CN115378123B - Bus duct power supply safety early warning monitoring system based on data analysis - Google Patents
Bus duct power supply safety early warning monitoring system based on data analysis Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 49
- 238000007405 data analysis Methods 0.000 title claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910052802 copper Inorganic materials 0.000 claims abstract description 89
- 239000010949 copper Substances 0.000 claims abstract description 89
- 238000004458 analytical method Methods 0.000 claims abstract description 58
- 238000013021 overheating Methods 0.000 claims abstract description 13
- 238000012512 characterization method Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 238000011418 maintenance treatment Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 10
- 238000013499 data model Methods 0.000 claims description 7
- 206010037660 Pyrexia Diseases 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The invention relates to the technical field of bus ducts, and discloses a bus duct power supply safety early warning monitoring system based on data analysis, which comprises a cloud server, a cloud server communication connection data acquisition unit, a characterization performance monitoring unit, a connector lug overheat monitoring unit, a copper bar overheat monitoring unit, a safety early warning feedback unit and a display terminal, wherein the bus duct power supply safety early warning monitoring mode is used for solving the problems that the prior bus duct power supply safety early warning monitoring mode cannot early warn the bus duct overheat fault, and the clear judgment of the bus duct power supply safety is difficult to realize, so that the safety performance of the bus duct power supply is difficult to ensure; the invention is based on a data analysis mode, carries out clear judgment and analysis on the power supply safety state of the bus duct from different layers, and realizes the early warning feedback of the overheating fault of the bus duct, thereby avoiding the reduction of the power supply level of the bus duct caused by the temperature rise of the fault and improving the power supply safety performance of the bus duct.
Description
Technical Field
The invention relates to the technical field of bus ducts, in particular to a bus duct power supply safety early warning and monitoring system based on data analysis.
Background
With the advent of modern engineering facilities and equipment, the power consumption of various industries is rapidly increased, especially the appearance of numerous high-rise buildings and large-scale factory workshops, the traditional cables serving as power transmission wires cannot meet the requirements in a large-current transmission system, the parallel use of multiple cables brings various inconveniences to the field installation construction connection, a bus duct is a novel power distribution wire, the bus duct is a closed metal device formed by copper and aluminum bus columns and is used for distributing larger power for each element of a dispersion system, and the electric wires and cables are increasingly replaced in the indoor low-voltage power transmission trunk engineering project, so that the realization of high-efficiency early warning monitoring on the power supply safety of the bus duct is very important;
however, the existing mode of monitoring the bus duct power supply safety precaution is difficult to monitor the change condition of the bus duct temperature at an early stage, the bus duct overheat fault cannot be early warned, and the clear judgment of the bus duct power supply safety is difficult to realize, so that the safety performance of the bus duct power supply is difficult to ensure, and great hidden danger is brought to a power supply system;
in order to solve the above-mentioned defect, a technical scheme is provided.
Disclosure of Invention
The invention aims to solve the problems that the prior bus duct power supply safety early warning and monitoring mode is difficult to monitor the change condition of the bus duct temperature in an early stage, the early warning of the bus duct overheat fault is difficult to realize, the clear judgment of the bus duct power supply safety is difficult to realize, so that the safety performance of the bus duct power supply is difficult to ensure, the power supply system is provided with great hidden danger, the power supply safety state of the bus duct is clearly judged and analyzed from different layers based on a data analysis mode, the early warning feedback of the bus duct overheat fault is realized, the bus duct power supply grade is prevented from being reduced due to the fault temperature rise, the bus duct power supply safety performance is improved, and the bus duct power supply safety early warning and monitoring system based on the data analysis is provided.
