CN110794258B - Electric circuit sparking detection method, device, equipment and storage medium - Google Patents
Electric circuit sparking detection method, device, equipment and storage medium Download PDFInfo
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- CN110794258B CN110794258B CN201911031270.8A CN201911031270A CN110794258B CN 110794258 B CN110794258 B CN 110794258B CN 201911031270 A CN201911031270 A CN 201911031270A CN 110794258 B CN110794258 B CN 110794258B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The embodiment of the invention discloses an electric circuit sparking detection method, which comprises the following steps: acquiring a voltage waveform and a current waveform of an electric line to be detected; judging whether the voltage waveform is consistent with the phase of the current waveform; under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform; judging whether the first characteristic meets a preset first condition or not; and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition. The invention realizes effective judgment of the ignition characteristics of the electric circuit, has low calculation complexity of the ignition detection method of the electric circuit, and reduces the requirement on a single chip microcomputer. In addition, a method, a device, equipment and a storage medium for detecting the ignition of the electric circuit are also provided.
Description
Technical Field
The invention relates to the technical field of electric circuit detection, in particular to an electric circuit sparking detection method, device, equipment and storage medium.
Background
At present, due to the aging phenomenon or overload of the electric circuit, the short circuit, poor contact, electric leakage, overload and the like of the electric circuit can occur, so that the ignition phenomenon can occur, and further, accidents such as fire disasters can occur. Therefore, it is important to detect whether or not the electric line is ignited in order to prevent accidents such as fire.
The existing electric line sparking detection scheme is to carry out the sparking detection by carrying out Fourier transform on the waveforms of the collected voltage and current and searching for higher harmonic components. In the scheme, the calculation amount of Fourier transform and higher harmonic component is large, the data processing is complex, and the performance of the single chip microcomputer is higher.
Therefore, in the conventional ignition detection scheme for the electric line, the complexity of the detection method is too high in the ignition detection.
Disclosure of Invention
In view of the above, it is necessary to provide an electrical line sparking detection method, apparatus, computer device and storage medium.
A method of electrical line sparking detection, the method comprising:
acquiring a voltage waveform and a current waveform of an electric line to be detected;
judging whether the phases of the voltage waveform and the current waveform are consistent;
under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
judging whether the first characteristic meets a preset first condition or not;
and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition.
In one embodiment, after the step of determining that the sparking characteristic exists on the electrical line, the method further comprises: acquiring the duration of the ignition characteristic, and judging whether the duration is greater than or equal to preset fault-tolerant time; and judging that the electric circuit has an ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
In one embodiment, the step of obtaining the voltage waveform and the current waveform of the electrical line to be detected further comprises: acquiring a voltage signal and a corresponding current signal of an electric line to be detected; and sampling the voltage signals and the current signals according to the preset sampling number and sampling positions, and generating the voltage waveforms and the current waveforms according to data obtained by sampling.
In one embodiment, the step of determining whether the voltage waveform and the current waveform are in phase further comprises: calculating a phase difference between the voltage waveform and the current waveform; determining that the phases of the voltage waveform and the current waveform are consistent under the condition that the phase difference meets a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
In one embodiment, after the step of determining whether the voltage waveform and the current waveform are consistent in phase, the method further includes: under the condition that the voltage waveform is inconsistent with the phase of the current waveform, acquiring a voltage characteristic value of the voltage waveform, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value; judging whether the voltage characteristic value meets a preset second condition or not; and under the condition that the voltage characteristic value meets a preset second condition, judging that the electric circuit has an ignition characteristic.
