CN102608484A - Fault indictor for power distribution lines - Google Patents
Fault indictor for power distribution lines Download PDFInfo
- Publication number
- CN102608484A CN102608484A CN2012100665913A CN201210066591A CN102608484A CN 102608484 A CN102608484 A CN 102608484A CN 2012100665913 A CN2012100665913 A CN 2012100665913A CN 201210066591 A CN201210066591 A CN 201210066591A CN 102608484 A CN102608484 A CN 102608484A
- Authority
- CN
- China
- Prior art keywords
- fault
- voltage
- state component
- detects
- current value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a fault indicator for power distribution lines, which comprises a fault determination system. The fault determination system comprises a current detector, a voltage detector and a first controller, wherein the current detector is used for detecting current of power distribution lines by means of mutual inductance, the voltage detector is used for detecting voltage of the power distribution lines, the first controller determines whether single-phase grounding fault exists or not according to variation of transient component of detected current, drop proportion of steady component of the detected current and drop proportion of the transient component of detected voltage.
Description
Technical field
The invention belongs to distribution line safe operation guarantee and FLT field, relate in particular to a kind of fault detector that is used for distribution line.
Background technology
When distribution line generation singlephase earth fault or phase fault, in order to restore electricity as early as possible, must find the trouble spot as early as possible, therefore fault detector is installed, with the position of confirming to break down on the distribution line on distribution line.When line failure, through detecting electric current, voltage jump amount, use various criterions, the failure judgement state, and show failure message, thus reach the purpose of localization of fault, shortened the line maintenance time, improved power supply reliability.It is not accurate enough that but the fault judgment method of existing fault indicator is judged for singlephase earth fault, often causes malfunction or tripping for singlephase earth fault.
In addition, the electric system distribution line gos deep into load center, and complex structure distributes extensively, and running environment is abominable.Especially, nest and birds ight soil on the online bar of birds, possibly cause circuit generation singlephase earth fault, even phase fault takes place, so birds are to influence one of line security operation key factor.But according to relevant rules, birds can not be killed again, can only drive.The bird mode of driving at present commonly used has high frequency sound, high light, ultrasound wave etc., stimulates the birds nervous organ, and make it be difficult to bear and leave away, and its life of unlikely injury, thereby guarantee the circuit security of operation.
In addition; In the fault detector of prior art, accomplish in case make, just the enclosure interior with fault detector encapsulates; Therefore can't revise the protection parameter of fault detector; This defines fixing use occasion, in case and the energy content of battery of fault detector exhausts or internal circuit breaks down, and fault detector can only be scrapped.
Summary of the invention
In view of the problems referred to above that exist in the prior art, need to judge more reliably the fault detector of singlephase earth fault.In addition, need a kind of fault detector that can judge phase fault more reliably.
In addition, need a kind of fault detector that drives the bird function that has.
In addition, need a kind of fault detector of being convenient to safeguard.
A kind of according to an exemplary embodiment of the present invention fault detector that is used for distribution line, said fault detector comprises the fault recognition system, said fault recognition system comprises: current detector, detect the electric current of distribution line; Voltage-level detector, the voltage of detection distribution line; First controller determines whether to have produced singlephase earth fault according to the steady-state component of the magnitude of voltage of the steady-state component of the current value of the transient state component of the current value that detects, detection, detection.
In addition, said first controller comprises: first comparer compares the variation and the scheduled current changing value of the transient state component of the current value that detects; Second comparer compares the decline ratio and the predetermined voltage decline ratio value of the steady-state component of the magnitude of voltage that detects; The 3rd comparer confirms whether the steady-state component of the current value of detection changes; Timer carries out timing to the decline ratio of the magnitude of voltage that detects greater than the time of predetermined voltage decline ratio value; Fault is confirmed the unit; When the variation of the transient state component of the electric current that detects greater than the scheduled current changing value; The decline ratio of the steady-state component of the voltage that detects is greater than the predetermined voltage ratio value that descends; The steady-state component of the electric current that detects does not change, and the decline ratio of the magnitude of voltage that detects during greater than first schedule time, confirms to have produced singlephase earth fault greater than time of predetermined voltage decline ratio value.
In addition, said first controller determines whether to have produced phase fault based on the transient state component of the electric current that detects.
In addition, said first controller comprises: the 4th comparer compares the transient state component and the predetermined current value of electric current; Timer carries out timing to the transient state component of the current value that detects greater than the time of predetermined current value; Fault is confirmed the unit, when the transient state component of the current value that detects greater than the time remaining of predetermined current value after second schedule time, the electric current of detection and voltage all become when zero, confirm to have produced phase fault.