The aim of the invention can be achieved by the following technical scheme:
the bus duct power supply safety early warning monitoring system based on data analysis comprises a cloud server, wherein the cloud server is in communication connection with a data acquisition unit, a characterization performance monitoring unit, a connector lug overheat monitoring unit, a copper bar overheat monitoring unit, a safety early warning feedback unit and a display terminal;
the data acquisition unit is used for acquiring working state information of the bus duct, state information of a bus joint in the bus duct and state information of a conductive copper bar in the bus duct, and respectively transmitting the working state information, the state information and the state information to the characterization performance monitoring unit, the connector lug overheat monitoring unit and the copper bar overheat monitoring unit through the cloud server;
the characteristic performance monitoring unit is used for receiving the working state information of the bus duct, judging, analyzing and processing the performance of the bus duct, generating a bus duct power supply performance stable signal and a bus duct power supply performance unstable signal according to the working state information, and sending the bus duct power supply performance stable signal and the bus duct power supply performance unstable signal to the safety early warning feedback unit through the cloud server;
the connector lug overheat monitoring unit is used for receiving state information of a bus connector in the bus duct, analyzing and processing a connector lug temperature overheat fault, generating a bus connector power supply normal signal, a bus connector temperature slight overheat signal, a bus connector temperature moderate overheat signal and a bus connector temperature severe overheat signal according to the state information, and sending the signals to the safety early warning feedback unit through the cloud server;
the copper bar overheat monitoring unit is used for receiving state information of the conductive copper bar in the bus duct, analyzing and processing copper bar temperature overheat faults, generating a conductive copper bar temperature normal signal, a conductive copper bar middle overheat fault signal and a conductive copper bar heavy overheat fault signal according to the state information, and sending the signals to the safety early warning feedback unit through the cloud server;
the safety early warning feedback unit is used for receiving various types of data judging signals, performing early warning analysis processing, and sending the signals to the display terminal in a text word description mode for early warning display.
Further, the specific operation steps of the bus duct performance judging, analyzing and processing are as follows:
the appearance damage value, the bending degree value and the insulation value of the bus duct are obtained in real time, and are respectively calibrated into zs, qz and su, and are subjected to formulated analysis according to the formulaObtaining the performance coefficient of the bus duct, wherein e1, e2 and e3 are weight factor coefficients of an appearance damage value, a bending degree value and an insulation value respectively, and e2 is more than e1 and more than e3 is more than 0, and e1+e2+e3=6.3;
and setting a comparison reference threshold Y1 of the performance coefficient of the bus duct, generating bus duct power supply performance unstable signals when the performance coefficient is smaller than or equal to a preset comparison reference threshold Y1, and generating bus duct power supply performance stable signals when the performance coefficient is larger than the preset comparison reference threshold Y1.
Further, the specific operation steps of the temperature overheat fault analysis processing of the connector lug are as follows:
the resistance value and the bolt fastening value of each bus joint in the bus duct are obtained in real time, and are respectively calibrated into dz and sg, and are subjected to formula analysis according to a formulaObtaining a power supply coefficient, wherein f1 and f2 are correction factor coefficients of a resistance magnitude and a bolt fastening magnitude respectively, and f1 and f2 are natural numbers larger than 0;
setting gradient reference intervals Q1 and Q2 of power supply coefficients, and substituting the power supply coefficients into preset gradient reference intervals Q1 and Q2 for comparison analysis, wherein the gradient reference intervals Q1 and Q2 are in gradient decreasing;
generating a bus connector power supply normal signal when the power supply coefficient is substituted into a preset gradient reference interval Q1, and generating a bus connector power supply abnormal signal when the power supply coefficient is substituted into a preset gradient reference interval Q2;
according to the abnormal power supply signals of the bus connector, the temperature values of the bus connectors in the bus duct are obtained in real time to carry out data gradient comparison analysis, and accordingly a slight overheat signal of the temperature of the bus connector, a moderate overheat signal of the temperature of the bus connector and a severe overheat signal of the temperature of the bus connector are generated.
Further, the specific operation steps of the data gradient comparison analysis are as follows:
comparing and analyzing the temperature magnitude of each busbar joint with set gradient temperature reference limit values X1 and X2, wherein the gradient temperature reference limit values X1 and X2 are increased in a gradient manner;
when the temperature magnitude of the bus joint is smaller than or equal to the gradient temperature reference limit value X1, a slight overheat signal of the bus joint temperature is generated, when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X1 and smaller than the gradient temperature reference limit value X2, a moderate overheat signal of the bus joint temperature is generated, and when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X2, a severe overheat signal of the bus joint temperature is generated.
