CN112816915B - Cable breakage detection method and device, computer equipment and storage medium - Google Patents

Cable breakage detection method and device, computer equipment and storage medium Download PDF

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CN112816915B
CN112816915B CN202011556586.1A CN202011556586A CN112816915B CN 112816915 B CN112816915 B CN 112816915B CN 202011556586 A CN202011556586 A CN 202011556586A CN 112816915 B CN112816915 B CN 112816915B
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CN112816915A (en
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卢旭
穆海宝
张浩天
张大宁
张冠军
田杰
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Shenzhen Power Supply Co ltd
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Abstract

The application relates to a method and a device for detecting cable breakage, computer equipment and a storage medium. The method comprises the following steps: acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency; and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum. By adopting the method, the detection rate of the cable damage can be improved and the damage degree of the cable can be accurately judged.

Description

Cable breakage detection method and device, computer equipment and storage medium
Technical Field
The present application relates to the field of power grid technologies, and in particular, to a method and an apparatus for detecting cable breakage, a computer device, and a storage medium.
Background
With the development of urban construction, cable lines occupy greater and greater proportion in power transmission and distribution systems, and the normal operation of the cables is directly related to the development of social economy and the safety of power utilization. However, due to factors such as the working environment of the cable, the cable is often damaged to different degrees, and a great hidden danger is buried for the safe operation of the power system.
However, the existing method for detecting the damage degree of the cable cannot detect the inherent defects of the latent cable defects and the damage degree of the cable, so that the detection rate and the accuracy of the cable damage are low.
Disclosure of Invention
In view of the above, it is desirable to provide a method, an apparatus, a computer device, and a storage medium for detecting a cable breakage, which can improve a detection rate of the cable breakage and accurately determine a degree of breakage of the cable.
A method of detecting cable breakage, the method comprising:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
In one embodiment, the determining the damage degree of the cable to be tested according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum includes:
determining a first distributed inductance value of the damaged cable at a first test frequency according to the distributed inductance spectrum in the first distributed parameter spectrum;
determining a second distribution inductance value of the normal cable at the first test frequency according to the distribution inductance spectrum in the second distribution parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
In one embodiment, the determining the damage degree of the cable to be tested according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum includes:
determining a first distributed conductance value of the damaged cable at a second test frequency according to a distributed conductance spectrum in the first distributed parameter spectrum;
determining a second distributed conductance value of the normal cable at a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value.
In one embodiment, the method further comprises:
when the first distribution inductance value is larger than the second distribution inductance value, obtaining a test cable with a single-core damage degree, and obtaining a third distribution parameter spectrum of the test cable; the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum.
In one embodiment, the method further comprises:
and when the first distribution inductance value is smaller than the second distribution inductance value, executing the step of obtaining a third distribution parameter spectrum of the test cable, wherein the obtained damage degree is the single-core damage test cable.
In one embodiment, the determining the damage degree of the cable to be tested according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum includes:
determining a first distributed capacitance value of the cable to be detected under a third test frequency according to a distributed capacitance spectrum in the first distributed parameter spectrum;
determining a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value.
In one embodiment, the distribution parameter includes a distribution resistance, and before determining the breakage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum, the method further includes:
determining a first distribution resistance value of the cable to be detected under a fourth test frequency according to the distribution resistance spectrum in the first distribution parameter spectrum;
determining a second distribution resistance value of the normal cable under a fourth test frequency according to a distribution resistance spectrum in the second distribution parameter spectrum;
and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a damaged cable.
A device for detecting cable breakage, the device comprising:
the first acquisition module is used for acquiring a first distribution parameter spectrum of the damaged cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the damaged cable and the testing frequency;
the second acquisition module is used for acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the damaged cable; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and the detection module is used for determining the damage degree of the damaged cable according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
According to the method, the device, the computer equipment and the storage medium for detecting the cable damage, the first distribution parameter spectrum of the cable to be detected is obtained; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; and determining the damage degree of the cable to be detected from different dimensions according to the corresponding relation between the distribution parameters and the test frequency in each distribution parameter spectrum based on the first distribution parameter spectrum and the second distribution parameter spectrum, namely judging the damage degree of the cable to be detected by comparing and analyzing the distribution parameter spectrum of the cable to be detected and the distribution parameter spectrum of the normal cable, so that the detection rate of the cable damage is increased, and the damage degree of the cable is accurately judged.
