CN109142877B - Wire and cable quality detection method, device, equipment and storage medium - Google Patents
Wire and cable quality detection method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a wire and cable quality detection method, which can be used for acquiring the resistance and the length of the whole wire and cable to be detected, then realizing the detection of the quality of the whole wire and cable to be detected according to the resistivity of the whole wire and cable to be detected, and further improving the detection accuracy and the safety of an electric power system compared with the traditional method of only acquiring a small part of the wire and cable to be detected. On the other hand, the method can acquire the quality resistance and length of the wire and cable to be detected in use in the construction site, and then realizes the quality detection of the wire and cable to be detected in the construction site by calculating the resistivity of the wire and cable to be detected in use at present, thereby overcoming the problem that the traditional detection method can not detect the quality of the wire and cable installed in the construction site, and further improving the safety of the power system. In addition, the invention also discloses a wire and cable quality detection device, equipment and a readable storage medium, and the effects are as above.
Description
Technical Field
The invention relates to the field of wire and cable application, in particular to a wire and cable quality detection method, a device, equipment and a storage medium.
Background
The wire and cable is the main carrier of electric energy transmission, and the safety and reliability of wire and cable are the basis of guaranteeing power supply stability. However, the proportion of the conductor cost in the whole wire cable is high, so that the wire cable on the market at present generally has the problems of poor conductor material, insufficient cross section and the like. Poor quality of the electric wire not only reduces the current carrying capacity of the electric wire, but also may cause fire due to serious heat generation. Therefore, how to detect the quality of the electric wire and the electric cable is very important.
At present, the quality of the whole wire cable to be detected is mainly detected in a laboratory environment by intercepting a small part of the whole wire cable to be detected, and because the detection mode represents all the wire cables locally, the detection accuracy is low, so that the wire cable detected in a laboratory still has serious quality problems when being finally used in a construction field, and the safety of a power system is further influenced; in addition, because the wire and cable terminal used in the construction site is formed, and the conductor is wrapped in the terminal, it is difficult to detect the conductor material in the wire and cable by the conventional detection method in the laboratory, that is, the traditional detection method can only detect the quality of the wire and cable which is not installed and used, but cannot detect the quality of the wire and cable which is installed in the construction site. The wire and cable used at the final construction site still have serious quality problems.
Therefore, the problem of how to detect the quality of the wires and cables installed in the construction site to improve the safety of the power system is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the application provides a method, a device, equipment and a storage medium for detecting the quality of a wire and a cable, and aims to solve the problem of how to detect the quality of the wire and the cable on site to improve the safety of a power system in the prior art.
In order to solve the technical problem, the invention provides a method for detecting the quality of a wire and a cable, which comprises the following steps:
acquiring the resistance of the whole wire cable to be detected and the length of the whole wire cable to be detected;
calculating the resistivity of the whole wire cable to be detected according to the resistance and the length;
judging whether the resistivity is in a preset range or not;
if yes, determining that the whole corresponding wire cable to be detected meets the requirements;
and if not, determining that the whole corresponding wire cable to be detected does not meet the requirements.
Preferably, the acquiring the resistance of the whole currently used cable to be tested specifically includes:
and obtaining the resistance according to a four-electrode method and an opposite-end short-circuit method.
Preferably, the length of the whole cable to be tested is obtained by:
the length is obtained by controlling the pulse signal generator and the pulse signal receiver.
Preferably, the pulse signal generator is specifically a CN61M/MTPG pulse signal generator.
Preferably, the pulse signal receiver is in particular a gmg.
In order to solve the above technical problem, the present invention further provides a device corresponding to the method for detecting the quality of the electric wire, including:
the acquisition module is used for acquiring the resistance of the whole wire cable to be detected and the length of the whole wire cable to be detected;
the calculation module is used for calculating the resistivity of the whole wire cable to be detected according to the resistance and the length;
the judging module is used for judging whether the resistivity is in a preset range, and if so, the first determining module is triggered; if not, triggering a second determination module;
the first determining module is used for determining that the whole corresponding wire cable to be detected meets the requirements;
and the second determining module is used for determining that the whole corresponding wire and cable to be detected does not meet the requirements.
Preferably, the obtaining module is specifically configured to obtain the length by controlling a pulse signal generator and a pulse signal receiver.
Preferably, the obtaining module is specifically configured to obtain the resistance according to a four-electrode method and an opposite-end short-circuit method.
In order to solve the above technical problem, the present invention further provides a device corresponding to the method for detecting the quality of the electric wire, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of any one of the above-mentioned wire and cable quality detection methods.
