CN116256054A - Fault monitoring method, system, equipment and medium for bridge arm reactor - Google Patents
Fault monitoring method, system, equipment and medium for bridge arm reactor Download PDFInfo
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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Abstract
The invention discloses a fault monitoring method, a system, equipment and a medium of bridge arm reactors, which are used for responding to a received fault monitoring request, determining a bridge arm reactor to be judged, acquiring a plurality of measuring point vibration speed signals of each encapsulation at the current moment, performing sequence conversion on all measuring point vibration speed signals to generate a plurality of target measuring point sequences, extracting potential defect measuring points from each target measuring point sequence, determining a plurality of target peak detection amplitudes based on preset peak detection amplitude conditions, acquiring associated measuring point vibration speed amplitudes, comparing the measuring point vibration speed amplitudes with the target peak detection amplitudes, taking the associated potential defect measuring points as target fault measuring points if the measuring point vibration speed amplitudes are larger than the target peak detection amplitudes, and judging that the positions of the target fault measuring points are faulty; the method solves the technical problem that the existing monitoring method can not timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the bridge arm reactor structure.
Description
Technical Field
The invention relates to the technical field of prefabricated cabin substations, in particular to a fault monitoring method, system, equipment and medium of bridge arm reactors.
Background
Bridge arm reactors are increasingly widely applied in power systems due to the characteristics of stable inductance value, small loss, convenient maintenance and the like. The bridge arm reactor often operates outdoors, has a severe operating environment and is easy to generate turn-to-turn short circuit faults under the action of various stresses.
The diagnosis method of the turn-to-turn short circuit fault of the bridge arm reactor mainly comprises a high-frequency pulse oscillation method, a temperature monitoring method, a magnetic field monitoring method and the like. The high-frequency pulse oscillation method utilizes the characteristic that the inductance of the reactor changes under the turn-to-turn short circuit fault, sequentially applies high-frequency oscillation voltage with lower and higher amplitude to the reactor, and records the voltage waveform, and judges whether the turn-to-turn short circuit occurs to the reactor or not by comparing the oscillation periods of the two waveforms; the temperature monitoring method mainly comprises two types of infrared temperature measurement and optical fiber temperature measurement, and realizes the monitoring of the running state of the reactor by acquiring the encapsulation temperatures of the reactor on line, so that the method has certain feasibility, but the temperature rise of the reactor has hysteresis and poor sensitivity; the magnetic field monitoring method mainly monitors the space magnetic field of the reactor through the magnetic induction coil, and reacts to the change of the leakage magnetic flux of the reactor caused by turn-to-turn short circuit so as to achieve the purpose of fault detection, but the fault position is difficult to locate, and the space magnetic field has more influence factors and is difficult to realize. Therefore, the current fault monitoring method of the bridge arm reactor cannot timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the structure of the bridge arm reactor.
Disclosure of Invention
The invention provides a fault monitoring method, system, equipment and medium for a bridge arm reactor, which solve the technical problem that the fault occurrence position of the bridge arm reactor cannot be timely and accurately monitored on the basis of not damaging the structure of the bridge arm reactor in the conventional fault monitoring method for the bridge arm reactor.
The fault monitoring method for the bridge arm reactor provided by the first aspect of the invention comprises the following steps:
responding to a received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and acquiring vibration speed signals of a plurality of measuring points of each package at the current moment;
performing sequence conversion on all the measuring point vibration speed signals to generate a plurality of target measuring point sequences;
extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points;
based on a preset peak detection amplitude condition, determining a plurality of target peak detection amplitudes by adopting a vibration speed amplitude sequence associated with each potential defect measuring point;
acquiring the vibration speed amplitude of the measuring point associated with the potential defect measuring point, and comparing the vibration speed amplitude of the measuring point with the associated target peak detection amplitude;
And if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude, taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point, and judging that the position of the target fault measuring point is faulty.
Optionally, the step of determining a bridge arm reactor to be judged corresponding to the fault monitoring request and obtaining vibration speed signals of a plurality of measuring points at the current moment of each package in response to the received fault monitoring request includes:
responding to a received fault monitoring request, and selecting a bridge arm reactor corresponding to the fault monitoring request as a bridge arm reactor to be judged;
and acquiring vibration speed signals of a plurality of measuring points of each encapsulation current moment of the bridge arm reactor to be judged through the optical fiber array acquisition device.
Optionally, the step of performing sequence conversion on all the measurement point vibration speed signals to generate a plurality of target measurement point sequences includes:
performing fast Fourier transform on all the measuring point vibration speed signals, and selecting a plurality of vibration speed amplitudes under a preset frequency component as measuring point vibration speed amplitudes;
Sequencing vibration speed amplitudes of a plurality of measuring points in each package according to a preset measuring point sequence to generate vibration speed amplitude sequences corresponding to the packages;
and carrying out distribution operation on each vibration speed amplitude sequence based on a preset vibration distribution strategy to generate a plurality of target measuring point sequences.
Optionally, the step of determining a plurality of target peak detection amplitudes by using the vibration velocity amplitude sequences associated with each potential defect measurement point based on a preset peak detection amplitude condition includes:
selecting a maximum value and a minimum value from the vibration speed amplitude sequences associated with the potential defect measuring points respectively, and generating a plurality of groups of edge amplitude data, wherein the edge amplitude data comprises an amplitude maximum value and an amplitude minimum value;
performing difference operation by adopting the maximum amplitude value and the minimum amplitude value to generate a plurality of corresponding first difference values;
performing multiplication operation on each first difference value and a preset monitoring threshold value to generate a plurality of corresponding first multiplication values;
and performing sum operation by adopting the first multiplication value and the corresponding amplitude minimum value respectively to generate a plurality of corresponding target peak detection amplitudes.
Optionally, the method further comprises:
the step of responding to the received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and obtaining vibration speed signals of a plurality of measuring points at the current moment of each package is carried out in a jumping mode according to a preset time interval, and determining a plurality of target fault measuring points corresponding to the next moment;
and determining the fault degradation degree of the position of the target fault measuring point corresponding to the next moment by adopting the vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point.
