CN111750981A - Transformer vibration acceleration detection system, control method and device - Google Patents
Transformer vibration acceleration detection system, control method and device Download PDFInfo
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- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
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Abstract
The application relates to a system, a method and a device for detecting vibration acceleration of a transformer. The transformer vibration acceleration detection system includes: the vibration acceleration sensor is used for detecting the vibration acceleration of the transformer and outputting a detection signal; the piezoelectric vibration energy-taking device is used for collecting the energy of the vibration of the transformer and converting the energy into first electric energy; the wireless communication device is used for wirelessly transmitting the detection signal to the data analysis system; and the energy storage device is used for storing the first electric energy output by the piezoelectric vibration energy taking device and supplying power to the vibration acceleration sensor and the wireless communication device. The system can continuously generate vibration during operation based on the transformer, and mechanical energy of vibration is converted into electric energy by the piezoelectric vibration energy obtaining device to supply power to the vibration acceleration sensor and the wireless communication device, so that the system is simple in structure, does not need to be connected with a signal wire, cannot influence the insulation protection of the transformer, and improves the safety and reliability of transformer vibration monitoring.
Description
Technical Field
The application relates to the technical field of power equipment detection, in particular to a system, a control method and a device for detecting vibration acceleration of a transformer.
Background
Power transformers are one of the main devices of power plants and substations. The transformer has the functions of increasing voltage to transmit electric energy to an electricity utilization area in many aspects, and reducing the voltage to use voltages of all levels to meet the requirement of electricity utilization. Therefore, the power transformer is widely applied to a power network, and during the operation process of the power transformer, mechanical faults of iron cores and windings, such as deformation of a transformer winding and the like, caused by overvoltage impact and the like, can greatly affect the safe and stable operation of the transformer.
At present, an on-line monitoring method of a power transformer is mainly a vibration monitoring method, and the operation state is diagnosed by acquiring vibration measurement data of the power transformer. The vibration sensor used for vibration measurement is generally powered by a wired direct connection mode, a wireless additional battery mode or an electromagnetic induction energy-obtaining mode.
In the wired direct connection mode, a longer signal transmission line needs to be connected to the outer wall of the power transformer, so that the insulation margin of the power transformer and the safe operation of vibration signal acquisition equipment are affected; the wireless additional battery mode has the problems that the battery needs to be replaced regularly and the single measurement time is limited; the electromagnetic induction hanging wire energy taking needs to be connected with an energy taking coil in a sleeved mode on a power transmission line of a power transformer or an energy taking polar plate is arranged near the power transformer, an energy taking device is separated from a sensor, the installation procedure is complex, the insulation level of the power transformer is influenced to a certain degree, and higher requirements are placed on the insulation of the energy taking coil and the isolation of a vibration sensor. Therefore, the current power supply mode of the vibration sensor can affect the safety and accuracy of the vibration monitoring of the power transformer.
Disclosure of Invention
In view of the above, it is desirable to provide a transformer vibration acceleration detection system, a control method, and a device that can improve safety.
A transformer vibration acceleration detection system, comprising:
the vibration acceleration sensor is used for detecting the vibration acceleration of the transformer and outputting a detection signal;
the piezoelectric vibration energy-taking device is used for collecting the energy of the vibration of the transformer and converting the energy into first electric energy;
the wireless communication device is used for wirelessly transmitting the detection signal to a data analysis system;
and the energy storage device is used for storing the first electric energy output by the piezoelectric vibration energy taking device and supplying power to the vibration acceleration sensor and the wireless communication device.
In one embodiment, the wireless communication device is a microcontroller with wireless communication capability;
the microcontroller is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period and wirelessly transmitting the detection signal output by the vibration acceleration sensor to the data analysis system; and the vibration acceleration sensor is also used for carrying out abnormality identification according to the waveform of the detection signal, and when the waveform abnormality is identified, the vibration acceleration sensor is controlled to detect the vibration acceleration of the transformer in a preset second period, wherein the second period is smaller than the first period.
In one embodiment, the piezoelectric vibration energy-taking device includes: a support, three cantilevers and a weight;
the first ends of the three cantilevers are connected with the support, and the second ends of the three cantilevers are respectively and correspondingly provided with a heavy object;
the support is used for being installed on the transformer, and the resonant frequency of the piezoelectric vibration energy-taking device is close to or equal to the basic vibration frequency of the transformer.
In one embodiment, the method further comprises the following steps:
a solar cell for converting solar energy into second electric energy;
the energy storage device is also used for storing second electric energy output by the solar cell.
In one of the embodiments, the first and second electrodes are,
the energy storage device is a super capacitor or a lithium battery.
The transformer vibration acceleration detection control method is applied to the transformer vibration acceleration detection system, and the transformer vibration acceleration detection system further comprises a microcontroller; the method comprises the following steps:
outputting a first detection control signal to a vibration acceleration sensor, wherein the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
In one embodiment, the step of outputting the second detection control signal when the waveform abnormality of the detection signal is recognized includes:
and outputting the second detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has attenuation oscillation according to a preset characteristic waveform.
The device for detecting and controlling the vibration acceleration of the transformer is applied to the system for detecting the vibration acceleration of the transformer, and the system for detecting the vibration acceleration of the transformer also comprises a microcontroller; the device comprises:
the device comprises a first signal output module, a vibration acceleration sensor and a second signal output module, wherein the first signal output module is used for outputting a first detection control signal to the vibration acceleration sensor, and the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
the detection signal acquisition module is used for acquiring a detection signal output by the vibration acceleration;
the second signal output module is used for outputting a second detection control signal when the waveform of the detection signal is identified to be abnormal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
outputting a first detection control signal to a vibration acceleration sensor, wherein the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
outputting a first detection control signal to a vibration acceleration sensor, wherein the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
According to the transformer vibration acceleration detection system and the control method and device, mechanical energy of transformer vibration is collected through the piezoelectric vibration energy taking device and is converted into first electric energy to be output to the energy storage device for storage, the energy storage device supplies power to the vibration acceleration sensor and the wireless communication device, the wireless communication device wirelessly sends a detection signal output by the vibration acceleration sensor according to the vibration acceleration of the transformer to the data analysis system, vibration can be continuously generated during operation of the transformer, the piezoelectric vibration energy taking device is used for converting the mechanical energy of the vibration into the electric energy to supply power to the vibration acceleration sensor and the wireless communication device, the structure is simple, a signal line does not need to be connected, the influence on the insulation protection of the transformer is avoided, and the safety and the reliability of transformer vibration monitoring are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vibration acceleration detection system of a transformer in an embodiment;
FIG. 2 is a schematic structural diagram of a piezoelectric vibration energy-extracting device according to an embodiment;
FIG. 3 is a diagram illustrating the vibration spectrum of a transformer in an embodiment;
FIG. 4 is a schematic structural diagram of a vibration acceleration detection system of a transformer in another embodiment;
FIG. 5 is a schematic structural diagram of a vibration acceleration detection system of a transformer in a further embodiment;
FIG. 6 is a schematic structural diagram illustrating a method for detecting and controlling vibration acceleration of a transformer according to an embodiment;
fig. 7 is a block diagram of a vibration acceleration detection control apparatus of a transformer in one embodiment.
Description of reference numerals:
100. a vibration acceleration sensor; 200. a piezoelectric vibration energy-taking device; 201. a support; 202. a cantilever; 203. a weight; 300. a wireless communication device; 400. an energy storage device; 500. a data analysis system; 600. a rectifying circuit; 700. a solar cell; 801. a first signal output module; 802. a detection signal acquisition module; 803. and a second signal output module.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In one embodiment, as shown in fig. 1, there is provided a transformer vibration acceleration detection system, including:
a vibration acceleration sensor 100 for detecting a vibration acceleration of the transformer and outputting a detection signal;
the piezoelectric vibration energy-taking device 200 is used for collecting the energy of the vibration of the transformer and converting the energy into first electric energy;
a wireless communication device 300 for wirelessly transmitting the detection signal to the data analysis system 500;
the energy storage device 400 is configured to store the first electric energy output by the piezoelectric vibration energy obtaining device 200, and supply power to the vibration acceleration sensor 100 and the wireless communication device 300.
An acceleration sensor is a sensor capable of measuring acceleration. The damper is generally composed of a mass block, a damper, an elastic element, a sensitive element, an adjusting circuit and the like. In the acceleration process, the sensor obtains an acceleration value by measuring the inertial force borne by the mass block and utilizing Newton's second law. The vibration acceleration sensor 100 is a sensor for detecting acceleration of vibration of the transformer during operation. The piezoelectric vibration energy-taking device 200 can convert mechanical energy of vibration into electric energy using a piezoelectric effect. The piezoelectric effect is that when some dielectrics are deformed by external force in a certain direction, polarization phenomenon is generated in the dielectrics, and charges with opposite positive and negative polarities appear on two opposite surfaces of the dielectrics. When the external force is removed, it returns to an uncharged state, and this phenomenon is called the positive piezoelectric effect. When the direction of the force changes, the polarity of the charge changes. Conversely, when an electric field is applied in the polarization direction of the dielectrics, these dielectrics also deform, and after the electric field is removed, the deformation of the dielectrics disappears, which is called the inverse piezoelectric effect.
Carry out wireless data transmission through wireless communication device 300, avoid introducing the signal line and influence the insulation level of transformer to improve transformer vibration acceleration detecting system's convenient degree, can conveniently set up in any position of transformer.
The energy storage device 400 stores the first electric energy output by the piezoelectric vibration energy-taking device 200, and uses the stored electric energy to power the vibration acceleration sensor 100 and the wireless communication device 300.
Above-mentioned transformer vibration acceleration detecting system, collect the mechanical energy of transformer vibration through piezoelectric vibration energy taking device 200, and convert first electric energy output to energy memory 400 and save, energy memory 400 is vibration acceleration sensor 100 and the power supply of wireless communication device 300, wireless communication device 300 is the detected signal of vibration acceleration sensor 100 according to the vibration acceleration output that detects the transformer, wireless transmission to data analysis system 500, can continuously produce the vibration in service based on the transformer, utilize piezoelectric vibration energy taking device 200 to turn into the mechanical energy of vibration the electric energy and supply power for vibration acceleration sensor 100 and wireless communication device 300, the constitution is simple, and need not insert the signal line, can not exert an influence to the insulation protection of transformer, improve the security and the reliability of transformer vibration monitoring.
In one embodiment, the wireless communication device 300 is a microcontroller with wireless communication capabilities;
the microcontroller is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer in a preset first period, and wirelessly transmitting a detection signal output by the vibration acceleration sensor 100 to the data analysis system 500; and is further configured to perform abnormality recognition based on a waveform of the detection signal, and when the waveform is recognized to be abnormal, control the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset second period, where the second period is smaller than the first period.
The microcontroller may be an MCU or a CPU. When the transformer normally works, the microcontroller controls the vibration acceleration sensor 100 to detect in a first period, when the waveform of the detection signal is identified to be abnormal, the transformer may have a fault, and at the moment, the microcontroller controls the vibration acceleration sensor 100 to perform high-speed detection in a second period shorter than the first period, so that the detection frequency is improved, more data are provided for the data analysis system 500 to analyze, and the accuracy of fault analysis is improved. When the waveform is normal, namely the transformer works normally, the frequency of detection is reduced, the energy consumption of a transformer vibration acceleration detection system is reduced, the sustainability of the transformer vibration acceleration detection system is improved, and the vibration acceleration detection can be carried out on the transformer for a long time.
In one embodiment, as shown in fig. 2, the piezoelectric vibration energy-extracting device 200 includes: a support 201, three cantilevers 202 and a weight 203;
the first ends of the three cantilevers 202 are all connected with the support 201, and the second ends are respectively and correspondingly provided with a heavy object 203;
the support 201 is used for being mounted on a transformer, and the resonance frequency of the piezoelectric vibration energy-taking device 200 is close to or equal to the basic vibration frequency of the transformer.
The piezoelectric vibration energy taking device with the structure can be suitable for various different power transformers, and high-efficiency power taking can be realized on different power transformers only by adjusting the lengths of the three cantilevers and the mass of the weights hung on the three cantilevers respectively according to the vibration frequency spectrum of the power transformers, so that the power supply of the vibration acceleration sensor 100 and the microcontroller is met.
The vibration frequency spectrum of the transformer is measured through tests, and the arm lengths of the three cantilevers 202 of the piezoelectric vibration energy-taking device 200 and the mass of the weight 203 arranged on each cantilever 202 are selected according to the vibration frequency distribution condition of the transformer, so that the resonance frequency of the piezoelectric vibration energy-taking device 200 is close to or equal to the basic vibration frequency of the transformer, and the vibration energy-taking efficiency is improved. In one embodiment, the support 201 may be made of stainless steel, the weight 203 is made of lead, and the cantilever 202 is made of stainless steel and has piezoelectric elements attached to both sides of a wafer. Specifically, in one embodiment, the cantilever 202 employs two 0.6mm thick single layer piezoelectric elements (e.g., piezoceramic crystals, PZT) attached to both sides of a 0.2mm thick stainless steel wafer.
The parameter adjustment of the piezoelectric vibration energy extracting device 200 will be described by taking the vibration spectrum diagram of the transformer shown in fig. 3 as an example, in which the transformer has a fundamental vibration frequency of 100Hz and contains a large amount of harmonics such as 200Hz, 300Hz, and 400 Hz. The frequency response of the piezoelectric vibration energy-taking device 200 is simulated through simulation software, initial parameters are determined according to the attaching position space of the piezoelectric vibration energy-taking device 200, simulation is performed according to the initial parameters, if the resonance frequency is lower than the basic vibration frequency of the transformer, namely 100Hz, the inventor finds that the resonance frequency is reduced along with the increase of the arm length through research, therefore, the arm length of the cantilever 202 is shortened at the moment until the resonance frequency reaches 100Hz, then the mass of the weight 203 is adjusted according to the power generation of the piezoelectric vibration energy-taking device 200, if the power generation is low, the mass of the weight 203 is increased, the resonance frequency needs to be adjusted again after the mass of the weight 203 is adjusted, and the resonance frequency is guaranteed to reach 100 Hz. For example, the spatial dimension of the placement position of the transformer is limited to be greater than 5cm by 5cm, the arm lengths of the three cantilevers 202 are finally determined to be 35.3mm, 21.8mm and 16.3mm, respectively, and the corresponding natural vibration frequencies are 100Hz, 200Hz and 300 Hz. The energy extraction of the piezoelectric vibration energy extraction device 200 under the external excitation with the frequency of 100Hz and the acceleration amplitude of 1g is about 0.03W.
In one embodiment, as shown in fig. 4, the system for detecting vibration acceleration of a transformer further includes:
the rectifying circuit 600 is configured to rectify the ac electrical signal output by the piezoelectric vibration energy obtaining device 200 and output a dc electrical signal to the energy storage device 400 for storage.
In one embodiment, as shown in fig. 5, the system for detecting vibration acceleration of a transformer further includes:
a solar cell 700 for converting solar energy into second electric energy;
the energy storage device 400 is also used for storing the second electric energy output by the solar cell 700.
In order to further improve the sustainability of the transformer vibration acceleration detection system, the solar cell 700 is arranged to cooperate with the piezoelectric vibration energy-taking device 200 to generate electricity, so that the electric quantity of the energy storage device 400 is ensured to be more sufficient, and the vibration acceleration sensor 100 and the microcontroller can be continuously supplied with power.
According to the geographical position of the transformer and the surrounding geographical environment, the height angle of the solar cell 700 is designed, and the energy collection rate of the solar cell 700 is improved. Specifically, the running track of the sun is calculated by using simulation software, the range in which the sun is shielded is determined according to the surrounding environment of the transformer, for example, if a light shielding wall exists in front of the transformer, the light shielding range of the wall and the transformer itself is determined according to the light shielding direction angle and the height angle of the wall top relative to the installation position of the solar cell 700, the irradiation time of the solar light in different height angles in the daytime of the installation position of the simulation transformer in one year is determined, and the angle with the longest time for receiving the light is determined as the inclination angle of the solar cell 700.
In one embodiment, energy storage device 400 is a super capacitor or a lithium battery.
In one embodiment, a corresponding lithium battery protection board or a super capacitor voltage limiting circuit is selected according to the energy storage device 400, and when the charging voltage of the energy storage device 400 reaches a set value, the voltage reduction rectification is realized through low-power synchronous rectification, so as to provide stable power output for the vibration acceleration sensor 100 and the microcontroller.
In one embodiment, as shown in fig. 6, there is provided a method for controlling vibration acceleration detection of a transformer, which is applied to a system for detecting vibration acceleration of a transformer as described above, and the system for detecting vibration acceleration of a transformer further includes a microcontroller; the method is applied to a microcontroller for illustration, and the method comprises the following steps:
step S100 of outputting a first detection control signal to the vibration acceleration sensor 100, where the first detection control signal is used to control the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset first period;
step S200, acquiring a detection signal output by the vibration acceleration;
step S300, outputting a second detection control signal when the waveform of the detection signal is identified to be abnormal; the second detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset second period; the second period is less than the first period.
When the transformer normally works, the microcontroller outputs a first detection control signal, controls the vibration acceleration sensor 100 to perform detection in a first period, acquires a detection signal output by the vibration acceleration and performs waveform abnormality identification, when the waveform abnormality of the detection signal is identified, the transformer may have a fault at the moment, the microcontroller outputs a second detection control signal, controls the vibration acceleration sensor 100 to perform high-speed detection in a second period shorter than the first period, improves the frequency of detection, provides more data for the data analysis system 500 to perform analysis, and improves the accuracy of fault analysis. When the waveform is normal, namely the transformer works normally, the frequency of detection is reduced, the energy consumption of a transformer vibration acceleration detection system is reduced, the sustainability of the transformer vibration acceleration detection system is improved, and the vibration acceleration detection can be carried out on the transformer for a long time.
In one embodiment, the method for detecting and controlling vibration acceleration of a transformer further comprises:
and acquiring a third detection control signal, wherein the third detection control signal is a control signal output by the data analysis system 500 when the waveform of the detection signal is abnormal, and is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period.
The data analysis system 500 outputs a third detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has decaying oscillation according to a preset characteristic waveform.
In one embodiment, the step of outputting the second detection control signal when the waveform abnormality of the detection signal is recognized includes:
and outputting the second detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has attenuation oscillation according to a preset characteristic waveform.
Whether sudden short-time peak exists or not is detected, namely whether severe vibration such as impact exists or not is detected, whether abnormal waveforms such as leading oscillation occur or not is detected, if any, the waveforms are considered to be abnormal, and at the moment, the transformer is possibly in a fault, such as a fault of deformation of a transformer winding.
It should be understood that, although the steps in the flowchart of fig. 6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
In one embodiment, as shown in fig. 7, there is provided a transformer vibration acceleration detection control device, applied to the transformer vibration acceleration detection system as described above, the transformer vibration acceleration detection system further comprising a microcontroller; the device comprises:
a first signal output module 801, configured to output a first detection control signal to the vibration acceleration sensor 100, where the first detection control signal is used to control the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer in a preset first period;
a detection signal obtaining module 802, configured to obtain a detection signal output by the vibration acceleration;
a second signal output module 803, configured to output a second detection control signal when the waveform of the detection signal is identified to be abnormal; the second detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
For specific limitations of the transformer vibration acceleration detection control device, reference may be made to the above limitations on the transformer vibration acceleration detection control method, which is not described herein again. All or part of the modules in the vibration acceleration detection and control device of the transformer can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
outputting a first detection control signal to the vibration acceleration sensor 100, wherein the first detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset second period; the second period is less than the first period.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and outputting the second detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has attenuation oscillation according to a preset characteristic waveform.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
outputting a first detection control signal to the vibration acceleration sensor 100, wherein the first detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor 100 to detect the vibration acceleration of the transformer at a preset second period; the second period is less than the first period.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and outputting the second detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has attenuation oscillation according to a preset characteristic waveform.
