CN220730399U - Grounding comprehensive monitoring device and monitoring box - Google Patents
Grounding comprehensive monitoring device and monitoring box Download PDFInfo
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- CN220730399U CN220730399U CN202320064649.4U CN202320064649U CN220730399U CN 220730399 U CN220730399 U CN 220730399U CN 202320064649 U CN202320064649 U CN 202320064649U CN 220730399 U CN220730399 U CN 220730399U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 114
- 238000012806 monitoring device Methods 0.000 title claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims description 46
- 238000005070 sampling Methods 0.000 claims description 14
- 230000008054 signal transmission Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 34
- 238000005259 measurement Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model provides a grounding comprehensive monitoring device and a monitoring box, comprising a box body and a grounding resistance monitoring module, and is characterized in that a control module, a switching module and an outer armor monitoring module are arranged in the box body; the grounding resistance monitoring module comprises a grounding resistance detector and a measuring piece, wherein the grounding resistance detector is positioned in the box body and is connected with the box body, the measuring piece is positioned outside the box body, the measuring piece is electrically connected with the access end of the switching module through a cable penetrating through the box body, the control module is positioned in the box body and is connected with the box body and is electrically connected with the grounding resistance detector, at least one part of the outer armor monitoring module extends out of the box body and is matched with the outer armor circuit, and the other part of the outer armor monitoring module is positioned in the box body and is electrically connected with the control module; the switching module is electrically connected with the control module, and the output end of the switching module can be electrically connected with the grounding resistance monitoring module or the outer armor monitoring module respectively.
Description
Technical Field
The utility model belongs to the technical field of power electrical equipment, and particularly relates to a grounding comprehensive monitoring device and a monitoring box.
Background
The grounding resistor refers to the resistor encountered when current flows into the ground from the grounding device and then flows to the other grounding body or diffuses to the distant place through the ground, and comprises the resistor of the grounding wire and the grounding body, and mainly comprises the resistor of the grounding wire and the grounding body, the contact resistor between the grounding body and the resistor of the ground, and the resistor of the ground between the two grounding bodies or the ground resistor from the grounding body to the infinity. The size of the grounding resistor directly reflects the good degree of the electric device in contact with the ground, reflects the scale of the grounding grid, and reflects whether the power distribution environment is safe or not.
The existing grounding detection mode is single, and the existing grounding resistance detection method cannot detect the potential deviation of the grounding network in different areas, so that the current interference in the long-circuit shielding ground caused by the potential deviation cannot be solved, and the current signal is easy to cause an electric fire, so that the hidden danger of the grounding resistance cannot be completely found in the grounding detection. And when facing multi-purpose distribution environment, single detecting means has lower testing result, and in order to solve above-mentioned problem, need prepare various check out test set, in order to guarantee to have better testing result to comparatively various distribution environment, it is more to detect the preparation work to detection work efficiency is lower.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, so that a lower detection result is achieved through various detection equipment for various power distribution environments, the wiring of the grounding comprehensive monitoring device is simplified, and the work allocation of different detection equipment is simplified.
In order to achieve the purpose, the utility model provides a grounding comprehensive monitoring device which comprises a box body and a grounding resistance monitoring module, wherein a control module, a switching module and an outer armor monitoring module are arranged in the box body;
the grounding resistance monitoring module comprises a grounding resistance detector and a measuring piece, wherein the grounding resistance detector is positioned in the box body and is connected with the box body, the measuring piece is positioned outside the box body, the measuring piece is electrically connected with an access end of the switching module through a cable penetrating through the box body, the control module is positioned in the box body and is connected with the box body and is electrically connected with the grounding resistance detector, at least one part of the outer armor monitoring module extends out of the box body and is matched with an outer armor circuit, and the other part of the outer armor monitoring module is positioned in the box body and is electrically connected with the control module;
the switching module is electrically connected with the control module, and the output end of the switching module can be electrically connected with the grounding resistance monitoring module or the outer armor monitoring module respectively.
Further, a transformer neutral point monitoring module is further arranged in the box body, at least one part of the transformer neutral point monitoring module extends out of the box body and is matched with a transformer neutral point, and the other part of the transformer neutral point monitoring module is positioned in the box body and is electrically connected with the control module;
the output end of the switching module can be electrically connected with the transformer neutral point monitoring module.
