CN105223465A - A kind of fast finding low-voltage circuit leak current fault point apparatus - Google Patents
A kind of fast finding low-voltage circuit leak current fault point apparatus Download PDFInfo
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- CN105223465A CN105223465A CN201510558768.5A CN201510558768A CN105223465A CN 105223465 A CN105223465 A CN 105223465A CN 201510558768 A CN201510558768 A CN 201510558768A CN 105223465 A CN105223465 A CN 105223465A
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- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000004088 simulation Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 description 5
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- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The invention discloses a kind of fast finding low-voltage circuit leak current fault point apparatus, it relates to electrical equipment technical field, simulation electric pole is provided with analog line, one end of analog line is connected with the outlet switch being arranged on switchboard inside by low-pressure line-outgoing, outlet switch is connected with the master switch being arranged on switchboard inside, the inside of electric energy metering box is separately installed with secondary protection device, three-level protective device, secondary protection device is connected with analog line by wire, and three-level protective device is connected with secondary protection device; The present invention is suitable for all low voltage failure and searches, easy to learn, understandable practicality, the leak current fault point time of searching can be shortened, reduce manpower expenditure, reduce labour intensity, raise labour efficiency, shorten power off time, good service level can be improved, guarantee that business economic interests are not suffered a loss.
Description
Technical field
The present invention relates to a kind of fast finding low-voltage circuit leak current fault point apparatus, belong to electrical equipment technical field.
Background technology
Following shortcoming is there is in existing low-voltage circuit leak current fault point when searching:
1, current, countryside low-voltage electric distribution platform district is more, and powering area is comparatively large, and also has part platform district circuit not complete transformation, and not etc., once there is electric leakage, trouble spot is not indefinite for line quality situation, searches that leak current fault point spended time is many, manpower is large;
2, because of after electric leakage power failure, the short time can not recover power transmission, causes client to be unsatisfied with, affects good service work;
3, because of after electric leakage power failure, supplied electricity less, affected Utilities Electric Co.'s economic benefit;
4, special in flood season, ambient humidity increases, and low-voltage platform area line electrical leakage fault phase is to increasing, and workload increases thereupon.
Summary of the invention
For the problems referred to above, the technical problem to be solved in the present invention is to provide a kind of fast finding low-voltage circuit leak current fault point apparatus.
The present invention is a kind of fast finding low-voltage circuit leak current fault point apparatus, and it comprises switchboard, master switch, outlet switch, electric energy metering box, secondary protection device, three-level protective device, simulation electric pole, analog line, low-pressure line-outgoing; Simulation electric pole is provided with analog line; one end of analog line is connected with the outlet switch being arranged on switchboard inside by low-pressure line-outgoing; outlet switch is connected with the master switch being arranged on switchboard inside; the inside of electric energy metering box is separately installed with secondary protection device, three-level protective device; secondary protection device is connected with analog line by wire, and three-level protective device is connected with secondary protection device.
As preferably, described switchboard is the charged switchboard of three-phase four-wire system, the function of load simulation circuit line power supply.
As preferably, described outlet switch is switchboard outgoing line side gauge tap, has circuit leakage tripping function.
As preferably, described low-pressure line-outgoing is drawn, to the wire of 0.4kV overhead transmission line first support bar from switchboard outlet leakage switch.
As preferably, described simulation electric pole connects the support of switchboard low-pressure line-outgoing to electric energy metering box circuit.
As preferably, described analog line is 0.4kV, 0.22kV circuit leading to user from low tension switch.
As preferably, described electric energy metering box is by the measuring apparatus of entrance line to user from electric pole.
As preferably, described secondary protection device is protective device in electric energy metering box.
As preferably, described three-level protective device is the indoor protective device of user.
Beneficial effect of the present invention is: be suitable for all low voltage failure and search, easy to learn, understandable practicality, the leak current fault point time of searching can be shortened, reduce manpower expenditure, reduce labour intensity, raise labour efficiency, shorten power off time, good service level can be improved, guarantee that business economic interests are not suffered a loss.
Accompanying drawing explanation
For ease of illustrating, the present invention is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present invention.
In figure: 1-switchboard; 2-master switch; 3-outlet switch; 4-electric energy metering box; 5-secondary protection device; 6-three-level protective device; 7-simulates electric pole; 8-analog line; 9-low-pressure line-outgoing.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below by the specific embodiment shown in accompanying drawing, the present invention is described.But should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
As shown in Figure 1, this embodiment by the following technical solutions: it comprises switchboard 1, master switch 2, outlet switch 3, electric energy metering box 4, secondary protection device 5, three-level protective device 6, simulation electric pole 7, analog line 8, low-pressure line-outgoing 9; Simulation electric pole 7 is provided with analog line 8; one end of analog line 8 is connected with the outlet switch 3 being arranged on switchboard 1 inside by low-pressure line-outgoing 9; outlet switch 3 is connected with the master switch 2 being arranged on switchboard 1 inside; the inside of electric energy metering box 4 is separately installed with secondary protection device 5, three-level protective device 6; secondary protection device 5 is connected with analog line 8 by wire, and three-level protective device 6 is connected with secondary protection device 5.
Further, described switchboard 1 is the charged switchboard of three-phase four-wire system, the function of load simulation circuit line power supply.
Further, described outlet switch 3 is switchboard outgoing line side gauge tap, has circuit leakage tripping function.
Further, described low-pressure line-outgoing 9 is drawn, to the wire of 0.4kV overhead transmission line first support bar from switchboard outlet leakage switch.