In order to solve the above technical problem, the present invention further provides a computer-readable storage medium corresponding to the wire and cable quality detection method, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement any one of the steps of the wire and cable quality detection method.
Compared with the prior art, the wire and cable quality detection method provided by the invention has the advantages that on one hand, the resistance and the length of the whole wire and cable to be detected can be obtained, then the quality of the whole wire and cable to be detected can be detected according to the resistivity of the whole wire and cable to be detected, and compared with the traditional method of only obtaining a small part of the wire and cable to be detected for detection, the detection accuracy and the safety of a power system are further improved. On the other hand, the resistance and the length of the wire and cable to be detected which are currently used are obtained by the detection method, namely, the resistance and the length of the quality of the wire and cable to be detected which are currently used in a construction site can be obtained, the detection of the quality of the wire and cable to be detected in the construction site is realized by calculating the resistivity of the wire and cable to be detected which are currently used, the problem that the quality of the wire and cable which are installed in the construction site cannot be detected by the traditional detection method is solved, and the safety of an electric power system is further improved. In addition, the invention also provides a wire and cable quality detection device, equipment and a readable storage medium, and the effects are as above.
Drawings
Fig. 1 is a flowchart of a method for detecting quality of a wire and a cable according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a connection mode of an entire cable to be tested according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating an exemplary embodiment of an apparatus for testing quality of a wire and a cable;
fig. 4 is a schematic composition diagram of a device for detecting quality of a wire and a cable according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 core of the invention is to provide a method, a device, equipment and a storage medium for detecting the quality of electric wires and cables, which can solve the problem of how to detect the quality of electric wires and cables on site to improve the safety of a power system in the prior art.
In order that those skilled in the art will better understand the concept of the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.
Fig. 1 is a flowchart of a method for detecting quality of a wire and a cable according to an embodiment of the present invention, as shown in fig. 1, the method includes:
s101: and acquiring the resistance of the whole wire cable to be detected and the length of the whole wire cable to be detected.
Firstly, acquiring the resistance of the whole wire cable to be detected currently used;
specifically, the voltage of the whole wire cable to be detected which is installed in the construction site can be obtained according to the voltmeter, then the current of the whole wire cable to be detected which is installed in the construction site is obtained by the ammeter, and finally the resistance of the whole wire cable to be detected is calculated according to the ohm law. The resistance measurement of the whole wire cable to be detected is realized by utilizing the voltmeter and the ammeter, and the operation is simple and convenient.
Fig. 2 is a schematic diagram of a connection mode of an entire wire and cable to be detected provided in an embodiment of the present invention, as shown in fig. 2, because it is considered that an entire wire and cable 20 in a construction site is already laid, and it is difficult to directly measure a single phase when the length of the entire wire and cable 20 is too long, as a preferred embodiment, obtaining the resistance of the entire wire and cable 20 to be detected is specifically: and obtaining the resistance according to a four-electrode method and an opposite-end short-circuit method.
In practical application, the whole electric wire 20 to be detected has three-phase cables, and the process is described in detail by taking the measurement of the resistance of one-phase cable in the whole electric wire 20 to be detected as an example, fig. 2 shows a resistance measurement mode of an a-phase cable in the whole electric wire 20 to be detected, and firstly, the AC-phase cable and the AB-phase cable at the first end 1 of the whole electric wire 20 to be detected are separately short-circuited; then, applying a proper direct current I between the AC phase cables at the second end 2 of the whole wire cable 20 to be detected, namely, connecting an ammeter A1 between the AC phase cables, and taking the B phase cable at the second end 2 of the whole wire cable 20 to be detected as a voltage measuring lead end, namely, connecting a voltmeter V between the AB phase cables, and measuring the voltage U at the two ends of the A phase cable; and then, determining the resistance value of the A-phase cable through ohm's law, wherein the calculation formula is as follows:
the resistance calculation of other two-phase cables is the same as that of the other two-phase cables, and is not repeated herein, and the resistance of the whole to-be-detected wire cable 20 can be obtained in this way, so that the influence of other contact resistances can be effectively avoided. Of course, in practical application, besides the measurement of the resistance of the whole wire and cable 20 to be detected by using the ammeter and the voltmeter, the measurement of the resistance of the whole wire and cable 20 to be detected can be realized by using other instruments meeting the requirements, for example, the resistance of the whole wire and cable 20 to be detected is directly measured by using the resistance measuring instrument, which is not described herein again.
Secondly, the length of the whole cable to be detected which is used currently is obtained;
as a preferred embodiment, the length of the wire and cable to be detected is obtained by: the length is obtained by controlling the pulse signal generator and the pulse signal receiver. The accuracy of the length of the wire and the cable to be detected is high, and the method is simple and convenient to use.