Drawings
FIG. 1 is a diagram of an exemplary embodiment of a method for detecting cable breakage;
FIG. 2 is a schematic flow chart of a method for detecting cable breakage according to one embodiment;
FIG. 3 (a) is a spectrum of distribution parameters of the relationship between the distribution resistance and the test frequency of the damaged cable with different damage degrees in one embodiment;
FIG. 3 (b) is a distribution parameter spectrogram of a corresponding relationship between distribution inductances and test frequencies of damaged cables with different damage degrees in one embodiment;
FIG. 3 (c) is a graph of a distribution parameter indicating a distribution conductance versus test frequency for cables having different degrees of breakage in one embodiment;
FIG. 4 is a schematic flow chart of a method for detecting cable breakage in another embodiment;
FIG. 5 is a distribution parameter spectrogram of a corresponding relationship between distribution capacitances and test frequencies of damaged cables of different damage degrees in one embodiment;
FIG. 6 is a block diagram of a device for detecting a cable breakage according to an embodiment;
FIG. 7 is a diagram of the internal structure of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for detecting the cable breakage can be applied to the application environment shown in fig. 1. Wherein the terminal 102 communicates with the server 104 via a network. The terminal 102 acquires a first distribution parameter spectrum of the cable to be detected from the server 104 through the network; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency; and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, and the server 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.
It should be noted that, in the embodiment of the present application, the test frequency range of the distribution parameter spectrum corresponding to the cable to be tested, the test frequency range of the distribution parameter spectrum corresponding to the normal cable, and the test frequency range of the distribution parameter spectrum corresponding to the test cable are the same. In the embodiment of the present application, the first test frequency, the second test frequency, the third test frequency, and the fourth test frequency are all any frequency value within the test frequency range. It may be clear to those skilled in the art that the first test frequency, the second test frequency, the third test frequency, and the fourth test frequency may be the same, may be completely different, may also be any two or any three of the same, and the embodiment of the present application does not limit this.
In one embodiment, as shown in fig. 2, a method for detecting a cable breakage is provided, which is described by taking the application of the method to the terminal in fig. 1 as an example, and includes the following steps:
step 202, acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency.
The distribution parameter spectrum is used for indicating the corresponding relation between each distribution parameter of the damaged cable and the test frequency, the distribution parameters are used for indicating the parameters of the electric components in the electric network corresponding to the cable, and the distribution parameters at least comprise any one of distribution resistance, distribution inductance, distribution capacitance, distribution conductance and the like; the distribution parameter spectrum corresponding to the distribution parameter comprises a distribution resistance spectrum, a distribution inductance spectrum, a distribution capacitance spectrum, a distribution conductance spectrum and the like. The test frequency is preset, and the test frequencies corresponding to different distribution parameters are different, for example, the test frequency corresponding to the distribution resistance is different from the test frequency corresponding to the distribution inductance.
Specifically, the length of a cable to be detected is obtained, and a corresponding test frequency range is determined according to the length of the cable to be detected; based on the frequency range, testing the head end impedance spectrum of the cable to be detected in an open circuit (load impedance is infinite) state and a short circuit (load impedance is 0) state through a vector network analyzer to obtain the impedance spectrum of the cable to be detected; impedance spectroscopy may be, but is not limited to, electrochemical impedance spectroscopy; and determining a distribution parameter spectrum corresponding to the cable to be detected according to the impedance spectrum. It should be noted that, in the embodiment of the present application, the computer device determines the distribution parameter spectrum according to the impedance spectrum corresponding to the damaged cable, which may be performed by using an existing method or device, and details of the embodiment of the present application are not described herein.
Step 204, acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency.
The attribute information can be but is not limited to the cable model, and the cable model of the corresponding normal cable is determined according to the cable model of the cable to be detected; and acquiring a second distribution parameter spectrum of the target cable (such as the normal cable) from a preset database according to the cable model of the normal cable. The preset database comprises distribution parameter spectrums corresponding to cables of different models, namely impedance spectrums corresponding to the cables of different models are firstly tested after the cables leave a factory or before the cables of different models are installed, then the distribution parameter spectrums corresponding to the cables of different models are determined based on the corresponding impedance spectrums, and all the distribution parameter spectrums are stored in the preset database.
Specifically, the cable model of the cable to be detected is obtained, and a second distribution parameter spectrum of a normal cable of a corresponding model is obtained from a preset database according to the cable model.
And step 206, determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
The damage degree comprises any one of single core damage, double core damage and carries conductive pollutants.
