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Method for storing and reading mass data of power quality

A mass data and power quality technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that relational databases cannot meet the increasing demand of quantity and concurrent volume, and achieve storage and high-speed concurrent access , Improve the effect of system access speed

Active Publication Date: 2014-02-19
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development of the power quality monitoring system, the scale of monitoring points continues to expand, and the capacity of monitoring data is increasing. The existing relational database cannot meet the increasing demand for quantity and concurrent volume.

Method used

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  • Method for storing and reading mass data of power quality
  • Method for storing and reading mass data of power quality
  • Method for storing and reading mass data of power quality

Examples

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] 1. If figure 1 As shown, the present invention stores the power quality data in the form of key-value pairs (key-value), uses the key-value pairs to package the data of each monitoring point into index nodes, organizes the index nodes in the form of a tree or a list, and improves the speed of data query .

[0029] Among them, in the key-value pair data, each key (key) corresponds to a value (value). The key is the ID, and the ID of the power quality monitoring device is used as the key; the measured values ​​of all monitoring indicators of this device (such as voltage deviation, frequency deviation, three-phase unbalance, voltage fluctuation and flicker, harmonics, inter-harmonics, etc.) Put it in the data area of ​​the value. In a value area, the monitoring data is analyzed and coded by indicator category, and...

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Abstract

The invention relates to a method for storing and reading mass data of power quality. The method includes the steps that firstly, the mass data of power quality are stored in a key value pair mode; secondly, key value pairs are stored in files in a serialization mode; thirdly, during real-time data read-in, a data area of a monitoring point is positioned according to the ID of equipment, and a corresponding storage area of monitoring data is positioned through an indicator; fourthly, corresponding data in a record slot are read according to an indicator category code of data to be acquired. Because each data file is split into data blocks to be stored through the storage mode of the key value pairs and a data block serves as the minimum unit as for data access in a database, system access speed is improved, and multiple-index and multiple-granularity characteristics and application requirements of the data of power quality are fully taken into consideration in terms of data file management and access modes.

Description

technical field [0001] The invention belongs to a power system, and in particular relates to a method for storing and reading power quality mass data. Background technique [0002] With the development of the power quality monitoring system, the scale of monitoring points is continuously expanding, and the capacity of monitoring data is increasing. The existing relational database cannot meet the increasing demand of quantity and concurrent volume. At present, mainstream real-time databases store data in memory, which can realize fast access to massive data. According to the characteristics of power quality monitoring data, establishing a data model and data processing method suitable for real-time database will improve the massive data processing and high-speed concurrent access capabilities of the power quality monitoring system. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a method for storing and readin...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/2282
Inventor 王同勋
Owner STATE GRID CORP OF CHINA
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