Parallel real-time database system and data management method thereof for power system

A power system and database technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as low efficiency, and achieve the effect of supporting global calculation and improving data operation performance.

Active Publication Date: 2012-10-24
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. For tables with a relatively large amount of data, the efficiency of certain access operations is low, such as conditional retrieval operations on a table with 200,000 rows
[0004] 2. The existing real-time database uses shared memory as the storage medium, and can only be installed on one machine, which is inevitably limited by the memory and CPU load of the single machine
The real-time database used by the current scheduling automation support system cannot break through this limitation

Method used

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  • Parallel real-time database system and data management method thereof for power system
  • Parallel real-time database system and data management method thereof for power system
  • Parallel real-time database system and data management method thereof for power system

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Embodiment Construction

[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] The power system-oriented parallel real-time database system provided by the present invention is formed by connecting N real-time database nodes and a metadata relational subsystem through a communication network, wherein each real-time database node has a real-time database server. N is a natural number. The parallel real-time database system structure oriented to electric power system provided by the present invention is as follows: figure 1 shown.

[0045] Each real-time database server contains a global real-time database management system, a local real-time database management system, a communication manager and a local real-time database.

[0046] 1. Communication manager: transmit messages and data between nodes in the parallel real-time database system, and provide reliable communication service functio...

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Abstract

The invention relates to a real-time data management technique in the technical field of power system control, in particular to a parallel real-time database system and a data management method thereof for a power system. The database system comprises N real-time database nodes and a metadata management subsystem, wherein the N real-time database nodes are connected with the metadata management subsystem through a communication network, and the metadata management subsystem is used for storing and managing distribution modes of the parallel real-time database system. According to the parallel real-time database system and the data management method thereof, the data manipulation performance of the parallel real-time database system can be remarkably improved under the condition that the database nodes are enough.

Description

technical field [0001] The invention relates to a real-time data management technology in the technical field of power system control, in particular to a parallel real-time database system oriented to a power system and a data management method thereof. Background technique [0002] In the existing power dispatching technical support system, a real-time database is used to store and manage real-time data such as remote measurement and remote signaling. With the development of the power grid, the amount of real-time measurement data continues to increase, and the efficiency and storage bottlenecks of the real-time database used by the existing dispatch automation system are becoming more and more obvious: [0003] 1. For tables with a relatively large amount of data, the efficiency of certain access operations is low, such as performing conditional retrieval operations on a table with 200,000 rows. [0004] 2. The existing real-time database uses shared memory as a storage m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 孙其强李立新狄方春杨秀峰
Owner CHINA ELECTRIC POWER RES INST
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