CN105738763A - Low-voltage TT wiring system transformer area electric leakage point positioning method and special-purpose detection tool - Google Patents
Low-voltage TT wiring system transformer area electric leakage point positioning method and special-purpose detection tool Download PDFInfo
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- CN105738763A CN105738763A CN201610087881.4A CN201610087881A CN105738763A CN 105738763 A CN105738763 A CN 105738763A CN 201610087881 A CN201610087881 A CN 201610087881A CN 105738763 A CN105738763 A CN 105738763A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- Locating Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention discloses a low-voltage TT wiring system transformer area electric leakage point positioning method and a special-purpose detection tool. The method is characterized by utilizing the special-purpose detection tool to detect the residual current of the detection points of a distribution line, wherein when the electric leakage is determined to generate in a low voltage transformer area, from a transformer side to a user electric meter box outgoing line and along the current trend of the distribution line, the residue current values of the head end and the tail end of the distribution line are measured segment by segment, so that an electric leakage point is determined to be at the current segment of line or at the next segment of line. The special-purpose detection tool comprises an ampere meter, four forcipate AC probes which are connected in parallel and are connected with the ampere meter electrically, three live wire probes of which the jaws are same and a neutral line probe of which the jaw is larger than the jaws of the live wire probes, and wherein, the neutral line is used alone when the residual current of a cable is detected, and when an overhead line is detected, the four probes are all used. The electric leakage point positioning method of the present invention can check the electric leakage point rapidly under the premise of not influencing the normal power consumption of users.
Description
Technical field
The present invention relates to a kind of low pressure TT wiring system platform district's leakage point of electricity localization method and special detection tool.
Background technology
Because the sound of low-voltage leakage point, light effect are inconspicuous, and low-voltage platform area wiring is complicated, relates to the assets of power supply and user, once there is earth detection difficulty, can only rely on and cut-offfing circuit lookup step by step, searching difficulty, time is long, the personal safety of leakage point of electricity serious threat user.
The mode of low-voltage platform area common cable and aerial line mix and match, leakage point of electricity is searched and is inconvenient for.Preferentially determine the fault section of circuit generally according to line upkeep experience, and for strange low-voltage platform area, it is very painstaking that detection is got up.
Chinese patent literature CN104360236A discloses a kind of 0.4kV overhead transmission line leakage point of electricity quick checking detection complexes and method.First determine which leaks electricity mutually, by this 0.4kV line outage, the neutral conductor stake of the output neutral conductor of this circuit with controller switching equipment is departed from, simulation electric leakage power pack is installed, leak electricity power pack input 220V alternating current by simulation, and close control switches, regulates electric current and makes output electric current be 30mA；Make 0.4kV aerial condutor snap in clamp leakage current table, read the current value measured；Above-mentioned steps is adopted to detect each branch line leakage current situation, if current value is close to 30 milliamperes, so that it may judge that this place is as leakage point of electricity.
The lookup method of above-mentioned leakage point of electricity needs to use simulation electric leakage power supply, and needs power failure, makes troubles to searching work, also affects user's normal electricity consumption simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of low pressure TT wiring system platform district leakage point of electricity localization method, to facilitate the leakage point of electricity of low-voltage platform area, charged location.The present invention also aims to provide the special detection tool of leakage point of electricity location, a kind of low pressure TT wiring system platform district.
nullFor this，According to an aspect of the present invention，Provide a kind of low pressure TT wiring system platform district leakage point of electricity localization method，Utilize the residual current of each test point of special detection tool detection distribution line，Wherein when determining to leak electricity in low-voltage platform area，From transformer side to electric supply meter case outlet、Current trend along distribution line，Measure the head end of distribution line and the residual electricity flow valuve of end piecemeal，Judge that leakage point of electricity is at this section of circuit place accordingly，Still behind in section circuit，Wherein，Special detection tool includes ammeter and four the pincerlike alternating current in parallel probes electrically connected with ammeter，The multiplying power of four pincerlike alternating current in parallel probes is identical，And the center line probe that three the live wire probes identical including jaw size and jaw are popped one's head in big compared with live wire，Wherein，Center line is used alone to pop one's head in when detecting the residual current of cable，When testing stand ceases to be busy，Four probes all use.
