CN113064008A - Medium-voltage fuse quality detection method, device, equipment and medium - Google Patents
Medium-voltage fuse quality detection method, device, equipment and medium Download PDFInfo
- Publication number
- CN113064008A CN113064008A CN202110319557.1A CN202110319557A CN113064008A CN 113064008 A CN113064008 A CN 113064008A CN 202110319557 A CN202110319557 A CN 202110319557A CN 113064008 A CN113064008 A CN 113064008A
- Authority
- CN
- China
- Prior art keywords
- impedance
- medium
- voltage fuse
- detected
- similarity coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 60
- 238000012372 quality testing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 18
- 238000002474 experimental method Methods 0.000 abstract description 12
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
The application discloses a method, a device, equipment and a medium for detecting the quality of a medium-voltage fuse.A medium-voltage fuse to be detected is scanned by an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected, an impedance similarity coefficient and an impedance angle similarity coefficient are calculated according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and a standard medium-voltage fuse, and finally whether the medium-voltage fuse to be detected is qualified or not is judged according to the impedance similarity coefficient and the impedance angle similarity coefficient. The method solves the technical problems that in the prior art, a rated current temperature rise experiment method is adopted for fuse quality detection, a plurality of professional devices are needed, the test process is complex, time consumption is long, and the method is easily influenced by experiment conditions, so that the test results of different testers are large in dispersity, and the test result error is large.
Description
Technical Field
The application relates to the technical field of quality detection, in particular to a method, a device, equipment and a medium for detecting the quality of a medium-voltage fuse.
Background
Medium voltage fuses play an important role in medium voltage power distribution systems as protection devices in medium voltage power distribution systems. Therefore, quality testing of the medium voltage fuse is required. The prior art adopts a rated current temperature rise experiment method, which needs a lot of professional equipment, has complex test process and long time consumption, and is easily influenced by experiment conditions (such as laboratory temperature, humidity, stability of through-flow, contact area of bases at two ends of a fuse, contact pressure and the like), so that the test results of different testers have large dispersity and large error of the test results.
Disclosure of Invention
The application provides a method, a device, equipment and a medium for detecting the quality of a medium-voltage fuse, which are used for solving the technical problems that in the prior art, a rated current temperature rise experiment method is adopted for detecting the quality of the fuse, a plurality of professional devices are needed, the test process is complex, the time consumption is long, the influence of experiment conditions is easily caused, the test results of different testers are large in dispersity, and the error of the test results is large.
In view of the above, a first aspect of the present application provides a method for detecting quality of a medium voltage fuse, including:
scanning a medium-voltage fuse to be detected through an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected;
calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and the impedance-frequency curve and the impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected;
and judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
Optionally, the method further includes:
acquiring a first impedance maximum value, a first frequency corresponding to the first impedance maximum value, a turning frequency of the impedance from capacitive turning and an impedance minimum value corresponding to the turning frequency according to the impedance-frequency curve of the medium-voltage fuse to be detected;
and determining the internal condition of the medium-voltage fuse to be detected according to the first impedance maximum, the first frequency, the turning frequency and the impedance minimum of the medium-voltage fuse to be detected.
Optionally, the determining whether the medium voltage fuse to be detected is qualified according to the impedance similarity coefficient and the impedance angle similarity coefficient includes:
if the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified;
and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to the preset threshold, determining that the medium voltage fuse to be detected is unqualified.
Optionally, the scanning frequency range of the impedance analyzer for scanning the medium voltage fuse to be detected is 50Hz to 120 MHz.
This application second aspect provides a middling pressure fuse quality detection device, includes:
the scanning unit is used for scanning the medium-voltage fuse to be detected through an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected;
the calculation unit is used for calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected;
and the judging unit is used for judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
Optionally, the method further includes: an acquisition unit for
Acquiring a first impedance maximum value, a first frequency corresponding to the first impedance maximum value, a turning frequency of the impedance from capacitive turning and an impedance minimum value corresponding to the turning frequency according to the impedance-frequency curve of the medium-voltage fuse to be detected;
and determining the internal condition of the medium-voltage fuse to be detected according to the first impedance maximum, the first frequency, the turning frequency and the impedance minimum of the medium-voltage fuse to be detected.
Optionally, the determining unit is specifically configured to:
if the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified;
and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to the preset threshold, determining that the medium voltage fuse to be detected is unqualified.
Optionally, the scanning frequency range of the impedance analyzer for scanning the medium voltage fuse to be detected is 50Hz to 120 MHz.
