CN109254195B - Medium-high voltage line current out-of-limit alarm device - Google Patents
Medium-high voltage line current out-of-limit alarm device Download PDFInfo
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- CN109254195B CN109254195B CN201811326354.XA CN201811326354A CN109254195B CN 109254195 B CN109254195 B CN 109254195B CN 201811326354 A CN201811326354 A CN 201811326354A CN 109254195 B CN109254195 B CN 109254195B
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- 230000006698 induction Effects 0.000 claims abstract description 41
- 230000005389 magnetism Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 12
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16547—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies voltage or current in AC supplies
Abstract
The invention relates to the technical field of metering detection of power equipment, in particular to a medium-high voltage line current out-of-limit alarming device, which comprises an 8-shaped insulating shell, wherein a first main body and a second main body with magnetism conductivity are fixed at intervals from top to bottom on the inner side of the insulating shell, the first main body and the second main body are of hollow cylindrical structures, high-voltage induction coils are uniformly wound on the outer side of the first main body, low-voltage induction coils for metering induction current are uniformly wound on the outer side of the second main body, no overlapping exists between the high-voltage induction coils and the low-voltage induction coils, a communication groove for leading wires to enter and exit is formed in the insulating shell and the first main body, the output end of the low-voltage induction coils is connected with a line current out-of-limit alarming device, and the output end of the current out-of-limit alarming device is connected with an alarming indicator. The invention can directly judge whether the load of the line is out of limit or not through the display of the alarm indicator lamp, and timely find out the overload condition of the line, thereby effectively avoiding the tripping fault of the line.
Description
Technical Field
The invention relates to the technical field of metering detection of power equipment, in particular to a medium-high voltage line current out-of-limit alarm device.
Background
At present, the urban and rural power distribution network in China mainly takes a 10kV power distribution network, the power distribution lines in individual developed areas adopt a hand-in-hand power supply mode, most of the power distribution networks still adopt a single-radiation tree-shaped mode for power supply, and the power supply reliability is poor. Because the urban and rural power distribution network is wide in area responsible for power supply, complex in topography and scattered in load, 10kV lines are complicated, the power supply radius is overlong, the branches of the lines are more, and each feeder line is provided with a load switch to divide the feeder line into different power supply sections, so that the operation mode is complex. Because of adopting the single power supply to supply power, when a certain line of the power distribution network is overloaded, the switch is easy to trip, and the power supply is interrupted. After receiving the power failure information of the line fault, the power supply department needs to find the fault location as soon as possible, eliminate the fault and recover the power transmission.
At present, the inspection period of a 10kV power supply line is once a month, and in the line inspection process, line inspection personnel only observe the external condition of the line through human eyes, so that whether the line and a branch are overloaded or not is difficult to judge, and whether the current running condition is in a reasonable range or not. Often when breaking down because of the circuit overload, need the circuit inspection personnel to patrol the shaft tower step by step. When faults occur in severe weather such as strong wind, thunderstorm, heavy snow and the like or the lines are in areas with complex terrains such as forest areas, mountain ditches, rivers and the like and the faults occur at night, great difficulty is caused to the fault finding of the inspection staff, and a long time is sometimes required to find the fault point.
Disclosure of Invention
The invention provides a medium-high voltage line current out-of-limit alarm device, which overcomes the defects of the prior art, and can effectively solve the problems of time and labor waste, lower working efficiency and line safety hidden trouble existing in the searching of fault points when the existing medium-high voltage line is in line fault due to overload.
The technical scheme of the invention is realized by the following measures: the utility model provides a well high-voltage line electric current warning device that limits beyond limit, including being the insulating casing of 8 font, be fixed with first main part and the second main part that possesses magnetism conductivity from top to bottom at insulating casing inboard by last interval, first main part and second main part are hollow cylindric body structure, evenly twine in the outside of first main part has high-pressure induction coil, evenly twine in the outside of second main part has the low-pressure induction coil that is used for measuring induced current, there is not the overlap between high-pressure induction coil and the low-pressure induction coil, the intercommunication groove that is used for the wire business turn over has been seted up on insulating casing and first main part, low-pressure induction coil's output is connected with the line current and crosses line alarm, the output of current limit alarm is connected with the warning pilot lamp.
