CN116930596A - Fan current detection control method and system - Google Patents
Fan current detection control method and system Download PDFInfo
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- CN116930596A CN116930596A CN202311208707.7A CN202311208707A CN116930596A CN 116930596 A CN116930596 A CN 116930596A CN 202311208707 A CN202311208707 A CN 202311208707A CN 116930596 A CN116930596 A CN 116930596A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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Abstract
The application discloses a fan current detection control method and a system, comprising the following steps: the system comprises an operation stage dividing module, a current detection module, a current safety analysis module at each stage, a comprehensive current safety coefficient analysis module and a database, wherein the operation stage dividing module is used for dividing the operation process of a target fan, monitoring the current change condition of each operation sub-stage in the operation process of the fan in real time, uploading the current change condition to a control system, and obtaining the current safety condition of each operation sub-stage in the operation process of the fan through the detailed analysis of the control system.
Description
Technical Field
The application relates to the field of current detection, in particular to a fan current detection control method and system.
Background
Wind energy is one of the most promising renewable energy sources, and a fan is used as core equipment for wind energy utilization, so that the fan is one of important components of the wind energy industry, the fan industry has been rapidly developed in the past few years, and the current detection for the fan in operation has the following defects;
the existing method for detecting the fan current basically detects and judges the fan current through a plurality of years of working experience by technicians, and can not accurately judge the current safety of the fan in different operation stages due to the variation of the fan current, so that the probability of the fan failure is increased; in the prior art, in the process of detecting the current of the fan, the current change in the operation of the fan is not detected in real time, so that the time-efficiency performance is realized on the current safety result of the fan, and meanwhile, the current detection of each stage of the target fan is incomplete, so that the current safety detection result of the fan has one-sided performance, the operation safety of the fan is further reduced, and the production accident can be caused under serious conditions.
Disclosure of Invention
The application aims to provide a fan current detection control method and system, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions: a fan current detection control system, comprising;
an operation phase dividing module; the method is used for dividing the operation process of the target fan according to different stages in the operation process of the target fan and obtaining each operation sub-stage in the target fan;
a current detection module; the real-time current detection device is used for detecting the real-time current of each operation sub-stage in the target fan to obtain the real-time current of each operation sub-stage in the target fan;
the current safety analysis module is used for analyzing the current safety of each stage; the current safety coefficient of each operation sub-stage in the target fan is analyzed according to the real-time current of each operation sub-stage in the target fan;
the comprehensive current safety coefficient analysis module; the comprehensive current safety coefficient of the target fan is analyzed according to the current safety coefficients of all operation sub-stages in the target fan;
a database; the method is used for storing a standard current and running time relation diagram corresponding to each starting-stage current peak value and each starting-stage current peak value of a target fan under different powers, storing a standard current and running time relation diagram corresponding to each peak value and each power corresponding transition stage in the running process of the target fan, and standard transition time, standard maximum value quantity, standard minimum value quantity and standard inflection point quantity in the standard current and running time relation diagram corresponding to each peak value and each power corresponding transition stage in the running process of the target fan, storing a standard current and running time relation diagram corresponding to each power stable running stage standard current and running time relation diagram of the target fan, storing a standard current and running time relation diagram corresponding to each power closing stage of the target fan, and screening the standard current and running time relation diagram corresponding to the closing stage of the target fan according to the power of the target fan.
In a preferred embodiment of the present application, the specific analysis process of the current detection module is as follows:
real-time current of each operation sub-stage in the operation process of the target fan is measured in real time through a clamp ammeter preset in the target motor;
and establishing a plane rectangular coordinate system of each operation sub-stage current and operation time in the operation process of the target fan by taking the operation time (ms) as a horizontal axis (X axis) and the current (mA) as a vertical axis (Y axis), and obtaining a corresponding relation coordinate graph between each operation sub-stage current and operation time in the operation process of the target fan, which is called as a relation graph of each operation sub-stage current and operation time.