Further, the specific operation steps of the analysis treatment of the overheat fault of the copper bar temperature are as follows:
acquiring the temperature magnitude of each conductive copper bar in the bus duct in real time, setting a temperature upper limit reference threshold X3 of the temperature magnitude of each conductive copper bar, and comparing and analyzing the temperature magnitude of each conductive copper bar with the temperature upper limit reference threshold X3;
generating a conductive copper bar temperature abnormal signal when the temperature magnitude of the conductive copper bar is greater than or equal to the upper temperature limit reference threshold value X3, otherwise, generating a conductive copper bar temperature normal signal when the temperature magnitude of the conductive copper bar is less than the upper temperature limit reference threshold value X3;
according to the abnormal temperature signal of the conductive copper bar, equally dividing the internal area of the bus duct into n volume spaces, obtaining the moisture content value of each volume space for average analysis, and calibrating the moisture content value of each volume space as sc n According to the formulaObtaining a mean value damping coefficient;
obtaining the moisture content value of the internal area of the bus duct and the current value of each conductive copper bar in the bus duct in real time, and calibrating the moisture content value and the current value as dl i And carrying out mean analysis on the obtained product, and according to a formulaObtaining a mean current coefficient, wherein i= {1,2,3 … … m };
and capturing the average moisture coefficient and the average current coefficient of the same unit time period, and performing data model judgment, analysis and processing to generate a conductive copper bar middle temperature overheat fault signal and a conductive copper bar severe temperature overheat fault signal.
Further, the specific operation steps of the data model judgment analysis processing are as follows:
taking time as an abscissa, taking a mean value moisture coefficient and a mean value current coefficient as an ordinate, and establishing a two-dimensional dynamic rectangular coordinate system based on the time;
drawing each average value moisture coefficient and each average value current coefficient in a unit time period on a two-dimensional dynamic rectangular coordinate system in a dot curve drawing mode, and respectively naming the two curves as a moisture curve and a current curve;
analyzing trend between the damp curve and the current curve on the two-dimensional dynamic rectangular coordinate system in a unit time period, generating a conductive copper bar severe temperature overheat fault signal when the current curve rises along with rising of the damp curve, and generating a conductive copper bar moderate temperature overheat fault signal when the current curve falls along with falling of the damp curve.
Further, the specific operation steps of the early warning analysis processing are as follows:
when receiving the bus duct power supply performance stable signal or the bus connector power supply normal signal or the conductive copper bar temperature normal signal, generating no early warning signal;
when a signal of unstable power supply performance of the bus duct is received, a text description word of 'the bus duct is low in safety power supply performance level and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when a slight overheat signal of the temperature of the bus connector is received, a text description word of' the slight overheat phenomenon of the bus connector in the bus duct exists and power supply monitoring is required to be followed is sent to a display terminal for display description;
when receiving a moderate overheat signal of the bus joint temperature, sending a text description word of 'the bus joint in the bus duct has obvious overheat phenomenon and needs to be subjected to safety maintenance treatment' to a display terminal for display description;
when a severe overheating signal of the bus joint temperature is received, a text description word of 'the bus joint in the bus duct has serious overheating phenomenon and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when a conductive copper bar middle temperature overheat fault signal is received, a text description word of ' the conductive copper bar in the bus duct has a slight temperature overheat phenomenon ' which needs to follow up power supply monitoring ' is sent to a display terminal for display description;
when a severe temperature overheat fault signal of the conductive copper bar is received, a text description word of the severe temperature overheat phenomenon of the conductive copper bar in the bus duct, which is needed to be subjected to safety maintenance treatment, is sent to a display terminal for display description.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention utilizes the symbolized calibration, formulated analysis and threshold value setting comparison modes, thereby laying a foundation for determining the bus duct power supply safety judgment analysis while realizing the judgment analysis of the bus duct overall performance operation level;
(2) According to the invention, the data layer-by-layer analysis and the signaling output mode are utilized, so that the early warning analysis of the power supply state of the bus connector in the bus duct is further realized while the overheat fault of the bus connector is defined, and the control of the power supply safety of the bus duct is promoted;
(3) According to the invention, by means of data analysis and model image analysis, accurate early warning analysis is further realized on the overheat fault state of the conductive copper bar of the bus duct, based on the data analysis, the power supply safety state of the bus duct is definitely judged and analyzed from different layers, and real-time early warning is performed in a text word description mode, so that the problem of power supply grade reduction of the bus duct due to fault temperature rise is avoided while the early warning of the fault temperature rise is realized, and the power supply safety performance of the bus duct is improved.