Optionally, the step of determining the fault degradation degree of the location of the target fault measurement point corresponding to the next time by using the vibration speed amplitudes of the measurement points corresponding to two adjacent time points of the same target fault measurement point includes:
inputting a preset fault degree measuring function by adopting vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point, and generating a corresponding target fault degree measuring factor;
comparing the target fault degree measurement factor with a preset standard degree factor;
if the target fault degree measuring factor is larger than the preset standard degree factor, judging that the fault at the position of the target fault measuring point corresponding to the next moment is degraded;
And if the target fault degree measuring factor is smaller than or equal to the preset standard degree factor, judging that the fault at the position of the target fault measuring point corresponding to the next moment is not degraded.
Optionally, the fault degree measurement function is specifically:
wherein ,
indicating a target fault degree measuring factor corresponding to the i-th target fault measuring point at the next moment,/->
Representing the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the current moment,/of the target fault measuring point>
And the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the next moment is represented.
The fault monitoring system of the bridge arm reactor provided in the second aspect of the invention comprises:
the response module is used for responding to the received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request and obtaining vibration speed signals of a plurality of measuring points of each package at the current moment;
the sequence conversion module is used for carrying out sequence conversion on all the measuring point vibration speed signals to generate a plurality of target measuring point sequences;
the potential defect measuring point module is used for extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points;
The target peak detection amplitude module is used for determining a plurality of target peak detection amplitudes by adopting vibration speed amplitude sequences associated with each potential defect measuring point based on preset peak detection amplitude conditions;
the amplitude comparison module is used for acquiring the vibration speed amplitude of the measuring point associated with the potential defect measuring point and comparing the vibration speed amplitude of the measuring point with the associated target peak detection amplitude;
and the fault judging module is used for taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point and judging that the position of the target fault measuring point is faulty if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude.
An electronic device according to a third aspect of the present invention includes a memory and a processor, where the memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to execute the steps of the fault monitoring method for a bridge arm reactor according to any one of the above.
A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the fault monitoring method for a bridge arm reactor according to any one of the above.
From the above technical scheme, the invention has the following advantages:
in the invention, a bridge arm reactor to be judged corresponding to a fault monitoring request is determined in response to the received fault monitoring request, a plurality of measuring point vibration speed signals of each encapsulation current moment are obtained, all measuring point vibration speed signals are subjected to sequence conversion, a plurality of target measuring point sequences are generated, a plurality of measuring points to be judged meeting preset peak conditions are extracted from each target measuring point sequence to serve as potential defect measuring points, based on the preset peak detection amplitude conditions, a plurality of target peak detection amplitudes are determined by adopting the vibration speed amplitude sequences associated with each potential defect measuring point, the measuring point vibration speed amplitudes associated with the potential defect measuring points are obtained, the measuring point vibration speed amplitudes are compared with the associated target peak detection amplitudes, if the measuring point vibration speed amplitude is larger than the target peak detection amplitude, the potential defect measuring point associated with the measuring point vibration speed amplitude at the current moment is taken as the target fault measuring point, and the position where the target fault measuring point is located is judged to be out of order; the method solves the technical problem that the fault monitoring method of the bridge arm reactor at present cannot timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the structure of the bridge arm reactor; the method has the advantages that the original running state of the bridge arm reactor is not affected, the surface vibration distribution of the bridge arm reactor can be accurately obtained, the sensitivity to fault response is high, meanwhile, the method has high reliability in field practical application, and the method is easier to realize.
According to the invention, on the basis of accurately monitoring the fault occurrence position of the bridge arm reactor, the fault trend is monitored, if the degradation degree is increased, the feedback maintenance can be timely carried out, so that a better monitoring effect is achieved, and the capture of the fault evolution trend of the bridge arm reactor is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a step flowchart of a fault monitoring method for a bridge arm reactor according to a first embodiment of the present invention;
fig. 2 is a step flowchart of a fault monitoring method for a bridge arm reactor according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an optical fiber array acquisition device according to a second embodiment of the present invention;
FIG. 4 is a graph showing vibration distribution of measuring points according to a second embodiment of the present invention;
Fig. 5 is a block diagram of a fault monitoring system for a bridge arm reactor according to a third embodiment of the present invention.
Wherein the reference numerals have the following meanings:
1. encapsulating; 2. an optical fiber array probe; 3. a signal acquisition card; 4. and analyzing the terminal.
Detailed Description
The embodiment of the invention provides a fault monitoring method, a system, equipment and a medium for a bridge arm reactor, which are used for solving the technical problem that the fault occurrence position of the bridge arm reactor cannot be timely and accurately monitored on the basis of not damaging the structure of the bridge arm reactor in the conventional fault monitoring method for the bridge arm reactor.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a fault monitoring method for a bridge arm reactor according to an embodiment of the present invention.
The invention provides a fault monitoring method of a bridge arm reactor, which comprises the following steps:
and step 101, responding to the received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and acquiring vibration speed signals of a plurality of measuring points of each package 1 at the current moment.
Bridge arm reactor: the phase reactor and the leakage reactance of the connecting transformer jointly form a group band for transmitting power between the converter and the alternating current system, and the group band cooperates with the valve side voltage of the connecting transformer to determine the power transmission capacity of the converter, realize the regulation and control of active power and reactive power and restrain short-circuit current.
The fault monitoring request refers to request information for monitoring faults of bridge arm reactors.
The bridge arm reactor to be judged refers to a bridge arm reactor for fault monitoring.
The vibration speed signal of the measuring point refers to the vibration speed signal of each measuring point on the encapsulation 1 obtained through the optical fiber array acquisition device.
In the embodiment of the invention, the fault monitoring request is read in response to the received fault monitoring request, the bridge arm reactor to be judged for fault monitoring is determined, and the vibration speed signal of the measuring point corresponding to each measuring point on each package 1 at the current moment is obtained through the optical fiber array acquisition device.
