CN116582603A - Low-voltage station clock level data acquisition method based on HPLC+HRF communication - Google Patents
Low-voltage station clock level data acquisition method based on HPLC+HRF communication Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 71
- 238000004891 communication Methods 0.000 title claims abstract description 65
- 238000004128 high performance liquid chromatography Methods 0.000 title claims abstract description 57
- 238000011156 evaluation Methods 0.000 claims abstract description 46
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000004458 analytical method Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 31
- 125000003275 alpha amino acid group Chemical group 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 9
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- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000013524 data verification Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 238000009432 framing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/14—Multichannel or multilink protocols
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a low-voltage station-to-clock data acquisition method based on HPLC+HRF communication, which relates to the technical field of wireless data communication and solves the problems of conventional CCO, STA serial port communication delay and one-to-one acquisition singleness, and comprises the steps of starting a minute-level acquisition scheme evaluation, node minute data acquisition and statistics of an STA information list incapable of responding, acquiring electric energy meter data every whole minute in an evaluation stage and circularly storing, formally issuing a minute-level acquisition scheme and acquiring electric energy meter data every whole minute in an acquisition stage and storing the electric energy meter data locally; according to the invention, the slip period of the acquisition scheme is evaluated through the acquisition evaluation stage and provided for the concentrator for analysis and processing, and meanwhile, clock synchronization of all electric energy meters in the platform is ensured through periodical broadcasting timing in the scheme acquisition stage; according to the invention, by utilizing an HPLC+HRF high-speed dual-mode dual-channel communication mode and adopting a brand new acquisition scheme, data acquisition is carried out on all electric energy meters in a station area at intervals of 1min, so that the data acquisition quantity is greatly improved.
Description
Technical Field
The invention relates to the technical field of wireless data communication, in particular to a low-voltage station division clock-level data acquisition method based on HPLC+HRF communication.
Background
The current state network or the south network still stays in the period range of 15min-60min for the voltage, current and electric energy data acquisition frequency of the intelligent meter equipment of the low-voltage transformer areas, and when the number of the transformer areas is large, the acquisition frequency is less ideal, so that the intelligent meter equipment has obvious defects for the application support of novel electric power. The reason for this is mainly that the prior acquisition scheme has great defect and does not well perform the application of high-speed communication of HPLC.
In the conventional technology, the low-voltage station clock data acquisition method comprises the following steps:
and (3) manual collection: this method requires a worker to manually collect data and record it every half hour. The staff needs to reach the high-voltage area within each half hour and manually record the information of the voltage value, the minutes, the types and the like of each area.
And (3) timer acquisition: this method can use a computer to set a timer to automatically reach the high voltage station area and collect data within half an hour. This method requires setting a timer to ensure accuracy of data acquisition.
Collecting by a camera: the method can use the camera to set a monitoring point in each area and collect data at the monitoring points. The staff can record the information of minutes, types and the like of each area through the monitoring points.
And (3) sensor acquisition: this method can set up a sensor in each district, in order to record information such as voltage value, minute number. The sensor can automatically collect data and record and analyze the data.
And (3) manual collection: this method requires the staff to reach the high voltage area within each half hour and manually record information on the voltage value, minutes, type, etc. This approach requires a high professional quality and responsibility from the staff.
The above acquisition methods are all aimed at minute data acquisition of a low-voltage station area, and the above methods can realize acquisition of low-voltage station area data information to a certain extent, but the above methods can not realize communication of the data information, and most of the methods are poor in data communication capacity in a wired communication mode.
According to the traditional power acquisition system scheme, a novel acquisition scheme is provided by utilizing an HPLC+HRF dual-mode dual-channel communication mode newly released by the national network, the acquisition scheme can reach the frequency of 1min, the problems of delay of communication of serial ports of CCO and STA and singleness of one-to-one acquisition are solved, and the number of the files in a platform area is not limited. Provides powerful guarantee for data analysis and user behavior analysis of novel electric power.