A third aspect of the present application provides a medium voltage fuse quality detection device, the device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the medium voltage fuse quality detection method of any of the first aspects according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing the medium voltage fuse quality detection method of any one of the first aspects.
According to the technical scheme, the method has the following advantages:
the application provides a quality detection method for a medium-voltage fuse, which comprises the following steps: scanning the medium-voltage fuse to be detected through an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected; calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected; and judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
In the method, an impedance analyzer scans a medium-voltage fuse to be detected to obtain an impedance-frequency curve and an impedance angle-frequency curve, then an impedance similarity coefficient and an impedance angle similarity coefficient are calculated according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and a standard medium-voltage fuse, and finally whether the medium-voltage fuse to be detected is qualified or not is judged according to the impedance similarity coefficient and the impedance angle similarity coefficient to obtain a quality detection result of the medium-voltage fuse to be detected, the detection process adopts simple equipment, the detection time is short, the detection result is not easily influenced by experimental conditions, the accuracy is high, the problem that the fuse quality detection is carried out by adopting a rated current temperature rise experimental method in the prior art is solved, the method needs a plurality of professional equipment, the test process is complex, the consumed time is long, and the method is easily influenced by the experimental, the technical problems of large test result dispersion and large test result error of different testers are caused.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a method for detecting quality of a medium voltage fuse according to an embodiment of the present disclosure;
FIG. 2 is an equivalent circuit diagram of a medium voltage fuse provided in an embodiment of the present application at high frequency;
FIG. 3 is a diagram of a medium voltage fuse and an impedance scanner according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an impedance-frequency curve and an impedance angle-frequency curve of a medium voltage fuse provided by an embodiment of the present application;
FIG. 5 is another schematic flow chart of a method for detecting the quality of a medium voltage fuse according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a quality detection apparatus for a medium voltage fuse according to an embodiment of the present application.
Detailed Description
The application provides a method, a device, equipment and a medium for detecting the quality of a medium-voltage fuse, which are used for solving the technical problems that in the prior art, a rated current temperature rise experiment method is adopted for detecting the quality of the fuse, a plurality of professional devices are needed, the test process is complex, the time consumption is long, the influence of experiment conditions is easily caused, the test results of different testers are large in dispersity, and the error of the test results is large.
In order to make the technical solutions of the present application better understood, 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 application, 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 application.
For ease of understanding, referring to fig. 1, an embodiment of a method for detecting quality of a medium voltage fuse provided by the present application includes:
An equivalent circuit of the medium-voltage fuse under high frequency is shown in fig. 2, in the embodiment of the application, an impedance analyzer is adopted to scan the medium-voltage fuse to be detected, the scanning frequency range is 50Hz-120MHz, and an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected are obtained, as shown in fig. 4, the upper part of the graph in fig. 4 is the impedance-frequency curve, and the lower part of the graph is the impedance angle-frequency curve. The impedance analyzer is shown in fig. 3 after scanning and connecting the medium voltage fuse to be detected. In order to ensure the accuracy of the detection result, when the quality of the medium-voltage fuse of the same model is detected each time, the same special pure copper wire is adopted for the wiring at the two ends of the medium-voltage fuse, and the wiring at the two ends is as short as possible.
And 102, calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of the standard medium-voltage fuse.
And calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of the standard medium-voltage fuse to obtain the impedance similarity coefficient and the impedance angle similarity coefficient, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same model as the medium-voltage fuse to be detected, the impedance-frequency curve and the impedance angle-frequency curve of the standard medium-voltage fuse are obtained by scanning the standard medium-voltage fuse through an impedance analyzer when the standard medium-voltage fuse enters a room, and the scanning frequency range is also 50Hz-120 MHz.
Impedance similarity coefficient S1The calculation process of (2) is as follows:
in the formula, ZkIs to be treatedDetecting discrete impedance values, Z, scanned by the medium-voltage fuse0kThe discrete impedance value is obtained by scanning when a standard medium-voltage fuse enters a room, and N is the number of points of frequency scanning.
Impedance angle similarity coefficient S2The calculation process of (2) is as follows:
in the formula, thetakDiscrete impedance values, theta, obtained for k-scanning of the medium-voltage fuse to be tested0kThe discrete impedance value is obtained by scanning when a qualified standard medium-voltage fuse of the same type as the medium-voltage fuse k to be detected enters a room.