And 102, performing sequence conversion on vibration speed signals of all measuring points to generate a plurality of target measuring point sequences.
The sequence conversion refers to performing distribution operation on the vibration speed signals of the measuring points through fast Fourier transformation, sequencing and based on a preset vibration distribution strategy.
It should be noted that the preset vibration distribution strategy may be a first order differential method, a dichotomy method, a second order center differential method, or the like.
In the embodiment of the invention, the vibration speed signals of all measuring points are subjected to fast Fourier transform, ordered and distributed based on a preset vibration distribution strategy, so that a plurality of target measuring point sequences are generated.
It is worth mentioning that here each envelope 1 corresponds to a sequence of target points.
And 103, extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points.
The preset peak condition refers to selecting a peak point from a plurality of values in the target measuring point sequence, namely, the values meetv i -v i-1 > 0 andv i+1 -v i ＜0。
in the embodiment of the invention, the to-be-judged measuring point at the peak point is extracted from each target measuring point sequence to serve as a potential defect measuring point.
It should be noted that, each package 1 of the bridge arm reactor to be judged is provided with a plurality of measuring points to be judged.
And 104, determining a plurality of target peak detection amplitudes by adopting vibration speed amplitude sequences associated with each potential defect measuring point based on a preset peak detection amplitude condition.
The preset peak detection amplitude condition means that the monitoring threshold K is prescribed, and is usually set to 0.3.
In the embodiment of the invention, based on a specified monitoring threshold, vibration speed amplitude sequences associated with each potential defect measuring point are adopted to determine a target peak detection amplitude corresponding to each vibration speed amplitude sequence.
It is worth mentioning that each envelope 1 corresponds to a target peak detection amplitude.
And 105, acquiring the vibration speed amplitude of the measuring point associated with the potential defect measuring point, and comparing the vibration speed amplitude of the measuring point with the associated target peak detection amplitude.
In the embodiment of the invention, the vibration speed amplitude of the measuring point associated with the potential defect measuring point is compared with the corresponding target peak detection amplitude.
It should be noted that there may be one potential defect site or a plurality of potential defect sites on each package 1, but each package 1 has only one corresponding target peak detection amplitude, so the vibration speed amplitudes of the sites associated with all the potential defect sites on each package 1 need to be compared with the target peak detection amplitudes.
And 106, if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude, taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point, and judging that the position of the target fault measuring point is faulty.
In the embodiment of the invention, if the vibration speed amplitude of the measuring point associated with the potential defect measuring point is larger than the detection amplitude of the target peak value, the potential defect measuring point associated with the vibration speed amplitude of the measuring point at the current moment is taken as the target fault measuring point, and the position of the target fault measuring point is judged to have faults.
In the invention, a bridge arm reactor to be judged corresponding to a fault monitoring request is determined in response to the received fault monitoring request, a plurality of measuring point vibration speed signals of each encapsulation 1 at the current moment are obtained, all measuring point vibration speed signals are subjected to sequence conversion, a plurality of target measuring point sequences are generated, a plurality of measuring points to be judged meeting a preset peak condition are extracted from each target measuring point sequence to serve as potential defect measuring points, based on the preset peak detection amplitude condition, a plurality of target peak detection amplitude values are adopted for the vibration speed sequences related to each potential defect measuring point, the measuring point vibration speed amplitude values related to the potential defect measuring points are obtained, the measuring point vibration speed amplitude values are compared with the related target peak detection amplitude values, if the measuring point vibration speed amplitude values are larger than the target peak detection amplitude values, the potential defect measuring points related to the measuring point vibration speed amplitude values at the current moment are taken as target fault measuring points, and faults are judged at the positions where the target fault measuring points are located; the method solves the technical problem that the fault monitoring method of the bridge arm reactor at present cannot timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the structure of the bridge arm reactor; the method has the advantages that the original running state of the bridge arm reactor is not affected, the surface vibration distribution of the bridge arm reactor can be accurately obtained, the sensitivity to fault response is high, meanwhile, the method has high reliability in field practical application, and the method is easier to realize.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a fault monitoring method for a bridge arm reactor according to a second embodiment of the present invention.
The invention provides a fault monitoring method of a bridge arm reactor, which comprises the following steps:
Further, referring to the fiber array acquisition device, step 201 may include the sub-steps of:
s11, responding to the received fault monitoring request, and selecting a bridge arm reactor corresponding to the fault monitoring request as the bridge arm reactor to be judged.
In the embodiment of the invention, the fault monitoring request is read in response to the received fault monitoring request, and the bridge arm reactor corresponding to the fault monitoring request is used as the bridge arm reactor to be judged.
S12, acquiring vibration speed signals of a plurality of measuring points of each package 1 of the bridge arm reactor to be judged at the current moment through an optical fiber array acquisition device.
Optical fiber array: an array is formed by mounting a bundle of optical fibers or an optical fiber ribbon on a substrate at predetermined intervals.
As shown in fig. 3, each bridge arm reactor is sleeved together by a plurality of envelopes 1, n vibration measuring points are respectively arranged in the vertical direction of each envelope 1, and the distance between the measuring points on each envelope 1 is 10cm.
The optical fiber array acquisition device comprises an optical fiber array probe 2, a signal acquisition card 3 and an analysis terminal 4, wherein parameters of the optical fiber array acquisition device are required to meet the vibration response measurement requirement of a bridge arm reactor, the optical fiber array probe 2 is fixedly connected to each measuring point, the signal acquisition card 3 is respectively connected with a signal transmission end of the optical fiber array and the analysis terminal 4, in the embodiment, the measuring range is 10mm/s, and the sampling frequency band is 0-3MHz.