Disclosure of Invention
Aiming at the defects of the technology, the invention discloses a low-voltage station area clock-level data acquisition method based on HPLC+HRF communication, which adopts a variable window specific trend algorithm to perform trend removal processing on a sequence by estimating the trend of the data sequence, avoids the influence of the size of a fixed window on an acquisition result, and realizes the accurate acquisition of data; according to the invention, the maximum slip period of the whole acquisition scheme is evaluated through the acquisition evaluation stage, the maximum slip period is provided for the concentrator to analyze and process, and meanwhile, the clock synchronization of all electric energy meters in the platform area is ensured through broadcasting timing periodically in the acquisition stage of the acquisition scheme; according to the invention, by utilizing an HPLC+HRF high-speed dual-mode dual-channel communication mode and adopting a brand-new acquisition scheme, data acquisition is carried out on all electric energy meters in a platform area at intervals of 1min, so that the data acquisition amount is greatly improved, and the data analysis and user behavior analysis guarantee of novel electric power are enhanced.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a low-voltage station clock-level data acquisition method based on HPLC+HRF communication comprises the following steps,
step 1, starting a minute-level acquisition scheme evaluation;
the concentrator starts a minute-level acquisition scheme evaluation, reads the slip time of the acquisition scheme after calculating the delay time DT according to the number of files, starts to read the minute-level acquisition slip time Tw after judging that the delay time DT is reached, and sends a stop minute-level acquisition scheme evaluation after the slip time after three rounds of delay time DT is acquired;
step 2, acquiring node minute data and counting an STA information list which cannot be responded;
after receiving the evaluation information, the CCO informs the point-to-point of the evaluation information to the STA, and counts the node information of the STA which cannot be responded; after all the STAs are informed, the CCO starts all the file data acquisition of the 1 st round and updates the information list of the non-answering STAs, minute-level acquisition scheme evaluation data is obtained after multiple rounds of data acquisition, when the minute-level acquisition scheme evaluation is stopped issued by the concentrator, the CCO clears the local acquisition scheme, clears the acquisition data, and broadcasts 3 times to inform all the STAs;
step 3, acquiring data of the electric energy meter every whole minute in the evaluation stage and circularly storing the data;
after receiving the evaluation information, the STA calculates the maximum data item of the data acquisition of the electric energy meter through the maximum load capacity of the primary channel of the HPLC and the HRF, the STA performs framing, reads the data of the electric energy meter every whole minute, performs cyclic storage, and after receiving the evaluation of the acquisition scheme of the stop minute level issued by the CCO, the STA stops data acquisition of the electric energy meter and clears all local data;
step 4, formally issuing a minute-level acquisition scheme;
the concentrator acquires the slip time after the completion of the evaluation, starts to issue a minute-level acquisition scheme, provides data items required by the acquisition in the acquisition scheme, waits for CCO and STA to acquire data after the completion of the issuing, and starts to read CCO local minute-level data when the slip period is reached, and stores the CCO local minute-level data in the local area for the acquisition master station to read;
step 5, the CCO and the STA carry out a synchronization scheme and set corresponding parameters;
after receiving a minute-level acquisition scheme, the CCO starts point-to-point synchronization to the STA, and after the scheme synchronization is completed, the CCO sets corresponding parameters for periodic reading;
step 6, acquiring electric energy meter data every whole minute in the acquisition stage and storing the data to a local place;
after receiving the minute acquisition scheme, the STA performs data acquisition of the electric energy meter by the vertical horse, the acquired data is circularly stored to the local area every whole minute by the acquisition reference clock, and traversal response is performed from the local storage area of the STA according to the acquisition reference clock and the acquisition number issued by CCO acquisition.
As a further technical scheme of the invention, the HPLC+HRF high-speed dual-mode dual-channel communication mode comprises data acquisition and processing, a communication protocol, data transmission and data processing and analysis, wherein the data acquisition and processing is that the HPLC and the HRF respectively acquire data through own data acquisition units and transmit the data to a computer, and the computer processes and stores the data through the dual-channel communication mode through an acquisition card or an interface board; the communication protocol comprises a data transmission format, a communication frequency and data verification; the data transmission means that data of the HPLC and the HRF are transmitted to a database, and the transmission process comprises data synchronization and data flow control; the data processing comprises data cleaning, data calculation and data testing, more detailed and accurate analysis and test results are obtained by processing and analyzing data acquired by the HPLC and the HRF, and the high-speed and stable data intercommunication between the HPLC and the HRF is realized by adopting an HPLC+HRF high-speed dual-mode dual-channel communication mode, so that the efficiency and the precision of data analysis and processing are improved.