And 103, judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
If the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified; and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to a preset threshold value, judging that the medium voltage fuse to be detected is unqualified. The preset threshold value in the embodiment of the present application is preferably 0.95, i.e., when S is1>0.95 and S2>And 0.95, judging that the state of the medium-voltage fuse to be detected is normal and the quality is qualified, and continuing to use the medium-voltage fuse, and otherwise, judging that the quality of the medium-voltage fuse to be detected has a problem and is unqualified.
In the embodiment of the application, an impedance analyzer scans the medium-voltage fuse to be detected to obtain an impedance-frequency curve and an impedance angle-frequency curve, then an impedance similarity coefficient and an impedance angle similarity coefficient are calculated according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and a standard medium-voltage fuse, and finally whether the medium-voltage fuse to be detected is qualified is judged according to the impedance similarity coefficient and the impedance angle similarity coefficient to obtain a quality detection result of the medium-voltage fuse to be detected, the detection process adopts simple equipment, the detection time is short, the detection result is not easily influenced by experimental conditions, the accuracy is high, the problem that the fuse quality detection is performed by adopting a rated current temperature rise experimental method in the prior art is solved, the method needs a plurality of professional equipment, the test process is complex, the consumed time is long, and the method is easily influenced by the experimental, the technical problems of large test result dispersion and large test result error of different testers are caused.
The above is an embodiment of a method for detecting quality of a medium voltage fuse provided by the present application, and the following is another embodiment of a method for detecting quality of a medium voltage fuse provided by the present application.
Referring to fig. 5, a method for detecting quality of a medium voltage fuse according to an embodiment of the present application includes:
Many fuses have been used for some time in power distribution systems. During this period, although some overcurrent process occurs, the blowing phenomenon does not occur. In addition, when the fuse is blown out due to overcurrent, only one phase of the fuse is blown out, other phases of the fuse are not blown out, and the interior of the fuse does not necessarily experience a serious overcurrent process. When the fuse is fused, a power maintenance worker usually adopts a strategy of completely replacing the three-phase fuse, so that great waste is caused. Whether these fuses that do not have the fuse phenomenon can be used continuously is a concern of the power system. The existing method can not solve the problem. In the existing method, an LCR digital bridge is generally adopted to carry out fuse resistance test, so that the size of a fuse body resistance can be obtained, but the existing method contains less useful information and cannot judge the change of the internal structure of the fuse body; and the medium-voltage fuse can be imaged by adopting an X-ray scanning device to scan the medium-voltage fuse so as to obtain the internal structural details of the fuse, but the device is expensive, has radioactivity and has certain danger.
In order to solve the above problem, in the embodiments of the present application, the medium voltage to be detected is acquiredThe impedance-frequency curve of the fuse can be followed to further determine its internal conditions. Obtaining a first impedance maximum value Z according to an impedance-frequency curve of the medium-voltage fuse to be detected1A first frequency f corresponding to the first impedance maximum1Impedance is transferred from the turning frequency f of the capacitive transduction2And an impedance minimum value Z corresponding to the turning frequency2(ii) a According to the first impedance maximum Z of the medium-voltage fuse to be detected1A first frequency f1Turning frequency f2And impedance minimum Z2To determine the internal condition of the medium voltage fuse to be tested, reference is made to fig. 4.
When the first impedance maximum Z of the medium-voltage fuse to be tested is1If the first impedance maximum value Z of the medium-voltage fuse to be detected is compared with the first impedance maximum value of the standard medium-voltage fuse when the medium-voltage fuse is put in storage1When the fuse wire is obviously increased, judging that the fuse wires in a plurality of melts of the medium-voltage fuse to be detected are broken or abnormal; first frequency f1It is the L, C resonant frequency of the medium voltage fuse itself, which reflects the subtle change of the medium voltage fuse itself L, C, and C generally does not change much, and thus is mainly the change of the equivalent inductance L of the medium voltage fuse itself. Transition frequency f2The resonance frequency of the equivalent capacitance of the medium-voltage fuse and the inductance of the external lead mainly reflects the change of the capacitance C of the medium-voltage fuse. If Z of the medium voltage fuse to be tested1、f1、f2And Z2If the absolute value of one of the parameter change ratios is greater than 10%, the internal state of the fuse is judged to be abnormal so as to detect the first impedance maximum value Z of the medium-voltage fuse1For example, the parameter change ratio kZComprises the following steps:
in the formula, ZO1The first impedance maximum of a standard medium voltage fuse. Method for calculating change ratio of other parameters and kZSimilarly, no further description is provided herein.