In addition, said fault recognition system also comprises: alarm unit when fault confirms that singlephase earth fault and/or phase fault are confirmed to have taken place in the unit, sends a warning.
In addition, said alarm unit sends a warning through flashing and warning information is sent to the pulpit of being responsible for the distribution line maintenance through wireless mode.
In addition, said fault recognition system also comprises: first signal processor is used for the current value that detects is carried out the steady-state component that LPF produces electric current; The secondary signal processor is used for the current value that detects is carried out the transient state component that high-pass filtering produces electric current; The 3rd signal processor is used for the magnitude of voltage that detects is carried out the steady-state component that LPF produces voltage.
In addition, said fault detector also comprises: the bird-repeller system that is used to disperse birds.
In addition, said bird-repeller system comprises: second controller; A plurality of illuminators unit, luminous by predetermined time-slot sequence ground under the control of second controller; The ultrasonic wave transducer unit issues the excess of export sound in the control of second controller.
In addition, the fault recognition system also comprises: a plurality of illuminators unit, and luminous by predetermined time-slot sequence ground under the control of first controller; The ultrasonic wave transducer unit issues the excess of export sound in the control of first controller.
In addition, send the sound of 12kHz to 25kHz under the ultrasonic wave transducer unit with the frequency interval of 1kHz, wherein, predetermined time slot is 400 milliseconds, and the luminous time of each illuminator unit is 100 milliseconds.
In addition; Said fault detector; Also comprise: the housing of said fault recognition system or fault recognition system and bird-repeller system is installed, and wherein, said housing comprises the upper shell of cylindrical structure and the lower house of the cylindrical structure that removably combines with said upper shell.
In addition, said upper shell is the opaque polyester material, and said lower house is the transparent polyester material.
In addition, the top of said upper shell is provided with the anchor clamps of the lead that is used to install said distribution line.
In addition, said anchor clamps are provided with the solar panels fixture, and said solar panels fixture is provided with the solar panels that rotate along surface level.
In addition, said indicator also comprises: charging management system is used to store the voltage of solar panels output and supplies power with bird-repeller system to the fault recognition system.
Fault detector more reliable and stable detects the short trouble such as singlephase earth fault and phase fault according to an exemplary embodiment of the present invention, and can prevent that the erroneous judgement of short trouble is disconnected.
In addition, fault detector also has the function of dispersing birds according to an exemplary embodiment of the present invention, thereby can prevent the influence of birds to distribution line equipment.
In addition, fault detector has separable upper shell and lower house according to an exemplary embodiment of the present invention, therefore, is convenient to safeguard.
Description of drawings
Fig. 1 illustrates the block diagram of the fault detector that is used for distribution line according to an exemplary embodiment of the present invention.
Fig. 2 illustrates the fault recognition system that is used for distribution line according to an exemplary embodiment of the present invention.
Fig. 3 illustrates the fault recognition system that is used for distribution line according to another exemplary embodiment of the present invention.
Fig. 4 illustrates bird-repeller system according to an exemplary embodiment of the present invention.
Flash of light output waveform and ultrasound wave output waveform when Fig. 5 and Fig. 6 illustrate bird-repeller system work according to an exemplary embodiment of the present invention respectively.
Fig. 7 illustrates the structure of the housing that is installed to distribution line of fault detector according to an exemplary embodiment of the present invention.
Fig. 8 and Fig. 9 illustrate upper shell and the synoptic diagram of lower house of the housing of fault detector respectively.
Figure 10 to Figure 12 is used to explain fault detector is installed to distribution line and from the diagrammatic sketch of the process of distribution line unloading fault detector.
Figure 13 illustrates the charging management system of fault detector according to an exemplary embodiment of the present invention.
Embodiment
Now the embodiment of the invention is carried out detailed description, its example shown in the accompanying drawings, wherein, identical label is represented same parts all the time.Below through embodiment being described to explain the present invention with reference to accompanying drawing.
Fig. 1 illustrates the fault detector that is used for distribution line according to an exemplary embodiment of the present invention.
With reference to Fig. 1, the fault detector that is used for distribution line according to an exemplary embodiment of the present invention comprises the fault recognition system and the bird-repeller system that is used to disperse birds of the fault (for example, phase fault and singlephase earth fault) that is used for definite distribution line.