Further, the switching module is a contactor, and the contactor can realize that at least one of the grounding resistance monitoring module, the outer armor monitoring module and the transformer neutral point monitoring module is connected with a grounding monitoring site through a switching contact according to the electric signal of the control module.
Further, the transformer neutral point monitoring module comprises a voltage transmitter, a first signal acquisition port of the voltage transmitter is matched with the transformer neutral point, a second signal acquisition port of the voltage transmitter is electrically connected with the output end of the switching module, and a signal transmission port of the voltage transmitter is electrically connected with the control module.
Further, the signal transmission port of the voltage transmitter is connected with the control module through a bus.
Further, the control module is provided with a processing unit for forming the outer armor monitoring module, a voltage sampling piece is arranged at the grounding point of the outer armor, and the voltage sampling piece is connected with a corresponding signal input port of the control module.
Further, a current transformer is further arranged at the grounding point of the outer armor, and the current transformer is connected with a corresponding signal input port of the control module.
Further, a safety terminal is arranged between the voltage sampling piece and the control module.
Further, the grounding resistance monitoring module is detachably matched with the box body, the transformer neutral point monitoring module is detachably matched with the box body, and the control module is detachably matched with the box body.
The utility model provides a monitoring box, which comprises a box body, a ground resistance detector, a control module, a switching module and an outer armor monitoring module, wherein the box body is any one of the above;
the opening part of box is equipped with the door body, the box with the door body encloses and closes and form the cavity, ground resistance detector the switching module control module with at least a portion of outer armour monitoring module is located in the cavity.
Advantageous effects
According to the scheme, the monitoring work of the grounding comprehensive monitoring device is monitored and controlled through the set control module, the detection of the grounding resistance is intelligently controlled, the detection result is monitored in real time, and the detection efficiency is improved; the measuring piece through setting up can receive detection module's detected signal, still detect the voltage signal of transformer neutral point department through transformer neutral point monitoring module simultaneously, detect the current signal and the voltage signal of outer armour circuit through outer armour monitoring module, this scheme will ground resistance signal, the voltage signal of transformer neutral point department and the current signal voltage signal of outer armour circuit collect to control module, compare in traditional detecting means, need three independent monitoring devices, carry out the detection and the collection processing of relevant signal respectively, this scheme only needs a control module, consequently, detection integration has been improved, detection work efficiency has been improved.
Drawings
Fig. 1 is a schematic block diagram of a grounding integrated monitoring device according to a first embodiment and a second embodiment of the present utility model.
Reference numerals: 1. a control module; 2. a switching module; 3. a ground resistance monitoring module; 4. an outer armor monitoring module; 5. a transformer neutral point monitoring module; 6. a safety terminal; 7. a current transformer; 8. a voltage sampling member; 9. a transformer neutral point; 10. a ground terminal; 11. a measuring member; 12. and a power supply module.
Detailed Description
The ground resistance detection box and the ground resistance detection apparatus of the present utility model will be described in detail with reference to the accompanying drawings.
Example 1
The grounding comprehensive monitoring device comprises a box body and a grounding resistance monitoring module 3, wherein a control module 1, a switching module 2 and an outer armor monitoring module 4 are arranged in the box body;
the grounding resistance monitoring module 3 comprises a grounding resistance detector and a measuring piece 11, wherein the grounding resistance detector is positioned in the box body and is connected with the box body, the measuring piece 11 is positioned outside the box body, the measuring piece 11 is electrically connected with the access end of the switching module 2 through a cable penetrating through the box body, the control module 1 is positioned in the box body and is connected with the grounding resistance detector, at least one part of the outer armor monitoring module 4 extends out of the box body and is matched with an outer armor circuit, and the other part of the outer armor monitoring module is positioned in the box body and is electrically connected with the control module 1;
the switching module 2 is electrically connected with the control module 1, and the output end of the switching module 2 can be electrically connected with the grounding resistance monitoring module 3 or the outer armor monitoring module 4 respectively.
The test module of the grounding resistance detector is an auxiliary grounding test method. It should be noted that the auxiliary grounding electrode method is suitable for a grounding mode which is convenient for disconnecting the device, and can measure single-point or multi-point grounding. The working principle is mainly that a test current is applied between a measured object and a far-point auxiliary grounding electrode, the potential difference between the measured object and the near-point auxiliary grounding electrode is measured, and the grounding resistance value is calculated through the current and the potential difference value. This measurement scheme has less disturbance and more accurate measurement, requiring the provision of two auxiliary ground electrodes, namely the measurement piece 11 and the further ground terminal 10.
