CN115754604A - Grounding reliability judgment method and device based on charge loss - Google Patents
Grounding reliability judgment method and device based on charge loss Download PDFInfo
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Abstract
The invention relates to a grounding reliability judgment method and a grounding reliability judgment device based on charge loss, and the technical scheme is as follows: the method comprises the following steps: generating a unipolar charge, introducing the unipolar charge into a grounding device; grounding the grounding device after the introduction of the single-polarity charges; measuring the grounding current and the potential difference generated by the single charges in the moving process; obtaining a grounding resistor according to the grounding current and a preset potential difference; judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; if the grounding resistance is out of the range of the preset threshold value, the grounding is judged to be unreliable; this application has the advantage that conveniently judges the ground connection reliability.
Description
Technical Field
The invention relates to the technical field of electrical engineering, in particular to a grounding reliability judging method and device based on charge loss.
Background
The existing grounding grid is buried underground in advance and is a whole, so the grounding grid is reliable, the grounding copper column is connected later according to the production condition, and needs to be welded to the grounding grid when being connected, and therefore, the grounding point has the problem that the grounding resistance is possibly increased and is unreliable after long-time corrosion, insufficient welding and the like of the grounding point under the ground.
The existing method for testing the connection reliability of the grounding wire mainly adopts a grounding resistance detector, the grounding wire is manually tested, current needs to be manually loaded, and the method is difficult in field wiring, high in cost, time-consuming and large in measurement error.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide a method and an apparatus for determining grounding reliability based on charge loss, which have the advantage of conveniently determining grounding reliability.
The technical purpose of the invention is realized by the following technical scheme: a grounding reliability judgment method based on charge loss comprises the following steps:
generating a unipolar charge, introducing the unipolar charge into a grounding device;
grounding the grounding device after the introduction of the single-polarity charges;
measuring the grounding current and the potential difference generated by the single charges in the moving process;
obtaining a grounding resistor according to the grounding current and a preset potential difference;
judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
Optionally, the generating the unipolar charge and introducing the unipolar charge into the grounding device include:
positive charges or negative charges in the power supply circuit are separated through the unipolar capacitor to obtain unipolar charges;
leading the single-polarity charge into a power supply end of the grounding device for storage;
monitoring the power supply terminal potential of the grounding device;
judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
Optionally, the grounding device after the introduction of the unipolar charge is grounded, including:
connecting a discharge end of the grounding device to a grounding wire;
and controlling the power supply end of the grounding device after the introduction of the unipolar charge to be conducted with the discharge end of the grounding device.
Optionally, the measuring the ground current and the potential difference generated by the single charges during the movement process includes:
measuring the potential of the power supply end of the grounding device before grounding to obtain high potential;
measuring the discharge end potential of the grounded grounding device to obtain a low potential;
calculating to obtain a potential difference according to the high potential and the low potential;
recording the time of charge movement generated by the grounding device;
and obtaining the grounding current according to the potential difference and the time.
Optionally, the calculating a potential difference according to the high potential and the low potential to obtain a potential difference includes:
and subtracting the low potential from the high potential and taking the absolute value to obtain the potential difference.
A grounding reliability judging device based on charge loss comprises: the charge leading-in module is used for generating a single charge and leading the single charge into the grounding device;
the grounding preparation module is used for grounding the grounding device introduced with the unipolar charges;
the potential measuring module is used for measuring the grounding current and the potential difference generated by the single charges in the moving process;
the resistance calculation module is used for obtaining a grounding resistance according to the grounding current and a preset potential difference;
the grounding judgment module is used for judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
Optionally, the charge introducing module includes:
the charge generation unit is used for separating positive charges or negative charges in the power supply circuit through the unipolar capacitor to obtain unipolar charges;
the charge storage unit is used for guiding the single-polarity charges into the power supply end of the grounding device for storage;
the potential monitoring unit is used for monitoring the potential of the power supply end of the grounding device;
the potential judging unit is used for judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
Optionally, the ground preparation module includes:
a ground wire connecting unit for connecting a discharge end of the grounding device to a ground wire;
and the grounding conduction unit is used for controlling the conduction of the power supply end of the grounding device after the introduction of the single-polarity charges and the discharge end of the grounding device.
Optionally, the electric potential measuring module includes:
the high potential measuring unit is used for measuring the potential of the power supply end of the grounding device before grounding to obtain high potential;
the ground potential measuring unit is used for measuring the discharge end potential of the grounded grounding device to obtain a low potential;
a potential difference calculation unit for calculating a potential difference from the high potential and the low potential;
the time recording unit is used for recording the time of charge movement generated by the grounding device;
and the current calculating unit is used for obtaining the grounding current according to the potential difference and the time.