As a further technical scheme of the invention, the HPLC+HRF high-speed dual-mode dual-channel communication adopts a variable window specific trend algorithm to collect data, and the variable window specific trend algorithm valueThe method comprises the following steps:
（1）
in the formula (1), the components are as follows,for the acquisition of the number of data sets +.>Is the window length for observing the acquired data, +.>=j=0,1,2,…n，
To express two channel acquisition forms of HPLC+HRF high-speed dual-mode dual channel, a sign function is definedThe method comprises the following steps:
（2）
to embody the signal of the data change of the electric energy meter in the data acquisition, the output signals of voltage, current, electric quantity and power are output(i=1,2…,n) Mapping and transforming to obtain:
（3）
in the formula (3), the amino acid sequence of the compound,is a voltage signal, a current signal, an electric quantity signal and a power signal, and parametersvIs the rate of change of the signal;
the variable window specific trend algorithm value can be obtained by the formulas (1) to (3)The method comprises the following steps:
(4)
in the formula (4), the amino acid sequence of the compound,for the acquisition of the number of data sets +.>Is a voltage signal, a current signal, an electric quantity signal and a power signal;
the variable window specific trend algorithm carries out trend removal processing on the sequence by estimating the trend of the data sequence, and self-adaptively determines the local trend according to the window size, so that the influence of the fixed window size on the acquisition result is avoided, and the accurate acquisition of the data is realized.
As a further technical solution of the present invention, the delay time is a time required for completing data reception from the start of data to the end of the receiving side, and in the communication network, the delay time includes a data transmission time, a routing time and a processing time in the network, and the delay time is: （5）
in the formula (5), N is the number of files of the electric energy meter;
the delay time directly influences the instantaneity and the accuracy of data transmission, and the delay time is measured and evaluated through the prediction model evaluation so as to optimize communication according to actual conditions, thereby improving the performance of the delay time.
As a further technical scheme of the invention, the CCO starts the collection reference clock for collecting all archival data of the 1 st round: （6）
recording end time after first round data acquisition is completed，
The slip time of the minute-level acquisition scheme is as follows: （7）
starting multiple rounds of data acquisition to obtain，
The average slip time is:（8）
in the formula (8), the amino acid sequence of the compound,nthe number of data acquisition rounds.
As a further technical scheme of the invention, the scheme of reading CCO local minute-level data by the concentrator comprises two schemes of calculating and reading data parameters by adopting a data acquisition starting clock according to slip time and directly reading minute-level data without adopting the data acquisition starting clock, and the running condition, the energy consumption condition and the predictive maintenance information of the equipment are obtained by analyzing and processing the minute-level data.
As a further technical scheme of the invention, the method for calculating the read data parameters by the concentrator by adopting the data acquisition starting clock according to the slip time comprises the following steps:
firstly, calculating the data start clock acquired at this time according to the slip time as follows:
（9）
in the formula (9), the amino acid sequence of the compound,for the current clock +.>Slip time in minutes;
then each node is adopted to read for 1 time, 2 times and 3 times, and the data acquisition method for 4 times is adopted to acquire voltage, current and power data items;
finally, acquiring data parameters of the nth round according to the acquisition steps, wherein the initial clock of the data acquisition of the nth round is as follows: （10）
in the formula (10), the amino acid sequence of the compound,for collecting data, start clock->For the acquisition of data rounds.
As a further technical scheme of the invention, the method for directly reading the minute-level data by the concentrator without adopting an acquisition start clock comprises the following steps:
directly reading the last 8 times of data of each node without adopting an acquisition starting clock, namelyThe acquisition of voltage, current and power data items is realized through the last 1-last 8 times;
reading the slip time after one round of reading is completed, when the slip timeAnd updating the data density read next time as follows: />And repeating the reading steps to read the minute data parameters.
As a further technical solution of the present invention, the steps of performing a synchronization scheme with the STA and setting corresponding parameters by the CCO and the STA are:
step one, setting a current clock as a starting clock Ts of the whole acquisition scheme, wherein the starting clock of the nth round is as follows:；
step two, setting the number n of each slave node as the ratio of the response data quantity of all data items to the maximum load quantity of HPLC and HRF;
step three, the CCO collects the minute-level data of all the slave nodes STA according to the file sequence, and stores the data to a local waiting concentrator for collection;
and step four, updating the slip time after reading of all nodes in the file is completed, and starting the next round of data acquisition.