Specifically, the scheme monitors and controls the monitoring work of the grounding comprehensive monitoring device through the control module 1, intelligently controls the detection of the grounding resistance and monitors the detection result in real time, and improves the detection efficiency; the measuring part 11 through setting up can receive detection module's detected signal, still detect the current signal and the voltage signal of outer armour circuit through outer armour monitoring module 4 simultaneously, this scheme will ground resistance signal and the current signal voltage signal of outer armour circuit collect to control module 1, compare in traditional detecting means, need three independent monitoring devices, carry out the detection and the collection processing of relevant signal respectively, this scheme only needs a control module 1, consequently, improved the detection integration, improved detection work efficiency. The purpose that outer armour detected is to avoid having the potential difference owing to there is the earth between two places of outer armour ground, and lead to outer armour to fire owing to voltage production electric current on the outer armour, can carry out signal transmission between outer armour monitoring module 4 and the control module 1 of this scheme, control module 1 can obtain the electric current signal voltage signal of outer armour through outer armour monitoring module 4 promptly, the signal acquisition part of outer armour monitoring module 4 stretches out outside the box, cooperate with outer armour circuit, thereby form one of them electrode that voltage detected, this electrode cooperates with outer armour, and the output of switch module 2 can be connected with outer armour monitoring module 4 electricity, namely through switch module 2, outer armour monitoring module 4 can link to each other with measuring part 11, thereby form voltage detection's another electrode, the testing site of this electrode is the testing site of ground resistance detector, the outer armour monitoring module 4 of this scheme can detect the electric voltage of earth between above-mentioned two electrodes, thereby judge in time that outer armour probably has the electric current to lead to even fire owing to the earth.
The switching module 2 in this scheme is connected with control module 1 electricity, the earthing-out end of switching module 2 can be connected with ground resistance monitoring module 3 or outer armour monitoring module 4 electricity respectively, control module 1 can control to measure piece 11 and ground resistance monitoring module 3 or outer armour monitoring module 4 electricity according to the detection needs promptly, when measuring piece 11 and ground resistance monitoring module 3 electricity are connected, measuring piece 11 and the ground terminal 10 cooperation that directly is connected with ground resistance detector, ground resistance monitoring module 3 can normally carry out the detection of contact resistance, when measuring piece 11 and outer armour monitoring module 4 electricity are connected, outer armour monitoring module 4 can normally carry out the detection of voltage. According to the scheme, the grounding resistance monitoring module 3 or the outer armor monitoring module 4 are respectively connected with the same measuring piece 11 through the switching module 2, when the grounding comprehensive monitoring device is built, the measuring piece 11 is only required to be connected with the access end of the switching module 2 in the box through a cable, the grounding end of the switching module 2 in the box is respectively connected with the grounding resistance monitoring module 3 and the outer armor monitoring module 4, and the normal connection of the grounding resistance monitoring module 3 and the outer armor monitoring module 4 is realized through the switching module 2, so that the wiring of the grounding comprehensive monitoring device is simplified.
In an alternative embodiment, a transformer neutral point monitoring module 5 is further arranged in the box body, at least one part of the transformer neutral point monitoring module 5 extends out of the box body and is matched with a transformer neutral point 9, and the other part of the transformer neutral point monitoring module is positioned in the box body and is electrically connected with the control module 1;
the output terminal of the switching module 2 can be electrically connected with the transformer neutral monitoring module 5.
The switching module 2 is electrically connected with the control module 1, the output end of the switching module 2 can be electrically connected with the transformer neutral point monitoring module 5, namely, the control module 1 can control the measuring piece 11 to be electrically connected with the transformer neutral point monitoring module 5 according to detection requirements, and when the measuring piece 11 is electrically connected with the transformer neutral point monitoring module 5, the transformer neutral point monitoring module 5 can normally detect the voltage at the transformer neutral point 9.