Further, in the localization method of the present invention, when judging that leakage point of electricity is when this section of circuit, approaches the head end of this section of circuit from the tip forward of this section of circuit, to shorten faulted line segment, eventually find target leakage point of electricity.
Further, in the localization method of the present invention, determine whether this low-voltage platform area leaks electricity by detecting the residual current of the earth lead of transformator.
Further, the localization method of the present invention also include earth lead residual electricity flow valuve according to the transformator residual electricity flow valuve with faulted line segment whether beyond threshold value to determine whether other branched lines exist leak current fault, if there is leak current fault, continue to search for other branched lines.
Further, in the localization method of the present invention, in measurement process step by step, investigation is to ammeter box place, determines that leakage point of electricity is in ammeter box or at user place by measuring the residual current of user's outlet.
According to a further aspect in the invention, provide a kind of low pressure TT wiring system platform district leakage point of electricity special detection tool, pop one's head in including ammeter and four the pincerlike alternating currents in parallel electrically connected with ammeter, the multiplying power of four pincerlike alternating current in parallel probes is identical, and the center line probe that three the live wire probes identical including jaw size and jaw are popped one's head in big compared with live wire, wherein, center probe uses alone when detecting the residual current of cable.
Further, above-mentioned ammeter is circuit tester.
Further, above-mentioned ammeter is the digital electronic ammeter with data-interface.
Present invention also offers a kind of low pressure TT wiring system platform district leakage point of electricity detection method, utilize the residual current of each test point of above-mentioned special detection tool detection distribution line, further comprising the steps of: the ammeter of special detection tool adopts the digital electronic ammeter with digital interface, and inputs the residual electricity flow valuve of test point to mobile terminal；The residual electricity flow valuve of current detection point collection is compared with the measurement data gathered at front test point, to judge that leakage point of electricity is at this section of circuit place, still behind in section circuit；And mobile terminal is according to the detection of result of determination end of output or the result continuing detection.
Further, above-mentioned low-voltage platform area leakage point of electricity detection method is further comprising the steps of: creates low-voltage platform area distribution line figure and shows on mobile terminals；The measurement data of test point each on distribution line is associated with the relevant position point of distribution line figure；And according to comparative result on distribution line figure to detecting circuit and faulty line carries out distinctive mark.
The leakage point of electricity localization method of the present invention provides the benefit that, it is possible under the premise not affecting client's normal electricity consumption, quickly checks leakage point of electricity.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The Figure of description constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that the special detection tool according to the present invention is for detecting the schematic diagram of the overhead transmission line of low-voltage platform area；
Fig. 2 is the flow chart of an embodiment of the low-voltage platform area distribution line leakage point of electricity localization method according to the present invention；
Fig. 3 is the flow chart of another embodiment of the low-voltage platform area distribution line leakage point of electricity localization method according to the present invention；
Fig. 4 illustrates the lookup example of the low-voltage platform area distribution line leakage point of electricity localization method according to the present invention；
Fig. 5 is the flow chart of another preferred embodiment of the low-voltage platform area distribution line leakage point of electricity localization method according to the present invention；
Fig. 6 is the flow chart of the visual low-voltage platform area distribution line leakage point of electricity localization method according to the present invention；And
Fig. 7 is the block diagram of the visual low-voltage platform area distribution line leakage point of electricity localization method device therefor according to the present invention.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
For making the distribution line including overhead transmission line and cable facilitate the positioning action of leakage point of electricity, the invention provides a kind of special detection tool 10,11,12,13,14 are popped one's head in including ammeter 15 and four the pincerlike alternating currents in parallel electrically connected with ammeter 15, the multiplying power of four pincerlike alternating current in parallel probes is identical, and the center line probe 14 that three the live wire probes 11,12,13 identical including jaw size and jaw are popped one's head in big compared with live wire, wherein, neutral probe 14 when cable detection independently from.
After adopting above-mentioned special detection tool, using alone center line to pop one's head in when detecting the residual current of cable, when testing stand ceases to be busy, four probes all use.The detection of overhead transmission line and cable is all convenient.
For low pressure TT system, adopt four jaw type alternating current probes and circuit tester can realize the detection of low-voltage overhead line road residual current according to the special detection tool of the present invention.