Specifically, comprise according to the fault recognition system of the fault detector of the embodiment of the invention: current detector 110, detect the electric current (for example, detecting electric current through the mutual inductance mode) of distribution line; Voltage-level detector 120, the voltage of detection distribution line; First signal processor 131 is used for the current value that detects is carried out the steady-state component that LPF produces electric current; Secondary signal processor 132 is used for the current value that detects is carried out the transient state component that high-pass filtering produces electric current; The 3rd signal processor 133 is used for the magnitude of voltage that detects is carried out the steady-state component that LPF produces voltage; First controller 140 confirms whether to have produced singlephase earth fault according to the steady-state component of the voltage of the steady-state component of the electric current of the transient state component of the electric current that detects, detection and detection.
Preferably; Electric current during for fear of start, the wrong report that change in voltage causes; First controller 140 can after said fault detector is started working, pass by after first stabilization time (for example, the past period after the electric current of said detection and/or voltage reach steady current and/or burning voltage, for example; 30 seconds), determine whether to have produced fault.
Below, explain according to fault recognition of the present invention system with reference to Fig. 2 and Fig. 3.
Fig. 2 illustrates fault recognition system according to an exemplary embodiment of the present invention.With reference to Fig. 2, fault recognition system 200 comprises according to an exemplary embodiment of the present invention: current detector 210, the electric current of detection distribution line; Voltage-level detector 220, the voltage of detection distribution line; First signal processor 231 is used for the current value that detects is carried out the steady-state component that LPF produces electric current; Secondary signal processor 232 is used for the current value that detects is carried out the transient state component that high-pass filtering produces electric current; The 3rd signal processor 233 is used for the magnitude of voltage that detects is carried out the steady-state component that LPF produces voltage; First comparer 241 compares the variation and the scheduled current changing value of the transient state component of the electric current that detects; Second comparer 242 compares the decline ratio and the predetermined voltage decline ratio value (for example, 30%) of the steady-state component of the voltage that detects; The 3rd comparer 243 confirms whether the steady-state component of the electric current of detection changes; The 4th comparer 244 (for example, 400A) compares the transient state component and the predetermined current value of electric current; Timer 250 carries out timing to the decline ratio of the voltage that detects greater than the time of predetermined voltage decline ratio value; Fault is confirmed unit 260, is used to confirm singlephase earth fault and phase fault; Alarm unit 270.
In example shown in Figure 2, but first comparer 241, second comparer 242, the 3rd comparer 243, the 4th comparer 244, timer 250 and fault are confirmed first controller 140 in unit 260 pie graphs 1.
Here; When the variation of the transient state component of the current value that detects greater than the scheduled current changing value; The decline ratio of the steady-state component of the magnitude of voltage that detects is greater than the predetermined voltage ratio value that descends; The steady-state component of the current value that detects not have to change and the decline ratio of the magnitude of voltage of detection greater than the time remaining of predetermined voltage decline ratio value during greater than first schedule time (for example, 60 seconds), fault confirms that unit 260 can confirm to have produced singlephase earth fault.
In addition, when the transient state component of the current value that detects greater than second schedule time of time remaining (for example, 200 milliseconds) of predetermined current value afterwards, detect electric current and voltage and all become when zero, fault confirms that unit 260 confirms to have produced phase fault.
When fault confirmed that singlephase earth fault and/or phase fault are confirmed to have taken place in unit 260, alarm unit 270 can send a warning.For example, said alarm unit 270 is responsible for the pulpit that distribution line is safeguarded through sending red flash of light and send a warning and through wireless mode warning information being sent to.
Fig. 3 illustrates the fault recognition system of another exemplary embodiment according to the present invention.With reference to Fig. 3, the fault recognition system 300 of another exemplary embodiment can comprise according to the present invention: current detector 310, the electric current of detection distribution line; Voltage-level detector 320, the voltage of detection distribution line; First signal processor 331 is used for the current value that detects is carried out the steady-state component that LPF produces electric current; Secondary signal processor 332 is used for the current value that detects is carried out the transient state component that high-pass filtering produces electric current; The 3rd signal processor 333 is used for the magnitude of voltage that detects is carried out the steady-state component that LPF produces voltage; Microprocessor 360 (for example, but being not limited to single-chip microcomputer) is used to confirm singlephase earth fault and phase fault; Alarm unit 370 with alarm 371 and wireless transport module 372.
In the example depicted in fig. 3, microprocessor 360 can constitute first controller 140 shown in Figure 1.