Specifically, firstly, a pulse signal generator and a pulse signal receiver are installed at a first end of an electric wire cable to be detected, and then the pulse signal generator is controlled to inject a low-voltage pulse signal with a certain frequency between a conductor and a shielding layer at the first end of the electric wire cable to be detected, as a preferred embodiment, the pulse signal generator can be selected from a CN61M/MTPG pulse signal generator; the pulse signal receiver can be selected from GMG. In practical application, the pulse width injected can be adjusted according to the approximate length of the whole wire to be detected; when the low pressure pulse signal in the whole wire cable of examining to examine electric wire meets the unmatched point of wave impedance, can produce the reflection, return to the pulse signal receiver of the whole wire cable of examining to examine first end department of electric wire cable, then can send received reflection signal to relevant processing module and carry out analysis processes, realize length measurement through the time difference that detects reflection signal and transmission signal, finally obtain the whole length of examining to examine electric wire cable, the length computational formula is as follows:
Δt＝t2-t1
where Δ t is the time difference between the transmitted signal and the first reflected signal or two adjacent reflected signals, t1And t2The time difference between two adjacent signals or the sending time of a transmitted signal and the receiving time of the first reflected signal are respectively received, and v is the propagation speed of the signal in the electric wire and the cable. The length accuracy of the whole wire cable to be detected acquired by adopting the method is high. Of course, except for adopting the pulse method to obtain the length of the whole wire cable to be detected, the length of the corresponding wire cable can be obtained through other modes before the whole wire cable is used, then the mark is made at a certain position of the wire cable, the later period is directly used, and the specific adoption of which mode is realized can be realized according to the actual situationThe present invention is not limited to the case determination.
And calculating the resistivity of the whole cable to be detected according to the resistance and the length.
After the resistance and the length of the whole wire cable to be detected are obtained, the resistivity of the whole wire cable to be detected can be calculated according to a formula:
wherein R is the resistivity of the whole wire cable to be tested, R is the resistance of the whole wire cable to be tested obtained by field test, and S is the length of the whole wire cable to be tested.
S103: and judging whether the resistivity is in a preset range, if so, entering step S104, and if not, entering step S105.
S104: determining that the corresponding wire cable to be detected meets the requirements;
s105: and determining that the corresponding wire and cable to be detected does not meet the requirements.
After the electric conductivity of the whole wire cable to be detected is calculated, whether the electric resistivity is in a preset range or not is judged, the preset range can be determined according to actual conditions, when the calculated electric conductivity of the whole wire cable to be detected is in the preset range, the quality of the whole wire cable to be detected is satisfied, and when the calculated electric conductivity of the whole wire cable to be detected is not in the preset range, the quality of the whole wire cable to be detected is not satisfied. In practical application, in order to facilitate the relevant personnel to timely know the quality detection condition of the whole wire cable to be detected, after the corresponding whole wire cable to be detected is determined not to meet the requirements, the relevant modules can be controlled to display corresponding prompt information. For example, a message indicating that the quality of the wire and cable is not satisfactory and that the wire and cable should be processed is displayed. After the corresponding wire cable to be detected meets the requirements, corresponding prompt information can be displayed. For example, a prompt message of "the quality of the electric wire and cable meets the requirement, please use it securely" is displayed, and of course, in practical application, the alarm device may be controlled to alarm and prompt related personnel, and what kind of mode is specifically adopted for prompting may be determined according to practical situations, which is not limited in the present invention.
In the prior art, the quality of wires and cables which are not put into use can be detected only in a laboratory environment, the quality of the whole wire and cable can be evaluated only according to the quality of local wires and cables, and the detection accuracy is low, so that the wires and cables which are finally used in a construction site still have serious quality problems, and the safety of a power system can be influenced. The quality detection method for the electric wires and the cables can detect the quality of the whole electric wires and the cables to be detected, can also detect the quality of the electric wires and the cables used in a construction site, and further improves the safety of an electric power system.
According to the quality detection method for the electric wire and the electric cable, on one hand, the resistance and the length of the whole electric wire and the electric cable to be detected can be obtained, then the quality of the whole electric wire and the electric cable to be detected can be detected according to the resistivity of the whole electric wire and the electric cable to be detected, and compared with the traditional method that only a small part of the electric wire and the electric cable to be detected is obtained for detection, the detection accuracy and the safety of an electric power system are improved. On the other hand, the resistance and the length of the wire and cable to be detected which are currently used are obtained by the detection method, namely, the resistance and the length of the quality of the wire and cable to be detected which are currently used in a construction site can be obtained, the detection of the quality of the wire and cable to be detected in the construction site is realized by calculating the resistivity of the wire and cable to be detected which are currently used, the problem that the quality of the wire and cable which are installed in the construction site cannot be detected by the traditional detection method is solved, and the safety of an electric power system is further improved.