In the embodiment of the invention, the optical fiber array acquisition device acquires the vibration speed signals of the measuring points at the current moment of each measuring point through the optical fiber array probe 2 according to the preset data acquisition interval, wherein the preset data acquisition interval is 10 min/point, and then performs digital-to-analog conversion on the acquired analog signals through the signal acquisition card 3 to generate corresponding digital signals, and acquires the vibration speed signals of the measuring points at the next moment of each measuring point every 10min as a period; firstly, a fiber array probe 2 is used for acquiring a measuring point vibration speed analog signal of each measuring point at the current moment, then a signal acquisition card 3 is used for carrying out digital-to-analog conversion on the acquired analog signal to generate a corresponding digital signal, and the corresponding digital signal is uploaded to an analysis terminal 4 in a fiber channel or wireless network mode, as shown in fig. 4, and fig. 4 is a measuring point vibration distribution diagram.
And 202, performing sequence conversion on vibration speed signals of all measuring points to generate a plurality of target measuring point sequences.
Further, step 202 may comprise the sub-steps of:
s21, performing fast Fourier transform on all the measuring point vibration speed signals, and selecting a plurality of vibration speed amplitudes under a preset frequency component as measuring point vibration speed amplitudes.
Fast fourier transform (FFT: fast Fourier transform): fourier transforms are in discrete form in both the time and frequency domains, and are a collective term for efficient, fast computing methods for computer computing Discrete Fourier Transforms (DFT).
In the embodiment of the invention, the vibration speed signals of all measuring points are subjected to fast fourier transformation, namely the vibration speed signals of the measuring points are converted from a time domain to a frequency domain, so that signal spectrogram data are obtained, and then a plurality of vibration speed amplitudes under a preset frequency component are selected to be used as the vibration speed amplitudes of the measuring points according to the signal spectrogram data, and the preset frequency component is a 100Hz component.
S22, sorting vibration speed amplitudes of a plurality of measuring points in each encapsulation 1 according to a preset measuring point sequence, and generating vibration speed amplitude sequences corresponding to the plurality of encapsulation 1.
The preset measuring point sequence refers to the preset measuring point sequence on the package 1.
In the embodiment of the invention, the vibration speed amplitude values of the plurality of measuring points in each package 1 are ordered according to the preset measuring point sequence on the package 1, so that a vibration speed amplitude value sequence corresponding to the plurality of packages 1 is generated.
Taking the mth envelope 1 as an example, the vibration velocity amplitude sequence on the envelope 1 is expressed asA m =[v 1 ,v 2 ,…,v n ]Where v represents the vibration velocity amplitude of the vibration signal of a certain measuring point under the component of 100Hz, and n is the number of measuring points on the envelope 1. The number of the encapsulated 1 of each bridge arm reactor is more than or equal to 1. 100hz is the primary frequency of reactor vibration, and therefore vibration velocity amplitudes at less than 100hz component are chosen.
It is worth mentioning that each envelope 1 corresponds to a sequence of vibration velocity amplitudes.
S23, carrying out distribution operation on each vibration speed amplitude sequence based on a preset vibration distribution strategy to generate a plurality of target measuring point sequences.
The preset vibration distribution strategy may be a first order difference method, a dichotomy, a second order center difference method, or the like, and in the present invention, the first order difference method is preferable.
In the embodiment of the invention, based on a first-order difference method, first-order differences are calculated for vibration speed amplitude sequences corresponding to each package 1, and a plurality of target measuring point sequences are generated.
Taking the mth encapsulation 1 as an example, a first-order differential sequence (namely a target measuring point sequence) is extracted aiming at the vibration speed amplitude sequence
。
And 203, extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points.
In the embodiment of the invention, a plurality of target measuring point sequences satisfying the preset peak condition (satisfyingv i -v i-1 > 0 andv i+1 -v i and the to-be-judged measuring points less than 0) are used as potential defect measuring points.
For target measuring point sequence
Find peak position when meetingv i -v i-1 > 0 andv i+1 -v i when < 0, williMarking as potential defect measuring points, and obtaining one or more potential defect measuring points by counting the sequence elements one by one.
And 204, determining a plurality of target peak detection amplitudes by adopting vibration speed amplitude sequences associated with each potential defect measuring point based on preset peak detection amplitude conditions.
Further, step 204 may include the sub-steps of:
s31, selecting a maximum value and a minimum value from vibration speed amplitude sequences associated with each potential defect measuring point respectively, and generating a plurality of groups of edge amplitude data, wherein the edge amplitude data comprise an amplitude maximum value and an amplitude minimum value.
In the embodiment of the invention, the maximum value and the minimum value are selected from the vibration speed amplitude sequences associated with the potential defect measuring points, so that a plurality of groups of edge amplitude data are generated, wherein the edge amplitude data comprise the maximum value and the minimum value of the amplitude.
It is worth mentioning that each value of the vibration velocity amplitude sequence is a first order difference of two adjacent vibration velocity amplitudes, that is, the vibration velocity amplitude sequence is composed of a plurality of first order difference amplitude elements, and the maximum value and the minimum value, that is, the amplitude maximum value and the amplitude minimum value, are selected from the plurality of first order difference amplitude elements.
S32, performing difference operation by adopting the maximum amplitude value and the minimum amplitude value to generate a plurality of corresponding first difference values.
S33, multiplying each first difference value by a preset monitoring threshold value to generate a plurality of corresponding first multiplication values.
S34, performing sum operation by adopting the first multiplication value and the corresponding amplitude minimum value respectively, and generating a plurality of corresponding target peak detection amplitudes.
In the embodiment of the present invention, in a specific implementation of S32-S34, in order to facilitate implementation of the method, the above process may be converted into a form of formula encapsulation, and the expression mode of the target peak detection amplitude is as follows:
in the formula ,
represents the maximum value of the amplitude in the ith vibration velocity amplitude sequence,/->
Representing the minimum amplitude value in the ith vibration speed amplitude sequence,/and>
representing a preset monitoring threshold, < >>
Representing the i-th target peak detection amplitude.
In the embodiment of the invention, the vibration speed amplitude of the measuring point associated with the potential defect measuring point is obtained
And the vibration speed amplitude of the measuring point is +.>
Associated purposePeak detection amplitude +.>
A comparison is made.
And 206, if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude, taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point, and judging that the position of the target fault measuring point is faulty.
In the embodiment of the invention, if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude, the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment is taken as the target fault measuring point, the position of the target fault measuring point is judged to have faults, and the target fault measuring point is marked and an alarm is sent out.
Step 207, jumping and executing the steps of responding to the received fault monitoring request according to a preset time interval, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and obtaining vibration speed signals of a plurality of measuring points of each package 1 at the current moment, and determining a plurality of target fault measuring points corresponding to the next moment.
In the embodiment of the present invention, the preset time interval is 10min, each 10min is a period, and step 201 to step 206 are skipped, so that a plurality of target fault measurement points corresponding to the next time can be determined.
And step 208, determining the fault degradation degree of the position of the target fault measuring point corresponding to the next moment by adopting the vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point.
Further, step 208 may include the sub-steps of:
s41, inputting a preset fault degree measuring function by adopting vibration speed amplitude values of measuring points corresponding to two adjacent time points of the same target fault measuring point, and generating a corresponding target fault degree measuring factor.
In the embodiment of the invention, the vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point are adopted to input a preset fault degree measuring function, and the corresponding target fault degree measuring factor is generated.
Further, the fault degree measurement function specifically includes:
wherein ,
the target fault degree measuring factor corresponding to the ith target fault measuring point at the next moment is represented,
representing the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the current moment,/for the measuring point >
And the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the next moment is represented.
S42, comparing the target fault degree measuring factor with a preset standard degree factor.
And S43, if the target fault degree measuring factor is larger than the preset standard degree factor, judging that the fault at the position of the corresponding target fault measuring point at the next moment is degraded.
And S44, if the target fault degree measuring factor is smaller than or equal to the preset standard degree factor, judging that the fault at the position of the corresponding target fault measuring point at the next moment is not degraded.
For example, when 2022, month 4, and 2 days 17:00, the vibration speed amplitude at the i position (the position where the target fault point is located at the current time) is 0.01mm/s, when 2022, month 4, and 2 days 17:10, the vibration speed amplitude at the i position (the position where the target fault point is located at the next time) is 0.05mm/s, since 0.05/0.01 (the target fault degree scale factor) > 1 (the preset standard degree factor), it is indicated that the fault degradation degree at the i position is gradually increased, and 0.05/0.01 (the target fault degree scale factor) < 1 (the preset standard degree factor), it is indicated that the fault degradation degree at the i position is not increased.
It is worth mentioning that the fault trend is monitored on the basis of accurately monitoring the fault occurrence position of the bridge arm reactor, if the degradation degree is increased, the fault trend can be fed back and maintained timely, so that a better monitoring effect is achieved, and the fault evolution trend capture of the bridge arm reactor is realized.
When the optical fiber array is adopted to capture the fault evolution trend of the bridge arm reactor, the optical fiber array is not directly electrically connected with the tested equipment, the original running state of the bridge arm reactor is not affected, the surface vibration distribution of the bridge arm reactor can be sensitively obtained, meanwhile, the interference of the field environment can be effectively avoided, and the device has stronger reliability, sensitivity and accuracy in the monitoring application of the field equipment.
In the invention, a bridge arm reactor to be judged corresponding to a fault monitoring request is determined in response to the received fault monitoring request, a plurality of measuring point vibration speed signals of each encapsulation 1 at the current moment are obtained, all measuring point vibration speed signals are subjected to sequence conversion, a plurality of target measuring point sequences are generated, a plurality of measuring points to be judged meeting a preset peak condition are extracted from each target measuring point sequence to serve as potential defect measuring points, based on the preset peak detection amplitude condition, a plurality of target peak detection amplitude values are adopted for the vibration speed sequences related to each potential defect measuring point, the measuring point vibration speed amplitude values related to the potential defect measuring points are obtained, the measuring point vibration speed amplitude values are compared with the related target peak detection amplitude values, if the measuring point vibration speed amplitude values are larger than the target peak detection amplitude values, the potential defect measuring points related to the measuring point vibration speed amplitude values at the current moment are taken as target fault measuring points, and faults are judged at the positions where the target fault measuring points are located; the method solves the technical problem that the fault monitoring method of the bridge arm reactor at present cannot timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the structure of the bridge arm reactor; the method has the advantages that the original running state of the bridge arm reactor is not affected, the surface vibration distribution of the bridge arm reactor can be accurately obtained, the sensitivity to fault response is high, meanwhile, the method has high reliability in field practical application, and the method is easier to realize.
Referring to fig. 5, fig. 5 is a block diagram of a fault monitoring system for a bridge arm reactor according to a third embodiment of the present invention.
The invention provides a fault monitoring system of a bridge arm reactor, which comprises:
the response module 301 is configured to determine a bridge arm reactor to be determined corresponding to the fault monitoring request and obtain vibration speed signals of multiple measuring points of each package 1 at a current moment in response to the received fault monitoring request.
The sequence conversion module 302 is configured to perform sequence conversion on all the measurement point vibration speed signals, so as to generate a plurality of target measurement point sequences.
The potential defect measuring point module 303 is configured to extract, from each target measuring point sequence, a plurality of to-be-determined measuring points that meet a preset peak condition as potential defect measuring points.
The target peak detection amplitude module 304 is configured to determine a plurality of target peak detection amplitudes by using a vibration velocity amplitude sequence associated with each potential defect measurement point based on a preset peak detection amplitude condition.
The amplitude comparison module 305 is configured to obtain a measurement point vibration speed amplitude associated with the potential defect measurement point, and compare the measurement point vibration speed amplitude with an associated target peak detection amplitude.
And the fault judging module 306 is configured to take the potential defect measurement point associated with the vibration speed amplitude of the measurement point at the current moment as the target fault measurement point if the vibration speed amplitude of the measurement point is greater than the target peak detection amplitude, and judge that the position of the target fault measurement point is faulty.
