CN108169632B - Insulation damage detection method, device and computer program - Google Patents
Insulation damage detection method, device and computer program Download PDFInfo
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- CN108169632B CN108169632B CN201711114760.5A CN201711114760A CN108169632B CN 108169632 B CN108169632 B CN 108169632B CN 201711114760 A CN201711114760 A CN 201711114760A CN 108169632 B CN108169632 B CN 108169632B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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Abstract
The invention provides an insulation damage detection method, an insulation damage detection device and a computer program, wherein the insulation damage detection method comprises the steps of obtaining a head-to-tail ratio of a pulse signal; judging whether the head-to-tail ratio is in a preset range; and if the head-to-tail ratio exceeds the preset range, judging that the insulation is damaged. The insulation damage detection method, the insulation damage detection device and the computer program have higher detection reliability and safety.
Description
Technical Field
The invention belongs to the technical field of rail detection, and particularly relates to an insulation damage detection method, an insulation damage detection device and a computer program.
Background
At present, in a track circuit section in a railway station, a steel rail is divided into different track circuit sections through mechanical insulation joints, signals of the section are leaked to adjacent sections after the insulation joints are damaged, error display of the track circuit signals is possibly caused, and potential safety hazards are brought.
At present, some prior arts solve the potential safety hazard, such as the safety protection system under the condition of insulation breakage accumulation disconnection fault shown in fig. 1, a 25Hz phase-sensitive track circuit, and adjacent sections are all arranged in a polarity crossing manner to solve the safety protection after the insulation section is broken, i.e. the phases of signals on two sides of the insulation section are opposite, so that the signals leaking to the partition wall after the insulation section is broken can be distinguished from the signals of the section.
The disadvantages of this solution are: when the insulation is damaged, the choking lead wire is broken at one side, and the adjacent section has a vehicle, a train wheel forms a loop, and the adjacent section is mistakenly represented to be idle due to the generation of a signal with the same polarity as the adjacent section.
Disclosure of Invention
The invention provides a method, a device and a computer program for detecting insulation breakage by polarity crossing, aiming at solving the problem of potential safety hazard of insulation breakage by polarity crossing.
The invention provides an insulation breakage detection method, which is characterized in that,
acquiring a head-to-tail ratio of the pulse signal;
judging whether the head-to-tail ratio is in a preset range;
and if the head-to-tail ratio exceeds the preset range, judging that the insulation is damaged.
Further, the predetermined range is between 3:1 and 8: 1.
Further, a peak head voltage value and a peak tail voltage value of the pulse signal are obtained, and the head-to-tail ratio is calculated according to the obtained peak head voltage value and the obtained peak tail voltage value.
Further, the exceeding of the predetermined range includes being above the predetermined range or being below the predetermined range.
Further, acquiring the pulse signal frequency of the section;
judging whether the pulse signal frequency of the section is the same as the default value of the section;
and if the pulse signal frequency of the section is different from the default value of the section, judging that the insulation is damaged.
The invention also provides an insulation breakage detection device, which is characterized in that,
the first acquisition module is used for acquiring the head-to-tail ratio of the pulse signal;
the first judgment module is used for judging whether the head-to-tail ratio is in a preset range;
and the first judging module judges that the insulation is damaged if the head-tail ratio exceeds the preset range.
Further, the predetermined range is between 3:1 and 8: 1.
Further, the first obtaining module obtains a peak head voltage value and a peak tail voltage value of the pulse signal, and calculates the head-to-tail ratio according to the obtained peak head voltage value and the obtained peak tail voltage value.
Further, the exceeding of the predetermined range includes being above the predetermined range or being below the predetermined range.
Further, the insulation breakdown detecting apparatus further includes:
the second acquisition module is used for acquiring the pulse signal frequency of the section;
the second judgment module is used for judging whether the pulse signal frequency of the section is the same as the default setting value of the section;
and a second judging module for judging insulation damage when the pulse signal frequency is different.
The present invention also provides an insulation breakage detection system, characterized in that the system comprises:
a memory; and
one or more processors;
wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to cause the one or more processors to implement the method as recited in any one of the above.
The invention also provides a computer program product comprising computer executable instructions which may perform a method as described in any one of the above.
The invention provides an insulation breakage detection method, an apparatus system and a computer program, which are a high-safety insulation breakage inspection method and apparatus. After the method or the device is adopted, the insulation damage checking function realized by the traditional track circuit can be realized, and the shunt protection function is still realized under the conditions that the insulation single side of the track section is damaged and the single side of the adjacent choke transformer is broken when the track circuit is reliably shunted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a schematic block diagram of a safety protection arrangement under a prior art insulation breakage accumulation disconnect fault condition;
FIG. 2 is a schematic diagram showing a pulse signal in insulation breakage detection according to an embodiment of the present invention;
fig. 3 is a schematic diagram showing a frequency intrusion structure of a pulse signal in insulation breakage detection according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relay is controlled to be switched on, so that the pulse signal generating device reads the section information stored in the section configuration information memory and generates a pulse signal according to the section configuration information; the section configuration information stored in the section configuration information memory includes station number, the section number, the pulse transmission voltage of the section, the pulse transmission frequency of the section, the peak-to-peak ratio (i.e., the head-to-tail ratio) of the pulse of the section, and other information.