The above detailed description is directed to an embodiment of a method for detecting quality of a wire and cable, and based on the method for detecting quality of a wire and cable described in the above embodiment, an embodiment of the present invention further provides a device corresponding to the method. Since the embodiment of the apparatus portion and the embodiment of the method portion correspond to each other, the embodiment of the apparatus portion is described with reference to the embodiment of the method portion, and is not described again here.
Fig. 3 is a schematic diagram illustrating a quality detection apparatus for a wire and cable according to an embodiment of the present invention, and as shown in fig. 3, the apparatus includes an obtaining module 301, a calculating module 302, a determining module 303, a first determining module 304, and a second determining module 305
The obtaining module 301 is configured to obtain the resistance of the currently used whole wire and cable to be detected and the length of the wire and cable to be detected;
the calculation module 302 is used for calculating the resistivity of the cable to be detected according to the resistance and the length;
the judging module 303 is used for judging whether the resistivity is in a preset range, and if so, triggering the first determining module; if not, triggering a second determination module;
a first determining module 304, configured to determine that a corresponding wire cable to be detected meets requirements;
and a second determining module 305 for determining that the corresponding wire and cable to be detected is not qualified.
According to the quality detection device for the electric wire and the electric cable, on one hand, the resistance and the length of the whole electric wire and the electric cable to be detected can be obtained, then the quality of the whole electric wire and the electric cable to be detected can be detected according to the resistivity of the whole electric wire and the electric cable to be detected, and compared with the traditional method that only a small part of the electric wire and the electric cable to be detected is obtained for detection, the detection accuracy and the safety of an electric power system are improved. On the other hand, the detection device obtains the resistance and the length of the wire and cable to be detected which are currently used, namely, the resistance and the length of the quality of the wire and cable to be detected which are currently used in a construction site can be obtained, the detection of the quality of the wire and cable to be detected in the construction site is realized by calculating the resistivity of the wire and cable to be detected which are currently used, the problem that the quality of the wire and cable which are installed in the construction site cannot be detected by a traditional detection method is solved, and the safety of an electric power system is further improved.
On the basis of the above-mentioned embodiment, as a preferred implementation, the obtaining module 301 is specifically configured to obtain the length by controlling the pulse signal generator and the pulse signal receiver.
On the basis of the foregoing embodiment, as a preferred implementation manner, the obtaining module 301 is specifically configured to obtain the resistance according to a four-electrode method and an opposite-end short-circuit method.
The above detailed description is directed to an embodiment of a method for detecting quality of a wire and cable, and based on the method for detecting quality of a wire and cable described in the above embodiment, an embodiment of the present invention further provides a device corresponding to the method. Since the embodiment of the device part and the embodiment of the method part correspond to each other, the embodiment of the device part is described with reference to the embodiment of the method part, and is not described again here.
Fig. 4 is a schematic composition diagram of a wire and cable quality detection apparatus according to an embodiment of the present invention, and as shown in fig. 4, the apparatus includes a memory 401 and a processor 402.
A memory 401 for storing a computer program;
a processor 402 for executing a computer program to implement the steps of the wire and cable quality detection method provided by any of the above embodiments.
According to the quality detection equipment for the electric wire and the electric cable, on one hand, the resistance and the length of the whole electric wire and the electric cable to be detected can be obtained, then the quality of the whole electric wire and the electric cable to be detected can be detected according to the resistivity of the whole electric wire and the electric cable to be detected, and compared with the traditional method that only a small part of the electric wire and the electric cable to be detected is obtained for detection, the detection accuracy and the safety of an electric power system are improved. On the other hand, the resistance and the length of the wire and cable to be detected which are used at present are obtained by the detection equipment, namely, the resistance and the length of the quality of the wire and cable to be detected which are used at a construction site can be obtained, the detection of the quality of the wire and cable to be detected at the construction site is realized by calculating the resistivity of the wire and cable to be detected which are used at present, the problem that the quality of the wire and cable which are installed at the construction site cannot be detected by a traditional detection method is solved, and the safety of an electric power system is further improved.
The above embodiment of the method for detecting the quality of the electric wire and the cable is described in detail, and based on the method for detecting the quality of the electric wire and the cable described in the above embodiment, the embodiment of the present invention further provides a computer readable storage medium corresponding to the method. Since the embodiment of the computer-readable storage medium portion and the embodiment of the method portion correspond to each other, please refer to the embodiment of the method portion for describing the embodiment of the computer-readable storage medium portion, which is not described herein again.