In the fault recognition system 300 of another exemplary embodiment according to the present invention; Microprocessor 360 compares the variation and the scheduled current changing value of the transient state component of the current value that detects; Decline ratio and the predetermined voltage decline ratio value of the transient state component of the magnitude of voltage that detects are compared, and whether the steady-state component of the current value of confirming to detect changes and the decline ratio of the voltage of detection is carried out timing greater than the time of voltage decline ratio.Simultaneously; When the variation of the transient state component of the current value that detects greater than the scheduled current changing value; The decline ratio of the steady-state component of the magnitude of voltage that detects is greater than the predetermined voltage ratio value that descends; The steady-state component of the current value that detects not have to change and the decline ratio of the magnitude of voltage of detection greater than time of predetermined voltage decline ratio value during greater than first schedule time, fault confirms that unit 360 confirms to have produced singlephase earth fault.
In addition, in the fault recognition system 300 of another exemplary embodiment according to the present invention, microprocessor 360 is with the transient state component of current value and predetermined current value compares and the transient state component of current value is carried out timing greater than the time of predetermined current value.When at the transient state component of current value greater than the time remaining of predetermined current value after second schedule time, when the electric current of detection and voltage all became zero, said microprocessor 360 confirmed to have taken place phase fault.
When distribution line generation singlephase earth fault; Distribution line (for example generally allows to continue the operation certain hour; 24 hours); Therefore the load current (steady-state component of electric current) in the distribution line can not change, but transient state component can suddenly change, and phase voltage is also with greater than certain proportion (for example; Predetermined voltage decline ratio value) descend and this decline is wanted more than the certain time, fault detector can be judged and whether singlephase earth fault take place in the distribution line and according to judged result warning information is provided thus.
In addition; When circuit generation phase fault; Current break and surpass certain value in the circuit, and the electric current of circuit surpasses after the state continuance certain hour of said certain value, substation relay protection action launching make circuit breaker trip; Thereby the voltage of distribution line, the equal vanishing of electric current, fault detector can be judged and phase fault whether occur and send warning message according to judged result thus.
When for example no-load transformer drops into, because the influence that transformer excitation shoves, the electric current of distribution line and/or current break, fault detector possibly thought short trouble (for example, singlephase earth fault and/or phase fault) has taken place thus.But, electric current that is detected and/voltage reach stable after, detect electric current, begin when voltage is non-vanishing to judge, the maloperation that can prevent that therefore the erroneous judgement of fault detector is disconnected and cause thus.
Fig. 4 illustrates bird-repeller system according to an exemplary embodiment of the present invention.With reference to Fig. 4, bird-repeller system can comprise according to an exemplary embodiment of the present invention: second controller 410 (for example, single-chip microcomputer); Illuminator 421, luminous under the control of second controller; Ultrasonic transducer 430 issues the excess of export sound in the control of second controller 410.Show bird-repeller system for the ease of description among Fig. 4 and only comprise an illuminator; But bird-repeller system can a plurality of illuminators according to an exemplary embodiment of the present invention, and said a plurality of illuminators are sequentially luminous by predetermined timeslot number under the control of second controller 410.
Here; As Fig. 5 of flash of light output waveform the when work of bird-repeller system according to an exemplary embodiment of the present invention is shown respectively and ultrasound wave output waveform and shown in Figure 6; Ultrasonic transducer 430 sends the sound of 12kHz to 25kHz with the frequency interval of 1kHz under the control of second controller 410; Wherein, predetermined time slot is 400 milliseconds, and the luminous time of each illuminator unit is 100 milliseconds.
When near birds are dropped on line insulator or on the insulator cross-arm, nesting, just possibly impact the line security operation.Fault detector is installed on the power transmission line near the line bar, involves brightness owing to the acoustic pressure that can send 100dB is ultrasonic and reach the above flash of light of 10000 candelas, make birds be difficult to adapt to, have to leave away, thereby have the effect of dispersing birds.
Though among the embodiment that describes in the above; Disperse the function of birds and undertaken, but according to another exemplary embodiment of the present invention, said function of dispersing birds can be carried out by the fault recognition system by bird-repeller system; Promptly; The fault recognition system comprises a plurality of illuminators unit and ultrasonic transducer, thereby under the control of first controller, said fault recognition system carries out through illuminator unit and ultrasonic transducer and drives the bird function.
Below, in conjunction with Fig. 7 the housing of fault detector is according to an exemplary embodiment of the present invention described.As shown in Figure 7, the housing of fault detector can comprise the upper shell 710 of cylindrical structure and the lower house 720 that removably is connected the cylindrical structure of (for example, through being threaded) with said upper shell 710 according to an exemplary embodiment of the present invention.
Like Fig. 8 and shown in Figure 9, be formed with internal thread 710A in the bottom of upper shell 710, and be formed with external thread 720A, so upper shell 710 can closely be connected through being threaded with lower house 720 on the top of lower house 720.