Further, referring to the optical fiber array acquisition device, the response module 301 includes:
the bridge arm reactor sub-module to be judged is used for responding to the received fault monitoring request and selecting a bridge arm reactor corresponding to the fault monitoring request as the bridge arm reactor to be judged.
And the measuring point vibration speed signal submodule is used for acquiring a plurality of measuring point vibration speed signals of the current moment of each encapsulation 1 of the bridge arm reactor to be judged through the optical fiber array acquisition device.
Further, the sequence conversion module 302 includes:
and the measuring point vibration speed amplitude submodule is used for carrying out fast Fourier transform on all measuring point vibration speed signals, and selecting a plurality of vibration speed amplitudes under a preset frequency component as measuring point vibration speed amplitudes.
And the vibration speed amplitude sequence sub-module is used for sequencing the vibration speed amplitudes of the plurality of measuring points in each encapsulation 1 according to the preset measuring point sequence to generate a vibration speed amplitude sequence corresponding to the plurality of encapsulation 1.
And the target measuring point sequence submodule is used for carrying out distribution operation on each vibration speed amplitude sequence based on a preset vibration distribution strategy to generate a plurality of target measuring point sequences.
Further, the target peak detection amplitude module 304 includes:
And the edge amplitude data sub-module is used for respectively selecting a maximum value and a minimum value from vibration speed amplitude sequences associated with each potential defect measuring point to generate a plurality of groups of edge amplitude data, wherein the edge amplitude data comprises an amplitude maximum value and an amplitude minimum value.
And the difference value operation submodule is used for carrying out difference value operation by adopting the maximum value of the amplitude value and the minimum value of the corresponding amplitude value respectively to generate a plurality of corresponding first difference values.
And the multiplication operation sub-module is used for carrying out multiplication operation on each first difference value and a preset monitoring threshold value to generate a plurality of corresponding first multiplication values.
And the sum value operation sub-module is used for performing sum value operation by adopting the first multiplication value and the corresponding amplitude minimum value respectively to generate a plurality of corresponding target peak detection amplitudes.
Further, the method further comprises the following steps:
the jump module is used for jumping and executing the steps of responding to the received fault monitoring request according to a preset time interval, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, acquiring a plurality of measuring point vibration speed signals of each package 1 at the current moment, and determining a plurality of target fault measuring points corresponding to the next moment.
And the fault degradation degree module is used for determining the fault degradation degree of the position of the target fault measuring point corresponding to the next moment by adopting the vibration speed amplitude values of the measuring points corresponding to the two adjacent moments of the same target fault measuring point.
Further, the failure degradation degree module includes:
the target fault degree measuring factor submodule is used for inputting a preset fault degree measuring function by adopting the vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point to generate a corresponding target fault degree measuring factor;
and the degree factor comparison sub-module is used for comparing the target fault degree measurement factor with a preset standard degree factor.
And the first judging sub-module is used for judging that the fault at the position of the corresponding target fault measuring point at the next moment is deteriorated if the target fault degree measuring factor is larger than the preset standard degree factor.
And the second judging sub-module is used for judging that the fault at the position of the corresponding target fault measuring point at the next moment is not degraded if the target fault degree measuring factor is smaller than or equal to the preset standard degree factor.
Further, the fault degree measurement function specifically includes:
wherein ,
the target fault degree measuring factor corresponding to the ith target fault measuring point at the next moment is represented,
representing the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the current moment,/for the measuring point>
And the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the next moment is represented.
In the invention, a bridge arm reactor to be judged corresponding to a fault monitoring request is determined in response to the received fault monitoring request, a plurality of measuring point vibration speed signals of each encapsulation 1 at the current moment are obtained, all measuring point vibration speed signals are subjected to sequence conversion, a plurality of target measuring point sequences are generated, a plurality of measuring points to be judged meeting a preset peak condition are extracted from each target measuring point sequence to serve as potential defect measuring points, based on the preset peak detection amplitude condition, a plurality of target peak detection amplitude values are adopted for the vibration speed sequences related to each potential defect measuring point, the measuring point vibration speed amplitude values related to the potential defect measuring points are obtained, the measuring point vibration speed amplitude values are compared with the related target peak detection amplitude values, if the measuring point vibration speed amplitude values are larger than the target peak detection amplitude values, the potential defect measuring points related to the measuring point vibration speed amplitude values at the current moment are taken as target fault measuring points, and faults are judged at the positions where the target fault measuring points are located; the method solves the technical problem that the fault monitoring method of the bridge arm reactor at present cannot timely and accurately monitor the fault occurrence position of the bridge arm reactor on the basis of not damaging the structure of the bridge arm reactor; the method has the advantages that the original running state of the bridge arm reactor is not affected, the surface vibration distribution of the bridge arm reactor can be accurately obtained, the sensitivity to fault response is high, meanwhile, the method has high reliability in field practical application, and the method is easier to realize.
An electronic device according to an embodiment of the present invention includes: a memory and a processor, the memory storing a computer program; the computer program, when executed by the processor, causes the processor to perform the fault monitoring method for the bridge arm reactor according to any one of the embodiments described above.
The memory may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory has memory space for program code to perform any of the method steps described above. For example, the memory space for the program code may include individual program code for implementing the various steps in the above method, respectively. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. The program code may be compressed, for example, in a suitable form. The code, when executed by a computing processing device, causes the computing processing device to perform the steps in the method described above.
The embodiment of the invention provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed, the fault monitoring method of the bridge arm reactor according to any embodiment of the invention is realized.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The fault monitoring method for the bridge arm reactor is characterized by comprising the following steps of:
responding to a received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and acquiring vibration speed signals of a plurality of measuring points of each package at the current moment;
performing sequence conversion on all the measuring point vibration speed signals to generate a plurality of target measuring point sequences;
extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points;
based on a preset peak detection amplitude condition, determining a plurality of target peak detection amplitudes by adopting a vibration speed amplitude sequence associated with each potential defect measuring point;
Acquiring the vibration speed amplitude of the measuring point associated with the potential defect measuring point, and comparing the vibration speed amplitude of the measuring point with the associated target peak detection amplitude;
and if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude, taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point, and judging that the position of the target fault measuring point is faulty.
2. The fault monitoring method for bridge arm reactors according to claim 1, which is characterized by comprising the steps of, in response to a received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request and obtaining vibration speed signals of a plurality of measuring points at the current moment of each package, wherein the fault monitoring method comprises the following steps:
responding to a received fault monitoring request, and selecting a bridge arm reactor corresponding to the fault monitoring request as a bridge arm reactor to be judged;
and acquiring vibration speed signals of a plurality of measuring points of each encapsulation current moment of the bridge arm reactor to be judged through the optical fiber array acquisition device.
3. The fault monitoring method of the bridge arm reactor according to claim 1, wherein the step of performing sequence conversion on all the measurement point vibration speed signals to generate a plurality of target measurement point sequences includes:
Performing fast Fourier transform on all the measuring point vibration speed signals, and selecting a plurality of vibration speed amplitudes under a preset frequency component as measuring point vibration speed amplitudes;
sequencing vibration speed amplitudes of a plurality of measuring points in each package according to a preset measuring point sequence to generate vibration speed amplitude sequences corresponding to the packages;
and carrying out distribution operation on each vibration speed amplitude sequence based on a preset vibration distribution strategy to generate a plurality of target measuring point sequences.
4. The fault monitoring method of the bridge arm reactor according to claim 1, wherein the step of determining a plurality of target peak detection amplitudes by using the vibration velocity amplitude sequences associated with each potential defect measurement point based on a preset peak detection amplitude condition includes:
selecting a maximum value and a minimum value from the vibration speed amplitude sequences associated with the potential defect measuring points respectively, and generating a plurality of groups of edge amplitude data, wherein the edge amplitude data comprises an amplitude maximum value and an amplitude minimum value;
performing difference operation by adopting the maximum amplitude value and the minimum amplitude value to generate a plurality of corresponding first difference values;
Performing multiplication operation on each first difference value and a preset monitoring threshold value to generate a plurality of corresponding first multiplication values;
and performing sum operation by adopting the first multiplication value and the corresponding amplitude minimum value respectively to generate a plurality of corresponding target peak detection amplitudes.
5. The fault monitoring method of the bridge arm reactor according to claim 1, characterized in that the method further comprises:
the step of responding to the received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request, and obtaining vibration speed signals of a plurality of measuring points at the current moment of each package is carried out in a jumping mode according to a preset time interval, and determining a plurality of target fault measuring points corresponding to the next moment;
and determining the fault degradation degree of the position of the target fault measuring point corresponding to the next moment by adopting the vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point.
6. The fault monitoring method of the bridge arm reactor according to claim 5, wherein the step of determining the fault degradation degree of the position of the target fault measuring point corresponding to the next time by using the vibration speed amplitudes of the measuring points corresponding to two adjacent time points of the same target fault measuring point includes:
Inputting a preset fault degree measuring function by adopting vibration speed amplitude values of the measuring points corresponding to two adjacent moments of the same target fault measuring point, and generating a corresponding target fault degree measuring factor;
comparing the target fault degree measurement factor with a preset standard degree factor;
if the target fault degree measuring factor is larger than the preset standard degree factor, judging that the fault at the position of the target fault measuring point corresponding to the next moment is degraded;
and if the target fault degree measuring factor is smaller than or equal to the preset standard degree factor, judging that the fault at the position of the target fault measuring point corresponding to the next moment is not degraded.
7. The fault monitoring method of the bridge arm reactor according to claim 6, wherein the fault degree measurement function specifically includes:
wherein ,
indicating a target fault degree measuring factor corresponding to the i-th target fault measuring point at the next moment,
representing the vibration speed amplitude of the measuring point corresponding to the ith target fault measuring point at the current moment,/of the target fault measuring point>
Representing the ith target fault measuring point pair at the next momentAnd the vibration speed amplitude of the measuring point is required.
8. A fault monitoring system for a bridge arm reactor, comprising:
the response module is used for responding to the received fault monitoring request, determining a bridge arm reactor to be judged corresponding to the fault monitoring request and obtaining vibration speed signals of a plurality of measuring points of each package at the current moment;
the sequence conversion module is used for carrying out sequence conversion on all the measuring point vibration speed signals to generate a plurality of target measuring point sequences;
the potential defect measuring point module is used for extracting a plurality of to-be-judged measuring points meeting a preset peak condition from each target measuring point sequence to serve as potential defect measuring points;
the target peak detection amplitude module is used for determining a plurality of target peak detection amplitudes by adopting vibration speed amplitude sequences associated with each potential defect measuring point based on preset peak detection amplitude conditions;
the amplitude comparison module is used for acquiring the vibration speed amplitude of the measuring point associated with the potential defect measuring point and comparing the vibration speed amplitude of the measuring point with the associated target peak detection amplitude;
and the fault judging module is used for taking the potential defect measuring point related to the vibration speed amplitude of the measuring point at the current moment as a target fault measuring point and judging that the position of the target fault measuring point is faulty if the vibration speed amplitude of the measuring point is larger than the target peak detection amplitude.
9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the fault monitoring method of the bridge arm reactor of any one of claims 1-7.
10. A computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed, implements the fault monitoring method of the bridge arm reactor of any one of claims 1-7.