In conjunction with reference to Fig. 1, the initiating terminal of overhead transmission line is transformator 20, and four jaw type alternating current probes vise tetra-wires of A, B, C, N (noting the direction of jaw, it is necessary to equidirectional) of overhead transmission line respectively；Four jaw type alternating current probe outlet same polarities are connected, and form parallel connection.Four jaw types alternating current probe measurement electric current Ia, Ib, Ic, In.The electric current that ammeter A shows is I, then I=Ia+Ib+Ic-In, if jaw type alternating current probe multiplying power is k, then IA=kIa, IB=kIb, IC=kIc, IN=kIn；KI=k (Ia+Ib+Ic-In)=IA+IB+IC-IN=Ij, then the ammeter A show value of k times is the residual current of aerial condutor.
For solving the low-voltage platform area of cable and aerial line mix and match, distribution line leakage point of electricity is inconvenient to the problem searched, and the invention provides a kind of low-voltage platform area charged lookup scheme of leakage point of electricity, except easy-to-look-up, also have and searches quick effect.This quick lookup scheme uses the residual current of special detection tool detection distribution line, when determining to leak electricity in low-voltage platform area, current trend from transformer side to electric supply meter case outlet, along distribution line, measure piecemeal first section of distribution line and end residual electricity flow valuve, judge that leakage point of electricity is at this section of circuit place accordingly, still behind in section circuit.
Wherein, judge that leakage point of electricity includes utilizing beyond threshold value, whether difference therebetween judges that leakage point of electricity is in this section of circuit according to the residual electricity flow valuve of the head end of this section of circuit and end, still behind in section circuit.Structure according to TT earthed system platform district is different, and this threshold value is selected from 0.2～0.5A.If beyond threshold value, then leakage point of electricity in this section of circuit being described, if without departing from threshold value, then it is assumed that this section of circuit is absent from leakage point of electricity, in leakage point of electricity line segment behind.
The charged localization method of low-voltage platform area leakage point of electricity according to the present invention, the special detection tool adopted is all applicable for overhead transmission line and cable, especially with the bigger center line probe tip of jaw to cable, on the one hand the residual circuit current acquisition of overhead transmission line is had not significant impact (current in middle wire of collection is only small becomes insensitive greatly to jaw), on the other hand, the detection that big jaw is especially suitable for the residual current of cable is become.It addition, investigate piecemeal from transformer side to user's outgoing line side, investigate quick and convenient, can the problem of anticipation multiple branch circuit electric leakage, it is achieved looking into of low-voltage platform area leakage point of electricity is complete.
Combine for low-voltage cable below and illustrate with reference to Fig. 2.The localization method of the present invention comprises the following steps:
S11: keep power supply to power；
S12: judge whether this TV station district exists electric leakage.Utilizing the residual current of clamp on amperemeter measuring transformer earth lead, if illustrating more than zero, there is electric leakage in this TV station district, illustrates equal to zero leaky；
S13: start to measure step by step the residual electricity flow valuve of low-voltage cable first and last end from power supply；
S14: judge that leakage point of electricity is in this section of circuit, still behind in section cable；And
If not in this section of circuit, then perform step S16: continue the detection of its back segment circuit.If in this section of circuit, then perform step S15: terminate the detection of its back segment circuit.
If cable head-end residual current is all absent from electric leakage equal to zero this cable of explanation and circuit below；If cable head-end residual current is more than zero, extreme residual electric current illustrates also greater than zero in leakage point of electricity section cable behind, and extreme residual electric current illustrates that equal to zero leakage point of electricity is at this cable.
In measurement process step by step, investigation is to ammeter box place, leakage point of electricity can be determined by the residual current of measurement user's outlet, if user's outlet residual current is equal to zero explanation leakage point of electricity in ammeter box, if the residual current of the outlet of certain user illustrates that more than zero leakage point of electricity is located user, excising by disconnecting the outlet switch of this user, leaky will disappear.
The present invention gives and approaches the localization method searching leakage point of electricity, when judging that leakage point of electricity is when this section of circuit, approaches lookup from the end of this section of circuit to the head end of this section of circuit, and then reduces the length of faulted line segment, in order to eventually find leakage point of electricity.Approach and a little may select in the golden section point of faulted line segment, it is possible to select the feature locations that takes place frequently in leakage point of electricity, for instance the positions such as shaft tower, cable branch box, ammeter box, user's outlet.
