CN105259461A - Work state early-warning method and system for high-voltage insulator of electrical railway - Google Patents
Work state early-warning method and system for high-voltage insulator of electrical railway Download PDFInfo
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Abstract
The invention provides a work state early-warning method and system for a high-voltage insulator of electrical railway. The leakage current of the insulator is sampled to obtain sampling data of leakage current of the insulator; the frequency spectrum of low-frequency pulse and the scale crossing rate of high-frequency pulse of the leakage current of the insulator are obtained according to the sampling data; the pulse form of the leakage current is restored according to the frequency spectrum and the scale crossing rate; and the corresponding work state of the insulator is determined according to the pulse form. The form of leakage current is regular in the whole work period of the insulator, the method and system determine the work state of the insulator by utilizing the spectral form characteristic of the leakage current instead of utilizing one threshold of the leakage current as in the prior art, the method and system are suitable for different environments, and use is accurate and convenient.
Description
Technical field
The present invention relates to technical field of electric power, be specifically related to a kind of electric railroad high-tension insulator duty method for early warning and system.
Background technology
The supply line of electric railway uses high-tension insulator in a large number, and the quality of high-tension insulator duty is directly connected to the safety problem of railway operation.The duty of high-tension insulator generally has four-stage: first, the insulator surface contamination stage, this stage insulator leakage current is based on power frequency, amplitude is less than below 1mA, for the insulator having damage, as: zero resistance insulator and crannied insulator, have high-frequency corona pulse in this stage and occur; The second, in the insulator surface moistening stage, in this stage, insulator surface contamination layer absorbs moisture, and insulation resistance reduces, and leakage current increases rapidly, and insulator running status degenerates; 3rd, insulator surface produces the shelf depreciation stage, in wet environment, insulator surface contamination layer makes moist, and leakage current continues to increase, and carries out oven dry formation dry zone to contamination layer, cause insulator to bear redistributing of voltage, dry zone bears very high voltage, forms glow discharge; 4th, in the flashover stage, in this stage, the dry zone of insulator surface expands, and local arc is elongated, and pollution layer resistance reduces, and leakage current increases, and local arc pressure drop constantly reduces, and develops into flashover, causes major accident time serious.
At present, domestic and international dynamic monitoring insulator work state adopts the way of monitoring insulator leakage current to carry out mostly.Such as, by the maximum impulse amplitude of insulator leakage current under collection working voltage, the duty of insulator is judged.But, because insulator leakage current is from small to large until develop into flashover, there is a process, affect the size of Leakage Current in this process except this four large factor of insulator quality itself, electric pressure, weather conditions and insulator contamination degree, also have other a lot of enchancement factors, be difficult to predict by a unified standard or threshold value.Such as, for area, moister Pearl River Delta, under general case, leakage current is less than 650uA, and insulator surface is without any creepage; When leakage current is greater than 1mA, the obvious arcing of insulator surface; Arc of going here and there when leakage current is greater than 2mA is interrupted maintenance, but these these data are for Arid Area, but extremely inaccurate.In sum, adopt the size of monitoring insulator leakage current that unified threshold values cannot be used to judge insulator work state, well cannot carry out safe early warning to the running status of high-tension insulator.
Summary of the invention
Therefore, the size that the technical problem to be solved in the present invention is to overcome monitoring insulator leakage current of the prior art well cannot carry out the defect of safe early warning to the running status of high-tension insulator, thus provides a kind of electric railroad high-tension insulator duty method for early warning and system.
For this reason, technical scheme of the present invention is as follows:
A kind of electric railroad high-tension insulator duty method for early warning, comprises the steps:
Insulator Leakage Current is sampled, obtains the sampled data of insulator Leakage Current;
The frequency spectrum of the low-frequency pulse of described insulator Leakage Current is obtained according to described sampled data;
The yardstick crossing rate of the high-frequency impulse of described insulator Leakage Current is obtained according to described sampled data;
The pulse mode of described Leakage Current is reduced according to described frequency spectrum and described yardstick crossing rate;
The duty that insulator is corresponding is judged according to described pulse mode.
Preferably, describedly judge that the step of the duty that insulator is corresponding specifically comprises according to described pulse mode:
When described pulse mode is sinusoidal power frequency Leakage Current, whether spike is there is when judging power frequency Leakage Current maximal value, be that the duty that described insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to described insulator is safety operation area;
When described pulse mode is triangular wave, then the duty that described insulator is corresponding is that insulator surface produces the shelf depreciation stage;
When described pulse mode be random nothing zero stop time, then the duty that described insulator is corresponding is the flashover stage.
Preferably described method, also comprises: more same insulator, in not described pulse mode in the same time, obtains the change of the pulse mode of described insulator, predicts the speed that this insulator degenerates.
Preferably described method, also comprises: compare in the described pulse mode of synchronization different insulative of identical regional same batch, to search defective insulator.
Preferably, when multiple insulator connects common ground by a ground wire, then the sampled data of the Leakage Current of each insulator is obtained in the following way:
Holding with entering at each insulator is sampled to Leakage Current;
Described sampled data is subtracted each other between two, obtains the sampled data of the Leakage Current of each insulator.
Preferably described method, also comprises the maximum amplitude of collection insulator Leakage Current and judges whether described maximum amplitude exceedes predetermined threshold value, if then start to sample to insulator Leakage Current.
A kind of electric railroad high-tension insulator duty early warning system, comprising:
Acquisition component, is connected with insulator, for sampling to insulator Leakage Current, obtains the sampled data of insulator Leakage Current;
Collection terminal data processor, for obtaining the frequency spectrum of the low-frequency pulse of described insulator Leakage Current according to described sampled data, and obtains the yardstick crossing rate of the high-frequency impulse of described insulator Leakage Current according to described sampled data;
Transmission part, for sending described frequency spectrum and described yardstick crossing rate to server (4);
Server, for reducing the pulse mode of described Leakage Current according to the described frequency spectrum that receives and described yardstick crossing rate; And for judging according to described pulse mode the duty that insulator is corresponding.
Preferably, according to described pulse mode, described server judges that the process of the duty that insulator is corresponding specifically comprises:
When described pulse mode is sinusoidal power frequency Leakage Current, whether spike is there is when judging power frequency Leakage Current maximal value, be that the duty that described insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to described insulator is safety operation area;
When described pulse mode is triangular wave, then the duty that described insulator is corresponding is that insulator surface produces the shelf depreciation stage;
When described pulse mode be random nothing zero stop time, then the duty that described insulator is corresponding is the flashover stage.
Preferably, described server also for more same insulator in not described pulse mode in the same time, obtain the change of the pulse mode of described insulator, predict the speed that this insulator degenerates;
Also for comparing in the described pulse mode of synchronization different insulative of identical regional same batch, to search defective insulator.
Preferably, when multiple insulator connects common ground by a ground wire, then the sampled data of the Leakage Current of each insulator is obtained in the following way:
Holding with entering at each insulator is installed described acquisition component and is sampled to Leakage Current;
The described sampled data that each described acquisition component collects is subtracted each other by described collection terminal data processor between two, obtains the sampled data of the Leakage Current of each insulator.
Technical solution of the present invention, tool has the following advantages:
1. electric railroad high-tension insulator duty method for early warning provided by the invention and system, by the pulse mode of the yardstick crossing rate reduction Leakage Current of the frequency spectrum in the low-frequency pulse of insulator Leakage Current and high-frequency impulse, and judge according to pulse mode the duty that insulator is corresponding.Because insulator is within the whole work period, the form of Leakage Current has certain rule governed, the method and system just judge the duty of insulator from the feature of Leakage Current spectrum morphology, no longer judged by the threshold value arranging insulator leakage current size in prior art, make the method and system can be applicable to each different environment, and accurately easy to use.
2. electric railroad high-tension insulator duty method for early warning provided by the invention and system, by more same insulator in not pulse mode in the same time, obtains the change of the pulse mode of insulator, predicts the speed that this insulator degenerates.If because insulator degenerates within the work period, then can show in the pulse mode of Leakage Current, if current time and a upper moment ratio, pulse mode there occurs larger change, then illustrate and to degenerate rapidly to insulator, if this thing happens, then need to carry out early warning to when front insulator.
3. electric railroad high-tension insulator duty method for early warning provided by the invention and system, by comparing in the pulse mode of synchronization different insulative of identical regional same batch, to search defective insulator.Due to the area, batch all identical with the moment of different insulators, the external environment that then can be understood as different insulative is the same, according to unitary variant principle, if there is the pulse mode of certain insulator different from other insulators, then can illustrate that this insulator self may be defective, thus reach the object of searching defective insulator, simple.
4. electric railroad high-tension insulator duty method for early warning provided by the invention, also comprises the maximum amplitude of collection insulator Leakage Current and judges whether maximum amplitude exceedes predetermined threshold value, if then start to sample to insulator Leakage Current.Because insulator, only when maximum amplitude exceedes certain threshold value, the problem that duty starts to degenerate just may occur, be then so provided with and be beneficial to saving energy consumption, and alleviate data processing amount.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of a concrete example of electric railroad high-tension insulator duty method for early warning in the embodiment of the present invention 1;
Fig. 2 is the theory diagram of a concrete example of electric railroad high-tension insulator duty early warning system in the embodiment of the present invention 2;
Fig. 3 is the theory diagram of power unit in electric railroad high-tension insulator duty early warning system in the embodiment of the present invention 2;
Reference numeral: 1-acquisition component; 2-collection terminal data processor; 3-transmission part; 4-server.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can also be the connection of two element internals, can be wireless connections, also can be wired connection.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, if below in the described different embodiment of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of electric railroad high-tension insulator duty method for early warning, comprises the steps:
S1: sample to insulator Leakage Current, obtains the sampled data of insulator Leakage Current.Such as, can be sampled by current acquisition ring, sampling can be a work period with power frequency half cycle (10ms), with phase-locked loop operation locking power frequency waveform.The maximum amplitude of collection insulator Leakage Current can also be comprised and judge whether maximum amplitude exceedes predetermined threshold value before step S1, if just proceed to the step of step S2 and S3, this step all can be realized by voltage comparator of the prior art etc., is not described in detail at this; Because insulator is only when the maximum amplitude of Leakage Current exceedes certain threshold value, just may there is the problem that duty starts to degenerate, so be provided with and be beneficial to saving energy consumption, and alleviate data processing amount.
S2: the frequency spectrum obtaining the low-frequency pulse of insulator Leakage Current according to sampled data, because sampled data is the time-domain information of Leakage Current, can obtain frequency domain information by FFT conversion, namely obtain frequency spectrum; Can comprise strange frequency multiplication effective value in this frequency spectrum, wherein, strange frequency multiplication refers to reveal power frequency, 3 frequencys multiplication, 5 frequencys multiplication, 7 frequencys multiplication, 9 frequencys multiplication.
S3: the yardstick crossing rate obtaining the high-frequency impulse of insulator Leakage Current according to sampled data.In concrete use, 5 grades of statistics can be divided, to a high-frequency impulse statistical yardstick crossing rate, cost-saving, convenient and easy.
S4: reduce the pulse mode of Leakage Current according to the yardstick crossing rate obtained in the frequency spectrum obtained in step S2 and step S3.As a kind of specific implementation, can be realized by the mode of wavelet transformation, those skilled in the art should be appreciated that and adopt other modes to be also fine, as long as can realize the pulse mode restoring Leakage Current.
S5: judge the duty that insulator is corresponding according to pulse mode.
Step S5 specifically can comprise:
When pulse mode is sinusoidal power frequency Leakage Current, whether occur spike when judging power frequency Leakage Current maximal value, be, the duty that insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to insulator is safety operation area;
When pulse mode is triangular wave, then the duty that insulator is corresponding is that insulator surface produces the shelf depreciation stage;
When pulse mode be random nothing zero stop time, as: power frequency reveal big current, the phenomenon such as high-frequency impulse does not have zero to stop, then the duty that insulator is corresponding is the flashover stage.
Because insulator is within the whole work period, the form of Leakage Current has certain rule governed (as shown in the specific implementation of step S5), the method that the present embodiment provides just judges the duty of insulator from the feature of Leakage Current spectrum morphology, no longer judged by the threshold value arranging insulator leakage current size in prior art, make the method can be applicable to each different environment, and accurately easy to use.
On the basis of such scheme, also comprise: more same insulator, in not pulse mode in the same time, obtains the change of the pulse mode of insulator, predicts the speed that this insulator degenerates, that is: carry out longitudinal comparison to the pulse mode of same insulator.If because insulator degenerates within the work period, then can show in the pulse mode of Leakage Current, if current time and a upper moment ratio, pulse mode there occurs larger change, then illustrate and to degenerate rapidly to insulator, if this thing happens, then need to carry out early warning to when front insulator.
On the basis of such scheme, also comprise: different insulative of identical regional same batch is compared in the pulse mode of synchronization, to search defective insulator, that is: lateral comparison is carried out to the pulse mode of multiple insulator.Due to the area, batch all identical with the moment of different insulators, the external environment that then can be understood as different insulative is the same, according to unitary variant principle, if there is the pulse mode of certain insulator different from other insulators, then can illustrate that this insulator self may be defective, thus reach the object of searching defective insulator, simple.Defective insulator can comprise: occur defect in defect of dispatching from the factory, installation process, occur defect after defect or flashover when running.
In actual use, may occur that multiple insulator connects the situation of common ground by a ground wire, then can obtain the sampled data of the Leakage Current of each insulator in the following way: holding at each insulator is sampled to Leakage Current with entering; Sampled data is subtracted each other between two, then can obtain the sampled data of the Leakage Current of each insulator.As: the method for being subtracted each other by current spectrum, the sampled data of the Leakage Current of each insulator is separated.
Embodiment 2
As shown in Figure 2, the present embodiment provides a kind of electric railroad high-tension insulator duty early warning system, comprising:
Acquisition component 1, is connected with insulator, for sampling to insulator Leakage Current, obtains the sampled data of insulator Leakage Current.Particularly, this acquisition component 1 can hang on the leakage line of each insulator string.Acquisition component of the prior art mostly realizes sampling to insulator leakage current by being through to reveal on line, but in real life, a lot of insulator is had to be next-door neighbour's electric pole, now acquisition component of the prior art cannot pass the object revealed line and realize sampling to insulator leakage current, the acquisition component mentioned in the present embodiment can be designed to ring-type, is enclosed within object electric pole reaching and samples to insulator Leakage Current.In actual use, acquisition component 1 can be designed to only have when the maximum amplitude of insulator Leakage Current exceedes predetermined threshold value, just start sampling; Because insulator is only when the maximum amplitude of Leakage Current exceedes certain threshold value, just may there is the problem that duty starts to degenerate, so be provided with and be beneficial to saving energy consumption, and alleviate data processing amount.
Collection terminal data processor 2, for the yardstick crossing rate of the frequency spectrum and high-frequency impulse that obtain the low-frequency pulse of insulator Leakage Current according to sampled data.
Transmission part 3, for the yardstick crossing rate of the frequency spectrum and high-frequency impulse that send insulator Leakage Current low-frequency pulse to server 4.This transmission part 3 can adopt wireless mode to propagate, as utilized the existing radio communications such as GPRS, cost-saving; Transmission mode can adopt the transmission mode of relaying.In actual use, transmission condition can be set, only frequency spectrum and yardstick crossing rate meet certain pre-conditioned time, just send it to server 4.
Server 4, for reducing the pulse mode of Leakage Current according to the frequency spectrum that receives and yardstick crossing rate; And for judging the duty that insulator is corresponding according to pulse mode.
Wherein, according to pulse mode, server 4 judges that the process of the duty that insulator is corresponding specifically comprises: when pulse mode is sinusoidal power frequency Leakage Current, whether spike is there is when judging power frequency Leakage Current maximal value, be that the duty that insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to insulator is safety operation area; When pulse mode is triangular wave, then the duty that insulator is corresponding is that insulator surface produces the shelf depreciation stage; When pulse mode be random nothing zero stop time, then the duty that insulator is corresponding is the flashover stage.
By calculating the yardstick crossing rate of frequency spectrum in the low-frequency pulse of insulator Leakage Current and high-frequency impulse at collection terminal data processor 2, and send it to server 4 and restore pulse mode, and judge the duty of insulator according to pulse mode.Which reduce the transmission quantity of quantity; Simultaneously, because insulator is within the whole work period, the form of Leakage Current has certain rule governed, this system just judges the duty of insulator from the feature of Leakage Current spectrum morphology, no longer judged by the threshold value arranging insulator leakage current size in prior art, make this system can be applicable to each different environment, be convenient to promote the use of.
On the basis of such scheme, server 4 can also be used for more same insulator in not pulse mode in the same time, obtains the change of the pulse mode of insulator, predicts the speed that this insulator degenerates; Can also be used for comparing in the pulse mode of synchronization different insulative of identical regional same batch, to search defective insulator.
In real life, also may occur that multiple insulator connects the situation of common ground by a ground wire, then can obtain the sampled data of the Leakage Current of each insulator in the following way: holding at each insulator is installed acquisition component 1 pair of Leakage Current and sampled with entering, as: install on leakage line; Collection terminal data processor 2 sampled data obtained of each acquisition component 1 being sampled is subtracted each other between two, then obtain the sampled data of the Leakage Current of each insulator.
As shown in Figure 3, the power unit of native system can adopt solar film battery to power, super farad capacitor accumulate, and after DC/DC change-over circuit, to acquisition component 1, collection terminal data processor 2, transmission part 3 is powered.When power failure, if the voltage of super farad capacitor is lower than 1V alarm.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. an electric railroad high-tension insulator duty method for early warning, is characterized in that, comprise the steps:
Insulator Leakage Current is sampled, obtains the sampled data of insulator Leakage Current;
The frequency spectrum of the low-frequency pulse of described insulator Leakage Current is obtained according to described sampled data;
The yardstick crossing rate of the high-frequency impulse of described insulator Leakage Current is obtained according to described sampled data;
The pulse mode of described Leakage Current is reduced according to described frequency spectrum and described yardstick crossing rate;
The duty that insulator is corresponding is judged according to described pulse mode.
2. method according to claim 1, is characterized in that, describedly judges that the step of the duty that insulator is corresponding specifically comprises according to described pulse mode:
When described pulse mode is sinusoidal power frequency Leakage Current, whether spike is there is when judging power frequency Leakage Current maximal value, be that the duty that described insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to described insulator is safety operation area;
When described pulse mode is triangular wave, then the duty that described insulator is corresponding is that insulator surface produces the shelf depreciation stage;
When described pulse mode be random nothing zero stop time, then the duty that described insulator is corresponding is the flashover stage.
3. method according to claim 1 and 2, is characterized in that, also comprises: more same insulator, in not described pulse mode in the same time, obtains the change of the pulse mode of described insulator, predicts the speed that this insulator degenerates.
4. according to the arbitrary described method of claim 1-3, it is characterized in that, also comprise: different insulative of identical regional same batch is compared in the described pulse mode of synchronization, to search defective insulator.
5. according to the arbitrary described method of claim 1-4, it is characterized in that, when multiple insulator connects common ground by a ground wire, then obtain the sampled data of the Leakage Current of each insulator in the following way:
Holding with entering at each insulator is sampled to Leakage Current;
Described sampled data is subtracted each other between two, obtains the sampled data of the Leakage Current of each insulator.
6. according to the arbitrary described method of claim 1-5, it is characterized in that, also comprise the maximum amplitude of collection insulator Leakage Current and judge whether described maximum amplitude exceedes predetermined threshold value, if then start to sample to insulator Leakage Current.
7. an electric railroad high-tension insulator duty early warning system, is characterized in that, comprising:
Acquisition component (1), is connected with insulator, for sampling to insulator Leakage Current, obtains the sampled data of insulator Leakage Current;
Collection terminal data processor (2), for obtaining the frequency spectrum of the low-frequency pulse of described insulator Leakage Current according to described sampled data, and obtains the yardstick crossing rate of the high-frequency impulse of described insulator Leakage Current according to described sampled data;
Transmission part (3), for sending described frequency spectrum and described yardstick crossing rate to server (4);
Server (4), for reducing the pulse mode of described Leakage Current according to the described frequency spectrum that receives and described yardstick crossing rate; And for judging according to described pulse mode the duty that insulator is corresponding.
8. system according to claim 7, is characterized in that, according to described pulse mode, described server (4) judges that the process of the duty that insulator is corresponding specifically comprises:
When described pulse mode is sinusoidal power frequency Leakage Current, whether spike is there is when judging power frequency Leakage Current maximal value, be that the duty that described insulator is corresponding is the insulator surface moistening stage, otherwise duty corresponding to described insulator is safety operation area;
When described pulse mode is triangular wave, then the duty that described insulator is corresponding is that insulator surface produces the shelf depreciation stage;
When described pulse mode be random nothing zero stop time, then the duty that described insulator is corresponding is the flashover stage.
9. the system according to claim 7 or 8, it is characterized in that, described server (4) also for more same insulator in not described pulse mode in the same time, obtain the change of the pulse mode of described insulator, predict the speed that this insulator degenerates;
Also for comparing in the described pulse mode of synchronization different insulative of identical regional same batch, to search defective insulator.
10. according to the arbitrary described system of claim 7-9, it is characterized in that, when multiple insulator connects common ground by a ground wire, then obtain the sampled data of the Leakage Current of each insulator in the following way:
Holding with entering at each insulator is installed described acquisition component (1) and is sampled to Leakage Current;
The described sampled data that each described acquisition component (1) collects is subtracted each other by described collection terminal data processor (2) between two, obtains the sampled data of the Leakage Current of each insulator.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169632A (en) * | 2017-11-13 | 2018-06-15 | 北京全路通信信号研究设计院集团有限公司 | A kind of damage in insulation detection method, device and computer program |
| CN108169632B (en) * | 2017-11-13 | 2020-06-26 | 北京全路通信信号研究设计院集团有限公司 | Insulation damage detection method, device and computer program |
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| CN105259461B (en) | 2017-12-12 |
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