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895857A (en) * | 1995-11-08 | 1999-04-20 | Csi Technology, Inc. | Machine fault detection using vibration signal peak detector |
| US6178386B1 (en) * | 1998-08-14 | 2001-01-23 | The University Of Hartford | Method and apparatus for fault detection |
| CN103674545A (en) * | 2013-11-26 | 2014-03-26 | 成都阜特科技股份有限公司 | Mechanical fault detecting method |
| CN107101714A (en) * | 2017-05-09 | 2017-08-29 | 华北电力大学（保定） | A kind of transformer health Evaluation method based on multi-measuring point vibration signal characteristics |
| CN108198562A (en) * | 2018-02-05 | 2018-06-22 | 中国农业大学 | A kind of method and system for abnormal sound in real-time positioning identification animal house |
| CN109708907A (en) * | 2018-11-30 | 2019-05-03 | 浙江胄天科技股份有限公司 | A kind of equipment fault feature extracting method based on envelope information |
| CN110058117A (en) * | 2019-04-10 | 2019-07-26 | 西安交通大学 | A kind of reactor interturn short circuit fault detection method based on outer encapsulating vibration distribution |
| CN110261108A (en) * | 2019-01-18 | 2019-09-20 | 北京化工大学 | Bearing fault method of identification when specified operating based on CNN color property figure |
| CN112347912A (en) * | 2020-11-05 | 2021-02-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Converter transformer running state judgment method and device based on black box model |
| CN113465734A (en) * | 2021-09-02 | 2021-10-01 | 清华大学 | Real-time estimation method for structural vibration |
| WO2021232655A1 (en) * | 2020-05-20 | 2021-11-25 | 国网河北省电力有限公司电力科学研究院 | Method for evaluating mechanical state of high-voltage shunt reactor on the basis of vibration feature |
| US20210364481A1 (en) * | 2020-05-20 | 2021-11-25 | State Grid Hebei Electric Power Research Institute | Method for evaluating mechanical state of high-voltage shunt reactor based on vibration characteristics |
| WO2022141623A1 (en) * | 2021-01-04 | 2022-07-07 | 中南大学 | Train compartment vibration monitoring method, vibration signal feature library establishment method and vibration signal feature library application method |
| CN115292872A (en) * | 2022-05-30 | 2022-11-04 | 中国特种设备检测研究院 | Roller coaster track defect positioning method, system, medium and equipment |
| CN115410729A (en) * | 2022-08-30 | 2022-11-29 | 中国核动力研究设计院 | Online monitoring method, system and medium for vibration of shaft seal pump of nuclear reactor |
| CN115758213A (en) * | 2022-11-14 | 2023-03-07 | 国网浙江省电力有限公司超高压分公司 | Method and device for evaluating harmonic interference degree of converter transformer excitation source by vibration signal |
| CN115931319A (en) * | 2022-10-27 | 2023-04-07 | 圣名科技(广州)有限责任公司 | Fault diagnosis method, fault diagnosis device, electronic equipment and storage medium |
-
2023
- 2023-05-15 CN CN202310539074.1A patent/CN116256054B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895857A (en) * | 1995-11-08 | 1999-04-20 | Csi Technology, Inc. | Machine fault detection using vibration signal peak detector |
| US6178386B1 (en) * | 1998-08-14 | 2001-01-23 | The University Of Hartford | Method and apparatus for fault detection |
| CN103674545A (en) * | 2013-11-26 | 2014-03-26 | 成都阜特科技股份有限公司 | Mechanical fault detecting method |
| CN107101714A (en) * | 2017-05-09 | 2017-08-29 | 华北电力大学（保定） | A kind of transformer health Evaluation method based on multi-measuring point vibration signal characteristics |
| CN108198562A (en) * | 2018-02-05 | 2018-06-22 | 中国农业大学 | A kind of method and system for abnormal sound in real-time positioning identification animal house |
| CN109708907A (en) * | 2018-11-30 | 2019-05-03 | 浙江胄天科技股份有限公司 | A kind of equipment fault feature extracting method based on envelope information |
| CN110261108A (en) * | 2019-01-18 | 2019-09-20 | 北京化工大学 | Bearing fault method of identification when specified operating based on CNN color property figure |
| CN110058117A (en) * | 2019-04-10 | 2019-07-26 | 西安交通大学 | A kind of reactor interturn short circuit fault detection method based on outer encapsulating vibration distribution |
| WO2021232655A1 (en) * | 2020-05-20 | 2021-11-25 | 国网河北省电力有限公司电力科学研究院 | Method for evaluating mechanical state of high-voltage shunt reactor on the basis of vibration feature |
| US20210364481A1 (en) * | 2020-05-20 | 2021-11-25 | State Grid Hebei Electric Power Research Institute | Method for evaluating mechanical state of high-voltage shunt reactor based on vibration characteristics |
| CN112347912A (en) * | 2020-11-05 | 2021-02-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Converter transformer running state judgment method and device based on black box model |
| WO2022141623A1 (en) * | 2021-01-04 | 2022-07-07 | 中南大学 | Train compartment vibration monitoring method, vibration signal feature library establishment method and vibration signal feature library application method |
| CN113465734A (en) * | 2021-09-02 | 2021-10-01 | 清华大学 | Real-time estimation method for structural vibration |
| CN115292872A (en) * | 2022-05-30 | 2022-11-04 | 中国特种设备检测研究院 | Roller coaster track defect positioning method, system, medium and equipment |
| CN115410729A (en) * | 2022-08-30 | 2022-11-29 | 中国核动力研究设计院 | Online monitoring method, system and medium for vibration of shaft seal pump of nuclear reactor |
| CN115931319A (en) * | 2022-10-27 | 2023-04-07 | 圣名科技(广州)有限责任公司 | Fault diagnosis method, fault diagnosis device, electronic equipment and storage medium |
| CN115758213A (en) * | 2022-11-14 | 2023-03-07 | 国网浙江省电力有限公司超高压分公司 | Method and device for evaluating harmonic interference degree of converter transformer excitation source by vibration signal |
Non-Patent Citations (2)
| Title |
|---|
| 吴经锋等: "基于 CNN 算法的并联电抗器机械故障诊断方法", 电工电能新技术, vol. 41, no. 12, pages 72 - 80 * |
| 郑一鸣;孙翔;张建平;李晨;于淼;: "振动监测方法在特高压电抗器缺陷分析中的应用", 浙江电力, vol. 37, no. 01, pages 27 - 31 * |
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