Optionally, the grounding device includes: the device comprises an operating rod, a grounding wire, a communication module, a positioning module, a pressure sensor and a controller, wherein a handle is arranged at the lower end of the operating rod; the top end of the operating rod is provided with a screw, and an L-shaped bracket is connected to the screw in a threaded manner; the communication module, the positioning module, the pressure sensor and the controller are all arranged in the operating rod; the communication module, the positioning module and the pressure sensor are all electrically connected with the controller.
In conclusion, the invention has the following beneficial effects: because the charges have unipolar charges, in order to avoid the influence of the charges with different polarities on the detection data, the unipolar charges, namely the unipolar charges, are adopted; after the single charges are led into the grounding device, the grounding device is grounded and then quickly released to the ground under the tension of the charges, the charges generate current and potential difference in the moving process, the grounding resistance of the grounding wire can be obtained through the current and the potential difference, and the grounding resistance is compared with a preset threshold range for judgment, so that whether grounding is reliable or not is calculated.
Drawings
FIG. 1 is a schematic flow chart of a method for determining grounding reliability based on charge loss according to the present invention;
FIG. 2 is a block diagram of a grounding reliability determination device based on charge loss according to the present invention;
fig. 3 is an internal structural diagram of a computer device in an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, configuration, and operation, and therefore should not be construed as limiting the present invention.
The invention is described in detail below with reference to the figures and examples.
The invention provides a grounding reliability judging method based on charge loss, as shown in figure 1, comprising the following steps:
200, grounding the grounding device introduced with the unipolar charges;
500, judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
In practical application, because the charges have unipolar charges, in order to avoid the influence of the charges with different polarities on the detection data, unipolar charges, namely unipolar charges, are adopted; after the single charges are led into the grounding device, the grounding device is grounded and then quickly released to the ground under the tension of the charges, the charges generate current and potential difference in the moving process, the grounding resistance of the grounding wire can be obtained through the current and the potential difference, and the grounding resistance is compared with a preset threshold range for judgment, so that whether grounding is reliable or not is calculated.
Further, the generating the unipolar charge and introducing the unipolar charge into the grounding device includes:
positive charges or negative charges in the power supply circuit are separated through the unipolar capacitor to obtain unipolar charges;
leading the single-polarity charges into a power supply end of the grounding device for storage;
monitoring the power supply terminal potential of the grounding device;
judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
In practical application, as the unipolar capacitor only allows charges of one polarity to pass through, the unipolar charges can be obtained, the charges of the wires are led into the power supply end of the grounding device to be stored, so that the potential of the power supply end of the grounding device is continuously increased, and after the potential of the power supply end of the grounding device reaches a preset potential, the power supply circuit is disconnected, and the accumulation of the potential energy of the unipolar charges is completed.
Optionally, the grounding device after the introduction of the unipolar charge is grounded, including:
connecting a discharge end of the grounding device to a grounding wire;
and controlling the power supply end of the grounding device after the introduction of the unipolar charge to be conducted with the discharge end of the grounding device.
In practical application, after the discharge end of the grounding device is connected with the grounding wire to be tested, the power supply end and the discharge end of the grounding device are controlled to be conducted to discharge.
Optionally, the measuring the ground current and the potential difference generated by the single charges during the moving process comprises:
measuring the potential of the power supply end of the grounding device before grounding to obtain high potential;
measuring the discharge end potential of the grounded grounding device to obtain a low potential;
calculating to obtain a potential difference according to the high potential and the low potential;
recording the time of charge movement generated by the grounding device;
and obtaining the grounding current according to the potential difference and the time.
In practical application, because the power supply end potential energy of the grounding device before grounding is accumulated, the potential of the grounding device before grounding is detected to obtain high potential, then after the grounding device is connected with a grounding wire and conducted, the single charge is released to the ground from the discharge end of the grounding device, and the discharge end potential of the grounding device after grounding is detected to obtain low potential; subtracting the low potential from the high potential and taking the absolute value to obtain a potential difference; and carrying out ratio operation on the potential difference and the elapsed time to obtain the grounding current.
