Remote grounding resistance monitoring device

Abstract

The utility model relates to the field of signal monitoring, in particular to a remote grounding resistance monitoring device. The remote grounding resistance monitoring device provided by the utility model comprises a grounding resistance monitoring box and a monitoring cabinet, the grounding resistance monitoring box comprises a box body and a grounding resistance monitor, the monitoring cabinet comprises a cabinet body, a processing module and a grounding resistance display module, the grounding resistance monitor is connected with a monitoring point through a monitoring cable, and the monitoring point is connected with the processing module. Signal transmission is carried out between the grounding resistance monitor and the processing module, and the processing module can output interaction information through the grounding resistance display module.

Description

Technical Field

[0001] This utility model relates to the field of signal monitoring, and in particular to a remote grounding resistance monitoring device. Background Technology

[0002] The function of the grounding resistance monitoring device is to monitor the physical quantities of the earth grid in the area where the test grounding electrode at the end of the test cable is located, and to monitor the resistance value of the earth grid and its changes.

[0003] The monitoring points for the aforementioned physical quantities are distributed in both the indoor and outdoor environments of the substation. The indoor monitoring points require monitoring equipment to be installed indoors and connected via cables, while the outdoor monitoring points also require monitoring equipment to be installed indoors and connected via cables extending outdoors.

[0004] Therefore, in traditional power distribution monitoring devices, there is a direct cable connection between the monitoring equipment installed indoors and the measurement points outdoors. When there is a lightning strike on the outdoor grounding grid, the lightning current may interfere with the monitoring equipment of the power distribution monitoring device through the cable at the outdoor measurement point, or affect other equipment installed indoors. Utility Model Content

[0005] On the one hand, this utility model provides a remote grounding resistance monitoring device, which can prevent external lightning current and other factors from entering the room where the monitoring cabinet is located through the monitoring cable, thereby interfering with the monitoring cabinet and other electrical equipment in the room;

[0006] The remote grounding resistance monitoring device provided by this utility model includes a grounding resistance monitoring box and a monitoring cabinet. The grounding resistance monitoring box includes a box body and a grounding resistance monitor. The monitoring cabinet includes a cabinet body, a processing module and a grounding resistance display module. The grounding resistance monitor is connected to the monitoring point through a monitoring cable. The grounding resistance monitor and the processing module transmit signals to each other. The processing module can output interactive information through the grounding resistance display module.

[0007] Furthermore, the grounding resistance monitoring box also includes a mounting plate, which is located inside the box body and is detachably connected to the box body. The grounding resistance monitor is detachably connected to the mounting plate.

[0008] Furthermore, the cabinet body is provided with a snap-fit ​​part, a first support member, and a baffle; a plurality of snap-fit ​​parts are spaced apart on the side wall of the cabinet body along the arrangement direction of the inner processing module box body in the cabinet body, the first support member corresponds to the grounding resistance display module and is detachably engaged with the snap-fit ​​part, the baffle is located in the cabinet body near the rear end plate of the box body, and is arranged sequentially with the rear end plate of the box body along the arrangement direction of the box body in the cabinet body, the baffle is detachably engaged with the first support member.

[0009] Furthermore, the snap-fit ​​portion includes a first mounting member extending along the arrangement direction of the box body inside the cabinet and mounting holes spaced apart on the first mounting member along the extension direction of the first mounting member, which can cooperate with the snap-fit ​​nut. One end of the first bracket member is provided with a first through hole that corresponds to the mounting hole and can pass through the bolt, and the other end is provided with a third mating surface. The baffle abuts against the third mating surface and is connected to the first bracket member by screwing.

[0010] Furthermore, the remote grounding resistance monitoring device also includes a second support member. One end of the second support member is provided with a second through hole that corresponds to the mounting hole and can pass through a bolt. The other end is provided with a first mating surface that can abut against the bottom plate of the housing. The end of the second support member near the first mating surface is provided with a second mating surface. The housing can slide along the first mating surface until the rear plate of the housing abuts against the second mating surface.

[0011] Furthermore, two connecting holes are spaced apart on the third mating surface along the arrangement direction of the box body inside the cabinet, and each connecting hole corresponds to one of the baffles.

[0012] Furthermore, the two first mounting components are symmetrically mounted on two opposite side walls of the cabinet using screws.

[0013] Furthermore, the cabinet has a rear opening corresponding to the rear end plate of the box body, the rear end plate of the box body is provided with a wiring port, the baffle is provided with a wiring terminal, the wiring terminal has an inlet end and an outlet end, the inlet end is located on the side of the baffle facing the rear opening, and the outlet end is located on the side of the baffle facing the front opening.