The following are further optimizations and/or improvements to the above-described inventive solution:
the line current line crossing alarm comprises a control panel, a direct current measuring module, an analog/digital conversion module, a logic parameter judging module and a digital signal output module, wherein the input end of the direct current measuring module is connected with the output end of the low-voltage induction coil so as to be used for measuring the induction current, the direct current measuring module, the analog/digital conversion module, the logic parameter judging module and the digital signal output module are electrically connected in sequence, the logic parameter judging module is electrically connected with an alarm indicator lamp, and the output end of the digital signal output module is electrically connected with the control panel.
The control panel comprises a parameter display, a parameter adjusting button and a parameter setter, wherein the parameter adjusting button and the parameter setter are electrically connected with the logic parameter judging module.
The alarm indicator lamp is fixedly arranged on the outer side face of the bottom of the insulating shell.
The first main body and the second main body are both cylindrical bodies formed by pressing a plurality of silicon steel sheets.
The insulating shell is made of epoxy resin insulating material.
The invention has reasonable and compact structure and convenient use, and when line inspection personnel inspect the line, the load of the line can be directly judged whether to exceed the limit or not through the display of the alarm indicator lamp, the overload condition of the line can be timely found, and the tripping fault of the line can be effectively avoided. The invention saves a great deal of manpower and material resources for line inspection caused by line overload faults, reduces the overlong power failure time of the line and reduces the loss of users. The invention can facilitate the inspector to quickly and timely eliminate the faults caused by overload of the line load, save a great deal of manpower and material resources spent on line inspection caused by the fault of the line overload, reduce the overlong power failure time of the line and reduce the loss of users.
Drawings
Fig. 1 is a schematic front view of a preferred embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of FIG. 1 without the control panel at A-A.
FIG. 3 is a schematic diagram of the internal logic structure of the line current override alarm of the present invention.
The codes in the drawings are respectively: n1 is a low-voltage induction coil, N2 is a high-voltage induction coil, 1 is an insulating shell, 2 is a first main body, 3 is a second main body, 4 is a communication groove, 5 is an alarm indicator, 6 is a lead wire, 7 is a parameter display, 8 is a parameter adjusting button, and 9 is a parameter setter.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described below with reference to examples and figures:
as shown in fig. 1, 2 and 3, the medium-high voltage line current out-of-limit alarm device comprises an insulation shell 1 in a 8 shape, a first main body 2 and a second main body 3 with magnetism conductivity are fixed on the inner side of the insulation shell 1 from top to bottom at intervals, the first main body 2 and the second main body 3 are of hollow cylindrical structures, a high-voltage induction coil N1 is uniformly wound on the outer side of the first main body 2, a low-voltage induction coil N2 for measuring induced current is uniformly wound on the outer side of the second main body 3, no overlap exists between the high-voltage induction coil N1 and the low-voltage induction coil N2, a communication groove 4 for leading wires to enter and exit is formed in the insulation shell 1 and the first main body 2, a line current out-of-limit alarm device is connected to the output end of the low-voltage induction coil N2, and an alarm indicator lamp 5 is connected to the output end of the current out-of-limit alarm device.
The invention can be divided into an upper part, a middle part and a lower part, wherein the upper part is a high-voltage induction coil N1 part, the middle part is a low-voltage induction coil N2 part, and the lower part is an alarm indicator lamp 5. The working principle of the invention is as follows: the magnetic permeability of the first main body 2 and the second main body 3 is good, the lead 6 of the high-voltage line passes through the upper high-voltage induction coil N1 part, the middle low-voltage induction coil N2 induces current change, the line current crossing alarm can be adjusted and set to an alarm threshold value at will, when the line load current exceeds the set threshold value, the alarm indicator lamp 5 at the lowest part is lightened, and when line inspection personnel inspect, the problem of line overload can be found in time, so that the tripping accident of the line due to overload is avoided.
In actual use, the invention is hung on a wire 6 to be patrolled through the communication groove 4 when passing through the communication groove 4 of the high-voltage induction coil N1, induced current is induced through the low-voltage induction coil N2, the induced current is measured by a current out-of-limit alarm connected with the output end of the low-voltage induction coil N2, the current out-of-limit alarm judges whether the induced current exceeds a set alarm threshold value, and if so, the alarm indicator lamp 5 is lightened. When a line inspection person passes through, whether the load of the line is out of limit or not can be directly judged through the display of the alarm indicator lamp 5, the overload condition of the line is timely found, and the tripping fault of the line is effectively avoided.