In a preferred scheme of the application, the specific analysis process of the current safety coefficient in the starting stage in the current safety analysis module in each stage is as follows:
establishing a data extraction relation between the current safety analysis module of each stage and a database, and extracting standard current peaks of each starting stage and standard current peak corresponding standard current and running time relation diagrams of each starting stage, which are stored in the data, of a target fan started under each power;
analyzing and obtaining a current peak value of a starting stage in the running process of the target fan through a relation chart of the current of the starting stage in the running process of the target fan and a relation chart of the standard current of the starting stage of the peak value in the running process of the target fan and the running time;
dividing the running time of a starting stage in the running process of a target fan according to preset time intervals to obtain time interval points, numbering the obtained time interval points into 1,2 according to time sequences, and reading information of the time interval pointsI is expressed as the number of each time interval point of the starting stage in the running process of the target fan, and standard information +.>；
Standard information of each time interval point of the peak starting stage in the running process of the target fanAnd information about each time interval point of the peak start phase during the operation of the target fan +.>Substitution formulaObtaining a current safety coefficient of a starting stage in the running process of the target fan>Wherein->Represented as a preset start-up phase current influencing factor.
Comparing and analyzing the current safety coefficient of the starting stage in the running process of the target fan with the standard current safety coefficient of the starting stage in the running process of the preset target fan, if the current safety coefficient of the starting stage in the running process of the target fan is smaller than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then running current of the starting stage in the running process of the fan is safe, and if the current safety coefficient of the starting stage in the running process of the target fan is larger than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then sending an early warning instruction to a control system.
In a preferred scheme of the application, the specific analysis process of the transition phase current safety coefficient in the current safety analysis module of each phase is as follows:
extracting a standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan and standard transition time, standard maximum value quantity, standard minimum value quantity and standard inflection point quantity in the standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan, which are stored in a database;
screening and obtaining a standard current and running time relation diagram of a transition stage in the running process of the target fan and standard transition time in the standard current and running time relation diagram according to the starting power and peak value of the target fanStandard maximum number->Standard minimum quantity->And the number of standard inflection points>；
Analyzing a relation diagram of current and operation time of a transition stage in the operation process of the target fan to obtain the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan, and marking the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan as t, m, n, g respectively.
Running the target fan throughStandard transition time in standard current versus run time graph for transition phase in processStandard maximum number->Standard minimum quantity->Number of standard inflection points->And the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the running process of the target fan are brought into a formula:
obtaining a current safety coefficient of a transitional stage in the operation process of the target fan>Wherein->Expressed as a preset transition phase runtime influence factor,/->Expressed as a predetermined transition phase current change degree influencing factor +.>Represented as a preset transition phase current influencing factor.
Comparing and analyzing the current safety coefficient of the transition stage in the running process of the target fan with the standard current safety coefficient of the transition stage in the running process of the preset target fan, if the current safety coefficient of the transition stage in the running process of the target fan is smaller than the standard current safety coefficient of the transition stage in the running process of the preset target fan, indicating the current safety of the transition stage in the running process of the target fan, and if the current safety coefficient of the transition stage in the running process of the target fan is larger than the standard current safety coefficient of the transition stage in the running process of the preset target fan, sending an early warning instruction to the control system.
In the preferred scheme of the application, the specific analysis process of the current safety in the steady operation stage in the current safety analysis module in each stage is as follows:
extracting a current and running time relation diagram of a standard of each power stable running stage of the target fan and a stable running current value corresponding to the current and running time relation diagram of the standard of each power stable running stage of the target fan stored in a database;
screening a current-to-running time relation diagram of a standard of a stable running stage of the target fan and a stable running current value of the standard of the stable running stage of the target fan according to the running power of the target fanObtaining a steady operation current value of a steady operation stage of the target fan according to a relation diagram of current of an operation sub-stage and operation time in the operation process of the target fan>；
Calculating a stationary operation current value for obtaining a stationary operation stage standard of the target fanAnd a steady operation current valueDifference between->The steady current difference is recorded;
comparing and analyzing the stable current difference of the stable running stage of the target fan with the standard stable current difference of the preset stable running stage of the target fan, if the stable current difference of the stable running stage of the target fan is smaller than the standard stable current difference of the preset stable running stage of the target fan, ensuring the current safety of the stable running stage of the target fan, and if the stable current difference of the stable running stage of the target fan is larger than the standard stable current difference of the preset stable running stage of the target fan, sending an early warning instruction to the control system.
In a preferred scheme of the application, the specific analysis process of the current safety coefficient in the closing stage in the current safety analysis module in each stage is as follows:
extracting a standard current and operation time relation diagram of each power closing stage corresponding to the target fan stored in the database, screening the standard current and operation time relation diagram of the closing stage corresponding to the target fan according to the power of the target fan, and analyzing the standard current and operation time relation diagram to obtain the standard current rising time of the closing stagePeak value of standard current rise->And the time when the standard current drops to zero；
Analyzing a relation diagram of current and operation time in a closing stage in the operation process of the target fan to obtain
Current rise time during shutdown phase of target fan operationPeak value of current rise->And the time when the current drops to zero +.>；
Current rise time of closing stage in operation process of target fanPeak value of current rise->Time when current drops to zero +.>And standard current rise time of the off phase +.>Peak value of standard current rise->Time when standard current drops to zero +.>Carry formula->Obtaining the current safety coefficient of the closing stage in the running process of the target fan>Wherein->The current influence factor is expressed as a preset closing phase;
comparing and analyzing the current safety coefficient of the closing stage in the running process of the target fan with the current safety coefficient of the standard closing stage in the running process of the preset target fan, if the current safety coefficient of the closing stage in the running process of the target fan is smaller than the current safety coefficient of the standard closing stage in the running process of the preset target fan, indicating the current safety of the closing stage in the running process of the target fan, and if the current safety coefficient of the closing stage in the running process of the target fan is larger than the current safety coefficient of the standard closing stage in the running process of the preset target fan, sending an early warning instruction to the control system.
In a preferred scheme of the application, the specific analysis process of the comprehensive current safety coefficient analysis module is as follows:
current safety coefficient of starting stage in operation process of target fanTransitional stage in operation process of target fanCurrent safety factor->Smooth current difference in smooth operation stage of target fan operation>And the current safety factor in the closing stage of the target fan in the operation process>Carry formula->Obtaining the comprehensive current safety coefficient in the operation process of the target fan>Wherein->Expressed as a preset current safety correction factor of each stage, < >>Expressed as a preset integrated current safety influencing factor, < >>The current safety weight is expressed as a preset current safety weight;
comparing and analyzing the comprehensive current safety coefficient in the operation process of the target fan with the standard comprehensive current safety coefficient in the operation process of the preset target fan, if the comprehensive current safety coefficient in the operation process of the target fan is smaller than the standard comprehensive current safety coefficient in the operation process of the preset target fan, indicating the current safety in the operation process of the target fan, and if the comprehensive current safety coefficient in the operation process of the target fan is larger than the standard comprehensive current safety coefficient in the operation process of the preset target fan, sending an early warning instruction to the control system.
In order to achieve the above purpose, the present application further provides the following technical solutions: a fan current detection control method comprises the following steps:
acquiring a relation diagram of current and operation time of each operation sub-stage in the operation process of the target fan;
extracting a standard current and operation time relation diagram of each operation sub-stage stored in a database according to the starting power and the starting peak value of the target fan;
analyzing the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan according to the current and operation time relation diagram and the standard current and operation time relation diagram of each operation sub-stage in the operation process of the target fan;
analyzing the comprehensive current safety coefficient in the operation process of the target fan according to the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan;
the comprehensive current safety coefficient in the operation process of the target fan is compared and analyzed with the standard comprehensive current safety coefficient in the operation process of the target fan, and intelligent adjustment is performed according to the analysis result.
Compared with the prior art, the application has the beneficial effects that:
according to the application, the operation process of the target fan is divided, the current change condition of each operation sub-stage in the operation process of the fan is monitored in real time through the preset detection device, and then the current change condition is uploaded to the control system in real time, the current safety condition of each operation sub-stage in the operation process of the fan is obtained through the analysis of the system, the accuracy of current safety judgment of different operation stages of the fan is improved, the problem of timeliness in detection in the prior art is solved, meanwhile, the problem of incomplete detection in the current safety detection process of the target fan is avoided through the division of the operation stages of the target fan, the potential safety hazard caused by missing detection is effectively solved, the operation safety of the fan is further improved, and the normal operation of the fan is ensured.
Drawings
The application will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the application, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a schematic diagram of the module connection of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, the present application provides a technical solution: a fan current detection control system comprises an operation phase dividing module, a current detection module, a current safety analysis module of each phase, a comprehensive current safety coefficient analysis module and a database.
The operation phase dividing module is connected with the current detection module, the current detection module is connected with the current safety analysis modules of all phases, and the current safety analysis modules of all phases are connected with the comprehensive current safety coefficient analysis module and the database.
The operation phase dividing module is used for dividing the operation process of the target fan according to different phases in the operation process of the target fan and obtaining each operation sub-phase in the target fan;
further, the specific analysis process of the operation phase dividing module is as follows:
dividing the operation process of the target fan according to different stages in the operation process of the target fan to obtain each operation sub-stage in the operation process of the target fan, wherein each operation sub-stage is respectively a starting stage, a transition stage, a stable operation stage and a shutdown stage.
It should be noted that; the mid-transition phase refers to the change in current from the peak start-up phase to the steady-state phase.
The current detection module is used for detecting the real-time current of each operation sub-stage in the target fan to obtain the real-time current of each operation sub-stage in the target fan;
further, the specific real-time manner of the current detection module is as follows:
real-time current of each operation sub-stage in the operation process of the target fan is measured in real time through a clamp ammeter preset in the target motor;
and establishing a plane rectangular coordinate system of each operation sub-stage current and operation time in the operation process of the target fan by taking the operation time (ms) as a horizontal axis (X axis) and the current (mA) as a vertical axis (Y axis), and obtaining a corresponding relation coordinate graph between each operation sub-stage current and operation time in the operation process of the target fan, which is called as a relation graph of each operation sub-stage current and operation time.
The current safety analysis module of each stage is used for analyzing the current safety coefficient of each operation sub-stage in the target fan according to the real-time current of each operation sub-stage in the target fan;
further, the specific analysis process of the current safety coefficient in the starting stage in the current safety analysis module in each stage is as follows:
establishing a data extraction relation between the current safety analysis module of each stage and a database, and extracting standard current peaks of each starting stage and standard current peak corresponding standard current and running time relation diagrams of each starting stage, which are stored in the data, of a target fan started under each power;
analyzing and obtaining a current peak value of a starting stage in the running process of the target fan through a relation chart of the current of the starting stage in the running process of the target fan and a relation chart of the standard current of the starting stage of the peak value in the running process of the target fan and the running time;
dividing the running time of a starting stage in the running process of a target fan according to preset time intervals to obtain time interval points, numbering the obtained time interval points into 1,2 according to time sequences, and reading information of the time interval pointsI is expressed as the number of each time interval point of the starting stage in the operation process of the target fan, and the operation of the target fan is obtained from the relationship diagram of the standard current and the operation time of the starting stage in the operation process of the target fanStandard information for the time intervals of the start-up phase in the course of a line +.>；
Standard information of each time interval point of the peak starting stage in the running process of the target fanAnd information about each time interval point of the peak start phase during the operation of the target fan +.>Substitution formulaObtaining a current safety coefficient of a starting stage in the running process of the target fan>Wherein->The current influence factor is expressed as a preset starting stage;
the smaller the difference value of each time interval point of the starting stage of the target fan is, the current safety coefficient of the starting stage of the target fan in the running processThe smaller the current is, the safer the current at the starting stage in the running process of the target fan is;
comparing and analyzing the current safety coefficient of the starting stage in the running process of the target fan with the standard current safety coefficient of the starting stage in the running process of the preset target fan, if the current safety coefficient of the starting stage in the running process of the target fan is smaller than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then running current of the starting stage in the running process of the fan is safe, and if the current safety coefficient of the starting stage in the running process of the target fan is larger than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then sending an early warning instruction to a control system.
Further, the specific analysis process of the transition phase current safety coefficient in the current safety analysis module of each phase is as follows:
extracting a standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan and standard transition time, standard maximum value quantity, standard minimum value quantity and standard inflection point quantity in the standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan, which are stored in a database;
screening and obtaining a standard current and running time relation diagram of a transition stage in the running process of the target fan and standard transition time in the standard current and running time relation diagram according to the starting power and peak value of the target fanStandard maximum number->Standard minimum quantity->And the number of standard inflection points>；
Analyzing a relation diagram of current and operation time of a transition stage in the operation process of the target fan to obtain the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan, and marking the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan as t, m, n, g respectively.
Standard transition time in standard current and operation time relation diagram of transition stage in operation process of target fanStandard maximum number->Standard minimum quantity->Number of standard inflection points->And the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the running process of the target fan are brought into a formula:
obtaining a current safety coefficient of a transitional stage in the operation process of the target fan>Wherein->Expressed as a preset transition phase runtime influence factor,/->Shown as a preset transition phase current variation degree influencing factor,/->The current influence factor is expressed as a preset transition phase;
in the formula, when the difference value between the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the running process of the target fan and the corresponding standard transition time, the standard maximum value quantity, the standard minimum value quantity and the standard inflection point quantity is smaller, the current safety coefficient of the transition stage in the running process of the target fan indicates that the current of the transition stage in the running process of the target fan is safer;
the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the running process of the target fan are not mutually influenced;
comparing and analyzing the current safety coefficient of the transition stage in the running process of the target fan with the standard current safety coefficient of the transition stage in the running process of the preset target fan, if the current safety coefficient of the transition stage in the running process of the target fan is smaller than the standard current safety coefficient of the transition stage in the running process of the preset target fan, indicating the current safety of the transition stage in the running process of the target fan, and if the current safety coefficient of the transition stage in the running process of the target fan is larger than the standard current safety coefficient of the transition stage in the running process of the preset target fan, sending an early warning instruction to the control system.
Further, the specific analysis process of the current safety in the steady operation stage in the current safety analysis module in each stage is as follows:
extracting a current and running time relation diagram of a standard of each power stable running stage of the target fan and a stable running current value corresponding to the current and running time relation diagram of the standard of each power stable running stage of the target fan stored in a database;
screening a current-to-running time relation diagram of a standard of a stable running stage of the target fan and a stable running current value of the standard of the stable running stage of the target fan according to the running power of the target fanObtaining a steady operation current value of a steady operation stage of the target fan according to a relation diagram of current of an operation sub-stage and operation time in the operation process of the target fan>；
Calculating a stationary operation current value for obtaining a stationary operation stage standard of the target fanAnd a steady operation current valueDifference between->The steady current difference is recorded;
comparing and analyzing the stable current difference of the stable running stage of the target fan with the standard stable current difference of the preset stable running stage of the target fan, if the stable current difference of the stable running stage of the target fan is smaller than the standard stable current difference of the preset stable running stage of the target fan, ensuring the current safety of the stable running stage of the target fan, and if the stable current difference of the stable running stage of the target fan is larger than the standard stable current difference of the preset stable running stage of the target fan, sending an early warning instruction to the control system.
Further, the specific analysis process of the current safety coefficient in the closing stage in the current safety analysis module in each stage is as follows:
extracting a standard current and operation time relation diagram of each power closing stage corresponding to the target fan stored in the database, screening the standard current and operation time relation diagram of the closing stage corresponding to the target fan according to the power of the target fan, and analyzing the standard current and operation time relation diagram to obtain the standard current rising time of the closing stagePeak value of standard current rise->And the time when the standard current drops to zero；
Analyzing a relation diagram of current and operation time in a closing stage in the operation process of the target fan to obtain
Current rise time during shutdown phase of target fan operationPeak value of current rise->And the time when the current drops to zero +.>；
Current rise time of closing stage in operation process of target fanPeak value of current rise->Time when current drops to zero +.>And standard current rise time of the off phase +.>Peak value of standard current rise->Time when standard current drops to zero +.>Carry formula->Obtaining the current safety coefficient of the closing stage in the running process of the target fan>Wherein->The current influence factor is expressed as a preset closing phase;
wherein when the difference between the average rising rate and the average falling rate of the current and the standard average rising rate and the average falling rate is smaller, and the difference between the current rising peak value and the current rising standard peak value is smaller, the current safety coefficient of the closing stage in the running process of the target fanThe smaller the current is, the safer the current is in the closing stage in the running process of the target fan is;
the current rising time, the current rising peak value and the time when the current falls to zero in the closing stage of the target fan in the running process are not mutually influenced;
comparing and analyzing the current safety coefficient of the closing stage in the running process of the target fan with the current safety coefficient of the standard closing stage in the running process of the preset target fan, if the current safety coefficient of the closing stage in the running process of the target fan is smaller than the current safety coefficient of the standard closing stage in the running process of the preset target fan, indicating the current safety of the closing stage in the running process of the target fan, and if the current safety coefficient of the closing stage in the running process of the target fan is larger than the current safety coefficient of the standard closing stage in the running process of the preset target fan, sending an early warning instruction to the control system.
The comprehensive current safety coefficient analysis module; the comprehensive current safety coefficient of the target fan is analyzed according to the current safety coefficients of all operation sub-stages in the target fan;
further, the specific analysis process of the comprehensive current safety coefficient analysis module is as follows:
current safety coefficient of starting stage in operation process of target fanCurrent safety factor of transition stage in operation process of target fan>Smooth current difference in smooth operation stage of target fan operation>And the current safety factor in the closing stage of the target fan in the operation process>Carry formula->Obtaining the comprehensive current safety coefficient in the operation process of the target fan>Wherein->Expressed as a preset current safety correction factor of each stage, < >>Expressed as a preset integrated current safety influencing factor, < >>The current safety weight is expressed as a preset current safety weight;
the current safety coefficient of a starting stage in the running process of the target fan is the current safety coefficient of a transition stage in the running process of the target fan, the smaller the entropy of the current safety coefficient of a stable running stage in the running process of the target fan and a closing stage in the running process of the target fan is, the smaller the comprehensive current safety coefficient in the running process of the target fan is, and the safer the comprehensive current in the running process of the target fan is;
the current safety coefficient of the starting stage in the running process of the target fan in the formula, the current safety coefficient of the transition stage in the running process of the target fan, the stable current difference of the stable running stage in the running process of the target fan and the current safety coefficient of the closing stage in the running process of the target fan are not affected mutually;
comparing and analyzing the comprehensive current safety coefficient in the operation process of the target fan with the standard comprehensive current safety coefficient in the operation process of the preset target fan, if the comprehensive current safety coefficient in the operation process of the target fan is smaller than the standard comprehensive current safety coefficient in the operation process of the preset target fan, indicating the current safety in the operation process of the target fan, and if the comprehensive current safety coefficient in the operation process of the target fan is larger than the standard comprehensive current safety coefficient in the operation process of the preset target fan, sending an early warning instruction to the control system.
The application also provides the following technical scheme: the fan current detection control method is characterized by comprising the following steps of:
acquiring a relation diagram of current and operation time of each operation sub-stage in the operation process of the target fan;
extracting a standard current and operation time relation diagram of each operation sub-stage stored in a database according to the starting power and the starting peak value of the target fan;
analyzing the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan according to the current and operation time relation diagram and the standard current and operation time relation diagram of each operation sub-stage in the operation process of the target fan;
analyzing the comprehensive current safety coefficient in the operation process of the target fan according to the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan;
the comprehensive current safety coefficient in the operation process of the target fan is compared and analyzed with the standard comprehensive current safety coefficient in the operation process of the target fan, and intelligent adjustment is performed according to the analysis result.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A fan current detection control system, comprising:
an operation phase dividing module; the method is used for dividing the operation process of the target fan according to different stages in the operation process of the target fan and obtaining each operation sub-stage in the target fan;
a current detection module; the real-time current detection device is used for detecting the real-time current of each operation sub-stage in the target fan to obtain the real-time current of each operation sub-stage in the target fan;
the current safety analysis module is used for analyzing the current safety of each stage; the current safety coefficient of each operation sub-stage in the target fan is analyzed according to the real-time current of each operation sub-stage in the target fan;
the comprehensive current safety coefficient analysis module; the comprehensive current safety coefficient of the target fan is analyzed according to the current safety coefficients of all operation sub-stages in the target fan;
a database; the method is used for storing a standard current and running time relation diagram corresponding to each starting-stage current peak value and each starting-stage current peak value of a target fan under different powers, storing a standard current and running time relation diagram corresponding to each peak value and each power corresponding transition stage in the running process of the target fan, and standard transition time, standard maximum value quantity, standard minimum value quantity and standard inflection point quantity in the standard current and running time relation diagram corresponding to each peak value and each power corresponding transition stage in the running process of the target fan, storing a standard current and running time relation diagram corresponding to each power stable running stage standard current and running time relation diagram of the target fan, storing a standard current and running time relation diagram corresponding to each power closing stage of the target fan, and screening the standard current and running time relation diagram corresponding to the closing stage of the target fan according to the power of the target fan.
2. The fan current detection control system according to claim 1, wherein: the specific analysis process of the operation phase division module is as follows:
dividing the operation process of the target fan according to different stages in the operation process of the target fan to obtain each operation sub-stage in the operation process of the target fan, wherein each operation sub-stage is respectively a starting stage, a transition stage, a stable operation stage and a shutdown stage.
3. The fan current detection control system according to claim 1, wherein: the specific analysis process of the current detection module is as follows:
real-time current of each operation sub-stage in the operation process of the target fan is measured in real time through a clamp ammeter preset in the target motor;
and establishing a plane rectangular coordinate system of each operation sub-stage current and operation time in the operation process of the target fan by taking the operation time (ms) as a horizontal axis (X axis) and the current (mA) as a vertical axis (Y axis), and obtaining a corresponding relation coordinate graph between each operation sub-stage current and operation time in the operation process of the target fan, which is called as a relation graph of each operation sub-stage current and operation time.
4. The fan current detection control system according to claim 1, wherein: the specific analysis process of the current safety coefficient in the starting stage in the current safety analysis module in each stage is as follows:
establishing a data extraction relation between the current safety analysis module of each stage and a database, and extracting standard current peaks of each starting stage and standard current peak corresponding standard current and running time relation diagrams of each starting stage, which are stored in the data, of a target fan started under each power;
analyzing and obtaining a current peak value of a starting stage in the running process of the target fan through a relation chart of the current of the starting stage in the running process of the target fan and a relation chart of the standard current of the starting stage of the peak value in the running process of the target fan and the running time;
dividing the running time of a starting stage in the running process of a target fan according to preset time intervals to obtain time interval points, numbering the obtained time interval points into 1,2 according to time sequences, and reading information of the time interval pointsI is expressed as the number of each time interval point of the starting stage in the running process of the target fan, and standard information +.>；
Standard information of each time interval point of the peak starting stage in the running process of the target fanAnd information about each time interval point of the peak start phase during the operation of the target fan +.>Substitution formula->Obtaining a current safety coefficient of a starting stage in the running process of the target fan>Wherein->The current influence factor is expressed as a preset starting stage;
comparing and analyzing the current safety coefficient of the starting stage in the running process of the target fan with the standard current safety coefficient of the starting stage in the running process of the preset target fan, if the current safety coefficient of the starting stage in the running process of the target fan is smaller than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then running current of the starting stage in the running process of the fan is safe, and if the current safety coefficient of the starting stage in the running process of the target fan is larger than the standard current safety coefficient of the starting stage in the running process of the preset target fan, then sending an early warning instruction to a control system.
5. The fan current detection control system according to claim 1, wherein: the specific analysis process of the transition phase current safety coefficient in the current safety analysis module of each phase is as follows:
extracting a standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan and standard transition time, standard maximum value quantity, standard minimum value quantity and standard inflection point quantity in the standard current and running time relation diagram of each peak value and each power corresponding transition stage in the running process of the target fan, which are stored in a database;
screening and obtaining a standard current and operation time relation diagram of a transition stage in the operation process of the target fan and a standard in the standard current and operation time relation diagram according to the starting power and the peak value of the target fanQuasi transition timeStandard maximum number->Standard minimum quantity->And the number of standard inflection points>；
Analyzing a relation diagram of current and operation time of a transition stage in the operation process of the target fan to obtain the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan, and marking the transition time, the maximum value quantity, the minimum value quantity and the inflection point quantity of the transition stage in the operation process of the target fan as t, m, n, g respectively;
standard transition time in standard current and operation time relation diagram of transition stage in operation process of target fanStandard maximum number->Standard minimum quantity->Number of standard inflection points->And transition time, maximum number, minimum number, and turning of transition stage in the operation process of the target fan
The number of points is brought into the formula:，
obtaining the current safety coefficient of the transition stage in the operation process of the target fanWherein->Expressed as a preset transition phase runtime influence factor,/->Expressed as a predetermined transition phase current change degree influencing factor +.>The current influence factor is expressed as a preset transition phase;
comparing and analyzing the current safety coefficient of the transition stage in the running process of the target fan with the standard current safety coefficient of the transition stage in the running process of the preset target fan, if the current safety coefficient of the transition stage in the running process of the target fan is smaller than the standard current safety coefficient of the transition stage in the running process of the preset target fan, indicating the current safety of the transition stage in the running process of the target fan, and if the current safety coefficient of the transition stage in the running process of the target fan is larger than the standard current safety coefficient of the transition stage in the running process of the preset target fan, sending an early warning instruction to the control system.
6. The fan current detection control system according to claim 1, wherein: the specific analysis process of the current safety in the steady operation stage in the current safety analysis module in each stage is as follows:
extracting a current and running time relation diagram of a standard of each power stable running stage of the target fan and a stable running current value corresponding to the current and running time relation diagram of the standard of each power stable running stage of the target fan stored in a database;
screening standard current and operation of a stable operation stage of the target fan according to the operation power of the target fanTime relation diagram and standard steady operation current value of steady operation stage of target fanObtaining a steady operation current value of a steady operation stage of the target fan according to a relation diagram of current of an operation sub-stage and operation time in the operation process of the target fan>；
Calculating a stationary operation current value for obtaining a stationary operation stage standard of the target fanAnd a steady operation current value +.>Difference between->The steady current difference is recorded;
comparing and analyzing the stable current difference of the stable running stage of the target fan with the standard stable current difference of the preset stable running stage of the target fan, if the stable current difference of the stable running stage of the target fan is smaller than the standard stable current difference of the preset stable running stage of the target fan, ensuring the current safety of the stable running stage of the target fan, and if the stable current difference of the stable running stage of the target fan is larger than the standard stable current difference of the preset stable running stage of the target fan, sending an early warning instruction to the control system.
7. The fan current detection control system according to claim 1, wherein: the specific analysis process of the current safety coefficient of the closing stage in the current safety analysis module of each stage is as follows:
extracting a standard current and running time relation diagram of each power closing stage corresponding to a target fan stored in a database, and screening the corresponding closing stage of the target fan according to the power of the target fanFrom which the standard current rise time of the off phase is analyzedPeak value of standard current rise->And the time when the standard current drops to zero +.>；
Analyzing a relation diagram of current and operation time of a closing stage in the operation process of the target fan to obtain current rising time of the closing stage in the operation process of the target fanPeak value of current rise->And the time when the current drops to zero +.>；
Current rise time of closing stage in operation process of target fanPeak value of current rise->Time when current drops to zero +.>And standard current rise time of the off phase +.>Peak value of standard current rise->Time when standard current drops to zero +.>Carry formula->Obtaining the current safety coefficient of the closing stage in the running process of the target fan>Wherein->The current influence factor is expressed as a preset closing phase;
comparing and analyzing the current safety coefficient of the closing stage in the running process of the target fan with the current safety coefficient of the standard closing stage in the running process of the preset target fan, if the current safety coefficient of the closing stage in the running process of the target fan is smaller than the current safety coefficient of the standard closing stage in the running process of the preset target fan, indicating the current safety of the closing stage in the running process of the target fan, and if the current safety coefficient of the closing stage in the running process of the target fan is larger than the current safety coefficient of the standard closing stage in the running process of the preset target fan, sending an early warning instruction to the control system.
8. The fan current detection control system according to claim 1, wherein: the specific analysis process of the comprehensive current safety coefficient analysis module is as follows:
current safety coefficient of starting stage in operation process of target fanCurrent safety factor of transition stage in operation process of target fan>Smooth operation stage in operation process of target fanIs>And the current safety factor in the closing stage of the target fan in the operation process>Carry formula->Obtaining the comprehensive current safety coefficient in the operation process of the target fan>Wherein->Expressed as a preset current safety correction factor of each stage, < >>Expressed as a preset integrated current safety influencing factor, < >>The current safety weight is expressed as a preset current safety weight;
comparing and analyzing the comprehensive current safety coefficient in the operation process of the target fan with the standard comprehensive current safety coefficient in the operation process of the preset target fan, if the comprehensive current safety coefficient in the operation process of the target fan is smaller than the standard comprehensive current safety coefficient in the operation process of the preset target fan, indicating the current safety in the operation process of the target fan, and if the comprehensive current safety coefficient in the operation process of the target fan is larger than the standard comprehensive current safety coefficient in the operation process of the preset target fan, sending an early warning instruction to the control system.
9. The fan current detection control method is characterized by comprising the following steps of:
acquiring a relation diagram of current and operation time of each operation sub-stage in the operation process of the target fan;
extracting a standard current and operation time relation diagram of each operation sub-stage stored in a database according to the starting power and the starting peak value of the target fan;
analyzing the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan according to the current and operation time relation diagram and the standard current and operation time relation diagram of each operation sub-stage in the operation process of the target fan;
analyzing the comprehensive current safety coefficient in the operation process of the target fan according to the current safety condition or the current safety influence coefficient of each operation sub-stage in the operation process of the target fan;
the comprehensive current safety coefficient in the operation process of the target fan is compared and analyzed with the standard comprehensive current safety coefficient in the operation process of the target fan, and intelligent adjustment is performed according to the analysis result.
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