CN211014512U - Fault positioning device of low-voltage air switch - Google Patents
Fault positioning device of low-voltage air switch Download PDFInfo
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- CN211014512U CN211014512U CN201921744921.3U CN201921744921U CN211014512U CN 211014512 U CN211014512 U CN 211014512U CN 201921744921 U CN201921744921 U CN 201921744921U CN 211014512 U CN211014512 U CN 211014512U
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Abstract
The utility model relates to the field of power supply fault detection tools, in particular to a fault positioning device of a low-voltage air switch, which comprises a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the air switch has current input or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector. The utility model provides a take fault location function's low pressure air switch at first judges whether there is the power failure problem in the user through current transformer, then carries out the fault location through voltage transformer numerical value everywhere, from seeking the house circuit fault location rapidly and advance line location, improves the efficiency of repowering.
Description
Technical Field
The utility model relates to a power supply fault detects the instrument field, more specifically relates to a low pressure air switch's fault locating device.
Background
A low-voltage air switch integrates control and multiple protection functions, and can cut off a user line to achieve the protection effect by judging the conditions that the current exceeds rated current, short circuit or voltage loss and the like. At present, social and economic development is rapid, living standard and living conditions of people are improved, more and more appliances are used in homes, and the air switch plays a vital role in guaranteeing the safety of household appliances and personal safety.
However, a user supplying power needs to go through a power supply line of a cell, then through a building power supply line, enter a first-floor electric energy box for a building where the user is located, and finally enter user equipment after passing through an air switch, so that even if the air switch is triggered, the user cannot necessarily accurately judge the power failure reason and the fault position. In addition, when the maintenance personnel arrive at the site, the maintenance personnel need to run through the electric inspection between the upper and lower floors to find the fault position, and the maintenance complexity is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art air switch and also can't accurate judgement fault location's problem after triggering, provide a low pressure air switch's fault locating device, can assist the position of judging the trouble to solve the problem that house circuit trouble is difficult to seek and judge rapidly, improve the efficiency of repowering.
In order to solve the technical problem, the utility model discloses a technical scheme is: a fault positioning device of a low-voltage air switch comprises a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the current is input to the air switch or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector.
The voltage detector is used for detecting whether voltage exists on the power transmission line or not so as to detect whether the power transmission circuit is in fault or not. The current detector is used for detecting whether the electric energy meter has current which enters a user through the air switch, so that whether the user has power failure is detected. The control module receives a voltage signal of the voltage detector and a current signal of the current detector, and the current of the input current signal received by the control module is zero, namely, the power failure occurs. And further, the fault position is positioned by judging whether the voltage of the voltage detector is zero or not.
Preferably, the voltage detectors are two, and the two voltage detectors are respectively connected to two of the power transmission lines from the cell to the building, the power transmission lines from the building to the electric energy meter and the power transmission lines from the air switch to the users. The voltage detectors are arranged on two of the power transmission lines, and when the voltage detected by the voltage detectors is normal, the voltage detector indicates that a fault occurs on the third power transmission line, so that the installation amount of the voltage detectors can be reduced.
Preferably, the voltage detectors are three and are respectively connected with the power transmission line from the cell to the building, the power transmission line from the building to the electric energy meter and the power transmission line from the air switch to the user. By looking at the voltage situation of the voltage detector it is clear on which power line the fault occurred.
Preferably, the current detector is arranged on a power transmission line from the electric energy meter to the air switch. The current detector detects the current from the electric energy meter to the air switch, whether the current flows into the user equipment is actually checked, and when the current of the current detector is zero, the control module can judge that the power failure occurs.
Preferably, a power module for providing power for the fault location module is further arranged in the housing. The power module can provide power autonomously, and even under the condition that external power supply is interrupted, the fault positioning module can still be used.
Further preferably, a display module for receiving signal states of the voltage detector and the current detector is further arranged in the shell. The maintenance personnel can directly see the signal conditions of the voltage detector and the current detector from the display module, and intuitively know the position of the power transmission line where the fault occurs.
Preferably, the voltage detector is a voltage transformer, and the current detector is a current transformer.
Compared with the prior art, the beneficial effects are: the invention provides a low-voltage air switch with a fault positioning function, which is characterized in that whether a power failure problem exists in a user is judged through a current transformer, then fault position positioning is carried out through the numerical values of voltage transformers at all positions, finally, collection and analysis of voltage and current value data are carried out through control, and fault points and fault information are output to a display module after the fault positions are analyzed, so that the fault position of a residential line is quickly searched and positioned, and the power restoration efficiency is improved.
Drawings
Fig. 1 is an external structural schematic diagram of a fault location device of a low-pressure air switch according to the present invention;
fig. 2 is a schematic circuit connection diagram illustrating an operating state of the fault location device of the low-pressure air switch according to the present invention;
fig. 3 is a schematic circuit diagram illustrating an operating state of another embodiment of the fault location device of the low-pressure air switch according to the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example 1
Fig. 1-2 show an embodiment of a fault locating device for a low-pressure air switch, which comprises a housing 1 and a fault locating module installed in the housing 1; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the air switch has current input or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector. The voltage detector is a voltage transformer, and the current detector is a current transformer.