Further, described simulation electric pole 7 connects the support of switchboard low-pressure line-outgoing to electric energy metering box circuit.
Further, described analog line 8 is 0.4kV, 0.22kV circuits leading to user from low tension switch.
Further, described electric energy metering box 4 is by the measuring apparatus of entrance line to user from electric pole.
Further, described secondary protection device 5 is protective devices in electric energy metering box.
Further, described three-level protective device 6 is the indoor protective devices of user.
The principle of work of this embodiment is: the tripping operation of electric leakage switchboard one-level outlet switch, examination is sent unsuccessful.
Lookup method illustrates:
1, check which phase phase line electric leakage judgement is.
Method is: three phase lines of switchboard low-pressure line-outgoing protection switch (diagram A place) outgoing line side and a neutral line are all disconnected; then taken off three phase lines and a neutral line are installed in after in the phase line wherein of protector inlet wire side; with clamp on amperemeter by measuring mutually; what record has electric current that is exactly which phase that there is leak current fault mutually, there is leakage current through looking in C phase.
2, after determining the phase line that there is electric leakage, the position of electric leakage is judged.
Method is: at switchboard low-pressure line-outgoing protector switch outgoing line side (as diagram A place); for guaranteeing that safety reduces charging equipment; the leak current fault phase line that exists that will check is stayed on power supply; the neutral line (zero line) and all the other two phase lines are disconnected, steps on bar clamp on amperemeter and detect charged phase line judgement electric leakage position.
For raising the efficiency, stepping on the optional middle part at circuit, bar position (as diagram B place), judging that leaky site is in the first half section of circuit or second half section by detecting, and then to suspecting the part of path detection of leaking electricity.By that analogy, sensing range is reduced.And the user's service conductor phase line be connected within the scope of this in this phase line is detected, with determine leak electricity concrete position, through check in leakage C phase show case entrance line enter to show case place (as diagram C place).
In addition, when power transmission, also can the following service conductor clamp on amperemeter of low-voltage customer table case determined within the scope of suspection be detected.During detection, the phase line of single-phase user and the neutral line will be placed in the jaw of clamp on amperemeter simultaneously, and three phase lines of three-phase electricity user and the neutral line also will be put in jaw simultaneously.If there is no leak current fault, at this moment load current magnetic flux phasor and be zero, clamp on amperemeter instruction be also zero; During if any leakage current, clamp on amperemeter can detect leakage current.
3, check that user's internal wiring and equipment are with or without electric leakage (the electric current side of milliampere level is effective).
Method is: measure leakage current at the power supply house lead in place clamp on amperemeter of this user, the consumer of user, light fixture are dropped into one by one simultaneously and exit, by seeing that equipment and the light fixture of electric leakage are searched in the change of clamp on amperemeter detection leakage current.If all equipment light fixtures are all good, or the equipment that there is electric leakage exits all, but clamp on amperemeter shows this user still there is leakage current, and the low-voltage circuit being exactly likely this user exists electric leakage, should look concrete condition process.For the pre-buried dark pipeline leak current fault applied, the disposal route of thread-changing or rewiring can only be taked.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a fast finding low-voltage circuit leak current fault point apparatus, is characterized in that: it comprises switchboard, master switch, outlet switch, electric energy metering box, secondary protection device, three-level protective device, simulation electric pole, analog line, low-pressure line-outgoing; Simulation electric pole is provided with analog line; one end of analog line is connected with the outlet switch being arranged on switchboard inside by low-pressure line-outgoing; outlet switch is connected with the master switch being arranged on switchboard inside; the inside of electric energy metering box is separately installed with secondary protection device, three-level protective device; secondary protection device is connected with analog line by wire, and three-level protective device is connected with secondary protection device.
2. a kind of fast finding low-voltage circuit leak current fault point apparatus according to claim 1, is characterized in that: described switchboard is the charged switchboard of three-phase four-wire system.
3. a kind of fast finding low-voltage circuit leak current fault point apparatus according to claim 1, is characterized in that: described analog line is 0.4kV, 0.22kV circuit leading to user from low tension switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558768.5A CN105223465A (en) | 2015-09-06 | 2015-09-06 | A kind of fast finding low-voltage circuit leak current fault point apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558768.5A CN105223465A (en) | 2015-09-06 | 2015-09-06 | A kind of fast finding low-voltage circuit leak current fault point apparatus |
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| CN105223465A true CN105223465A (en) | 2016-01-06 |
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| CN201510558768.5A Pending CN105223465A (en) | 2015-09-06 | 2015-09-06 | A kind of fast finding low-voltage circuit leak current fault point apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458889A (en) * | 2018-06-29 | 2018-08-28 | 洛阳视距智能科技有限公司 | A kind of electric inspection process sensing equipment analogue test platform |
| CN110675714A (en) * | 2019-10-18 | 2020-01-10 | 国网四川省电力公司南充供电公司 | Searching training platform and method for simulating low-voltage leakage fault of power distribution system |
-
2015
- 2015-09-06 CN CN201510558768.5A patent/CN105223465A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458889A (en) * | 2018-06-29 | 2018-08-28 | 洛阳视距智能科技有限公司 | A kind of electric inspection process sensing equipment analogue test platform |
| CN108458889B (en) * | 2018-06-29 | 2024-02-20 | 洛阳视距智能科技有限公司 | Electric power inspection sensing equipment simulation test platform |
| CN110675714A (en) * | 2019-10-18 | 2020-01-10 | 国网四川省电力公司南充供电公司 | Searching training platform and method for simulating low-voltage leakage fault of power distribution system |
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Application publication date: 20160106 |