Specifically, at least a part of the transformer neutral point monitoring module 5 extends out of the box body and is matched with the transformer neutral point 9, namely, one signal acquisition end of the transformer neutral point monitoring module 5 extends out of the box body through a cable and is matched with the transformer neutral point 9, so that one electrode for detecting the voltage of the transformer neutral point 9 is formed, the output end of the switching module 2 can be electrically connected with the other signal acquisition end of the transformer neutral point monitoring module 5, namely, the transformer neutral point monitoring module 5 can be connected with the measuring piece 11 through the switching module 2, so that the other electrode for detecting the voltage of the transformer neutral point 9 is formed, and the detection site of the electrode is the detection site of the grounding resistance detector.
In an alternative embodiment, the switching module 2 is a contactor, and the contactor can be connected with the ground monitoring site through at least one of the ground resistance monitoring module 3, the outer armor monitoring module 4 and the transformer neutral monitoring module 5 by switching contacts according to the electric signal of the control module 1.
In an alternative embodiment, the transformer neutral monitoring module 5 comprises a voltage transmitter, a first signal acquisition port of the voltage transmitter is matched with the transformer neutral 9, a second signal acquisition port is electrically connected with the output end of the switching module 2, and a signal transmission port of the voltage transmitter is electrically connected with the control module 1.
Because the voltage sampling path number of the control module 1 is limited, for voltage detection at the neutral point 9 of the transformer, the scheme adopts a voltage transmitter and is connected to the control module 1 in a bus mode, so that the voltage sampling function is realized.
In an alternative embodiment, the signal transmission port of the voltage transmitter is connected to the control module 1 via a bus.
In an alternative embodiment, the control module 1 has a processing unit for forming an outer sheath monitoring module 4, the outer sheath ground point being provided with a voltage sampling member 8, the voltage sampling member 8 being connected to a corresponding signal input port of the control module 1.
In an alternative embodiment, a current transformer 7 is further arranged at the grounding point of the outer armor, and the current transformer 7 is connected with a corresponding signal input port of the control module 1.
In an alternative embodiment, a safety terminal 6 is provided between the voltage sampling element 8 and the control module 1.
Preferably, the scheme can realize the voltage and current detection of 10KV outer armor.
Specifically, six-way current and voltage detection can be realized by the scheme, namely, the scheme is matched with the cable respectively through the six-way current transformer 7, and the detection of the armor current is realized. Considering that the 10KV outer armor can be well grounded, even if 10KV electric leakage occurs to the outer armor, a high-voltage electric field only exists at the grounding point of the outer armor, the grounding comprehensive monitoring device is far away from the 10KV outer armor end, the impedance of a voltage sampling line is large, and the risk that the grounding comprehensive monitoring device is damaged by electric leakage voltage does not exist. The voltage sampling piece 8 in this scheme is connected with the signal input port of the control module 1 through a cable, and a fuse is arranged on the cable, so as to avoid the condition of general short circuit.
In an alternative embodiment, the ground resistance monitoring module 3 is detachably engaged with the case, the transformer neutral monitoring module 5 is detachably engaged with the case, and the control module 1 is detachably engaged with the case.
In an alternative embodiment, the power supply module 12 is further included; the access end of the power module 12 is connected with an external alternating current cable, and the access end of the power module 12 is respectively connected with the power supply ports of the control module 1, the voltage transmitter, the grounding resistance detector and the contactor.
A power module 1217 is disposed within the housing 11 for powering the ground fault integrated monitoring device.
Specifically, through power module 12, power module 1217 is realized for ground resistance detector, control module 1, voltage transmitter, the contactor energy supply in the box, avoids the problem of external power connection. The power module 1217 may be an ac power source and a dc power source, which satisfy various usage requirements.
It is worth mentioning that the grounding comprehensive monitoring device provided by the utility model selects measurement items such as grounding resistance measurement, soil resistivity measurement or grounding integrity measurement through man-machine interaction when being used independently, and sets measurement time, can select to measure at certain intervals or at fixed time, can measure grounding resistance by using an auxiliary grounding test method and a clamp test method, and improves measurement efficiency.
Example two
The utility model provides a monitoring box, which comprises a box body, a ground resistance detector, a control module 1, a switching module 2 and an outer armor monitoring module 4, wherein the box body is provided with a plurality of grounding resistors;
the opening part of box is equipped with the door body, and box and door body enclose and close the formation cavity, and ground resistance detector, switching module 2, control module 1 and outer armour monitoring module 4 are located the cavity at least partly.
It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, last, and next, etc. do not denote any order. These words may be interpreted as names.