Specifically, a second distribution parameter spectrum of the normal cable corresponding to the first distribution parameter spectrum of the cable to be detected is obtained, and a first distribution resistance value of the cable to be detected under a fourth test frequency is determined according to a distribution resistance spectrum in the first distribution parameter spectrum; determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum; when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a broken cable; and when the cable to be detected is determined to be a damaged cable, further determining the damage degree of the cable to be detected according to other distribution parameters, such as determining the damage degree of the resistor to be detected according to the distributed inductance and the corresponding test frequency, and the distributed inductance and the corresponding test frequency. As shown in fig. 3 (a), which is a distribution parameter spectrogram of a corresponding relationship between distribution resistances and test frequencies of damaged cables with different damage degrees in one embodiment, a curve a represents a distribution resistance spectrum of a perfect cable (normal cable), that is, a distribution resistance spectrum when a cable is not damaged; curve B represents the distribution resistance spectrum when the damage degree of the cable is single core (2 mm) damage; curve C represents the distributed resistance spectrum when the cable is broken with a double core (2 mm) breakage; curve D is the distribution resistance spectrum of the cable with conductive contaminants when the twin core (2 mm) is broken, and the corresponding relationship curves of the distribution resistance and the test frequency in curves B, C and D are almost close, as shown in fig. 3 (a), the distribution resistance value of the normal cable is greater than that of the broken cable at the same test frequency. That is, the cable is damaged, and no matter how the corresponding damage degree is, the distributed resistance value corresponding to the damaged cable is smaller than the distributed resistance value of the normal cable under the same test frequency, that is, whether the cable to be detected is the damaged cable can be determined according to the distributed resistance value.
Optionally, in an embodiment, when the cable to be detected is determined to be a damaged cable, determining a first distributed inductance value of the damaged cable at a first test frequency according to a distribution parameter, that is, a distributed inductance, and according to a distributed inductance spectrum in the first distribution parameter spectrum; determining a second distributed inductance value of the normal cable under the first test frequency according to the distributed inductance spectrum in the second distributed parameter spectrum; determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value; when the first distribution inductance value is smaller than the second distribution inductance value, determining that the damage degree of the cable to be detected is double-core damage and carries conductive pollutants; otherwise, determining the damage degree of the cable to be detected as single core damage or double core damage. As shown in fig. 3 (b), a distribution inductance spectrum of a corresponding relationship between distribution inductances and test frequencies of damaged cables with different damage degrees in one embodiment is shown, where a curve a represents a distribution inductance spectrum of a perfect cable (normal cable), that is, a distribution inductance spectrum when a cable is not damaged; the curve B represents the distributed inductance spectrum when the damage degree of the cable is single core (2 mm) damage; curve C represents the distributed inductance spectrum when the cable is broken with a double core (2 mm) breakage; curve D is the distributed inductance spectrum of the cable when the twin core (2 mm) is broken and carries conductive contaminants. As shown in fig. 3 (b), when the damaged cable is damaged in a single core or in a double core, the distributed inductance value of the damaged cable at any test frequency is larger than that of the normal cable at the same test frequency; when the damage degree of the damaged cable is double-core damage and has conductive pollutants, the distributed inductance value of the damaged cable at any test frequency is smaller than that of the normal cable at the same test frequency; the method comprises the steps that firstly, the damage degree of a damaged cable is preliminarily determined to be one of double-core damage and conductive pollutants, single-core damage or double-core damage through a distributed inductance spectrum corresponding to the damaged cable and a distributed inductance spectrum corresponding to a normal cable; that is, in the case that the distributed inductance value of the broken cable at the first test frequency is smaller than that of the normal cable at the first test frequency, it is determined that the broken degree of the broken cable is a two-core breakage and carries conductive contaminants; otherwise, determining the breakage degree of the broken cable as one of single core breakage or double core breakage.
Optionally, in an embodiment, when the cable to be detected is determined to be a damaged cable, determining a first distributed conductance value of the damaged cable at a second test frequency according to a distribution parameter, that is, a distributed conductance, and a distributed conductance spectrum in the first distributed parameter spectrum; determining a second distributed conductance value of the normal cable at a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum; determining the damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value, namely determining the damage degree of the cable to be detected as double-core damage and conductive pollutants when the first distributed inductance value is larger than the second distributed inductance value; otherwise, determining the damage degree of the cable to be detected as single core damage or double core damage.
