Disclosure of Invention
In order to overcome the defects in the background technology, the embodiment of the invention provides a communication base station dual-power system based on the Internet of things, which can effectively solve the problems related to the background technology.
The invention provides a communication base station dual-power system based on the Internet of things, which comprises a power detection module, a power control module and a power control module, wherein the power detection module is used for detecting electric energy parameters of a main power supply at all time points, and the electric energy parameters comprise output current, output voltage and fluctuation degree of the output current.
The power analysis module is used for analyzing the fault condition of the main power supply according to the electric energy parameter of the main power supply and judging whether the standby power supply needs to be started or not, and the fault condition comprises overvoltage, power failure and short circuit.
The power supply switching module is used for detecting power supply switching parameters when switching from a main power supply to a standby power supply, analyzing to obtain a power supply switching evaluation coefficient, and feeding back the power supply switching evaluation coefficient, wherein the power supply switching parameters comprise timeliness and stability of power supply switching.
And the power monitoring module is used for continuously monitoring the electric energy parameters of each monitoring time point of the main power supply during the working period of the standby power supply, analyzing the electric energy evaluation coefficients of each monitoring time point of the main power supply and further judging whether to switch the power supply back to the main power supply.
The power health analysis module is used for detecting the power health parameters of the standby power supply when the standby power supply does not work, analyzing the power health parameters to obtain the health evaluation coefficient of the standby power supply, and feeding back the health evaluation coefficient of the standby power supply, wherein the power health parameters of the standby power supply comprise direct current internal resistance, alternating current internal resistance and charge and discharge efficiency.
And the power supply charging module is used for monitoring the electric quantity of the standby power supply at each detection time point in real time to judge whether the standby power supply needs to be charged or not, detecting the electric quantity of the battery of the standby power supply in real time in the charging process, and judging whether the charging is finished or not.
And the management database is used for storing a reference value of a preset power supply switching time, a reference value of internal resistance of the standby power supply and charging and discharging efficiency.
Preferably, the specific analysis method of the power supply detection module comprises selecting a plurality of monitoring points in an input end, an output end and a branch circuit of a main power supply, sequentially numbering the monitoring points as all monitoring points of the main power supply, and numbering all monitoring points of the main power supply as all monitoring pointsSimultaneously, selecting time points according to the set interval time length, marking the time points as time points, detecting the output current of each time point of each monitoring point of the main power supply through a current sensor, and marking the time points as time points,Represent the firstThe number of the point in time is the number,The output current of each monitoring point of the main power supply is obtained by averaging the output current of each time point of the main power supply and recorded asFormula (VI)Obtaining the fluctuation degree of the output current of the main power supply at each time point,And the number of the monitoring points is represented, meanwhile, the output voltage of each time point of the main power supply is detected through a voltage sensor, and the output voltage of each time point of the main power supply is obtained by averaging the output voltage.
The specific analysis method of the power analysis module comprises the steps of firstly, reading output voltage of each time point of a main power supply, comparing the output voltage with a preset main power supply overvoltage threshold value in sequence, if the output voltage of the main power supply at a certain time point is larger than or equal to the preset main power supply overvoltage threshold value, indicating that the main power supply at the time point has an overvoltage phenomenon, cutting off the output of the main power supply, switching a load to a standby power supply, and recording the time point as a fault time point of the main power supply.
And if the output voltage of the main power supply at a certain time point is 0, the main power supply fails at the time point, the standby power supply needs to be switched, and the time point is marked as a fault time point.
And thirdly, reading the fluctuation degree of the output current of the main power supply at each time point, comparing the fluctuation degree with a preset fluctuation degree threshold value, if the fluctuation degree of the output current of the main power supply at a certain time point is larger than or equal to the preset fluctuation degree threshold value, indicating that the main power supply at the time point has a short circuit phenomenon, switching the load to the standby power supply by cutting off the output of the main power supply, and simultaneously marking the time point as the fault time point of the main power supply.
The method for analyzing the power switching parameters comprises the steps of connecting a high-precision timing sensor with a power switching device, detecting the actual time length of switching between a main power supply and a standby power supply, and recording the detected time length as the power switching time lengthMeanwhile, a voltage abrupt change monitoring sensor is arranged on a power supply line of the system, an abrupt change signal of a main power supply is detected, a corresponding time point of the abrupt change signal is obtained and is recorded as a power supply switching time point, meanwhile, a fault time point of the main power supply is read, the power supply switching time point and the fault time point of the main power supply are respectively unified into a set time unit, and a power supply voltage abrupt change switching time length is obtained by differencing the converted power supply switching time point and the fault time point of the main power supply and is recorded asBy the formulaObtaining timeliness of power supply switching,A reference value indicating a preset power supply switching period.
Step two, after switching to the standby power supply, selecting a plurality of monitoring time points according to the set interval time length, respectively detecting the output voltage and the output current of each monitoring time point of the standby power supply, and recording as,Represent the firstThe number of the individual monitoring time points,The output voltage and the output current of the standby power supply are obtained by respectively averaging the output voltage and the output current of each monitoring time point of the standby power supply and are recorded asSubstituting it into formula、Obtaining the voltage fluctuation degree of the standby power supplyDegree of current fluctuationSubstituting it into formulaObtaining stability of power supply switching,A weight factor indicating a preset degree of voltage fluctuation and a current fluctuation,Representing natural constants.
Preferably, the specific analysis method of the power supply switching evaluation coefficient comprises the steps of respectively reading timeliness of power supply switchingStability ofSubstituting it into formulaObtaining a power supply switching evaluation coefficientWhereinThe method comprises the steps of respectively representing set weight factors of timeliness and stability of power switching, comparing a power switching evaluation coefficient with a preset power switching evaluation coefficient threshold, if the power switching evaluation coefficient is larger than or equal to the preset power switching evaluation coefficient threshold, representing that the power switching evaluation coefficient is qualified, and if the power switching evaluation coefficient is smaller than the preset power switching evaluation coefficient threshold, representing that the power switching evaluation coefficient is unqualified, and feeding back the system.
Preferably, the specific analysis method of the power supply monitoring module comprises detecting output current and output voltage of each monitoring time point of the main power supply during the working period of the standby power supply, obtaining the output voltage and output current of each monitoring time point of the main power supply by averaging, and recording asAnalyzing the fluctuation degree of the output current of each monitoring time point of the main power supply according to the method of analyzing the fluctuation degree of the output current of each time point of the main power supply, and recording the fluctuation degree asSubstituting it into formula
Obtaining electric energy evaluation coefficients of all monitoring time points of the main power supply,Representing a preset main power supply output voltage and an output current reference value,Weight factors respectively representing the set output voltage, output current and fluctuation degree of the output current,Indicating the number of monitoring time points.
Preferably, the specific analysis method for judging whether to switch the power supply back to the main power supply comprises the steps of reading the electric energy evaluation coefficient of each monitoring time point of the main power supply, comparing the electric energy evaluation coefficient of each monitoring time point of the main power supply with a preset electric energy evaluation coefficient threshold value, and if the electric energy evaluation coefficient of a certain monitoring time point of the main power supply is greater than or equal to the preset electric energy evaluation coefficient threshold value, indicating that the electric energy evaluation coefficient of the main power supply is qualified at the monitoring time point, and switching the power supply back to the main power supply.
The method comprises the steps of connecting a constant current source with a standby power source, outputting a set constant current for the constant current source, starting the constant current source to start discharging, monitoring the voltage value at the moment of starting discharging at two ends of the standby power source and the voltage value after the discharging set time in real time by using a voltmeter, and respectively recording asBy the formulaObtaining voltage drop across standby power supplyThe set constant current is recorded asBy the formulaObtaining the direct current internal resistance of the standby power supply。
Step two, connecting an alternating current power supply, a standby power supply, a voltmeter and an ammeter into a circuit in a correct way, setting alternating current voltages with various frequencies from low to high according to set frequencies, gradually applying the alternating current voltages to the standby power supply, respectively measuring current values corresponding to the alternating current voltages with various frequencies through the ammeter, thus constructing a volt-ampere characteristic curve, selecting a plurality of frequency points in the volt-ampere characteristic curve, dividing a plurality of frequency point groups by taking adjacent frequency points as a group, marking the frequency point groups as frequency points, obtaining the alternating current internal resistance of the standby power supply by obtaining the slope of the connecting lines of the frequency points of the groups and averaging the slope, marking the alternating current internal resistance as。
Third, charging and discharging test is carried out on the standby power supply respectively, and the charging time length of the standby power supply is recordedDuration of dischargeSelecting a plurality of time points with equal intervals from the charging time and the discharging time of the standby power supply, marking the time points as each charging time point and each discharging time point, respectively detecting the voltage and the current of each charging time point and each discharging time point of the standby power supply, marking the time points as,Represent the firstThe number of the time points of the charging,,Represent the firstThe number of the time points of the discharge,By the formula
Obtaining the charge and discharge efficiency of the standby power supply,The number of discharge time points is indicated,Indicating the number of charging time points.
Preferably, the specific analysis method of the health evaluation coefficient of the standby power supply comprises the steps of respectively reading the direct current internal resistance of the standby power supplyInternal resistance of ACCharge and discharge efficiencySubstituting it into formula
Obtaining health evaluation coefficient of standby power supplyWhereinWeight factors respectively representing the internal resistance and the charge-discharge efficiency of a preset standby power supply,And respectively representing the preset reference values of the internal resistance and the charge-discharge efficiency of the standby power supply, comparing the health evaluation coefficient of the standby power supply with a preset health evaluation coefficient threshold value, and if the health evaluation coefficient of the standby power supply is larger than or equal to the preset health evaluation coefficient threshold value, representing that the health evaluation coefficient of the standby power supply is qualified, otherwise, representing that the health evaluation coefficient of the standby power supply is unqualified, and feeding back to the system.
The specific analysis method of the power supply charging module comprises the steps of firstly, selecting and detecting a plurality of time points according to set time length, recording the time points as detection time points, and monitoring the electric quantity of the standby power supply at the detection time points in real time to obtain the electric quantity of the standby power supply at the detection time points.
And secondly, respectively comparing the electric quantity of each detection time point of the standby power supply with the preset minimum electric quantity of the battery, and when the electric quantity of a certain detection time point of the standby power supply is smaller than the preset minimum electric quantity of the battery, indicating that the standby power supply needs to be charged.
And thirdly, selecting a charging mode of the standby power supply, transmitting proper current and voltage to the standby power supply for charging, detecting the battery electric quantity of the standby power supply in real time in the charging process, and further judging whether the charging is completed or not.
Compared with the prior art, the invention has the advantages that firstly, the fault condition of the main power supply is analyzed according to the electric energy parameter of the main power supply, whether the standby power supply needs to be started or not is judged, and the possible abnormal conditions of the main power supply, such as overlarge current fluctuation or unstable voltage, can be found in time, so that early warning and maintenance can be carried out in advance, and the reliability of a power supply system can be improved.
2. According to the invention, the power switching parameters are detected during power switching, the power switching evaluation coefficient is obtained through analysis, feedback is carried out, the rationality and the safety of power switching are ensured, and the switching time and the switching effect can be better mastered through the power switching evaluation coefficient.
3. According to the invention, the electric energy parameters of each monitoring time point of the main power supply are continuously monitored during the working period of the standby power supply, and the electric energy evaluation coefficient of each monitoring time point of the main power supply is analyzed, so that whether the power supply is switched back to the main power supply is judged, and the flexibility and reliability of the power supply are improved.
4. According to the invention, the health parameters of the standby power supply are detected when the standby power supply does not work, and the health evaluation coefficient of the standby power supply is obtained through analysis, so that potential problems can be found in advance, and maintenance and management preparation are made.
5. The invention monitors the electric quantity of the standby power supply at each detection time point in real time to judge whether the standby power supply needs to be charged, and detects the electric quantity of the battery of the standby power supply in real time in the charging process, so as to judge whether the charging is completed, ensure that the standby power supply is in a usable state at any time, and enhance the emergency guarantee capability of the system.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a dual-power system of a communication base station based on the internet of things includes a power detection module, a power analysis module, a power switching module, a power monitoring module, a power health analysis module, a power charging module, and a management database.
The management database is connected with the power analysis module, the power switching module, the power health analysis module and the power charging module, the power detection module is connected with the power analysis module, and the power monitoring module is connected with the power health analysis module.
The power supply detection module is used for detecting electric energy parameters of the main power supply at all time points, wherein the electric energy parameters comprise output current, output voltage and fluctuation degree of the output current.
The specific analysis method of the power supply detection module comprises selecting a plurality of monitoring points in the input end, the output end and the branch circuit of the main power supply, sequentially numbering the monitoring points as each monitoring point of the main power supply, and numbering each monitoring point of the main power supply as each monitoring pointSimultaneously, selecting time points according to the set interval time length, marking the time points as time points, detecting the output current of each time point of each monitoring point of the main power supply through a current sensor, and marking the time points as time points,Represent the firstThe number of the point in time is the number,The output current of each monitoring point of the main power supply is obtained by averaging the output current of each time point of the main power supply and recorded asFormula (VI)Obtaining the fluctuation degree of the output current of the main power supply at each time point,The method and the device have the advantages that the number of the monitoring points is represented, meanwhile, the output voltage of each time point of each monitoring point of the main power supply is detected through the voltage sensor, the output voltage of each time point of the main power supply is obtained through averaging, abnormal conditions possibly existing in the main power supply, such as overlarge current fluctuation or unstable voltage, can be found in time, early warning and maintenance are carried out in advance, and the reliability of a power supply system is improved.
The power analysis module is used for analyzing the fault condition of the main power supply according to the electric energy parameter of the main power supply and judging whether the standby power supply needs to be started or not, and the fault condition comprises overvoltage, power failure and short circuit.
Referring to fig. 2, the specific analysis method of the power analysis module includes the first step of reading output voltage of the main power supply at each time point, comparing the output voltage with a preset main power supply overvoltage threshold value in sequence, if the output voltage of the main power supply at a certain time point is greater than or equal to the preset main power supply overvoltage threshold value, indicating that the main power supply at the time point has an overvoltage phenomenon, cutting off the output of the main power supply, switching the load to a standby power supply, and recording the time point as a fault time point of the main power supply.
And if the output voltage of the main power supply at a certain time point is 0, the main power supply is powered off at the time point, the standby power supply needs to be switched, the time point is marked as a fault time point, the power failure condition of the main power supply can be detected at the first time, the standby power supply can be switched in time, and the uninterrupted operation of the load equipment is ensured.
And thirdly, reading the fluctuation degree of the output current of the main power supply at each time point, comparing the fluctuation degree with a preset fluctuation degree threshold, if the fluctuation degree of the output current of the main power supply at a certain time point is larger than or equal to the preset fluctuation degree threshold, indicating that the main power supply at the time point has a short circuit phenomenon, switching the load to a standby power supply, and simultaneously marking the time point as a fault time point of the main power supply, switching the power supply in time, reducing the influence of the short circuit on the system, and simultaneously accurately recording the fault time point, thereby facilitating the subsequent maintenance and analysis.
The power supply switching module is used for detecting power supply switching parameters when switching from a main power supply to a standby power supply, analyzing to obtain a power supply switching evaluation coefficient, and feeding back the power supply switching evaluation coefficient, wherein the power supply switching parameters comprise timeliness and stability of power supply switching.
The specific analysis method of the power switching parameters comprises the first step of connecting a high-precision timing sensor with a power switching device, detecting the actual time spent in switching the main power supply and the standby power supply, and recording as the power switching timeMeanwhile, a voltage abrupt change monitoring sensor is arranged on a power supply line of the system, an abrupt change signal of a main power supply is detected, a corresponding time point of the abrupt change signal is obtained and is recorded as a power supply switching time point, meanwhile, a fault time point of the main power supply is read, the power supply switching time point and the fault time point of the main power supply are respectively unified into a set time unit, and a power supply voltage abrupt change switching time length is obtained by differencing the converted power supply switching time point and the fault time point of the main power supply and is recorded asBy the formulaObtaining timeliness of power supply switching,The method comprises the steps of displaying a preset reference value of the power supply switching time, timely finding out whether the power supply switching is timely, ensuring that the switching can be responded quickly when a fault occurs, and reducing the influence on a system.
In one embodiment, the time unit is set to seconds, the failure time point of the main power supply and the power supply switching time point are respectively 2024, 11, 4, 10, 20 minutes, 30 seconds, 2024, 11, 4, 11, 50 minutes, 45 seconds, 10 hours, 11 hours are respectively converted to 36000 seconds, 39600 seconds, the minutes and the seconds are calculated, 20 minutes, 50 minutes are converted to 1200 seconds, 3000 seconds, 30 seconds and 45 seconds are kept unchanged, and the total seconds after the failure time point of the main power supply is converted areSecond, the total seconds after the power switching time point is converted isSecond, the two are subjected to difference to obtain the power supply voltage abrupt change switching durationSecond.
Step two, after switching to the standby power supply, selecting a plurality of monitoring time points according to the set interval time length, respectively detecting the output voltage and the output current of each monitoring time point of the standby power supply, and recording as,Represent the firstThe number of the individual monitoring time points,The output voltage and the output current of the standby power supply are obtained by respectively averaging the output voltage and the output current of each monitoring time point of the standby power supply and are recorded asSubstituting it into formula、Obtaining the voltage fluctuation degree of the standby power supplyDegree of current fluctuationSubstituting it into formulaObtaining stability of power supply switching,A weight factor indicating a preset degree of voltage fluctuation and a current fluctuation,The method can be used for timely finding out whether the standby power supply is stable in the operation process, and guaranteeing continuous and reliable operation of equipment.
The specific analysis method of the power supply switching evaluation coefficient comprises the steps of respectively reading timeliness of power supply switchingStability ofSubstituting it into formulaObtaining a power supply switching evaluation coefficientWhereinThe method comprises the steps of respectively representing the set weight factors of timeliness and stability of power supply switching, comparing a power supply switching evaluation coefficient with a preset power supply switching evaluation coefficient threshold, if the power supply switching evaluation coefficient is larger than or equal to the preset power supply switching evaluation coefficient threshold, representing that the power supply switching evaluation coefficient is qualified, and if the power supply switching evaluation coefficient is smaller than the preset power supply switching evaluation coefficient threshold, representing that the power supply switching evaluation coefficient is unqualified, feeding back the system, and being beneficial to self-adjusting and optimizing of the system according to the power supply switching condition, and improving the overall performance and reliability of the system.
It should be noted that, in one embodiment,It may be set to 0.5,Can set to 0.5, it is comparatively important to switch timeliness, if the power switches not timely enough, can lead to equipment outage in the twinkling of an eye, cause serious consequences such as data loss, equipment damage even security risk, the normal operating of system is great to the influence, and switching stability is also not negligible, stable power output is crucial to the long-term reliable operation of equipment, if stability is poor, can make equipment work unusual, shorten equipment life-span etc. therefore the timeliness of power switch, the weight that stability corresponds are equal.
And the power monitoring module is used for continuously monitoring the electric energy parameters of each monitoring time point of the main power supply during the working period of the standby power supply, analyzing the electric energy evaluation coefficients of each monitoring time point of the main power supply and further judging whether to switch the power supply back to the main power supply.
The specific analysis method of the power supply monitoring module comprises the steps of detecting the output current and the output voltage of each monitoring time point of the main power supply during the working period of the standby power supply, obtaining the output voltage and the output current of each monitoring time point of the main power supply by calculating the average value, and recording asAnalyzing the fluctuation degree of the output current of each monitoring time point of the main power supply according to the method of analyzing the fluctuation degree of the output current of each time point of the main power supply, and recording the fluctuation degree asSubstituting it into formula
Obtaining electric energy evaluation coefficients of all monitoring time points of the main power supply,Representing a preset main power supply output voltage and an output current reference value,Weight factors respectively representing the set output voltage, output current and fluctuation degree of the output current,The method is favorable for grasping the typical performance of the main power supply more accurately and reflecting the stability and reliability of the power supply of the main power supply.
It should be noted that, in one embodiment,It may be set to 0.4,It may be set to 0.4,The voltage fluctuation is larger or deviates from a normal value, equipment failure or damage can be directly caused, the output current reflects the load capacity and the power supply condition of the power supply, the current abnormality can suggest that the power supply or the load has problems, the fluctuation degree of the output current mainly shows the stability of the power supply, although the fluctuation is not as critical as the voltage, the fluctuation for a long time can also have adverse effect on the equipment, and therefore, the output voltage and the output current have higher corresponding weight.
The specific analysis method for judging whether to switch the power supply back to the main power supply comprises the steps of reading the electric energy evaluation coefficient of each monitoring time point of the main power supply, comparing the electric energy evaluation coefficient of each monitoring time point of the main power supply with a preset electric energy evaluation coefficient threshold value, if the electric energy evaluation coefficient of a certain monitoring time point of the main power supply is larger than or equal to the preset electric energy evaluation coefficient threshold value, indicating that the electric energy evaluation coefficient of the main power supply is qualified at the monitoring time point, switching the power supply back to the main power supply, guaranteeing the stability and reliability of the power supply, switching back in time when the main power supply is recovered to be normal, reducing the dependence on a standby power supply, and improving the efficiency of the whole power supply system.
The power health analysis module is used for detecting the power health parameters of the standby power supply when the standby power supply does not work, analyzing the power health parameters to obtain the health evaluation coefficient of the standby power supply, and feeding back the health evaluation coefficient of the standby power supply, wherein the power health parameters of the standby power supply comprise direct current internal resistance, alternating current internal resistance and charge and discharge efficiency.
The specific analysis method of the power health parameters of the standby power supply comprises the steps of firstly, connecting a constant current source with the standby power supply, outputting a set constant current for the constant current source, starting the constant current source to start discharging, monitoring the voltage value at the moment of starting discharging at two ends of the standby power supply and the voltage value after the discharging set time by utilizing a voltmeter in real time, and respectively recording asBy the formulaObtaining voltage drop across standby power supplyThe set constant current is recorded asBy the formulaObtaining the direct current internal resistance of the standby power supplyThe direct-current internal resistance of the standby power supply can be accurately measured, and the internal resistance characteristic of the standby power supply under the direct-current discharge condition can be known, so that the performance and the health condition of the standby power supply can be estimated.
Step two, connecting an alternating current power supply, a standby power supply, a voltmeter and an ammeter into a circuit in a correct way, setting alternating current voltages with various frequencies from low to high according to set frequencies, gradually applying the alternating current voltages to the standby power supply, respectively measuring current values corresponding to the alternating current voltages with various frequencies through the ammeter, thus constructing a volt-ampere characteristic curve, selecting a plurality of frequency points in the volt-ampere characteristic curve, dividing a plurality of frequency point groups by taking adjacent frequency points as a group, marking the frequency point groups as frequency points, obtaining the alternating current internal resistance of the standby power supply by obtaining the slope of the connecting lines of the frequency points of the groups and averaging the slope, marking the alternating current internal resistance asBy constructing the volt-ampere characteristic curve, the current response condition of the standby power supply under different alternating voltage frequencies can be comprehensively known, and the alternating current characteristic of the standby power supply can be further mastered.
The specific analysis method for constructing the volt-ampere characteristic curve comprises the steps of respectively reading alternating voltage of each frequency and alternating current of each frequency, constructing a two-dimensional coordinate system by taking the alternating voltage as an abscissa and the alternating current as an ordinate, and further marking a plurality of points in the constructed two-dimensional coordinate system aiming at the alternating current corresponding to the alternating voltage of each frequency to form an alternating voltage-alternating current curve which is marked as the volt-ampere characteristic curve.
The specific analysis method of the alternating current internal resistance of the standby resistor comprises the steps of obtaining coordinates of two frequency points in each group of frequency points, and respectively marking the coordinates as,Represent the firstThe number of the group frequency points,Substituting it into formulaObtaining AC internal resistance of standby resistor,Representing the number of groups of frequency bins.
Third, charging and discharging test is carried out on the standby power supply respectively, and the charging time length of the standby power supply is recordedDuration of dischargeSelecting a plurality of time points with equal intervals from the charging time and the discharging time of the standby power supply, marking the time points as each charging time point and each discharging time point, respectively detecting the voltage and the current of each charging time point and each discharging time point of the standby power supply, marking the time points as,Represent the firstThe number of the time points of the charging,,Represent the firstThe number of the time points of the discharge,By the formula
Obtaining the charge and discharge efficiency of the standby power supply,The number of discharge time points is indicated,Indicating the number of charging time points, and helping to find possible problems of the standby power supply in the charging and discharging processes, such as low charging efficiency, unstable discharging and the like, so as to improve or regulate in time.
The specific analysis method of the health evaluation coefficient of the standby power supply comprises the steps of respectively reading the direct current internal resistance of the standby power supplyInternal resistance of ACCharge and discharge efficiencySubstituting it into formula
Obtaining health evaluation coefficient of standby power supplyWhereinWeight factors respectively representing the internal resistance and the charge-discharge efficiency of a preset standby power supply,The method comprises the steps of respectively representing the preset reference values of internal resistance and charging and discharging efficiency of the standby power supply, comparing the health evaluation coefficient of the standby power supply with the preset health evaluation coefficient threshold, if the health evaluation coefficient of the standby power supply is larger than or equal to the preset health evaluation coefficient threshold, representing that the health evaluation coefficient of the standby power supply is qualified, otherwise, representing that the health evaluation coefficient of the standby power supply is unqualified, feeding back to the system, and helping to improve the stability and safety of the whole system and ensuring that the standby power supply can normally operate when the standby power supply is required to play a role.
It should be noted that, in one embodiment,It may be set to 0.6,The charging and discharging efficiency can be set to 0.4, the effectiveness of energy conversion and utilization of the standby power supply in actual use is directly reflected, the charging and discharging efficiency is important for the standby power supply to stably provide power for a long time, the higher charging and discharging efficiency means better performance and longer endurance, the normal operation of a guarantee system is significant, and the weight of the internal resistance of the standby power supply is not negligible. A smaller internal resistance generally means better power transmission performance and lower energy loss, which affects the stability and reliability of the power output, but in some cases, the charge-discharge efficiency may be more critical, because it can more directly represent the performance of the standby power under the actual working state, so the internal resistance of the standby power is correspondingly weighted more.
And the power supply charging module is used for monitoring the electric quantity of the standby power supply at each detection time point in real time to judge whether the standby power supply needs to be charged or not, detecting the electric quantity of the battery of the standby power supply in real time in the charging process, and judging whether the charging is finished or not.
Referring to fig. 3, the specific analysis method of the power charging module includes a first step of selecting a plurality of detection time points according to a set time length, recording the detection time points as detection time points, and monitoring the electric quantity of the standby power supply at each detection time point in real time to obtain the electric quantity of the standby power supply at each detection time point, thereby enhancing the reliability and stability of the system and preventing the system from failure or interruption caused by insufficient electric quantity of the standby power supply.
And secondly, respectively comparing the electric quantity of each detection time point of the standby power supply with the preset minimum electric quantity of the battery, and when the electric quantity of a certain detection time point of the standby power supply is smaller than the preset minimum electric quantity of the battery, indicating that the standby power supply needs to be charged.
And thirdly, selecting a charging mode of the standby power supply, transmitting proper current and voltage to the standby power supply for charging, detecting the battery electric quantity of the standby power supply in real time in the charging process, and judging whether the charging is finished or not, wherein the accurate charging control can improve the charging efficiency, shorten the charging time and reduce the energy waste.
And the management database is used for storing a reference value of a preset power supply switching time, a reference value of internal resistance of the standby power supply and charging and discharging efficiency.
According to the system, the fault condition of the main power supply is analyzed through the electric energy parameters of the main power supply, whether the standby power supply is required to be started or not is judged, the power switching evaluation coefficient is obtained through the power switching parameters, the electric energy evaluation coefficient of each monitoring time point of the main power supply is obtained through the electric energy parameters of each monitoring time point of the main power supply, whether power supply is switched back to the main power supply is judged, the health evaluation coefficient of the standby power supply is obtained through the power health parameters of the standby power supply, whether the standby power supply needs to be charged or not is judged through the electric quantity of the standby power supply at each detection time point, the electric quantity of a battery of the standby power supply is detected in real time, whether charging is completed or not is judged, accurate analysis and intelligent switching decision of the power supply state are realized, and the reliability and autonomy of the system are improved.
While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention, which is also intended to be covered by the present invention.