CN110555983A - Electric quantity data sampling method based on quasi-synchronous sampling - Google Patents
Electric quantity data sampling method based on quasi-synchronous sampling Download PDFInfo
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- CN110555983A CN110555983A CN201910852363.0A CN201910852363A CN110555983A CN 110555983 A CN110555983 A CN 110555983A CN 201910852363 A CN201910852363 A CN 201910852363A CN 110555983 A CN110555983 A CN 110555983A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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Abstract
The invention discloses an electric quantity data sampling method based on quasi-synchronous sampling, which comprises the following steps: preparing a certain amount of sample tables, and extracting quantitative rechecked sample tables from the sample tables; acquiring electric quantity data of a downlink ammeter by using a collector, processing the data, and sending the data to a GSM network after protocol encapsulation; collecting electric quantity data of the sample meter by using a self-service query terminal; collecting data transmitted by the collector by using a concentrator, and packaging and sending the data; the master station receives the data transmitted by the concentrator by using the network and performs automatic analysis; inputting the manually inquired data into a master station for analysis; and (5) demonstrating the analysis result according to a quasi-synchronization theory to obtain a final sampling conclusion. According to the electric quantity data sampling method based on quasi-synchronous sampling, electric quantity data are collected by the quasi-synchronous sampling method, namely equal-interval sampling is carried out, and synchronization with the frequency of a power grid is not needed, so that influence caused by synchronization errors is avoided.
Description
Technical Field
The invention relates to the field of electric quantity data sampling, in particular to an electric quantity data sampling method based on quasi-synchronous sampling.
Background
the electric quantity data sampling refers to that an electric power department acquires electric quantity operation data in electric meters in a certain area in a certain mode, the electric power operation condition of the area is obtained after calculation and analysis, a theoretical basis is provided for subsequent electric power scheduling or facility construction, an equal interval synchronous sampling and data processing method is commonly used at present, but when a synchronous sampling method is adopted for measuring electric parameters, the sampling interval and the power grid frequency are required to be synchronous, so that an external hardware phase-locked loop circuit is adopted in the design to track the power grid frequency, and a clock is automatically updated to change the sampling frequency. Because the output frequency of the phase-locked loop lags behind the frequency of the power grid, the system has a synchronization error, and strict synchronous sampling is difficult to realize, so that an electric quantity data sampling method for eliminating the synchronization error is needed.
Disclosure of Invention
The invention mainly aims to provide an electric quantity data sampling method based on quasi-synchronous sampling, which can effectively solve the problems in the background technology.
in order to achieve the purpose, the invention adopts the technical scheme that:
A quasi-synchronous sampling-based electric quantity data sampling method comprises the following steps:
S1, preparing a certain amount of sample tables, and extracting quantitative recheck sample tables from the sample tables;
S2, collecting the electric quantity data of the downlink electric meter by using a collector, processing the data, and sending the data to a GSM network after protocol encapsulation;
S3, collecting electric quantity data of the sample meter by using the self-service inquiry terminal;
s4, collecting the data transmitted by the collector by using the concentrator, and packaging and sending the data;
S5, the master station receives the data transmitted by the concentrator by using the network and performs automatic analysis;
S6, inputting the manually inquired data into the master station for analysis;
And S7, demonstrating the analysis result according to the quasi-synchronization theory to obtain a final sampling conclusion.
Preferably, the total number of the sample tables extracted in the step S1 is 150, and the sample tables are equally divided into A, B, C3 groups, wherein 15 sample tables are randomly extracted according to a proportion of 10% and marked.
Preferably, in step S2, the up rows of the A, B, C3 groups of sample meters are respectively connected to a collector to collect the electric quantity data of each group of sample meters, wherein the electric quantity data of the group a sample meters are uploaded through carrier signals, the electric quantity data of the group B sample meters are uploaded through bus signals, and the electric quantity data of the group C sample meters are uploaded through micropower wireless signals.
preferably, in the step S3, the handheld electric quantity data acquisition terminal is used to acquire the electric quantity data of the extracted recheck sample table, and marks are made to correspond to each other one by one.
