CN116051079B - Uninterrupted power source predictive maintenance system - Google Patents
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Abstract
The invention relates to the technical field of power supplies, which is used for solving the problems that in the existing uninterruptible power supply prediction maintenance mode, prediction analysis is difficult to be carried out on the uninterruptible power supply from multiple aspects, so that the prediction and maintenance of the uninterruptible power supply are inaccurate and the stable operation of the uninterruptible power supply is influenced; according to the invention, accurate prediction analysis is carried out on the uninterruptible power supply in the application of the Internet of things from the battery pack layer, the power supply performance layer and the communication performance layer of the uninterruptible power supply respectively, and on the basis of the accurate prediction analysis, text early warning and corresponding maintenance operation are adopted to realize the stable operation of the uninterruptible power supply and the stable power supply of the Internet of things.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to an uninterruptible power supply predictive maintenance system.
Background
The uninterrupted power supply is an uninterrupted power supply containing an energy storage device, and is mainly used for providing uninterrupted power supply for equipment with high requirements on power stability, ensuring uninterrupted operation of equipment and instruments and preventing loss of computer data, interruption of telephone communication network or loss of control of the equipment. Therefore, it is important to realize accurate fault prediction of the uninterruptible power supply.
However, the existing uninterruptible power supply is predicted and maintained, and the uninterruptible power supply cannot be predicted and analyzed from multiple aspects, so that the fault state of the uninterruptible power supply is predicted inaccurately, the inaccuracy of the maintenance plan of the uninterruptible power supply is further caused, the uninterruptible power supply cannot be maintained timely, and the stable operation of the uninterruptible power supply is affected.
In order to solve the above-mentioned defect, a technical scheme is provided.
Disclosure of Invention
The invention aims to solve the problems that in the existing uninterruptible power supply prediction maintenance mode, prediction analysis is difficult to be carried out on the uninterruptible power supply from multiple aspects, so that the prediction and maintenance of the uninterruptible power supply are inaccurate and the stable operation of the uninterruptible power supply is influenced.
The aim of the invention can be achieved by the following technical scheme:
the uninterrupted power supply predictive maintenance system comprises a server, wherein the server is in communication connection with a data acquisition unit, a power supply performance predictive analysis unit, a communication performance predictive analysis unit, a battery pack predictive analysis unit, a fault maintenance management and control unit, a control terminal and a display terminal;
the data acquisition unit is used for acquiring the operation parameter information of a battery pack of the uninterruptible power supply, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply in the application of the Internet of things, and respectively transmitting the operation parameter information, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply to the battery pack prediction analysis unit, the power supply performance prediction analysis unit and the communication performance prediction analysis unit through the server;
the battery pack prediction analysis unit is used for receiving the operation parameter information of the battery pack of the uninterruptible power supply, performing battery pack operation prediction analysis processing, generating a battery discharge overheating instruction, a battery strong charge overheating instruction, a battery floating charging overheating instruction, a battery external short circuit overheating instruction, a battery block use serious excessive instruction and a battery block use slight excessive instruction according to the operation parameter information, and sending the battery discharge overheating instruction, the battery strong charge overheating instruction, the battery floating charging overheating instruction, the battery external short circuit overheating instruction, the battery block use serious excessive instruction and the battery block use slight excessive instruction to the fault maintenance management and control unit;
the power supply performance prediction analysis unit is used for receiving basic parameter information and power supply performance parameters of the uninterruptible power supply, performing power supply performance prediction analysis processing, generating a power supply performance good signal and a power supply performance secondary signal according to the power supply performance prediction analysis processing, and sending the power supply performance secondary signal to the fault maintenance management and control unit;
the communication performance prediction analysis unit is used for receiving communication parameter information of the uninterruptible power supply, performing communication performance prediction analysis processing, generating a signal with good communication performance and a communication performance secondary signal according to the communication parameter information, and sending the communication performance secondary signal to the fault maintenance management and control unit;
the fault maintenance control unit is used for performing fault maintenance operation on various fault feedback signals of the received uninterruptible power supply through the control terminal and performing text output early warning operation through the display terminal.
