Cloud distributed real-time database system

A distributed real-time, database technology, applied in the field of database systems, can solve the problems of limited capacity and performance, not supporting high frequency access, relational database not supporting distributed deployment and high concurrent access, etc.

Active Publication Date: 2019-09-03
DONGFANG ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The partition fault tolerance of traditional real-time databases is poor, and the capacity and performance are limited by the resources of a single node, which is easy to form resource islands and informati

Method used

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Embodiment Construction

[0075] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0076] 1. Basic definition

[0077] 1) Model and numerical values

[0078] The model of the present invention is an equipment model and a measurement point model for real-time monitoring, and contains information of a CIM model of a typical substation. The value is the collected alarm data of the measurement point, including integer or floating-point values ​​of telemetry, remote signaling, remote control, and remote adjustment, as well as related event alarms.

[0079] Models are categorized as follows:

[0080] Relational model: The power grid CIM model is stored in a relational database.

[0081] Real-time model: key-value class model and value, stored in NoSql database.

[0082] Monitor Models: Models in sharded memory snapshots within the service.

[0083] Flow Monitor Models: Incremental maintenance records for models in Elastic Message Queue. ...

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Abstract

The invention discloses a cloud distributed real-time database system which comprises a real-time database and a real-time service bus. The real-time database comprises a storage layer with a distributed hierarchical structure, a positioning layer and an interface layer; the storage layer stores a real-time model based on a distributed NoSQL database, and the real-time model corresponds to a relational model of a relational database of the power grid system; the positioning layer is used for storing fragmented memory snapshots, and the fragmented memory snapshots comprise monitoring model snapshots, numerical section snapshots, transaction snapshots and the like; the interface layer provides a transaction type component and is used for realizing establishment, access and processing of a fragmented memory snapshot; and the real-time service bus comprises a model loading service, a fat client service and the like. Based on the intelligent power grid regulation and control system CIM model grouping and slicing technology, fat client service real-time calculation processing and thin client quasi-real-time access are achieved, model checking and synchronization functions are expanded, and concurrent control and extension expansibility of the system are improved.

Description

technical field [0001] The invention relates to a database system, in particular to a cloud-based distributed real-time database system for smart grids. Background technique [0002] The traditional distributed real-time database supporting the fourth-generation SCADA / EMS system centers on the shared memory cache and builds monitoring business applications layer by layer; uses the hierarchical index technology of the hash ring to build the access interface of each cache layer , the application service master node collects and collects data and operation instructions, completes calculation and snapshot maintenance, and multicasts the changed data to the standby node to maintain its snapshot. [0003] The partition fault tolerance of traditional real-time databases is poor, and the capacity and performance are limited by the resources of a single node, which is easy to form resource islands and information islands; relational databases do not support distributed deployment and...

Claims

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Application Information

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IPC IPC(8): G06F16/27G06F16/25G06F16/28G06F16/22G06F11/14G06F11/30
CPCG06F11/1458G06F11/3006G06F2201/80G06F2201/805G06F16/22G06F16/25G06F16/27G06F16/28
Inventor 于全喜孔海斌高贞彦唐军沛姜雪梅王飞常晓萌吕秋霞刘春庆谭军光周志辉
Owner DONGFANG ELECTRONICS
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