CN116626530B - High-power voltage stabilizing source fault detection method and system based on double channels - Google Patents
High-power voltage stabilizing source fault detection method and system based on double channels Download PDFInfo
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Abstract
The invention discloses a high-power voltage stabilizing source fault detection method and system based on double channels, wherein the method comprises the following steps: acquiring first channel data of a high-power voltage stabilizing source, setting an instantaneous voltage calculation model, and calculating the instantaneous voltage of the first channel data; acquiring second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the output inductance of the high-power voltage-stabilizing source, the amplitude of the alternating current part in the output current of the high-power voltage-stabilizing source and the angular frequency of the alternating current part in the output current of the high-power voltage-stabilizing source; obtaining a fault threshold value at each time t, forming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, thereby completing the detection of the fault of the high-power voltage stabilizing source.
Description
Technical Field
The invention belongs to the technical field of high-power voltage-stabilizing source fault detection, and particularly relates to a high-power voltage-stabilizing source fault detection method and system based on double channels.
Background
High power regulated source fault detection typically requires the following steps:
confirming a fault symptom: and observing whether the voltage stabilizing source has abnormal symptoms, such as fluctuation, excessive or insufficient output voltage, abnormal output current and the like. These symptoms may indicate a malfunction of the regulated voltage source.
Checking an input power supply: and confirming whether the input power supply is normal or not, including whether the input voltage is stable or not, whether the input current meets the requirements or not, and the like. If the input power supply is abnormal, the output failure of the voltage stabilizing source can be caused.
And (3) checking an output circuit: an output circuit of the voltage stabilizing source, including an output terminal, a connection line, a load, and the like, is checked for abnormality. Possible faults include short circuits, open circuits, overload, etc.
Inspection protection device: high-power voltage-stabilizing sources are usually equipped with various protection devices, such as overvoltage protection, overcurrent protection, overtemperature protection, etc. Whether these protection devices are triggered is checked to determine whether there is a relevant failure.
Testing parameters of a stabilized voltage source: and using proper test equipment to measure parameters such as output voltage, output current, ripple and the like of the voltage stabilizing source, and comparing the parameters with equipment specifications to determine whether abnormality exists.
Check control circuit: regulated sources are typically equipped with control circuitry for controlling the output voltage to stabilize. The operating state of the control circuit, such as a feedback circuit, comparator, voltage regulator, etc., is checked to determine if a fault exists.
And (3) performing fault analysis: and analyzing possible fault reasons according to the checking result. The fault cause is found out and corresponding repair measures are taken according to experience or with the help of professionals.
However, in the prior art, no technical solution can accurately and automatically detect faults.
Disclosure of Invention
In order to solve the technical problems, the invention provides a technical scheme, wherein the instantaneous voltage of the first channel data and the instantaneous current of the second channel data are respectively calculated through the first channel data of the high-power voltage stabilizing source and the second channel data of the high-power voltage stabilizing source, and finally, faults of the high-power voltage stabilizing source are detected through a fault confirmation model.
This summary is provided to introduce a selection of representative concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used in any way that would limit the scope of the claimed subject matter.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
the invention sets an instantaneous voltage calculation model by acquiring first channel data of a high-power voltage stabilizing source, and calculates the instantaneous voltage of the first channel data, wherein the first channel data comprises: the amplitude of the input voltage of the high-power voltage stabilizing source, the phase of the input voltage of the high-power voltage stabilizing source, the complex impedance of a load, the amplitude of a load current, the phase of the load impedance, the amplitude of a feedback voltage and the phase of the feedback voltage; acquiring second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the method comprises the steps of initial output current of a high-power voltage stabilizing source, initial output voltage of the high-power voltage stabilizing source, load resistance of the high-power voltage stabilizing source, output inductance of the high-power voltage stabilizing source, amplitude of an alternating current part in the output current of the high-power voltage stabilizing source and angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source; obtaining a fault threshold value at each time t, forming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, thereby completing the detection of the fault of the high-power voltage stabilizing source. According to the technical scheme, the data of the two channels of the high-power voltage stabilizing source can be obtained, the instantaneous voltage and the instantaneous current can be calculated respectively, and finally, fault detection can be completed accurately.
