An under-voltage based power distribution network fault detection device

Abstract

This utility model belongs to the technical field of distribution network fault detection devices, specifically an undervoltage-based distribution network fault detection device. It includes a storage box with a partition fixedly connected inside, a fixed frame fixedly connected inside the storage box, a voltage monitor installed inside the fixed frame, a placement slot inside the storage box for a clamp-on voltage transformer, and a sliding cover inside the storage box. Two locking plates are slidably connected inside the cover, and a spring is installed inside the cover, with both ends fixedly connected to the cover and locking plates. One locking plate is slidably connected inside the storage box, and the other is slidably connected inside the partition. This utility model can simultaneously store the voltage monitor, clamp-on voltage transformer, and connecting wires inside the storage box, making it easy to carry.

Description

Technical Field

[0001] This utility model belongs to the technical field of distribution network fault detection devices, specifically a distribution network fault detection device based on undervoltage. Background Technology

[0002] The distribution network is a crucial link in the power system connecting the transmission network and user terminals. It primarily distributes the electrical energy transmitted from the transmission network to various users, meeting their diverse electricity needs. Undervoltage refers to an abnormal state in the distribution network where the voltage amplitude at a point is lower than the rated value by a certain percentage (usually 80% to 90% below the rated voltage) for a duration exceeding a specified threshold (e.g., a few seconds to several minutes). Therefore, voltage monitoring instruments and clamp-on voltage transformers are used in conjunction to detect faults in the distribution network.

[0003] In the existing technology, when performing fault detection work in the power distribution network, it is necessary to carry a voltage monitor and a clamp-on voltage transformer to the location to be tested. However, the voltage monitor and the clamp-on voltage transformer are usually placed separately. The voltage monitor is stored separately in a small box. Moreover, the voltage monitor and the clamp-on voltage transformer need to be connected to each other through a connecting cable when they are used. The storage box for the voltage monitor is too small to store the clamp-on voltage transformer and the connecting cable together with the voltage monitor. Summary of the Invention

[0004] The purpose of this invention is to provide a distribution network fault detection device based on undervoltage, which can store the clamp-on voltage transformer and connecting wire together with the voltage monitor inside the storage box, making it easy to carry.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A distribution network fault detection device based on undervoltage is provided, comprising a storage box, a partition fixedly connected inside the storage box, a fixing frame fixedly connected inside the storage box, a voltage monitor installed inside the fixing frame, a placement slot provided inside the storage box, a clamp-on voltage transformer placed inside the placement slot, a cover slidably connected inside the storage box, two locking plates slidably connected inside the cover, and a spring provided inside the cover, with both ends of the spring fixedly connected inside the cover and the locking plates. One of the card plates is slidably connected inside the storage box, and the other card plate is slidably connected inside the partition. The card cover has a card slot inside. The outer wall of the clamp-type voltage transformer fits against the inner wall of the card slot. Two sets of wire clamping assemblies are installed inside the storage box. The wire clamping assembly includes a base. The base is fixedly connected inside the storage box. The base has a first clamp and a second clamp rotatably connected inside. The first clamp and the second clamp are symmetrically arranged inside the base. The lower surface of the first clamp and the second clamp are both fixedly connected to a second spring. The end of the second spring away from the first clamp and the second clamp is fixedly connected inside the base.

[0006] Optionally, the upper surface of the storage box is provided with a lid, the storage box and the lid are connected by a hinge, the outer walls of the storage box and the lid are equipped with buckles, and the outer wall of the storage box is rotatably connected with a handle.

[0007] Optionally, the voltage monitor is slidably connected inside the fixed frame, and connecting plates are slidably connected to both sides of the inside of the fixed frame. Two locking pins are fixedly connected to the outer wall of the connecting plate, and the end of the locking pin away from the connecting plate is slidably connected to the inside of the voltage monitor.

[0008] Optionally, the locking pin is slidably connected inside the fixed frame, and a spring is installed on the outer wall of the connecting plate. The two ends of the spring are respectively fixedly connected to the connecting plate and the inside of the storage box.

[0009] Optionally, the bottom of the mounting bracket is provided with multiple heat dissipation holes, and multiple heat dissipation fins are fixedly connected to the lower surface of the mounting bracket.

