Grounding electrode structure for measuring grounding resistance without power outage

Abstract

The utility model relates to a grounding electrode structure for measuring grounding resistance without power cut, and belongs to the technical field of power supply line and equipment grounding. According to the technical scheme, a grounding electrode connecting plate (18) and a transition grounding plate (19) are detachably connected; a JP cabinet shell ground wire connection point (7), a transformer shell ground point (8), a transformer neutral point ground wire connection point (9) and a lightning arrester ground lead connection point (10) are respectively connected with a JP cabinet (22), a transformer shell (21), a transformer neutral point and a lightning arrester (20) through a JP cabinet shell ground lead (5), a transformer shell ground lead (4), a transformer neutral point ground lead (3) and a lightning arrester ground lead (2). The temporary grounding lead connection point is connected with a temporary grounding drill rod through a temporary grounding lead. The grounding resistance measuring device is simple in structure and convenient to operate, and realizes grounding resistance measurement without power failure under the condition that line equipment does not lose grounding protection.

Description

Technical Field

[0001] The utility model relates to a grounding electrode structure for measuring grounding resistance without power failure, belonging to the technical field of power supply lines and equipment grounding. Background Art

[0002] In the grounding protection system of the power system, the working grounding, lightning protection grounding, and protective grounding of the lines and equipment are all connected to a grounding electrode device and connected to the earth. During the operation and maintenance of the grounding resistance measurement process, the grounding electrode needs to be disconnected from the grounding lead. At this time, both the working grounding and the protective grounding lose the grounding protection function. When the three-phase load of the transformer is unbalanced, the neutral point will be energized. If the grounding electrode lead is removed, the user's three-phase voltage will be abnormal and burn the equipment. The removed grounding lead is easy to be energized and cause accidental electric shock accidents; when the insulation of the equipment is damaged, the equipment casing will be energized. At this time, the removed grounding lead is easy to be energized and cause accidental electric shock accidents. Therefore, the grounding resistance measurement process needs to be carried out after the line and equipment are powered off, but it will affect the user's continuous and stable power supply, and increase the workload and safety risks of the measurement work. Utility Model Content

[0003] The utility model aims to provide a grounding electrode structure for measuring grounding resistance without power outage, so as to achieve grounding resistance measurement of line equipment without power outage without losing grounding protection, and solve the above problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A grounding electrode structure for measuring grounding resistance without power outage comprises a grounding electrode connecting plate and a transition grounding plate installed on an electric pole, wherein the grounding electrode connecting plate and the transition grounding plate are detachably connected, the grounding electrode connecting plate is connected to a grounding body through a grounding electrode lead-down flat iron, and the grounding body is arranged in the ground; a JP cabinet shell grounding wire connection point, a transformer shell grounding point, a transformer neutral point grounding wire connection point, a lightning arrester grounding lead connection point and a temporary grounding lead connection point are arranged on the transition grounding plate, and the JP cabinet shell grounding wire connection point, the transformer shell grounding point, the transformer neutral point grounding wire connection point and the lightning arrester grounding lead connection point are respectively connected to the JP cabinet, the transformer shell, the transformer neutral point and the lightning arrester through the JP cabinet shell grounding lead, the transformer shell grounding lead, the transformer neutral point grounding lead and the lightning arrester grounding lead; the temporary grounding lead connection point is connected to a temporary grounding soldering rod through a temporary grounding lead, and the temporary grounding soldering rod is inserted into the ground.

[0006] Furthermore, a grounding angle iron is provided at the edge of the grounding body, and the grounding angle iron is fixed by bolts.

[0007] Furthermore, the transition grounding plate and the grounding electrode connecting plate are arranged up and down, and are connected by bolts; the bottom of the grounding electrode connecting plate is fixedly connected to the grounding electrode lead-down flat iron.

[0008] Furthermore, the temporary grounding lead connection point, the JP cabinet shell grounding lead connection point, the transformer shell grounding point, the transformer neutral point grounding lead connection point and the arrester grounding lead connection point are arranged in sequence from top to bottom.

[0009] Furthermore, the grounding electrode connecting plate and the transition grounding plate are both hot-dip galvanized flat iron.

[0010] Furthermore, both ends of the temporary grounding lead are provided with grounding terminals, one grounding terminal is connected to the temporary grounding lead connection point, and the other grounding terminal is connected to the temporary grounding soldering iron.

[0011] The positive effects of the utility model are as follows: the structure is simple and the operation is convenient. The grounding resistance measurement of the line equipment is realized without power outage when the grounding protection is not lost. The workload of the measuring staff is reduced, the risk of electric shock safety during work is reduced, and the work efficiency is improved. At the same time, the number and duration of power outages are reduced, the power supply quality and reliability are improved, the safe and stable operation of the equipment is ensured, and the user satisfaction is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0014] In the figure: electric pole 1, lightning arrester grounding lead 2, transformer neutral point grounding lead 3, transformer casing grounding lead 4, JP cabinet casing grounding lead 5, temporary grounding lead 6, JP cabinet casing grounding wire connection point 7, transformer casing grounding point 8, transformer neutral point grounding wire connection point 9, lightning arrester grounding lead connection point 10, temporary grounding lead connection point 11, temporary grounding solder 12, connection point one 13, connection point two 14, grounding electrode lead-down flat iron 15, grounding body 16, grounding body angle iron 17, grounding electrode connecting plate 18, transition grounding plate 19, lightning arrester 20, transformer 21, JP cabinet 22. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Refer to the attached Figure 1 and 2The present embodiment provides a grounding electrode structure for measuring grounding resistance without power outage, comprising a grounding electrode connecting plate 18 and a transition grounding plate 19 installed on a pole 1, wherein the grounding electrode connecting plate 18 and the transition grounding plate 19 are detachably connected, the grounding electrode connecting plate 18 is connected to a grounding body 16 through a grounding electrode down lead flat iron 15, and the grounding body 16 is arranged in the ground; the transition grounding plate 19 is provided with a JP cabinet shell grounding wire connection point 7, a transformer shell grounding point 8, a transformer neutral point grounding wire connection point 9, a lightning arrester grounding lead connection point 10 and a temporary grounding lead The connection point 11, the JP cabinet shell grounding wire connection point 7, the transformer shell grounding point 8, the transformer neutral point grounding wire connection point 9 and the lightning arrester grounding lead connection point 10 are respectively connected to the JP cabinet 22, the transformer shell 21, the transformer neutral point and the lightning arrester 20 through the JP cabinet shell grounding lead 5, the transformer shell grounding lead 4, the transformer neutral point grounding lead 3 and the lightning arrester grounding lead 2; the temporary grounding lead connection point 11 is connected to the temporary grounding brazing rod 12 through the temporary grounding lead 6, and the temporary grounding brazing rod 12 is inserted into the ground.

[0017] In this embodiment, the transition grounding plate 19 is a hot-dip galvanized flat iron with a specification of 40*4 and a length of 25 cm. It has 7 holes with a diameter of 14 mm and a spacing of 3 cm between adjacent holes. From top to bottom, they are respectively the temporary grounding lead connection point 11, the JP cabinet shell grounding wire connection point 7, the transformer shell grounding point 8, the transformer neutral point grounding wire connection point 9, the lightning arrester grounding lead connection point 10, connection point one 13 and connection point two 14.

[0018] Preferably, the grounding electrode connecting plate 18 is a hot-dip galvanized flat iron with a specification of 40*4, and the grounding electrode connecting plate 18 is welded to the grounding flat iron. Two holes with a diameter of 14 mm are punched on the grounding electrode connecting plate 18, corresponding to the connection point 1 13 and the connection point 2 14 on the transition grounding plate, respectively, and the connection point 1 13 and the connection point 2 14 are fixed to the corresponding holes by respective bolts.

[0019] Preferably, the grounding electrode connecting plate 18 is not painted, and the grounding electrode lower flat iron 15 is painted with yellow and green paints at intervals of 20 cm.

[0020] Preferably, the grounding body 16 is buried in the ground to a depth of 0.6 meters, and a grounding angle iron 17 is welded on each corner of the grounding body 16 .