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FIG. 1 is a flow chart of the method of embodiment 1 of the present invention;
fig. 2 is a block diagram of a system of embodiment 2 of the present invention.
Description of the embodiments
In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The method provided by the invention can be implemented in a terminal environment, wherein the terminal can comprise one or more of the following components: processor, storage medium, and display screen. Wherein the storage medium has stored therein at least one instruction that is loaded and executed by the processor to implement the method described in the embodiments below.
The processor may include one or more processing cores. The processor connects various parts within the overall terminal using various interfaces and lines, performs various functions of the terminal and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the storage medium, and invoking data stored in the storage medium.
The storage medium may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (ROM). The storage medium may be used to store instructions, programs, code sets, or instructions.
The display screen is used for displaying a user interface of each application program.
All subscripts in the formula of the invention are only used for distinguishing parameters and have no practical meaning.
In addition, it will be appreciated by those skilled in the art that the structure of the terminal described above is not limiting and that the terminal may include more or fewer components, or may combine certain components, or a different arrangement of components. For example, the terminal further includes components such as a radio frequency circuit, an input unit, a sensor, an audio circuit, a power supply, and the like, which are not described herein.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a method for detecting faults of a high-power voltage stabilizing source based on dual channels, including:
step 101, acquiring first channel data of a high-power voltage stabilizing source, setting an instantaneous voltage calculation model, and calculating the instantaneous voltage of the first channel data, wherein the first channel data comprises: the amplitude of the input voltage of the high-power voltage stabilizing source, the phase of the input voltage of the high-power voltage stabilizing source, the complex impedance of a load, the amplitude of a load current, the phase of the load impedance, the amplitude of a feedback voltage and the phase of the feedback voltage;
specifically, first channel data are acquired and instantaneous voltages are calculated: the method comprises the steps of acquiring the amplitude and phase of input voltage and feedback voltage of a high-power voltage stabilizing source, complex impedance of a load, amplitude and phase of load current and other information, and then calculating the instantaneous voltage at each moment by using an instantaneous voltage calculation model, wherein the instantaneous voltage model considers the complex relation among the input voltage, the load current and the feedback voltage. First, first channel data of a high-power voltage stabilizing source needs to be acquired, which includes:
amplitude of input voltage of high-power voltage stabilizing sourcePhase of input voltage of high-power stabilized source>Complex impedance of load +.>Amplitude of load current ∈ ->Phase of load current->Phase of load impedance->Amplitude of feedback voltage ∈>The phase of the feedback voltage->Then, according to the transient voltage calculation model, calculating the transient voltage +/for each time t>The instantaneous voltage calculation model is as follows:
，
specifically, the input voltage of the high-power voltage stabilizing source is formed by: first, the input voltage of a high-power regulated source can be considered to be composed of three parts:
: this is the amplitude of the input voltage multiplied by the phase angle, represented by a complex number, which represents the amplitude and phase of the input voltage.
The load voltage is constituted: considering the influence of the voltage source load, we will load the complex impedance of the voltageAdded to the input voltage, this part represents the magnitude and phase of the load voltage and takes into account the phase difference between the load current and the load impedance.
The feedback voltage is constituted: finally, we consider the effect of the feedback voltage on the total voltage, we represent the complex number of the feedback voltageThe feedback voltage is added to the sum of the two parts and is used to control and regulate the output of the high power regulated source so that it is also part of the total voltage.
Thus, the first and second substrates are bonded together,the instantaneous voltage model shows the instantaneous voltage of the high-power stabilized source at each time t by superposing three parts of input voltage, load voltage and feedback voltageThis model represents amplitude and phase by complex operations to fully describe the waveform characteristics of the voltage.