Preferably, said upper shell 710 is the opaque polyester material, and said lower house 720 is the transparent polyester material, thereby in said lower house 720, illuminator 421 to 423 and/or ultrasonic transducer 430 shown in Figure 4 is installed.
In addition, also be formed with the holder part of the lead that is used to install distribution line at the top of said upper shell.Below, specify said holder part and based on the process of the lead on road under this holder part dismounting distribution.
Be formed with the V-type groove 730 of the lead L that is used to place said distribution line at the top of said upper shell 510.Two ends at the said V-type groove 730 on the top of said upper shell 710 are respectively arranged with first column 741 and second column 742.
In addition, the housing of fault detector also comprises according to an exemplary embodiment of the present invention: the U type is bent part dwang 750, the curved part 760 of U type, tension disc dwang 770, tension disc 780.Specifically, the curved part dwang 750 of U type is attached to the end (that is upper end) of second column 742 and can rotates around the end of second column 742.The curved part 760 of U type is attached to the curved part dwang 750 of U type, thereby the curved part 760 of U type can rotate for example 90 ° with respect to second column 742 through the curved part dwang 750 of U type.Tension disc dwang 770 is arranged on a side that is provided with first column 741 of V-type groove 730.Tension disc 780 rotatably is attached to tension disc dwang 770, thereby tension disc 780 can turn an angle through tension disc dwang 770 (for example, about 120 °).Here, tension disc 780 can be pressed to the lead L of said distribution line said V-type groove 730 and when lead L was pressed to said V-type groove 730, the curved part 760 of said U type closely contacted with second column 742 with said first column 741.
In addition, be formed with the installation hook H that uses when fault detector is installed to distribution line in the bottom of lower house 720.
For the fault recognition system and the bird-repeller system power supply of giving fault detector, fault detector also can comprise the solar panels 791 that receive sun power according to an exemplary embodiment of the present invention.For this reason, be provided with solar panels fixture 792 on the top of the curved part 760 of said U type, so that said solar panels 791 are arranged on the said solar panels fixture 792.
Preferably, said solar panels 591 rotatably are set on the sun power fixture 792, thereby guarantee solar panels 791 towards south, to guarantee to obtain maximum transfer power.
In addition, said fault detector also can comprise like figure being used to shown in the X and stores the voltage of solar panels output and the charging management system (shown in figure 13) of supplying power to fault recognition system and bird-repeller system.
As stated when fault detector installs; The curved part 760 of U-shaped forms magnetic circuit with first column 741 with second column, 742 tight contacts, thus the mutual inductance of magnetic field through the electric current generation in the lead L of distribution line, flow through and said magnetic circuit be used for detecting distribution line lead L in the electric current that flows through.This only is an example, can also adopt other method as known in the art to detect the electric current of distribution line.
The voltage of distribution line can be through the detecting of capacitance type sensor (as Fig. 2 and voltage- level detector 220 and 320 shown in Figure 3), thereby can avoid the influence of air humidity to measuring accuracy.Said capacitance type sensor can be built in the inside position near V-type groove 730 of upper shell (for example) of fault detector.
Below, explain with reference to Figure 10 to Figure 12 fault detector is installed to distribution line and from the process of distribution line unloading fault detector.
Before fault detector was installed to distribution line, its each position component was shown in figure 10.When fault detector is installed to distribution line; The curved part of U type 760 edges are clockwise rotated; Tension disc 780 rotates counterclockwise, and the curved part 760 of U-shaped is supported on tension disc 780 and becomes about 90 ° position with surface level, and the lead L of distribution line is positioned at V-shaped groove 730 tops; Promptly be positioned at curved part 760 inside of U type, shown in figure 11.By means of erecting tools; Below the lower house of fault detector, apply power F upwards through hook is installed, the curved part 760 of U-shaped this moment will receive the downward thrust of lead L, thereby rotate counterclockwise; Lead L gets into V-shaped groove 730; Tension disc 780 clockwise rotates simultaneously, and L compresses with lead, thereby accomplishes fitting operation.
For fault detector is unloaded from distribution line; By means of erecting tools, below the shell body 720 of fault detector, apply downward power F (shown in figure 12), this moment, lead L applied thrust upwards to the curved part 760 of tension disc 780 and U-shaped; The curved part 760 of U-shaped clockwise rotates; Tension disc 780 rotates counterclockwise, and lead L hauls out in V-type groove 730, thereby accomplishes the unloading operation of fault detector.
Though described the holder part of fault detector above according to specific embodiment, the anchor clamps of fault detector are not limited to the above embodiments.Can comprise also in this area that commonly used being used to dismantle the anchor clamps of other form of lead.