As shown in fig. 3 (c), which is a distributed conductance spectrum of the corresponding relationship between the distributed conductance of the damaged cable and the testing frequency according to the embodiment with different damage degrees, curve a represents the distributed conductance spectrum of the intact cable (normal cable), i.e. the distributed conductance spectrum when the cable is not damaged; curve B represents the distribution conductance spectrum when the damage degree of the cable is single core (2 mm) damage; curve C represents the distributed conductivity spectrum when the cable is damaged with double cores (2 mm); curve D is the distributed conductance spectrum of the cable when the twin core (2 mm) is broken and with conductive contaminants; as shown in fig. 2 (c), when the damaged cable is damaged in a single core or in a double core, the distributed conductance of the damaged cable at any test frequency is smaller than that of the normal cable at the same test frequency. And when the damage degree of the damaged cable is double-core damage and is provided with conductive pollutants, the distributed conductance value of the damaged cable at any test frequency is greater than that of the normal cable at the same test frequency. Further, determining a distributed conductance value of the damaged cable at a second test frequency in a distributed conductance spectrum corresponding to the damaged cable; determining the distributed conductance value of the normal cable under a second test frequency in the distributed conductance spectrum corresponding to the normal cable; namely, comparing the distribution conductance value of the normal cable under the second test frequency with the distribution conductance value of the damaged cable under the second test frequency; under the condition that the distributed conductance value of the damaged cable at the second test frequency is larger than that of the normal cable at the second test frequency, determining that the damage degree of the damaged cable is double-core damage and carries conductive pollutants; otherwise, determining the damage degree of the damaged cable as single core damage or double core damage. When the damage degree of the cable to be detected is determined to be double-core damage and conductive pollutants, sending prompt information of the double-core damage and the conductive pollutants to a terminal where a maintainer is located, and informing the maintainer to overhaul the damaged cable; if the damage degree of the damaged cable is determined to be single core damage or double core damage, the damage degree of the damaged cable needs to be continuously detected.
In the method for detecting the cable damage, a first distribution parameter spectrum of a cable to be detected is obtained; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; and determining the damage degree of the cable to be detected from different dimensions according to the corresponding relation between the distribution parameters and the test frequency in each distribution parameter spectrum based on the first distribution parameter spectrum and the second distribution parameter spectrum, namely judging the damage degree of the cable to be detected by comparing and analyzing the distribution parameter spectrum of the cable to be detected and the distribution parameter spectrum of the normal cable, so that the detection rate of the cable damage is increased, and the damage degree of the cable is accurately judged.
In another embodiment, as shown in fig. 4, a method for detecting a cable breakage is provided, which is described by taking the application of the method to the terminal in fig. 1 as an example, and includes the following steps:
and 402, when the first distributed inductance value is larger than the second distributed inductance value, obtaining the test cable with the damage degree being single-core damage, and obtaining a third distributed parameter spectrum of the test cable.
And the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency.
Specifically, when the first distributed inductance value is greater than the second distributed inductance value, and the damage degree of the damaged cable is single-core damage or double-core damage, the damage degree of the damaged cable needs to be continuously detected, that is, the length of the test cable is obtained, and the corresponding test frequency range is determined according to the length of the test cable; based on the frequency range, testing a head end impedance spectrum of the cable to be detected in an open circuit (load impedance is infinite) state and a short circuit (load impedance is 0) state through a vector network analyzer to obtain an impedance spectrum of the cable to be detected; impedance spectroscopy may be, but is not limited to, electrochemical impedance spectroscopy; and determining a distribution parameter spectrum corresponding to the test cable, namely a third distribution parameter spectrum according to the impedance spectrum. Optionally, when the first distributed inductance value is greater than the second distributed inductance value, the cable with the damaged degree of double-core damage can be selected for auxiliary detection, and the specific detection process is similar to or the same as the detection process when the test cable is single-core damage, which is not repeated herein in this embodiment of the present application.
Alternatively, in one embodiment, when the first distributed inductance value is smaller than the second distributed inductance value, the test cable with the broken degree of single core is obtained, a third distribution parameter spectrum of the test cable is obtained, and step 404 is executed. That is, when the first distribution inductance value is smaller than the second distribution inductance value, the damage degree of the damaged cable is single-core damaged or double-core damaged, the damage degree of the damaged cable needs to be continuously detected, the test cable with the damage degree being single-core damaged is obtained, the third distribution parameter spectrum of the test cable is obtained, and step 404 is executed.
And step 404, determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum.
Specifically, after the third distribution parameter spectrum of the test cable is determined, the damage degree of the cable to be detected may be further detected, and optionally, the damage degree of the cable to be detected is determined according to the distribution parameter distributed inductance and the first test frequency, that is, the third distribution inductance value of the test cable at the first test frequency is determined according to the distribution inductance spectrum in the third distribution parameter spectrum; determining the damage degree of the cable to be detected according to the third distribution inductance value and the first distribution inductance value, namely comparing the third distribution inductance value of the cable to be detected under the first test frequency with the first distribution inductance value of the cable to be detected under the first test frequency, and determining the damage degree of the cable to be detected as double-core damage under the condition that the third distribution inductance value is greater than the first distribution inductance value of the damaged cable under the first test frequency; otherwise, determining the breakage degree of the cable to be detected as single-core breakage.
