CN210038044U - Multi-pin type vertical grounding body key parameter testing device - Google Patents
Multi-pin type vertical grounding body key parameter testing device Download PDFInfo
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- CN210038044U CN210038044U CN201822112131.5U CN201822112131U CN210038044U CN 210038044 U CN210038044 U CN 210038044U CN 201822112131 U CN201822112131 U CN 201822112131U CN 210038044 U CN210038044 U CN 210038044U
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
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Abstract
The utility model discloses a multi-pin type vertical grounding body key parameter testing device, which comprises a grounding body discharge testing device for measuring multi-pin type vertical grounding body impact resistance and a grounding body performance parameter testing device for measuring multi-pin type vertical grounding body counter-strike voltage; respectively carrying out discharge tests on a grounding system formed by the multi-pin type vertical grounding bodies and a grounding system formed by a common vertical grounding body to obtain impulse grounding resistances of the grounding system formed by the multi-pin type vertical grounding bodies and the grounding system formed by the common vertical grounding body; and measuring the back-striking voltage of a grounding system consisting of the multi-pin vertical grounding bodies and a grounding system consisting of the common vertical grounding body under different working frequencies, and calculating the maximum value of the back-striking voltage. The utility model discloses can verify the exactness and the security of many pin type vertical grounding system structure.
Description
Technical Field
The disclosure relates to a multi-pin type vertical grounding body key parameter testing device.
Background
The transformer substation grounding system is a general name for protecting the safe operation of electrical equipment of a transformer substation, and is divided into a horizontal grounding system and a vertical grounding system, wherein each grounding system is divided into a plurality of types according to different materials and different structures.
The grounding system is used as an important protection means for an electric power system and electrical equipment, and the correctness and safety of the structure of the grounding system play an important role in equipment and personal safety. Therefore, how to verify the correctness and safety of the constructed multi-pin vertical grounding system structure still remains to be solved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the present disclosure provides a multi-pin vertical grounding body key parameter testing device, which can verify the correctness and safety of a multi-pin vertical grounding system structure.
The technical scheme adopted by the disclosure is as follows:
a multi-pin type vertical grounding body key parameter testing device comprises a grounding body discharge testing device for measuring multi-pin type vertical grounding body impact resistance and a grounding body performance parameter testing device for measuring multi-pin type vertical grounding body back-striking voltage;
the grounding body discharge test device comprises a high-voltage direct-current power supply, a capacitor, a ball gap switch, an adjustable resistor, an oscilloscope and a high-voltage probe; the high-voltage direct-current power supply is connected with a mains supply, the capacitor is connected with the high-voltage direct-current power supply in parallel, the capacitor is charged and discharged through the high-voltage direct-current power supply, one end of the spherical gap switch is connected with the capacitor, the other end of the spherical gap switch is connected with the adjustable resistor, the other end of the adjustable resistor is connected with the multi-pin type vertical grounding body, one end of the high-voltage probe is connected with the multi-pin type vertical grounding body, and the other.
Furthermore, the grounding body discharge test device further comprises a current probe, wherein one end of the current probe is connected with the multi-pin type vertical grounding body, and the other end of the current probe is connected with an oscilloscope.
Further, the high-voltage direct-current power supply comprises an auto-coupling voltage regulator, a step-up transformer and a triple voltage rectifying circuit which are connected in series.
Furthermore, the grounding body performance parameter testing device comprises a 5A sine alternating current source, a low-voltage probe and an oscilloscope, wherein the 5A sine alternating current source is connected with the multi-pin type vertical grounding body, one end of the low-voltage probe is connected with the multi-pin type vertical grounding body, and the other end of the low-voltage probe is connected with the oscilloscope.
Through above-mentioned technical scheme, this disclosed beneficial effect is:
according to the method, the accuracy of the structural design of the grounding system consisting of the multi-pin type vertical grounding body can be verified by measuring the impulse resistance of the grounding system consisting of the multi-pin type vertical grounding body under different charging voltages; by measuring the maximum values of the counterattack voltages of the grounding system formed by the multi-pin type vertical grounding body under different working frequencies, whether the multi-pin type vertical grounding system can meet the requirements of personal and equipment safety protection under the working frequency can be verified.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this disclosure, are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the application and not to limit the disclosure.
FIG. 1 is a structural view of a grounding body discharge test apparatus;
fig. 2 is a structural diagram of the grounding body performance parameter testing device.
Detailed Description
The present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
One or more embodiments provide a multi-pin vertical grounding body key parameter testing device, which includes a grounding body discharge testing device for measuring impulse resistance of the multi-pin vertical grounding body and a grounding body performance parameter testing device for measuring counterattack voltage of the multi-pin vertical grounding body.