As shown in fig. 2, the present invention further provides a device for determining grounding reliability based on charge loss, comprising:
a charge introducing module 10 for generating a unipolar charge, and introducing the unipolar charge into a grounding device;
a grounding preparation module 20 for grounding the grounding device after the introduction of the unipolar charge;
a potential measuring module 30 for measuring the ground current and potential difference generated by the single charges during the movement process;
the resistance calculation module 40 is used for obtaining a grounding resistance according to the grounding current and a preset potential difference;
the grounding judgment module 50 is used for judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
Further, the charge introducing module 10 includes:
the charge generation unit is used for separating positive charges or negative charges in the power supply circuit through the unipolar capacitor to obtain unipolar charges;
the charge storage unit is used for guiding the single-polarity charges into the power supply end of the grounding device for storage;
the potential monitoring unit is used for monitoring the potential of the power supply end of the grounding device;
the potential judging unit is used for judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
Further, the grounding preparation module 20 includes:
a ground wire connecting unit for connecting a discharge end of the grounding device to a ground wire;
and the grounding conduction unit is used for controlling the conduction of the power supply end of the grounding device after the introduction of the single-polarity charges and the discharge end of the grounding device.
Further, the electric potential measuring module 30 includes:
the high potential measuring unit is used for measuring the potential of the power supply end of the grounding device before grounding to obtain a high potential;
the ground potential measuring unit is used for measuring the discharge end potential of the grounded grounding device to obtain a low potential;
a potential difference calculation unit for calculating a potential difference from the high potential and the low potential;
the time recording unit is used for recording the time of charge movement generated by the grounding device;
and the current calculating unit is used for obtaining the grounding current according to the potential difference and the time.
Wherein, the earthing device includes: the device comprises an operating rod, a grounding wire, a communication module, a positioning module, a pressure sensor and a controller, wherein a handle is arranged at the lower end of the operating rod; a screw rod is arranged at the top end of the operating rod, and an L-shaped bracket is connected to the screw rod in a threaded manner; the communication module, the positioning module, the pressure sensor and the controller are all arranged in the operating rod; the communication module, the positioning module and the pressure sensor are all electrically connected with the controller. The grounding device has the functions of grounding state monitoring, electric field induction, automatic positioning, wireless communication and the like. Whether the grounding is good or not is detected by a near electric field electromagnetic wave detection technology, a resistance type pressure sensor is connected to detect whether the grounding is good or not, meanwhile, the automatic positioning of a grounding site is completed, and grounding information and position information are uploaded together. The judgment mechanism of the grounding operation condition is researched, the safe grounding operation is guided, the operation behavior is collected and sent upwards, the correctness of the task site is measured and returned by combining a satellite positioning system, the function of omnibearing management of the field operation is completed, and the automation efficiency of flow management and safety measure execution is improved.
For the specific limitation of the grounding reliability determination device based on charge loss, refer to the above limitation of the grounding reliability determination method based on charge loss, and are not described herein again. All or part of the modules of the grounding reliability judging device based on charge loss can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The computer program is executed by a processor to implement a method for determining ground reliability based on charge loss.
It will be appreciated by those skilled in the art that the configuration shown in fig. 3 is a block diagram of only a portion of the configuration associated with the present application, and is not intended to limit the computing device to which the present application may be applied, and that a particular computing device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: generating a unipolar charge, introducing the unipolar charge into a grounding device; grounding the grounding device after the introduction of the single-polarity charges; measuring the grounding current and the potential difference generated by the single charges in the moving process; obtaining a grounding resistor according to the grounding current and a preset potential difference; judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
In one embodiment, the generating the unipolar charge, the introducing the unipolar charge into the ground device, includes: positive charges or negative charges in the power supply circuit are separated through the unipolar capacitor to obtain unipolar charges; leading the single-polarity charges into a power supply end of the grounding device for storage; monitoring the power supply terminal potential of the grounding device; judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
In one embodiment, the grounding device after the introduction of the unipolar charge is grounded, including: connecting a discharge end of the grounding device to a grounding wire; and controlling the power supply end of the grounding device after the introduction of the unipolar charge to be conducted with the discharge end of the grounding device.
In one embodiment, the measuring the ground current and the potential difference generated by the single charges during the movement comprises: measuring the potential of the power supply end of the grounding device before grounding to obtain high potential; measuring the potential of the discharge end of the grounding device after grounding to obtain a low potential; calculating to obtain a potential difference according to the high potential and the low potential; recording the time of charge movement generated by the grounding device; and obtaining the grounding current according to the potential difference and the time.