[0010] Optionally, the storage box has multiple ventilation holes on both sides inside, and filter plates are fixedly connected inside the ventilation holes.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model is equipped with a fixing frame, a placement slot, a cover, a clamping plate, a spring, a partition, a slot, and a wire clamping assembly. The voltage monitor is installed inside the fixing frame, and the clamp-on voltage transformer is placed inside the placement slot. Then, the clamping plates on both sides inside the cover are moved to slide the plates inward. The cover is then moved down so that the slot is engaged with the outer wall of the clamp-on voltage transformer. At the same time, the clamping plates are released, and the spring pushes the plates back to their original position, so that the plates are engaged inside the storage box and the partition, thereby limiting and fixing the clamp-on voltage transformer. The clamping plates are pressed to compress the spring and rotate to open. The bundled connecting wire is placed between the clamping plates. The clamping plates are released, and the spring returns to its original position, causing the clamping plates to return to their original position, so that the connecting wire is clamped between the clamping plates. The voltage monitor, clamp-on voltage transformer, and connecting wire can be stored simultaneously inside the storage box, making it convenient to carry.

[0013] 2. This utility model includes a fixed frame, a connecting plate, a locking pin, a spring, heat dissipation holes, heat dissipation fins, vents, and a filter plate. When the voltage monitor is slidably placed inside the fixed frame, the outer wall of the voltage monitor presses against the locking pins on both sides of the fixed frame, causing the locking pins to slide to both sides and drive the connecting plate to compress the spring. When the voltage monitor has completely slid into the fixed frame, the spring returns to its original position, causing the connecting plate and the locking pin to slide, so that one end of the locking pin is locked inside the voltage monitor, limiting the voltage monitor within the fixed frame. The heat generated by the voltage monitor during operation is discharged through the heat dissipation holes and dissipated through the heat dissipation fins, and the vents inside the storage box also facilitate heat dissipation. The filter plate prevents dust from entering the interior of the storage box. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the storage box of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the card cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the placement groove of this utility model;

[0020] Figure 6 This is a schematic diagram of the card slot structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the wire clamping assembly of this utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the fixing frame of this utility model.

[0023] In the diagram: 1. Storage box; 101. Box lid; 102. Handle; 103. Buckle; 104. Vent hole; 105. Fixing frame; 106. Cover; 107. Clamping plate; 108. Spring 1; 109. Divider; 110. Placement slot; 111. Slot; 112. Heat dissipation hole; 113. Heat dissipation fins; 2. Voltage monitor; 3. Clamp-on voltage transformer; 4. Wire clamp assembly; 401. Base; 402. Clamping plate 1; 403. Clamping plate 2; 404. Spring 2; 5. Connecting plate; 501. Locking pin; 502. Spring 3; 6. Filter plate. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] The present invention will now be described. A distribution network fault detection device based on undervoltage includes a storage box 1. A partition 109 is fixedly connected inside the storage box 1, dividing the interior into three areas to facilitate simultaneous storage of a voltage monitor 2, a clamp-on voltage transformer 3, and connecting wires. A mounting frame 105 is fixedly connected inside the storage box 1, and the voltage monitor 2 is installed inside the mounting frame 105. A placement slot 110 is provided inside the storage box 1, and the clamp-on voltage transformer 3 is placed inside the placement slot 110. The clamp-on voltage transformer 3 is positioned within the placement slot 110. A cover 106 is slidably connected inside the storage box 1. Two locking plates 107 are slidably connected inside the cover 106, and the locking plates 107 are slidably positioned within the cover 106. A spring 108 is provided inside the cover 106, with both ends of the spring 108 fixedly connected to the cover 106 and the locking plates 107. One locking plate 107 is slidably connected inside the storage box 1, and the other locking plate 107 is slidably connected inside the partition 109. Two clamping plates 107 are respectively positioned and locked inside the storage box 1 and the partition 109, fixing the clamp cover 106 inside the storage box 1. The clamp cover 106 has a slot 111 inside. The outer wall of the clamp-on voltage transformer 3 fits against the inner wall of the slot 111. The slot 111, in conjunction with the placement groove 110, clamps and limits the clamp-on voltage transformer 3. Two sets of wire clamping assemblies 4 are installed inside the storage box 1. Each wire clamping assembly 4 includes a base 401, which is fixedly connected inside the storage box 1. The base 401 is internally connected by a first clamp 402 and a second clamp 403. The first clamp 402 and the second clamp 403 are symmetrically arranged inside the base 401. One end of the first clamp 402 is attached to one end of the second clamp 403, so that a circular hole-like area is formed between the first clamp 402 and the second clamp 403. The lower surface of the first clamp 402 and the second clamp 403 are fixedly connected to a second spring 404. The end of the second spring 404 away from the first clamp 402 and the second clamp 403 is fixedly connected to the inside of the base 401.