Preferably, in step S4, 3 concentrators are provided, and are respectively configured to correspondingly receive the electric quantity data uploaded by the A, B, C3 groups of collectors, and verify the integrity of the data, and then package and upload the sorted electric quantity data.
Preferably, in step S5, the master station server receives data uploaded by the concentrator by using transmission methods such as GPRS/CDMA, ethernet, optical fiber, and the like, and performs calculation and analysis on the uploaded electric quantity data to output a result.
preferably, in step S6, the power data collected by the handheld power data collection terminal is imported into the master station server by using a data cable, and the power data is analyzed and calculated to output a rechecking result.
Preferably, in the step S7, the quasi-synchronization theory is used to compare and demonstrate the two results, and obtain a final sampling conclusion, and the electric quantity data acquisition is completed after recording and storing.
Compared with the prior art, the invention has the following beneficial effects: by removing the sampling frequency synchronization link on hardware, the circuit is simplified, the reliability is improved, the sampling period does not need to be strictly synchronous with the signal period, and by increasing the number of the sampling periods and setting a proper sampling frequency, the ideal accuracy can be obtained through an algorithm; meanwhile, manual sampling data is additionally set and used as a double check demonstration, so that synchronous errors are verified.
drawings
Fig. 1 is a schematic diagram of a sampling flow of an electric quantity data sampling method based on quasi-synchronous sampling according to the present invention;
FIG. 2 is a flow chart of the working principle of a collector of the electric quantity data sampling method based on quasi-synchronous sampling of the invention;
Fig. 3 is a flow chart of the working principle of the concentrator of the electric quantity data sampling method based on quasi-synchronous sampling of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1 to 3, a method for sampling electrical quantity data based on quasi-synchronous sampling includes the following steps:
S1, preparing a certain amount of sample tables, and extracting quantitative recheck sample tables from the sample tables;
s2, collecting the electric quantity data of the downlink electric meter by using a collector, processing the data, and sending the data to a GSM network after protocol encapsulation;
S3, collecting electric quantity data of the sample meter by using the self-service inquiry terminal;
S4, collecting the data transmitted by the collector by using the concentrator, and packaging and sending the data;
S5, the master station receives the data transmitted by the concentrator by using the network and performs automatic analysis;
s6, inputting the manually inquired data into the master station for analysis;
S7, demonstrating the analysis result according to the quasi-synchronization theory to obtain a final sampling conclusion;
The total number of the sample tables extracted in the step S1 is 150, and the sample tables are equally divided into A, B, C3 groups, wherein 15 sample tables are randomly extracted according to the proportion of 10% and are marked; in the step S2, first, the uplinks of the A, B, C3 groups of sample meters are respectively accessed to a collector to collect the electric quantity data of each group of sample meters, wherein the electric quantity data of the group a sample meters are uploaded through carrier signals, the electric quantity data of the group B sample meters are uploaded through bus signals, and the electric quantity data of the group C sample meters are uploaded through micropower wireless signals; in the step S3, collecting the electric quantity data of the extracted recheck sample meter by using a handheld electric quantity data collection terminal, and marking the electric quantity data to be in one-to-one correspondence; in step S4, 3 concentrators are provided, which respectively and correspondingly receive the electric quantity data uploaded by A, B, C3 groups of collectors, verify the integrity of the data, and then package and upload the sorted electric quantity data; in step S5, the master station server receives data uploaded by the concentrator by using transmission methods such as GPRS/CDMA, ethernet, optical fiber, and the like, and performs calculation analysis on the uploaded electric quantity data to output a result; in the step S6, the electric quantity data collected by the handheld electric quantity data collection terminal is imported into the master station server by using the data cable, and the electric quantity data is analyzed and calculated in the same way, and a rechecking result is output; and step S7, comparing and demonstrating the two results by using a quasi-synchronization theory, obtaining a final sampling conclusion, recording, reserving files and storing, and then finishing the electric quantity data acquisition.