The beneficial effects of the invention are as follows:
different from the conventional technology, the invention discloses a low-voltage station clock-level data acquisition method based on HPLC+HRF communication, which adopts a variable window specific trend algorithm to carry out trend removal processing on a sequence by estimating the trend of the data sequence, avoids the influence of the size of a fixed window on an acquisition result, and realizes the accurate acquisition of data;
according to the invention, the maximum slip period of the whole acquisition scheme is evaluated through the acquisition evaluation stage, the maximum slip period is provided for the concentrator to analyze and process, and meanwhile, the clock synchronization of all electric energy meters in the platform area is ensured through broadcasting timing periodically in the acquisition stage of the acquisition scheme; according to the invention, by utilizing an HPLC+HRF high-speed dual-mode dual-channel communication mode and adopting a brand-new acquisition scheme, data acquisition is carried out on all electric energy meters in a platform area at intervals of 1min, so that the data acquisition amount is greatly improved, and the data analysis and user behavior analysis guarantee of novel electric power are enhanced.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, from which, without inventive faculty, other drawings can be obtained for a person skilled in the art, in which:
FIG. 1 is a schematic diagram of steps of a low-voltage station clock-level data acquisition method based on HPLC+HRF communication;
FIG. 2 is a flow chart of the low-voltage station clock-level data acquisition and evaluation method based on HPLC+HRF communication;
FIG. 3 is a collection flow chart of a collection scheme of a low-voltage station area clock-level data collection method based on HPLC+HRF communication;
fig. 4 is a schematic diagram of steps of a synchronization scheme between CCO and STA and setting corresponding parameters in a low-voltage station clock level data acquisition method based on hplc+hrf communication according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a low-voltage station clock-level data acquisition method based on HPLC+HRF communication, as shown in figure 1, comprises the following steps,
as shown in fig. 2:
step 1, starting a minute-level acquisition scheme evaluation;
the concentrator starts a minute-level acquisition scheme evaluation, reads the slip time of the acquisition scheme after calculating the delay time DT according to the number of files, starts to read the minute-level acquisition slip time Tw after judging that the delay time DT is reached, and sends a stop minute-level acquisition scheme evaluation after the slip time after three rounds of delay time DT is acquired;
step 2, acquiring node minute data and counting an STA information list which cannot be responded;
after receiving the evaluation information, the CCO informs the point-to-point of the evaluation information to the STA, and counts the node information of the STA which cannot be responded; after all the STAs are informed, the CCO starts all the file data acquisition of the 1 st round and updates the information list of the non-answering STAs, minute-level acquisition scheme evaluation data is obtained after multiple rounds of data acquisition, when the minute-level acquisition scheme evaluation is stopped issued by the concentrator, the CCO clears the local acquisition scheme, clears the acquisition data, and broadcasts 3 times to inform all the STAs;
step 3, acquiring data of the electric energy meter every whole minute in the evaluation stage and circularly storing the data;
after receiving the evaluation information, the STA calculates the maximum data item of the data acquisition of the electric energy meter through the maximum load capacity of the primary channel of the HPLC and the HRF, the STA performs framing, reads the data of the electric energy meter every whole minute, performs cyclic storage, and after receiving the evaluation of the acquisition scheme of the stop minute level issued by the CCO, the STA stops data acquisition of the electric energy meter and clears all local data;
as shown in fig. 3:
step 4, formally issuing a minute-level acquisition scheme;
the concentrator acquires the slip time after the completion of the evaluation, starts to issue a minute-level acquisition scheme, provides data items required by the acquisition in the acquisition scheme, waits for CCO and STA to acquire data after the completion of the issuing, and starts to read CCO local minute-level data when the slip period is reached, and stores the CCO local minute-level data in the local area for the acquisition master station to read;
step 5, the CCO and the STA carry out a synchronization scheme and set corresponding parameters;
after receiving a minute-level acquisition scheme, the CCO starts point-to-point synchronization to the STA, and after the scheme synchronization is completed, the CCO sets corresponding parameters for periodic reading;
step 6, acquiring electric energy meter data every whole minute in the acquisition stage and storing the data to a local place;
after receiving the minute acquisition scheme, the STA performs data acquisition of the electric energy meter by the vertical horse, the acquired data is circularly stored to the local area every whole minute by the acquisition reference clock, and traversal response is performed from the local storage area of the STA according to the acquisition reference clock and the acquisition number issued by CCO acquisition.
Further, the HPLC+HRF high-speed dual-mode dual-channel communication mode comprises data acquisition and processing, a communication protocol, data transmission and data processing and analysis, wherein the data acquisition and processing is that the HPLC and the HRF respectively acquire data through own data acquisition units and transmit the data to a computer, and the computer processes and stores the data through the dual-channel communication mode through an acquisition card or an interface board; the communication protocol comprises a data transmission format, a communication frequency and data verification; the data transmission means that data of the HPLC and the HRF are transmitted to a database, and the transmission process comprises data synchronization and data flow control; the data processing comprises data cleaning, data calculation and data testing, more detailed and accurate analysis and test results are obtained by processing and analyzing data acquired by the HPLC and the HRF, and the high-speed and stable data intercommunication between the HPLC and the HRF is realized by adopting an HPLC+HRF high-speed dual-mode dual-channel communication mode, so that the efficiency and the precision of data analysis and processing are improved.
The working process of the HPLC+HRF high-speed dual-mode dual-channel communication mode comprises the following steps: the HPLC and the HRF collect electrical signals and transmit the electrical signals to a computer, the computer simultaneously receives the electric energy meter data from the HPLC and the HRF through a collection card and decodes the electric energy meter data, and in the decoding process, the computer transmits the data to the HPLC and the HRF according to a designated protocol; in the data transmission process of the electric energy meter, data synchronization and data flow control are considered, in the aspect of data synchronization, the electric energy meter data of the HPLC and the HRF are transmitted according to a time interval of 1min so as to ensure the accuracy of the data, and in the aspect of data flow control, the overflow and the loss of the data are avoided through the management of a data buffer zone; after receiving the electric energy meter data of the HPLC and the HRF, the joint analysis and the data sharing between the HPLC and the HRF are realized by processing and analyzing the electric energy meter data of the HPLC and the HRF.
Furthermore, the HPLC+HRF high-speed dual-mode dual-channel communication adopts a variable window specific trend algorithm to collect data, and the variable window specific trend algorithm valueThe method comprises the following steps:
（1）
in the formula (1), the components are as follows,for the acquisition of the number of data sets +.>Is the window length for observing the acquired data, +.>=j=0,1,2,…n，
To express two channel acquisition forms of HPLC+HRF high-speed dual-mode dual channel, a sign function is definedThe method comprises the following steps:
（2）
to embody the signal of the data change of the electric energy meter in the data acquisition, the output signals of voltage, current, electric quantity and power are output(i=1,2…,n) Mapping and transforming to obtain:
（3）
in the formula (3), the amino acid sequence of the compound,is a voltage signal, a current signal, an electric quantity signal and a power signal, and parametersvIs the rate of change of the signal;
the variable window specific trend algorithm value can be obtained by the formulas (1) to (3)The method comprises the following steps:
(4)
in the formula (4), the amino acid sequence of the compound,for the acquisition of the number of data sets +.>Is a voltage signal, a current signal, an electric quantity signal and a power signal;
the variable window specific trend algorithm carries out trend removal processing on the sequence by estimating the trend of the data sequence, and self-adaptively determines the local trend according to the window size, so that the influence of the fixed window size on the acquisition result is avoided, and the accurate acquisition of the data is realized.
In a specific embodiment, the variable window specific trend algorithm adapts to the characteristics of the electric energy meter data signals of different time scales by adjusting the size of a window so as to capture details of the electric energy meter data signals, the variable window specific trend algorithm analyzes the electric energy meter data in a sliding window to obtain local trend functions of electric energy meter voltage, current and power data parameters, and the variable window specific trend algorithm periodically detects the acquired electric energy meter data, detects pseudo-periodic changes in the electric energy meter data and decomposes the electric energy meter data signals into periodic components of different frequencies;
the data process and the result of the electric energy meter collected by adopting the variable window specific trend algorithm and the conventional collection mode are compared and analyzed, and the comparison result is shown in the table 1 and the table 1:
table 1: electric energy meter data process and result comparison table
As can be seen from table 1: the method for acquiring the data of the electric energy meter by adopting the variable window specific trend algorithm has the advantages that under the condition of the same acquisition group number task, the acquisition time is shorter than the conventional acquisition time, meanwhile, the data acquisition efficiency and the acquisition accuracy of the electric energy meter are higher than those of the conventional acquisition method, and the analysis of the data result of the table 1 can be obtained: the HPLC+HRF high-speed dual-mode dual-channel communication adopts a variable window specific trend algorithm to collect data, so that the collection efficiency is quickened, and the collection accuracy is improved.
Further, the delay time is the time required for the data to be finally received from the data start to the receiving party, and in the communication network, the delay time comprises the data transmission time, the routing and processing time in the network, and the delay time is: （5）
in the formula (5), N is the number of files of the electric energy meter;
the delay time directly influences the instantaneity and the accuracy of data transmission, and the delay time is measured and evaluated through the prediction model evaluation so as to optimize communication according to actual conditions, thereby improving the performance of the delay time.
In a specific embodiment, the transmission delay time affects the quality and efficiency of data transmission, different transmission modes can generate different delay times, the transmission delay time is affected by the data transmission mode and the data propagation path, the high-speed dual-mode dual-channel communication mode of HPLC+HRF greatly accelerates the data transmission speed by increasing the data transmission mode and the transmission channel method, and in the data transmission process, the data transmission mode and the path are reasonably allocated and set so as to ensure the quality and the efficiency of data transmission.
Further, the CCO starts the collection reference clock for all archival data collection of round 1 as follows: （6）
recording end time after first round data acquisition is completed，
The slip time of the minute-level acquisition scheme is as follows: （7）
starting multiple rounds of data acquisition to obtain，
The average slip time is:（8）
in the formula (8), the amino acid sequence of the compound,nthe number of data acquisition rounds.
In a specific embodiment, in the acquisition and evaluation stage, the maximum slip period of the whole acquisition scheme is evaluated, the evaluation result is provided for the concentrator to be analyzed and processed, the acquisition is performed by taking the minute level as a standard, the slip time of the minute level acquisition scheme is calculated, after multiple rounds of data acquisition, the average slip time is obtained according to the acquisition data and the calculation result, and the calculation result is shown in table 2:
table 2: minute-level acquisition scheme time record table
And obtaining a minute-level acquisition scheme time information record according to the table 2, accurately obtaining a slip period of an acquisition scheme in an acquisition evaluation stage, dividing the total sum of the slip periods by an average slip period obtained by carrying out acquisition rounds, and analyzing the slip time to increase the accuracy of the acquisition evaluation stage.
Furthermore, the scheme of reading CCO local minute-level data by the concentrator comprises two schemes of calculating and reading data parameters by using a data acquisition starting clock according to slip time and directly reading minute-level data without using the data acquisition starting clock, and the operation condition, the energy consumption condition and the predictive maintenance information of the equipment are obtained by analyzing and processing the minute-level data.
In a specific embodiment, the concentrator exchanges data with the CCO via a MODBUS communication protocol,
the concentrator sends a command for reading local minute data to the CCO through a communication protocol, the CCO receives the command and then sends the local minute data to the concentrator, the concentrator calculates data parameters by using slip time and directly reads the minute data without adopting an acquisition start clock for reading the minute data sent by the CCO, and the read minute data is displayed through a data management platform of the concentrator.
Further, the method for calculating the read data parameters by the concentrator through adopting the collected data start clock and using the slip time comprises the following steps:
firstly, calculating the data start clock acquired at this time according to the slip time as follows:
（9）
in the formula (9), the amino acid sequence of the compound,for the current clock +.>Slip time in minutes;
then each node is adopted to read for 1 time, 2 times and 3 times, and the data acquisition method for 4 times is adopted to acquire voltage, current and power data items;
finally, acquiring data parameters of the Nth round according to the acquisition steps,
the starting clock of the data acquisition of the nth round is as follows: （10）
in the formula (10), the amino acid sequence of the compound,for collecting data, start clock->For the acquisition of data rounds.
In a specific embodiment, in the acquisition stage of the acquisition scheme, the data start clock acquired this time is calculated according to the slip time, the above 4 acquisition methods read the data of the electric energy meter of the whole acquisition scheme and record the data acquisition result of N rounds, and the read result is shown in table 3:
table 3: slip time reading data parameter record table
According to the table 3, the electric energy meter data of the whole acquisition scheme is read by adopting the method of 4 times of acquisition, meanwhile, the recorded information of the initial clock of the acquired data is calculated by using the slip time, and the reading of each node of the electric energy meter data is realized after multiple rounds of reading, so that the parameter reading of the grading data by the concentrator is completed.
Furthermore, the method for directly reading the minute-level data by the concentrator without adopting an acquisition start clock comprises the following steps:
directly reading the last 8 times of data of each node without adopting an acquisition starting clock, namelyThe acquisition of voltage, current and power data items is realized through the last 1-last 8 times;
reading the slip time after one round of reading is completed, when the slip timeAnd updating the data density read next time as follows: />And repeating the reading steps to read the minute data parameters.
In a specific embodiment, in the acquisition stage of the acquisition scheme, by directly reading the last 8 times of data of each node, after one round of reading is completed, when the slip time is longer than the last 8 times of data time, updating the reading round, finally realizing the reading of the data of the electric energy meter of the whole acquisition scheme, and recording the data acquisition result of M rounds as shown in table 4:
table 4: direct reading data parameter record table
According to the scheme, the acquired data start clock is not limited, the data of the electric energy meter of the whole acquisition scheme is read by directly reading the last 8 times of data of each node, and the reading round is updated until the data item is read completely when the slip time is longer than the last 8 times of data, so that the parameter reading of the data of the packet class by the concentrator is realized.