Step 102, obtaining second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the method comprises the steps of initial output current of a high-power voltage stabilizing source, initial output voltage of the high-power voltage stabilizing source, load resistance of the high-power voltage stabilizing source, output inductance of the high-power voltage stabilizing source, amplitude of an alternating current part in the output current of the high-power voltage stabilizing source and angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source;
specifically, second channel data is acquired and instantaneous current is calculated: acquiring data such as initial output current, initial output voltage, load resistance, output inductance and the like of a high-power voltage stabilizing source, calculating the instantaneous current at each moment by using an instantaneous current calculation model in combination with the instantaneous voltage of a first channel calculated before, wherein the instantaneous current model considers factors such as the initial output current, the initial output voltage, the load resistance, the output inductance, the amplitude and the angular frequency of an alternating current part and the like, and acquiring second channel data of the high-power voltage stabilizing source comprises the following steps:
initial output current of high-power voltage stabilizing sourceInitial output voltage of high-power voltage stabilizing source +.>The high-power voltage-stabilizing source comprises a load resistor R of the high-power voltage-stabilizing source, an output inductance L of the high-power voltage-stabilizing source, an amplitude K of an alternating current part in the output current of the high-power voltage-stabilizing source and an angular frequency of the alternating current part in the output current of the high-power voltage-stabilizing source>Combining the previously calculated instantaneous voltage of the first channel +.>Calculating instantaneous current +.>The instantaneous current calculation model is as follows:
，
specifically, the setting of the instantaneous current model is based on the relation between the characteristics of the circuit element and the current source and impedance, and the following is the construction process of the instantaneous current model:
1. initial output current and initial output voltage: initial output currentIs the output current value of the high-power voltage-stabilizing source at the starting time, and the initial output voltage +.>The corresponding output voltage value is the two parameters representing the operation of the high-power regulated source in the initial state.
2. Load resistance and output inductance: load resistor R and output inductanceThe high-power voltage stabilizing circuit is one of main circuit elements of a high-power voltage stabilizing source, plays an important role in a circuit, a load resistor is used for controlling the stability of output voltage, and an output inductor is used for filtering alternating current components in output current, so that the output current is more stable.
3. Instantaneous voltageIs to be added to the following: previously we have calculated the instantaneous voltage +_ for each instant t>The voltage includes the influence of the input voltage, the load voltage and the feedback voltage, and in practical situations, the instantaneous voltage will change continuously, so that the magnitude of the output current is influenced.
4. Amplitude and angular frequency of alternating current portion of output current: the output current of a high power regulated source typically comprises a dc component and an ac component. The amplitude of the ac component is represented by parameter K and the angular frequency by parameterIt is shown that these parameters are related to the waveform and frequency of the output voltage.
Thus, the instantaneous current model is developed by integrating an initial output current, an initial output voltage, a load resistance, an output inductance, and an instantaneous voltageThe factors are combined to represent the instantaneous current of the high-power stabilized source at each time t>This model is built based on the relationships among the current source, impedance, inductance, etc. circuit elements to fully describe the variation of the output current.
Step 103, obtaining each timeForming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, thereby completing the detection of the high-power voltage stabilizing source fault.
Specifically, a time-varying fault threshold function is formed: by obtaining the fault threshold at each moment, a time-varying threshold function is formed, which may vary according to the actual requirements and system characteristics, for setting the threshold of the fault confirmation model.
Setting a fault confirmation model and calculating a fault value: the fault validation model is a key component for determining whether a fault exists, and it calculates a fault value by calculating the relationship between the instantaneous voltage and the instantaneous current, and comparing with a time-varying threshold function. If the fault value exceeds the threshold function, a fault is confirmed. The failure validation model is expressed as follows:
，
wherein, the liquid crystal display device comprises a liquid crystal display device,is a function of the voltage and current, +.>Is a time-varying threshold function.
In particular, instantaneous voltageAnd instantaneous current->Is the relation of: instantaneous voltage->And instantaneous currentThe high-power voltage stabilizing source is respectively at the moment +.>The relation between these two quantities is very important for fault detection, and in normal operating conditions, the voltage and current should conform to a certain law, the fault confirmation model is defined by the function +.>It is indicated that it is made up of two subfunctions +.>And->The subtraction is performed by comparing +.>And->To determine if a fault exists.
Sub-functionsRepresenting a function of the relationship between voltage and current, which is a standard relationship between current and voltage, or a relationship obtained through simulation or experimentation, to which the voltage and current should correspond in normal operating conditions, the relationship between voltage and current may change when a fault exists,。
sub-functionsIs a time-varying threshold function that is used to represent fault thresholds at different times (t).A sinusoidal function is represented, wherein a and B are parameters that adjust the amplitude and frequency of the function, such a setting allowing the threshold to vary over time, adapting to the fault detection requirements at different points in time, where the sinusoidal function is in the form of a periodic and continuous one, thus being suitable for representing a time-varying threshold by which fault decisions in different operating states and environmental conditions can be adapted.
The fault value is calculated by combining the sub-functionsAnd->And (5) subtracting to obtain the product. If the fault value exceeds a certain threshold value, it can be judged that a fault exists.
Thus, the fault confirmation model is constructed by a function of the relationship between voltage and currentAnd a time-dependent threshold function->Comparing to determine whether the high-power voltage-stabilizing source has a fault, when the fault occurs, the relationship between the voltage and the current may deviate, resulting in +.>A function of the value of (2) and the time-dependent threshold value>There is a significant difference between the values of (c). Thus, if->The fault can be judged if the value of the (E) exceeds a certain threshold value, and the setting can be flexibly adapted to different fault conditions, and can be adjusted and optimized according to actual conditions, so that the accuracy and reliability of fault detection are improved.
Example 2
As shown in fig. 2, the embodiment of the present invention further provides a high-power voltage stabilizing source fault detection system based on dual channels, including:
the device comprises a first channel data acquisition module, a transient voltage calculation module and a second channel data acquisition module, wherein the first channel data acquisition module is used for acquiring first channel data of a high-power voltage stabilizing source, setting a transient voltage calculation model and calculating the transient voltage of the first channel data, and the first channel data comprises: the amplitude of the input voltage of the high-power voltage stabilizing source, the phase of the input voltage of the high-power voltage stabilizing source, the complex impedance of a load, the amplitude of a load current, the phase of the load impedance, the amplitude of a feedback voltage and the phase of the feedback voltage;
specifically, first channel data are acquired and instantaneous voltages are calculated: the method comprises the steps of acquiring the amplitude and phase of input voltage and feedback voltage of a high-power voltage stabilizing source, complex impedance of a load, amplitude and phase of load current and other information, and then calculating the instantaneous voltage at each moment by using an instantaneous voltage calculation model, wherein the instantaneous voltage model considers the complex relation among the input voltage, the load current and the feedback voltage. First, first channel data of a high-power voltage stabilizing source needs to be acquired, which includes:
amplitude of input voltage of high-power voltage stabilizing sourcePhase of input voltage of high-power stabilized source>Complex impedance of load +.>Amplitude of load current ∈ ->Phase of load current->Phase of load impedanceAmplitude of feedback voltage ∈>The phase of the feedback voltage->Then, according to the transient voltage calculation model, calculating the transient voltage +/for each time t>The instantaneous voltage calculation model is as follows:
，
specifically, the input voltage of the high-power voltage stabilizing source is formed by: first, the input voltage of a high-power regulated source can be considered to be composed of three parts:
: this is the amplitude of the input voltage multiplied by the phase angle, represented by a complex number, which represents the amplitude and phase of the input voltage.
The load voltage is constituted: considering the influence of the voltage source load, we will load the complex impedance of the voltageAdded to the input voltage, this part represents the magnitude and phase of the load voltage and takes into account the phase difference between the load current and the load impedance.
The feedback voltage is constituted: finally, we consider the effect of the feedback voltage on the total voltage, we represent the complex number of the feedback voltageThe feedback voltage is added to the sum of the two parts and is used to control and regulate the output of the high power regulated source so that it is also part of the total voltage.
Therefore, the instantaneous voltage model represents the instantaneous voltage of the high-power stabilized source at each time t by superposing three parts of the input voltage, the load voltage and the feedback voltageThis model represents amplitude and phase by complex operations to fully describe the waveform characteristics of the voltage.
The module for acquiring second channel data is used for acquiring second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the method comprises the steps of initial output current of a high-power voltage stabilizing source, initial output voltage of the high-power voltage stabilizing source, load resistance of the high-power voltage stabilizing source, output inductance of the high-power voltage stabilizing source, amplitude of an alternating current part in the output current of the high-power voltage stabilizing source and angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source;
specifically, second channel data is acquired and instantaneous current is calculated: acquiring data such as initial output current, initial output voltage, load resistance, output inductance and the like of a high-power voltage stabilizing source, calculating the instantaneous current at each moment by using an instantaneous current calculation model in combination with the instantaneous voltage of a first channel calculated before, wherein the instantaneous current model considers factors such as the initial output current, the initial output voltage, the load resistance, the output inductance, the amplitude and the angular frequency of an alternating current part and the like, and acquiring second channel data of the high-power voltage stabilizing source comprises the following steps:
initial output current of high-power voltage stabilizing sourceInitial output voltage of high-power voltage stabilizing source +.>The high-power voltage-stabilizing source comprises a load resistor R of the high-power voltage-stabilizing source, an output inductance L of the high-power voltage-stabilizing source, an amplitude K of an alternating current part in the output current of the high-power voltage-stabilizing source and an angular frequency of the alternating current part in the output current of the high-power voltage-stabilizing source>Combining the previously calculated instantaneous voltage of the first channel +.>Calculating instantaneous current +.>The instantaneous current calculation model is as follows:
，
specifically, the setting of the instantaneous current model is based on the relation between the characteristics of the circuit element and the current source and impedance, and the following is the construction process of the instantaneous current model:
1. initial output current and initial output voltage: initial output currentIs the output current value of the high-power voltage-stabilizing source at the starting time, and the initial output voltage +.>The corresponding output voltage value is the two parameters representing the operation of the high-power regulated source in the initial state.
2. Load resistance and output inductance: the load resistor R and the output inductor L are one of main circuit elements of the high-power voltage stabilizing source, play an important role in the circuit, the load resistor is used for controlling the stability of output voltage, and the output inductor is used for filtering alternating current components in output current, so that the output current is more stable.
3. Instantaneous voltageIs to be added to the following: previously we have calculated the instantaneous voltage +_ for each instant t>The voltage includes the influence of the input voltage, the load voltage and the feedback voltage, and in practical situations, the instantaneous voltage will change continuously, so that the magnitude of the output current is influenced.
4. Amplitude and angular frequency of alternating current portion of output current: the output current of a high power regulated source typically comprises a dc component and an ac component. The amplitude of the ac component is represented by parameter K and the angular frequency by parameterIt is shown that these parameters are related to the waveform and frequency of the output voltage.
Thus, the instantaneous current model is implemented by applying an initial output current to an initial outputVoltage, load resistance, output inductance and instantaneous voltageThe factors are combined to represent the instantaneous current of the high-power stabilized source at each time t>This model is built based on the relationships among the current source, impedance, inductance, etc. circuit elements to fully describe the variation of the output current.
The detection module is used for obtaining the fault threshold value at each time t, forming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, so as to complete the detection of the fault of the high-power voltage stabilizing source.
Specifically, a time-varying fault threshold function is formed: by obtaining the fault threshold at each moment, a time-varying threshold function is formed, which may vary according to the actual requirements and system characteristics, for setting the threshold of the fault confirmation model.
Setting a fault confirmation model and calculating a fault value: the fault validation model is a key component for determining whether a fault exists, and it calculates a fault value by calculating the relationship between the instantaneous voltage and the instantaneous current, and comparing with a time-varying threshold function. If the fault value exceeds the threshold function, a fault is confirmed. The failure validation model is expressed as follows:
，
wherein, the liquid crystal display device comprises a liquid crystal display device,is a function of the voltage and current, +.>Is a time-varying threshold function.
In particular, instantaneous voltageAnd instantaneous current->Is the relation of: instantaneous voltage->And instantaneous currentThe high-power voltage stabilizing source is respectively at the moment +.>The relation between these two quantities is very important for fault detection, and in normal operating conditions, the voltage and current should conform to a certain law, the fault confirmation model is defined by the function +.>It is indicated that it is made up of two subfunctions +.>And->The subtraction is performed by comparing +.>And->To determine if a fault exists.
Sub-functionsA relationship function between voltage and current is expressed, which is a standard relationship between current and voltage, or a relationship obtained through simulation or experiment, and in a normal operation state, voltage and current should conform to the relationship function, when a fault exists,the relationship between voltage and current may change,。
sub-functionsIs a time-varying threshold function that is used to represent fault thresholds at different times (t).A sinusoidal function is represented, wherein a and B are parameters that adjust the amplitude and frequency of the function, such a setting allowing the threshold to vary over time, adapting to the fault detection requirements at different points in time, where the sinusoidal function is in the form of a periodic and continuous one, thus being suitable for representing a time-varying threshold by which fault decisions in different operating states and environmental conditions can be adapted.
The fault value is calculated by combining the sub-functionsAnd->And (5) subtracting to obtain the product. If the fault value exceeds a certain threshold value, it can be judged that a fault exists.
Thus, the fault confirmation model is constructed by a function of the relationship between voltage and currentAnd a time-dependent threshold function->Comparing to determine whether the high-power voltage-stabilizing source has a fault, when the fault occurs, the relationship between the voltage and the current may deviate, resulting in +.>A function of the value of (2) and the time-dependent threshold value>There is a significant difference between the values of (c). Thus, if->The fault can be judged if the value of the (E) exceeds a certain threshold value, and the setting can be flexibly adapted to different fault conditions, and can be adjusted and optimized according to actual conditions, so that the accuracy and reliability of fault detection are improved.
Example 3
The embodiment of the invention also provides a storage medium which stores a plurality of instructions for realizing the high-power voltage stabilizing source fault detection method based on the double channels.
Alternatively, in this embodiment, the storage medium may be located in any one of the computer terminals in the computer terminal group in the computer network, or in any one of the mobile terminals in the mobile terminal group.
Alternatively, in the present embodiment, a storage medium is provided to store program codes for performing the steps of embodiment 1.
Example 4
The embodiment of the invention also provides electronic equipment, which comprises a processor and a storage medium connected with the processor, wherein the storage medium stores a plurality of instructions, and the instructions can be loaded and executed by the processor so that the processor can execute the high-power voltage stabilizing source fault detection method based on the double channels.
Specifically, the electronic device of the present embodiment may be a computer terminal, and the computer terminal may include: one or more processors, and a storage medium.
The storage medium can be used for storing software programs and modules, such as a high-power voltage stabilizing source fault detection method based on double channels in the embodiment of the invention, corresponding program instructions/modules, and the processor executes various functional applications and data processing by running the software programs and modules stored in the storage medium, namely the high-power voltage stabilizing source fault detection method based on double channels is realized. The storage medium may include a high-speed random access storage medium, and may also include a non-volatile storage medium, such as one or more magnetic storage systems, flash memory, or other non-volatile solid-state storage medium. In some examples, the storage medium may further include a storage medium remotely located with respect to the processor, and the remote storage medium may be connected to the terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The processor may invoke the information stored in the storage medium and the application program through the transmission system to perform the steps of embodiment 1.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed technology may be implemented in other manners. The system embodiments described above are merely exemplary, and for example, the division of the units is merely a logic function division, and there may be another division manner in actual implementation, for example, 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 through some interfaces, units or modules, or may be in electrical or other forms.
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 partly in the form of a software product or all or part of the technical solution, which is stored in a storage medium, and includes several 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 Read-Only Memory (ROM), a random-access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or the like, which can store program codes.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (2)
1. The high-power voltage stabilizing source fault detection method based on the double channels is characterized by comprising the following steps of:
acquiring first channel data of a high-power voltage stabilizing source, setting an instantaneous voltage calculation model, and calculating the instantaneous voltage of the first channel data, wherein the first channel data comprises: the method comprises the steps of enabling the amplitude of the input voltage of a high-power voltage stabilizing source, the phase of the input voltage of the high-power voltage stabilizing source, the complex impedance of a load, the amplitude of load current, the phase of load impedance, the amplitude of feedback voltage and the phase of feedback voltage, wherein the instantaneous voltage calculation model is as follows:
wherein V (t) is the instantaneous voltage at time t, A in For the magnitude of the input voltage of the high-power regulated source,input voltage phase Z of high-power stabilized source load Is the complex impedance of the load, |I load (t) | is the magnitude of the load current at time t, +.>For the phase of the load current +.>For the phase of the load impedance, A fb For the magnitude of the feedback voltage +.>For the phase of the feedback voltage, j is the imaginary unit, which is used in complex operation to represent the angular offset +.>Is a phase of (2);
acquiring second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the method comprises the steps of initial output current of a high-power voltage stabilizing source, initial output voltage of the high-power voltage stabilizing source, load resistance of the high-power voltage stabilizing source, output inductance of the high-power voltage stabilizing source, amplitude of an alternating current part in the output current of the high-power voltage stabilizing source and angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source, wherein the instantaneous current calculation model is as follows:
wherein I (t) is the instantaneous current at time t, I 0 Is the initial output current of the high-power voltage stabilizing source, V 0 The high-power voltage stabilizing source is characterized in that the high-power voltage stabilizing source is an initial output voltage, R is a load resistor of the high-power voltage stabilizing source, L is an output inductance of the high-power voltage stabilizing source, K is the amplitude of an alternating current part in the output current of the high-power voltage stabilizing source, and omega is the angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source;
obtaining a fault threshold value at each time t, forming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, thereby completing the detection of the fault of the high-power voltage-stabilizing source, wherein the fault confirmation model is as follows:
f(V(t)，I(t))＝g(V(t)，I(t))-h(t)
wherein g (V (t), I (t)) is a voltage and current relationship function, h (t) is a time-varying threshold function;
g(V(t)，I(t))＝V(t) 2 +I(t) 2
h(t)＝A*sin(B*t)
wherein A is a parameter for adjusting the amplitude of the function, and B is a parameter for adjusting the frequency of the function.
2. The utility model provides a high-power steady voltage source fault detection system based on binary channels which characterized in that includes:
the device comprises a first channel data acquisition module, a transient voltage calculation module and a second channel data acquisition module, wherein the first channel data acquisition module is used for acquiring first channel data of a high-power voltage stabilizing source, setting a transient voltage calculation model and calculating the transient voltage of the first channel data, and the first channel data comprises: the method comprises the steps of enabling the amplitude of the input voltage of a high-power voltage stabilizing source, the phase of the input voltage of the high-power voltage stabilizing source, the complex impedance of a load, the amplitude of load current, the phase of load impedance, the amplitude of feedback voltage and the phase of feedback voltage, wherein the instantaneous voltage calculation model is as follows:
wherein V (t) is the instantaneous voltage at time t, A in For the magnitude of the input voltage of the high-power regulated source,input voltage phase Z of high-power stabilized source load Is the complex impedance of the load, |I load (t) | is the magnitude of the load current at time t, +.>For the phase of the load current +.>For the phase of the load impedance, A fb For the magnitude of the feedback voltage +.>For the phase of the feedback voltage, j is the imaginary unit, which is used in complex operation to represent the angular offset +.>Is a phase of (2);
the module for acquiring second channel data is used for acquiring second channel data of a high-power voltage stabilizing source, setting an instantaneous current calculation model, and calculating the instantaneous current of the second channel data by combining the instantaneous voltage of the first channel data, wherein the second channel data comprises: the method comprises the steps of initial output current of a high-power voltage stabilizing source, initial output voltage of the high-power voltage stabilizing source, load resistance of the high-power voltage stabilizing source, output inductance of the high-power voltage stabilizing source, amplitude of an alternating current part in the output current of the high-power voltage stabilizing source and angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source, wherein the instantaneous current calculation model is as follows:
wherein I (t) is the instantaneous current at time t, I 0 Is the initial output current of the high-power voltage stabilizing source, V 0 The high-power voltage stabilizing source is characterized in that the high-power voltage stabilizing source is an initial output voltage, R is a load resistor of the high-power voltage stabilizing source, L is an output inductance of the high-power voltage stabilizing source, K is the amplitude of an alternating current part in the output current of the high-power voltage stabilizing source, and omega is the angular frequency of the alternating current part in the output current of the high-power voltage stabilizing source;
the detection module is used for obtaining a fault threshold value at each time t, forming a time-varying threshold function, setting a fault confirmation model, and calculating a fault value according to the instantaneous voltage of the first channel data, the instantaneous current of the second channel data and the time-varying threshold function, so as to complete the detection of the fault of the high-power voltage-stabilizing source, wherein the fault confirmation model is as follows:
f(V(t)，I(t))＝g(V(t)，I(t))-h(t)
wherein g (V (t), I (t)) is a voltage and current relationship function, h (t) is a time-varying threshold function;
g(V(t)，I(t))＝V(t) 2 +I(t) 2
h(t)＝A*sin(B*t)
wherein A is a parameter for adjusting the amplitude of the function, and B is a parameter for adjusting the frequency of the function.
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