Further, the specific operation steps of the battery operation prediction analysis process are as follows:
the method comprises the steps of monitoring temperature values in running state parameter information of each battery block of the uninterruptible power supply in real time, setting a first temperature reference interval Qu1 and a second temperature reference interval Qu2, substituting the temperature values of each battery block of the uninterruptible power supply into the preset first temperature reference interval Qu1 and second temperature reference interval Qu2, and comparing and analyzing;
when the temperature value of the battery block is within a preset first temperature reference interval Qu1, generating an operating temperature normal signal, and when the temperature value of the battery block is within a preset second temperature reference interval Qu2, generating an operating temperature exceeding signal;
counting the occupation ratio of the battery blocks calibrated as the operation temperature exceeding signal, and obtaining the occupation ratio of the battery blocks with abnormal temperature;
setting an upper limit value alpha of the duty ratio of the abnormal temperature battery block, and comparing and analyzing the duty ratio of the abnormal temperature battery block with a preset upper limit value alpha of the duty ratio;
when the ratio of the battery blocks with abnormal temperature is larger than or equal to the preset upper limit value alpha of the ratio, triggering a battery pack integral screening instruction, and performing integral fault check analysis processing on the battery pack, thereby generating a battery discharging overheat instruction, a battery strong charging overheat instruction, a battery floating overheat instruction or a battery external short circuit overheat instruction;
when the ratio of the abnormal temperature battery block is larger than or equal to the preset upper limit value alpha of the ratio, triggering a battery block monomer screening instruction, and performing battery block monomer fault check analysis processing, thereby generating a serious excessive use instruction of the battery block and a slight excessive use instruction of the battery block.
Further, the specific operation steps of the overall fault detection and analysis process of the battery pack are as follows:
according to the generated battery pack integral screening instruction, acquiring charging and discharging current of the battery pack of the uninterruptible power supply in real time, generating a battery discharging state feedback signal when the charging and discharging current is less than zero, and triggering a battery discharging to cause an overheat instruction;
when the charge and discharge current is greater than zero, a battery charge state feedback signal is generated, the electric increment of the battery pack of the uninterrupted power supply in unit time is obtained according to the generated battery charge state feedback signal, a comparison threshold value TH1 of the electric increment is set, and when the electric increment of the battery pack is greater than or equal to a preset comparison threshold value TH1, a battery strong charge leading to an overheat instruction is triggered;
when the charging and discharging current is equal to zero, a battery float state feedback signal is generated, a float charging current value of the battery pack is obtained in real time according to the generated battery float state feedback signal, a comparison threshold value TH2 of the float charging current value is set, when the float charging current value of the battery pack is greater than or equal to a preset comparison threshold value TH2, the battery float charging is triggered to cause an overheat instruction, otherwise, when the float charging current value of the battery pack is smaller than the preset comparison threshold value TH2, an external short circuit inspection instruction is triggered, a voltage value of the battery pack is obtained, a comparison threshold value TH3 of the voltage value is set, and when the voltage value of the battery pack is smaller than the preset comparison threshold value TH3, the battery external short circuit is triggered to cause the overheat instruction.
Further, the specific operation steps of the battery block single body fault detection and analysis process are as follows:
according to the generated single battery block screening instruction, monitoring the voltage value, the internal resistance value and the discharge amount of each corresponding battery block in real time, and calibrating the voltage value, the internal resistance value and the discharge amount as uv respectively j 、rv j And dc j And normalized and analyzed according to the set formula use j =ρ1*uv j +ρ2*rv j +ρ3*dc j Obtaining the use coefficient of each battery block j And ρ1, ρ2 and ρ3 are weight factor coefficients of the voltage value, the internal resistance value and the discharge amount, respectively;
setting a use reference threshold value val of the use coefficient of each battery block, and comparing and analyzing the use coefficient of each battery block with a preset use reference threshold value val;
when the use coefficient of the battery block is larger than a preset use reference threshold value val, a serious excessive use instruction of the battery block is generated, and when the use coefficient of the battery block is smaller than or equal to the preset use reference threshold value val, a slight excessive use instruction of the battery block is generated.
Further, the specific operation steps of the power supply performance prediction analysis processing are as follows:
basic parameter information of the uninterruptible power supply is obtained in real time, and the cyclic monitoring mechanism is set, analyzed and processed, so that a first-order patrol period setting instruction and a second-order patrol period setting instruction are generated;
based on a set circulation monitoring mechanism, acquiring the capacity, output voltage, output frequency, conversion time and efficiency of the power supply performance parameters of the uninterruptible power supply at each monitoring point in real time, and comparing and analyzing the power supply performance parameters with corresponding reference range values in sequence;
when the power supply performance parameter is within the corresponding reference range value, the corresponding power supply performance parameter is assigned as a1 score, otherwise, when the power supply performance parameter is outside the corresponding reference range value, the corresponding power supply performance parameter is assigned as a2 score;
performing accumulated analysis on the assigned scores of the power supply performance parameter items to obtain a performance feedback value of the uninterruptible power supply;
when the performance feedback value is 2a1 minutes, a power supply performance good signal is generated, and when the performance feedback value is 2a2 minutes or a1+a2 minutes, a power supply performance secondary signal is generated.
Further, the specific operation steps of the analysis processing set by the circulation monitoring mechanism are as follows:
acquiring the input use time length, maintenance occupation ratio and cleaning occupation ratio in basic parameter information of the uninterruptible power supply in real time, calibrating the input use time length, maintenance occupation ratio and cleaning occupation ratio into ut, mav and cv respectively, carrying out normalized analysis on the input use time length, the maintenance occupation ratio and the cleaning occupation ratio, and obtaining a basic feedback coefficient bfc of the uninterruptible power supply according to a set formula bfc =γ1xut+γ2mav+γ3xcv, wherein γ1, γ2 and γ3 are correction factor coefficients of the input use time length, the maintenance occupation ratio and the cleaning occupation ratio respectively, and γ1, γ2 and γ3 are natural numbers larger than 0;
setting a reference threshold TT1 of a basic feedback coefficient, and comparing and analyzing the basic feedback coefficient with a preset reference threshold TT 1;
when the basic feedback coefficient is smaller than or equal to a preset reference threshold TT1, a first-order patrol period setting instruction is generated, otherwise, when the basic feedback coefficient is larger than the preset reference threshold TT1, a second-order patrol period setting instruction is generated;
according to the generated first-order inspection period setting instruction, triggering a k1 cycle monitoring mechanism, namely executing k1 running state monitoring operations on the uninterrupted power supply cycle within a specified time;
and setting an instruction according to the generated second-order inspection period, and triggering a k2 cycle monitoring mechanism, namely executing k2 running state monitoring operations on the uninterrupted power supply cycle within a specified time.
Further, the specific operation steps of the communication performance prediction analysis processing are as follows:
acquiring communication speed, communication distance and environmental impact value in communication parameter information of the uninterrupted power supply in a period of time in real time, calibrating the communication speed, the communication distance and the environmental impact value as tr, hu and ev respectively, carrying out formulated analysis on the communication speed, the communication distance and the environmental impact value, and carrying out formulated analysis according to a set formula
Obtaining a communication feedback coefficient cfc of the uninterruptible power supply;
setting a communication reference value ref of a communication feedback coefficient of the uninterruptible power supply, comparing and analyzing the communication of the communication feedback coefficient with a preset reference value ref, generating a signal with good communication performance when the communication feedback coefficient is smaller than the preset communication reference value ref, and generating a secondary signal with communication performance when the communication feedback coefficient is larger than or equal to the preset communication reference value ref.
Compared with the prior art, the invention has the beneficial effects that:
the invention carries out preliminary judgment analysis on the temperature state of each battery block in the battery pack in a threshold comparison analysis mode, carries out prediction analysis on the overall state of the battery pack of the uninterruptible power supply in a statistical calculation and duty ratio analysis mode based on the preliminary judgment analysis, and realizes the prediction judgment on the fault state of the battery pack of the uninterruptible power supply in a classification analysis and item-by-item comparison mode;
through normalization calculation and setting of a circulation monitoring mechanism, a foundation is laid for accurately analyzing the power supply performance of the uninterruptible power supply while the basic state of the uninterruptible power supply is defined, and the power supply performance state of the uninterruptible power supply is further predicted definitely by adopting the modes of data item-by-item comparison, score assignment and accumulation analysis;
the uninterrupted power supply is predicted and analyzed from the communication state layer through the modes of symbolization calibration, formulation calculation and signalization output, text early warning and corresponding maintenance operation are adopted to realize stable operation of the uninterrupted power supply, and stable power supply is provided for the Internet of things.
Drawings
For the convenience of those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
fig. 1 is a general block diagram of the system of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.
As shown in fig. 1, an uninterruptible power supply predictive maintenance system comprises a server, wherein the server is in communication connection with a data acquisition unit, a power supply performance predictive analysis unit, a communication performance predictive analysis unit, a battery pack predictive analysis unit, a fault maintenance management and control unit, a control terminal and a display terminal;
the data acquisition unit is used for acquiring the operation parameter information of the battery pack of the uninterruptible power supply, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply in the application of the Internet of things, and respectively transmitting the operation parameter information, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply to the battery pack prediction analysis unit, the power supply performance prediction analysis unit and the communication performance prediction analysis unit through the server.