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, the bus duct power supply safety early warning monitoring system based on data analysis comprises a cloud server, wherein the cloud server is in communication connection with a data acquisition unit, a characterization performance monitoring unit, a connector lug overheat monitoring unit, a copper bar overheat monitoring unit, a safety early warning feedback unit and a display terminal;
the data acquisition unit is used for acquiring working state information of the bus duct, state information of a bus joint in the bus duct and state information of the conductive copper bar in the bus duct, and respectively transmitting the working state information, the state information and the state information to the characterization performance monitoring unit, the connector lug overheat monitoring unit and the copper bar overheat monitoring unit through the cloud server;
when the characterization performance monitoring unit receives the working state information of the bus duct, the bus duct performance judgment analysis processing is carried out according to the working state information, and the specific operation process is as follows:
the appearance damage value, the bending degree value and the insulation value of the bus duct are obtained in real time, and are respectively calibrated into zs, qz and su, and are subjected to formulated analysis according to the formulaThe method comprises the steps of obtaining the performance coefficient of a bus duct, wherein e1, e2 and e3 are weight factor coefficients of an appearance damage value, a tortuosity degree value and an insulation value respectively, and e2 is more than e1 and more than e3 and more than 0, and e1+e2+e3=6.3, wherein the weight factor coefficients are used for balancing the duty ratio weight of each item of data in formula calculation, so that the accuracy of a calculation result is promoted;
the appearance damage value is used for indicating the data value of the whole appearance damage degree of the bus duct, when the appearance damage value is larger, the whole appearance damage degree of the bus duct is more serious, otherwise, when the appearance damage value is smaller, the whole appearance damage degree of the bus duct is less;
when large fault current passes through the bus duct, electric power and arc light are generated, and the bus duct generates bending under the action effect of the electric power and the arc light, so that the bending degree value refers to the data value of the bending degree generated in the bus duct, and when the appearance value of the bending degree value is larger, the bending degree generated in the bus duct is larger, and the power supply stability and safety performance of the bus duct are further lower;
the insulation value refers to a data value of the insulation capacity of the insulation partition board in the bus duct, and when the expression value of the insulation value is larger, the insulation capacity of the insulation partition board in the bus duct is more strengthened, so that the higher the power supply stability and safety performance of the bus duct are further described;
it is also noted that, when the appearance damage value and the bending degree value are smaller, and the insulation value is larger, the coefficient of performance of the bus duct is larger, so that the power supply performance level presented by the bus duct is further described as safer;
setting a comparison reference threshold Y1 of the performance coefficient of the bus duct, generating bus duct power supply performance unstable signals when the performance coefficient is smaller than or equal to a preset comparison reference threshold Y1, and generating bus duct power supply performance stable signals when the performance coefficient is larger than the preset comparison reference threshold Y1;
the generated bus duct power supply performance stable signal and bus duct power supply performance unstable signal are sent to a safety early warning feedback unit through a cloud server to be subjected to early warning analysis and processing, and the specific operation process is as follows:
when a bus duct power supply performance stable signal is received, no early warning signal is generated;
when a bus duct power supply performance unstable signal is received, a text description word of 'the bus duct is low in safety power supply performance level and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when the terminal overheat monitoring unit receives the state information of the bus connector in the bus duct, the terminal temperature overheat fault analysis processing is carried out according to the state information, and the specific operation process is as follows:
the resistance value and the bolt fastening value of each bus joint in the bus duct are obtained in real time, and are respectively calibrated into dz and sg, and are subjected to formula analysis according to a formulaObtaining a power supply coefficient, wherein f1 and f2 are correction factor coefficients of a resistance magnitude and a bolt fastening magnitude respectively, and f1 and f2 are natural numbers larger than 0, and the correction factor coefficients are used for correcting deviation of various parameters in a formula calculation process, so that more accurate parameter data are calculated;