In one embodiment, the step of determining whether the voltage characteristic value satisfies a preset second condition further includes: determining a voltage effective value and a voltage maximum value according to the voltage waveform; calculating a voltage peak value according to the voltage effective value; judging whether the maximum voltage value is larger than the peak voltage value; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
An electrical line strike detection device, the device comprising:
the first acquisition module is used for acquiring the voltage waveform and the current waveform of the electric line to be detected;
the phase judging module is used for judging whether the voltage waveform is consistent with the phase of the current waveform;
the second acquisition module is used for respectively acquiring first characteristics of the voltage waveform and the current waveform under the condition that the phases of the voltage waveform and the current waveform are consistent, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
the characteristic judging module is used for judging whether the first characteristic meets a preset first condition or not;
and the ignition characteristic judging module is used for judging that the ignition characteristic exists in the electric circuit under the condition that the first characteristic meets a preset first condition.
In one embodiment, the apparatus further comprises: the time judgment module is used for acquiring the duration time of the ignition characteristic and judging whether the duration time is greater than or equal to preset fault-tolerant time or not; and the ignition phenomenon judging module is used for judging that the electric circuit has the ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
In one embodiment, the first obtaining module further comprises: the first acquisition unit is used for acquiring a voltage signal and a corresponding current signal of an electric line to be detected; and the sampling unit is used for sampling the voltage signals and the current signals according to the preset sampling number and sampling positions and generating the voltage waveforms and the current waveforms according to the data acquired by sampling.
In one embodiment, the phase determining module further comprises: a first calculation unit for calculating a phase difference of the voltage waveform and the current waveform; a phase determination unit configured to determine that phases of the voltage waveform and the current waveform are the same when the phase difference satisfies a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
In one embodiment, the apparatus further comprises: the third acquisition module is used for acquiring a voltage characteristic value of the voltage waveform under the condition that the phases of the voltage waveform and the current waveform are inconsistent, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value; the characteristic value judging module is used for judging whether the voltage characteristic value meets a preset second condition or not; and the judging module is used for judging that the electric circuit has the ignition characteristic under the condition that the voltage characteristic value meets a preset second condition.
In one embodiment, the feature value determination module further includes: the determining unit is used for determining a voltage effective value and a voltage maximum value according to the voltage waveform; the second calculating unit is used for calculating a voltage peak value according to the voltage effective value; the judging unit is used for judging whether the maximum voltage value is larger than the voltage peak value or not; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
A computer device comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of:
acquiring a voltage waveform and a current waveform of an electric line to be detected;
judging whether the voltage waveform is consistent with the phase of the current waveform;
under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
judging whether the first characteristic meets a preset first condition or not;
and judging that the electric circuit has an ignition characteristic under the condition that the first characteristic meets a preset first condition.
A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
acquiring a voltage waveform and a current waveform of an electric line to be detected;
judging whether the voltage waveform is consistent with the phase of the current waveform;
under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
judging whether the first characteristic meets a preset first condition or not;
and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition.
By adopting the electric line sparking detection method, the device, the equipment and the storage medium, firstly, the voltage waveform and the current waveform of the electric line to be detected are obtained through the signal acquisition equipment; then judging whether the phases are consistent or not according to the phase information of the voltage waveform and the current waveform; under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring waveform integrity characteristics of the voltage waveform and the current waveform; finally, judging whether the waveform integrity characteristics of the voltage waveform and the current waveform meet preset conditions; and judging the ignition characteristic, namely judging that the ignition characteristic exists in the electric circuit under the condition that the first characteristic meets the first condition. The method and the device for detecting the electric circuit sparking provided by the invention can be used for judging whether the sparking characteristic exists in the electric circuit or not by comparing the phase difference of the voltage waveform and the current waveform with the characteristics of the waveform integrity, can be used for effectively judging the sparking characteristic of the electric circuit, and compared with the existing scheme, the complexity of the scheme for detecting the sparking of the electric circuit in the method, the device and the equipment for detecting the electric circuit sparking and the storage medium is greatly reduced, the requirement on a single chip microcomputer is reduced, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a flow chart of a method of electrical line sparking detection in one embodiment;
FIG. 2 is a flow chart of a method of electrical line sparking detection in one embodiment;
FIG. 3 is a block diagram of the structure of an electric circuit sparking detection apparatus according to one embodiment;
FIG. 4 is a block diagram showing the structure of an electric circuit sparking detection apparatus according to one embodiment;
FIG. 5 is a block diagram of a first obtaining module in one embodiment;
FIG. 6 is a block diagram of a phase determination module in one embodiment;
FIG. 7 is a block diagram showing the structure of an electric circuit sparking detection apparatus according to one embodiment;
FIG. 8 is a block diagram showing the structure of a feature value determination module according to an embodiment;
fig. 9 is a block diagram of a computer device for executing the method for detecting arcing in an electrical line according to one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are 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.