And 203, calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and the impedance-frequency curve and the impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected.
And 204, judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
In the embodiment of the application, an impedance analyzer scans the medium-voltage fuse to be detected to obtain an impedance-frequency curve and an impedance angle-frequency curve, then an impedance similarity coefficient and an impedance angle similarity coefficient are calculated according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and a standard medium-voltage fuse, and finally whether the medium-voltage fuse to be detected is qualified is judged according to the impedance similarity coefficient and the impedance angle similarity coefficient to obtain a quality detection result of the medium-voltage fuse to be detected, the detection process adopts simple equipment, the detection time is short, the detection result is not easily influenced by experimental conditions, the accuracy is high, the problem that the fuse quality detection is performed by adopting a rated current temperature rise experimental method in the prior art is solved, the method needs a plurality of professional equipment, the test process is complex, the consumed time is long, and the method is easily influenced by the experimental, the technical problems of large test result dispersion and large test result error of different testers are caused.
Furthermore, the internal condition of the medium-voltage fuse to be detected is determined according to the impedance-frequency curve of the medium-voltage fuse to be detected, so that power maintenance workers can be helped to maintain the medium-voltage fuse, waste caused by violent replacement is avoided, the problem that the equipment is expensive and has radioactivity due to adoption of X-ray scanning equipment can be avoided, the cost is low, and the safety is high.
The above is another embodiment of the method for detecting the quality of the medium voltage fuse provided by the present application, and the following is an embodiment of the apparatus for detecting the quality of the medium voltage fuse provided by the present application.
Referring to fig. 6, an apparatus for detecting quality of a medium voltage fuse according to an embodiment of the present application includes:
the scanning unit is used for scanning the medium-voltage fuse to be detected through the impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected;
the calculating unit is used for calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected;
and the judging unit is used for judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
As a further improvement, the method further comprises the following steps: an acquisition unit for
Acquiring a first impedance maximum value, a first frequency corresponding to the first impedance maximum value, a turning frequency of impedance inductive capacity and an impedance minimum value corresponding to the turning frequency according to an impedance-frequency curve of the medium-voltage fuse to be detected;
and determining the internal condition of the medium-voltage fuse to be detected according to the first impedance maximum, the first frequency, the turning frequency and the impedance minimum of the medium-voltage fuse to be detected.
As a further improvement, the determining unit is specifically configured to:
if the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified;
and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to a preset threshold value, judging that the medium voltage fuse to be detected is unqualified.
As a further improvement, the impedance analyzer scans the medium voltage fuse to be detected at a scanning frequency in the range of 50Hz to 120 MHz.
In the embodiment of the application, an impedance analyzer scans the medium-voltage fuse to be detected to obtain an impedance-frequency curve and an impedance angle-frequency curve, then an impedance similarity coefficient and an impedance angle similarity coefficient are calculated according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and a standard medium-voltage fuse, and finally whether the medium-voltage fuse to be detected is qualified is judged according to the impedance similarity coefficient and the impedance angle similarity coefficient to obtain a quality detection result of the medium-voltage fuse to be detected, the detection process adopts simple equipment, the detection time is short, the detection result is not easily influenced by experimental conditions, the accuracy is high, the problem that the fuse quality detection is performed by adopting a rated current temperature rise experimental method in the prior art is solved, the method needs a plurality of professional equipment, the test process is complex, the consumed time is long, and the method is easily influenced by the experimental, the technical problems of large test result dispersion and large test result error of different testers are caused.
Furthermore, the internal condition of the medium-voltage fuse to be detected is determined according to the impedance-frequency curve of the medium-voltage fuse to be detected, so that power maintenance workers can be helped to maintain the medium-voltage fuse, waste caused by violent replacement is avoided, the problem that the equipment is expensive and has radioactivity due to adoption of X-ray scanning equipment can be avoided, the cost is low, and the safety is high.
The embodiment of the application also provides quality detection equipment of the medium-voltage fuse, which comprises a processor and a memory;
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute the medium voltage fuse quality detection method in the foregoing method embodiments according to instructions in the program code.