Fault detector more reliable and stable detects the short trouble such as singlephase earth fault and phase fault according to an exemplary embodiment of the present invention, and can prevent that the erroneous judgement of short trouble is disconnected.
In addition, fault detector also has the function of dispersing birds according to an exemplary embodiment of the present invention, thereby can prevent the influence of birds to distribution line equipment.
In addition, fault detector has separable upper shell and lower house according to an exemplary embodiment of the present invention, therefore, is convenient to safeguard.
Though represented and described some embodiments of the present invention, it should be appreciated by those skilled in the art that under the situation that does not break away from the principle of the present invention that limits its scope claim and equivalent thereof and spirit, can make amendment to these embodiment.
Claims (16)
1. the fault detector of a distribution line, said fault detector comprises the fault recognition system, it is characterized in that, said fault recognition system comprises:
Current detector, the electric current of detection distribution line;
Voltage-level detector, the voltage of detection distribution line;
First controller determines whether to have produced singlephase earth fault according to the steady-state component of the magnitude of voltage of the steady-state component of the current value of the transient state component of the current value that detects, detection, detection.
2. fault detector according to claim 1 is characterized in that, said first controller comprises:
First comparer compares the variation and the scheduled current changing value of the transient state component of the current value that detects;
Second comparer compares the decline ratio and the predetermined voltage decline ratio value of the steady-state component of the magnitude of voltage that detects;
The 3rd comparer confirms whether the steady-state component of the current value of detection changes;
Timer carries out timing to the decline ratio of the magnitude of voltage that detects greater than the time of predetermined voltage decline ratio value;
Fault is confirmed the unit; When the variation of the transient state component of the electric current that detects greater than the scheduled current changing value; The decline ratio of the steady-state component of the voltage that detects is greater than the predetermined voltage ratio value that descends; The steady-state component of the electric current that detects does not change, and the decline ratio of the magnitude of voltage that detects during greater than first schedule time, confirms to have produced singlephase earth fault greater than time of predetermined voltage decline ratio value.
3. fault detector according to claim 1 is characterized in that, said first controller determines whether to have produced phase fault based on the transient state component of the electric current that detects.
4. fault detector according to claim 3 is characterized in that, said first controller comprises:
The 4th comparer compares the transient state component and the predetermined current value of electric current;
Timer carries out timing to the transient state component of the current value that detects greater than the time of predetermined current value;
Fault is confirmed the unit, when the transient state component of the current value that detects greater than the time remaining of predetermined current value after second schedule time, the electric current of detection and voltage all become when zero, confirm to have produced phase fault.
5. fault detector according to claim 3 is characterized in that, said fault recognition system also comprises: alarm unit when fault confirms that singlephase earth fault and/or phase fault are confirmed to have taken place in the unit, sends a warning.
6. fault detector according to claim 5 is characterized in that, said alarm unit sends a warning through flashing and warning information is sent to the pulpit of being responsible for the distribution line maintenance through wireless mode.
7. fault detector according to claim 1 is characterized in that, said fault recognition system also comprises:
First signal processor is used for the current value that detects is carried out the steady-state component that LPF produces electric current;
The secondary signal processor is used for the current value that detects is carried out the transient state component that high-pass filtering produces electric current;
The 3rd signal processor is used for the magnitude of voltage that detects is carried out the steady-state component that LPF produces voltage.
8. fault detector according to claim 1, its characteristic spy is, also comprises: the bird-repeller system that is used to disperse birds.
9. fault detector according to claim 1, wherein, said bird-repeller system comprises:
Second controller;
A plurality of illuminators unit, luminous by predetermined time-slot sequence ground under the control of second controller;
The ultrasonic wave transducer unit issues the excess of export sound in the control of second controller.
10. fault detector according to claim 1 is characterized in that, the fault recognition system also comprises:
A plurality of illuminators unit, luminous by predetermined time-slot sequence ground under the control of first controller;
The ultrasonic wave transducer unit issues the excess of export sound in the control of first controller.
11. according to claim 9 or 10 described fault detectors, its characteristic spy is, sends the sound of 12kHz to 25kHz under the ultrasonic wave transducer unit with the frequency interval of 1kHz;
Wherein, predetermined time slot is 400 milliseconds, and the luminous time of each illuminator unit is 100 milliseconds.
12. according to Claim 8 or 10 described fault detectors, it is characterized in that, also comprise:
The housing of said fault recognition system or fault recognition system and bird-repeller system is installed,
Wherein, said housing comprises the upper shell of cylindrical structure and the lower house of the cylindrical structure that removably combines with said upper shell.
