CN115586464A - Device and method for determining installation state of grounding wire - Google Patents
Device and method for determining installation state of grounding wire Download PDFInfo
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- CN115586464A CN115586464A CN202211252329.8A CN202211252329A CN115586464A CN 115586464 A CN115586464 A CN 115586464A CN 202211252329 A CN202211252329 A CN 202211252329A CN 115586464 A CN115586464 A CN 115586464A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
- G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention discloses a device and a method for determining the installation state of a grounding wire, wherein the device comprises: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value. According to the technical scheme, the detection part determines the contact resistance value according to the current value provided by the direct-current power supply and the voltage value detected by the voltage detector, and determines whether the installation state of the grounding wire is qualified or unqualified according to whether the contact resistance value is within the preset range, so that the safety of power production is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of power electronics, in particular to a device and a method for determining the installation state of a grounding wire.
Background
In the process of power production, the hanging connection of the ground wire on the lead is an extremely important link, however, in the actual working process, the ground wire seems to be hung and locked, but the virtual connection between the ground wire and the lead is caused due to the problems of corrosion on the surface of the ground wire, deformation of metal of the hook, too little contact surface with the lead during locking and the like. The virtual connection between the grounding wire and the lead leads to extremely large contact resistance between the grounding wire and the lead, and even can be regarded as an open circuit to a certain extent. If there is the reverse power transmission in the wire at this moment, will lead to the electric current can't lead to the ground from the earth connection, otherwise can get into in staff's the working line for there is very big potential safety hazard in the electric power production. Therefore, the installation state of the grounding wire is a matter of urgent concern.
Disclosure of Invention
The invention provides a device and a method for determining the installation state of a grounding wire, which are used for determining the installation state of the grounding wire and improving the safety of power production.
In a first aspect, an embodiment of the present invention provides a ground wire installation state determining apparatus, including: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value.
The technical solution of the embodiment of the present invention provides a device for determining an installation state of a ground wire, including: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value. According to the technical scheme, the ground wire installation state determining device clamps the conducting wire connected with the ground wire on the basis of the first metal part and the second metal part of the clamping part, so that the conducting wire, the first metal part, the second metal part and the direct-current power supply form an electric loop, the voltage detector can detect the voltage values of the conducting wire, the first metal part and the second metal part, after the voltage value detected by the voltage detector is obtained by the detecting part, the loop resistance value can be determined according to the current value provided by the built-in direct-current power supply and the voltage value detected by the voltage detector, and the contact resistance value is determined according to the loop resistance value and the metal resistance value formed by the built-in upper end metal part and the built-in lower end metal part.
Further, the device also comprises a connecting part, and the clamping part is connected with the detection part through the connecting part.
Further, one end of the insulating portion is connected to the first end of the first metal portion, the other end of the insulating portion is connected to the first end of the second metal portion, and the clamping portion clamps the wire connected to the ground wire through the second end of the first metal portion and the second end of the second metal portion.
Further, the direct current power supply and the voltage detector are electrically connected to the first end of the first metal part and the first end of the second metal part.
Further, when the clamping portion clamps a wire connected to a ground wire by the first metal portion and the second metal portion, the first metal portion, the second metal portion, the wire, and the dc power supply form an electric circuit.
Further, the detection section is configured to: determining a loop resistance value according to the current value and the voltage value, and determining the contact resistance value according to the loop resistance value and the metal resistance value; determining whether the contact resistance value is within a preset range; and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
Further, the detection section includes an alarm device, and the detection section is configured to: and when the installation state of the grounding wire is determined to be unqualified, giving an alarm based on the alarm device.
In a second aspect, an embodiment of the present invention further provides a ground wire installation state determination method applied to the detection portion of the ground wire installation state determination apparatus according to any one of the first aspect, including:
acquiring a voltage value detected by a voltage detector;
determining the contact resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector;
and determining the installation state of the grounding wire according to the contact resistance value.
Further, determining the contact resistance value according to a current value supplied by the dc power supply and a voltage value detected by the voltage detector includes:
determining a loop resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector;
and determining the contact resistance value according to the difference value of the loop resistance value and the metal resistance value.
Further, determining the installation state of the grounding wire according to the contact resistance value includes:
determining whether the contact resistance value is within a preset range;
and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
These and other aspects of the present application will be more readily apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a ground wire installation state determining apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another grounding wire installation state determining apparatus according to an embodiment of the present invention;
fig. 3 is an equivalent circuit diagram of an electrical circuit formed when the grounding wire installation state determining apparatus clamps a wire connected to the grounding wire based on the second end of the first metal portion and the second end of the second metal portion of the clamping portion according to another embodiment of the present invention;
fig. 4 is a flowchart of a method for determining a ground wire installation state according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The terms "first" and "second" and the like in the description and drawings of the present application are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of the objects.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
Fig. 1 is a schematic structural diagram of a ground wire installation state determining device according to an embodiment of the present invention, and as shown in fig. 1, the ground wire installation state determining device includes: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value.