Optionally, determining the damage degree of the cable to be detected according to the distributed conductance of the distributed parameters and the second test frequency, that is, determining a third distributed conductance value of the test cable at the second test frequency according to a distributed conductance spectrum in a third distributed parameter spectrum; determining the damage degree of the cable to be detected according to the third distributed conductance value and the first distributed conductance value, namely determining the damage degree of the cable to be detected as double-core damage when the third distributed conductance value is greater than the first distributed conductance value; and when the third distribution conductance value is smaller than the first distribution conductance value, determining the damage degree of the cable to be detected as single-core damage.
Optionally, when determining that the damage degree of the cable to be detected is single-core damage or double-core damage, the distributed capacitance spectrums corresponding to the cable to be detected and the test cable are also required to be compared, as shown in fig. 5, the distributed capacitance spectrums are distribution parameter spectrograms of the corresponding relationship between the distributed capacitance and the test frequency of the damaged cable with different damage degrees in one embodiment, and the curve a represents the distributed capacitance spectrum of a perfect cable (normal cable), that is, the distributed capacitance spectrum when the cable is not damaged; the curve B represents the distribution capacitance spectrum when the damage degree of the cable is single-core damage; curve C represents the distributed capacitance spectrum of the cable with double-core damage; curve D is the distributed capacitance spectrum of the cable when the twin core is broken and with conductive contaminants. As shown in fig. 5, the distributed capacitance value of the test cable (with the single-core damage) at any test frequency is smaller than that of the double-core damaged cable at the same test frequency. When the damaged degree that confirms to treat the cable is single core damaged or twin-core damaged, still need treat the distributed capacitance spectrum that detects cable and test cable correspond and compare, include: determining the damage degree of the cable to be detected according to the distributed parameter distributed capacitance and the third test frequency, namely determining a first distributed capacitance value of the cable to be detected under the third test frequency according to a distributed capacitance spectrum in the first distributed parameter spectrum; determining a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum; determining the damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value; wherein according to first distribution capacitance value and third distribution capacitance value, confirm to detect the damaged degree of cable, include: when the third distribution capacitance value is smaller than the first distribution capacitance value, determining the damage degree of the cable to be detected as double-core damage; and when the third distribution capacitance value is larger than the first distribution capacitance value, determining that the damage degree of the cable to be detected is single-core damage.
It should be noted that the damage degree of the damaged cable can be determined as the double-core damage only when the first distribution inductance value of the cable to be detected under the first test frequency is smaller than the third distribution inductance value of the test cable under the first test frequency, the first distribution conductance value of the cable to be detected under the second test frequency is smaller than the third distribution conductance value of the test cable under the second test frequency, and the first distribution capacitance value of the cable to be detected under the third test frequency is larger than the third distribution capacitance value of the test cable under the third test frequency.
In one embodiment, a first distributed resistance value of the cable to be detected at a fourth test frequency is determined according to a distributed resistance spectrum in the first distributed parameter spectrum; determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum; and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a broken cable.
According to the distributed inductance spectrum and the first test frequency, and the distributed conductance spectrum and the second test frequency in the first distributed parameter spectrum and the second distributed parameter spectrum, the damage degree of the cable can be detected to be double-core damage and conductive pollutants are brought; when detecting that first distributed inductance value is greater than second distributed inductance value or first distributed inductance value is less than second distributed inductance value, the damaged degree of damaged cable is single core damage or two core damage, then need continue to detect the damaged degree of damaged cable, through confirming that the damaged degree of test cable is single core damage, obtain the third distribution parameter register of test cable, treat that the cable degree of detecting carries out further detection, it is single core damage or two core damage to accurately confirm to detect the cable, adopt the distributed resistance register that detects the cable correspondence and the distributed resistance register that normal cable corresponds of detecting, confirm that damaged cable has really appeared, when confirming to detect the cable and have the damage, the distributed capacitance register, distributed inductance register and distributed conductivity register of cable are synthesized and compared, confirm the damaged degree of damaged cable, improve the detection rate of cable damage and accurately judge the damaged degree of cable.