it should be noted that, each bus bar joint in the bus duct is locked by the connecting bolt, so as to ensure the conductivity of the bus bar joint, when the connecting bolt is not locked, the on-resistance of the bus bar joint is increased, when the on-resistance of the bus bar joint is increased, the high current in the bus duct is generated, and the high current passes through the bus bar joint to generate overheat phenomenon, so that the bus bar joint is burnt out to cause the power supply failure of the bus duct;
the resistance value refers to the on-resistance of the bus connector, when the expression value of the resistance value is larger, the on-resistance of the bus connector is larger, the bolt fastening value refers to the data value of the locking degree of the connecting bolt, and when the expression value of the bolt fastening value is larger, the locking degree of the connecting bolt is higher, so that the normal power supply of the bus connector can be ensured;
setting gradient reference intervals Q1 and Q2 of power supply coefficients, and substituting the power supply coefficients into preset gradient reference intervals Q1 and Q2 for comparison analysis, wherein the gradient reference intervals Q1 and Q2 are in gradient decreasing;
generating a bus connector power supply normal signal when the power supply coefficient is substituted into a preset gradient reference interval Q1, and generating a bus connector power supply abnormal signal when the power supply coefficient is substituted into a preset gradient reference interval Q2;
according to the abnormal power supply signals of the bus connectors, the temperature values of the bus connectors in the bus duct are obtained in real time to carry out data gradient comparison analysis, and the specific operation process is as follows:
comparing and analyzing the temperature magnitude of each busbar joint with set gradient temperature reference limit values X1 and X2, wherein the gradient temperature reference limit values X1 and X2 are increased in a gradient manner;
generating a slight overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is smaller than or equal to the gradient temperature reference limit value X1, generating a moderate overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X1 and smaller than the gradient temperature reference limit value X2, and generating a severe overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X2;
the generated normal power supply signal of the bus connector, the slight overheat signal of the temperature of the bus connector, the moderate overheat signal of the temperature of the bus connector and the severe overheat signal of the temperature of the bus connector are sent to a safety early warning feedback unit through a cloud server to be subjected to early warning analysis and processing, and the specific operation process is as follows:
when a normal power supply signal of the bus connector is received, no early warning signal is generated;
when a slight overheat signal of the temperature of the bus connector is received, a text description word of' the slight overheat phenomenon of the bus connector in the bus duct exists and power supply monitoring is required to be followed is sent to a display terminal for display description;
when receiving a moderate overheat signal of the bus joint temperature, sending a text description word of 'the bus joint in the bus duct has obvious overheat phenomenon and needs to be subjected to safety maintenance treatment' to a display terminal for display description;
when a severe overheating signal of the bus joint temperature is received, a text description word of 'the bus joint in the bus duct has serious overheating phenomenon and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when the copper bar overheat monitoring unit receives the state information of the conductive copper bar in the bus duct, the copper bar temperature overheat fault analysis processing is carried out according to the state information, and the specific operation process is as follows:
acquiring the temperature magnitude of each conductive copper bar in the bus duct in real time, setting a temperature upper limit reference threshold X3 of the temperature magnitude of each conductive copper bar, and comparing and analyzing the temperature magnitude of each conductive copper bar with the temperature upper limit reference threshold X3;
generating a conductive copper bar temperature abnormal signal when the temperature magnitude of the conductive copper bar is greater than or equal to the upper temperature limit reference threshold value X3, otherwise, generating a conductive copper bar temperature normal signal when the temperature magnitude of the conductive copper bar is less than the upper temperature limit reference threshold value X3;
according to the abnormal temperature signal of the conductive copper bar, willThe internal area of the bus duct is equally divided into n volume spaces, the moisture content value of each volume space is obtained for average analysis, and the moisture content value of each volume space is calibrated to be sc n According to the formulaObtaining a mean value damping coefficient;
obtaining the moisture content value of the internal area of the bus duct and the current value of each conductive copper bar in the bus duct in real time, and calibrating the moisture content value and the current value as dl i And carrying out mean analysis on the obtained product, and according to a formulaObtaining a mean current coefficient, wherein i= {1,2,3 … … m }, i represents each conductive copper bar, and m is a positive integer greater than or equal to 1;
capturing the average moisture coefficient and the average current coefficient of the same unit time period, and performing data model judgment analysis processing, wherein the specific operation process is as follows:
taking time as an abscissa, taking a mean value moisture coefficient and a mean value current coefficient as an ordinate, and establishing a two-dimensional dynamic rectangular coordinate system based on the time;
drawing each average value moisture coefficient and each average value current coefficient in a unit time period on a two-dimensional dynamic rectangular coordinate system in a dot curve drawing mode, and respectively naming the two curves as a moisture curve and a current curve;
analyzing trend between a damp curve and a current curve on a two-dimensional dynamic rectangular coordinate system in a unit time period, generating a severe temperature overheat fault signal when the current curve rises along with rising of the damp curve, and generating a slight temperature overheat fault signal when the current curve falls along with falling of the damp curve;
it should be noted that when the humidity degree in the bus duct is high, the resistance of the conductive copper bar is reduced, and under a certain voltage condition, the conductive capability of the conductive copper bar is enhanced, and a high current fault is easy to generate, so that when the expression value of the mean value humidity coefficient is high and the mean value current coefficient is high, the safety level of the conductive copper bar is lower;
the generated normal temperature signal of the conductive copper bar, the severe overheat fault signal of the conductive copper bar and the severe overheat fault signal of the conductive copper bar are sent to a safety early warning feedback unit through a cloud server to be subjected to early warning analysis and processing, and the specific operation process is as follows:
when a signal of normal temperature of the conductive copper bar is received, no early warning signal is generated;
when a conductive copper bar middle temperature overheat fault signal is received, a text description word of ' the conductive copper bar in the bus duct has a slight temperature overheat phenomenon ' which needs to follow up power supply monitoring ' is sent to a display terminal for display description;
when a severe temperature overheat fault signal of the conductive copper bar is received, a text description word of the severe temperature overheat phenomenon of the conductive copper bar in the bus duct, which is needed to be subjected to safety maintenance treatment, is sent to a display terminal for display description.
The formulas are all formulas obtained by collecting a large amount of data for software simulation and selecting a formula close to a true value, and coefficients in the formulas are set by a person skilled in the art according to actual conditions;
the formula is as follows:；
collecting a plurality of groups of sample data by a person skilled in the art and setting a corresponding weight factor coefficient for each group of sample data; substituting the set weight factor coefficient and the acquired sample data into a formula, forming a binary one-time equation set by any two formulas, screening the calculated coefficient and taking an average value to obtain values of e1, e2 and e3 which are respectively 2,3 and 1.3;
the size of the coefficient is a specific numerical value obtained by quantizing each parameter, so that the subsequent comparison is convenient, and the size of the coefficient depends on the number of sample data and the corresponding weight factor coefficient is preliminarily set for each group of sample data by a person skilled in the art; as long as the proportional relation between the parameter and the quantized value is not affected.
When the bus duct power supply safety judgment and analysis system is used, the bus duct performance judgment and analysis processing is carried out by acquiring the working state information of the bus duct, and a symbolized calibration, formulated analysis and threshold value setting and comparison mode is utilized, so that the judgment and analysis of the overall performance operation level of the bus duct are realized, and a foundation is laid for the clear bus duct power supply safety judgment and analysis;
the method has the advantages that the overheat fault analysis processing of the temperature of the connector lug is carried out by acquiring the state information of the bus connector in the bus duct, and the mode of layer-by-layer analysis and signalized output of data is utilized, so that the overheat fault of the bus connector is defined, the early warning analysis of the power supply state of the bus connector in the bus duct is further realized, and the control of the power supply safety of the bus duct is promoted;
the method has the advantages that the overheat fault analysis processing of the temperature of the copper bar is carried out by capturing the state information of the conductive copper bar in the bus duct, the accurate early warning analysis of the overheat fault state of the conductive copper bar of the bus duct is further realized by utilizing the data analysis and model image analysis modes, the power supply safety state of the bus duct is definitely judged and analyzed from different layers based on the data analysis mode, and the real-time early warning is carried out by the text word description mode, so that the problem of power supply grade reduction of the bus duct due to fault temperature rise is avoided while the early warning of the fault temperature rise of the bus duct is realized, and the power supply safety performance of the bus duct is improved.
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 (1)
1. The bus duct power supply safety early warning monitoring system based on data analysis comprises a cloud server and is characterized in that the cloud server is in communication connection with a data acquisition unit, a characterization performance monitoring unit, a connector lug overheat monitoring unit, a copper bar overheat monitoring unit, a safety early warning feedback unit and a display terminal;
the data acquisition unit is used for acquiring working state information of the bus duct, state information of a bus joint in the bus duct and state information of a conductive copper bar in the bus duct, and respectively transmitting the working state information, the state information and the state information to the characterization performance monitoring unit, the connector lug overheat monitoring unit and the copper bar overheat monitoring unit through the cloud server;
the characteristic performance monitoring unit is used for receiving the working state information of the bus duct, judging, analyzing and processing the performance of the bus duct, generating a bus duct power supply performance stable signal and a bus duct power supply performance unstable signal according to the working state information, and sending the bus duct power supply performance stable signal and the bus duct power supply performance unstable signal to the safety early warning feedback unit through the cloud server;
the connector lug overheat monitoring unit is used for receiving state information of a bus connector in the bus duct, analyzing and processing a connector lug temperature overheat fault, generating a bus connector power supply normal signal, a bus connector temperature slight overheat signal, a bus connector temperature moderate overheat signal and a bus connector temperature severe overheat signal according to the state information, and sending the signals to the safety early warning feedback unit through the cloud server;
the copper bar overheat monitoring unit is used for receiving state information of the conductive copper bar in the bus duct, analyzing and processing copper bar temperature overheat faults, generating a conductive copper bar temperature normal signal, a conductive copper bar middle overheat fault signal and a conductive copper bar heavy overheat fault signal according to the state information, and sending the signals to the safety early warning feedback unit through the cloud server;
the safety early warning feedback unit is used for receiving various types of data judging signals, carrying out early warning analysis processing and sending the signals to the display terminal in a text word description mode for early warning display;
the specific operation steps of bus duct performance judgment, analysis and treatment are as follows:
obtaining the appearance damage value, the tortuosity degree value and the insulation value of the bus duct in real timeThe margin values are respectively marked as zs, qz and su, and are subjected to formulated analysis according to the formulaObtaining the performance coefficient of the bus duct, wherein e1, e2 and e3 are weight factor coefficients of an appearance damage value, a bending degree value and an insulation value respectively, and e2 is more than e1 and more than e3 is more than 0, and e1+e2+e3=6.3;
setting a comparison reference threshold Y1 of the performance coefficient of the bus duct, generating bus duct power supply performance unstable signals when the performance coefficient is smaller than or equal to a preset comparison reference threshold Y1, and generating bus duct power supply performance stable signals when the performance coefficient is larger than the preset comparison reference threshold Y1;
the specific operation steps of the temperature overheat fault analysis processing of the connector lug are as follows:
the resistance value and the bolt fastening value of each bus joint in the bus duct are obtained in real time, and are respectively calibrated into dz and sg, and are subjected to formula analysis according to a formulaObtaining a power supply coefficient, wherein f1 and f2 are correction factor coefficients of a resistance magnitude and a bolt fastening magnitude respectively, and f1 and f2 are natural numbers larger than 0;
setting gradient reference intervals Q1 and Q2 of power supply coefficients, and substituting the power supply coefficients into preset gradient reference intervals Q1 and Q2 for comparison analysis, wherein the gradient reference intervals Q1 and Q2 are in gradient decreasing;
generating a bus connector power supply normal signal when the power supply coefficient is substituted into a preset gradient reference interval Q1, and generating a bus connector power supply abnormal signal when the power supply coefficient is substituted into a preset gradient reference interval Q2;
according to the abnormal power supply signals of the bus joints, acquiring the temperature values of the bus joints in the bus duct in real time for data gradient comparison analysis, and generating a slight overheat signal of the temperature of the bus joints, a moderate overheat signal of the temperature of the bus joints and a severe overheat signal of the temperature of the bus joints according to the data gradient comparison analysis;
the specific operation steps of the data gradient comparison analysis are as follows:
comparing and analyzing the temperature magnitude of each busbar joint with set gradient temperature reference limit values X1 and X2, wherein the gradient temperature reference limit values X1 and X2 are increased in a gradient manner;
generating a slight overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is smaller than or equal to the gradient temperature reference limit value X1, generating a moderate overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X1 and smaller than the gradient temperature reference limit value X2, and generating a severe overheating signal of the bus joint temperature when the temperature magnitude of the bus joint is larger than the gradient temperature reference limit value X2;
the specific operation steps of the analysis and treatment of the overheat fault of the copper bar temperature are as follows:
acquiring the temperature magnitude of each conductive copper bar in the bus duct in real time, setting a temperature upper limit reference threshold X3 of the temperature magnitude of each conductive copper bar, and comparing and analyzing the temperature magnitude of each conductive copper bar with the temperature upper limit reference threshold X3;
generating a conductive copper bar temperature abnormal signal when the temperature magnitude of the conductive copper bar is greater than or equal to the upper temperature limit reference threshold value X3, otherwise, generating a conductive copper bar temperature normal signal when the temperature magnitude of the conductive copper bar is less than the upper temperature limit reference threshold value X3;
dividing the internal area of the bus duct into n volume spaces in an equivalent manner according to the abnormal temperature signals of the conductive copper bars, and obtaining the moisture content value of each volume space for average analysis to obtain an average moisture content coefficient;
acquiring the moisture content value of the internal area of the bus duct and the current value of each conductive copper bar in the bus duct in real time, and carrying out mean analysis on the moisture content value and the current value to obtain a mean current coefficient;
capturing the average moisture coefficient and the average current coefficient of the same unit time period, and performing data model judgment, analysis and processing to generate a conductive copper bar middle temperature overheat fault signal and a conductive copper bar severe temperature overheat fault signal;
the specific operation steps of the data model judgment analysis processing are as follows:
taking time as an abscissa, taking a mean value moisture coefficient and a mean value current coefficient as an ordinate, and establishing a two-dimensional dynamic rectangular coordinate system based on the time;
drawing each average value moisture coefficient and each average value current coefficient in a unit time period on a two-dimensional dynamic rectangular coordinate system in a dot curve drawing mode, and respectively naming the two curves as a moisture curve and a current curve;
analyzing trend trends between a damp curve and a current curve on a two-dimensional dynamic rectangular coordinate system in a unit time period, generating a conductive copper bar severe temperature overheat fault signal when the current curve rises along with rising of the damp curve, and generating a conductive copper bar moderate temperature overheat fault signal when the current curve falls along with falling of the damp curve;
the specific operation steps of the early warning analysis processing are as follows:
when receiving the bus duct power supply performance stable signal or the bus connector power supply normal signal or the conductive copper bar temperature normal signal, generating no early warning signal;
when a signal of unstable power supply performance of the bus duct is received, a text description word of 'the bus duct is low in safety power supply performance level and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when a slight overheat signal of the temperature of the bus connector is received, a text description word of' the slight overheat phenomenon of the bus connector in the bus duct exists and power supply monitoring is required to be followed is sent to a display terminal for display description;
when receiving a moderate overheat signal of the bus joint temperature, sending a text description word of 'the bus joint in the bus duct has obvious overheat phenomenon and needs to be subjected to safety maintenance treatment' to a display terminal for display description;
when a severe overheating signal of the bus joint temperature is received, a text description word of 'the bus joint in the bus duct has serious overheating phenomenon and needs to be subjected to safety maintenance treatment' is sent to a display terminal for display description;
when a conductive copper bar middle temperature overheat fault signal is received, a text description word of ' the conductive copper bar in the bus duct has a slight temperature overheat phenomenon ' which needs to follow up power supply monitoring ' is sent to a display terminal for display description;
when a severe temperature overheat fault signal of the conductive copper bar is received, a text description word of the severe temperature overheat phenomenon of the conductive copper bar in the bus duct, which is needed to be subjected to safety maintenance treatment, is sent to a display terminal for display description.
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| CN116176280B (en) * | 2023-04-14 | 2023-10-24 | 广东绿通新能源电动车科技股份有限公司 | Fault early warning system for new energy sightseeing trolley |
| CN117220223B (en) * | 2023-08-13 | 2024-04-16 | 湖北利亚达电力科技有限公司 | High-safety intensive bus duct |
| CN117214630A (en) * | 2023-09-25 | 2023-12-12 | 镇江加勒智慧电力科技股份有限公司 | Bus duct insulation performance evaluation method and system |
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