13. fault detector according to claim 12 is characterized in that, said upper shell is the opaque polyester material, and said lower house is the transparent polyester material.
14. indicator according to claim 12 is characterized in that, the top of said upper shell is provided with the anchor clamps of the lead that is used to install said distribution line.
15. indicator according to claim 14 is characterized in that, said anchor clamps are provided with the solar panels fixture,
Said solar panels fixture is provided with the solar panels that rotate along surface level.
16. indicator according to claim 15 is characterized in that, also comprises: charging management system is used to store the voltage of solar panels output and supplies power with bird-repeller system to the fault recognition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100665913A CN102608484A (en) | 2012-03-14 | 2012-03-14 | Fault indictor for power distribution lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100665913A CN102608484A (en) | 2012-03-14 | 2012-03-14 | Fault indictor for power distribution lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102608484A true CN102608484A (en) | 2012-07-25 |
Family
ID=46526004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100665913A Pending CN102608484A (en) | 2012-03-14 | 2012-03-14 | Fault indictor for power distribution lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102608484A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076243A (en) * | 2013-03-29 | 2014-10-01 | 北京映翰通网络技术股份有限公司 | Method for detection and indication of single-phase ground faults of small current grounding power distribution network and device |
| WO2014154164A1 (en) * | 2013-03-29 | 2014-10-02 | 北京映翰通网络技术股份有限公司 | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network |
| CN104569729A (en) * | 2015-01-29 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Fault indicator based power distribution network single-phase earth fault detection method and fault indicator based power distribution network single-phase earth fault detection system |
| CN105249788A (en) * | 2015-11-18 | 2016-01-20 | 黄成� | Automatically folded curtain system |
| CN105286468A (en) * | 2015-11-18 | 2016-02-03 | 黄成� | Intelligent curtain system capable of adjusting light shading effect |
| CN105342327A (en) * | 2015-11-18 | 2016-02-24 | 黄成� | Intelligent curtain system with ventilation and shading effect |
| CN106569091A (en) * | 2016-10-20 | 2017-04-19 | 国网山西省电力公司临汾供电公司 | Power distribution line earth fault point search system |
| CN108183596A (en) * | 2017-12-21 | 2018-06-19 | 成都芯源系统有限公司 | DC converter and method thereof |
| CN111267566A (en) * | 2016-03-30 | 2020-06-12 | 塞夫-霍兰德公司 | Vehicle connecting line storage and control device |
| CN113484689A (en) * | 2021-07-22 | 2021-10-08 | 云南电网有限责任公司昆明供电局 | Distribution network fault studying and judging method and system based on feeder line current sudden reduction degree and switch load ratio probability density |
| CN116381552A (en) * | 2023-05-29 | 2023-07-04 | 西安梦源电子科技有限责任公司 | Power distribution network operation detection system of power system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340967A (en) * | 2001-05-15 | 2002-11-27 | Furukawa Electric Co Ltd:The | Method for detecting failure point of transmission and distribution line and its device |
| CN201133926Y (en) * | 2008-01-04 | 2008-10-15 | 北京科锐配电自动化股份有限公司 | Fault indication device |
| CN201216141Y (en) * | 2008-06-03 | 2009-04-08 | 李峥 | Bird expelling device of supersonic wave |
| CN201576069U (en) * | 2009-11-17 | 2010-09-08 | 北京电研华源电力技术有限公司 | Fault indicator of power line |
| CN102231517A (en) * | 2011-06-09 | 2011-11-02 | 航天科工深圳（集团）有限公司 | Method and system for determining and isolating power distribution network fault |
| CN202563033U (en) * | 2012-03-14 | 2012-11-28 | 北京中电欧亚科技有限公司 | Distribution line fault indicator |
-
2012
- 2012-03-14 CN CN2012100665913A patent/CN102608484A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340967A (en) * | 2001-05-15 | 2002-11-27 | Furukawa Electric Co Ltd:The | Method for detecting failure point of transmission and distribution line and its device |
| CN201133926Y (en) * | 2008-01-04 | 2008-10-15 | 北京科锐配电自动化股份有限公司 | Fault indication device |
| CN201216141Y (en) * | 2008-06-03 | 2009-04-08 | 李峥 | Bird expelling device of supersonic wave |
| CN201576069U (en) * | 2009-11-17 | 2010-09-08 | 北京电研华源电力技术有限公司 | Fault indicator of power line |
| CN102231517A (en) * | 2011-06-09 | 2011-11-02 | 航天科工深圳（集团）有限公司 | Method and system for determining and isolating power distribution network fault |