The above embodiments are only suitable for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, and thus all equivalent technical solutions are also within the scope of the present utility model, which is defined by the claims.
Claims (10)
1. The grounding comprehensive monitoring device comprises a box body and a grounding resistance monitoring module (3), and is characterized in that a control module (1), a switching module (2) and an outer armor monitoring module (4) are arranged in the box body;
the grounding resistance monitoring module (3) comprises a grounding resistance detector and a measuring piece (11), wherein the grounding resistance detector is positioned in the box body and is connected with the box body, the measuring piece (11) is positioned outside the box body, the measuring piece (11) is electrically connected with the access end of the switching module (2) through a cable penetrating through the box body, the control module (1) is positioned in the box body and is connected with the box body and is electrically connected with the grounding resistance detector, at least one part of the outer armor monitoring module (4) stretches out of the box body and is matched with an outer armor circuit, and the other part of the outer armor monitoring module is positioned in the box body and is electrically connected with the control module (1);
the switching module (2) is electrically connected with the control module (1), and the output end of the switching module (2) can be electrically connected with the grounding resistance monitoring module (3) or the outer armor monitoring module (4) respectively.
2. The grounding integrated monitoring device according to claim 1, wherein a transformer neutral point monitoring module (5) is further arranged in the box body, at least one part of the transformer neutral point monitoring module (5) extends out of the box body and is matched with a transformer neutral point (9), and the other part of the transformer neutral point monitoring module is positioned in the box body and is electrically connected with the control module (1);
the output end of the switching module (2) can be electrically connected with the transformer neutral point monitoring module (5).
3. The grounding integrated monitoring device according to claim 2, wherein the switching module (2) is a contactor, and the contactor can realize that at least one of the grounding resistance monitoring module (3), the outer armor monitoring module (4) and the transformer neutral point monitoring module (5) is connected with a grounding monitoring site through a switching contact according to an electric signal of the control module (1).
4. The grounding integrated monitoring device according to claim 2, wherein the transformer neutral point monitoring module (5) comprises a voltage transmitter, a first signal acquisition port of the voltage transmitter is matched with a transformer neutral point (9), a second signal acquisition port of the voltage transmitter is electrically connected with a connection-out end of the switching module (2), and a signal transmission port of the voltage transmitter is electrically connected with the control module (1).
5. The grounding integrated monitoring apparatus according to claim 4, wherein the signal transmission port of the voltage transmitter is connected with the control module (1) through a bus.
6. The grounding integrated monitoring device according to claim 1, characterized in that the control module (1) is provided with a processing unit for forming the outer armor monitoring module (4), a voltage sampling piece (8) is arranged at an outer armor grounding point, and the voltage sampling piece (8) is connected with a corresponding signal input port of the control module (1).
7. The grounding integrated monitoring device according to claim 6, wherein a current transformer (7) is further arranged at the grounding point of the outer armor, and the current transformer (7) is connected with a corresponding signal input port of the control module (1).
8. The ground fault integrated monitoring device according to claim 6, characterized in that a safety terminal (6) is arranged between the voltage sampling member (8) and the control module (1).
9. The grounding integrated monitoring device according to claim 2, wherein the grounding resistance monitoring module (3) is detachably matched with the box body, the transformer neutral point monitoring module (5) is detachably matched with the box body, and the control module (1) is detachably matched with the box body.
10. A monitoring box, characterized by comprising a box body according to any one of claims 1-9, a ground resistance detector, a control module (1), a switching module (2) and an outer armor monitoring module (4);
the opening part of box is equipped with the door body, the box with the door body encloses and closes and form the cavity, ground resistance detector switch module (2), control module (1) with at least a portion of outer armour monitoring module (4) are located in the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320064649.4U CN220730399U (en) | 2023-01-09 | 2023-01-09 | Grounding comprehensive monitoring device and monitoring box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320064649.4U CN220730399U (en) | 2023-01-09 | 2023-01-09 | Grounding comprehensive monitoring device and monitoring box |
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| Publication Number | Publication Date |
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| CN220730399U true CN220730399U (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320064649.4U Active CN220730399U (en) | 2023-01-09 | 2023-01-09 | Grounding comprehensive monitoring device and monitoring box |
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| CN (1) | CN220730399U (en) |
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2023
- 2023-01-09 CN CN202320064649.4U patent/CN220730399U/en active Active
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