When the battery pack prediction analysis unit receives the operation parameter information of the battery pack of the uninterruptible power supply, the battery pack operation prediction analysis processing is carried out according to the operation parameter information, and the specific operation process is as follows:
monitoring temperature values in running state parameter information of each battery block of the uninterruptible power supply in real time, wherein i=1, 2,3 … … n1, i represents the number of the battery blocks contained in the uninterruptible power supply, a first temperature reference interval Qu1 and a second temperature reference interval Qu2 are set, and substitution of the temperature values of each battery block of the uninterruptible power supply into the preset first temperature reference interval Qu1 and second temperature reference interval Qu2 is performed for comparison analysis, wherein the first temperature reference interval Qu1 and the second temperature reference interval Qu2 are increased in a gradient manner;
when the temperature value of the battery block is within a preset first temperature reference interval Qu1, generating an operating temperature normal signal, and when the temperature value of the battery block is within a preset second temperature reference interval Qu2, generating an operating temperature exceeding signal;
counting the occupation ratio of the battery blocks calibrated as the operation temperature exceeding signal, and obtaining the occupation ratio of the battery blocks with abnormal temperature;
the specific solving process of the abnormal temperature battery block ratio is as follows: counting the sum of the battery blocks respectively marked as an operation temperature exceeding signal, marking the sum as s1, and marking the sum of the total battery blocks as s, namely, the abnormal battery block occupation ratio = s 1/s 2 x 100%;
setting an upper limit value alpha of the duty ratio of the abnormal temperature battery block, and comparing and analyzing the duty ratio of the abnormal temperature battery block with a preset upper limit value alpha of the duty ratio, wherein the setting of a specific value of alpha is specifically set by a person skilled in the art in a specific case;
when the ratio of the abnormal temperature battery blocks is greater than or equal to a preset ratio upper limit value alpha, triggering a battery pack integral screening instruction, and performing integral fault detection and analysis processing on the battery pack, wherein the specific steps are as follows:
according to the generated battery pack integral screening instruction, acquiring charging and discharging current of the battery pack of the uninterruptible power supply in real time, generating a battery discharging state feedback signal when the charging and discharging current is less than zero, and triggering a battery discharging to cause an overheat instruction;
when the charge and discharge current is greater than zero, a battery charge state feedback signal is generated, the electric increment of the battery pack of the uninterrupted power supply in unit time is obtained according to the generated battery charge state feedback signal, a comparison threshold value TH1 of the electric increment is set, and when the electric increment of the battery pack is greater than or equal to a preset comparison threshold value TH1, a battery strong charge leading to an overheat instruction is triggered;
when the charge and discharge current is equal to zero, a battery float state feedback signal is generated, a float charge current value of the battery pack is obtained in real time according to the generated battery float state feedback signal, a comparison threshold value TH2 of the float charge current value is set, when the float charge current value of the battery pack is larger than or equal to a preset comparison threshold value TH2, an overheat instruction is triggered by triggering battery float charge, otherwise, when the float charge current value of the battery pack is smaller than the preset comparison threshold value TH2, an external short circuit inspection instruction is triggered, a voltage value of the battery pack is obtained, a comparison threshold value TH3 of the voltage value is set, and when the voltage value of the battery pack is smaller than the preset comparison threshold value TH3, an overheat instruction is triggered by triggering the external short circuit of the battery;
it should be noted that the amount of charge increase refers to the amount of charge charged by the battery pack for a certain period of time.
When the ratio of the abnormal temperature battery block is greater than or equal to the preset upper limit value alpha of the ratio, triggering a battery block monomer screening instruction, and performing battery block monomer fault detection and analysis processing, specifically:
according to the generated single battery block screening instruction, monitoring the voltage value, the internal resistance value and the discharge amount of each corresponding battery block in real time, and calibrating the voltage value, the internal resistance value and the discharge amount as uv respectively j 、rv j And dc j And normalized and analyzed according to the set formula use j =ρ1*uv j +ρ2*rv j +ρ3*dc j Obtaining the use coefficient of each battery block j Wherein j represents each battery block calibrated as an operation temperature exceeding signal, ρ1, ρ2 and ρ3 are weight factor coefficients of the voltage value, the internal resistance value and the discharge amount, respectively, and the specific values of ρ1, ρ2 and ρ3 are set specifically by those skilled in the art in specific cases, the weight factor coefficients are used for equalizing the duty ratio weights of each item of data in the formula calculation, thereby promoting the accuracy of the calculation result;
setting a use reference threshold value val of the use coefficient of each battery block, and comparing and analyzing the use coefficient of each battery block with a preset use reference threshold value val;
when the use coefficient of the battery block is larger than a preset use reference threshold value val, a serious excessive use instruction of the battery block is generated, and when the use coefficient of the battery block is smaller than or equal to the preset use reference threshold value val, a slight excessive use instruction of the battery block is generated.