[0029] The present invention provides a distribution network fault detection device based on undervoltage, which, compared with the prior art, can simultaneously store the clamp-on voltage transformer 3 and the connecting wire and the voltage monitor 2 in the same storage box 1, making it convenient to carry.

[0030] Please refer to another embodiment of this utility model as well. Figures 1 to 8 The upper surface of the storage box 1 is provided with a lid 101, and the storage box 1 and the lid 101 are connected by a hinge. Buckles 103 are installed on the outer walls of the storage box 1 and the lid 101, which limit and fix the storage box 1 and the lid 101. A handle 102 is rotatably connected to the outer wall of the storage box 1, making it easy to lift the storage box 1. The voltage monitor 2 is slidably connected inside the fixing frame 105. Connecting plates 5 are slidably connected to both sides inside the fixing frame 105. Two locking pins 501 are fixedly connected to the outer wall of the connecting plate 5, with the locking pins 501 being away from the connecting plate 5. One end is slidably connected to the inside of the voltage monitor 2, and the locking pin 501 is slidably connected to the inside of the fixed frame 105. The locking pin 501 is limited to slide inside the fixed frame 105. A spring 3 502 is installed on the outer wall of the connecting plate 5. The two ends of the spring 3 502 are respectively fixedly connected to the inside of the connecting plate 5 and the storage box 1. Multiple heat dissipation holes 112 are opened at the bottom of the inside of the fixed frame 105. Multiple heat dissipation fins 113 are fixedly connected to the lower surface of the fixed frame 105. Multiple ventilation holes 104 are opened on both sides of the inside of the storage box 1. A filter plate 6 is fixedly connected inside the ventilation hole 104.