It should be noted that the invention is an electric quantity data sampling method based on quasi-synchronous sampling, comprising equally dividing 150 sample meters into A, B, C3 groups, connecting a collector to the electric meter of each group, randomly extracting 15 recheck sample meters in 150 sample meters according to 10% ratio, marking, when the collector starts to collect circuit data, collecting the electric quantity data of the extracted recheck sample meters by using a hand-held electric quantity data collecting terminal, marking, corresponding one by one, arranging a concentrator at the ascending end of the collector in A, B, C3 group, receiving the electric quantity data uploaded by A, B, C3 groups of collectors by using the concentrator, checking the integrity of the data, packing the sorted electric quantity data, uploading the circuit data to a master station server by using transmission modes such as GPRS/CDMA, Ethernet, optical fiber and the like, meanwhile, electric quantity data collected in the handheld electric quantity data collecting terminal are led into the master station server, therefore, after the original data are subjected to the quasi-synchronization processing, the frequency spectrum leakage phenomenon generated in the DFT conversion process due to non-whole period sampling is reduced, the amplitude of the voltage or current of each subharmonic component of the processed data can be calculated after the DFT conversion is carried out on the processed data, a series of data such as total effective voltage, current, power and harmonic content can be obtained through further calculation, and the data inaccuracy caused by power grid frequency synchronization errors is avoided.
it should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. a quasi-synchronous sampling-based electric quantity data sampling method is characterized by comprising the following steps:
S1, preparing a certain amount of sample tables, and extracting quantitative recheck sample tables from the sample tables;
S2, collecting the electric quantity data of the downlink electric meter by using a collector, processing the data, and sending the data to a GSM network after protocol encapsulation;
s3, collecting electric quantity data of the sample meter by using the self-service inquiry terminal;
s4, collecting the data transmitted by the collector by using the concentrator, and packaging and sending the data;
S5, the master station receives the data transmitted by the concentrator by using the network and performs automatic analysis;
S6, inputting the manually inquired data into the master station for analysis;
And S7, demonstrating the analysis result according to the quasi-synchronization theory to obtain a final sampling conclusion.
2. the electrical quantity data sampling method based on quasi-synchronous sampling as claimed in claim 1, wherein the total number of sample tables extracted in step S1 is 150, and the sample tables are equally divided into A, B, C3 groups, wherein 15 duplicate check sample tables are randomly extracted at a ratio of 10% and marked.
3. the electric quantity data sampling method based on quasi-synchronous sampling according to claim 1, wherein in step S2, the up rows of A, B, C3 groups of sample meters are respectively connected to a collector to collect the electric quantity data of each group of sample meters, wherein the electric quantity data of the group a sample meters is uploaded through carrier signals, the electric quantity data of the group B sample meters is uploaded through bus signals, and the electric quantity data of the group C sample meters is uploaded through micropower wireless signals.
4. the electric quantity data sampling method based on quasi-synchronous sampling according to claim 1, wherein in step S3, the electric quantity data of the extracted recheck sample table is collected by using a handheld electric quantity data collection terminal, and marked in a one-to-one correspondence manner.
5. The electric quantity data sampling method based on quasi-synchronous sampling according to claim 1, wherein in step S4, 3 concentrators are provided, which respectively receive the electric quantity data uploaded by A, B, C3 groups of collectors, and verify the integrity of the data, and then package and upload the sorted electric quantity data.
6. The electric quantity data sampling method based on quasi-synchronous sampling according to claim 1, wherein in step S5, the master station server receives the data uploaded by the concentrator by using transmission methods such as GPRS/CDMA, ethernet, optical fiber, and the like, and performs calculation and analysis on the uploaded electric quantity data to output a result.
7. the electric quantity data sampling method based on quasi-synchronous sampling according to claim 1, wherein in step S6, the electric quantity data collected in the handheld electric quantity data collection terminal is imported into the master station server by using a data cable, and the electric quantity data is analyzed and calculated to output a rechecking result.
8. the electric quantity data sampling method based on the quasi-synchronous sampling as claimed in claim 1, wherein in the step S7, the quasi-synchronous theory is used to compare and demonstrate the two results, and obtain the final sampling conclusion, and the electric quantity data acquisition is completed after the record is saved.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620774A (en) * | 2009-07-26 | 2010-01-06 | 浙江金卡高科技工程有限公司 | Data short message collection system for gas meter |
| CN101644753A (en) * | 2009-08-20 | 2010-02-10 | 宁波三星电气股份有限公司 | Debugging method of centralized meter reading system |
| CN102855745A (en) * | 2012-09-17 | 2013-01-02 | 上海桑锐电子科技有限公司 | Handheld wireless meter reader and remote data synchronous inquiring method thereof |
| CN104502692A (en) * | 2014-12-02 | 2015-04-08 | 国家电网公司 | Power abnormality detection method and central processing device |
| CN104965187A (en) * | 2015-06-23 | 2015-10-07 | 国家电网公司 | Intelligent watt-hour meter accelerated degradation testing method based on key devices |
| CN104992548A (en) * | 2015-07-16 | 2015-10-21 | 国网河南省电力公司漯河供电公司 | Remote meter reading system |
| CN105206035A (en) * | 2015-09-21 | 2015-12-30 | 国网上海市电力公司 | Automatic detecting system and method for collection terminal functions |
| CN105809942A (en) * | 2016-03-17 | 2016-07-27 | 国家电网公司 | Data processing method and device for electricity information collection system |
| CN205563982U (en) * | 2016-01-25 | 2016-09-07 | 数派科技（天津）有限公司 | Remote meter -reading system |
| CN106443562A (en) * | 2016-09-30 | 2017-02-22 | 千江（上海）信息科技有限公司 | Networked online inspection system for electric energy metering devices |
-
2019
- 2019-09-09 CN CN201910852363.0A patent/CN110555983A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620774A (en) * | 2009-07-26 | 2010-01-06 | 浙江金卡高科技工程有限公司 | Data short message collection system for gas meter |
| CN101644753A (en) * | 2009-08-20 | 2010-02-10 | 宁波三星电气股份有限公司 | Debugging method of centralized meter reading system |
| CN102855745A (en) * | 2012-09-17 | 2013-01-02 | 上海桑锐电子科技有限公司 | Handheld wireless meter reader and remote data synchronous inquiring method thereof |
| CN104502692A (en) * | 2014-12-02 | 2015-04-08 | 国家电网公司 | Power abnormality detection method and central processing device |
| CN104965187A (en) * | 2015-06-23 | 2015-10-07 | 国家电网公司 | Intelligent watt-hour meter accelerated degradation testing method based on key devices |
| CN104992548A (en) * | 2015-07-16 | 2015-10-21 | 国网河南省电力公司漯河供电公司 | Remote meter reading system |
| CN105206035A (en) * | 2015-09-21 | 2015-12-30 | 国网上海市电力公司 | Automatic detecting system and method for collection terminal functions |
| CN205563982U (en) * | 2016-01-25 | 2016-09-07 | 数派科技（天津）有限公司 | Remote meter -reading system |
| CN105809942A (en) * | 2016-03-17 | 2016-07-27 | 国家电网公司 | Data processing method and device for electricity information collection system |
| CN106443562A (en) * | 2016-09-30 | 2017-02-22 | 千江（上海）信息科技有限公司 | Networked online inspection system for electric energy metering devices |
Non-Patent Citations (1)
| Title |
|---|
| 柏华东等: ""电参量测量中准同步采样算法分析及精度提高方法"", 《江苏电器》 * |
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