CN111257797A - Low-voltage low-current load wiring bypass device and operation method thereof - Google Patents
Low-voltage low-current load wiring bypass device and operation method thereof Download PDFInfo
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- CN111257797A CN111257797A CN202010219597.4A CN202010219597A CN111257797A CN 111257797 A CN111257797 A CN 111257797A CN 202010219597 A CN202010219597 A CN 202010219597A CN 111257797 A CN111257797 A CN 111257797A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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Abstract
The invention discloses a low-voltage low-current load wiring bypass device which comprises 2 electric connection terminals, 2 cables, a voltage measuring module, a current transformer and a first switch. The invention also discloses an operation method based on the low-voltage low-current load wiring bypass device. When in rush repair and maintenance, the jumper wire wiring port of the low-voltage wire is operated without power failure through the invention; the invention can transfer the current to the rear section line of the jumper wiring port operation, thereby effectively preventing the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
Description
Technical Field
The invention relates to the field of power system equipment, in particular to a low-voltage low-current load wiring bypass device and an operation method thereof.
Background
At present, in daily low-voltage line urgent repair and line transformation work, because the low-voltage wire that inserts does not have a power failure jumper wire wiring, can have current load during the operation. When the wiring is carried out with load, the problem that the electric arc hurts people is easily generated. With the rapid development of society, people put forward higher and higher requirements on power supply reliability, and the mode of adopting live working, bypass uninterrupted power operation and the like to overhaul the distribution network low-voltage line becomes the most direct and most effective important means for improving the power supply reliability and the high-quality service level.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a low-voltage low-current load wiring bypass device and an operation method thereof. By the aid of the method, when rush repair and maintenance are carried out, jumper wiring port operation of the low-voltage lead is carried out without power failure; the invention can transfer the current to the rear section line of the jumper wiring port operation, thereby effectively preventing the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a low-voltage small-current load wiring bypass device comprises 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
the 2 electric terminals are defined as a power side terminal and a load side terminal, and the 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
the input end of the load side terminal is electrically connected with the non-zero phase line of the load side line, and the output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
and the acquisition negative end of the current measurement module is electrically connected with the zero line.
The invention has the advantages that: when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the invention can transfer the current to the rear section line of the jumper wiring port operation, thereby effectively preventing the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
In the preferred scheme, the alarm module can immediately alarm against the fault connection of the wires or the interphase short circuit before the first switch is closed.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a second switch, the second switch has a function of starting/stopping the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
In this preferred scheme, the second switch can also prevent that the return circuit from causing alarm module false start.
In a preferred embodiment, the alarm module is an acoustic alarm module and/or an optical alarm module.
In a preferred embodiment, the low-voltage low-current load wiring bypass device further comprises a box body, and the box body plays a role in fixing.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a hook, the hook is arranged on the outer side of the box body and fixedly connected with the box body, and the hook is used for fixing the low-voltage low-current load wiring bypass device.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a microprocessor chip, and a first input end of the microprocessor chip is electrically connected with a data output end of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
In a preferred embodiment, the low-voltage low-current load wiring bypass device further includes a display module, and the output terminal of the microprocessor chip is electrically connected to the input terminal of the display module.
The invention also discloses an operation method based on the low-voltage low-current load wiring bypass device, which comprises the following steps:
s1: connecting a power source side terminal to any one of the non-zero phase lines of the power source side line;
s2: connecting a load side terminal to any non-zero phase line of the load side lines, and connecting the load side terminal and a power supply side terminal to the same phase line;
s3: whether voltage exists is judged through the voltage measuring module, if the voltage exists, the wiring error can be judged, and the repair is needed; if no voltage exists, the condition that no wiring error exists can be judged;
s4: closing the first switch, and judging whether the current is within the allowable safe current (below 100A current) through the current measuring module; if the current is within the safe current, the connection operation of the connection jumper wire port is carried out;
s5: after the connection operation of the wiring jumper port is completed, disconnecting the first switch, and removing the load side terminal and the power supply side terminal;
s6: and circularly executing S1-S5 to perform the connection operation of the next phase conductor wiring jumper port until all the connection operations of the phase conductor wiring jumper ports are completed.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch;
the modification of S3 is: judging whether voltage exists or not through the voltage measuring module and/or the alarm module, and judging that wiring is wrong if the voltage measuring module displays the voltage and/or the alarm module gives an alarm; otherwise, judging that no wiring error exists.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a second switch, the second switch has a function of starting/stopping the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module;
the modification of S4 is: the first switch is closed, the second switch is closed, and whether the current is within the allowable safe current or not is judged through the current measuring module; and if the current is within the safe current, carrying out the connection operation of the connection jumper wire port.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the invention can transfer the current to the rear section line of the jumper wiring port operation, thereby effectively preventing the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
Drawings
FIG. 1 is a structural connection diagram of example 1.
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 technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a low-voltage small-current load wiring bypass device comprises 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
2 electric terminals are defined as a power source side terminal and a load side terminal, and 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
an input end of the load side terminal is electrically connected with the non-zero phase line of the load side line, and an output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
the acquisition negative end of the current measurement module is electrically connected with the zero line.
Advantages of example 1: when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the invention can transfer the current to the rear section line of the jumper wiring port operation, thereby effectively preventing the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In example 1, the following modifications can also be made: the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
In the improved embodiment, the alarm module can immediately alarm against the fault wire or the interphase short circuit before the first switch is closed.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage small-current load wiring bypass device also comprises a second switch, the second switch has the function of starting/closing the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
In this modified embodiment, the second switch may also prevent the loop from causing the alarm module to become activated.