As shown in figure 1, the grounding body discharge test device comprises a high-voltage direct-current power supply, a capacitor, a ball gap switch and an adjustable resistor RtAn oscilloscope, a current probe and a high-voltage probe; the high-voltage direct-current power supply is connected with a 220V alternating-current commercial power supply, the capacitor is connected with the high-voltage direct-current power supply in parallel, the capacitor is charged and discharged through the high-voltage direct-current power supply, one end of the spherical gap switch is connected with the capacitor, and the other end of the spherical gap switch is connected with the adjustable resistor RtConnection, the resistance RtThe other end of the high-voltage probe is connected with a grounding system consisting of a multi-pin vertical grounding body, and one end of the high-voltage probe is connected with a resistor RtThe other end of the grounding system is connected with an oscilloscope, measures the voltage acting on the multi-pin vertical grounding body and transmits the voltage to the oscilloscope; the resistor RtAnd a current probe is arranged on a circuit connected with the multi-pin type vertical grounding body, is connected with the other end of the oscilloscope, and is used for measuring the current acting on the multi-pin type vertical grounding body and transmitting the current to the oscilloscope.
In FIG. 1, the ball gap switch is of the rotary type, and the capacitor is in the off position when charged, and its resistor R is in the off positiontInfinity is large; when the capacitor is discharged, it is in the conducting position, and at this time, its resistance RtVery small, nearly 0.
In the embodiment, the high-voltage direct-current power supply comprises an autotransformer, a step-up transformer and a triple voltage rectifying circuit which are connected in series. The working principle of the high-voltage direct-current power supply is that alternating-current 220V mains supply outputs 0-250V voltage after passing through an autotransformer, outputs 0-20 kV alternating current after passing through a step-up transformer, and then is converted into direct current for output after passing through a triple voltage rectifying circuit, and the amplitude of the voltage is amplified by three times, namely, negative direct-current high voltage of 0-60 kV is output.
As shown in fig. 2, the grounding body performance parameter testing device comprises a 5A sine alternating current source device, a low-voltage probe and an oscilloscope, wherein the 5A sine alternating current source device is connected with the multi-pin vertical grounding body, one end of the low-voltage probe is connected with the connecting line of the 5A sine alternating current source device and the multi-pin vertical grounding body, and the other end of the low-voltage probe is connected with the oscilloscope. The multi-pin vertical grounding system test is carried out by using a 5A sine alternating current source device, and the counterattack voltage of the multi-pin vertical grounding system under different working frequencies is measured by using a low-voltage probe.
According to the key parameter testing device for the multi-pin vertical grounding body provided by the embodiment, the correctness of the structural design of the grounding system formed by the multi-pin vertical grounding body can be verified by measuring the impulse resistance of the grounding system formed by the multi-pin vertical grounding body under different charging voltages; by measuring the maximum values of the counterattack voltages of the grounding system formed by the multi-pin type vertical grounding body under different working frequencies, whether the multi-pin type vertical grounding system can meet the requirements of personal and equipment safety protection under the working frequency can be verified.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (4)
1. A multi-pin type vertical grounding body key parameter testing device is characterized by comprising a grounding body discharge testing device for measuring multi-pin type vertical grounding body impact resistance and a grounding body performance parameter testing device for measuring multi-pin type vertical grounding body back-striking voltage;
the grounding body discharge test device comprises a high-voltage direct-current power supply, a capacitor, a ball gap switch, an adjustable resistor, an oscilloscope and a high-voltage probe; the high-voltage direct-current power supply is connected with a mains supply, the capacitor is connected with the high-voltage direct-current power supply in parallel, the capacitor is charged and discharged through the high-voltage direct-current power supply, one end of the spherical gap switch is connected with the capacitor, the other end of the spherical gap switch is connected with the adjustable resistor, the other end of the adjustable resistor is connected with the multi-pin type vertical grounding body, one end of the high-voltage probe is connected with the multi-pin type vertical grounding body, and the other.
2. The multi-pin vertical grounding body key parameter testing device according to claim 1, wherein the grounding body discharge testing device further comprises a current probe, one end of the current probe is connected with the multi-pin vertical grounding body, and the other end of the current probe is connected with an oscilloscope.
3. The multi-pin vertical grounding body key parameter testing device according to claim 1, wherein the high voltage direct current power supply comprises an auto-coupling voltage regulator, a step-up transformer and a triple voltage rectifying circuit which are connected in series.
4. The multi-pin vertical grounding body key parameter testing device according to claim 1, wherein the grounding body performance parameter testing device comprises a 5A sine alternating current source, a low-voltage probe and an oscilloscope, wherein the 5A sine alternating current source is connected with the multi-pin vertical grounding body, one end of the low-voltage probe is connected with the multi-pin vertical grounding body, and the other end of the low-voltage probe is connected with the oscilloscope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822112131.5U CN210038044U (en) | 2018-12-14 | 2018-12-14 | Multi-pin type vertical grounding body key parameter testing device |
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| CN201822112131.5U CN210038044U (en) | 2018-12-14 | 2018-12-14 | Multi-pin type vertical grounding body key parameter testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782145A (en) * | 2018-12-14 | 2019-05-21 | 国网山东省电力公司济宁供电公司 | A kind of multiple-pin type Grounding Grids key parameter test device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782145A (en) * | 2018-12-14 | 2019-05-21 | 国网山东省电力公司济宁供电公司 | A kind of multiple-pin type Grounding Grids key parameter test device and method |
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