compression spring (603) away from the limit block (602) is fixedly connected with an adjustment block (604).

4. The distribution network line fault recording device according to claim 3, characterized in that: The outer peripheral wall of the adjustment block (604) is bolted to a limit screw rod (605), and the limit screw rod (605) is rotatably connected to the inner wall of the fixing seat (601).

5. The distribution network line fault recording device according to claim 4, characterized in that: The placement seat (5) is slidably connected to a rotating seat (401), and the rotating seat (401) is rotatably connected to the fault recording device (4).

6. The distribution network line fault recording device according to claim 1, characterized in that: An adjusting screw rod (702) is rotatably connected to the inner wall of the connecting seat (701), and an adjusting seat (708) is threadedly connected to the outer wall of the adjusting screw rod (702).

7. The distribution network line fault recording device according to claim 6, characterized in that: One end of the adjustment seat (708) is fixedly connected to a limit spring (707), and the other end of the limit spring (707) is fixedly connected to a sliding block (703), and the sliding block (703) is slidably connected to the outer peripheral wall of the adjustment screw rod (702).

8. The distribution network line fault recording device according to claim 7, characterized in that: The outer peripheral wall of the adjusting screw rod (702) is sleeved with a transmission wheel (704), and the outer peripheral walls of the two transmission wheels (704) are interference-fitted with transmission belts (705).

9. The distribution network line fault recording device according to claim 1, characterized in that: A sealing door is rotatably connected to the outer wall of the power distribution cabinet, and a protective plate is fixedly connected to the top end surface of the power distribution cabinet.

10. A fault recording method of a distribution network line fault recording device, comprising a distribution network line fault recording device as claimed in any one of claims 1 to 9, characterized in that: When the current or voltage on the line exceeds the preset threshold, the recording is triggered. When the system frequency deviates from the normal range, the recording is triggered. The recording is triggered by an external signal: The fault recording device (4) collects electrical quantity data on the distribution network line in real time to ensure that fault information can be captured in time when a fault occurs. The fault recording device (4) improves the comprehensiveness and accuracy of fault analysis by simultaneously collecting data on multiple lines or different electrical quantities. The collected data is then filtered by a fault recording device (4), parameters that can reflect the fault characteristics are extracted from the filtered data, and waveforms before and after the fault are reconstructed based on the extracted characteristic parameters, so as to facilitate intuitive observation and analysis of the fault process. The waveform data and related information are stored and recorded via the internal memory of the fault recording device (4). The fault recording device (4) is equipped with a standard communication interface to exchange data and communicate with external equipment such as a monitoring system and a dispatching center.

Images