| CN202563033U (en) * | 2012-03-14 | 2012-11-28 | 北京中电欧亚科技有限公司 | Distribution line fault indicator |
Non-Patent Citations (1)
| Title |
|---|
| 施伟斌: "基于10KV小电阻接地系统的架空线路接地故障指示器", 《低压电器》, no. 13, 31 December 2007 (2007-12-31) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076243B (en) * | 2013-03-29 | 2016-11-09 | 北京映翰通网络技术股份有限公司 | A kind of small current neutral grounding one-phase earthing failure in electric distribution network detection indicating means and equipment |
| WO2014154164A1 (en) * | 2013-03-29 | 2014-10-02 | 北京映翰通网络技术股份有限公司 | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network |
| CN104076243A (en) * | 2013-03-29 | 2014-10-01 | 北京映翰通网络技术股份有限公司 | Method for detection and indication of single-phase ground faults of small current grounding power distribution network and device |
| CN104569729A (en) * | 2015-01-29 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Fault indicator based power distribution network single-phase earth fault detection method and fault indicator based power distribution network single-phase earth fault detection system |
| CN105249788A (en) * | 2015-11-18 | 2016-01-20 | 黄成� | Automatically folded curtain system |
| CN105342327A (en) * | 2015-11-18 | 2016-02-24 | 黄成� | Intelligent curtain system with ventilation and shading effect |
| CN105286468A (en) * | 2015-11-18 | 2016-02-03 | 黄成� | Intelligent curtain system capable of adjusting light shading effect |
| CN105286468B (en) * | 2015-11-18 | 2018-03-27 | 黄成� | A kind of intelligent curtain system of adjustable shading effect |
| CN111267566A (en) * | 2016-03-30 | 2020-06-12 | 塞夫-霍兰德公司 | Vehicle connecting line storage and control device |
| CN106569091A (en) * | 2016-10-20 | 2017-04-19 | 国网山西省电力公司临汾供电公司 | Power distribution line earth fault point search system |
| CN108183596A (en) * | 2017-12-21 | 2018-06-19 | 成都芯源系统有限公司 | DC converter and method thereof |
| CN113484689A (en) * | 2021-07-22 | 2021-10-08 | 云南电网有限责任公司昆明供电局 | Distribution network fault studying and judging method and system based on feeder line current sudden reduction degree and switch load ratio probability density |
| CN113484689B (en) * | 2021-07-22 | 2023-08-29 | 云南电网有限责任公司昆明供电局 | Distribution network fault studying and judging method and system based on load sudden reduction degree and switch load duty ratio probability density |
| CN116381552A (en) * | 2023-05-29 | 2023-07-04 | 西安梦源电子科技有限责任公司 | Power distribution network operation detection system of power system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102608484A (en) | Fault indictor for power distribution lines | |
| CN104578429A (en) | Online operation monitoring system for cable branch box | |
| CN1120672A (en) | Insulation state measurement method, insulation state judgement apparatus, and dispersion type power generating system using the same | |
| CN207074246U (en) | A kind of GIS partial discharge on-line monitoring system | |
| CN105191908A (en) | Multi-path bird expelling device | |
| CN203644978U (en) | Multifunctional ground wire operating rod | |
| CN202563033U (en) | Distribution line fault indicator | |
| CN103777093B (en) | A kind of gas laser fault detection system and detection method thereof | |
| CN202257832U (en) | Detector for electric fire protection | |
| CN112491126B (en) | Portable bypass anti-interference device and operation method thereof | |
| CN204831613U (en) | Wireless temperature sensor | |
| CN102086585B (en) | Device and method for detecting water leakage of washing machine | |
| CN204376537U (en) | Cable branch box on-line operation monitoring system | |
| CN206281589U (en) | A kind of special multichannel prosecution protection device of power transmission busbar | |
| CN202441544U (en) | Wind driven generator having insulation detection function | |
| CN209028769U (en) | A kind of electronic box intelligent monitoring and controlling device | |
| CN208421132U (en) | A kind of current temperature and On-line Fault monitor | |
| CN110880810A (en) | Intelligent electricity testing system applied to transformer substation | |
| CN211698045U (en) | Electric line insulation detection auxiliary device | |
| CN104459414A (en) | Detecting method and device of variable pitch charger UCC in variable pitch system | |
| CN201935981U (en) | Fault detector for electric distribution network | |
| CN104410040A (en) | Quick breaking device for power approach of engineering vehicle | |
| CN204405753U (en) | The pick-up unit of oar charger AC500 is become in a kind of pitch-controlled system | |
| CN203911313U (en) | Intelligent safe box type transformer station | |
| CN203881857U (en) | Gas laser failure detecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |