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Electric quantity data sampling method based on quasi-synchronous sampling

A power data, quasi-synchronous technology, applied in the direction of electrical signal transmission system, non-electrical signal transmission system, signal transmission system, etc., can solve the problems of system synchronization error, synchronization sampling is difficult to achieve, etc., to verify synchronization error and improve reliability , The effect of simplifying the circuit

Inactive Publication Date: 2019-12-10
YUNNAN ENERGY RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the output frequency of the phase-locked loop lags behind the frequency of the power grid, there is a synchronization error in the system, and strict synchronization sampling is difficult to achieve. Therefore, a power data sampling method that eliminates synchronization errors is needed.

Method used

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  • Electric quantity data sampling method based on quasi-synchronous sampling
  • Electric quantity data sampling method based on quasi-synchronous sampling
  • Electric quantity data sampling method based on quasi-synchronous sampling

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as Figure 1-3 A power data sampling method based on quasi-synchronous sampling is shown, including the following steps:

[0027] S1. Prepare a certain number of sample forms, and draw quantitative review sample forms from them;

[0028] S2. Use the collector to collect the power data of the downlink electric meter, process the data, and send it to the GSM network after protocol encapsulation;

[0029] S3. Use the self-service query terminal to collect the power data of the sample meter;

[0030] S4. Use the concentrator to collect the data transmitted by the collector, and package and send the data;

[0031] S5. The master station uses the network to receive the data transmitted by the concentrator and conduct automatic analysis;

[0032] S6, inputting the manually queried data into the master station for analysis;

[0033] S7. Demonstrate the analysis results according to the quasi-synchronous theory, and draw the final sampling conclusion;

[0034] The tota...

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Abstract

The invention discloses an electric quantity data sampling method based on quasi-synchronous sampling, and the method comprises the following steps: preparing a certain number of sample tables, and extracting a quantitative recheck sample table from the sample tables; using the collector for collecting electric quantity data of the downlink electric meter, processing the data, and sending the datato the GSM network after protocol encapsulation; acquiring electric quantity data of the sample tables by using a self-service query terminal; using the concentrator for collecting the data transmitted by the collector and packaging and sending the data; wherein the main station receives the data transmitted by the concentrator by using a network and automatically analyzes the data; inputting themanually queried data into a main station for analysis; and demonstrating an 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, the electric quantity data is collected through the quasi-synchronous sampling method, namely, equal-interval sampling, synchronization with the frequency of a power grid is not needed, and therefore influences caused by synchronization errors are avoided.

Description

technical field [0001] The invention relates to the field of power data sampling, in particular to a power data sampling method based on quasi-synchronous sampling. Background technique [0002] Power data sampling means that the power department collects the power operation data of the electric meter in a certain area in a certain way. After calculation and analysis, the power operation status of the area is obtained, which provides a theoretical basis for subsequent power dispatching or facility construction. Currently, the commonly used The method is equal-interval synchronous sampling and its data processing method, but when synchronous sampling method is used to measure electrical parameters, the sampling interval is required to be synchronized with the grid frequency, so an external hardware phase-locked loop circuit is used in this design to track the grid frequency , and automatically updates the clock to change the sampling frequency. Since the output frequency of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C17/02G08C19/00G08C23/06
CPCG08C17/02G08C19/00G08C23/06
Inventor 赵煜张明宇杨玺黄孟阳茹毅刘士诚张国莹贾开程
Owner YUNNAN ENERGY RES INST CO LTD