Specifically, two voltage detectors are arranged and are respectively connected with a power transmission line from a community to a building and a power transmission line from the building to an electric energy meter. The voltage detectors are arranged on the two power transmission lines, and when the voltage detected by the voltage detectors is normal, the voltage detectors indicate that a fault occurs on the third power transmission line, so that the installation amount of the detectors can be reduced.
Specifically, the current detector is arranged on a power transmission line from the electric energy meter to the air switch. The current detector detects the current from the electric energy meter to the air switch, actually checks whether the current flows into the user equipment, and when the current of the current detector is zero, the power failure caused by fault can be judged.
Further, still be provided with the power module who provides the power for fault location module in the casing, power module can be the battery. The power module can provide power autonomously, and even under the condition that external power supply is interrupted, the fault positioning module can still be used.
In addition, a display module used for the voltage detector and the current detector to receive signal states is further arranged in the shell, and the display module can be a display screen. The maintenance personnel can directly see the signal conditions of the voltage detector and the current detector from the reality module, and intuitively know the position of the power transmission line where the fault occurs.
The utility model discloses a theory of operation or work flow: collecting and recording a current transformer It, and comparing a voltage value during fault if It is changed into 0; u1 is a voltage transformer on the transmission line set smaller than that to the building, and U2 is a voltage transformer on the transmission line from the building to the electric energy meter. If U1 is equal to 0, it is judged that the whole building has power failure and belongs to the switch incoming line fault. If U1 ≠ 0 and U2 ═ 0, it is determined that a fault occurs inside the building main electric box, i.e. an electric meter incoming line fault occurs. If U1 is not equal to 0, U2 is not equal to 0, it is determined that the user electric energy meter or the air switch has a fault. The three conditions are power supply faults, and the control module outputs the fault types to the display screen after analyzing the power supply faults.
The beneficial effects of this embodiment: the maintenance personnel of the power transmission line can rapidly find out the fault position of the residential line through the fault positioning device and position the fault position, so that the power recovery efficiency is improved.
Example 2
The present embodiment is another embodiment of a fault location device for a low-voltage air switch, and the difference between the present embodiment and embodiment 1 is that three voltage detectors are provided, which are respectively connected to a power transmission line from a cell to a building, a power transmission line from a building to an electric energy meter, and a power transmission line from an air switch to a user, and by looking at the voltage condition of the voltage detectors, it can be clearly known on which power transmission line a fault occurs.
The working principle of the embodiment is as follows: the control module collects and records the current transformer It, and if It becomes 0, the control module compares the voltage value during the fault; u1 is a voltage transformer arranged on a power transmission line from a cell to a building, U2 is a voltage transformer arranged on a power transmission line from a building to an electric energy meter, and U3 is a voltage transformer arranged on a power transmission line from an air switch to a user. If U1 is equal to 0, it is judged that the whole building has power failure and belongs to the switch incoming line fault. If U1 ≠ 0 and U2 ═ 0, it is determined that a fault occurs inside the building main electric box, i.e. an electric meter incoming line fault occurs. If U1 is not equal to 0, U2 is not equal to 0, U3And (5) judging that the user electric energy meter or the air switch has a fault when the value is 0. If U1 ≠ 0, U2 ≠ 0, and U3 ≠ 0, it is determined as a user indoor line fault. In the four cases, the first three are classified as power supply faults, the fourth belongs to user equipment faults, and the control module outputs the fault types to the display screen after analyzing.
The beneficial effects of this example over example 1: the three voltage transformers are arranged, so that the voltage condition of each power transmission line can be visually known, and meanwhile, the user fault conditions except for power supply faults can also be judged.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The fault positioning device of the low-pressure air switch is characterized by comprising a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the current is input to the air switch or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector.
2. The fault location device of claim 1, wherein the voltage detector is provided with two voltage detectors, and the two voltage detectors are respectively connected to two of the power transmission line from the cell to the building, the power transmission line from the building to the electric energy meter, and the power transmission line from the air switch to the user.
3. The fault location device of claim 1, wherein there are three voltage detectors connecting the cell to the building transmission line, the building to the electric energy meter transmission line and the air switch to the user transmission line.
4. The fault location device of claim 1, wherein the current detector is disposed on the power line from the electric energy meter to the air switch.
5. A fault location device of a low-voltage air switch according to any one of claims 1 to 4, characterized in that a power module for providing power for the fault location module is further arranged in the housing.
6. A fault location device of a low-voltage air switch according to any one of claims 1 to 4, characterized in that a display module for receiving signal states of a voltage detector and a current detector is further arranged in the shell.
7. The fault locating device of a low-voltage air switch according to any one of claims 1 to 4, wherein the voltage detector is a voltage transformer and the current detector is a current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744921.3U CN211014512U (en) | 2019-10-17 | 2019-10-17 | Fault positioning device of low-voltage air switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744921.3U CN211014512U (en) | 2019-10-17 | 2019-10-17 | Fault positioning device of low-voltage air switch |
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| CN211014512U true CN211014512U (en) | 2020-07-14 |
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| CN201921744921.3U Active CN211014512U (en) | 2019-10-17 | 2019-10-17 | Fault positioning device of low-voltage air switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568317A (en) * | 2019-10-17 | 2019-12-13 | 广东电网有限责任公司 | Fault positioning device of low-voltage air switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568317A (en) * | 2019-10-17 | 2019-12-13 | 广东电网有限责任公司 | Fault positioning device of low-voltage air switch |
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