[0031] Working principle: When detecting faults in the distribution network, the storage box 1 is carried to the location to be tested via the handle 102. The box cover 101 is separated from the storage box 1 via the buckle 103. The box cover 101 is rotated to open, and then the two clamping plates 107 are moved to slide into the inside of the clamping cover 106 and disengage from the storage box 1 and the partition 109. At this time, the clamping cover 106 is lifted to separate it from the clamp-on voltage transformer 3. The clamp-on voltage transformer 3 is then removed. Then, the clamping plates 402 and 403 are pressed to rotate and open to both sides, allowing the connecting wire to be removed. The two ends of the connecting wire are connected to the voltage monitor 2 and the clamp-on voltage transformer 3 respectively. The clamp grips the outer surface of the power distribution cable to be tested, ensuring the cable is centered in the clamp. The clamp-on voltage transformer 3 collects and outputs the voltage signal of the cable. The voltage monitor 2 collects the voltage signal output by the clamp-on voltage transformer 3 in real time and converts it into the actual voltage value. The voltage monitor 2 displays the voltage value and waveform in real time and provides voltage anomaly alarms. The voltage monitor 2 typically has a threshold setting function, allowing users to set upper and lower voltage limits as needed. When the voltage in the power grid is lower or higher than the set threshold, the voltage monitor 2 automatically triggers the alarm system and records the event, thus achieving the function of detecting undervoltage faults in the power distribution network. The heat generated by the voltage monitor 2 during operation is dissipated through the heat dissipation holes 112 and cooled by heat dissipation. Fins 113 emit heat, which, together with vents 104, allows heat to escape to the outside of storage box 1; filter plate 6 prevents dust from entering the interior of storage box 1; after testing, remove clamp-on voltage transformer 3 from the outer surface of the cable, separate the connecting wire from the connection between voltage monitor 2 and clamp-on voltage transformer 3, wrap the connecting wire tightly, press clamp 1 402 and clamp 2 403 to rotate and separate clamp 1 402 and clamp 2 403, place the connecting wire between clamp 1 402 and clamp 2 403, release clamp 1 402 and clamp 2 403, so that spring 2 404 drives clamp 1 402 and clamp 2 403 to reset and clamp the connecting wire, place clamp-on voltage transformer 3 inside placement slot 110, and remove the cover. 106. Move the two locking plates 107, causing the locking plates 107 to slide into the cover 106 and compress the spring 108. Slide the cover 106 between the storage box 1 and the partition 109, so that the slot 111 covers the outer wall of the clamp-on voltage transformer 3. Then release the locking plates 107, so that the spring 108 drives the locking plates 107 to reset, pushing the locking plates 107 into the storage box 1 and the partition 109 to limit and fix the cover 106, thereby limiting the clamp-on voltage transformer 3. Then close the box cover 101 and lock the box cover 101 to the storage box 1 with the buckle 103. The storage box 1 can be easily lifted by the handle 102, so that the voltage monitor 2, the clamp-on voltage transformer 3 and the connecting wire can be carried at the same time.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An under-voltage based power distribution network fault detection apparatus comprising a storage box (1), characterized in that: The storage box (1) is fixedly connected to a partition (109) and a fixing frame (105). A voltage monitor (2) is installed inside the fixing frame (105). A placement slot (110) is opened inside the storage box (1). A clamp-on voltage transformer (3) is placed inside the placement slot (110). A cover (106) is slidably connected inside the storage box (1). Two plates (107) are slidably connected inside the cover (106). A spring (108) is provided inside the cover (106). The two ends of the spring (108) are fixedly connected to the inside of the cover (106) and the plates (107). One plate (107) is slidably connected inside the storage box (1), and the other plate (107) is slidably connected to the partition. Inside (109), the card cover (106) has a card slot (111) inside. The outer wall of the clamp-type voltage transformer (3) is in contact with the inner wall of the card slot (111). The storage box (1) is equipped with two sets of wire clamping assemblies (4). The wire clamping assembly (4) includes a base (401). The base (401) is fixedly connected to the inside of the storage box (1). The base (401) is rotatably connected with a clamping plate one (402) and a clamping plate two (403). The clamping plate one (402) and the clamping plate two (403) are symmetrically arranged inside the base (401). The lower surfaces of the clamping plate one (402) and the clamping plate two (403) are fixedly connected with a spring two (404). The end of the spring two (404) away from the clamping plate one (402) and the clamping plate two (403) is fixedly connected to the inside of the base (401).

2. The under-voltage based power distribution network fault detection apparatus as claimed in claim 1, wherein: The upper surface of the storage box (1) is provided with a lid (101), and the storage box (1) and the lid (101) are connected by a hinge. The outer walls of the storage box (1) and the lid (101) are equipped with buckles (103), and the outer wall of the storage box (1) is rotatably connected with a handle (102).

3. The under-voltage based power distribution network fault detection apparatus of claim 1, wherein: The voltage monitor (2) is slidably connected inside the fixed frame (105). The fixed frame (105) has connecting plates (5) slidably connected on both sides inside. The outer wall of the connecting plate (5) is fixedly connected with two locking pins (501). The end of the locking pin (501) away from the connecting plate (5) is slidably connected inside the voltage monitor (2).

4. The under-voltage based power distribution network fault detection apparatus of claim 3, wherein: The latch (501) is slidably connected inside the fixed frame (105), and a spring (502) is installed on the outer wall of the connecting plate (5). The two ends of the spring (502) are respectively fixedly connected inside the connecting plate (5) and the storage box (1).

5. The under-voltage based power distribution network fault detection apparatus of claim 4, wherein: The bottom of the mounting bracket (105) is provided with a plurality of heat dissipation holes (112), and a plurality of heat dissipation fins (113) are fixedly connected to the lower surface of the mounting bracket (105).

6. The under-voltage based power distribution network fault detection apparatus of claim 5, wherein: The storage box (1) has multiple ventilation holes (104) on both sides inside, and a filter plate (6) is fixedly connected inside the ventilation hole (104).

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