A computer-readable storage medium having stored thereon a computer program for execution by a processor to perform the steps of the wire and cable quality detection method provided by any one of the above embodiments.
According to the computer-readable storage medium provided by the invention, the processor can read the program stored in the readable storage medium, so that the quality detection method for the electric wire and the electric cable provided by any one of the embodiments can be realized. On the other hand, the quality resistance and the length of the wire and cable to be detected used in the construction site can be obtained, the quality of the wire and cable to be detected in the construction site can be detected by calculating the resistivity of the wire and cable to be detected currently used, the problem that the quality of the wire and cable installed in the construction site cannot be detected by a traditional detection method is solved, and the safety of a power system is further improved.
The above detailed description is provided for a method, an apparatus, a device and a storage medium for detecting the quality of a wire and a cable provided by the present invention. The principles and embodiments of the present invention have been described herein using several examples, the above description of which is only intended to facilitate the understanding of the method and its core concepts of the present invention; meanwhile, for those skilled in the art, based on the idea of the present invention, there may be variations in the specific embodiments and applications, and in summary, the present disclosure should not be construed as a limitation of the present invention, and those skilled in the art should include modifications, equivalent substitutions, improvements and the like without inventive labor.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the term "comprises/comprising" and the like, such that a unit, device or system comprising a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such unit, device or system.
Claims (6)
1. A wire and cable quality detection method is characterized by comprising the following steps:
acquiring the resistance of the whole wire cable to be detected and the length of the whole wire cable to be detected;
calculating the resistivity of the whole wire cable to be detected according to the resistance and the length;
judging whether the resistivity is in a preset range or not;
if yes, determining that the whole corresponding wire cable to be detected meets the requirements;
if not, determining that the whole corresponding wire and cable to be detected does not meet the requirements;
the resistance of obtaining the whole wire cable to be detected used currently is specifically:
obtaining the resistance according to a four-electrode method and an opposite-end short circuit method;
the length of acquiring the whole wire cable to be detected is as follows:
acquiring the length by controlling a pulse signal generator and a pulse signal receiver;
the process of obtaining the A-phase resistance of the whole wire cable to be detected according to the four-electrode method and the opposite-end short-circuit method comprises the following steps:
independently short-circuiting the AC phase cable and the AB phase cable at the first end of the whole wire cable to be detected;
applying preset direct current I between the AC phase cables at the second end of the whole wire cable to be detected;
taking a B-phase cable at the second end of the whole cable to be detected as a voltage measurement lead end, connecting a voltmeter V between the AB-phase cables, and measuring the voltage U at the two ends of the A-phase cable;
the resistance value of the a-phase cable is determined by ohm's law.
2. The wire and cable quality detection method according to claim 1, wherein the pulse signal generator is specifically a CN61M/MTPG pulse signal generator.
3. The wire and cable quality detection method according to claim 1, wherein the pulse signal receiver is a gmg.
4. A wire and cable quality detection device, comprising:
the acquisition module is used for acquiring the resistance of the whole wire cable to be detected and the length of the whole wire cable to be detected;
the calculation module is used for calculating the resistivity of the whole wire cable to be detected according to the resistance and the length;
the judging module is used for judging whether the resistivity is in a preset range, and if so, the first determining module is triggered; if not, triggering a second determination module;
the first determining module is used for determining that the whole corresponding wire cable to be detected meets the requirements;
the second determining module is used for determining that the whole corresponding wire and cable to be detected does not meet the requirements;
the acquisition module is specifically used for acquiring the length by controlling the pulse signal generator and the pulse signal receiver;
the acquisition module is specifically used for acquiring the resistor according to a four-electrode method and an opposite-end short-circuit method;
the acquisition module is specifically used for independently short-circuiting the AC phase cable and the AB phase cable at the first end of the whole cable to be detected; applying preset direct current I between the AC phase cables at the second end of the whole wire cable to be detected; taking a B-phase cable at the second end of the whole cable to be detected as a voltage measurement lead end, connecting a voltmeter V between the AB-phase cables, and measuring the voltage U at the two ends of the A-phase cable; the resistance value of the a-phase cable is determined by ohm's law.
5. An electric wire and cable quality detecting apparatus, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the wire and cable quality detection method according to any one of claims 1 to 3.
6. A computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the steps of the wire and cable quality detection method according to any one of claims 1 to 3.
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| CN202758035U (en) * | 2012-08-12 | 2013-02-27 | 湖北仪天成电力设备有限公司 | Cable fault tester |
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