In the method for detecting the cable damage, when the first distribution inductance value is larger than the second distribution inductance value or the first distribution inductance value is smaller than the second distribution inductance value, the damage degree of the damaged cable is single-core damage or double-core damage, the damage degree of the damaged cable needs to be continuously detected, a third distribution parameter spectrum of the tested cable is obtained by determining the damage degree of the tested cable as single-core damage, and the degree of the cable to be detected is further detected, wherein the damage degree of the damaged cable is determined as double-core damage under the condition that the third distribution conductance value of the tested cable under the second test frequency is larger than the distribution conductance value of the cable to be detected under the second test frequency; otherwise, determining the damage degree of the damaged cable as single-core damage; determining the damage degree of the damaged cable as double-core damage under the condition that the third distribution capacitance value of the test cable at the third test frequency is smaller than the first distribution capacitance value of the cable to be detected at the third test frequency; otherwise, determining the damage degree of the damaged cable as single-core damage; and be less than the third distribution inductance value of test cable under first test frequency at the first distribution inductance value of cable under first test frequency of waiting to detect, and, it is less than the third distribution conductance value of test cable under second test frequency to wait to detect the first distribution conductance value of cable under second test frequency, and when waiting to detect the first distribution capacitance value of cable under third test frequency and be greater than the third distribution capacitance value of test cable under third test frequency, just can confirm that the damaged degree of damaged cable appears for the two-core damage, consider the distributed resistance spectrum promptly, the distributed inductance spectrum, distributed capacitance spectrum and distributed conductance spectrum, confirm that damaged cable appears damaged, and confirm the damaged degree of damaged cable, improve the damaged relevance ratio of cable breakage and the damaged degree of accurate judgement cable.
It should be understood that, although the steps in the flowcharts of fig. 2 and 4 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 2 and 4 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages in other steps.
In one embodiment, as shown in fig. 6, there is provided a cable breakage detecting apparatus including: a first obtaining module 602, a second obtaining module 604, and a detecting module 606, wherein:
a first obtaining module 602, configured to obtain a first distribution parameter spectrum of a damaged cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the damaged cable and the testing frequency.
A second obtaining module 604, configured to obtain a second distribution parameter spectrum of a corresponding normal cable from a preset database according to the attribute information of the damaged cable; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency.
The detecting module 606 is configured to determine the damage degree of the damaged cable according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
The detection device for the cable damage obtains a first distribution parameter spectrum of a cable to be detected; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; and determining the damage degree of the cable to be detected from different dimensions according to the corresponding relation between the distribution parameters and the test frequency in each distribution parameter spectrum based on the first distribution parameter spectrum and the second distribution parameter spectrum, namely judging the damage degree of the cable to be detected by comparing and analyzing the distribution parameter spectrum of the cable to be detected and the distribution parameter spectrum of the normal cable, so that the detection rate of the cable damage is increased, and the damage degree of the cable is accurately judged.
In another embodiment, a cable breakage detection apparatus is provided, which comprises a determination module and a third acquisition module in addition to the first acquisition module 602, the second acquisition module 604 and the detection module 606, wherein:
and the determining module is used for determining a first distributed inductance value of the damaged cable at a first test frequency according to the distributed inductance spectrum in the first distributed parameter spectrum.
The determining module is further used for determining a second distributed inductance value of the normal cable at the first test frequency according to the distributed inductance spectrum in the second distributed parameter spectrum.
The detecting module 606 is further configured to determine a damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
The determining module is further used for determining a first distributed conductance value of the damaged cable at a second testing frequency according to the distributed conductance spectrum in the first distributed parameter spectrum.
The determining module is further used for determining a second distributed conductance value of the normal cable under a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum.
The detecting module 606 is further configured to determine a damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value.
The third acquisition module is used for acquiring the test cable with the damaged degree of a single core when the first distribution inductance value is larger than the second distribution inductance value, and obtaining a third distribution parameter spectrum of the test cable; the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency.
The detection module 606 is further configured to determine, based on the first distribution parameter spectrum and the third distribution parameter spectrum, a damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency.
The third obtaining module is further used for executing the step of obtaining a third distribution parameter spectrum of the test cable with the damage degree being the single-core damage when the first distribution inductance value is smaller than the second distribution inductance value.
The determining module is further used for determining a first distributed capacitance value of the cable to be detected under a third testing frequency according to the distributed capacitance spectrum in the first distributed parameter spectrum.
The determining module is further configured to determine a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum.
The detecting module 606 is further configured to determine a damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value.
The determining module is further used for determining a first distribution resistance value of the cable to be detected under a fourth testing frequency according to the distribution resistance spectrum in the first distribution parameter spectrum.
The determining module is further used for determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum.
The detecting module 606 is further configured to determine that the cable to be detected is a damaged cable when the first distribution resistance value is smaller than the second distribution resistance value.