In one embodiment, said calculating a potential difference from said high potential and said low potential comprises: and subtracting the low potential from the high potential and taking the absolute value to obtain the potential difference.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synch i nk DRAM (SLDRAM), rambus Direct RAM (RDRAM), direct Rambus Dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A grounding reliability judgment method based on charge loss is characterized by comprising the following steps:
generating a unipolar charge, introducing the unipolar charge into a grounding device;
grounding the grounding device after the introduction of the single-polarity charges;
measuring the grounding current and the potential difference generated by the single charges in the moving process;
obtaining a grounding resistor according to the grounding current and a preset potential difference;
judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
2. The method of claim 1, wherein the generating the unipolar charge and directing the unipolar charge into a grounded device comprises:
positive charges or negative charges in the power supply circuit are separated through the unipolar capacitor to obtain unipolar charges;
leading the single-polarity charges into a power supply end of the grounding device for storage;
monitoring the power supply terminal potential of the grounding device;
judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; if not, the step of guiding the single-polarity charges into the power supply end of the grounding device for storage is executed.
3. The method of claim 2, wherein grounding the grounding device after introducing the unipolar charge comprises:
connecting a discharge end of the grounding device to a grounding wire;
and controlling the power supply end of the grounding device after the introduction of the unipolar charge to be conducted with the discharge end of the grounding device.
4. The method of claim 3, wherein measuring the ground current and the potential difference generated by the unipolar charge during the movement comprises:
measuring the potential of the power supply end of the grounding device before grounding to obtain high potential;
measuring the discharge end potential of the grounded grounding device to obtain a low potential;
calculating to obtain a potential difference according to the high potential and the low potential;
recording the time of charge movement generated by the grounding device;
and obtaining the grounding current according to the potential difference and the time.
5. The method of claim 4, wherein calculating the potential difference from the high potential and the low potential comprises:
and subtracting the low potential from the high potential and taking the absolute value to obtain the potential difference.
6. A device for judging grounding reliability based on charge loss is characterized by comprising:
the charge leading-in module is used for generating a single charge and leading the single charge into the grounding device;
the grounding preparation module is used for grounding the grounding device introduced with the unipolar charges;
the potential measuring module is used for measuring the grounding current and the potential difference generated by the single charges in the moving process;
the resistance calculation module is used for obtaining a grounding resistance according to the grounding current and a preset potential difference;
the grounding judgment module is used for judging according to the grounding resistance; if the grounding resistance is within the range of the preset threshold value, judging that the grounding is reliable; and if the grounding resistance is out of the preset threshold range, judging that the grounding is unreliable.
7. The apparatus of claim 6, wherein the charge injection module comprises:
the charge generation unit is used for separating positive charges or negative charges in the power supply circuit through the unipolar capacitor to obtain unipolar charges;
the charge storage unit is used for guiding the single-polarity charges into the power supply end of the grounding device for storage;
the potential monitoring unit is used for monitoring the potential of the power supply end of the grounding device;
the potential judging unit is used for judging whether the potential of the power supply end of the grounding device reaches a preset potential or not; if yes, the power supply circuit is disconnected; and if not, the step of introducing the single-polarity charges into the power supply end of the grounding device for storage is executed.
8. The apparatus of claim 6, wherein the ground preparation module comprises:
a ground wire connecting unit for connecting a discharge end of the grounding device to a ground wire;
and the grounding conduction unit is used for controlling the conduction of the power supply end of the grounding device after the introduction of the single-polarity charges and the discharge end of the grounding device.
9. The apparatus of claim 6, wherein the potential measurement module comprises:
the high potential measuring unit is used for measuring the potential of the power supply end of the grounding device before grounding to obtain high potential;
the ground potential measuring unit is used for measuring the discharge end potential of the grounded grounding device to obtain a low potential;
a potential difference calculation unit for calculating a potential difference from the high potential and the low potential;
the time recording unit is used for recording the time of charge movement generated by the grounding device;
and the current calculating unit is used for obtaining the grounding current according to the potential difference and the time.
10. The apparatus of claim 6, wherein the grounding means comprises: the device comprises an operating rod, a grounding wire, a communication module, a positioning module, a pressure sensor and a controller, wherein a handle is arranged at the lower end of the operating rod; a screw rod is arranged at the top end of the operating rod, and an L-shaped bracket is connected to the screw rod in a threaded manner; the communication module, the positioning module, the pressure sensor and the controller are all arranged in the operating rod; the communication module, the positioning module and the pressure sensor are all electrically connected with the controller.
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| CN116047362A (en) * | 2023-03-31 | 2023-05-02 | 广东电网有限责任公司茂名供电局 | Grounding reliability detection method, system, medium and computer based on pressure detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116047362A (en) * | 2023-03-31 | 2023-05-02 | 广东电网有限责任公司茂名供电局 | Grounding reliability detection method, system, medium and computer based on pressure detection |
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