The embodiment of the application also provides a computer-readable storage medium, which is used for storing program codes, and the program codes are used for executing the quality detection method of the medium-voltage fuse in the method embodiment.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A quality detection method for a medium voltage fuse is characterized by comprising the following steps:
scanning a medium-voltage fuse to be detected through an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected;
calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to the impedance-frequency curve and the impedance angle-frequency curve of the medium-voltage fuse to be detected and the impedance-frequency curve and the impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected;
and judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
2. The medium voltage fuse quality detection method of claim 1, further comprising:
acquiring a first impedance maximum value, a first frequency corresponding to the first impedance maximum value, a turning frequency of the impedance from capacitive turning and an impedance minimum value corresponding to the turning frequency according to the impedance-frequency curve of the medium-voltage fuse to be detected;
and determining the internal condition of the medium-voltage fuse to be detected according to the first impedance maximum, the first frequency, the turning frequency and the impedance minimum of the medium-voltage fuse to be detected.
3. The method for detecting the quality of the medium-voltage fuse according to claim 1, wherein the step of judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient comprises the following steps:
if the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified;
and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to the preset threshold, determining that the medium voltage fuse to be detected is unqualified.
4. The method for quality testing of medium voltage fuses of claim 1, wherein the scanning frequency range of the impedance analyzer for scanning the medium voltage fuses to be tested is 50Hz to 120 MHz.
5. A medium voltage fuse quality detection device, comprising:
the scanning unit is used for scanning the medium-voltage fuse to be detected through an impedance analyzer to obtain an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected;
the calculation unit is used for calculating an impedance similarity coefficient and an impedance angle similarity coefficient according to an impedance-frequency curve and an impedance angle-frequency curve of the medium-voltage fuse to be detected and an impedance-frequency curve and an impedance angle-frequency curve of a standard medium-voltage fuse, wherein the standard medium-voltage fuse is a qualified medium-voltage fuse of the same type as the medium-voltage fuse to be detected;
and the judging unit is used for judging whether the medium-voltage fuse to be detected is qualified or not according to the impedance similarity coefficient and the impedance angle similarity coefficient.
6. The medium voltage fuse quality detection apparatus of claim 5, further comprising: an acquisition unit for
Acquiring a first impedance maximum value, a first frequency corresponding to the first impedance maximum value, a turning frequency of the impedance from capacitive turning and an impedance minimum value corresponding to the turning frequency according to the impedance-frequency curve of the medium-voltage fuse to be detected;
and determining the internal condition of the medium-voltage fuse to be detected according to the first impedance maximum, the first frequency, the turning frequency and the impedance minimum of the medium-voltage fuse to be detected.
7. The apparatus of claim 5, wherein the determining unit is specifically configured to:
if the impedance similarity coefficient and the impedance angle similarity coefficient are both larger than a preset threshold value, judging that the medium-voltage fuse to be detected is qualified;
and if the impedance similarity coefficient or the impedance angle similarity coefficient is smaller than or equal to the preset threshold, determining that the medium voltage fuse to be detected is unqualified.
8. The medium voltage fuse quality detection apparatus of claim 5, wherein the impedance analyzer scans the medium voltage fuse to be detected at a scanning frequency in the range of 50Hz-120 MHz.
9. A medium voltage fuse quality detection device, the device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the medium voltage fuse quality detection method of any one of claims 1-4 in accordance with instructions in the program code.
10. A computer-readable storage medium for storing program code for performing the medium voltage fuse quality detection method of any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319557.1A CN113064008B (en) | 2021-03-25 | 2021-03-25 | Medium voltage fuse quality detection method, medium voltage fuse quality detection device, medium voltage fuse quality detection equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319557.1A CN113064008B (en) | 2021-03-25 | 2021-03-25 | Medium voltage fuse quality detection method, medium voltage fuse quality detection device, medium voltage fuse quality detection equipment and medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113064008A true CN113064008A (en) | 2021-07-02 |