In one embodiment, a first distributed resistance value of the cable to be detected at a fourth test frequency is determined according to a distributed resistance spectrum in the first distributed parameter spectrum; determining a second distribution resistance value of the normal cable under a fourth test frequency according to a distribution resistance spectrum in the second distribution parameter spectrum; and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a broken cable. According to the distributed inductance spectrum and the first test frequency, and the distributed conductance spectrum and the second test frequency in the first distributed parameter spectrum and the second distributed parameter spectrum, the damage degree of the cable can be detected to be double-core damage and conductive pollutants are brought; when detecting that first distributed inductance value is greater than second distributed inductance value or first distributed inductance value is less than second distributed inductance value, the damaged degree of damaged cable is single core damage or two core damage, then need continue to detect the damaged degree of damaged cable, through confirming that the damaged degree of test cable is single core damage, obtain the third distribution parameter register of test cable, treat that the cable degree of detecting carries out further detection, it is single core damage or two core damage to accurately confirm to detect the cable, adopt the distributed resistance register that detects the cable correspondence and the distributed resistance register that normal cable corresponds of detecting, confirm that damaged cable has really appeared, when confirming to detect the cable and have the damage, the distributed capacitance register, distributed inductance register and distributed conductivity register of cable are synthesized and compared, confirm the damaged degree of damaged cable, improve the detection rate of cable damage and accurately judge the damaged degree of cable.
In one embodiment, there is provided a cable breakage detection system comprising: first acquisition module, second acquisition module and detection module, wherein: the first acquisition module is used for acquiring a first distribution parameter spectrum of the damaged cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the damaged cable and the testing frequency. The second acquisition module is used for acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the damaged cable; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency. And the detection module is used for determining the damage degree of the damaged cable according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
The detection system for the cable damage obtains a first distribution parameter spectrum of a cable to be detected; acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; based on the first distribution parameter spectrum and the second distribution parameter spectrum, the damage degree of the cable to be detected is determined from different dimensions according to the corresponding relation between the distribution parameters and the test frequency in each distribution parameter spectrum, the damage degree of the cable to be detected is judged by comparing and analyzing the distribution parameter spectrum of the cable to be detected and the distribution parameter spectrum of the normal cable, and the detection rate of the cable damage is improved and the damage degree of the cable is accurately judged.
For specific limitations of the cable breakage detection device and system, reference may be made to the above limitations of the cable breakage detection method, and details thereof are not repeated here. Each module in the cable breakage detection device and each module in the cable breakage detection system can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 7. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the computer device is used for communicating with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of detecting a cable breakage. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
In one embodiment, the processor when executing the computer program further performs the steps of:
determining a first distributed inductance value of the damaged cable at a first test frequency according to a distributed inductance spectrum in the first distributed parameter spectrum;
determining a second distributed inductance value of the normal cable under the first test frequency according to the distributed inductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a first distributed conductance value of the damaged cable at a second test frequency according to the distributed conductance spectrum in the first distributed parameter spectrum;
determining a second distributed conductance value of the normal cable at a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value.
In one embodiment, the processor when executing the computer program further performs the steps of:
when the first distribution inductance value is larger than the second distribution inductance value, obtaining a test cable with a single-core damage degree, and obtaining a third distribution parameter spectrum of the test cable; the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum.
In one embodiment, the processor when executing the computer program further performs the steps of:
and when the first distribution inductance value is smaller than the second distribution inductance value, executing the step of obtaining a third distribution parameter spectrum of the test cable, wherein the damage degree of the test cable is the damage of a single core.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a first distributed capacitance value of the cable to be detected under a third test frequency according to the distributed capacitance spectrum in the first distributed parameter spectrum;
determining a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a first distribution resistance value of the cable to be detected under a fourth test frequency according to a distribution resistance spectrum in the first distribution parameter spectrum;
determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum;
and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a broken cable.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a first distributed inductance value of the damaged cable at a first test frequency according to the distributed inductance spectrum in the first distributed parameter spectrum;
determining a second distributed inductance value of the normal cable under the first test frequency according to the distributed inductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a first distributed conductance value of the damaged cable at a second test frequency according to the distributed conductance spectrum in the first distributed parameter spectrum;
determining a second distributed conductance value of the normal cable at a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value.