The present invention gives the investigation means of many leakage point of electricity, to find more hidden leakage point of electricity.In conjunction with reference to Fig. 3, on the basis of handling process shown in Fig. 2, also include judging step S17: whether the difference of the residual electricity flow valuve of the residual current of the earth lead of transformator and faulted line segment is beyond threshold value, when the residual current of earth lead of transformator differs with the residual electricity flow valuve of faulted line segment, then judge that other branched lines there is also leak current fault, and perform step S19: continue to search for other branched lines, repetitive cycling above step.If identical, then stop detection.
Structure according to TT earthed system platform district is different, and this threshold value is selected from 0.2～0.5A.
Below in conjunction with Fig. 4 introduction operational instances according to the localization method of the present invention.
Assume No. 2 cable d place c phase broken skins, the path of electric leakage residual current: the d point of first section → No. 2 cables of c phase conductor → cable branch box → No. 2 cable of transformator c phase → No. 1 cable → greatly → transformer grounding pole → return to transformator c phase.
No. 1 cable first and last end residual current is Inc, and the head end residual current of No. 2 cables is Inc, and the extreme residual electric current of No. 2 cables is 0；No. 3 cable first and last end residual currents are 0.
Figure 4, it is seen that when electric leakage occurs certain section of cable, the head end of this cable has residual current In, extreme residual electric current to be 0；Before it, cable first and end all has residual current In；The first and last end residual current of cable is 0 behind.In a Ge Tai district, start to measure residual current In from power supply, along the flow direction of In, it is possible to quickly find leakage point of electricity.Concrete measuring process is as follows:
The first step: measuring transformer earth lead residual current In, it is judged that platform district exists electric leakage and is likely to.
Second step: measuring the residual current of A cable first and end, measured value is In, it is judged that A section cable is normal, has leakage point of electricity in its back segment circuit.
3rd step: measure the residual electricity flow valuve respectively In of B, J cable head, 0, then the extreme residual current value measuring B cable is In.Illustrating that B section cable is normal, have leakage point of electricity in its back segment circuit, J section cable and back segment circuit do not leak electricity.
4th step: measure the residual electricity flow valuve of C, D cable head respectively 0, In, then the extreme residual current value measuring D cable is In.Illustrate that D section cable is normal, the circuit of its rear end has leakage point of electricity；Not electric leakage in C section cable and back segment circuit thereof.
5th step: measure the residual electricity flow valuve of E, F cable head respectively 0, In, then the extreme residual current value measuring F cable is In.Illustrate that F section cable is normal, its back segment circuit has leakage point of electricity；Not electric leakage in E section cable and back segment circuit thereof.
6th step: measure the residual electricity flow valuve of H, G cable head respectively 0, In.The extreme residual current value measuring H cable again is In.Illustrate that H section cable is normal, its back segment circuit has leakage point of electricity；Not electric leakage in G section cable and back segment circuit thereof.
7th step: the residual current In of measurement table case 3 inlet cable, then measure the residual current respectively In of user's A, B outlet head end, 0.Illustrate there is leakage point of electricity in ammeter box 3 or in institute's on-load；Leakage point of electricity is located party A-subscriber, and party B-subscriber is not leaked electricity.
8th step: pull open the outlet switch of user A in table case, grounding phenomenon disappears.
The present invention check time, but as ammeter has reading numerical value less than 0.1mA, it is believed that 0, it does not have leakage current.
The present invention gives a kind of leakage point of electricity localization method participated in by mobile terminal, is particluarly suitable for the complicated low-voltage platform area of distribution line and uses, it is not necessary to other people assist.In conjunction with reference to Fig. 5, this leakage point of electricity localization method comprises the following steps: ammeter adopts the digital electronic ammeter with digital interface, provides the step S22 of the detection data including residual current to mobile terminal；The detection data currently gathered and preceding detection data are compared, and judges that leakage point of electricity is at this section of circuit place accordingly, still the step S24 in section circuit behind；Mobile terminal performs step S25 according to result of determination: the message of end of output detection；Or perform the message that step S27 output resume detects, repeat above step.
After adopting such scheme, adopting mobile terminal to coordinate the localization method performing the present invention, working performance can be made to be greatly improved, operating process controllability strengthens.