The invention can facilitate the inspector to quickly and timely eliminate the faults caused by overload of the line load, save a great deal of manpower and material resources spent on line inspection caused by the fault of the line overload, reduce the overlong power failure time of the line and reduce the loss of users.
The medium-high voltage line current out-of-limit alarm device can be further optimized or/and improved according to actual needs:
as shown in fig. 1 and 3, the line current line crossing alarm device comprises a control panel, a direct current measurement module, an analog/digital conversion module, a logic parameter judgment module and a digital signal output module, wherein the input end of the direct current measurement module is connected with the output end of the low-voltage induction coil N2 so as to be used for measuring the induction current, the direct current measurement module, the analog/digital conversion module, the logic parameter judgment module and the digital signal output module are electrically connected in sequence, the logic parameter judgment module is electrically connected with an alarm indicator lamp, and the output end of the digital signal output module is electrically connected with the control panel.
According to the electromagnetic induction principle, the output end of the low-voltage induction coil N2 is connected with a direct current measuring module, analog current data measured by the direct current measuring module is converted into digital current data through an analog/digital conversion module, a logic parameter judging module logically compares the digital current data with a set line overload threshold value, and if the digital current data exceeds the threshold value, an alarm indicator lamp 5 is triggered to give an alarm.
As shown in fig. 1 and 3, the control panel includes a parameter display 7, a parameter adjustment button 8 and a parameter setter 9, and the parameter adjustment button 8 and the parameter setter 9 are electrically connected with the logic parameter judgment module.
As shown in fig. 1, 2 and 3, the alarm indicator lamp 5 is fixedly installed on the bottom outer side surface of the insulating housing 1.
The alarm indicator lamp 5 is arranged at the bottom of the insulating shell 1, so that a patrol personnel can conveniently find out a line section with line overload on a medium-high voltage line, and the function of prompting is achieved.
As shown in fig. 2, the first body 2 and the second body 3 are both cylinders formed by pressing a plurality of silicon steel sheets.
As shown in fig. 1 and 2, the insulating housing 1 is made of an epoxy insulating material.
The technical characteristics form the optimal embodiment of the invention, the optimal embodiment has stronger adaptability and optimal implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs so as to meet the requirements of different situations.
The use process of the best embodiment of the invention comprises the following steps: the lead 6 passes through the communication groove 4 at one side of the high-voltage induction coil N1, penetrates into the high-voltage induction coil N1 and is fixed, the power circuit change of the medium-high voltage circuit can be judged through the corresponding induction current obtained by the high-voltage induction coil N1 in the low-voltage induction coil N2, and according to the threshold value set by the parameter setter 9 of the circuit current out-of-limit alarm, when the circuit current exceeds the threshold value, the alarm indicator lamp 5 is lightened, and the circuit inspection personnel is prompted that the circuit is overloaded.
Claims (8)
1. The utility model provides a well high-voltage line electric current warning device that limit by mistake, characterized by includes being 8 font insulating housing, be fixed with first main part and the second main part that possesses magnetism conductivity from top to bottom at insulating housing inboard, first main part and second main part are hollow cylindric structure, evenly twine in the outside of first main part has high-voltage induction coil, evenly twine in the outside of second main part has the low-voltage induction coil that is used for measuring induced current, there is not the overlap between high-voltage induction coil and the low-voltage induction coil, the intercommunication groove that is used for the wire business turn over has been seted up on insulating housing and first main part, the output of low-voltage induction coil is connected with the circuit electric current warning device that crosses the line, the output of current warning device that crosses the line electric current is connected with the warning pilot lamp, circuit electric current warning device that crosses the line includes control panel, direct current measuring module, analog/digital conversion module, logic parameter judgement module and digital signal output module, direct current measuring module input and low-voltage induction coil's output are connected for measuring induced current, direct current measuring module, analog/digital conversion module, logic parameter judgement module and digital signal output module are connected in proper order with the electric parameter judgement and digital signal output module.
2. The medium-high line current out-of-limit alarm device according to claim 1, wherein the control panel comprises a parameter display, a parameter adjustment button and a parameter setter, both of which are electrically connected with the logic parameter judgment module.