And sending the generated battery discharge overheat instruction, battery strong charge overheat instruction, battery float overheat instruction, battery external short circuit overheat instruction, battery block use serious excessive instruction and battery block use slight excessive instruction to a fault maintenance management and control unit for fault maintenance operation, specifically:
when a overheat instruction caused by battery discharge is received, a proper amount of battery packs of the uninterrupted power supply are additionally arranged through the execution terminal, and meanwhile, heat dissipation equipment is additionally arranged;
when a overheat instruction caused by strong battery charging or a overheat instruction caused by floating battery charging is received, a radiating device is additionally arranged through an execution terminal;
when an overheat instruction is received due to external short-circuit of the battery, a professional maintenance technician is assigned to perform short-circuit maintenance operation on the battery of the uninterruptible power supply through an execution terminal;
when a severe excessive instruction of using the battery blocks or a slight excessive instruction of using the battery blocks is received, the number of the battery blocks is increased by executing terminal control.
When the power supply performance prediction analysis unit receives basic parameter information and power supply performance parameters of the uninterruptible power supply, power supply performance prediction analysis processing is carried out according to the basic parameter information and the power supply performance parameters, and the specific operation process is as follows:
basic parameter information of the uninterruptible power supply is obtained in real time, and the analysis processing is set by a circulation monitoring mechanism, specifically:
acquiring the input use time length, maintenance occupation ratio and cleaning occupation ratio in basic parameter information of the uninterruptible power supply in real time, calibrating the input use time length, maintenance occupation ratio and cleaning occupation ratio into ut, mav and cv respectively, carrying out normalized analysis on the input use time length, maintenance occupation ratio and cleaning occupation ratio, and obtaining a basic feedback coefficient bfc of the uninterruptible power supply according to a set formula bfc =γ1xut+γ2mav+γ3xcv, wherein γ1, γ2 and γ3 are correction factor coefficients of the input use time length, maintenance occupation ratio and cleaning occupation ratio respectively, and the γ1, γ2 and γ3 are natural numbers larger than 0, and the correction factor coefficients are used for correcting deviation of various parameters in the formula calculation process, so that more accurate parameter data are calculated;
setting a reference threshold TT1 of a basic feedback coefficient, and comparing and analyzing the basic feedback coefficient with a preset reference threshold TT 1;
when the basic feedback coefficient is smaller than or equal to a preset reference threshold TT1, a first-order patrol period setting instruction is generated, otherwise, when the basic feedback coefficient is larger than the preset reference threshold TT1, a second-order patrol period setting instruction is generated;
according to the generated first-order inspection period setting instruction, triggering a k1 cycle monitoring mechanism, namely executing k1 running state monitoring operations on the uninterrupted power supply cycle within a specified time;
according to the generated second-order inspection period setting instruction, triggering a k2 cycle monitoring mechanism, namely executing k2 running state monitoring operations on the uninterrupted power supply cycle within a specified time, wherein k1 is less than k2, and setting specific numerical values of k1 and k2 is specifically set in specific cases by a person skilled in the art;
based on a set circulation monitoring mechanism, acquiring the capacity, output voltage, output frequency, conversion time and efficiency of the power supply performance parameters of the uninterruptible power supply at each monitoring point in real time, and comparing and analyzing the power supply performance parameters with corresponding reference range values in sequence, wherein the specific steps are as follows:
setting a reference range value FA1 of capacity, setting a reference range value FA2 of output voltage, setting a reference range value FA3 of output frequency, setting a reference range value FA4 of conversion time, and setting a reference range value FA5 of efficiency;
when the capacity is within a preset reference range value FA1, the capacity parameter item of the uninterruptible power supply is assigned as a1 score, and when the capacity is outside the preset reference range value FA1, the capacity parameter item of the uninterruptible power supply is assigned as a2 score;
when the output voltage is within a preset reference range value FA2, the capacity parameter item of the uninterruptible power supply is assigned as a1 score, and when the output voltage is outside the preset reference range value FA2, the capacity parameter item of the uninterruptible power supply is assigned as a2 score;
when the output frequency is within a preset reference range value FA3, the capacity parameter item of the uninterruptible power supply is assigned as a1 score, and when the output frequency is outside the preset reference range value FA3, the capacity parameter item of the uninterruptible power supply is assigned as a2 score;
when the conversion time is within a preset reference range value FA4, the capacity parameter item of the uninterruptible power supply is assigned as a1 score, and when the conversion time is outside the preset reference range value FA4, the capacity parameter item of the uninterruptible power supply is assigned as a2 score;
when the efficiency is within a preset reference range value FA5, the capacity parameter item of the uninterruptible power supply is assigned as a1 score, and when the efficiency is outside the preset reference range value FA5, the capacity parameter item of the uninterruptible power supply is assigned as a2 score;
performing accumulated analysis on the assigned scores of the power supply performance parameter items to obtain a performance feedback value of the uninterruptible power supply;
generating a power supply performance good signal when the performance feedback value is 2a1 time division, and generating a power supply performance secondary signal when the performance feedback value is 2a2 time division or a1+a2 time division;
it should be noted that, the capacity refers to the power capacity that the uninterruptible power supply can provide, the output voltage refers to the voltage that the uninterruptible power supply obtains from the power grid, the output frequency refers to the power frequency that the uninterruptible power supply provides for the equipment, the conversion time refers to the time required by the uninterruptible power supply to switch from the standby battery pack to the working state when the main power supply fails, the shorter the conversion time is, the better the uninterruptible power supply performance is, and the efficiency refers to the ratio between the electric energy input by the uninterruptible power supply from the power grid and the electric energy output to the access equipment;
and the generated power supply performance secondary signal is sent to a fault maintenance management and control unit for fault maintenance operation, and the method is specific to the following steps:
when the secondary signal of the power supply performance is received, and a text form mode of 'the power supply performance of the uninterruptible power supply has serious fault state', the text form mode of 'the power supply maintenance processing' is needed to be sent to a display terminal for display explanation, and professional maintenance technicians are assigned to carry out battery replacement operation or battery maintenance processing on the uninterruptible power supply through a control terminal.
When the communication performance prediction analysis unit receives the communication parameter information of the uninterruptible power supply, the communication performance prediction analysis processing is carried out according to the communication parameter information, and the specific operation process is as follows:
acquiring communication speed, communication distance and environmental impact value in communication parameter information of the uninterrupted power supply in a period of time in real time, calibrating the communication speed, the communication distance and the environmental impact value as tr, hu and ev respectively, carrying out formulated analysis on the communication speed, the communication distance and the environmental impact value, and carrying out formulated analysis according to a set formula
Obtaining a communication feedback coefficient cfc of the uninterruptible power supply, wherein epsilon 1, epsilon 2 and epsilon 3 are weight factor coefficients of communication speed, communication distance and environmental impact value respectively, and epsilon 1, epsilon 2 and epsilon 3 are natural numbers larger than 0;
setting a communication reference value ref of a communication feedback coefficient of the uninterruptible power supply, comparing and analyzing the communication of the communication feedback coefficient with a preset reference value ref, generating a signal with good communication performance when the communication feedback coefficient is smaller than the preset communication reference value ref, and generating a secondary signal with communication performance when the communication feedback coefficient is larger than or equal to the preset communication reference value ref;
and sending the generated communication performance secondary signal to a fault maintenance management and control unit for fault maintenance operation, specifically:
when the secondary signal of communication performance is received, and a severe fault state exists in the communication performance of the uninterruptible power supply, a text form mode of communication maintenance processing is needed to be sent to a display terminal for display description, and professional maintenance technicians are assigned to maintain the communication of the uninterruptible power supply through a control terminal.
When the method is used, the operation parameter information of the battery pack of the uninterruptible power supply is obtained, the operation prediction analysis processing of the battery pack is carried out, the temperature state of each battery block in the battery pack is primarily judged and analyzed in a threshold comparison analysis mode, on the basis, the whole state of the battery pack of the uninterruptible power supply is also predicted and analyzed in a statistical calculation and duty ratio analysis mode, and the prediction judgment of the fault state of the battery pack of the uninterruptible power supply is realized in a classification analysis and item-by-item comparison mode;
the basic parameter information and the power supply performance parameters of the uninterruptible power supply are collected, the power supply performance prediction analysis processing is carried out, and the normalization calculation and the setting of the circulation monitoring mechanism are carried out, so that a foundation is established for accurately analyzing the power supply performance of the uninterruptible power supply while the basic state of the uninterruptible power supply is defined;
the power supply performance state of the uninterruptible power supply is further predicted definitely through the data item-by-item comparison, score assignment and accumulation analysis modes;
the communication parameter information of the uninterruptible power supply is captured, communication performance prediction analysis processing is carried out, the communication state layer is used for carrying out prediction analysis on the uninterruptible power supply by means of symbolized calibration, formulated calculation and signalized output, text early warning and corresponding maintenance operation are adopted, stable operation of the uninterruptible power supply is achieved, and stable power supply is provided for the Internet of things.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The uninterruptible power supply predictive maintenance system is characterized by comprising a server, a data acquisition unit, a power supply performance predictive analysis unit, a communication performance predictive analysis unit, a battery pack predictive analysis unit, a fault maintenance management and control unit, a control terminal and a display terminal;
the data acquisition unit is used for acquiring the operation parameter information of a battery pack of the uninterruptible power supply, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply in the application of the Internet of things, and respectively transmitting the operation parameter information, the basic parameter information and the power supply performance parameter of the uninterruptible power supply and the communication parameter information of the uninterruptible power supply to the battery pack prediction analysis unit, the power supply performance prediction analysis unit and the communication performance prediction analysis unit through the server;
the battery pack prediction analysis unit is used for receiving the operation parameter information of the battery pack of the uninterruptible power supply, performing battery pack operation prediction analysis processing, generating a battery discharge overheating instruction, a battery strong charge overheating instruction, a battery floating charging overheating instruction, a battery external short circuit overheating instruction, a battery block use serious excessive instruction and a battery block use slight excessive instruction according to the operation parameter information, and sending the battery discharge overheating instruction, the battery strong charge overheating instruction, the battery floating charging overheating instruction, the battery external short circuit overheating instruction, the battery block use serious excessive instruction and the battery block use slight excessive instruction to the fault maintenance management and control unit;
the power supply performance prediction analysis unit is used for receiving basic parameter information and power supply performance parameters of the uninterruptible power supply, performing power supply performance prediction analysis processing, generating a power supply performance good signal and a power supply performance secondary signal according to the power supply performance prediction analysis processing, and sending the power supply performance secondary signal to the fault maintenance management and control unit;
the communication performance prediction analysis unit is used for receiving communication parameter information of the uninterruptible power supply, performing communication performance prediction analysis processing, generating a signal with good communication performance and a communication performance secondary signal according to the communication parameter information, and sending the communication performance secondary signal to the fault maintenance management and control unit;
the fault maintenance control unit is used for performing fault maintenance operation on various fault feedback signals of the received uninterruptible power supply through the control terminal and performing text output early warning operation through the display terminal.
2. The uninterruptible power supply predictive maintenance system of claim 1, wherein the battery operation prediction analysis process comprises the following steps:
the method comprises the steps of monitoring temperature values in running state parameter information of each battery block of the uninterruptible power supply in real time, setting a first temperature reference interval Qu1 and a second temperature reference interval Qu2, substituting the temperature values of each battery block of the uninterruptible power supply into the preset first temperature reference interval Qu1 and second temperature reference interval Qu2, and comparing and analyzing;
when the temperature value of the battery block is within a preset first temperature reference interval Qu1, generating an operating temperature normal signal, and when the temperature value of the battery block is within a preset second temperature reference interval Qu2, generating an operating temperature exceeding signal;
counting the occupation ratio of the battery blocks calibrated as the operation temperature exceeding signal, and obtaining the occupation ratio of the battery blocks with abnormal temperature;
setting an upper limit value alpha of the duty ratio of the abnormal temperature battery block, and comparing and analyzing the duty ratio of the abnormal temperature battery block with a preset upper limit value alpha of the duty ratio;
when the ratio of the battery blocks with abnormal temperature is larger than or equal to the preset upper limit value alpha of the ratio, triggering a battery pack integral screening instruction, and performing integral fault check analysis processing on the battery pack, thereby generating a battery discharging overheat instruction, a battery strong charging overheat instruction, a battery floating overheat instruction or a battery external short circuit overheat instruction;
when the ratio of the abnormal temperature battery block is larger than or equal to the preset upper limit value alpha of the ratio, triggering a battery block monomer screening instruction, and performing battery block monomer fault check analysis processing, thereby generating a serious excessive use instruction of the battery block and a slight excessive use instruction of the battery block.
3. The uninterruptible power supply predictive maintenance system of claim 2, wherein the overall battery fault-tolerant analysis process comprises the following steps:
according to the generated battery pack integral screening instruction, acquiring charging and discharging current of the battery pack of the uninterruptible power supply in real time, generating a battery discharging state feedback signal when the charging and discharging current is less than zero, and triggering a battery discharging to cause an overheat instruction;
when the charge and discharge current is greater than zero, a battery charge state feedback signal is generated, the electric increment of the battery pack of the uninterrupted power supply in unit time is obtained according to the generated battery charge state feedback signal, a comparison threshold value TH1 of the electric increment is set, and when the electric increment of the battery pack is greater than or equal to a preset comparison threshold value TH1, a battery strong charge leading to an overheat instruction is triggered;
when the charging and discharging current is equal to zero, a battery float state feedback signal is generated, a float charging current value of the battery pack is obtained in real time according to the generated battery float state feedback signal, a comparison threshold value TH2 of the float charging current value is set, when the float charging current value of the battery pack is greater than or equal to a preset comparison threshold value TH2, the battery float charging is triggered to cause an overheat instruction, otherwise, when the float charging current value of the battery pack is smaller than the preset comparison threshold value TH2, an external short circuit inspection instruction is triggered, a voltage value of the battery pack is obtained, a comparison threshold value TH3 of the voltage value is set, and when the voltage value of the battery pack is smaller than the preset comparison threshold value TH3, the battery external short circuit is triggered to cause the overheat instruction.
4. The uninterruptible power supply predictive maintenance system of claim 2, wherein the battery block unit fault detection and analysis process comprises the following steps:
according to the generated single battery block screening instruction, monitoring the voltage value, the internal resistance value and the discharge amount of each corresponding battery block in real time, and carrying out normalization analysis on the voltage value, the internal resistance value and the discharge amount to obtain the use coefficient of each battery block;
setting a use reference threshold value val of the use coefficient of each battery block, and comparing and analyzing the use coefficient of each battery block with a preset use reference threshold value val;
when the use coefficient of the battery block is larger than a preset use reference threshold value val, a serious excessive use instruction of the battery block is generated, and when the use coefficient of the battery block is smaller than or equal to the preset use reference threshold value val, a slight excessive use instruction of the battery block is generated.
5. The uninterruptible power supply predictive maintenance system of claim 1, wherein the power performance predictive analysis process comprises the following steps:
basic parameter information of the uninterruptible power supply is obtained in real time, and the cyclic monitoring mechanism is set, analyzed and processed, so that a first-order patrol period setting instruction and a second-order patrol period setting instruction are generated;
based on a set circulation monitoring mechanism, acquiring the capacity, output voltage, output frequency, conversion time and efficiency of the power supply performance parameters of the uninterruptible power supply at each monitoring point in real time, and comparing and analyzing the power supply performance parameters with corresponding reference range values in sequence;
when the power supply performance parameter is within the corresponding reference range value, the corresponding power supply performance parameter is assigned as a1 score, otherwise, when the power supply performance parameter is outside the corresponding reference range value, the corresponding power supply performance parameter is assigned as a2 score;
performing accumulated analysis on the assigned scores of the power supply performance parameter items to obtain a performance feedback value of the uninterruptible power supply;
when the performance feedback value is 2a1 minutes, a power supply performance good signal is generated, and when the performance feedback value is 2a2 minutes or a1+a2 minutes, a power supply performance secondary signal is generated.
6. The system of claim 5, wherein the cycle monitoring mechanism is configured to analyze the following steps:
acquiring the input use time length, the maintenance occupation ratio and the cleaning occupation ratio in the basic parameter information of the uninterruptible power supply in real time, and carrying out normalized analysis on the input use time length, the maintenance occupation ratio and the cleaning occupation ratio to obtain a basic feedback coefficient of the uninterruptible power supply;
setting a reference threshold TT1 of a basic feedback coefficient, and comparing and analyzing the basic feedback coefficient with a preset reference threshold TT 1;
when the basic feedback coefficient is smaller than or equal to a preset reference threshold TT1, a first-order patrol period setting instruction is generated, otherwise, when the basic feedback coefficient is larger than the preset reference threshold TT1, a second-order patrol period setting instruction is generated;
according to the generated first-order inspection period setting instruction, triggering a k1 cycle monitoring mechanism, namely executing k1 running state monitoring operations on the uninterrupted power supply cycle within a specified time;
and setting an instruction according to the generated second-order inspection period, and triggering a k2 cycle monitoring mechanism, namely executing k2 running state monitoring operations on the uninterrupted power supply cycle within a specified time.
7. The uninterruptible power supply predictive maintenance system of claim 1, wherein the communication performance predictive analysis process comprises the following steps:
acquiring communication speed, communication distance and environmental impact value in communication parameter information of the uninterruptible power supply in a period of time in real time, and carrying out formulated analysis on the communication speed, the communication distance and the environmental impact value to obtain a communication feedback coefficient of the uninterruptible power supply;
setting a communication reference value ref of a communication feedback coefficient of the uninterruptible power supply, and comparing and analyzing the communication of the communication feedback coefficient with a preset reference value ref;
when the communication feedback coefficient is smaller than a preset communication reference value ref, a communication performance good signal is generated, and when the communication feedback coefficient is larger than or equal to the preset communication reference value ref, a communication performance secondary signal is generated.
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