Wherein the first metal part may be an upper end metal member, and the second metal part may be a lower end metal member.
The insulating part is internally provided with a direct current power supply and a voltage detector, one end of the insulating part is connected with one end of the upper end metal component, the other end of the insulating part is connected with one end of the lower end metal component, the direct current power supply is electrically connected with the upper end metal component and the lower end metal component and is connected with the upper end metal component and the lower end metal component in series, and the voltage detector is connected with the direct current power supply in parallel.
When the installation state of the grounding wire needs to be determined, the ends of the upper metal component and the lower metal component far away from the insulating part can be opened so as to clamp the conducting wire connected with the grounding wire based on the clamping part of the grounding wire installation state determination device. After the switch button of the detection part is started, the direct current power supply is started, and further, the direct current power supply built in the lead, the upper end metal part, the lower end metal part and the insulation part forms an electric loop, at the moment, the direct current power supply is connected in parallel at two ends of the direct current power supply, and meanwhile, voltage detectors connected in parallel at two ends of the lead, the upper end metal part and the lower end metal part can determine voltage values among the lead, the upper end metal part and the lower end metal part.
The detection part can obtain the voltage value detected by the voltage detector, and the detection part is internally provided with a current value provided by a direct current power supply and a metal resistance value formed by the upper end metal part and the lower end metal part. Therefore, the detection portion can determine the loop resistance value after acquiring the voltage value detected by the voltage detector, and can further determine the contact resistance value according to the loop resistance value and the metal resistance value.
Since the contact resistance is generally m Ω magnitude, if the ground wire is not properly installed, i.e., the ground wire and the conductive wire are connected in a virtual manner, the contact resistance increases dramatically. Therefore, the detection portion can determine whether the contact resistance value is in the order of m Ω after determining the contact resistance value; and if the contact resistance value is in the magnitude of m omega, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
The grounding wire installation state determining device provided by the embodiment of the invention comprises: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value. According to the technical scheme, the ground wire installation state determining device clamps the wire connected with the ground wire based on the first metal part and the second metal part of the clamping part, so that the wire, the first metal part, the second metal part and the direct-current power supply form an electric loop, the voltage detector can detect the voltage values of the wire, the first metal part and the second metal part, after the voltage value detected by the voltage detector is obtained, the loop resistance value can be determined according to the current value provided by the built-in direct-current power supply and the voltage value detected by the voltage detector, and the contact resistance value is determined according to the loop resistance value and the metal resistance value formed by the built-in upper end metal part and the built-in lower end metal part, in addition, when the ground wire is installed in a qualified mode, the contact resistance value is in a preset range, therefore, whether the contact resistance value is in the preset range can be determined, whether the installation state of the ground wire is qualified or unqualified is determined according to whether the contact resistance value is in the preset range, and safety of power production is improved.
Fig. 2 is a schematic structural diagram of another grounding wire installation state determining apparatus according to an embodiment of the present invention, which is embodied on the basis of the foregoing embodiment. As shown in fig. 2, in this embodiment, the apparatus may further include: a clamping part, a connecting part and a detection part; the clamping part is connected with the detection part through a lead in the connecting part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first end of the first metal part, the other end of the insulating part is connected with the first end of the second metal part, a direct-current power supply and a voltage detector are arranged in the insulating part, and the direct-current power supply and the voltage detector are electrically connected with the first end of the first metal part and the first end of the second metal part; when the clamping part clamps a lead connected with a grounding wire through the second end of the first metal part and the second end of the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value.
Wherein, the connecting part can be an insulating rod, and a lead is arranged in the insulating rod.
One end of the insulating part is connected with the first end of the upper end metal component, the other end of the insulating part is connected with the first end of the lower end metal component, the direct current power supply is electrically connected with the first end of the upper end metal component and the first end of the lower end metal component and is connected with the upper end metal component and the lower end metal component in series, and the voltage detector is connected with the direct current power supply in parallel.
When the installation state of the grounding wire needs to be determined, the second ends of the upper end metal part and the lower end metal part can be opened so as to clamp the conducting wire connected with the grounding wire based on the clamping part of the grounding wire installation state determination device.
In one embodiment, when the clamping portion clamps a lead wire connected to a ground wire by the first metal portion and the second metal portion, the first metal portion, the second metal portion, the lead wire, and the dc power supply form an electric circuit.