[0021] Preferably, the temporary grounding lead 6 is a 25 square multi-strand soft copper wire with a soft plastic insulating sleeve as the outer sheath, and grounding terminals are installed at both ends, one of which is connected to the temporary grounding lead connection point 11, and the other grounding terminal is connected to the temporary grounding soldering iron 12.

[0022] Preferably, the grounding brazing rod 12 is a galvanized round steel with a diameter of 20 mm and a length of 80 cm, one end of which is welded with a connecting plate connected to the grounding terminal of the grounding lead 6, and the other end is polished into a pointed cone shape.

[0023] When measuring the grounding resistance, first insert the temporary grounding soldering iron 12 into the ground, connect the grounding terminal on the temporary grounding wire 6 to the temporary grounding lead connection point 11 on the transition plate 19, and then remove the bolts on the connection point 13 and the connection point 2 14 on the transition grounding plate 19 to separate the grounding electrode connection transition plate 19 from the grounding electrode connection plate 18. The grounding resistance can then be measured on the grounding electrode connection plate 18, thereby enabling the line equipment to perform grounding resistance measurement without losing grounding protection and without power outage.

Claims

1. A grounding electrode structure for measuring grounding resistance without power outage, characterized in that: The invention comprises a grounding electrode connection plate (18) and a transition grounding plate (19) installed on an electric pole (1), wherein the grounding electrode connection plate (18) and the transition grounding plate (19) are detachably connected, the grounding electrode connection plate (18) is connected to a grounding body (16) through a grounding electrode lead-down flat iron (15), and the grounding body (16) is arranged in the ground; the transition grounding plate (19) is provided with a JP cabinet shell grounding wire connection point (7), a transformer shell grounding point (8), a transformer neutral point grounding wire connection point (9), a lightning arrester grounding lead connection point (10) and a temporary grounding lead connection point (11), and the JP cabinet shell grounding point (15) is connected to the grounding body (16) through a grounding electrode lead-down flat iron (15). The grounding wire connection point (7), the transformer casing grounding point (8), the transformer neutral point grounding wire connection point (9) and the arrester grounding lead connection point (10) are respectively connected to the JP cabinet (22), the transformer casing (21), the transformer neutral point and the arrester (20) via the JP cabinet casing grounding lead (5), the transformer casing grounding lead (4), the transformer neutral point grounding lead (3) and the arrester grounding lead (2); the temporary grounding lead connection point (11) is connected to the temporary grounding brazing rod (12) via the temporary grounding lead (6), and the temporary grounding brazing rod (12) is inserted into the ground.

2. The grounding electrode structure for measuring grounding resistance without power outage according to claim 1, characterized in that: A grounding body angle iron (17) is provided at the edge of the grounding body (16), and the grounding body angle iron (17) is fixed by bolts.

3. A grounding electrode structure for measuring grounding resistance without power outage according to claim 1 or 2, characterized in that: The transition grounding plate (19) and the grounding electrode connecting plate (18) are arranged one above the other and are connected via bolts; the bottom of the grounding electrode connecting plate (18) is fixedly connected to the grounding electrode down-lead flat iron (15).

4. A grounding electrode structure for measuring grounding resistance without power outage according to claim 1 or 2, characterized in that: The temporary grounding lead connection point (11), the JP cabinet shell grounding lead connection point (7), the transformer shell grounding point (8), the transformer neutral point grounding lead connection point (9) and the arrester grounding lead connection point (10) are arranged in sequence from top to bottom.

5. A grounding electrode structure for measuring grounding resistance without power outage according to claim 1 or 2, characterized in that: The grounding electrode connecting plate (18) and the transition grounding plate (19) are both made of hot-dip galvanized flat iron.

6. A grounding electrode structure for measuring grounding resistance without power outage according to claim 1 or 2, characterized in that: Both ends of the temporary grounding lead (6) are provided with grounding terminals, one grounding terminal is connected to the temporary grounding lead connection point (11), and the other grounding terminal is connected to the temporary grounding soldering iron (12).

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