3. The medium-high line current out-of-limit warning device according to claim 1 or 2, characterized in that the warning indicator lamp is fixedly mounted on the bottom outer side of the insulating housing.
4. The medium-high voltage line current out-of-limit alarm device according to claim 1 or 2, wherein the first body and the second body are both cylindrical bodies formed by pressing a plurality of silicon steel sheets.
5. The medium-high line current out-of-limit alarm device according to claim 3, wherein the first main body and the second main body are both cylindrical bodies formed by pressing a plurality of silicon steel sheets.
6. The medium-high line current out-of-limit warning device according to claim 1, 2 or 5, characterized in that the insulating housing is a housing made of an epoxy insulating material.
7. The medium-high line current out-of-limit alarm device according to claim 3, wherein the insulating housing is a housing made of an epoxy insulating material.
8. The medium-high line current out-of-limit alarm device according to claim 4, wherein the insulating housing is a housing made of an epoxy insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326354.XA CN109254195B (en) | 2018-11-08 | 2018-11-08 | Medium-high voltage line current out-of-limit alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326354.XA CN109254195B (en) | 2018-11-08 | 2018-11-08 | Medium-high voltage line current out-of-limit alarm device |
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| Publication Number | Publication Date |
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| CN109254195A CN109254195A (en) | 2019-01-22 |
| CN109254195B true CN109254195B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811326354.XA Active CN109254195B (en) | 2018-11-08 | 2018-11-08 | Medium-high voltage line current out-of-limit alarm device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182137A (en) * | 1994-12-22 | 1996-07-12 | Tempearl Ind Co Ltd | Induced current detector for device for warning approach of crane to power-transmission or distribution line |
| CN1873427A (en) * | 2005-06-01 | 2006-12-06 | 周凌云 | Caution device for transmitting line |
| CN103792455A (en) * | 2012-10-29 | 2014-05-14 | 国家电网公司 | Alarm device |
| CN104237604A (en) * | 2014-08-28 | 2014-12-24 | 国家电网公司 | Current monitoring warning device for overhead transmission line |
| CN105425089A (en) * | 2015-11-02 | 2016-03-23 | 国网山东济宁市任城区供电公司 | High-tension power transmission cable detection and alarm device |
| CN105717345A (en) * | 2016-04-12 | 2016-06-29 | 国网青海省电力公司海东供电公司 | Pin insulator live low-value detection method and device |
| CN106226652A (en) * | 2016-08-10 | 2016-12-14 | 国网浙江台州市黄岩区供电公司 | A kind of low-voltage overhead line electric leakage long range positioning detection device |
| CN209086318U (en) * | 2018-11-08 | 2019-07-09 | 国网新疆电力有限公司博尔塔拉供电公司 | Mesohigh line current Threshold Crossing Alert device |
-
2018
- 2018-11-08 CN CN201811326354.XA patent/CN109254195B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182137A (en) * | 1994-12-22 | 1996-07-12 | Tempearl Ind Co Ltd | Induced current detector for device for warning approach of crane to power-transmission or distribution line |
| CN1873427A (en) * | 2005-06-01 | 2006-12-06 | 周凌云 | Caution device for transmitting line |
| CN103792455A (en) * | 2012-10-29 | 2014-05-14 | 国家电网公司 | Alarm device |
| CN104237604A (en) * | 2014-08-28 | 2014-12-24 | 国家电网公司 | Current monitoring warning device for overhead transmission line |
| CN105425089A (en) * | 2015-11-02 | 2016-03-23 | 国网山东济宁市任城区供电公司 | High-tension power transmission cable detection and alarm device |
| CN105717345A (en) * | 2016-04-12 | 2016-06-29 | 国网青海省电力公司海东供电公司 | Pin insulator live low-value detection method and device |
| CN106226652A (en) * | 2016-08-10 | 2016-12-14 | 国网浙江台州市黄岩区供电公司 | A kind of low-voltage overhead line electric leakage long range positioning detection device |
| CN209086318U (en) * | 2018-11-08 | 2019-07-09 | 国网新疆电力有限公司博尔塔拉供电公司 | Mesohigh line current Threshold Crossing Alert device |
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| CN109254195A (en) | 2019-01-22 |
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