CN117638834B - Intelligent voltage reduction control system and method for electric appliance - Google Patents
Intelligent voltage reduction control system and method for electric appliance Download PDFInfo
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Abstract
The invention belongs to the technical field of electrical control, and provides an intelligent voltage reduction control system and method for an electric appliance, wherein the intelligent voltage reduction control system comprises the following steps: the invention provides an overload optimization adjustment method for different types of overload appliances, which can more accurately know the optimal overload adjustment method of each type of appliance by detecting the service life of the overload appliances, thereby further improving the service life of the appliance.
Description
Technical Field
The invention belongs to the technical field of electrical control, and particularly relates to an intelligent voltage reduction control system and method for an electric appliance.
Background
With the progress of technology, the demands of people on electric appliances are increasing, and meanwhile, higher demands are also put on the safety and energy conservation of the use of the electric appliances. In the use process of the electric appliance, the electric appliance equipment can be damaged and even safety accidents can be caused due to voltage fluctuation, load change and the like. Therefore, how to realize intelligent voltage reduction control of the electrical appliance so as to ensure safe operation of the electrical appliance and energy conservation and emission reduction becomes a hot problem in the current research.
One chinese patent application with publication number CN107591281B discloses a relay voltage-reducing maintaining control circuit and control method, comprising: a relay; a controller for outputting a first control signal to the logic unit; the sampling circuit is used for outputting a sampling voltage signal to the logic unit; the logic unit is used for receiving a first control signal input by the controller and a sampling voltage signal input by the sampling circuit and outputting a confirmation signal according to the first control signal and the sampling voltage signal; the step-down holding circuit is respectively connected with the logic unit and the relay and is used for controlling the coil voltage of the relay according to the confirmation signal output by the logic unit so as to control the relay to be in a first working state of rated voltage attraction and in a second working state of step-down attraction. The invention solves the problem of poor accuracy of the confirmation signal provided by the relay step-down holding circuit in the prior art, and improves the reliability of the working state of the relay step-down holding circuit.
In the prior art, whether the electric appliance is in an overload state is judged by detecting parameters such as current, voltage and the like of the electric appliance, if the electric appliance is in the overload state, a control microprocessor outputs a corresponding control signal, voltage or current is reduced, intelligent voltage reduction control of the electric appliance is realized, influence of current and voltage control amplitude on the service life of the electric appliance is not considered when the voltage reduction control of the electric appliance is carried out, and the electric appliance can normally operate after the voltage reduction control, so that the service life of the electric appliance is greatly shortened.
Therefore, the invention provides an intelligent voltage reduction control system and method for an electric appliance.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The invention aims to provide an intelligent step-down control system and method for an electric appliance, which are used for detecting the working current information and the working voltage information of the electric appliance, judging whether the working state of the electric appliance is overloaded or not based on the detection result, analyzing overload reasons of the overload electric appliance according to the working current information and the working voltage information, classifying the overload electric appliance based on the analysis result, and providing different overload adjustment methods for different types of overload electric appliances.
The technical scheme adopted for solving the technical problems is as follows: a hybrid absolute value encoder and a position detection method thereof, comprising:
step one: acquiring working current information and working voltage information of an electric appliance, detecting the working state of the electric appliance, and judging whether the working state of the electric appliance is overloaded or not;
step two: calculating current detection parameters and voltage detection parameters of the electric appliance when the working state of the electric appliance is an overload state, judging the reason of overload of the electric appliance, and classifying the overload electric appliance;
step three: respectively carrying out overload adjustment on the overload appliances based on the classified overload appliances;
step four: detecting life information of various adjusted overload appliances, wherein the life information comprises life duration data, life difference data and life ratio data, the life duration data is expressed as actual service life duration of the adjusted overload appliances, the life difference data is expressed as the difference between the actual service life of the adjusted overload appliances and the rated service life, and the life ratio data is expressed as the ratio of the actual service life of the adjusted overload appliances to the rated service life, and the specific detection process is as follows:
s1, acquiring the actual service life time of the adjusted overload electric appliance, and marking the actual service life time as ai;
S2, obtaining the difference between the actual service life and the rated service life of the adjusted overload apparatus, and marking the difference as bi;
s3, obtaining the ratio of the actual service life to the rated service life of the adjusted overload apparatus, and marking the ratio as ci;
s4, through a formulaObtaining a service life detection coefficient di of the adjusted overload apparatus, wherein c1, c2 and c3 are preset proportional coefficients, and c1+c2+c3 is more than 0, and the service life detection coefficient and service life of the adjusted overload apparatus are obtainedThe detection coefficient threshold value is compared:
if the service life detection coefficient of the overload apparatus after adjustment is more than or equal to the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the influence degree on the service life of the overload apparatus is small, and a normal signal is generated;
if the service life detection coefficient of the overload apparatus after adjustment is less than the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the service life of the overload apparatus is greatly influenced, and an optimized signal is generated;
step five: and optimizing the adjustment method of the overload appliance based on the generated optimization signal.
The invention further adopts the technical scheme that: the process for obtaining the working current information and the working voltage information of the electric appliance comprises the following steps: and collecting a working current characteristic curve and a working voltage characteristic curve of current in the working period of the electric appliance, respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve, respectively, and correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line to obtain working current information and working voltage information of the electric appliance.
The invention further adopts the technical scheme that: the operating current information includes: operating current deviation data, operating current abnormality data and operating current abnormality duration data of the electric appliance, and operating voltage information includes: the working voltage deviation data of the electric appliance are represented as the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, the working current abnormal data are represented as the partial area of the working current characteristic curve higher than the rated current reference line, the working current abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working current characteristic curve higher than the rated current reference line, the working voltage deviation data are represented as the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, the working voltage abnormal time length data are represented as the partial area of the working voltage characteristic curve higher than the rated voltage reference line, and the working voltage abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line.
The invention further adopts the technical scheme that: the working state of the electric appliance is detected, and the specific detection process is as follows:
A110, obtaining the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, marking the vertical distance as Ai, and obtaining the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, and marking the vertical distance as Bi;
a120, acquiring a part area of the working current characteristic curve higher than the rated current reference line, marking the part area as Ci, and acquiring a part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the part area as Di;
a130, acquiring the working time length of the electric appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line, marking the working time length as Ei, and acquiring the working time length of the electric appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the working time length as Fi;
a140, by the formula:and obtaining a working state detection coefficient HK of the electric appliance, wherein s1, s2 and s3 are preset proportional coefficients, and s1+s2+s3 is more than 0.
The invention further adopts the technical scheme that: the working state of the electric appliance is detected, and the specific detection process further comprises the step of judging whether the working state of the electric appliance is overloaded or not based on the working state detection coefficient of the electric appliance:
If the working state detection coefficient HK of the electric appliance is less than or equal to the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is not an overload state;
if the working state detection coefficient HK of the electric appliance is larger than the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is indicated to be an overload state.
The invention further adopts the technical scheme that: when the working state of the electric appliance is an overload state, calculating current detection parameters and voltage detection parameters of the electric appliance, carrying out quantization processing on a vertical distance Ai between the highest point of the working current characteristic curve and the rated current reference line, a part area Ci of the working current characteristic curve which is higher than the rated current reference line, and an electric appliance working time length Ei corresponding to the part area of the working current characteristic curve which is higher than the rated current reference line, and substituting the values into a formula:obtaining a current detection parameter GU of the electric appliance, wherein +.>For correction factor, the value is 0.258964, < >>A logarithmic function of base 3;
the vertical distance Bi between the highest point of the working voltage characteristic curve and the rated voltage reference line, the partial area Di of the working voltage characteristic curve higher than the rated voltage reference line and the working time length Fi of the electrical appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line are quantized, and the values are substituted into a formula: Obtaining a voltage detection coefficient JK of the electric appliance, wherein +.>As an exponential function of the base e, +.>、/>Is a preset proportionality coefficient.
The invention further adopts the technical scheme that: judging the reason of overload of the electric appliance, classifying the overload electric appliance, and correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold value and a voltage detection parameter threshold value respectively:
if the current detection parameter GU is greater than the current parameter detection threshold value and the voltage detection parameter JK is less than or equal to the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to current, and marking the electric appliance as a first type of overload electric appliance;
if the current detection parameter GU is less than or equal to the current detection parameter threshold value and the voltage detection parameter JK is more than the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to voltage, and marking the electric appliance as a second type overload electric appliance;
if the current detection parameter GU is greater than the current detection parameter threshold value and the voltage detection parameter JK is greater than the voltage detection parameter threshold value, the electric appliance is indicated to be in overload state due to the common current and voltage, and the electric appliance is marked as a third type of overload electric appliance.
The invention further adopts the technical scheme that: based on the classified overload appliances, overload adjustment is respectively carried out on the overload appliances, and the specific adjustment process is as follows:
S101, aiming at a first class of overload appliances, sending the working time length of the appliances corresponding to the part area of the current working characteristic curve higher than the rated current reference line and the working voltage corresponding to the part area to a rheostat, wherein the rheostat carries out rheostat on the appliances according to the working time length of the appliances corresponding to the part area of the received current working characteristic curve higher than the rated current reference line, and the rheostat carries out resistance adjustment on the appliances according to the working voltage corresponding to the part area;
s102, aiming at a second class of overload appliances, sending the working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line and the working voltage corresponding to the part area to a transformer, carrying out voltage transformation on the appliances by the transformer according to the received working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and carrying out voltage adjustment on the appliances by the transformer according to the working voltage corresponding to the part area;
and S103, aiming at a third type of overload appliances, combining the adjustment methods aiming at the first type of overload appliances and the second type of overload appliances, carrying out resistance changing on the electric appliances in the working time period of the electric appliances corresponding to the part area of the current working characteristic curve which is higher than the rated current reference line, carrying out resistance adjustment on the electric appliances by the rheostat according to the working voltage corresponding to the part area, carrying out voltage changing operation on the electric appliances in the working time period corresponding to the part area of the working voltage characteristic curve which is higher than the rated voltage reference line, and carrying out voltage adjustment on the electric appliances by the transformer according to the working voltage corresponding to the part area.
The invention further adopts the technical scheme that: based on the generated optimization signal, optimizing an adjustment method of the overload electric appliance, and substituting a current detection parameter threshold value of the electric appliance as a result into a formula:the method comprises the steps of obtaining vertical distances between the highest points of a plurality of groups of corresponding working current characteristic curves and rated current reference lines, the partial areas of the working current characteristic curves higher than the rated current reference lines, and the working time lengths of electric appliances corresponding to the partial areas of the working current characteristic curves higher than the rated current reference lines; substituting the voltage detection parameter threshold value of the electrical appliance as a result into a formula:the method comprises the steps of obtaining vertical distances between the highest points of a plurality of groups of corresponding working voltage characteristic curves and rated voltage reference lines, the partial areas of the working voltage characteristic curves higher than the rated voltage reference lines, and the working time lengths of electric appliances corresponding to the partial areas of the working voltage characteristic curves higher than the rated voltage reference lines;
setting constraint conditions, and reserving obtained data conforming to the constraint conditions, wherein the constraint conditions are as follows: the part area of the working current characteristic curve higher than the rated current reference line=the vertical distance between the highest point of the working current characteristic curve and the rated current reference line×the working time length of the electrical appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line;
The part area of the working voltage characteristic curve higher than the rated voltage reference line=the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line×the working time length of the electrical appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line;
in the retained obtained data, selecting a current corresponding to the vertical distance between the highest point of the maximum working current characteristic curve and the rated current reference line as an optimized adjustment current, selecting a voltage corresponding to the vertical distance between the highest point of the maximum working voltage characteristic curve and the rated voltage reference line as an optimized adjustment voltage, and aiming at the first type of overload appliances, performing real-time varistor according to the optimized adjustment current by using a varistor;
aiming at the second class of overload appliances, the transformer performs real-time transformation according to the optimized adjustment voltage;
aiming at a third type of overload appliances, the adjustment methods aiming at the first type of overload appliances and the second type of overload appliances are combined, the electric appliances are subjected to variable resistance according to the working time length of the electric appliances corresponding to the part area of the current working characteristic curve higher than the rated current reference line, the rheostat performs real-time variable resistance according to the optimized adjustment current, the electric appliances are subjected to variable-voltage working according to the working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and the transformer performs real-time variable-voltage according to the optimized adjustment voltage.
An intelligent buck control system for an electrical appliance, the system comprising:
the collecting and constructing module is used for collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of the electric appliance, and respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve as rated current reference lines and rated voltage reference lines;
the information acquisition module is used for correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line respectively to acquire working current information and working voltage information of the electric appliance;
the working detection module is used for detecting the working state of the electric appliance according to the working current information and the working voltage information of the electric appliance;
the overload analysis module is used for correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold and a voltage detection parameter threshold respectively, judging the reason of overload of the electrical appliance based on the comparison result, and classifying the overload electrical appliance based on the judgment result;
The overload adjustment module is used for providing different overload adjustment methods for different types of overload appliances;
the service life detection module is used for detecting the influence degree of the overload electric appliance on the service life of the overload electric appliance after the overload electric appliance is adjusted according to the service life information of the overload electric appliance after the overload electric appliance is adjusted;
and the overload optimization module provides an overload optimization adjustment method aiming at different types of overload appliances according to the influence degree of the overload appliances on the service life of the overload appliances after the overload optimization module adjusts the overload appliances.
The beneficial effects of the invention are as follows:
1. the invention relates to an intelligent step-down control system and method for an electric appliance, which are characterized in that an operating current characteristic curve and an operating voltage characteristic curve of current are acquired in the working period of the electric appliance, the rated current and the rated voltage of the electric appliance are respectively used as rated current reference lines and rated voltage reference lines in the operating current characteristic curve and the operating voltage characteristic curve, the operating current characteristic curve and the operating voltage characteristic curve of the electric appliance are respectively compared with the rated current reference lines and the rated voltage reference lines correspondingly to obtain operating current information and operating voltage information of the electric appliance, the operating state of the electric appliance is detected based on the obtained operating current information and the operating voltage information of the electric appliance, whether the operating state of the electric appliance is overloaded or not is judged based on the detection result, and aiming at the overload electric appliance, the invention judges whether the electric appliance is overloaded or not by analyzing the overload reasons of the overload electric appliances, classifies the electric appliance according to the overload reasons and provides different overload adjustment methods for the overload electric appliances of different types by analyzing the overload reasons of the overload electric appliances, thereby realizing the use safety of the electric appliance, and the overload adjustment can prevent the electric appliance from running in the overload state for a long time, thereby prolonging the service life of the electric appliance, and the problem of potential equipment can be found and solved in advance by analyzing and classifying the overload reasons, so that the problem can be solved more quickly and efficiently, the production pause or other serious consequences caused by equipment faults can be avoided, and the overload electric appliance can be adjusted in time if the overload electric appliance can be adjusted in time, the energy waste can be effectively reduced.
2. The intelligent voltage reduction control system and method for the electrical appliance detects the service life information of various types of adjusted overload electrical appliances, calculates the service life detection coefficient of the adjusted overload electrical appliances based on the service life information of the various types of adjusted overload electrical appliances, compares the service life detection coefficient of the adjusted overload electrical appliances with a service life detection coefficient threshold value, detects the influence degree of the overload electrical appliances on the service life of the overload electrical appliances after the overload adjustment, and provides an overload optimization adjustment method for different types of overload electrical appliances according to the influence degree of the overload electrical appliances after the overload adjustment.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method according to a first embodiment of the invention;
FIG. 2 is a graph showing the operating current characteristics in accordance with the first embodiment of the present invention;
FIG. 3 is a graph of operating voltage characteristics for one embodiment of the present invention;
fig. 4 is a system block diagram of a third embodiment of the present invention.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1, the intelligent voltage reduction control method for an electric appliance according to the embodiment of the invention includes:
step one: collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of an electric appliance, and respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve as rated current reference lines and rated voltage reference lines, wherein the specific reference is shown in fig. 2;
wherein, the working period of the electric appliance is expressed as the working period of the electric appliance in one day;
step two: and correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with a rated current reference line and a rated voltage reference line respectively to obtain working current information and working voltage information of the electric appliance, wherein the working current information comprises: operating current deviation data, operating current abnormality data and operating current abnormality duration data of the electric appliance, and operating voltage information includes: the working voltage deviation data of the electric appliance are represented as the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, the working current abnormal data are represented as the partial area of the working current characteristic curve higher than the rated current reference line, the working current abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working current characteristic curve higher than the rated current reference line, the working voltage deviation data are represented as the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, the working voltage abnormal data are represented as the partial area of the working voltage characteristic curve higher than the rated voltage reference line, and the working voltage abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line;
The working state of the electric appliance is detected based on the working current information and the working voltage information of the electric appliance, and the specific detection process is as follows:
a110, obtaining the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, marking the vertical distance as Ai, and obtaining the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, and marking the vertical distance as Bi;
a120, acquiring a part area of the working current characteristic curve higher than the rated current reference line, marking the part area as Ci, and acquiring a part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the part area as Di;
a130, acquiring the working time length of the electric appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line, marking the working time length as Ei, and acquiring the working time length of the electric appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the working time length as Fi;
a140, by the formula:obtaining a working state detection coefficient HK of the electric appliance, wherein s1, s2 and s3 are preset proportional coefficients, and s1+s2+s3 is more than 0;
and A150, comparing the working state detection coefficient of the electric appliance with a working state detection coefficient threshold value of the electric appliance, and judging whether the working state of the electric appliance is an overload state or not, wherein the specific judging process is as follows:
If the working state detection coefficient HK of the electric appliance is less than or equal to the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is not an overload state;
if the working state detection coefficient HK of the electric appliance is larger than the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is represented as an overload state;
step three: when the working state of the electric appliance is an overload state, calculating a current detection parameter and a voltage detection parameter of the electric appliance based on the obtained working current information and working voltage information, correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold and a voltage detection parameter threshold respectively, judging the reason of overload of the electric appliance based on a comparison result, classifying the overload electric appliance based on a judgment result, wherein the specific detection process is as follows:
the method comprises the steps of carrying out quantization processing on the electric appliance working time length Ei corresponding to the vertical distance Ai between the highest point of the working current characteristic curve and the rated current reference line, the part area Ci of the working current characteristic curve higher than the rated current reference line and the part area of the working current characteristic curve higher than the rated current reference line, and substituting the values into a formula:obtaining a current detection parameter GU of the electric appliance, wherein +. >For correction factor, the value is 0.258964, < >>A logarithmic function of base 3;
the vertical distance Bi between the highest point of the working voltage characteristic curve and the rated voltage reference line, the partial area Di of the working voltage characteristic curve higher than the rated voltage reference line and the working time length Fi of the electrical appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line are quantized, and the values are substituted into a formula:obtaining a voltage detection coefficient JK of the electric appliance, wherein +.>As an exponential function of the base e, +.>、/>Is a preset proportionality coefficient;
the current detection parameter and the voltage detection parameter are respectively compared with a current detection parameter threshold value and a voltage detection parameter threshold value correspondingly, and the reason of overload of the electrical appliance is judged based on the comparison result, wherein the specific judgment process is as follows:
if the current detection parameter GU is greater than the current parameter detection threshold value and the voltage detection parameter JK is less than or equal to the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to current, and marking the electric appliance as a first type of overload electric appliance;
if the current detection parameter GU is less than or equal to the current detection parameter threshold value and the voltage detection parameter JK is more than the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to voltage, and marking the electric appliance as a second type overload electric appliance;
If the current detection parameter GU is greater than the current detection parameter threshold value and the voltage detection parameter JK is greater than the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to common current and voltage, and marking the electric appliance as a third type of overload electric appliance;
step four: based on the classified overload appliances, overload adjustment is respectively carried out on the overload appliances, and the specific adjustment process is as follows:
s101, aiming at the first class of overload appliances, based on a current working characteristic curve and a working voltage characteristic curve, sending the working time length of the appliance corresponding to the part area of the current working characteristic curve higher than a rated current reference line and the working voltage corresponding to the part area to a rheostat, wherein the rheostat performs resistance changing on the appliance according to the working time length of the appliance corresponding to the part area of the received current working characteristic curve higher than the rated current reference line, and performs resistance adjustment on the appliance according to the working voltage corresponding to the part area;
the varistor starts and ends varistor operation according to the operation time of the electric appliance corresponding to the part area of the current operation characteristic curve higher than the rated current reference line, and the resistance is adjusted in real time, specifically according to the corresponding operation voltage change, wherein the real-time adjustment resistance=real-time operation voltage/rated current;
S102, aiming at a second class of overload appliances, based on an operating voltage characteristic curve of the appliances, transmitting the operating time length corresponding to the part area of the operating voltage characteristic curve higher than a rated voltage reference line and the operating voltage corresponding to the part area to a transformer, performing voltage transformation operation on the appliances by the transformer according to the received operating time length corresponding to the part area of the operating voltage characteristic curve higher than the rated voltage reference line, and performing voltage adjustment on the appliances by the transformer according to the operating voltage corresponding to the part area;
the transformer starts and ends the voltage transformation according to the working time length of the electric appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and the voltage is adjusted in real time, specifically according to the corresponding working voltage change, wherein the real-time adjusting voltage=actual working voltage-rated voltage;
s103, aiming at a third type of overload appliances, combining adjustment methods aiming at the first type of overload appliances and the second type of overload appliances, carrying out resistance changing on the electric appliances in the working time period of the electric appliances corresponding to the part area of the current working characteristic curve which is higher than the rated current reference line, carrying out resistance adjustment on the electric appliances by the rheostat according to the working voltage corresponding to the part area, carrying out voltage changing operation on the electric appliances in the working time period corresponding to the part area of the working voltage characteristic curve which is higher than the rated voltage reference line, and carrying out voltage adjustment on the electric appliances by the transformer according to the working voltage corresponding to the part area;
The working principle of the embodiment of the invention is as follows: the method comprises the steps of collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of an electric appliance, respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve of the electric appliance as the rated current reference line and the rated voltage reference line, respectively correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line to obtain working current information and working voltage information of the electric appliance, detecting the working state of the electric appliance based on the obtained working current information and the working voltage information of the electric appliance, judging whether the working state of the electric appliance is overloaded or not based on the detection result, analyzing the overload reasons of the electric appliance according to the working current information and the working voltage information of the electric appliance, and judging whether the electric appliance is overloaded or not according to different types of overload adjustment methods provided by the overload appliances.
Example two
Based on the first embodiment, the intelligent voltage reduction control method for the electric appliance provided by the embodiment of the invention comprises the following steps:
detecting life information of various adjusted overload appliances, wherein the life information comprises life duration data, life difference data and life ratio data, the life duration data is expressed as actual service life duration of the adjusted overload appliances, the life difference data is expressed as the difference between the actual service life of the adjusted overload appliances and the rated service life, and the life ratio data is expressed as the ratio of the actual service life of the adjusted overload appliances to the rated service life, and the specific detection process is as follows:
s1, acquiring the actual service life time of the adjusted overload electric appliance, and marking the actual service life of the electric appliance as ai;
s2, obtaining the difference between the actual service life and the rated service life of the adjusted overload electric appliance, and marking the difference between the actual service life and the rated service life of the electric appliance as bi;
s3, obtaining the ratio of the actual service life to the rated service life of the adjusted overload electric appliance, and marking the ratio of the actual service life to the rated service life of the electric appliance as ci;
s4, through a formulaObtaining a service life detection coefficient di of the adjusted overload apparatus, wherein c1, c2 and c3 are preset proportionality coefficients, and c1+c2+c3 is more than 0;
Comparing the service life detection coefficient of the overload appliance after adjustment with a service life detection coefficient threshold value, and judging the influence degree of the overload appliance on the service life after overload adjustment by the adjustment method;
if the service life detection coefficient of the overload apparatus after adjustment is more than or equal to the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the influence degree on the service life of the overload apparatus is small, and a normal signal is generated;
if the service life detection coefficient of the overload apparatus after adjustment is less than the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the service life of the overload apparatus is greatly influenced, and an optimized signal is generated;
based on the generated optimization signal, the adjustment method of the overload appliance is optimized, and the specific optimization process is as follows:
substituting the current detection parameter threshold value of the electric appliance as a result into a formula:the method comprises the steps of obtaining vertical distances between the highest points of a plurality of groups of corresponding working current characteristic curves and rated current reference lines, the partial areas of the working current characteristic curves higher than the rated current reference lines, and the working time lengths of electric appliances corresponding to the partial areas of the working current characteristic curves higher than the rated current reference lines;
setting constraint conditions on the electric appliance working time lengths corresponding to the obtained vertical distances between the highest points of the multiple groups of corresponding working current characteristic curves and the rated current reference line, the part areas of the working current characteristic curves higher than the rated current reference line and the part areas of the working current characteristic curves higher than the rated current reference line, wherein the constraint conditions are as follows:
The part area of the working current characteristic curve higher than the rated current reference line=the vertical distance between the highest point of the working current characteristic curve and the rated current reference line×the working time length of the electrical appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line;
the vertical distance between the highest point of the corresponding working current characteristic curve and the rated current datum line, the partial area of the working current characteristic curve higher than the rated current datum line and the working time length of the electric appliance corresponding to the partial area of the working current characteristic curve higher than the rated current datum line which meet the constraint condition are reserved, and the current corresponding to the vertical distance between the highest point of the reserved multiple groups of working current characteristic curves and the rated current datum line, the partial area of the working current characteristic curve higher than the rated current datum line and the working time length of the electric appliance corresponding to the partial area of the working current characteristic curve higher than the rated current datum line are selected as the optimized adjustment current;
the same principle as the above-mentioned principle of obtaining the optimized adjustment current, the voltage detection parameter threshold value of the electric appliance is substituted as a result into the formula: Obtaining the vertical distance between the highest point of the working voltage characteristic curves corresponding to a plurality of groups and the rated voltage reference line, the partial area of the working voltage characteristic curve higher than the rated voltage reference line, and the working time length of the electric appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line, and setting constraint conditions: the vertical distance between the highest point of the operating voltage characteristic curve and the rated voltage reference line, the partial area of the operating voltage characteristic curve and the rated voltage reference line, and the operating voltage are all in accordance with the constraint conditionsThe working time length of the electric appliance corresponding to the part area of the characteristic curve higher than the rated voltage reference line is reserved, and the voltage corresponding to the vertical distance between the highest point of the maximum working voltage characteristic curve and the rated voltage reference line is selected as the optimized adjustment voltage;
aiming at the first type of overload appliances, the rheostat performs real-time rheostatic according to the optimized and adjusted current;
Aiming at the second class of overload appliances, the transformer performs real-time transformation according to the optimized adjustment voltage;
aiming at a third type of overload appliances, the adjustment methods aiming at the first type of overload appliances and the second type of overload appliances are combined, the electric appliances are subjected to resistance changing according to the working time length of the electric appliances corresponding to the part area of the current working characteristic curve higher than the rated current reference line, the rheostat performs real-time resistance changing according to the optimized adjustment current, the electric appliances are subjected to voltage changing according to the working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and the transformer performs real-time voltage changing according to the optimized adjustment voltage;
the working principle of the embodiment of the invention is as follows: the method comprises the steps of detecting service life information of various overload appliances after adjustment, calculating service life detection coefficients of the overload appliances after adjustment based on the service life information of the overload appliances after adjustment, comparing the service life detection coefficients of the overload appliances after adjustment with service life detection coefficient threshold values, detecting the influence degree of the service life of the overload appliances after the overload appliances pass through the overload adjustment, and providing an overload optimization adjustment method for different types of overload appliances according to the influence degree of the service life of the overload appliances after the overload appliances pass through the overload adjustment.
Example III
As shown in fig. 4, an intelligent voltage reduction control system for an electrical appliance according to an embodiment of the present invention includes:
the collecting and constructing module is used for collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of the electric appliance, and taking rated current and rated voltage of the electric appliance as reference values respectively in the working current characteristic curve and the working voltage characteristic curve as rated current reference lines and rated voltage reference lines respectively;
the information acquisition module is used for correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line respectively to acquire working current information and working voltage information of the electric appliance, and the information acquisition module is also used for acquiring service life information of the overload electric appliance;
the working detection module is used for detecting the working state of the electric appliance according to the working current information and the working voltage information of the electric appliance;
the overload analysis module is used for correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold and a voltage detection parameter threshold respectively, judging the reason of overload of the electrical appliance based on the comparison result, and classifying the overload electrical appliance based on the judgment result;
The overload adjustment module is used for providing different overload adjustment methods for different types of overload appliances;
the service life detection module is used for detecting the influence degree of the overload electric appliance on the service life of the overload electric appliance after the overload electric appliance is adjusted according to the service life information of the overload electric appliance after the overload electric appliance is adjusted;
and the overload optimization module provides an overload optimization adjustment method aiming at different types of overload appliances according to the influence degree of the overload optimization module on the service life of the overload appliances after the overload appliances are subjected to overload adjustment.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. An intelligent voltage reduction control method for an electric appliance is characterized in that: comprising the following steps:
step one: acquiring working current information and working voltage information of an electric appliance, detecting the working state of the electric appliance, and judging whether the working state of the electric appliance is overloaded or not;
Step two: calculating current detection parameters and voltage detection parameters of the electric appliance when the working state of the electric appliance is an overload state, judging the reason of overload of the electric appliance, and classifying the overload electric appliance;
step three: respectively carrying out overload adjustment on the overload appliances based on the classified overload appliances;
step four: detecting life information of various adjusted overload appliances, wherein the life information comprises life duration data, life difference data and life ratio data, the life duration data is expressed as actual service life duration of the adjusted overload appliances, the life difference data is expressed as the difference between the actual service life of the adjusted overload appliances and the rated service life, and the life ratio data is expressed as the ratio of the actual service life of the adjusted overload appliances to the rated service life, and the specific detection process is as follows:
s1, acquiring the actual service life time of the adjusted overload electric appliance, and marking the actual service life time as ai;
s2, obtaining the difference between the actual service life and the rated service life of the adjusted overload apparatus, and marking the difference as bi;
s3, obtaining the ratio of the actual service life to the rated service life of the adjusted overload apparatus, and marking the ratio as ci;
S4, by the formula di=Obtaining a service life detection coefficient di of the adjusted overload apparatus, wherein c1, c2 and c3 are preset proportionality coefficients, and c1+c2+c3 is more than 0, and comparing the service life detection coefficient of the adjusted overload apparatus with a service life detection coefficient threshold value:
if the service life detection coefficient of the overload apparatus after adjustment is more than or equal to the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the influence degree on the service life of the overload apparatus is small, and a normal signal is generated;
if the service life detection coefficient of the overload apparatus after adjustment is less than the service life detection coefficient threshold value, the overload apparatus is subjected to overload adjustment, and the service life of the overload apparatus is greatly influenced, and an optimized signal is generated;
step five: optimizing an adjustment method of the overload appliance based on the generated optimization signal;
the process for obtaining the working current information and the working voltage information of the electric appliance comprises the following steps: collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of an electric appliance, respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve, respectively, and correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line to obtain working current information and working voltage information of the electric appliance;
The operating current information includes: operating current deviation data, operating current abnormality data and operating current abnormality duration data of the electric appliance, and operating voltage information includes: the working voltage deviation data of the electric appliance are represented as the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, the working current abnormal data are represented as the partial area of the working current characteristic curve higher than the rated current reference line, the working current abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working current characteristic curve higher than the rated current reference line, the working voltage deviation data are represented as the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, the working voltage abnormal data are represented as the partial area of the working voltage characteristic curve higher than the rated voltage reference line, and the working voltage abnormal time length data are represented as the working time length of the electric appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line;
the working state of the electric appliance is detected, and the specific detection process is as follows:
A110, obtaining the vertical distance between the highest point of the working current characteristic curve and the rated current reference line, marking the vertical distance as Ai, and obtaining the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line, and marking the vertical distance as Bi;
a120, acquiring a part area of the working current characteristic curve higher than the rated current reference line, marking the part area as Ci, and acquiring a part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the part area as Di;
a130, acquiring the working time length of the electric appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line, marking the working time length as Ei, and acquiring the working time length of the electric appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and marking the working time length as Fi;
a140, by the formula:obtaining a working state detection coefficient HK of the electric appliance, wherein s1, s2 and s3 are preset proportional coefficients, and s1+s2+s3 is more than 0;
the working state of the electric appliance is detected, and the specific detection process further comprises the step of judging whether the working state of the electric appliance is overloaded or not based on the working state detection coefficient of the electric appliance:
if the working state detection coefficient HK of the electric appliance is less than or equal to the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is not an overload state;
If the working state detection coefficient HK of the electric appliance is larger than the working state detection coefficient threshold value of the electric appliance, the working state of the electric appliance is represented as an overload state;
when the working state of the electric appliance is an overload state, calculating current detection parameters and voltage detection parameters of the electric appliance, carrying out quantization processing on a vertical distance Ai between the highest point of the working current characteristic curve and the rated current reference line, a part area Ci of the working current characteristic curve which is higher than the rated current reference line, and an electric appliance working time length Ei corresponding to the part area of the working current characteristic curve which is higher than the rated current reference line, and substituting the values into a formula:obtaining a current detection parameter GU of the electric appliance, wherein +.>For correction factor, the value is 0.258964, < >>A logarithmic function of base 3;
the vertical distance Bi between the highest point of the working voltage characteristic curve and the rated voltage reference line, the partial area Di of the working voltage characteristic curve higher than the rated voltage reference line and the working time length Fi of the electrical appliance corresponding to the partial area of the working voltage characteristic curve higher than the rated voltage reference line are quantized, and the values are substituted into a formula:obtaining a voltage detection coefficient JK of the electric appliance, wherein +.>As an exponential function of the base e, +. >、/>Is a pre-preparationSetting a proportionality coefficient;
judging the reason of overload of the electric appliance, classifying the overload electric appliance, and correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold value and a voltage detection parameter threshold value respectively:
if the current detection parameter GU is greater than the current parameter detection threshold value and the voltage detection parameter JK is less than or equal to the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to current, and marking the electric appliance as a first type of overload electric appliance;
if the current detection parameter GU is less than or equal to the current detection parameter threshold value and the voltage detection parameter JK is more than the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to voltage, and marking the electric appliance as a second type overload electric appliance;
if the current detection parameter GU is greater than the current detection parameter threshold value and the voltage detection parameter JK is greater than the voltage detection parameter threshold value, indicating that the electric appliance is in overload state due to common current and voltage, and marking the electric appliance as a third type of overload electric appliance;
based on the classified overload appliances, overload adjustment is respectively carried out on the overload appliances, and the specific adjustment process is as follows:
s101, aiming at a first class of overload appliances, sending the working time length of the appliances corresponding to the part area of the current working characteristic curve higher than the rated current reference line and the working voltage corresponding to the part area to a rheostat, wherein the rheostat carries out rheostat on the appliances according to the working time length of the appliances corresponding to the part area of the received current working characteristic curve higher than the rated current reference line, and the rheostat carries out resistance adjustment on the appliances according to the working voltage corresponding to the part area;
S102, aiming at a second class of overload appliances, sending the working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line and the working voltage corresponding to the part area to a transformer, carrying out voltage transformation on the appliances by the transformer according to the received working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and carrying out voltage adjustment on the appliances by the transformer according to the working voltage corresponding to the part area;
s103, aiming at a third type of overload appliances, combining adjustment methods aiming at the first type of overload appliances and the second type of overload appliances, carrying out resistance changing on the electric appliances in the working time period of the electric appliances corresponding to the part area of the current working characteristic curve which is higher than the rated current reference line, carrying out resistance adjustment on the electric appliances by the rheostat according to the working voltage corresponding to the part area, carrying out voltage changing operation on the electric appliances in the working time period corresponding to the part area of the working voltage characteristic curve which is higher than the rated voltage reference line, and carrying out voltage adjustment on the electric appliances by the transformer according to the working voltage corresponding to the part area;
based on the generated optimization signal, optimizing an adjustment method of the overload electric appliance, and substituting a current detection parameter threshold value of the electric appliance as a result into a formula: The method comprises the steps of obtaining vertical distances between the highest points of a plurality of groups of corresponding working current characteristic curves and rated current reference lines, the partial areas of the working current characteristic curves higher than the rated current reference lines, and the working time lengths of electric appliances corresponding to the partial areas of the working current characteristic curves higher than the rated current reference lines; substituting the voltage detection parameter threshold value of the electrical appliance as a result into a formula:the method comprises the steps of obtaining vertical distances between the highest points of a plurality of groups of corresponding working voltage characteristic curves and rated voltage reference lines, the partial areas of the working voltage characteristic curves higher than the rated voltage reference lines, and the working time lengths of electric appliances corresponding to the partial areas of the working voltage characteristic curves higher than the rated voltage reference lines;
setting constraint conditions, and reserving obtained data conforming to the constraint conditions, wherein the constraint conditions are as follows: the part area of the working current characteristic curve higher than the rated current reference line=the vertical distance between the highest point of the working current characteristic curve and the rated current reference line×the working time length of the electrical appliance corresponding to the part area of the working current characteristic curve higher than the rated current reference line;
the part area of the working voltage characteristic curve higher than the rated voltage reference line=the vertical distance between the highest point of the working voltage characteristic curve and the rated voltage reference line×the working time length of the electrical appliance corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line;
In the retained obtained data, selecting a current corresponding to the vertical distance between the highest point of the maximum working current characteristic curve and the rated current reference line as an optimized adjustment current, selecting a voltage corresponding to the vertical distance between the highest point of the maximum working voltage characteristic curve and the rated voltage reference line as an optimized adjustment voltage, and aiming at the first type of overload appliances, performing real-time varistor according to the optimized adjustment current by using a varistor;
aiming at the second class of overload appliances, the transformer performs real-time transformation according to the optimized adjustment voltage;
aiming at a third type of overload appliances, the adjustment methods aiming at the first type of overload appliances and the second type of overload appliances are combined, the electric appliances are subjected to variable resistance according to the working time length of the electric appliances corresponding to the part area of the current working characteristic curve higher than the rated current reference line, the rheostat performs real-time variable resistance according to the optimized adjustment current, the electric appliances are subjected to variable-voltage working according to the working time length corresponding to the part area of the working voltage characteristic curve higher than the rated voltage reference line, and the transformer performs real-time variable-voltage according to the optimized adjustment voltage.
2. An intelligent step-down control system for an electrical appliance, characterized in that: the system for performing the method of claim 1, the system comprising:
The collecting and constructing module is used for collecting a working current characteristic curve and a working voltage characteristic curve of current in a working period of the electric appliance, and respectively taking rated current and rated voltage of the electric appliance as reference values in the working current characteristic curve and the working voltage characteristic curve as rated current reference lines and rated voltage reference lines;
the information acquisition module is used for correspondingly comparing the working current characteristic curve and the working voltage characteristic curve of the electric appliance with the rated current reference line and the rated voltage reference line respectively to acquire working current information and working voltage information of the electric appliance, and the information acquisition module is also used for acquiring service life information of the overload electric appliance;
the working detection module is used for detecting the working state of the electric appliance according to the working current information and the working voltage information of the electric appliance;
the overload analysis module is used for correspondingly comparing the current detection parameter and the voltage detection parameter with a current detection parameter threshold and a voltage detection parameter threshold respectively, judging the reason of overload of the electrical appliance based on the comparison result, and classifying the overload electrical appliance based on the judgment result;
The overload adjustment module is used for providing different overload adjustment methods for different types of overload appliances;
the service life detection module is used for detecting the influence degree of the overload electric appliance on the service life of the overload electric appliance after the overload electric appliance is adjusted according to the service life information of the overload electric appliance after the overload electric appliance is adjusted;
and the overload optimization module provides an overload optimization adjustment method aiming at different types of overload appliances according to the influence degree of the overload appliances on the service life of the overload appliances after the overload optimization module adjusts the overload appliances.
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