In one embodiment, the computer program when executed by the processor further performs the steps of:
when the first distribution inductance value is larger than the second distribution inductance value, obtaining a test cable with a single-core damage degree, and obtaining a third distribution parameter spectrum of the test cable; the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and when the first distribution inductance value is smaller than the second distribution inductance value, executing the step of obtaining a third distribution parameter spectrum of the test cable, wherein the damage degree of the test cable is the damage of a single core.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a first distributed capacitance value of the cable to be detected under a third test frequency according to the distributed capacitance spectrum in the first distributed parameter spectrum;
determining a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a first distribution resistance value of the cable to be detected under a fourth test frequency according to the distribution resistance spectrum in the first distribution parameter spectrum;
determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum;
and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a broken cable.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware that is instructed by a computer program, and the computer program may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method of detecting a cable failure, the method comprising:
acquiring a first distribution parameter spectrum of a cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the cable to be detected and the test frequency;
acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the cable to be detected; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
determining the damage degree of the cable to be detected according to the distribution parameters and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum; wherein, the distribution parameter includes distributed inductance, the cable to be detected is a damaged cable, the damage degree of the cable to be detected is determined according to each distribution parameter and corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum, and the method includes:
determining a first distributed inductance value of the damaged cable at a first test frequency according to the distributed inductance spectrum in the first distributed parameter spectrum;
determining a second distributed inductance value of the normal cable at a first test frequency according to the distributed inductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
2. The method according to claim 1, wherein said determining the degree of breakage of the cable to be tested from the first distributed inductance value and the second distributed inductance value comprises:
when the first distribution inductance value is larger than the second distribution inductance value, obtaining a test cable with a single-core damage degree, and obtaining a third distribution parameter spectrum of the test cable; the third distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the test cable and the test frequency;
and determining the damage degree of the cable to be detected according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum.
3. The method according to claim 1, wherein said determining the degree of breakage of the cable to be tested from the first distributed inductance value and the second distributed inductance value comprises:
and when the first distribution inductance value is smaller than the second distribution inductance value, the damage degree of the cable to be detected is double-core damage and conductive pollutants are contained.
4. The method according to claim 1, wherein the distribution parameters include a distribution conductance, the cable to be detected is a broken cable, and the determining the degree of breakage of the cable to be detected according to each of the distribution parameters and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum comprises:
determining a first distributed conductance value of the damaged cable at a second test frequency according to the distributed conductance spectrum in the first distributed parameter spectrum;
determining a second distributed conductance value of the normal cable at a second test frequency according to the distributed conductance spectrum in the second distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distributed conductance value and the second distributed conductance value.
5. The method of claim 2, wherein the distribution parameters include a distributed capacitance, and wherein determining the degree of damage to the cable to be tested from each of the distribution parameters and the corresponding test frequency based on the first distribution parameter spectrum and the third distribution parameter spectrum comprises:
determining a first distributed capacitance value of the cable to be detected under a third test frequency according to the distributed capacitance spectrum in the first distributed parameter spectrum;
determining a third distributed capacitance value of the test cable at a third test frequency according to the distributed capacitance spectrum in the third distributed parameter spectrum;
and determining the damage degree of the cable to be detected according to the first distribution capacitance value and the third distribution capacitance value.
6. The method of claim 1, wherein the distribution parameter comprises a distribution resistance, and wherein before determining the degree of damage of the cable to be tested from each of the distribution parameters and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum, the method further comprises:
determining a first distribution resistance value of the cable to be detected under a fourth test frequency according to the distribution resistance spectrum in the first distribution parameter spectrum;
determining a second distribution resistance value of the normal cable at a fourth test frequency according to the distribution resistance spectrum in the second distribution parameter spectrum;
and when the first distribution resistance value is smaller than the second distribution resistance value, determining that the cable to be detected is a damaged cable.
7. A device for detecting cable breakage, the device comprising:
the first acquisition module is used for acquiring a first distribution parameter spectrum of the damaged cable to be detected; the first distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the damaged cable and the testing frequency;
the second acquisition module is used for acquiring a second distribution parameter spectrum of the corresponding normal cable from a preset database according to the attribute information of the damaged cable; the second distribution parameter spectrum is used for indicating the corresponding relation between the distribution parameters of the normal cable and the test frequency;
the detection module is used for determining the damage degree of the damaged cable according to each distribution parameter and the corresponding test frequency based on the first distribution parameter spectrum and the second distribution parameter spectrum; the distribution parameters comprise distribution inductance, and the cable to be detected is a damaged cable;
the determining module is used for determining a first distributed inductance value of the damaged cable at a first test frequency according to the distributed inductance spectrum in the first distributed parameter spectrum;
determining a second distribution inductance value of the normal cable at the first test frequency according to the distribution inductance spectrum in the second distribution parameter spectrum;
the detection module is further used for determining the damage degree of the cable to be detected according to the first distributed inductance value and the second distributed inductance value.
8. The apparatus of claim 7, wherein the detection module is further configured to detect a breakage of the cable to be detected as a two-core breakage and a conductive contaminant when the first distributed inductance value is less than the second distributed inductance value.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 6.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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DE29505412U1 (en) * 1995-03-30 1996-05-02 Siemens AG, 80333 München Device for electrically isolated cable break detection in digital transmission links with symmetrical transmission, in particular for digital position transducers
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