Fig. 3 is an equivalent circuit diagram of an electrical circuit formed by the grounding wire installation state determining apparatus according to another embodiment of the present invention when the second end of the first metal portion and the second end of the second metal portion of the clamping portion clamp the conducting wire connected to the grounding wire, as shown in fig. 3, the dc power source is used for supplying power to the electrical circuit, the voltage detector is used for determining the voltage values among the first metal portion, the second metal portion and the conducting wire, and R1 and R2 together form a metal resistance value.
In one embodiment, the detection section is configured to: determining a loop resistance value according to the current value and the voltage value, and determining the contact resistance value according to the loop resistance value and the metal resistance value; determining whether the contact resistance value is within a preset range; and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
The detection part can obtain the voltage value detected by the voltage detector, and the detection part is internally provided with a current value provided by a direct current power supply and a metal resistance value formed by the upper end metal part and the lower end metal part. Therefore, the detection section can determine the loop resistance after acquiring the voltage value detected by the voltage detector
Wherein R is g Indicating the loop resistance, U indicating the voltage detected by the voltage detectorThe value, I, represents the value of the current supplied by the dc power supply. Further, the contact resistance value R can be determined j ＝R g -R d Wherein R is j Represents a contact resistance value, R d The resistance value of the metal is expressed.
Because the contact resistance is generally m Ω magnitude, if the installation state of the grounding wire is not qualified, i.e. the grounding wire and the conducting wire are in virtual connection, the contact resistance is suddenly increased and exceeds 1000m Ω. Therefore, the detection portion determines the contact resistance value R j Thereafter, the contact resistance value R can be determined j Whether less than 1000m Ω; if R is j If the current value is less than 1000m omega, the installation state of the grounding wire is determined to be qualified, otherwise, the installation state of the grounding wire is determined to be unqualified.
In one embodiment, the detection portion comprises an alarm device, the detection portion being configured to: and when the installation state of the grounding wire is determined to be unqualified, alarming is carried out based on the alarming device.
When the detection part determines that the installation state of the grounding wire is unqualified, the detection part can start the alarm device and give an alarm based on the alarm device so as to remind workers.
In addition, be provided with the safety ring in the middle of connecting portion and the detection portion to the protection staff further promotes power production's security.
The grounding wire installation state determining device provided by the embodiment of the invention comprises: a clamping part, a connecting part and a detecting part; the clamping part is connected with the detection part through a lead in the connecting part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first end of the first metal part, the other end of the insulating part is connected with the first end of the second metal part, a direct-current power supply and a voltage detector are arranged in the insulating part, and the direct-current power supply and the voltage detector are electrically connected with the first end of the first metal part and the first end of the second metal part; when the clamping part clamps a lead connected with a grounding wire through the second end of the first metal part and the second end of the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value. According to the technical scheme, the ground wire installation state determining device clamps the conducting wire connected with the ground wire based on the second end of the first metal part and the second end of the second metal part of the clamping part, so that the conducting wire, the first metal part, the second metal part and the direct-current power supply form an electric loop, the voltage detector can detect the voltage values of the conducting wire, the first metal part and the second metal part, the detection part can determine the resistance value of the loop according to the current value provided by the built-in direct-current power supply and the voltage value detected by the voltage detector after acquiring the voltage value detected by the voltage detector, and determine the contact resistance value according to the resistance value of the loop and the metal resistance values formed by the built-in upper end metal component and the built-in lower end metal component, in addition, when the installation state of the ground wire is qualified, the contact resistance value is within a preset range, therefore, whether the contact resistance value is within the preset range can be determined, and whether the installation state of the ground wire is qualified or unqualified according to whether the contact resistance value is within the preset range. The detection part can start the alarm device when determining that the installation state of the grounding wire is unqualified, and gives an alarm based on the alarm device to remind workers, so that the safety of power production is improved.
Fig. 4 is a flowchart of a method for determining a mounting state of a ground wire according to an embodiment of the present invention, which is applied to a detection portion of any one of the ground wire mounting state determination devices described above. As shown in fig. 3, the method may include:
and step 410, acquiring a voltage value detected by the voltage detector.
Specifically, the detection section may acquire a voltage value between the first metal portion, the second metal portion, and the wire detected by the voltage detector.
And step 420, determining the contact resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector.
In an embodiment, step 420 may specifically include:
determining a loop resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector; and determining the contact resistance value according to the difference value of the loop resistance value and the metal resistance value.
Specifically, the detection portion may determine the loop resistance
The contact resistance value R can be determined j ＝R g -R d As previously described, R g Indicating loop resistance, U indicating voltage value detected by voltage detector, I indicating current value provided by DC power supply, and R j Represents a contact resistance value, R d The resistance value of the metal is expressed.
And step 430, determining the installation state of the grounding wire according to the contact resistance value.