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 hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
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 invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A transformer vibration acceleration detection system, comprising:
the vibration acceleration sensor is used for detecting the vibration acceleration of the transformer and outputting a detection signal;
the piezoelectric vibration energy-taking device is used for collecting the energy of the vibration of the transformer and converting the energy into first electric energy;
the wireless communication device is used for wirelessly transmitting the detection signal to a data analysis system;
and the energy storage device is used for storing the first electric energy output by the piezoelectric vibration energy taking device and supplying power to the vibration acceleration sensor and the wireless communication device.
2. The system according to claim 1, wherein the wireless communication device is a microcontroller having a wireless communication function;
the microcontroller is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period and wirelessly transmitting the detection signal output by the vibration acceleration sensor to the data analysis system; and the vibration acceleration sensor is also used for carrying out abnormality identification according to the waveform of the detection signal, and when the waveform abnormality is identified, the vibration acceleration sensor is controlled to detect the vibration acceleration of the transformer in a preset second period, wherein the second period is smaller than the first period.
3. The transformer vibration acceleration detection system according to claim 2, characterized in that the piezoelectric vibration energy-taking device includes: a support, three cantilevers and a weight;
the first ends of the three cantilevers are connected with the support, and the second ends of the three cantilevers are respectively and correspondingly provided with a heavy object;
the support is used for being installed on the transformer, and the resonant frequency of the piezoelectric vibration energy-taking device is close to or equal to the basic vibration frequency of the transformer.
4. The transformer vibration acceleration detection system of claim 3, characterized by further comprising:
a solar cell for converting solar energy into second electric energy;
the energy storage device is also used for storing second electric energy output by the solar cell.
5. The transformer vibration acceleration detection system according to any one of claims 1 to 4,
the energy storage device is a super capacitor or a lithium battery.
6. A vibration acceleration detection control method for a transformer, which is applied to the vibration acceleration detection system for a transformer according to any one of claims 1 to 5, wherein the vibration acceleration detection system for a transformer further comprises a microcontroller; the method comprises the following steps:
outputting a first detection control signal to a vibration acceleration sensor, wherein the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
acquiring a detection signal output by the vibration acceleration;
when the waveform of the detection signal is identified to be abnormal, outputting a second detection control signal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
7. The transformer vibration acceleration detection control method according to claim 6, wherein the step of outputting a second detection control signal when the waveform abnormality of the detection signal is recognized includes:
and outputting the second detection control signal when detecting that the waveform of the detection signal has a burst short-time peak value and/or detecting that the waveform of the detection signal has attenuation oscillation according to a preset characteristic waveform.
8. A vibration acceleration detection control device for a transformer, which is applied to the vibration acceleration detection system for a transformer according to any one of claims 1 to 5, the vibration acceleration detection system for a transformer further comprising a microcontroller; the device comprises:
the device comprises a first signal output module, a vibration acceleration sensor and a second signal output module, wherein the first signal output module is used for outputting a first detection control signal to the vibration acceleration sensor, and the first detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset first period;
the detection signal acquisition module is used for acquiring a detection signal output by the vibration acceleration;
the second signal output module is used for outputting a second detection control signal when the waveform of the detection signal is identified to be abnormal; the second detection control signal is used for controlling the vibration acceleration sensor to detect the vibration acceleration of the transformer in a preset second period; the second period is less than the first period.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of claim 6 or 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of claim 6 or 7.
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