Further, as shown in fig. 4, the steps of performing a synchronization scheme with the STA and setting corresponding parameters are as follows:
step one, setting a current clock as a starting clock Ts of the whole acquisition scheme, wherein the starting clock of the nth round is as follows:；
step two, setting the number n of each slave node as the ratio of the response data quantity of all data items to the maximum load quantity of HPLC and HRF;
step three, the CCO collects the minute-level data of all the slave nodes STA according to the file sequence, and stores the data to a local waiting concentrator for collection;
and step four, updating the slip time after reading of all nodes in the file is completed, and starting the next round of data acquisition.
While specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are by way of example only, and that various omissions, substitutions, and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is limited only by the following claims.
Claims (9)
1. The low-voltage station clock-level data acquisition method based on HPLC+HRF communication is characterized by comprising the following steps of: comprises the following steps of the method,
step 1, starting a minute-level acquisition scheme evaluation;
the concentrator starts a minute-level acquisition scheme evaluation, reads the slip time of the acquisition scheme after calculating the delay time DT according to the number of files, starts to read the minute-level acquisition slip time Tw after judging that the delay time DT is reached, and sends a stop minute-level acquisition scheme evaluation after the slip time after three rounds of delay time DT is acquired;
step 2, acquiring node minute data and counting an STA information list which cannot be responded;
after receiving the evaluation information, the CCO informs the point-to-point of the evaluation information to the STA, and counts the node information of the STA which cannot be responded; after all the STAs are informed, the CCO starts all the file data acquisition of the 1 st round and updates the information list of the non-answering STAs, minute-level acquisition scheme evaluation data is obtained after multiple rounds of data acquisition, when the minute-level acquisition scheme evaluation is stopped issued by the concentrator, the CCO clears the local acquisition scheme, clears the acquisition data, and broadcasts 3 times to inform all the STAs;
step 3, acquiring data of the electric energy meter every whole minute in the evaluation stage and circularly storing the data;
after receiving the evaluation information, the STA calculates the maximum data item of the data acquisition of the electric energy meter through the maximum load capacity of the primary channel of the HPLC and the HRF, the STA performs framing, reads the data of the electric energy meter every whole minute, performs cyclic storage, and after receiving the evaluation of the acquisition scheme of the stop minute level issued by the CCO, the STA stops data acquisition of the electric energy meter and clears all local data;
step 4, formally issuing a minute-level acquisition scheme;
the concentrator acquires the slip time after the completion of the evaluation, starts to issue a minute-level acquisition scheme, provides data items required by the acquisition in the acquisition scheme, waits for CCO and STA to acquire data after the completion of the issuing, and starts to read CCO local minute-level data when the slip period is reached, and stores the CCO local minute-level data in the local area for the acquisition master station to read;
step 5, the CCO and the STA carry out a synchronization scheme and set corresponding parameters;
after receiving a minute-level acquisition scheme, the CCO starts point-to-point synchronization to the STA, and after the scheme synchronization is completed, the CCO sets corresponding parameters for periodic reading;
step 6, acquiring electric energy meter data every whole minute in the acquisition stage and storing the data to a local place;
after receiving the minute acquisition scheme, the STA performs data acquisition of the electric energy meter by the vertical horse, the acquired data is circularly stored to the local area every whole minute by the acquisition reference clock, and traversal response is performed from the local storage area of the STA according to the acquisition reference clock and the acquisition number issued by CCO acquisition.
2. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 1, wherein the method comprises the steps of: the HPLC+HRF high-speed dual-mode dual-channel communication mode comprises data acquisition and processing, a communication protocol, data transmission and data processing and analysis, wherein the data acquisition and processing is that the HPLC and the HRF respectively acquire data through own data acquisition units and transmit the data to a computer, and the computer processes and stores the data through the dual-channel communication mode through an acquisition card or an interface board; the communication protocol comprises a data transmission format, a communication frequency and data verification; the data transmission means that data of the HPLC and the HRF are transmitted to a database, and the transmission process comprises data synchronization and data flow control; the data processing comprises data cleaning, data calculation and data testing, more detailed and accurate analysis and test results are obtained by processing and analyzing data acquired by the HPLC and the HRF, and the high-speed and stable data intercommunication between the HPLC and the HRF is realized by adopting an HPLC+HRF high-speed dual-mode dual-channel communication mode, so that the efficiency and the precision of data analysis and processing are improved.
3. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 2, wherein: the HPLC+HRF high-speed dual-mode dual-channel communication adopts a variable window specific trend algorithm to collect data, and the variable window specific trend algorithm valueThe method comprises the following steps:
（1）
in the formula (1), the components are as follows,for the acquisition of the number of data sets +.>Is the window length for observing the acquired data, +.>=j=0,1,2,…n，
To express two channel acquisition forms of HPLC+HRF high-speed dual-mode dual channel, a sign function is definedThe method comprises the following steps:
（2）
to embody the signal of the data change of the electric energy meter in the data acquisition, the output signals of voltage, current, electric quantity and power are output(i=1,2…,n) Mapping and transforming to obtain:
（3）
in the formula (3), the amino acid sequence of the compound,is a voltage signal, a current signal, an electric quantity signal and a power signal, and parametersvIs the rate of change of the signal;
the variable window specific trend algorithm value can be obtained by the formulas (1) to (3)The method comprises the following steps:
(4)
in the formula (4), the amino acid sequence of the compound,for the acquisition of the number of data sets +.>Is a voltage signal, a current signal, an electric quantity signal and a power signal;
the variable window specific trend algorithm carries out trending processing on the sequence by estimating the trend of the data sequence, and self-adaptively determines the local trend according to the window size, so that the influence of the fixed window size on the acquisition result is avoided, and the accurate acquisition of the data is realized.
4. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 1, wherein the method comprises the steps of: the delay time isIn a communication network, the delay time includes a data transmission time, a routing time in the network, and a processing time, for a time required for a data transmission from a data start to a receiving side to finally complete data reception, the delay time being: /> （5）
In the formula (5), N is the number of files of the electric energy meter;
the delay time directly influences the instantaneity and the accuracy of data transmission, and the delay time is measured and evaluated through the prediction model evaluation so as to optimize communication according to actual conditions, thereby improving the performance of the delay time.
5. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 1, wherein the method comprises the steps of: the CCO starts the collection reference clock for collecting all archival data of the 1 st round: （6）
recording end time after first round data acquisition is completed，
The slip time of the minute-level acquisition scheme is as follows: （7）
starting multiple rounds of data acquisition to obtain，
The average slip time is:（8）
in the formula (8), the amino acid sequence of the compound,nthe number of data acquisition rounds.
6. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 1, wherein the method comprises the steps of: the scheme for reading CCO local minute-level data by the concentrator comprises two schemes of calculating and reading data parameters by adopting a data acquisition starting clock according to slip time and directly reading minute-level data without adopting the data acquisition starting clock, and the running condition, the energy consumption condition and the predictive maintenance information of the equipment are obtained by analyzing and processing the minute-level data.
7. The method for collecting low-voltage station clock-level data based on hplc+hrf communication according to claim 5, wherein: the method for calculating the read data parameters by the concentrator through adopting the acquired data start clock by using the slip time comprises the following steps:
firstly, calculating the data start clock acquired at this time according to the slip time as follows:
（9）
in the formula (9), the amino acid sequence of the compound,for the current clock +.>Slip time in minutes;
then each node is adopted to read for 1 time, 2 times and 3 times, and the data acquisition method for 4 times is adopted to acquire voltage, current and power data items;
finally, acquiring data parameters of the Nth round according to the acquisition steps,
the starting clock of the data acquisition of the nth round is as follows: （10）
in the formula (10), the amino acid sequence of the compound,for collecting data, start clock->For the acquisition of data rounds.
8. The method for collecting low-voltage station clock-level data based on hplc+hrf communication according to claim 5, wherein: the method for directly reading the minute-level data by the concentrator without adopting an acquisition start clock comprises the following steps:
directly reading the last 8 times of data of each node without adopting an acquisition starting clock, namelyThe acquisition of voltage, current and power data items is realized through the last 1-last 8 times;
reading the slip time after one round of reading is completed, when the slip timeAnd updating the data density read next time as follows: />And repeating the reading steps to read the minute data parameters.
9. The low-voltage station clock-level data acquisition method based on hplc+hrf communication of claim 1, wherein the method comprises the steps of: the step of the CCO and the STA for synchronizing the scheme and setting corresponding parameters is as follows:
step one, setting a current clock as a starting clock Ts of the whole acquisition scheme, wherein the starting clock of the nth round is as follows:；
step two, setting the number n of each slave node as the ratio of the response data quantity of all data items to the maximum load quantity of HPLC and HRF;
step three, the CCO collects the minute-level data of all the slave nodes STA according to the file sequence, and stores the data to a local waiting concentrator for collection;
and step four, updating the slip time after reading of all nodes in the file is completed, and starting the next round of data acquisition.
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