CN104076256A - Ultrasonic positioning device and method for GIS withstand voltage breakdown fault - Google Patents
Ultrasonic positioning device and method for GIS withstand voltage breakdown fault Download PDFInfo
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- CN104076256A CN104076256A CN201410282909.0A CN201410282909A CN104076256A CN 104076256 A CN104076256 A CN 104076256A CN 201410282909 A CN201410282909 A CN 201410282909A CN 104076256 A CN104076256 A CN 104076256A
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Abstract
The invention discloses an ultrasonic positioning device and method for a GIS withstand voltage breakdown fault. The method comprises the steps that ultrasonic signals are collected through multiple ultrasonic sensors arranged on a shell of a cavity of a GIS interval air chamber, subjected to filtering, amplifying and A/D conversion by a signal processing module and output to a data analysis module; when the processed signals meet preset conditions, it is judged that the positions where the ultrasonic sensors collecting the ultrasonic signals are located are suspected fault locations; firstly, the position of a detection point with the maximum signal amplitude is determined, and then the detection point is judged to be a suspected fault location or not by judging whether the range of the difference between signal duration at the detection point and signal duration at an adjacent detection point is within a preset range, namely, the suspected fault location can be determined just through one-time obtaining of the ultrasonic signals. Consequently, the problem that when a scheme in the prior art is adopted, insulation damage is caused to a normal GIS part is avoided.
Description
Technical field
The present invention relates to localization of fault field, relate in particular to ultrasonic positioner and the method for the withstand voltage breakdown fault of a kind of GIS.
Background technology
Gas insulated combined electric appliance equipment (Gas Insulated Switchgear, GIS) refer to the Cubicle Gas-Insulated Switchgear using SF6 as insulating medium, also referred to as gas insulated metal enclosed swit chgear, there is floor area little, space compactness, be not affected by the external environment, high reliability, the existing trend that replaces conventional substation.
GIS On-Site Testing is as a handing-over property pilot project, its objective is and check that GIS equipment is packed, transported from disintegrating and the introducing that has or not potential faults these a series of processes is installed at scene, verify that whether its insulating property are intact, but because the technology controlling and process in the processes such as installation, transport is bad and other factors, can there is breakdown fault in GIS in withstand voltage process.
Therefore, location abort situation becomes problem demanding prompt solution.
At present, the abort situation localization method generally using is by change-over switch state, finds this trouble spot, but adopt in such a way by withstand voltage mode repeatedly, easily makes normal GIS position form insulation harm.
Summary of the invention
In view of this, the invention provides ultrasonic positioner and the method for the withstand voltage breakdown fault of a kind of GIS, easily make normal GIS position form insulation harm to solve in prior art, cause the problem of unnecessary loss, its concrete scheme is as follows:
A ultrasonic positioner for the withstand voltage breakdown fault of GIS, comprising:
Be installed on the multiple ultrasonic sensors on the shell cavity of gas insulated combined electric appliance equipment GIS interval air chamber, described ultrasonic sensor gathers ultrasonic signal output;
With the signal processing module that described ultrasonic sensor is connected, described signal processing module carries out filter amplifying processing and A/D conversion to the ultrasonic signal of described ultrasonic sensor transmission, and ultrasonic signal after treatment is exported;
The data analysis module being connected with described signal processing module, described data analysis module judges whether the ultrasonic signal after treatment that described signal processing module sends meets pre-conditioned, if meet, the ultrasonic sensor position of judging the described ultrasonic signal of collection is doubtful abort situation
Wherein, differ in preset range with the signal duration of contiguous ultrasonic sensor check point the signal duration of the check point of the described pre-conditioned signal amplitude maximum for ultrasonic signal.
Further, also comprise: the wireless communication module being connected respectively with described signal processing module and data analysis module,
Described signal processing module is sent to wireless communication module by radio-frequency radiation antenna by described ultrasonic signal after treatment, and described ultrasonic signal after treatment is sent to data analysis module by described wireless communication module.
Further, daubing coupling agent on described ultrasonic sensor.
Further, the position of described multiple ultrasonic sensors arranges according to the air chamber number in GIS withstand voltage test region and the number of ultrasonic sensor and arranges.
Further, comprising: each GIS interval air chamber arranges a ultrasonic sensor outward.
Further, also comprise: on bus, every 5-7m arranges a ultrasonic sensor.
Further, described preset range is in ± 10%.