In one embodiment, the circuit line sparking detection method determines the sparking characteristics of the electrical line by acquiring and analyzing the voltage signal and the current signal. The method is applied to the detection of electrical lines and is implemented on the basis of a device capable of acquiring and analyzing voltage signals and current signals, such as a single chip microcomputer.
In one embodiment, as shown in FIG. 1, a method of electrical line sparking detection is provided. The electric circuit sparking detection method specifically comprises the following steps S102-S110:
and step S102, acquiring the voltage waveform and the current waveform of the electric line to be detected.
Specifically, the electric line to be detected is a lead for connecting and transmitting electric energy between the electric devices. The sparking condition of the electrical line can be detected by the voltage waveform and the current waveform. The voltage waveform refers to a voltage image changing along with time, the current waveform refers to a current image changing along with time, and the voltage waveform and the current waveform correspond to each other in the acquired time. The voltage waveform and the current waveform of the electric line may be sine wave waveforms, square wave waveforms, or triangle wave waveforms, but are not limited to the above waveforms. When the voltage waveform and the current waveform are obtained, the voltage waveform and the current waveform of one cycle can be obtained, and the voltage waveform and the current waveform of a plurality of cycles can also be obtained. The actual voltage signal and current signal can be sampled according to the performance of the equipment, for example, according to the performance of a single chip microcomputer, the actual voltage signal and current signal are subjected to multi-point sampling through an A/D converter, and the voltage waveform and the current waveform are generated by the acquired discrete numerical values.
In one embodiment, a voltage signal and a corresponding current signal of an electrical line to be detected are acquired; and sampling the voltage signals and the current signals according to the preset sampling number and sampling positions, and generating the voltage waveforms and the current waveforms according to data obtained by sampling.
Wherein the voltage signal and the corresponding current signal of the electrical line represent signals of voltage values and current values, respectively, which vary with time. The sampling number can be set according to the performance of equipment, and on the basis of meeting the performance of a terminal, the sampling number is more and more beneficial to the accuracy of voltage waveform and current waveform analysis. The sampling position may be set in time variation, for example, sampling every 0.1 msec. The sampling positions may be distributed within one period of the voltage signal and the current signal, or may be distributed within a plurality of periods of the voltage signal and the current signal. The generated voltage waveform and the current waveform are more adaptive to the performance of the equipment while the characteristics of the voltage signal and the current signal are kept.
Step S104, judging whether the voltage waveform is consistent with the phase of the current waveform; if yes, go to step S106: respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform; if not, go to step S107: and acquiring voltage characteristic values of the voltage waveform, wherein the voltage characteristic values comprise a voltage effective value, a voltage maximum value and a voltage peak value.
Specifically, in one embodiment, determining whether the voltage waveform and the current waveform are in phase with each other is by calculating a phase difference between the voltage waveform and the current waveform; determining that the phases of the voltage waveform and the current waveform are consistent under the condition that the phase difference meets a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
Wherein, illustratively, the phase of the voltage waveform may be used
Indicating that the phase of the current waveform can be
Indicating the phase difference between the voltage and current waveforms
Comprises the following steps:
the first threshold may be a specific value, for example the value may be
May also be a range of values, for example the range may be
Illustratively, when the first threshold is a specific value, the phase difference is measured
Is less than or equal to
When the phase difference is small, the phases of the voltage waveform and the current waveform are judged to be consistent
Is greater than
When the voltage waveform is not identical to the current waveform, the current waveform is determined. When the first threshold is a range of values, when
Belong to
When the voltage waveform and the current waveform are in phase with each other, the phase of the voltage waveform and the phase of the current waveform are determined to be coincident
Do not belong to
The phases of the voltage waveform and the current waveform are determined to be inconsistent. The condition of the phase is judged through the first threshold, so that the condition that the phases of the voltage waveform and the current waveform are determined to be inconsistent due to a tiny phase difference, for example, an error smaller than one fiftieth of the waveform period can be avoided.
Specifically, in step S106, in the case where the phases of the voltage waveform and the current waveform of the electric line coincide, the load in the electric line may be a resistive load, such as a resistor. However, when the voltage waveform and the current waveform are in phase with each other, the electric line may have a sparking characteristic, in addition to the case where the load is a resistive load. Therefore, it is necessary to determine the waveform integrity of the voltage waveform or the current waveform. The integrity of the waveform can be judged by identifying whether the voltage waveform or the current waveform has a gap or not; the determination may be made by calculating the sum of the areas of the positive and negative half cycles of the voltage waveform or the current waveform, for example, the sum of the areas of the voltage of the rectangular wave, and the voltage value of the first T/2 cycle in one cycle T is U1The voltage value of the later T/2 period is U2If the sum of the areas of the positive and negative half cycles is S:
in addition to the case where the voltage waveform and the current waveform match, there is also a case where the phases of the voltage waveform and the current waveform of the electric line do not match. In this case, the load of the electrical line may be a capacitive load or an inductive load. Wherein, the load of which the current lags the voltage by one phase difference is an inductive load, such as a motor, a transformer, etc.; the load where the current leads the voltage by one phase difference is a capacitive load, e.g., a compensation capacitor, etc. However, when the voltage waveform and the current waveform do not match, the electric line may have a sparking characteristic, in addition to the case where the load is a capacitive load or an inductive load. Here, the ignition characteristic of the electric line may be judged by the voltage characteristic value.
In one embodiment, in step S107, in the case where the voltage waveform does not coincide with the phase of the current waveform, a voltage characteristic value of the voltage waveform is acquired, the voltage characteristic value including a voltage effective value, a voltage maximum value, and a voltage peak value; then, step S109 is executed: judging whether the voltage characteristic value meets a preset second condition or not; and under the condition that the voltage characteristic value meets a preset second condition, judging that the electric circuit has an ignition characteristic.
In the voltage of the electric circuit, in a signal period, when the heat generated by a pure resistance load is equal to the heat generated by a grid of direct current voltage on the same load, the effective value of the voltage of the electric circuit is the value of the direct current voltage. The maximum voltage value is the maximum voltage value in the sampling period, and the maximum voltage value is obtained by sampling. The voltage peak value is the voltage value from zero voltage to the highest point, and the voltage peak value is calculated through the effective value of the voltage.
The second condition may be a threshold condition that the voltage effective value, the voltage maximum value, and the voltage peak value need to satisfy, and may be a condition that a relationship between the voltage effective value, the voltage maximum value, and the voltage peak value needs to satisfy. The ignition characteristic is judged by judging whether the voltage characteristic value satisfies the second condition.
In one embodiment, it is proposed that the voltage characteristic value is judged to meet a preset second condition, and a voltage effective value and a voltage maximum value are determined according to the voltage waveform; calculating a voltage peak value according to the voltage effective value; judging whether the maximum voltage value is larger than the peak voltage value; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
For example, if the voltage of the electrical line is an ac voltage, the following formula may be used to represent the following:
where T is the period of the AC signal, and u (T) is the instantaneous value of the voltage.
For example, u (t) may be sampled at equal intervals, and a time discrete signal sequence is obtained and then a voltage effective value of u (t) is obtained by numerical integration. Sampling N points of the signal u (T) at equal intervals of T/N within one signal period T to obtain a discrete signal sequence:
U(n)＝u(n*△t)，(n＝0，1，2，...，N-1)
the calculation formula for obtaining the effective value of the voltage through a trapezoidal formula in numerical integration is as follows:
since U (t) is a periodic signal, U (n) ═ U (0) is substituted into the above formula to obtain a calculation formula of an effective voltage value which is easy to realize by the terminal:
the voltage peak value can be calculated by a relation of the voltage effective value and the voltage peak value, for example, the voltage peak value in the sinusoidal alternating current is the voltage effective value
And (4) doubling. The maximum value of the voltage is the absolute value of the amplitude of the voltage.
When the maximum voltage is greater than the peak voltage, the electric circuit may have electric leakage, poor contact, and the like. Therefore, the ignition characteristics of the electric circuit can be accurately judged according to the voltage effective value, the voltage peak value and the voltage maximum value.
Step S108, judging whether the first characteristic meets a preset first condition; if yes, go to step S110: judging the existence of an ignition characteristic of the electric circuit; if not, step S111 is executed: and judging that the electric circuit has no sparking characteristic.
Specifically, the first characteristic can be determined by calculating the area sum of the positive and negative half cycles of the voltage waveform or the current waveform, and if the area sum is not zero, it is determined that the first characteristic satisfies a first preset condition; the judgment can also be carried out by identifying whether the voltage waveform or the current waveform has a notch or not, and if the voltage waveform or the current waveform has a notch, the first characteristic is judged to meet the preset first condition.
Specifically, the integrity of the waveform, which is the first characteristic, can be determined by identifying whether the voltage waveform and the current waveform have gaps or not. If the voltage waveform or the current waveform has gaps and the like, the integrity of the waveform meets a preset first condition, and an electric line has ignition characteristics; if the voltage waveform or the current waveform has no gap and the like, the integrity of the waveform does not meet the preset first condition, and the electric circuit has no ignition characteristic. The integrity of the waveform can also be determined by calculating whether the sum of the areas of the positive and negative half cycles of the voltage waveform or the current waveform is zero, for example, the sum of the areas of the voltage of the rectangular wave, and the voltage value of the first T/2 period is U in one period T1The voltage value of the later T/2 period is U2If the sum of the areas of the positive and negative half cycles is:
if the area and the S are zero, the integrity of the waveform does not meet a preset first condition, and the electric circuit does not have the ignition characteristic; if the area and the S are not zero, the integrity of the waveform meets a preset first condition, and the electric line has an ignition characteristic.
When the integrity of the first characteristic, that is, the waveform meets a preset first condition, the waveform of the voltage or the waveform of the current at the time is incomplete, and the conditions such as electric leakage or poor contact may occur, which may cause an ignition phenomenon to occur in an electric circuit.
It should be noted that when the electric circuit has the ignition feature, the time of the ignition feature is very short, and the ignition phenomenon is not necessarily caused, and if the ignition feature exists, the ignition early warning is performed on the electric circuit, so that the early warning is inaccurate.
As shown in fig. 2, in one embodiment, after determining that the sparking characteristic exists on the electrical line, obtaining a duration time of the sparking characteristic, and determining whether the duration time is greater than or equal to a preset fault-tolerant time; and judging that the electric circuit has an ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
The fault-tolerant time can obtain specific data according to experiments of the phenomenon of sparking caused by electric line discharge. If the duration of the sparking characteristic of the electrical circuit is short, then the circuit is immediately restored to normal without sparking. Therefore, when the duration time of the ignition characteristic exceeds the preset fault-tolerant time, the electric circuit is judged to have the ignition phenomenon. By judging the duration of the ignition characteristics, frequent ignition early warning can be avoided for the electric circuit.
The fault-tolerant time is a preset time threshold and is used for judging the duration time of the ignition characteristic. In a specific implementation process, the fault-tolerant time can be a specific value obtained according to an experiment of an ignition phenomenon caused by electric line discharge. If the duration of the sparking characteristic of the electrical circuit is short, then it is immediately restored to normal and it is not considered that sparking has occurred. Therefore, the electric circuit is judged to have the ignition phenomenon only when the duration time of the ignition characteristic exceeds the preset fault-tolerant time. That is to say, by judging the duration of the ignition feature, frequent ignition early warning can be avoided for the electric circuit under the condition that the short ignition feature exists in the electric circuit.
In one embodiment, as shown in fig. 3, an electrical line strike detection device is provided, the device comprising:
the first obtaining module 302 is configured to obtain a voltage waveform and a current waveform of an electrical line to be detected;
a phase determining module 304, configured to determine whether the voltage waveform and the current waveform are consistent in phase;
a second obtaining module 306, configured to obtain first characteristics of the voltage waveform and the current waveform, where the phases of the voltage waveform and the current waveform are consistent, where the first characteristics are waveform integrity of the voltage waveform or the current waveform;
a characteristic determining module 308, configured to determine whether the first characteristic meets a preset first condition;
and the sparking characteristic determining module 310 is used for determining that the sparking characteristic exists in the electric circuit under the condition that the first characteristic meets a preset first condition.
As shown in fig. 4, in one embodiment, the apparatus further comprises: a time determining module 312, configured to obtain a duration of the ignition feature, and determine whether the duration is greater than or equal to a preset fault-tolerant time; and the sparking phenomenon judging module 314 is used for judging that the sparking phenomenon exists in the electric circuit under the condition that the duration time is greater than or equal to the preset fault-tolerant time.
As shown in fig. 5, in one embodiment, the first obtaining module 302 further includes: the first acquisition unit is used for acquiring a voltage signal and a corresponding current signal of an electric line to be detected; and the sampling unit is used for sampling the voltage signals and the current signals according to the preset sampling number and sampling positions and generating the voltage waveforms and the current waveforms according to the data acquired by sampling.
As shown in fig. 6, in one embodiment, the phase determining module 304 further includes: a first calculation unit for calculating a phase difference of the voltage waveform and the current waveform; a phase determination unit configured to determine that phases of the voltage waveform and the current waveform are the same when the phase difference satisfies a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
As shown in fig. 7, in one embodiment, the apparatus further comprises: a third obtaining module 307, configured to obtain a voltage characteristic value of the voltage waveform when the voltage waveform is inconsistent with the phase of the current waveform, where the voltage characteristic value includes a voltage effective value, a voltage maximum value, and a voltage peak value; a characteristic value determining module 309, configured to determine whether the voltage characteristic value meets a preset second condition; the determination module 311 is configured to determine that the ignition feature exists in the electrical line when the voltage feature value satisfies a preset second condition.
As shown in fig. 8, in one embodiment, the feature value determining module 309 further includes: the determining unit is used for determining a voltage effective value and a voltage maximum value according to the voltage waveform; the second calculating unit is used for calculating a voltage peak value according to the voltage effective value; the judging unit is used for judging whether the maximum voltage value is larger than the voltage peak value or not; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
FIG. 9 is a diagram illustrating an internal structure of a computer device in one embodiment. The computer device may specifically be a terminal, and may also be a server. As shown in fig. 9, the computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program that, when executed by the processor, causes the processor to implement the electrical line sparking detection method. The internal memory may also have a computer program stored therein that, when executed by the processor, causes the processor to perform a method of electrical circuit sparking detection. Those skilled in the art will appreciate that the architecture shown in fig. 9 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 proposed, comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of: acquiring a voltage waveform and a current waveform of an electric line to be detected; judging whether the voltage waveform is consistent with the phase of the current waveform; under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform; judging whether the first characteristic meets a preset first condition or not; and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition.
In one embodiment, after the step of determining that the sparking characteristic exists on the electrical line, the method further comprises: acquiring the duration of the ignition characteristic, and judging whether the duration is greater than or equal to preset fault-tolerant time; and judging that the electric circuit has an ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
In one embodiment, the step of obtaining the voltage waveform and the current waveform of the electrical line to be detected further comprises: acquiring a voltage signal and a corresponding current signal of an electric line to be detected; and sampling the voltage signals and the current signals according to the preset sampling number and sampling positions, and generating the voltage waveforms and the current waveforms according to data obtained by sampling.
In one embodiment, the step of determining whether the voltage waveform and the current waveform are in phase further comprises: calculating a phase difference between the voltage waveform and the current waveform; determining that the phases of the voltage waveform and the current waveform are consistent under the condition that the phase difference meets a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
In one embodiment, after the step of determining whether the voltage waveform and the current waveform are in phase, the method further includes: under the condition that the voltage waveform is inconsistent with the phase of the current waveform, acquiring a voltage characteristic value of the voltage waveform, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value; judging whether the voltage characteristic value meets a preset second condition or not; and under the condition that the voltage characteristic value meets a preset second condition, judging that the electric circuit has an ignition characteristic.
In one embodiment, the step of determining whether the voltage characteristic value satisfies a preset second condition further includes: determining a voltage effective value and a voltage maximum value according to the voltage waveform; calculating a voltage peak value according to the voltage effective value; judging whether the maximum voltage value is larger than the peak voltage value; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
In one embodiment, a computer-readable storage medium is proposed, in which a computer program is stored which, when executed by a processor, causes the processor to carry out the steps of: acquiring a voltage waveform and a current waveform of an electric line to be detected; judging whether the phases of the voltage waveform and the current waveform are consistent; under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform; judging whether the first characteristic meets a preset first condition or not; and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition.
In one embodiment, after the step of determining that the sparking characteristic exists on the electrical line, the method further comprises: acquiring the duration of the ignition characteristic, and judging whether the duration is greater than or equal to preset fault-tolerant time; and judging that the electric circuit has an ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
In one embodiment, the step of obtaining the voltage waveform and the current waveform of the electrical line to be detected further comprises: acquiring a voltage signal and a corresponding current signal of an electric line to be detected; and sampling the voltage signals and the current signals according to the preset sampling number and sampling positions, and generating the voltage waveforms and the current waveforms according to data obtained by sampling.
In one embodiment, the step of determining whether the voltage waveform and the current waveform are in phase further comprises: calculating a phase difference between the voltage waveform and the current waveform; determining that the phases of the voltage waveform and the current waveform are consistent under the condition that the phase difference meets a preset first threshold; and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
In one embodiment, after the step of determining whether the voltage waveform and the current waveform are consistent in phase, the method further includes: under the condition that the voltage waveform is inconsistent with the phase of the current waveform, acquiring a voltage characteristic value of the voltage waveform, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value; judging whether the voltage characteristic value meets a preset second condition or not; and under the condition that the voltage characteristic value meets a second preset condition, judging that the electric circuit has an ignition characteristic.
In one embodiment, the step of determining whether the voltage characteristic value satisfies a preset second condition further includes: determining a voltage effective value and a voltage maximum value according to the voltage waveform; calculating a voltage peak value according to the voltage effective value; judging whether the maximum voltage value is larger than the peak voltage value; and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
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 can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
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-mentioned embodiments 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 present application. 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, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims. Please enter the implementation details.