The pulse signal generator transmits the generated pulse to the transmitting end of the steel rail through a transmitting end cable simulation network, a transmitting end isolation box, a transmitting end transformer and the like.
The pulse signals are transmitted to the receiving end of the steel rail by taking the steel rail as a conductor, the signals enter the attenuation adjusting circuit after being transmitted by the receiving end transformer and the receiving end cable analog network, and the signals adjusted by the attenuation adjusting circuit are transmitted to the pulse signal receiving device.
In a normal case, the pulse signal receiving apparatus receives a normal pulse signal, such as the normal signal shown in fig. 2. The pulse signal has two characteristics simultaneously: (1) positive and negative polarities; (2) a frequency characteristic.
As can be seen from FIG. 2, the normal signal has a peak head UPeak headAnd peak tail UPeak tail. The pulse signal receiving device detects the received pulse signal, determines a voltage value of a peak head and a voltage value of a peak tail, and further calculates a head-to-tail ratio by a corresponding device, such as an acquisition module of the detection device, in a division operation manner: u shapePeak head/UPeak tail。
The corresponding storage module in the detection device is preset with a head-to-tail ratio range under the normal condition of the track section. The head-to-tail ratio range can be manually set or automatically set according to the track section condition. The preferred range of the predetermined head-to-tail ratio is 3:1 to 8:1, but the present invention is not limited to this range, and may be adjusted as appropriate according to the actual situation, for example, 4:1 to 8:1, or 2:1 to 7:1, or 2:1 to 9:1, etc.
After the head-to-tail ratio is obtained by the obtaining module, the corresponding module, for example, the judging module compares the head-to-tail ratio with the preset head-to-tail ratio range, and judges whether the detected head-to-tail ratio falls within the preset range.
After the insulation of the track section is broken, pulse signals of adjacent sections invade the section. In the embodiment of the present invention, the intrusive signal is referred to as an intrusive signal, such as the intrusive signal shown in fig. 2. After the intrusion signal intrudes into the track section, the peak head U of the intrusion signalInvasion ofWill be superimposed on the normal signal and will also interfere with the normal signal. At this time, the head-to-tail ratio of the pulse received by the pulse signal receiving device becomes UPeak head/UInvasion of. Due to the invasion of the invasion signal, the head-to-tail ratio changes and exceeds the preset head-to-tail ratio range.
The acquisition module of the detection device acquires the peak head voltage value and the peak tail voltage value of the pulse signal, and then the pulse signal passes through the peak head voltage value and the peak tail voltage valueThe operation method obtains a head-to-tail ratio when the head-to-tail ratio becomes U due to the intrusion of the intrusion signalPeak head/UInvasion of. And the corresponding judging module compares the head-to-tail ratio with the preset head-to-tail ratio range and determines whether the detected head-to-tail ratio is within the preset head-to-tail ratio range. If the voltage does not fall within the range, for example, exceeds a preset head-to-tail ratio range or is lower than the preset head-to-tail ratio range, the corresponding module, for example, the judging module judges the track section as an insulation damage.
After the insulation is determined to be broken, the relay may be opened, at which point the breakage check is completed.
Furthermore, the embodiment of the invention can further enhance the function of the insulation damage inspection by simultaneously utilizing the change condition of the section pulse signal frequency.
(1) When the insulation is damaged, signals of adjacent sections can invade the section, so that the invasion signals are superposed with the signals of the section, the head-to-tail ratio of the signals is influenced, and the frequency of the signals is changed, for example, as shown in fig. 3, the frequency of the signals of the section is f13Hz, adjacent sector signal frequency f14Hz when f2And f1After the signals are superposed, the frequency characteristics of the signals can be changed;
(2) when the signal frequency is detected not to be consistent with the default frequency of the section, the insulation damage is also judged;
(3) therefore, the insulation breakage is judged by utilizing the characteristics of the head-to-tail ratio and the frequency, and the insulation breakage is judged when one condition is not met, so that the insulation breakage checking function is enhanced.
The method steps in the embodiments of the present invention may be executed in corresponding modules, and these modules are not limited to hardware units, and software and firmware may be all applicable to the present invention. Thus, the method steps of the invention may be implemented by a computer program controlled system. Correspondingly, an embodiment of the present invention also provides an insulation breakage detection system, which includes: a memory; and one or more processors;
wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to cause the one or more processors to perform the method of the present invention.