In one embodiment, step 430 may specifically include:
determining whether the contact resistance value is within a preset range; and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
Specifically, if R is j If the current value is less than 1000m omega, the installation state of the grounding wire is determined to be qualified, otherwise, the installation state of the grounding wire is determined to be unqualified.
And step 440, when the installation state of the grounding wire is unqualified, giving an alarm based on an alarm device.
Specifically, the detection portion may start the warning device when determining that the installation state of the ground wire is not qualified, and perform warning based on the warning device to remind a worker.
The method for determining the installation state of the grounding wire provided by the embodiment of the invention comprises the following steps: acquiring a voltage value detected by a voltage detector; determining a loop resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector; determining a contact resistance value according to the difference value of the loop resistance value and the metal resistance value; determining whether the contact resistance value is within a preset range; if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified; and when the installation state of the grounding wire is unqualified, alarming is carried out based on the alarming device. According to the technical scheme, after the voltage value detected by the voltage detector is acquired by the detection part, the loop resistance value can be determined according to the current value provided by the direct-current power supply and the voltage value detected by the voltage detector, and the contact resistance value is determined according to the loop resistance value and the metal resistance value.
In addition, the technical scheme of the invention conforms to the relevant regulations of national laws and regulations in terms of data acquisition, storage, use, processing and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. An earth wire installation state determining apparatus, comprising: a clamping part and a detection part; the clamping part comprises a first metal part, a second metal part and an insulating part, one end of the insulating part is connected with the first metal part, the other end of the insulating part is connected with the second metal part, and a direct-current power supply and a voltage detector are arranged in the insulating part; when the clamping part clamps a lead connected with a grounding wire through the first metal part and the second metal part, the detection part is used for acquiring a voltage value detected by the voltage detector, determining a contact resistance value according to the voltage value and a current value provided by the direct-current power supply, and determining the installation state of the grounding wire according to the contact resistance value.
2. The grounding-wire installation-state determining device according to claim 1, further comprising a connecting portion through which the clamping portion is connected to the detecting portion.
3. The ground wire installation state determining device according to claim 1, wherein one end of the insulating portion is connected to a first end of the first metal portion, the other end is connected to a first end of the second metal portion, and the clamping portion clamps the wire connected to the ground wire through a second end of the first metal portion and a second end of the second metal portion.
4. The ground wire installation state determining device according to claim 3, wherein the direct-current power supply and the voltage detector are each electrically connected to the first end of the first metal portion and the first end of the second metal portion.
5. The ground wire installation state determining device according to claim 1, wherein when the clamping portion clamps the wire connected to the ground wire by the first metal portion and the second metal portion, the first metal portion, the second metal portion, the wire, and the dc power supply constitute an electric circuit.
6. The ground wire installation state determination device according to claim 1, wherein the detection portion is configured to: determining a loop resistance value according to the current value and the voltage value, and determining the contact resistance value according to the loop resistance value and the metal resistance value; determining whether the contact resistance value is within a preset range; and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
7. The ground wire installation state determination device according to claim 1, characterized in that the detection portion includes an alarm device, the detection portion being configured to: and when the installation state of the grounding wire is determined to be unqualified, alarming is carried out based on the alarming device.
8. A ground wire mounting state determining method applied to a detecting portion of the ground wire mounting state determining apparatus according to any one of claims 1 to 7, comprising:
acquiring a voltage value detected by a voltage detector;
determining a contact resistance value according to a current value supplied by a direct current power supply and a voltage value detected by the voltage detector;
and determining the installation state of the grounding wire according to the contact resistance value.
9. The ground wire installation state determining method according to claim 8, wherein determining the contact resistance value based on the current value supplied from the dc power supply and the voltage value detected by the voltage detector includes:
determining a loop resistance value according to the current value supplied by the direct current power supply and the voltage value detected by the voltage detector;
and determining the contact resistance value according to the difference value of the loop resistance value and the metal resistance value.
10. The ground wire mounting state determining method according to claim 8, wherein determining the mounting state of the ground wire based on the contact resistance value includes:
determining whether the contact resistance value is within a preset range;
and if the contact resistance value is within a preset range, determining that the installation state of the grounding wire is qualified, otherwise, determining that the installation state of the grounding wire is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211252329.8A CN115586464A (en) | 2022-10-13 | 2022-10-13 | Device and method for determining installation state of grounding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211252329.8A CN115586464A (en) | 2022-10-13 | 2022-10-13 | Device and method for determining installation state of grounding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115586464A true CN115586464A (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211252329.8A Pending CN115586464A (en) | 2022-10-13 | 2022-10-13 | Device and method for determining installation state of grounding wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115586464A (en) |
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2022
- 2022-10-13 CN CN202211252329.8A patent/CN115586464A/en active Pending
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