[0014] Furthermore, a second mounting component is provided on the side wall of the cabinet between the rear opening and the first mounting component, and a number of cable clips are provided on the second mounting component at intervals along the arrangement direction of the cabinet body inside the cabinet.

[0015] Furthermore, the baffle is flush with the rear end plate of the housing.

[0016] Beneficial effects

[0017] This solution aims to achieve remote monitoring of grounding resistance. Compared to the traditional method of running cables from an indoor local monitoring cabinet to the monitoring point to collect grounding resistance data, the grounding resistance monitoring device in this solution includes a remote grounding resistance monitoring box and an indoor monitoring cabinet. Cables are run from the grounding resistance monitoring box to the monitoring point to collect grounding resistance data, and the measured data is transmitted to the monitoring cabinet.

[0018] The monitoring cabinet houses a processing module and a grounding resistance display module. The processing module outputs the acquired data through the grounding resistance display module in a manner accessible to the operator, such as via a screen, lights, or sound, or a combination of these methods. Since this solution eliminates the direct cable connection between outdoor measurement points and the monitoring cabinet, the connection between the outdoor grounding resistance monitoring device and the cabinet is solely via an information cable. Physical isolation exists between the monitoring cabinet and the outdoor monitoring points, preventing external factors such as lightning strikes from entering the indoor environment through the monitoring cable and interfering with the indoor monitoring cabinet and other electrical equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0020] Figure 1 This is an overall schematic diagram of the monitoring cabinet provided in this embodiment of the utility model;

[0021] Figure 2 This is an overall schematic diagram of the grounding resistance monitoring box provided in this embodiment of the utility model;

[0022] Figure 3 This is a partial structural diagram of the baffle provided in an embodiment of the present utility model;

[0023] Figure 4 This is a partial structural diagram of the snap-fit ​​portion provided in an embodiment of the present utility model.

[0024] Reference numerals: 1-Cabinet; 2-Box; 3-Grounding resistance display module; 4-Baffle; 5-Box body; 6-Grounding resistance monitor; 7-Circuit breaker; 8-Power module; 9-Rear panel; 10-Snap-fit ​​part; 11-First bracket; 12-Second bracket; 13-First mating surface; 14-Second mating surface; 15-Third mating surface; 16-Mounting hole. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] Example

[0027] A remote grounding resistance monitoring device includes a grounding resistance monitoring box and a monitoring cabinet. The grounding resistance monitoring box includes a box body 5 and a grounding resistance monitor 6. The monitoring cabinet includes a cabinet body 1, a processing module and a grounding resistance display module 3. The grounding resistance monitor 6 is connected to the monitoring point through a monitoring cable. The grounding resistance monitor 6 transmits signals to the processing module. The processing module can output interactive information through the grounding resistance display module 3.

[0028] The monitoring cabinet is located in an indoor environment such as a power distribution room. The cabinet body 1 contains multiple enclosures 2, each housing corresponding functional components, such as a power supply and terminal, as well as other monitoring devices, such as an electrical integrity monitor. The power supply powers the functional components in each enclosure 2. The terminal analyzes and processes the data transmitted by the measurement components, displaying the results or uploading them to external devices. The enclosures 2 are arranged from top to bottom within the power distribution cabinet. In addition, to complement the grounding resistance monitoring box, a grounding resistance display module 3 is also installed within the cabinet. The grounding resistance monitoring box is located at a relatively far outdoor location. After its grounding resistance monitor 6 measures the data, the grounding resistance monitoring box transmits the data to the monitoring cabinet. The data is processed by the processing module, and the results are displayed on the light or screen of the grounding resistance display module 3, allowing the operator to obtain the measurement results from the remote grounding resistance monitoring box from the monitoring cabinet.

[0029] In one alternative embodiment, the grounding resistance monitoring box further includes a mounting plate located inside the box body 5 and detachably coupled to the box body 5, and the grounding resistance monitor 6 is detachably coupled to the mounting plate.

[0030] The grounding resistance monitoring box contains a power module 8, a circuit breaker 7, and a grounding resistance monitor 6 inside its main body 5. These components are fixed to the mounting plate with screws. The mounting plate facilitates the installation and removal of components within the main body 5. In this design, the power module 8, circuit breaker 7, and grounding resistance monitor 6 can be assembled with the mounting plate before the mounting plate is placed inside the main body 5 and secured. This avoids the problem of inconvenient installation and wiring of components due to the narrow space inside the main body 5.

[0031] The grounding resistance monitor 6 is powered by the power supply line inside the monitoring cabinet or by an external power supply circuit. After the power supply cable passes through the cabinet body 5, it passes through the circuit breaker 7 and the power module 8 in sequence, and is plugged into the corresponding port of the grounding resistance monitor 6.

[0032] In one optional embodiment, the cabinet 1 is provided with a snap-fit ​​part 10, a first support member 11 and a baffle 4; a plurality of snap-fit ​​parts 10 are spaced apart on the side wall of the cabinet 1 along the arrangement direction of the inner processing module box 2 in the cabinet 1; the first support member 11 corresponds to the grounding resistance display module 3 and is detachably engaged with the snap-fit ​​part 10; the baffle 4 is located in the cabinet 1 near the rear end plate 9 of the box 2, and is arranged sequentially with the rear end plate 9 of the box 2 along the arrangement direction of the box 2 in the cabinet 1; the baffle 4 is detachably engaged with the first support member 11.

[0033] The grounding resistance display module 3 and the enclosure 2 are arranged from top to bottom inside the cabinet 1 of the monitoring cabinet, forming an interactive side facing the operator at the front opening of the cabinet 1. On the other side of the cabinet 1, the rear panel 9 of the enclosure 2 is provided with cable ports. The cables in the distribution cabinet are arranged from top to bottom at the rear panel 9 of the enclosure 2 and connected to the corresponding cable ports. Since the grounding resistance display module 3 is similar to a light panel structure and its size is smaller than that of the enclosure 2, the side of the grounding resistance display module 3 corresponding to the rear panel 9 of the enclosure 2 cannot be kept flat with the rear panel 9 of the enclosure 2. The cables in the cabinet 1 need to be attached to a relatively flat mating surface to form a clear and easily distinguishable cable bundle arrangement. The size of the grounding resistance display module 3 makes it impossible for it to be relatively flat with the rear panel 9 of the enclosure 2, which is not conducive to the cable arrangement.

[0034] To ensure a relatively flat mating surface at the rear end plate 9 of the enclosure 2 when a grounding resistance display module 3 is installed inside the distribution cabinet, a baffle 4 structure is provided inside the distribution cabinet in this solution. The baffle 4 is set corresponding to the grounding resistance display module 3. When there is a grounding resistance display module 3 inside the cabinet 1 from top to bottom, such as when there is a grounding resistance display module 3 between the enclosure 2 containing the electrical integrity monitor and the power supply, a baffle 4 is provided inside the cabinet 1 at the position between the rear end plates 9 of the two enclosure 2. The baffle 4 is close to the rear end plates 9 of the enclosure 2, so that the gap between the rear end plates 9 of the two enclosure 2 is closed by the baffle 4. The two rear end plates 9 and the baffle 4 form a relatively flat mating surface extending from top to bottom inside the cabinet 1, so that the cables can be arranged from top to bottom at the rear end plates 9 of the two enclosure 2.

[0035] Preferably, the baffle 4 is flush with the rear end plate of the housing 2.

[0036] In one optional embodiment, the snap-fit ​​part 10 includes a first mounting member extending along the arrangement direction of the housing 2 in the cabinet 1 and mounting holes 16 spaced apart on the first mounting member along the extension direction of the first mounting member, which can cooperate with the snap-fit ​​nut. One end of the first bracket member 11 is provided with a first through hole that corresponds to the mounting hole 16 and can pass through the bolt, and the other end is provided with a third mating surface 15. The baffle 4 abuts against the third mating surface 15 and is connected to the first bracket member 11 by screwing.

[0037] Mounting holes 16 are spaced apart from top to bottom on the first mounting member. Each clip nut has a snap-fit ​​structure at one end, which can engage with the edge of the mounting hole 16, thus forming a screw hole on the first mounting member. The first bracket member 11 is bent into an L-shape, so that one plate is parallel to the side wall of the cabinet 1, and the other plate is parallel to the rear end plate 9 of the box 2. The plate of the first mounting member near the side wall has a first through hole, and the first bracket member 11 is engaged with the clip nut by bolts. The other plate forms a third mating surface 15 parallel to the rear end plate 9 of the box 2. The baffle 4 abuts against the third mating surface 15 and is connected to the first bracket member 11 by screws, so that the baffle 4 is parallel to the rear end plate 9 of the box 2, and the rear end plate 9 of the box 2 and the baffle 4 form a relatively flat mating surface.

[0038] In one optional embodiment, the remote grounding resistance monitoring device further includes a second support member 12. One end of the second support member 12 is provided with a second through hole that corresponds to the mounting hole 16 and can pass through a bolt. The other end is provided with a first mating surface 13 that can abut against the bottom plate of the housing 2. A second mating surface 14 is provided at the end of the second support member near the first mating surface 13. The housing 2 can slide along the first mating surface 13 until the rear end plate of the housing 2 abuts against the second mating surface 14.

[0039] The housing 2 is connected to the cabinet 1 via the second bracket 12. Specifically, the second bracket 12 is connected to the first mounting component. A locking nut is embedded in the mounting hole 16 on the first mounting component. The second bracket 12 has a second through hole, which is engaged with the locking nut by a bolt. The second support member 12 is bent to form an L-structure, so that one of the plates is parallel to the side wall of the cabinet 1. A second through hole is opened on the plate, which is engaged with a bolt and a clip nut. A first mating surface 13 is formed on the other plate. The first mating surface 13 and the bottom plate of the box 2 cooperate to form a slide rail, so that the box 2 can be moved into the cabinet from the front opening of the cabinet and then slide into position on the first mating surface 13. In this solution, the sliding position is reached when the box 2 slides to a preset position where the next wiring process can be carried out. Specifically, in order to facilitate the determination of the sliding position of the box 2, the end of the plate with the first mating surface 13 near the rear opening of the cabinet 1 is bent to form a second mating surface 14. The box 2 can slide along the first mating surface 13 until its rear plate abuts against the second mating surface 14. At this time, the box 2 is confirmed to be in position.

[0040] In one optional embodiment, two connecting holes are provided on the third mating surface 15 at intervals along the arrangement direction of the box 2 in the cabinet 1, and each connecting hole corresponds to a baffle 4.

[0041] When multiple display modules are arranged continuously from top to bottom, the corresponding baffles 4 are also arranged continuously from top to bottom. Therefore, multiple first support members 11 are arranged at intervals from top to bottom, and a baffle 4 is provided between every two first support members 11.

[0042] Preferably, two first mounting components are symmetrically mounted on two opposite side walls of the cabinet 1 by screws, and a number of first support components 11 are symmetrically arranged on the two first mounting components, that is, each baffle 4 has four screw holes and is connected to four first support components 11.

[0043] In one optional embodiment, the cabinet 1 has a rear opening corresponding to the rear end plate of the box 2. The rear end plate of the box 2 is provided with a wiring port, and the baffle 4 is provided with a wiring terminal. The wiring terminal has an inlet end and an outlet end. The inlet end is located on the side of the baffle 4 facing the rear opening, and the outlet end is located on the side of the baffle 4 facing the front opening.

[0044] Cabinet 1 has a front opening and a rear opening. The side wall panels are located between the front opening and the rear opening. That is, the two opposite side wall panels and the upper and lower end panels enclose and form cabinet 1 with openings at both ends. When the box 2 and the grounding resistance display module 3 are located inside the cabinet 1, the rear end panel of the box 2, which is arranged from top to bottom, forms a cable arrangement area between it and the rear opening of the cabinet 1. The grounding resistance display module 3 and the front end face of the box 2 face the front opening of the cabinet 1 to form an interactive side facing the operator.

[0045] When multiple grounding resistance display modules 3 are arranged continuously from top to bottom, the corresponding baffles 4 are also arranged continuously from top to bottom. The baffles 4 and the grounding resistance display modules 3 form a relatively independent space. To facilitate the cable arrangement of the grounding resistance display modules 3, at least one baffle 4 is provided with a terminal block. The cable is electrically connected to the inlet end of the terminal block, and then the cable is electrically connected to the grounding resistance display modules 3 and other display modules through the outlet end of the terminal block.

[0046] When assembling the grounding resistance display module 3, first connect the grounding resistance display module 3 to the cabinet 1, then connect the cables at the output end of the wiring terminal on the baffle 4 to each grounding resistance display module 3, then connect the baffle 4 to the cabinet 1, and finally connect the cables inside the cabinet 1 to the input end of the wiring terminal.

[0047] In one optional embodiment, a second mounting component is provided on the side wall of the cabinet 1 between the rear opening and the first mounting component, and a plurality of cable clips are provided on the second mounting component at intervals along the arrangement direction of the cabinet 2 inside the cabinet 1.

[0048] The second mounting component is arranged parallel to the first mounting component, which is also a strip-shaped structure extending downwards within the cabinet 1 and connected to the side wall of the cabinet 1 by screws. Several cable clips are arranged on the second mounting component from top to bottom using screws or clips. Their function is to secure the cables, allowing them to be arranged from top to bottom within the power distribution area of ​​the cabinet 1 without tangling. When the cables on the second mounting component pass through the corresponding enclosure 2 or baffle 4, they extend laterally to the cable port on the rear panel 9 of the enclosure 2; when the cables pass through the baffle 4 equipped with terminals, they extend laterally to the power connection terminal.

[0049] It should be noted that any of the above embodiments are illustrative of the present invention and not limiting of it, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising a plurality of different elements and by means of a suitably programmed computer. In the unit claims enumerating a plurality of means, several of these means may be embodied by the same item of hardware. The use of the words first-level, second-level, preceding, and following, etc., does not indicate any order. These words may be interpreted as names.

[0050] The above embodiments are only suitable for illustrating the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model, and the patent protection scope of the present utility model should be defined by the claims.

Claims

1. A remote grounding resistance monitoring device, characterized in that, It includes a ground resistance monitoring box and a monitoring cabinet. The ground resistance monitoring box includes a box body (5) and a ground resistance monitoring instrument (6). The monitoring cabinet includes a cabinet body (1), a processing module and a ground resistance display module (3). The ground resistance monitoring instrument (6) is connected to the monitoring point through a monitoring cable. The ground resistance monitoring instrument (6) and the processing module transmit signals to each other. The processing module can output interactive information through the ground resistance display module (3).

2. The remote grounding resistance monitoring device according to claim 1, characterized in that, The grounding resistance monitoring box also includes a mounting plate, which is located inside the box body (5) and is detachably connected to the box body (5). The grounding resistance monitor (6) is detachably connected to the mounting plate.

3. The remote grounding resistance monitoring device according to claim 1, characterized in that, The cabinet (1) is provided with a snap-fit ​​part (10), a first support member (11) and a baffle (4); a plurality of snap-fit ​​parts (10) are arranged at intervals on the side wall of the cabinet (1) along the arrangement direction of the box (2) of the inner processing module in the cabinet (1); the first support member (11) corresponds to the grounding resistance display module (3) and is detachably engaged with the snap-fit ​​part (10); the baffle (4) is located in the cabinet (1) near the rear end plate (9) of the box (2), and is arranged sequentially with the rear end plate (9) of the box (2) along the arrangement direction of the box (2) in the cabinet (1); the baffle (4) is detachably engaged with the first support member (11).

4. The remote grounding resistance monitoring device according to claim 3, characterized in that, The snap-fit ​​part (10) includes a first mounting member extending along the arrangement direction of the box (2) in the cabinet (1) and mounting holes (16) spaced apart on the first mounting member along the extension direction of the first mounting member, which can cooperate with the snap-fit ​​nut. One end of the first bracket (11) is provided with a first through hole that corresponds to the mounting hole (16) and can pass through the bolt, and the other end is provided with a third mating surface (15). The baffle (4) abuts against the third mating surface (15) and is connected to the first bracket (11) by screwing.

5. The remote grounding resistance monitoring device according to claim 4, characterized in that, The remote grounding resistance monitoring device also includes a second support member (12). One end of the second support member (12) is provided with a second through hole that corresponds to the mounting hole (16) and can pass through a bolt. The other end is provided with a first mating surface (13) that can abut against the bottom plate of the housing (2). A second mating surface (14) is provided at the end of the second support member near the first mating surface (13). The housing (2) can slide along the first mating surface (13) until the rear end plate of the housing (2) abuts against the second mating surface (14).

6. The remote grounding resistance monitoring device according to claim 4, characterized in that, Two connecting holes are provided on the third mating surface (15) along the arrangement direction of the box (2) in the cabinet (1), and each connecting hole corresponds to a baffle (4).

7. The remote grounding resistance monitoring device according to claim 4, characterized in that, The two first mounting pieces are symmetrically mounted on the two opposite side walls of the cabinet (1) by screws.

8. The remote grounding resistance monitoring device according to claim 5, characterized in that, The cabinet (1) has a rear opening corresponding to the rear end plate of the box (2). The rear end plate of the box (2) is provided with a wiring port. The baffle (4) is provided with a wiring terminal. The wiring terminal has an inlet end and an outlet end. The inlet end is located on the side of the baffle (4) facing the rear opening, and the outlet end is located on the side of the baffle (4) facing the front opening.

9. The remote grounding resistance monitoring device according to claim 7, characterized in that, A second mounting component is provided on the side wall of the cabinet (1) between the rear opening and the first mounting component. Several cable clips are provided on the second mounting component at intervals along the arrangement direction of the box (2) inside the cabinet (1).

10. The remote grounding resistance monitoring device according to claim 4, characterized in that, The baffle (4) is flush with the rear end plate of the box (2).

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