In example 1 and the modified examples, the following modifications may also be made: the alarm module is an acoustic alarm module and/or an optical alarm module.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a box body, and the box body plays a role in fixing.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a hook, the hook is arranged on the outer side of the box body and fixedly connected with the box body, and the hook is used for fixing the low-voltage low-current load wiring bypass device.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device also comprises a micro-processing chip, wherein a first input end of the micro-processing chip is electrically connected with a data output end of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a display module, and the output end of the micro-processing chip is electrically connected with the input end of the display module.
Example 2
Embodiment 2 is an operation method based on embodiment 1 and its modified embodiment, comprising the steps of:
s1: connecting a power source side terminal to any one of the non-zero phase lines of the power source side line;
s2: connecting a load side terminal to any non-zero phase line of the load side lines, and connecting the load side terminal and a power supply side terminal to the same phase line;
s3: whether voltage exists is judged through the voltage measuring module, if the voltage exists, the wiring error can be judged, and the repair is needed; if no voltage exists, the condition that no wiring error exists can be judged;
s4: closing the first switch, and judging whether the current is within the allowable safe current (below 100A current) through the current measuring module; if the current is within the safe current, the connection operation of the connection jumper wire port is carried out;
s5: after the connection operation of the wiring jumper port is completed, disconnecting the first switch, and removing the load side terminal and the power supply side terminal;
s6: and circularly executing S1-S5 to perform the connection operation of the next phase conductor wiring jumper port until all the connection operations of the phase conductor wiring jumper ports are completed.
In example 2, the following modifications can also be made: the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch;
s3 is modified as follows: judging whether voltage exists or not through the voltage measuring module and/or the alarm module, and judging that wiring is wrong if the voltage measuring module displays the voltage and/or the alarm module gives an alarm; otherwise, judging that no wiring error exists.
In example 2 and the modified examples, the following modifications can also be made: the low-voltage small-current load wiring bypass device also comprises a second switch, the second switch has the function of starting/closing the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module;
s4 is modified as follows: the first switch is closed, the second switch is closed, and whether the current is within the allowable safe current or not is judged through the current measuring module; and if the current is within the safe current, carrying out the connection operation of the connection jumper wire port.
In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing the positional relationship in the drawings are merely illustrative of the bar and should not be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For example, the connection modes of the components in the embodiments are only examples, and other connection modes still belong to the protection scope of the patent, and the embodiments are not limited to the patent.
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 (10)
1. A low-voltage small-current load wiring bypass device is characterized by comprising 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
the 2 electric terminals are defined as a power side terminal and a load side terminal, and the 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
the input end of the load side terminal is electrically connected with the load side line non-zero phase line, and the output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
and the acquisition negative end of the current measurement module is electrically connected with the zero line.
2. The low-voltage small-current load wiring bypass device according to claim 1, further comprising a second switch having a function of turning on/off the current measuring module, one end of the second switch being electrically connected to the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
3. A low-voltage small-current load wiring bypass device according to claim 1 or 2, further comprising an alarm module having one end electrically connected to the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
4. The low voltage low current load wiring bypass device according to claim 3, wherein the alarm module is an acoustic alarm module and/or an optical alarm module.
5. A low-voltage low-current load wiring bypass device according to claim 1, 2 or 4, characterized in that said low-voltage low-current load wiring bypass device further comprises a case, said case serving as a fixing means.
6. The low-voltage small-current load wiring bypass device as claimed in claim 5, further comprising a hook, wherein the hook is arranged outside the box body and is fixedly connected with the box body, and the hook is used for fixing the low-voltage small-current load wiring bypass device.
7. The low-voltage small-current load wiring bypass device according to claim 1, 2, 4 or 6, characterized in that the low-voltage small-current load wiring bypass device further comprises a microprocessor chip, a first input terminal of the microprocessor chip is electrically connected with a data output terminal of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
8. A method of operating a low voltage low current load wiring bypass device according to any of claims 1 to 7, comprising the steps of:
s1: connecting a power source side terminal to any one of the non-zero phase lines of the power source side line;
s2: connecting a load side terminal to any non-zero phase line of the load side lines, and connecting the load side terminal and a power supply side terminal to the same phase line;
s3: whether voltage exists is judged through the voltage measuring module, if the voltage exists, the wiring error can be judged, and the repair is needed; if no voltage exists, the condition that no wiring error exists can be judged;
s4: closing the first switch, and judging whether the current is within the allowable safe current through the current measuring module; if the current is within the safe current, the connection operation of the connection jumper wire port is carried out;
s5: after the connection operation of the wiring jumper port is completed, disconnecting the first switch, and removing the load side terminal and the power supply side terminal;
s6: and circularly executing S1-S5 to perform the connection operation of the next phase conductor wiring jumper port until all the connection operations of the phase conductor wiring jumper ports are completed.
9. The operating method according to claim 8, wherein the low voltage low current load wiring bypass device further comprises an alarm module, one end of which is electrically connected to the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch;
the modification of S3 is: judging whether voltage exists or not through the voltage measuring module and/or the alarm module, and judging that wiring is wrong if the voltage measuring module displays the voltage and/or the alarm module gives an alarm; otherwise, judging that no wiring error exists.
10. The operating method according to claim 8 or 9, wherein the low-voltage low-current load wiring bypass device further comprises a second switch having a function of turning on/off the current measuring module, one end of the second switch being electrically connected to the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module;
the modification of S4 is: the first switch is closed, the second switch is closed, and whether the current is within the allowable safe current or not is judged through the current measuring module; and if the current is within the safe current, carrying out the connection operation of the connection jumper wire port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219597.4A CN111257797A (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219597.4A CN111257797A (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device and operation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111257797A true CN111257797A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010219597.4A Pending CN111257797A (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device and operation method thereof |
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| CN (1) | CN111257797A (en) |
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- 2020-03-25 CN CN202010219597.4A patent/CN111257797A/en active Pending
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