Intelligent detection device for ground fault of power distribution network

Abstract

The invention relates to the technical field of detection devices, and discloses a power distribution network grounding fault intelligent detection device, which comprises a positioning assembly, one side of the top of the positioning assembly is fixedly connected with an electromagnetic assembly, the outer side of the electromagnetic assembly is provided with a grounding assembly, and the positioning assembly comprises a first fixing block. A first telescopic positioning column is fixedly connected to the other side of the first fixing block, a spring is fixedly connected to the bottom of the inner side of the first telescopic positioning column, a first limiting circular plate is fixedly connected to the top of the spring, and a telescopic rod is fixedly connected to the top of the first limiting circular plate. In the working process, the second guiding device is connected into a power distribution network needing to be detected, then a spring wire is wound on the outer side of a winding column, and then a positioning circular plate and a positioning pin are inserted into the ground, so that equipment installation can be completed, a user can conveniently and rapidly connect the equipment into a circuit, and therefore the user can conveniently use the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and more particularly to an intelligent detection device for grounding faults in a distribution network. Background Art

[0002] As the final link in the power system's user-facing interface, the distribution network covers a wide area and operates in a complex environment, directly impacting power supply reliability and safety. Single-phase grounding faults are the most common and frequent fault type in distribution networks, accounting for over 80% of all faults.

[0003] In systems with ineffective neutral grounding (including those with no grounding, grounding via arc suppression coils, or high-resistance grounding), when a single-phase ground fault occurs, the fault loop does not constitute a low-impedance short-circuit path, resulting in a low ground current (typically less than 10A). The system line voltage remains symmetrical, and continuous power supply to the load is not affected. Operating procedures allow the system to operate with a ground fault for 1-2 hours. However, this does not mean that the fault can be ignored. Failure to promptly detect, locate, and eliminate the fault point can lead to serious consequences.

[0004] Deficiencies of existing technology: Existing detection devices detect whether a circuit is faulty by detecting whether the circuit is open, but cannot directly determine whether the grounding wire is working properly. Therefore, it is not convenient for users to directly detect whether the distribution network is working properly. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent detection device for grounding faults in a distribution network to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: An intelligent detection device for grounding faults in a distribution network, comprising a positioning component, an electromagnetic component is fixedly connected to one side of the top of the positioning component, a grounding component is provided on the outside of the electromagnetic component, the positioning component comprises a first fixed block, a first telescopic positioning column is fixedly connected to the other side of the first fixed block, a spring is fixedly connected to the bottom of the inner side of the first telescopic positioning column, a first limiting circular plate is fixedly connected to the top of the spring, a telescopic rod is fixedly connected to the top of the telescopic rod, an electromagnetic circular plate is fixedly connected to the top of the inner side of the first telescopic positioning column, a position detection ring is fixedly connected to.

[0007] Furthermore, the electromagnetic assembly includes a second telescopic positioning column, a lifting limit plate is provided on the inner side of the second telescopic positioning column, a first bearing is installed on the top of the lifting limit plate, a telescopic threaded rod is installed on the inner side of the first bearing, a second bearing is installed on the outer side of the telescopic threaded rod near the top, the top of the telescopic threaded rod is fixedly connected to a rotating circular plate, the top of the rotating circular plate is fixedly connected to a rotating column, a fixed plate is installed on the outer side of the second bearing, the bottom of the fixed plate is fixedly connected to a supporting positioning rod, the other side of the fixed plate is fixedly connected to a fixed circular plate, the bottom of the fixed circular plate is fixedly connected to a winding column, and the outer side of the winding column is fixedly connected to a second limiting circular plate.

[0008] Furthermore, the grounding component includes a spring wire, the top of the spring wire is fixedly connected to a first guide, the end of the first guide away from the spring wire is fixedly connected to a second guide, the bottom of the spring wire is fixedly connected to a third wire, the end of the third wire away from the spring wire is fixedly connected to a fourth wire, the bottom of the fourth wire is fixedly connected to a positioning circular plate, and the bottom of the positioning circular plate is fixedly connected to a positioning pin.

[0009] Furthermore, a positioning groove is provided at the top of the inner side of the first telescopic positioning column, the inner diameter of the position detection ring is clearance-matched with the inner diameter of the first telescopic positioning column, and the thickness of the position detection ring is the same as the depth of the positioning groove of the first telescopic positioning column.

[0010] Furthermore, the cross-sectional dimensions of the inner side of the second telescopic positioning column and the dimensions of the bottom of the lifting limit plate are clearance-matched, a threaded hole is provided on the top of the second telescopic positioning column, the threaded hole on the top of the second telescopic positioning column and the thread on the outer side of the telescopic threaded rod cooperate with each other, and the thickness of the second bearing is the same as the thickness of the lifting limit plate.

[0011] Furthermore, the diameter of the inner side of the position detection ring is clearance-matched with the diameter of the first limiting circular plate, and the diameter of the top of the first telescopic positioning column is clearance-matched with the diameter of the telescopic rod.

[0012] Furthermore, the center of the winding column overlaps with the center of the second limiting circular plate, and the center of the second limiting circular plate is the same as the center of the electromagnetic circular plate.

[0013] The technical effects and advantages of the present invention are as follows:

[0014] 1. During operation, the present invention connects the second guide to the power distribution network to be tested, then winds the spring wire around the outside of the winding column, and then drives the positioning circular plate and the positioning pin into the ground. This completes the installation of the device, making it easy for users to quickly connect the device to the circuit and thus facilitate use.

[0015] 2. When a fault occurs in the distribution network, the present invention conducts current into the ground through the grounding component, so that current exists inside the grounding component. Then, under the electromagnetic action between the spring wire and the winding column, the winding column and the second limiting circular plate are magnetic, and the magnetic poles of the winding column and the second limiting circular plate are opposite to the magnetic poles of the electromagnetic circular plate, thereby pushing the first limiting circular plate, the telescopic rod and the electromagnetic circular plate to move downward. The connection causes the spring to be compressed, and then the height of the first limiting circular plate is monitored by the position detection ring to determine whether a fault occurs in the distribution network. Therefore, it is convenient to use to determine the usage of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the positioning component of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the electromagnetic component of the present invention;

[0019] Figure 4 Schematic diagram of the grounding assembly structure of the present invention.

[0020] The accompanying drawings are marked as follows: 1. Positioning assembly; 101. First fixed block; 102. First telescopic positioning column; 103. Spring; 104. First limiting circular plate; 105. Telescopic rod; 106. Electromagnetic circular plate; 107. Position detection ring; 2. Electromagnetic assembly; 201. Second telescopic positioning column; 202. Lifting limiting plate; 203. First bearing; 204. Telescopic threaded rod; 205. Second bearing; 206. Rotating circular plate; 207. Rotating column; 208. Fixed circular plate; 209. Winding column; 2010. Second limiting circular plate; 2011. Support positioning rod; 2012. Fixed plate; 3. Grounding assembly; 301. Spring wire; 302. First guide; 303. Second guide; 304. Third wire; 305. Fourth wire; 306. Positioning circular plate; 307. Positioning pin. DETAILED DESCRIPTION

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The intelligent detection device for grounding faults in a distribution network involved in the present invention is not limited to the various structures described in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work fall within the scope of protection of the present invention.

[0022] Reference Figures 1 to 4The present invention provides an intelligent detection device for grounding faults in a distribution network, comprising a positioning component 1, wherein an electromagnetic component 2 is fixedly connected to one side of the top of the positioning component 1, a grounding component 3 is provided on the outside of the electromagnetic component 2, the positioning component 1 comprises a first fixed block 101, a first telescopic positioning column 102 is fixedly connected to the other side of the first fixed block 101, a spring 103 is fixedly connected to the bottom of the inner side of the first telescopic positioning column 102, a first limiting circular plate 104 is fixedly connected to the top of the spring 103, a telescopic rod 105 is fixedly connected to the top of the first limiting circular plate 104, an electromagnetic circular plate 106 is fixedly connected to the top of the telescopic rod 105, and a position detection ring 107 is fixedly connected to the top of the inner side of the first telescopic positioning column 102; during operation, the second guide 303 is connected to the distribution network to be detected, and then the spring wire 301 is wound around the outer side of the winding column 209, and then the positioning circular plate 306 and the positioning pin 307 are nailed into the ground, and the installation of the device is completed, which is convenient for users to quickly connect the device to the circuit, thereby facilitating user use.

[0023] Furthermore, the electromagnetic assembly 2 includes a second telescopic positioning column 201, a lifting limit plate 202 is provided on the inner side of the second telescopic positioning column 201, a first bearing 203 is installed on the top of the lifting limit plate 202, a telescopic threaded rod 204 is installed on the inner side of the first bearing 203, a second bearing 205 is installed near the top of the outer side of the telescopic threaded rod 204, a rotating circular plate 206 is fixedly connected to the top of the telescopic threaded rod 204, a rotating column 207 is fixedly connected to the top of the rotating circular plate 206, a fixed plate 2012 is installed on the outer side of the second bearing 205, the bottom of the fixed plate 2012 is fixedly connected to the support positioning rod 2011, the other side of the fixed plate 2012 is fixedly connected to the fixed circular plate 208, and the bottom of the fixed circular plate 208 is fixedly connected to the winding column 209. A second limiting circular plate 2010 is fixedly connected to the outer side of the winding column 209; when a fault occurs in the distribution network, the current is introduced into the ground through the grounding component 3, so that current exists inside the grounding component 3, and then under the electromagnetic action between the spring wire 301 and the winding column 209, the winding column 209 and the second limiting circular plate 2010 are magnetic, and the magnetic poles of the winding column 209 and the second limiting circular plate 2010 are opposite to the magnetic poles of the electromagnetic circular plate 106, thereby pushing the first limiting circular plate 104, the telescopic rod 105 and the electromagnetic circular plate 106 to move downward, and the connection causes the spring 103 to be compressed, and then the height of the first limiting circular plate 104 is monitored by the position detection ring 107 to determine whether a fault occurs in the distribution network, which is convenient for use to determine the usage of the distribution network.

[0024] Furthermore, the grounding component 3 includes a spring wire 301, the top of the spring wire 301 is fixedly connected to a first guide 302, the end of the first guide 302 away from the spring wire 301 is fixedly connected to a second guide 303, the bottom of the spring wire 301 is fixedly connected to a third wire 304, the end of the third wire 304 away from the spring wire 301 is fixedly connected to a fourth wire 305, the bottom of the fourth wire 305 is fixedly connected to a positioning circular plate 306, and the bottom of the positioning circular plate 306 is fixedly connected to a positioning pin 307.

[0025] Furthermore, a positioning groove is provided at the top of the inner side of the first telescopic positioning column 102, and the inner diameter of the position detection ring 107 is clearance-matched with the inner diameter of the first telescopic positioning column 102, and the thickness of the position detection ring 107 is the same as the depth of the positioning groove of the first telescopic positioning column 102.

[0026] Furthermore, the cross-sectional dimensions of the inner side of the second telescopic positioning column 201 and the dimensions of the bottom of the lifting limit plate 202 are clearance-matched, a threaded hole is provided at the top of the second telescopic positioning column 201, and the threaded hole at the top of the second telescopic positioning column 201 cooperates with the thread on the outer side of the telescopic threaded rod 204, and the thickness of the second bearing 205 is the same as the thickness of the lifting limit plate 202.

[0027] Furthermore, the inner diameter of the position detection ring 107 and the diameter of the first limiting circular plate 104 are clearance-matched, and the top diameter of the first telescopic positioning column 102 and the diameter of the telescopic rod 105 are clearance-matched.

[0028] Furthermore, the center of the winding column 209 overlaps with the center of the second limiting circular plate 2010 , and the center of the second limiting circular plate 2010 is the same as the center of the electromagnetic circular plate 106 .

[0029] The working principle of the present invention is as follows: during operation, the second guide 303 is connected to the power distribution network to be tested, the spring wire 301 is wound around the outside of the winding column 209, and the positioning circular plate 306 and the positioning pin 307 are nailed into the ground. The device is then installed, making it easy for the user to quickly connect the device to the circuit and thus convenient for the user to use.

[0030] When a fault occurs in the distribution network, the current is introduced into the ground through the grounding component 3, so that there is current inside the grounding component 3. Then, under the electromagnetic action between the spring wire 301 and the winding column 209, the winding column 209 and the second limiting circular plate 2010 are magnetic, and the magnetic poles of the winding column 209 and the second limiting circular plate 2010 are opposite to the magnetic poles of the electromagnetic circular plate 106, thereby pushing the first limiting circular plate 104, the telescopic rod 105 and the electromagnetic circular plate 106 to move downward, and the spring 103 is compressed. Then, the height of the first limiting circular plate 104 is monitored by the position detection ring 107 to determine whether a fault occurs in the distribution network. Therefore, it is convenient to use to determine the usage of the distribution network.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0032] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent detection device for ground faults in a distribution network, comprising a positioning component (1), characterized in that: One side of the top of the positioning component (1) is fixedly connected to an electromagnetic component (2), and a grounding component (3) is provided on the outside of the electromagnetic component (2). The positioning component (1) comprises a first fixed block (101), the other side of the first fixed block (101) is fixedly connected to a first telescopic positioning column (102), the bottom of the inner side of the first telescopic positioning column (102) is fixedly connected to a spring (103), the top of the spring (103) is fixedly connected to a first limiting circular plate (104), the top of the first limiting circular plate (104) is fixedly connected to a telescopic rod (105), the top of the telescopic rod (105) is fixedly connected to an electromagnetic circular plate (106), and the top of the inner side of the first telescopic positioning column (102) is fixedly connected to a position detection ring (107).

2. The intelligent detection device for ground fault in a distribution network according to claim 1, characterized in that: The electromagnetic assembly (2) comprises a second telescopic positioning column (201), a lifting limit plate (202) is provided on the inner side of the second telescopic positioning column (201), a first bearing (203) is installed on the top of the lifting limit plate (202), a telescopic threaded rod (204) is installed on the inner side of the first bearing (203), a second bearing (205) is installed on the outer side of the telescopic threaded rod (204) near the top, and a rotating circular plate (206) is fixedly connected to the top of the telescopic threaded rod (204). The top of the rotating circular plate (206) is fixedly connected to a rotating column (207), the outer side of the second bearing (205) is installed with a fixed plate (2012), the bottom of the fixed plate (2012) is fixedly connected to a supporting positioning rod (2011), the other side of the fixed plate (2012) is fixedly connected to a fixed circular plate (208), the bottom of the fixed circular plate (208) is fixedly connected to a winding column (209), and the outer side of the winding column (209) is fixedly connected to a second limiting circular plate (2010).

3. The intelligent detection device for ground fault in a distribution network according to claim 2, characterized in that: The grounding assembly (3) comprises a spring wire (301), the top of the spring wire (301) is fixedly connected to a first guide (302), one end of the first guide (302) away from the spring wire (301) is fixedly connected to a second guide (303), the bottom of the spring wire (301) is fixedly connected to a third wire (304), one end of the third wire (304) away from the spring wire (301) is fixedly connected to a fourth wire (305), the bottom of the fourth wire (305) is fixedly connected to a positioning circular plate (306), and the bottom of the positioning circular plate (306) is fixedly connected to a positioning pin (307).

4. The intelligent detection device for ground fault in a distribution network according to claim 3, characterized in that: A positioning groove is provided at the top of the inner side of the first telescopic positioning column (102); the inner diameter of the position detection ring (107) is clearance-matched with the inner diameter of the first telescopic positioning column (102); and the thickness of the position detection ring (107) is the same as the depth of the positioning groove of the first telescopic positioning column (102).

5. The intelligent detection device for ground fault in a distribution network according to claim 3, characterized in that: The cross-sectional dimensions of the inner side of the second telescopic positioning column (201) and the dimensions of the bottom of the lifting limit plate (202) are clearance-matched. A threaded hole is provided on the top of the second telescopic positioning column (201). The threaded hole on the top of the second telescopic positioning column (201) and the thread on the outer side of the telescopic threaded rod (204) cooperate with each other. The thickness of the second bearing (205) is the same as the thickness of the lifting limit plate (202).

6. The intelligent detection device for ground fault in a distribution network according to claim 3, characterized in that: The inner diameter of the position detection ring (107) and the diameter of the first limiting circular plate (104) are clearance-matched, and the top diameter of the first telescopic positioning column (102) and the diameter of the telescopic rod (105) are clearance-matched.

7. The intelligent detection device for ground fault in a distribution network according to claim 3, characterized in that: The center of the winding column (209) overlaps with the center of the second limiting circular plate (2010), and the center of the second limiting circular plate (2010) is the same as the center of the electromagnetic circular plate (106).

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