| CN113064008B CN113064008B (en) | 2024-03-26 |
Family
ID=76561925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110319557.1A Active CN113064008B (en) | 2021-03-25 | 2021-03-25 | Medium voltage fuse quality detection method, medium voltage fuse quality detection device, medium voltage fuse quality detection equipment and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113064008B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021549A (en) * | 1998-07-07 | 2000-01-21 | Nec Corp | Deterioration detection method and deterioration detection circuit of protector |
| CN103163396A (en) * | 2011-12-14 | 2013-06-19 | 中国广东核电集团有限公司 | Small fuse detecting method for nuclear plant |
| WO2013115038A1 (en) * | 2012-01-31 | 2013-08-08 | プライムアースＥｖエナジー株式会社 | Battery state detection device |
| CN105842262A (en) * | 2016-04-13 | 2016-08-10 | 云南电网有限责任公司电力科学研究院 | Quality inspection method of high-voltage current-limiting fuse based on X-ray |
| CN106124996A (en) * | 2016-07-25 | 2016-11-16 | 北京新能源汽车股份有限公司 | A kind of consistency checking method and device of lithium-ion battery monomer |
| CN106338237A (en) * | 2015-07-10 | 2017-01-18 | 华北电力大学（保定） | Transformer winding deformation detection method based on frequency response impedance method |
| CN108732210A (en) * | 2018-05-28 | 2018-11-02 | 西安交通大学 | A kind of piezoelectric device fault of construction detection method based on impedance spectrum |
| CN111880009A (en) * | 2020-07-10 | 2020-11-03 | 广东电网有限责任公司广州供电局 | Accurate measurement circuit and measurement method for melt resistance of medium-voltage fuse |
-
2021
- 2021-03-25 CN CN202110319557.1A patent/CN113064008B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021549A (en) * | 1998-07-07 | 2000-01-21 | Nec Corp | Deterioration detection method and deterioration detection circuit of protector |
| CN103163396A (en) * | 2011-12-14 | 2013-06-19 | 中国广东核电集团有限公司 | Small fuse detecting method for nuclear plant |
| WO2013115038A1 (en) * | 2012-01-31 | 2013-08-08 | プライムアースＥｖエナジー株式会社 | Battery state detection device |
| CN106338237A (en) * | 2015-07-10 | 2017-01-18 | 华北电力大学（保定） | Transformer winding deformation detection method based on frequency response impedance method |
| CN105842262A (en) * | 2016-04-13 | 2016-08-10 | 云南电网有限责任公司电力科学研究院 | Quality inspection method of high-voltage current-limiting fuse based on X-ray |
| CN106124996A (en) * | 2016-07-25 | 2016-11-16 | 北京新能源汽车股份有限公司 | A kind of consistency checking method and device of lithium-ion battery monomer |
| CN108732210A (en) * | 2018-05-28 | 2018-11-02 | 西安交通大学 | A kind of piezoelectric device fault of construction detection method based on impedance spectrum |
| CN111880009A (en) * | 2020-07-10 | 2020-11-03 | 广东电网有限责任公司广州供电局 | Accurate measurement circuit and measurement method for melt resistance of medium-voltage fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113064008B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110361686B (en) | Multi-parameter-based fault detection method for capacitive voltage transformer | |
| CN111257684B (en) | Arc fault detection method and system | |
| CN107024506B (en) | Pyrogenicity defect detection method and system | |
| Lachman et al. | On-line diagnostics of high-voltage bushings and current transformers using the sum current method | |
| CN108267660B (en) | Transformer fault diagnosis method and device | |
| CN109581270A (en) | Method based on multi-scale wavelet transform Fast Identification CVT failure | |
| CN107884645A (en) | Based on voltage ratio compared with power capacitor method for monitoring operation states | |
| KR102260550B1 (en) | Facility health monitoring method by measuring the electric circuit constant inside the power facility in operation | |
| CN113064008A (en) | Medium-voltage fuse quality detection method, device, equipment and medium | |
| CN116400286A (en) | Electronic voltage sensor | |
| CN111044961B (en) | Test machine self-checking system and test method | |
| CN111509740A (en) | Method and device for calculating mean value of intelligent pit filling | |
| JP2009014528A (en) | Short circuit determination device, and short circuit determination method | |
| KR102419753B1 (en) | Facility health monitoring method by measuring the electric circuit constant inside the power facility in operation | |
| CN115600879A (en) | Circuit breaker abnormity early warning method, system and related device | |
| CN115267640A (en) | Current transformer abnormity checking method, system, equipment and medium | |
| CN111273167B (en) | Little inductive current of isolator test circuit that opens and shuts | |
| CN115166425B (en) | System and method for monitoring turn-to-turn insulation defect of dry type air-core reactor | |
| CN114740313B (en) | System and method for detecting turn-to-turn insulation defect of dry type air-core reactor | |
| CN113740779B (en) | Distribution transformer state discrimination method, system, device and storage medium | |
| CN217718079U (en) | Mutual inductor state monitoring circuit | |
| CN111521876B (en) | Capacitive equipment on-line monitoring method and device | |
| KR102654141B1 (en) | Transformer characteristics testing apparatus and method | |
| Porkar et al. | A disk-to-disk breakdown and arc modeling method for fault diagnosis of power transformers during impulse testing | |
| CN115800777A (en) | Direct current output system with intelligent insulation monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |