CN116224208A - Error detection method, system and storage medium of electric energy meter - Google Patents
Error detection method, system and storage medium of electric energy meter Download PDFInfo
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Abstract
The application discloses an error detection method, an error detection system and a storage medium of an electric energy meter, and relates to the technical field of electric meter testing, wherein the method comprises the following steps: under the condition that the reference electric energy meter and the test electric energy meter work on a reference power supply, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric meter data; under the condition that the test electric energy meter is in high temperature and high humidity, the reference electric energy meter and the test electric energy meter are read according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter, second test data are obtained, and the second test data are converted to obtain test electric meter data. According to the error detection method of the electric energy meter, an error detection device is not required to be added, and the detection cost is reduced.
Description
Technical Field
The present disclosure relates to the field of electric meter testing technologies, and in particular, to an error detection method, system, and storage medium for an electric energy meter.
Background
Along with the technical requirements of electric operators on electronic electric energy meters becoming higher and higher, the requirements on reliability tests of the electric energy meters are becoming more and more strict, and in the process of accelerating the reliability tests, the metering electric energy and metering errors of the electric energy meters need to be checked every day, so that each electric energy meter needs to be correspondingly provided with one error detection device, but under the condition that the number of test samples is increased, the number of the error detection devices also needs to be increased, and the error detection devices are required to be placed in an aging room, so that the requirements on performance are very high, the cost is very high, and the cost for accelerating the reliability tests is high. How to reduce the cost of reliability detection is a problem to be solved at present.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the error detection method, the error detection system and the storage medium of the electric energy meter can obtain metering error information of the electric energy meter in a timing sequence mode, an error detection device is not required to be added, and detection cost is reduced.
In order to solve the technical problems, the application provides the following technical scheme:
an embodiment of a first aspect of the present application provides an error detection method of an electric energy meter, including:
Acquiring the gauge numbers of a plurality of reference electric energy meters and the gauge numbers of a plurality of test electric energy meters;
setting the freezing time of the heliostat and the automatic meter reading time according to preset requirements;
under the condition that the reference electric energy meter and the test electric energy meter are both operated on a reference power supply, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric meter data;
under the condition that the test electric energy meter is in high temperature and high humidity, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test electric meter data;
calculating the reference ammeter data and the test ammeter data to obtain the daily use electric energy change rate;
and comparing the daily use electric energy change rate with a preset ammeter change rate threshold value to obtain an error detection result.
The error detection method of the electric energy meter according to the embodiment of the first aspect of the application has at least the following beneficial effects: according to the error detection method of the electric energy meter, the reference electric meter data and the test electric meter data can be obtained in a timing sequence mode according to the daily freezing time, the automatic meter reading time, the meter number of the test electric energy meter and the meter number of the reference electric energy meter, whether the electric energy meter is abnormal or not is judged directly according to the obtained reference electric meter data and the test electric meter data, an error detection device is not required to be additionally arranged, and detection cost is reduced.
According to some embodiments of the first aspect of the present application, the first test data includes a first real-time clock, a first freeze time, and a first day usage power, and the reference meter data includes a first time difference and a first day usage power variation;
the method for obtaining the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter, obtaining first test data, and converting the first test data to obtain reference electric energy meter data comprises the following steps:
reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a first real-time clock, a first freezing time and first daily electric energy;
And converting the first real-time clock, the first freezing time and the first daily used electric energy to obtain a first time difference and a first daily used electric energy variable quantity, wherein the first time difference is the difference between the time of a test electric energy meter under the condition that a reference power supply is on and the time of the reference electric energy meter, and the first daily used electric energy variable quantity is the difference between the first daily used electric energy and the first daily used electric energy obtained by the last day freezing time.
According to some embodiments of the first aspect of the present application, the reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter, to obtain first test data, and converting the first test data, to obtain reference electric energy meter data, further includes:
summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily electric energy and the first daily electric energy variation, and generating a reference electric meter report.
According to some embodiments of the first aspect of the present application, the summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily used electric energy and the first daily used electric energy variation, and after generating the reference electric meter report, further includes:
and under the condition that the reference power supply is on, when the reference ammeter data are continuously acquired at least twice, starting a high-temperature high-humidity state so as to enable the test ammeter to work in the high-temperature high-humidity state.
According to some embodiments of the first aspect of the present application, the second test data includes a second real-time clock, a second freezing time, and a second day usage power, and the test meter data includes a second time difference and a second day usage power variation;
the step of reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test ammeter data, wherein the step of obtaining the test ammeter data comprises the following steps:
Reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a second real-time clock, a second freezing time and second daily electric energy;
converting the second real-time clock, the second freezing time and the second daily use electric energy to obtain a second time difference and a second daily use electric energy variation; the second time difference is the difference between the time of the reference electric energy meter and the time of the test electric energy meter in a high-temperature high-humidity state, and the change amount of the electric energy used on the second day is the difference between the electric energy used on the second day and the electric energy used on the second day obtained by the freezing time on the last day.
According to some embodiments of the first aspect of the present application, the calculating the reference electricity meter data and the test electricity meter data to obtain a daily electricity consumption rate includes:
and dividing the change amount of the electric energy used in the second day and the electric energy used in the first day to obtain the change rate of the electric energy used in the day.
According to some embodiments of the first aspect of the present application, the reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter, to obtain second test data, and converting the second test data, after obtaining test electric meter data, further includes:
Obtaining daily electricity consumption metering errors according to the daily electricity consumption change rate, wherein the daily electricity consumption metering errors are the daily electricity consumption change rate;
summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the second time difference, the second freezing time, the second daily electric energy change amount, the daily electric energy change rate and the daily electric energy metering error, and generating a test electric meter report.
According to some embodiments of the first aspect of the present application, comparing the daily usage power change rate with a preset ammeter change rate threshold value to obtain an error detection result includes:
when the daily use electric energy change rate is smaller than the electric meter change rate threshold, the error detection result is that the test electric energy meter has errors;
and when the daily use electric energy change rate is larger than the electric meter change rate threshold, the error detection result is that the test electric energy meter works normally.
According to some embodiments of the first aspect of the present application, the comparing the daily usage power change rate with a preset ammeter change rate threshold value, after obtaining an error detection result, further includes one of the following:
When the time of the reference electric energy meter is abnormal, interrupting the detection process;
when the time of the test electric energy meter is abnormal, interrupting the detection process;
when the first time difference is abnormal, interrupting the detection process;
when the second time difference is abnormal, interrupting the detection process;
when the daily electricity consumption metering error is abnormal, interrupting the detection process;
when the first time difference and the second time difference are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal;
and when the first-day used electric energy variation and the second-day used electric energy variation are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal.
An embodiment of a second aspect of the present application provides an error detection system of an electric energy meter, including:
at least one memory;
at least one processor;
at least one program;
the program is stored in the memory, and the processor executes at least one of the programs to implement:
an error detection method for an electric energy meter according to any one of the first aspects of the present application.
Embodiments of a third aspect of the present application provide a computer-readable storage medium storing a computer-executable signal for performing:
An error detection method for an electric energy meter according to any one of the first aspects of the present application.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a main flow chart of an error detection method of an electric energy meter according to some embodiments of the present disclosure;
FIG. 2 is a sub-flowchart of an error detection method of an electric energy meter according to some embodiments of the present disclosure;
FIG. 3 is a sub-flowchart of an error detection method of an electric energy meter according to some embodiments of the present disclosure;
FIG. 4 is a sub-flowchart of an error detection method of an electric energy meter according to some embodiments of the present disclosure;
fig. 5 is a schematic system scheme of an error detection method of an electric energy meter according to some embodiments of the present application;
fig. 6 is a block diagram of an error detection system of a power meter according to some embodiments of the present application.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different from that in the flowchart. The terms and the like in the description and in the claims, and in the above-described drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the description of the present application, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
The reliability test is an experiment performed to measure, quantify, or classify a reliability index or property of an item, and is different from the environmental test, but the reliability test includes the environmental test. The accelerated reliability test is a test method for enabling a tested product to be in a high-temperature and high-humidity environment and accelerating performance aging test to estimate service life characteristics of the product, the test requires a large number of samples to be tested (the standard requires 150 samples in total, each group is divided into 5 groups, 30 samples), the test time is long (the test environments are different, the test time is short for one and two months, and the test time is about half a year), and in the test process, whether the key performance of the electric energy meter such as metering error is normal is generally detected in real time, and once abnormality is found in the test process, the accelerated reliability test needs to be stopped in real time so as to prevent unnecessary test resource waste. The test environment capable of detecting metering errors in real time in the acceleration reliability test process is built, equipment required by the test comprises a standard source, an error detection device, a detection monitoring computer and a temperature and humidity control box, a large temperature and humidity control box is generally used, the error detection device in the temperature and humidity control box can simultaneously test metering errors of a plurality of electric energy meters, in the reliability test process, a tested sample is operated under the condition that the tested sample exceeds normal working conditions, stress is applied to shorten failure time, a new failure mechanism is not introduced, failure rate distribution under the test condition can be established by recording and analyzing faults in the acceleration test, and failure rate distribution under the acceleration use condition is deduced by a service life stress model, so that the service life of the product under the normal use condition is estimated.
Along with the technical requirements of electric operators on electronic electric energy meters becoming higher and higher, the requirements on reliability tests of the electric energy meters are becoming more and more strict, and in the process of accelerating the reliability tests, the metering electric energy and metering errors of the electric energy meters need to be checked every day, so that each electric energy meter needs to be correspondingly provided with one error detection device, but under the condition that the number of test samples is increased, the number of the error detection devices also needs to be increased, and because the error detection devices need to be placed in an aging room, the requirements on performance are very high, the cost is very high, and the cost of detection is increased while the error detection devices are increased.
According to the error detection method of the electric energy meter, through special error measurement and calculation software, real-time events of each electric energy meter are sequentially acquired in a timing sequence every day, data are frozen every two days recently, and metering error information of the electric energy meter is acquired through calculation and conversion. According to the error detection method of the electric energy meter, when an acceleration reliability test environment is built, enterprises can achieve the purpose of measuring error detection of the electric energy meter without an expensive error detection device, measurement cost is reduced, and measurement accuracy can be guaranteed.
Referring to fig. 1, in a first aspect, an embodiment of the present application provides an error detection method of an electric energy meter, including but not limited to step S110, step S120, step S130, step S140, step S150, and step S160.
Step S110, obtaining the gauge numbers of a plurality of reference electric energy meters and the gauge numbers of a plurality of test electric energy meters;
step S120, setting the freezing time of the day and the automatic meter reading time according to preset requirements;
step S130, under the condition that the reference electric energy meter and the test electric energy meter are both operated on a reference power supply, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric meter data;
step S140, under the condition that the test electric energy meter is at high temperature and high humidity, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test electric meter data;
step S150, calculating the reference ammeter data and the test ammeter data to obtain the daily use electric energy change rate;
And step S160, comparing the daily use electric energy change rate with a preset ammeter change rate threshold value to obtain an error detection result.
Referring to fig. 5, fig. 5 is a schematic system scheme of an error detection method of an electric energy meter according to some embodiments of the present disclosure; according to one embodiment of the present application, the electric energy meter uses special software for measuring and calculating errors to detect metering errors during the acceleration reliability test. The establishment of the acceleration reliability test environment comprises a temperature and humidity control box, a reference power supply and an error display computer provided with error measurement and calculation special software, wherein a plurality of test electric energy meters are arranged in the temperature and humidity control box, test result judgment of the test electric energy meters is influenced for preventing the reference power supply from being abnormal, test results are also influenced for avoiding other interference factors, and a plurality of reference electric energy meters are also arranged outside the temperature and humidity control box. Before the test formally starts, the meter numbers of a plurality of reference electric energy meters and the meter numbers of a plurality of test electric energy meters are required to be acquired firstly, and the meter numbers of the reference electric energy meters and the meter numbers of the test electric energy meters are input into special error measurement software so that a system can automatically identify the electric energy meter object to be read, a reference power supply is turned on after the step is finished, namely a temperature and humidity control box (for example, the temperature is 85 ℃ and the humidity is 95%), meanwhile, the electric energy meter data, the daily freezing time and the automatic meter reading time are set according to preset requirements, and the automatic meter reading time is at least five minutes later than the daily freezing time to ensure the optimal effectiveness of automatic reading. Specifically, voltage and current provided by a reference power supply are applied to an electric energy meter and a reference electric energy meter in a temperature and humidity control box, and an error display computer provided with error measurement and calculation special software is connected with the temperature and humidity control box through a communication interface (for example, an RS485 communication interface) so as to control the temperature and humidity of the temperature and humidity control box.
According to another embodiment of the application, the reference electric energy meter and the test electric energy meter are read twice daily, in order to reduce the influence of interference factors and improve the accuracy of test results, in the test process, an error display computer is used for reading data of the reference electric energy meter and data of the test electric energy meter according to the set daily freezing time, the set automatic meter reading time and the set meter number timing sequence of the reference electric energy meter, after the first test data are obtained, error measurement and calculation special software is used for converting the obtained first test data to obtain reference electric energy meter data, and the reference electric energy meter data not only can reflect the electric energy meter performance in a normal state, but also can reflect whether errors exist in the reference electric energy meter and the test electric energy meter, so that an operator can correct the test electric energy meter in time. After the reference ammeter data are obtained twice continuously, the actual test ammeter data enter an ammeter acceleration reliability test, during the ammeter acceleration reliability test, namely the test ammeter is in a high-temperature and high-humidity state, the reference ammeter is kept unchanged, the test ammeter and the second test data of the reference ammeter can be automatically read in sequence according to the set daily freezing time and meter reading time, the error measurement special software converts the obtained second test data to obtain test ammeter data, the reference ammeter data and the test ammeter data are calculated finally, the daily use ammeter change rate is obtained, and the daily use ammeter change rate is compared with a preset ammeter change rate threshold value to obtain an error detection result.
Specifically, the "read twice daily reference electric energy meter and test electric energy meter" described in the present application is only for better explaining the workflow of the error detection method of the electric energy meter of the present application, and is not limited to the present application, more specifically, the reference electric energy meter and test electric energy meter may be read twice daily, the reference electric energy meter and test meter may be read three times daily, and the reference electric energy meter and test meter may be read four times daily, as long as the number of readings is greater than or equal to two.
According to one embodiment of the application, when a set of acceleration reliability tests are carried out (a temperature and humidity control box is used), a computer provided with special software for error measurement and calculation can be used for replacing a set of error detection devices to detect metering errors, and when N sets of acceleration reliability tests are carried out (N temperature and humidity control boxes are used), a computer provided with special software for error measurement and calculation can also be used for replacing N sets of error detection devices to detect metering errors, so that the construction cost and the product test cost of a test environment are greatly reduced.
It should be noted that, the error detection method of the electric energy meter can obtain the reference electric meter data and the test electric meter data according to the daily freezing time, the automatic meter reading time, the meter number of the test electric energy meter and the meter number of the reference electric energy meter in a timing and sequencing manner, and directly obtain an error detection result according to the obtained reference electric meter data and the test electric meter data, so that an error detection device is not required to be additionally added, and the detection cost is reduced.
It is understood that the present application further includes: setting test voltage, test current and power factor according to preset requirements; according to the preset system time, broadcasting calibration is carried out on the time of the reference electric energy meter and the time of the test electric energy meter; setting the freezing time of the days and the automatic meter reading time according to preset requirements.
According to the embodiment of the application, the electric energy meter data comprise test voltage, test current and power factor, the test voltage (Un), the test current (10 Imax) and the power factor (COS phi=0.8) are required to be set according to preset requirements before formally entering an electric energy meter acceleration reliability test, and after the test voltage, the test current and the power factor are set, broadcast timing is required to be carried out on the reference electric energy meter and the test electric energy meter according to preset system time, so that the time of the reference electric energy meter and the test electric energy meter can be unified, the influence of metering errors due to time factors is reduced, and the metering error precision is improved. After broadcasting the timing reference electric energy meter and testing the electric energy meter, setting the daily freezing time and the automatic meter reading time, if the daily freezing time is set to 9 hours, 0 minutes and 0 seconds per day, the automatic meter reading time can be set to 9 hours, 5 minutes and 0 seconds per day, and the automatic meter reading time is at least five minutes later than the daily freezing time so as to ensure the optimal effectiveness of automatic meter reading.
Referring to fig. 2, in a first aspect, an embodiment of the present application provides an error detection method of an electric energy meter, including but not limited to step S210 and step S220.
Step S210, reading a reference electric energy meter and a test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a first real-time clock, a first freezing time and first daily use electric energy;
step S220, converting the first real-time clock, the first freezing time and the first daily used electric energy to obtain a first time difference and a first daily used electric energy variable quantity, wherein the first time difference is the difference between the time of the test electric energy meter and the time of the reference electric energy meter when the reference power supply is on, and the first daily used electric energy variable quantity is the difference between the first daily used electric energy and the first daily used electric energy obtained by the last day freezing time.
According to one embodiment of the application, the first test data includes a first real-time clock, a first freezing time, and a first day usage power, and the reference meter data includes a first time difference and a first day usage power variation; after the day freezing time and the automatic meter reading time are set, the reference electric energy meter automatically freezes the used electric energy according to the set day freezing time, and reads the reference electric energy meter and the test electric energy meter in the automatic meter reading time to obtain a first real-time clock, the first freezing time and the first day used electric energy. After the automatic meter reading time, the freezing operation is stopped by referring to the electric energy meter, and the electric energy is continuously tested.
According to another embodiment of the present application, after obtaining the first real-time clock, the first freezing time and the first day of use electric energy, the reference electric energy meter and the test electric energy meter send the reference electric energy meter data to a computer equipped with error measurement dedicated software through a connected communication interface, so that the error measurement dedicated software performs conversion operation according to the first real-time clock, the first freezing time and the first day of use electric energy to obtain a first time difference and a first day of use electric energy variable quantity, so as to calculate a deviation occurring in measurement of the reference electric energy meter under a normal environment, wherein the first time difference is a difference between time of the reference electric energy meter and system time, and the first day of use electric energy variable quantity is a difference between the first day of use electric energy and the first day of use electric energy obtained by the last day of freezing time.
Specifically, under the condition that the first-day used electric energy is not obtained by measuring and calculating the last-day freezing time, the error measuring and calculating special software cannot calculate the first-day used electric energy variation. More specifically, the first-day-use electric energy variation amount is calculated only when the freezing time of two days is continuously elapsed and the two first-day-use electric energy is read.
It can be understood that reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric meter data, and then further comprising: summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily electric energy and the first daily electric energy variation, and generating a reference electric meter report.
According to one embodiment of the application, in order to enable an operator to more intuitively know the performances of the reference electric energy meter and the test electric energy meter under the condition of the reference power supply, and also facilitate subsequent error comparison, the application further summarizes the meter number of the reference electric energy meter, the meter number of the test electric energy meter, automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily electric energy and the first daily electric energy variation, generates a reference electric meter report, displays multiple data in a more intuitive mode, and is convenient for the operator to calculate.
Specifically, the reference ammeter report may be in a table form, or may be in various presentation forms such as a histogram and a pie chart.
It can be understood that summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily electric energy and the first daily electric energy variation, and after generating the reference electric meter report, the method further comprises: when the reference power supply is on, and the reference ammeter data is continuously acquired at least twice, the high-temperature high-humidity state is started so that the test ammeter works in the high-temperature high-humidity state.
According to the embodiment of the application, in order to reduce the error of reading the reference ammeter data, the application continuously reads the reference first real-time clock, the first freezing time and the first daily used electric energy twice according to the set daily freezing time and the set automatic meter reading time, and only after the first real-time clock, the first freezing time and the first daily used electric energy are obtained by at least continuously and automatically freezing twice and continuously and sequentially reading at two times, the high-temperature and high-humidity state is started, and the electric energy meter acceleration reliability test is formally entered.
According to another embodiment of the present application, when the first real-time clock, the first freezing time and the first daily used electric energy are obtained by the first automatic freezing and the first round of reading, the error measurement dedicated software judges that the two rounds of reading operation and the conversion operation are not completed, and the first real-time clock, the first freezing time and the first daily used electric energy of the next round of reading will be continuously read, so that the high-temperature and high-pressure state will not be started.
Referring to fig. 3, in a first aspect, an embodiment of the present application provides an error detection method of an electric energy meter, including but not limited to step S310 and step S320.
Step S310, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a second real-time clock, a second freezing time and second daily electric energy;
Step S320, converting the second real-time clock, the second freezing time and the second daily use electric energy to obtain a second time difference and a second daily use electric energy variation; the second time difference is the difference between the time of the reference electric energy meter and the time of the test electric energy meter in the high-temperature and high-humidity state, and the change amount of the electric energy used on the second day is the difference between the electric energy used on the second day and the electric energy used on the second day obtained by the freezing time on the last day.
It should be noted that, the second test data includes a second real-time clock, a second freezing time and a second daily electric energy, and the test ammeter data includes a second time difference and a second daily electric energy variation.
According to one embodiment of the application, after formally entering an electric energy meter acceleration reliability test, the test electric energy meter and the reference electric energy meter automatically freeze the used electric energy according to the set daily freezing time during the electric energy meter acceleration reliability test, and the second real-time clock, the second freezing time and the second daily used electric energy are read at the automatic meter reading time. After the second real-time clock, the second freezing time and the second day electric energy are obtained, the test electric energy meter and the reference electric energy meter send second test data to a computer provided with special error measuring and calculating software through a connected communication interface, so that the special error measuring and calculating software performs conversion operation according to the second real-time clock, the second freezing time and the second day electric energy to obtain a second time difference and a second day electric energy variation, the deviation of the test electric energy meter and the reference electric energy meter in a normal environment in a test environment is calculated, the second time difference is the difference between the time of the test electric energy meter and the system time, and the second day electric energy variation is the difference between the second day electric energy and the second day electric energy obtained in the last day freezing time.
It will be appreciated that calculating the reference meter data and the test meter data to obtain the daily rate of change of the electrical energy used includes: and dividing the change amount of the electric energy used in the second day and the electric energy used in the first day to calculate to obtain the change rate of the electric energy used in the first day.
According to one embodiment of the present application, the daily used electric energy change rate is a percentage value of the second daily used electric energy change amount and the first daily used electric energy, and the error measurement dedicated software will not calculate the second daily used electric energy change amount under the condition that the last daily freezing time is not measured to obtain the second daily used electric energy. More specifically, only when the freezing time of two days is continuously elapsed and the second-day use electric energy is read out twice, the second-day use electric energy variation amount and the second-day use electric energy variation rate are calculated.
Referring to fig. 4, in a first aspect, an embodiment of the present application provides an error detection method of an electric energy meter, including but not limited to step S410 and step S420.
Step S410, obtaining daily electricity consumption metering errors from the daily electricity consumption change rate, wherein the daily electricity consumption metering errors are the daily electricity consumption change rate;
step S420, summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the second time difference, the second freezing time, the second daily use electric energy variation, the daily use electric energy variation rate and the daily use electric energy metering error, and generating a test electric meter report.
According to one embodiment of the application, under the reference temperature and humidity environment, the error of the test electric energy meter is trimmed to be lower than 0.1%, and the daily use electric energy change rate at the moment is equal to the daily use electric energy metering error, so that the daily use electric energy metering error can be obtained according to the daily use electric energy change rate and is presented in a percentage form. For enabling operators to intuitively know the performance of the electric energy meter tested in the electric energy meter acceleration reliability test, and for facilitating subsequent error comparison, the method and the device further generate a test ammeter report according to the meter number of the test electric energy meter, the meter number of the reference electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the second time difference, the second freezing time, the second daily electric energy variable quantity, the daily electric energy variable rate and the daily electric energy metering error.
Specifically, the reference meter report and the test meter report may be bar charts, pie charts or other manners. After the reference ammeter report and the test ammeter report are obtained, the reference ammeter report and the test ammeter report can be drawn in the same table according to different colors or lines, so that operators can more intuitively see errors of the ammeter under the condition of a reference power supply and under the condition of high temperature and high humidity.
It can be understood that comparing the daily electricity consumption change rate with a preset electricity meter change rate threshold value to obtain an error detection result, including: the change rate of the electric energy used in the same day is smaller than the change rate threshold value of the electric meter, and the error detection result is that the error exists in the test electric meter; the change rate of the electric energy used in the same day is larger than the change rate threshold value of the electric meter, and the error detection result is that the test electric meter works normally.
It can be understood that comparing the daily electricity consumption rate with a preset electricity meter rate threshold value, and after obtaining an error detection result, one of the following steps is included: when the time of the reference electric energy meter is abnormal, interrupting the detection process; when the time of the test electric energy meter is abnormal, interrupting the detection process; when the first time difference is abnormal, interrupting the detection process; when the second time difference is abnormal, interrupting the detection process; the metering error of the electric energy used in the current day is abnormal, and the detection process is interrupted; when the first time difference and the second time difference are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal; and when the variation of the electric energy used in the first day and the variation of the electric energy used in the second day are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal.
According to one embodiment of the application, after the reference electric meter report and the test electric meter report are obtained, error measurement and calculation special software further performs comprehensive comparison according to multiple data in the reference electric meter and multiple data in the test electric meter, and measures and calculates errors of the reference electric meter and the test electric meter, so that performance data of the electric meter in an electric meter acceleration reliability test are obtained, and whether the test electric meter and the reference electric meter are abnormal or not is judged.
According to another embodiment of the application, the present application can also judge the current situation according to the reference electric meter data and the test electric meter data, when the reference electric meter is abnormal, or the test electric meter is abnormal, or the first time difference is abnormal, or the second time difference is abnormal, or the daily use electric energy metering error is abnormal, so that the reference electric meter or the test electric meter is abnormal, and the real-time interruption acceleration reliability test is required to avoid unnecessary test resource loss. When the first time difference and the second time difference are abnormal and the abnormal errors of all the electric meters are consistent, the reference power supply is considered to be abnormal, and the metering function of the electric meters is normal. When the converted first-day used electric energy variation and the converted second-day used electric energy variation are abnormal and all the abnormal errors of the electric meters are all the same, the reference power supply is considered to be abnormal, and the metering function of the electric meters is normal.
In a second aspect, referring to fig. 6, an embodiment of the present application provides an error detection system of an electric energy meter, including:
at least one memory 200;
at least one processor 100;
at least one program;
The programs are stored in the memory 200, and the processor 100 executes at least one program to implement:
an error detection method of an electric energy meter according to any one of the embodiments of the first aspect of the present application.
The processor 100 and the memory 200 may be connected by a bus or other means.
The processor 100 performs various functional applications and data processing by executing non-transitory software instructions, commands and signals stored in the memory 200, that is, implements an error detection method of the electric energy meter according to the embodiment of the first aspect.
Non-transitory software instructions and instructions required to implement the error detection system of an electric energy meter of the above embodiments are stored in the memory 200, and when executed by the processor 100, perform an error detection method of an electric energy meter of the first aspect embodiment of the present application, for example, perform the method steps S110 to S160 in fig. 1, the method steps S210 to S220 in fig. 2, the method steps S310 to S320 in fig. 3, and the method steps S410 to S420 in fig. 4 described above.
In a third aspect, embodiments of the present application provide a computer-readable storage medium storing a computer-executable signal for performing:
an error detection method for an electric energy meter according to any one of the embodiments of the first aspect of the application.
For example, the above-described method steps S110 to S160 in fig. 1, method steps S210 to S220 in fig. 2, method steps S310 to S320 in fig. 3, and method steps S410 to S420 in fig. 4 are performed.
The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
From the description of the embodiments above, those skilled in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable signals, data structures, instruction modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable signals, data structures, instruction modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and may include any information delivery media.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.
Claims (11)
1. An error detection method of an electric energy meter is characterized by comprising the following steps:
acquiring the gauge numbers of a plurality of reference electric energy meters and the gauge numbers of a plurality of test electric energy meters;
setting the freezing time of the heliostat and the automatic meter reading time according to preset requirements;
under the condition that the reference electric energy meter and the test electric energy meter are both operated on a reference power supply, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric meter data;
under the condition that the test electric energy meter is in high temperature and high humidity, reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test electric meter data;
Calculating the reference ammeter data and the test ammeter data to obtain the daily use electric energy change rate;
and comparing the daily use electric energy change rate with a preset ammeter change rate threshold value to obtain an error detection result.
2. The error detection method of an electric energy meter according to claim 1, wherein the first test data includes a first real-time clock, a first freezing time, and a first day usage electric energy, and the reference electric meter data includes a first time difference and a first day usage electric energy variation amount;
the method for obtaining the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter, obtaining first test data, and converting the first test data to obtain reference electric energy meter data comprises the following steps:
reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a first real-time clock, a first freezing time and first daily electric energy;
And converting the first real-time clock, the first freezing time and the first daily used electric energy to obtain a first time difference and a first daily used electric energy variable quantity, wherein the first time difference is the difference between the time of a test electric energy meter under the condition that a reference power supply is on and the time of the reference electric energy meter, and the first daily used electric energy variable quantity is the difference between the first daily used electric energy and the first daily used electric energy obtained by the last day freezing time.
3. The method for detecting errors of an electric energy meter according to claim 2, wherein the steps of reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain first test data, and converting the first test data to obtain reference electric energy meter data, and further comprise:
summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first daily electric energy and the first daily electric energy variation, and generating a reference electric meter report.
4. The method for detecting an error in an electric energy meter according to claim 3, wherein the step of summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the first time difference, the first freezing time, the first day electric energy and the first day electric energy variation amount, and the step of generating the reference electric energy meter report further comprises:
and under the condition that the reference power supply is on, when the reference ammeter data are continuously acquired at least twice, starting a high-temperature high-humidity state so as to enable the test ammeter to work in the high-temperature high-humidity state.
5. The error detection method of an electric energy meter according to claim 2, wherein the second test data includes a second real-time clock, a second freezing time, and a second day use electric energy, and the test electric meter data includes a second time difference and a second day use electric energy variation;
the step of reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test ammeter data, wherein the step of obtaining the test ammeter data comprises the following steps:
Reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the automatic meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain a second real-time clock, a second freezing time and second daily electric energy;
converting the second real-time clock, the second freezing time and the second daily use electric energy to obtain a second time difference and a second daily use electric energy variation; the second time difference is the difference between the time of the reference electric energy meter and the time of the test electric energy meter in a high-temperature high-humidity state, and the change amount of the electric energy used on the second day is the difference between the electric energy used on the second day and the electric energy used on the second day obtained by the freezing time on the last day.
6. The method for detecting an error in an electric energy meter according to claim 5, wherein the calculating the reference meter data and the test meter data to obtain a daily-use electric energy change rate includes:
and dividing the change amount of the electric energy used in the second day and the electric energy used in the first day to obtain the change rate of the electric energy used in the day.
7. The method for detecting an error of an electric energy meter according to claim 6, wherein the reading the reference electric energy meter and the test electric energy meter according to the daily freezing time, the meter reading time, the meter number of the reference electric energy meter and the meter number of the test electric energy meter to obtain second test data, and converting the second test data to obtain test electric meter data, further comprises:
Obtaining daily electricity consumption metering errors according to the daily electricity consumption change rate, wherein the daily electricity consumption metering errors are the daily electricity consumption change rate;
summarizing the meter number of the reference electric energy meter, the meter number of the test electric energy meter, the automatic meter reading time, the time of the reference electric energy meter, the time of the test electric energy meter, the second time difference, the second freezing time, the second daily electric energy change amount, the daily electric energy change rate and the daily electric energy metering error, and generating a test electric meter report.
8. The method for detecting errors of an electric energy meter according to claim 1, wherein comparing the daily-use electric energy change rate with a preset electric energy meter change rate threshold value to obtain an error detection result comprises:
when the daily use electric energy change rate is smaller than the electric meter change rate threshold, the error detection result is that the test electric energy meter has errors;
and when the daily use electric energy change rate is larger than the electric meter change rate threshold, the error detection result is that the test electric energy meter works normally.
9. The method for detecting errors in an electric energy meter according to claim 7, wherein comparing the daily-use electric energy change rate with a preset electric energy meter change rate threshold value to obtain an error detection result, further comprises one of the following steps:
When the time of the reference electric energy meter is abnormal, interrupting the detection process;
when the time of the test electric energy meter is abnormal, interrupting the detection process;
when the first time difference is abnormal, interrupting the detection process;
when the second time difference is abnormal, interrupting the detection process;
when the daily electricity consumption metering error is abnormal, interrupting the detection process;
when the first time difference and the second time difference are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal;
and when the first-day used electric energy variation and the second-day used electric energy variation are abnormal and the abnormal errors are consistent, determining that the reference power supply is abnormal.
10. An error detection system for an electric energy meter, comprising:
at least one memory;
at least one processor;
at least one program;
the program is stored in the memory, and the processor executes at least one of the programs to implement:
the error detection method of an electric energy meter according to any one of claims 1 to 9.
11. A computer-readable storage medium storing a computer-executable signal for performing:
The error detection method of an electric energy meter according to any one of claims 1 to 9.
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| CN117630798B (en) * | 2023-11-27 | 2024-06-11 | 国网四川省电力公司营销服务中心 | Error monitoring method, device, equipment and medium for cluster type direct current electric energy meter |
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