Present invention also offers a kind of visual leakage point of electricity lookup scheme, in conjunction with reference to Fig. 6, comprising the following steps:
Create low-voltage platform area distribution line figure and the step S21 shown on mobile terminals；
For the distribution line figure created, formulate the step S29 of measurement scheme；
With digital electronic ammeter, test point is detected, and the step S22 of the detection data of residual current is provided to mobile terminal；
The step S23 that test point each on distribution line and residual current thereof are associated with the relevant position point of distribution line figure；
The detection data currently gathered and preceding detection data are compared, to judge the leakage point of electricity whether step S24 in this section；
If so, step S25 is then performed: output stops the information of detection；And perform the step S26 at distribution line chart display faulted line segment；If it is not, then perform step S27: the information of output resume detection, and perform to have detected the step S28 of non-faulting line segment, repetitive cycling above-mentioned steps afterwards at distribution line chart display.
Wherein, the optional mode creating distribution figure is as follows: 1, create in real time on mobile terminals；2, the distribution line figure created outside imports in mobile terminal.
Wherein, the formulation of measurement scheme includes dividing measurement section, planning survey point, measuring sequence etc..For complicated distribution line figure, efficiency very interests are measured to improving in planning survey section.Certainly for generally uncomplicated district, only planning survey point and measuring sequence.
In conjunction with reference to Fig. 7, special detection tool 10 and mobile terminal 20 signal connect, special detection tool 10 is for being supplied to mobile terminal 20 by detection data, the screen of mobile terminal 20 shows distribution line Figure 21, and on distribution line Figure 21, plans 6 test point P1, P2, P3, P4, P5 and P6.By detecting the electric current Ij3 of electric current Ij2, the P3 point of electric current Ij1, the P2 point of P1 point, the electric current Ij4 of P4 point, by judging, circuit 1 fault-free, this is carried out labelling, also fault-free between P2 and P3 point, this is carried out labelling (such as green), between P3 and P4 point, has fault, this is carried out distinguishing mark (such as red), P5 and P6 is without in detection, may select not labelling.
After adopting above-mentioned flow process, achieve visualization operation, create low-voltage platform area distribution line figure to retain and check, and same low-voltage platform area also can be searched with sharing out the work and helping one another, reach the purpose of quick investigation, burst district investigation, especially suitable particularly with complicated distribution line, it is not necessary to from transformer side to the lookup piecemeal of user side, flexibly and easily.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. low pressure TT wiring system platform district leakage point of electricity localization method, it is characterised in that utilize the residual current of each test point of special detection tool detection distribution line, wherein
When determining to leak electricity in low-voltage platform area, the current trend from transformer side to electric supply meter case outlet, along distribution line, measure the head end of distribution line and the residual electricity flow valuve of end piecemeal, judge that leakage point of electricity is at this section of circuit place accordingly, still behind in section circuit,
Wherein, described special detection tool includes ammeter and four the pincerlike alternating current in parallel probes electrically connected with described ammeter, the multiplying power of described four pincerlike alternating currents in parallel probe is identical, and the center line probe that three the live wire probes identical including jaw size and jaw are popped one's head in big compared with live wire, wherein, using alone center line to pop one's head in when detecting the residual current of cable, when testing stand ceases to be busy, four probes all use.
2. low pressure TT wiring system platform district according to claim 1 leakage point of electricity localization method, it is characterised in that described when judging that leakage point of electricity is when this section of circuit, approaches the head end of described section circuit from the tip forward of this section of circuit, to shorten faulted line segment.
3. low pressure TT wiring system platform district according to claim 1 leakage point of electricity localization method, it is characterised in that determine whether this low-voltage platform area leaks electricity by detecting the residual current of the earth lead of transformator.
4. low pressure TT wiring system platform district according to claim 3 leakage point of electricity localization method, it is characterized in that, whether also include the difference of residual electricity flow valuve of the earth lead residual electricity flow valuve according to transformator and faulted line segment beyond threshold value, to determine whether other branched lines exist leak current fault, if there is leak current fault, continue to search for other branched lines.
5. by measuring the residual current of user's outlet, low pressure TT wiring system platform district according to claim 1 leakage point of electricity localization method, it is characterised in that investigation is to ammeter box place in measurement process step by step, determines that leakage point of electricity is in ammeter box or at user place.
6. a low pressure TT wiring system platform district leakage point of electricity special detection tool, it is characterized in that, pop one's head in including ammeter and four the pincerlike alternating currents in parallel electrically connected with described ammeter, the multiplying power of described four pincerlike alternating currents in parallel probe is identical, and the center line probe that three the live wire probes identical including jaw size and jaw are popped one's head in big compared with live wire, wherein, described center probe uses alone when detecting the residual current of cable.
7. low pressure TT wiring system platform district according to claim 6 leakage point of electricity special detection tool, it is characterised in that described ammeter is circuit tester.
8. low pressure TT wiring system platform district according to claim 6 leakage point of electricity special detection tool, it is characterised in that described ammeter is the digital electronic ammeter with data-interface.
9. a low pressure TT wiring system platform district leakage point of electricity localization method, it is characterised in that utilize the residual current of each test point of special detection tool according to claim 8 detection distribution line, further comprising the steps of:
The ammeter of described special detection tool adopts the digital electronic ammeter with digital interface, and inputs the residual electricity flow valuve of test point to mobile terminal；
To the measurement data of current detection point collection with adjacent at front test point or the adjacent measurement data gathered at rear test point compare, to judge that leakage point of electricity is at this section of circuit place, still behind in section circuit；And
Described mobile terminal is according to the detection of result of determination end of output or the result continuing detection.
10. low pressure TT wiring system platform district according to claim 9 leakage point of electricity localization method, it is characterised in that further comprising the steps of:
Create low-voltage platform area distribution line figure and show on the mobile terminal；
The measurement data of test point each on distribution line is associated with the relevant position point of distribution line figure；And
According to comparative result on distribution line figure to detecting circuit and faulty line carries out distinctive mark.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462214A (en) * | 2018-01-31 | 2019-03-12 | 国网浙江省电力公司湖州供电公司 | A kind of residual current transfinites failure segmentation investigation method |
| CN109932609A (en) * | 2019-03-05 | 2019-06-25 | 国网浙江诸暨市供电有限公司 | Rural area low-voltage power supply platform area failure leakage current measuring tool |
| CN110780129A (en) * | 2019-10-17 | 2020-02-11 | 国网吉林省电力有限公司电力科学研究院 | Electricity stealing and leakage positioning method based on current deviation analysis technology |
| CN111007315A (en) * | 2019-11-26 | 2020-04-14 | 武汉大学 | Circuit branch identification method based on current harmonic spectrum |
| CN113466613A (en) * | 2021-06-07 | 2021-10-01 | 国网山东省电力公司淄博供电公司 | Method for searching leakage fault point by using bypass current of neutral line of low-voltage power supply line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227272A (en) * | 1988-07-18 | 1990-01-30 | Kyushu Electric Power Co Inc | Apparatus for detecting earth of transmission/ distribution line |
| KR101303732B1 (en) * | 2012-06-14 | 2013-09-04 | 한국 전기안전공사 | A simulator for a low-voltage wiring system |
| CN103809060A (en) * | 2012-11-05 | 2014-05-21 | 无锡赛克特信息科技有限公司 | Data collection terminal and station area low-voltage zero line current leakage detection system using the same |
| CN103926501A (en) * | 2014-04-23 | 2014-07-16 | 国家电网公司 | Pull rod type low-voltage line electric leakage fault detector |
| CN105242168A (en) * | 2015-10-29 | 2016-01-13 | 国网浙江省电力公司绍兴供电公司 | Split type leakage current acquisition system |
-
2016
- 2016-02-16 CN CN201610087881.4A patent/CN105738763B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227272A (en) * | 1988-07-18 | 1990-01-30 | Kyushu Electric Power Co Inc | Apparatus for detecting earth of transmission/ distribution line |
| KR101303732B1 (en) * | 2012-06-14 | 2013-09-04 | 한국 전기안전공사 | A simulator for a low-voltage wiring system |
| CN103809060A (en) * | 2012-11-05 | 2014-05-21 | 无锡赛克特信息科技有限公司 | Data collection terminal and station area low-voltage zero line current leakage detection system using the same |
| CN103926501A (en) * | 2014-04-23 | 2014-07-16 | 国家电网公司 | Pull rod type low-voltage line electric leakage fault detector |
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