Also, a computer program product is provided in the present invention, the computer program product comprising computer executable instructions that can perform the method described in the above embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the steps of the implementation method can be implemented by software plus a necessary general hardware platform, and can also be implemented by hardware. With this understanding, the above technical solutions substantially or contributing to the prior art may be embodied in the form of a hardware product, a software product, which can be stored in a computer-readable storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A method for detecting insulation breakage is characterized in that,
acquiring a head-to-tail ratio of a pulse signal, wherein a peak head voltage value and a peak-to-tail voltage value of the pulse signal are acquired, and the head-to-tail ratio is calculated according to the acquired peak head voltage value and the acquired peak-to-tail voltage value;
judging whether the head-to-tail ratio is within a preset range, wherein the preset range is 3:1-8: 1;
when the intrusion signal intrudes, the head-to-tail ratio becomes the ratio of the peak-to-head voltage value and the peak-to-head voltage value of the intrusion signal, and if the head-to-tail ratio exceeds the preset range, the insulation damage is judged;
acquiring the frequency of a pulse signal of the section;
judging whether the pulse signal frequency of the section is the same as the default value of the section;
and if the pulse signal frequency of the section is different from the default value of the section, judging that the insulation is damaged.
2. The insulation breakage detection method according to claim 1, wherein,
the exceeding of the predetermined range includes being above the predetermined range or being below the predetermined range.
3. An insulation breakage detecting apparatus, characterized in that,
the first acquisition module is used for acquiring a head-to-tail ratio of the pulse signal, acquiring a peak head voltage value and a peak tail voltage value of the pulse signal, and calculating the head-to-tail ratio according to the acquired peak head voltage value and the acquired peak tail voltage value;
the first judgment module is used for judging whether the head-to-tail ratio is within a preset range, wherein the preset range is 3:1-8: 1;
the first judging module is used for judging that the intrusion signal intrudes, the head-to-tail ratio is changed into the ratio of the peak head voltage value and the peak head voltage value of the intrusion signal, and the head-to-tail ratio exceeds the preset range, so that the insulation damage is judged;
the second acquisition module is used for acquiring the pulse signal frequency of the section;
the second judgment module is used for judging whether the frequency of the pulse signal of the section is the same as the default value of the section;
and the second judging module judges that the insulation is damaged when the pulse signal frequency of the section is different from the default value of the section.
4. The insulation breakage detecting apparatus according to claim 3,
the exceeding of the predetermined range includes being above the predetermined range or being below the predetermined range.
5. An insulation breakage detection system, characterized in that the system comprises:
a memory; and
one or more processors;
wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to enable the one or more processors to implement the method of any one of claims 1-2.
6. A computer program product comprising computer executable instructions for performing the method of any one of claims 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711114760.5A CN108169632B (en) | 2017-11-13 | 2017-11-13 | Insulation damage detection method, device and computer program |
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| CN201711114760.5A CN108169632B (en) | 2017-11-13 | 2017-11-13 | Insulation damage detection method, device and computer program |
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| CN108169632A CN108169632A (en) | 2018-06-15 |
| CN108169632B true CN108169632B (en) | 2020-06-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109532957B (en) * | 2018-11-15 | 2021-03-16 | 中国铁路设计集团有限公司 | High-speed railway station signal device and setting method and using method thereof |
| CN110356432B (en) * | 2019-06-11 | 2021-07-06 | 北京全路通信信号研究设计院集团有限公司 | Method and system for fault detection of track circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107447A (en) * | 1988-05-16 | 1992-04-21 | Hitachi, Ltd. | Abnormality diagnosing system and method for a high voltage power apparatus |
| CN102310870A (en) * | 2011-05-16 | 2012-01-11 | 铁道部运输局 | ZPW-2000A track circuit system |
| CN102632911A (en) * | 2012-04-24 | 2012-08-15 | 黑龙江瑞兴科技股份有限公司 | Method for detecting state of tuning area of uninsulated frequency-shift automatic block system |
| CN103552486A (en) * | 2013-11-13 | 2014-02-05 | 北京全路通信信号研究设计院有限公司 | Track circuit |
| CN105259461A (en) * | 2015-10-30 | 2016-01-20 | 北京中恒睿科技有限公司 | Work state early-warning method and system for high-voltage insulator of electrical railway |
-
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- 2017-11-13 CN CN201711114760.5A patent/CN108169632B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107447A (en) * | 1988-05-16 | 1992-04-21 | Hitachi, Ltd. | Abnormality diagnosing system and method for a high voltage power apparatus |
| CN102310870A (en) * | 2011-05-16 | 2012-01-11 | 铁道部运输局 | ZPW-2000A track circuit system |
| CN102632911A (en) * | 2012-04-24 | 2012-08-15 | 黑龙江瑞兴科技股份有限公司 | Method for detecting state of tuning area of uninsulated frequency-shift automatic block system |
| CN103552486A (en) * | 2013-11-13 | 2014-02-05 | 北京全路通信信号研究设计院有限公司 | Track circuit |
| CN105259461A (en) * | 2015-10-30 | 2016-01-20 | 北京中恒睿科技有限公司 | Work state early-warning method and system for high-voltage insulator of electrical railway |
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