Claims (9)
1. A method of detecting sparking on an electrical circuit, the method comprising:
acquiring a voltage waveform and a current waveform of an electric line to be detected;
judging whether the voltage waveform is consistent with the phase of the current waveform;
under the condition that the voltage waveform is inconsistent with the phase of the current waveform, acquiring a voltage characteristic value of the voltage waveform, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value;
judging whether the voltage characteristic value meets a preset second condition, wherein the second condition is that the maximum voltage value is larger than the voltage peak value;
under the condition that the voltage characteristic value meets a preset second condition, judging that an electric circuit has an ignition characteristic;
under the condition that the phases of the voltage waveform and the current waveform are consistent, respectively acquiring first characteristics of the voltage waveform and the current waveform, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
judging whether the first characteristic meets a preset first condition or not;
and judging that the electric circuit has the ignition characteristic under the condition that the first characteristic meets a preset first condition.
2. The method of claim 1, wherein the step of determining that the sparking characteristic exists for the electrical circuit is followed by:
obtaining the duration time of the ignition characteristics, and judging whether the duration time is more than or equal to preset fault-tolerant time or not;
and judging that the electric circuit has an ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
3. The method of claim 1, wherein the step of obtaining voltage and current waveforms of the electrical line to be tested further comprises:
acquiring a voltage signal and a corresponding current signal of an electric line to be detected;
and sampling the voltage signals and the current signals according to the preset sampling number and sampling positions, and generating the voltage waveforms and the current waveforms according to data obtained by sampling.
4. The method of claim 1, wherein the step of determining whether the voltage waveform and the phase of the current waveform are consistent further comprises:
calculating a phase difference between the voltage waveform and the current waveform;
determining that the phases of the voltage waveform and the current waveform are consistent under the condition that the phase difference meets a preset first threshold;
and when the phase difference does not satisfy a preset first threshold value, determining that the phases of the voltage waveform and the current waveform are inconsistent.
5. The method according to claim 1, wherein the step of determining whether the voltage characteristic value satisfies a preset second condition further comprises:
determining a voltage effective value and a voltage maximum value according to the voltage waveform;
calculating a voltage peak value according to the voltage effective value;
judging whether the maximum voltage value is larger than the peak voltage value;
and under the condition that the voltage maximum value is larger than the voltage peak value, judging that the voltage characteristic value of the voltage waveform meets a preset second condition.
6. An electrical line strike detection device, said device comprising:
the first acquisition module is used for acquiring the voltage waveform and the current waveform of the electric line to be detected;
the phase judging module is used for judging whether the voltage waveform is consistent with the phase of the current waveform; under the condition that the voltage waveform is inconsistent with the phase of the current waveform, acquiring a voltage characteristic value of the voltage waveform, wherein the voltage characteristic value comprises a voltage effective value, a voltage maximum value and a voltage peak value; judging whether the voltage characteristic value meets a preset second condition, wherein the second condition is that the maximum voltage value is larger than the voltage peak value; judging that the electric circuit has an ignition characteristic under the condition that the voltage characteristic value meets a preset second condition;
the second acquisition module is used for respectively acquiring first characteristics of the voltage waveform and the current waveform under the condition that the phases of the voltage waveform and the current waveform are consistent, wherein the first characteristics are the waveform integrity of the voltage waveform or the current waveform;
the characteristic judging module is used for judging whether the first characteristic meets a preset first condition or not;
and the ignition characteristic judging module is used for judging that the ignition characteristic exists in the electric circuit under the condition that the first characteristic meets a preset first condition.
7. The apparatus of claim 6, further comprising:
the time judgment module is used for acquiring the duration time of the ignition characteristic and judging whether the duration time is greater than or equal to preset fault-tolerant time or not;
and the ignition phenomenon judging module is used for judging that the electric circuit has the ignition phenomenon under the condition that the duration time is more than or equal to the preset fault-tolerant time.
8. A computer-readable storage medium, storing a computer program which, when executed by a processor, causes the processor to carry out the steps of the method according to any one of claims 1 to 5.
9. A computer device comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the method according to any one of claims 1 to 5.
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