A method for ultrasonic locating for the withstand voltage breakdown fault of GIS, is applied to fault locator, comprising:
Gather the ultrasonic signal of multiple different check points;
Described ultrasonic signal is carried out to filter amplifying processing and A/D conversion;
Whether the ultrasonic signal that judgement is amplified after processing and A/D conversion after filtering meets pre-conditioned, wherein, be describedly pre-conditionedly: the signal duration of ultrasonic signal of the check point of the signal amplitude maximum of ultrasonic signal and the signal duration of the ultrasonic signal of proximity detection point differ in preset range;
If so, the position that meets the check point at pre-conditioned described ultrasonic signal place is doubtful abort situation.
Further, what gather ultrasonic signal is ultrasonic sensor, daubing coupling agent on described ultrasonic sensor.
Further, described preset range is in ± 10%.
Can find out from technique scheme, ultrasonic positioner and the method for the withstand voltage breakdown fault of GIS disclosed by the invention, gather ultrasonic signals by the multiple ultrasonic sensors that are installed on the shell cavity of GIS interval air chamber, and the filter amplifying processing of process signal processing module, after A/D conversion, export data analysis module to, when signal after treatment meets when pre-conditioned, the position that judges the ultrasonic sensor place that gathers ultrasonic signal is doubtful abort situation, wherein, differed in preset range the signal duration of the check point of the pre-conditioned signal amplitude maximum for ultrasonic signal with the signal duration of contiguous ultrasonic sensor check point.First this programme by judging the position of check point of signal amplitude maximum, and then judge whether the scope that differs the signal duration of this position and the signal duration of proximity detection point judges in preset range whether this point is doubtful abort situation, only can judge doubtful abort situation by obtaining of a ultrasonic signal, avoid adopting the normal GIS position that makes that scheme of the prior art causes to form the problem of insulation harm.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the ultrasonic positioner of the withstand voltage breakdown fault of the disclosed a kind of GIS of the embodiment of the present invention;
Fig. 2 is the structural representation of the ultrasonic positioner example of the withstand voltage breakdown fault of the disclosed a kind of GIS of the embodiment of the present invention;
Fig. 3 is the structural representation of the ultrasonic positioner of the withstand voltage breakdown fault of the disclosed a kind of GIS of the embodiment of the present invention;
Fig. 4 is the process flow diagram of the method for ultrasonic locating of the withstand voltage breakdown fault of the disclosed a kind of GIS of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The present embodiment discloses the ultrasonic positioner of the withstand voltage breakdown fault of a kind of GIS, and its structural representation as shown in Figure 1, comprising:
Ultrasonic sensor 11, the signal processing module 12 being connected with ultrasonic sensor 11, the data analysis module 13 being connected with signal processing module 12.
Ultrasonic sensor 11 is installed on gas insulated combined electric appliance equipment (GAS INSULATED SWITCHGEAR, GIS) on the shell cavity of interval air chamber, ultrasonic sensor 11 can have multiple, arranges the position of each ultrasonic sensor 11 according to the air chamber number in GIS withstand voltage test region and ultrasonic sensor number.Preferably, each GIS interval air chamber arranges a ultrasonic sensor outward, and in addition, on bus, every 5-7m arranges a ultrasonic sensor.
Ultrasonic sensor 11 gathers ultrasonic signal, and this ultrasonic signal is the ultrasonic signal that GIS withstand voltage test process breakdown fault sends, and exports the ultrasonic signal collecting to signal processing module 12.
The ultrasonic signal that signal processing module 12 transmits multiple ultrasonic sensors 11 carries out filter amplifying processing and A/D conversion, wherein, signal processing module 12 comprises: filter and amplification unit, A/D converting unit, filter and amplification unit carries out filter and amplification to the ultrasonic signal receiving, and realize analog to digital conversion through A/D converting unit, and the signal after conversion is sent to data analysis module 13.
It is pre-conditioned that data analysis module 13 judges whether ultrasonic signal after treatment that signal processing module 12 sends meets, and in the time meeting, judges that ultrasonic sensor 11 positions that gather this ultrasonic signal are doubtful abort situation.
Data analysis module 13 obtains the ultrasonic signal that all ultrasonic sensors 11 gather, and all ultrasonic signals that obtain are shown, stored and judge.
Wherein, be pre-conditionedly: differed in preset range the signal duration of the check point of the signal amplitude maximum of ultrasonic signal with the signal duration of contiguous ultrasonic sensor check point.
Preferably, preset range can be in ± 10%.
The ultrasonic signal gathering when some ultrasonic sensors is the signal of amplitude maximum in all ultrasonic signals, and differed in preset range the signal duration of this ultrasonic signal with the duration of contiguous ultrasonic sensor check point, and the check point at this ultrasonic sensor place is doubtful abort situation.
Fig. 2 is the localization of fault example block diagram under the on-the-spot ac voltage withstanding of certain 550kV GIS of transformer station, and in figure, 1-8 place round dot represents the position of ultrasonic sensor, and each ultrasonic sensor at the signal of withstand voltage breakdown fault moment as shown by arrows in FIG..
First, analyze the amplitude of ultrasonic signal and can know, the amplitude of ultrasonic sensor 4,5,6 is super maximum range all, and the signal amplitude of other ultrasonic sensors is decayed along with the increase of the signal amplitude of ultrasonic sensor 4,5,6;
In addition, the signal duration of ultrasonic sensor 4, both difference were about 15% compared with 3, be greater than 10%, the signal duration of ultrasonic sensor 6 is compared with 7, both difference are also greater than 10%, and compared with ultrasonic sensor 5 and 4,6, the difference of signal duration is all in 10%.
Therefore the position that, can judge ultrasonic sensor 5 places is doubtful abort situation.
The ultrasonic positioner of the withstand voltage breakdown fault of the disclosed GIS of the present embodiment, gather ultrasonic signals by the multiple ultrasonic sensors that are installed on the shell cavity of GIS interval air chamber, and the filter amplifying processing of process signal processing module, after A/D conversion, export data analysis module to, when signal after treatment meets when pre-conditioned, the position that judges the ultrasonic sensor place that gathers ultrasonic signal is doubtful abort situation, wherein, differed in preset range the signal duration of the check point of the pre-conditioned signal amplitude maximum for ultrasonic signal with the signal duration of contiguous ultrasonic sensor check point.First this programme by judging the position of check point of signal amplitude maximum, and then judge whether the scope that differs the signal duration of this position and the signal duration of proximity detection point judges in preset range whether this point is doubtful abort situation, only can judge doubtful abort situation by obtaining of a ultrasonic signal, avoid adopting the normal GIS position that makes that scheme of the prior art causes to form the problem of insulation harm.
The present embodiment discloses the ultrasonic positioner of the withstand voltage breakdown fault of a kind of GIS, and its structural representation as shown in Figure 3, comprising:
Ultrasonic sensor 31, the signal processing module 32 being connected with ultrasonic sensor 31, the wireless communication module 33 being connected with signal processing module, the data analysis module 34 being connected with wireless communication module 33.
Except the structure identical with a upper embodiment, the present embodiment has also increased wireless communication module 33.
Signal processing module 32 is sent to wireless communication module 33 by radio-frequency radiation antenna by ultrasonic signal after treatment, the ultrasonic signal receiving is sent to data analysis module 34 by wireless communication module 33, by data analysis module 34, signal is carried out to analyzing and processing, to judge the position of doubtful fault gas chamber.
The disclosed fault locator of the present embodiment, realize the transmission of signal by wireless communication module, realized signal fast, accurately transmission, avoided the inconvenience that adopts wire transmission to bring.
Preferably, in the ultrasonic positioner of the withstand voltage breakdown fault of the disclosed GIS of the present embodiment, on ultrasonic sensor 31, smear appropriate couplant, with the air of fixing a breakdown between position and ultrasonic sensor, make ultrasonic wave energy effectively enter into abort situation, reach testing goal.
The present embodiment discloses the method for ultrasonic locating of the withstand voltage breakdown fault of a kind of GIS, is applied to the ultrasonic positioner of the withstand voltage breakdown fault of GIS, and its process flow diagram as shown in Figure 4, comprising:
Step S41, gather the ultrasonic signal of multiple different check points;
Utilize ultrasonic sensor to gather ultrasonic signal, daubing coupling agent on ultrasonic sensor, with the air of fixing a breakdown between position and ultrasonic sensor, makes ultrasonic wave energy effectively enter into abort situation, reaches testing goal.
Ultrasonic sensor is installed on the shell cavity of gas insulated combined electric appliance equipment GIS interval air chamber, ultrasonic sensor can have multiple, arranges the position of each ultrasonic sensor according to the air chamber number in GIS withstand voltage test region and ultrasonic sensor number.Preferably, each GIS interval air chamber arranges a ultrasonic sensor outward, and in addition, on bus, every 5-7m arranges a ultrasonic sensor.
Step S42, ultrasonic signal is carried out to filter amplifying processing and A/D conversion;
Whether the ultrasonic signal that step S43, judgement are amplified after processing and A/D conversion after filtering meets pre-conditioned;
Pre-conditionedly be: differed in preset range the signal duration of the check point of the signal amplitude maximum of ultrasonic signal with the signal duration of contiguous ultrasonic sensor check point.
Preferably, preset range can be in ± 10%.
Step S44, if so, judge that the position of the check point that meets pre-conditioned ultrasonic signal place is doubtful abort situation.
The method for ultrasonic locating of the withstand voltage breakdown fault of the disclosed GIS of the present embodiment, by gathering ultrasonic signal, and ultrasonic signal is carried out after filter amplifying processing, A/D conversion, judge whether ultrasonic signal after treatment meets pre-conditioned, when meeting when pre-conditioned, the position that judges collection ultrasonic signal is doubtful abort situation, wherein, differ in preset range with the signal duration of contiguous ultrasonic sensor check point the signal duration of the check point of the pre-conditioned signal amplitude maximum for ultrasonic signal.First this programme by judging the position of check point of signal amplitude maximum, and then judge whether the scope that differs the signal duration of this position and the signal duration of proximity detection point judges in preset range whether this point is doubtful abort situation, only can judge doubtful abort situation by obtaining of a ultrasonic signal, avoid adopting the normal GIS position that makes that scheme of the prior art causes to form the problem of insulation harm.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates referring to method part.
Professional can also further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can realize described function with distinct methods to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a ultrasonic positioner for the withstand voltage breakdown fault of GIS, is characterized in that, comprising:
Be installed on the multiple ultrasonic sensors on the shell cavity of gas insulated combined electric appliance equipment GIS interval air chamber, described ultrasonic sensor gathers ultrasonic signal output;
With the signal processing module that described ultrasonic sensor is connected, described signal processing module carries out filter amplifying processing and A/D conversion to the ultrasonic signal of described ultrasonic sensor transmission, and ultrasonic signal after treatment is exported;
The data analysis module being connected with described signal processing module, described data analysis module judges whether the ultrasonic signal after treatment that described signal processing module sends meets pre-conditioned, if meet, the ultrasonic sensor position of judging the described ultrasonic signal of collection is doubtful abort situation
Wherein, differ in preset range with the signal duration of contiguous ultrasonic sensor check point the signal duration of the check point of the described pre-conditioned signal amplitude maximum for ultrasonic signal.
2. device according to claim 1, is characterized in that, also comprises: the wireless communication module being connected respectively with described signal processing module and data analysis module,
Described signal processing module is sent to wireless communication module by radio-frequency radiation antenna by described ultrasonic signal after treatment, and described ultrasonic signal after treatment is sent to data analysis module by described wireless communication module.
3. device according to claim 1, is characterized in that, daubing coupling agent on described ultrasonic sensor.
4. device according to claim 1, is characterized in that, the position of described multiple ultrasonic sensors arranges according to the air chamber number in GIS withstand voltage test region and the number of ultrasonic sensor and arranges.
5. device according to claim 4, is characterized in that, comprising: each GIS interval air chamber arranges a ultrasonic sensor outward.
6. device according to claim 5, is characterized in that, also comprises: on bus, every 5-7m arranges a ultrasonic sensor.
7. device according to claim 1, is characterized in that, described preset range is in ± 10%.
8. a method for ultrasonic locating for the withstand voltage breakdown fault of GIS, is applied to fault locator, it is characterized in that, comprising:
Gather the ultrasonic signal of multiple different check points;
Described ultrasonic signal is carried out to filter amplifying processing and A/D conversion;
Whether the ultrasonic signal that judgement is amplified after processing and A/D conversion after filtering meets pre-conditioned, wherein, be describedly pre-conditionedly: the signal duration of ultrasonic signal of the check point of the signal amplitude maximum of ultrasonic signal and the signal duration of the ultrasonic signal of proximity detection point differ in preset range;
If so, the position of judging the check point that meets pre-conditioned described ultrasonic signal place is doubtful abort situation.
9. method according to claim 8, is characterized in that, what gather ultrasonic signal is ultrasonic sensor, daubing coupling agent on described ultrasonic sensor.
10. method according to claim 8, is characterized in that, described preset range is in ± 10%.
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| CN110530972A (en) * | 2019-07-26 | 2019-12-03 | 西安交通大学 | A kind of ultrasound detection evaluation method and device and device application method for the assessment of cable ageing state |
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Cited By (6)
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| CN110530972A (en) * | 2019-07-26 | 2019-12-03 | 西安交通大学 | A kind of ultrasound detection evaluation method and device and device application method for the assessment of cable ageing state |
| CN110703051A (en) * | 2019-10-15 | 2020-01-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Precise positioning method for fault point of GIL (Gate in L) voltage withstand test based on acoustic wave detection method |
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Application publication date: 20141001 |