Historical data service system used for smart power grid dispatching control system

Abstract

The invention discloses a historical data service system used for a smart power grid dispatching control system, and inquires historical data on the basis of a cache management mechanism and a historical library access monitoring mechanism. The historical data service system comprises a management control module, a data cache region module and a relational database interaction module, wherein the management control module consists of a curve template and a task distributor module; the data cache region module consists of a data cache region, a data index table, a cache data synchronization module and a data point replacement algorithm module; and the relational database interaction module consists of a data interaction module and a dialogue monitoring module. The historical data service system adopts a historical data cache management mechanism to improve service query efficiency and lighten relational database load. A database dialogue monitoring mechanism is adopted to improve service stability.

Description

technical field [0001] The invention relates to the field of intelligent dispatching control, in particular to the field of optimization control of historical data service in dispatching control of smart grid. Background technique [0002] In the smart grid dispatching control system (referred to as "D5000 system"), the historical data of a large number of equipment such as the voltage value and frequency value of the busbar, the active value, reactive value, and current value of the AC line segment endpoint, transformer winding, circuit breaker, etc. Values ​​are provided by the historical data service, and then the historical data changes are displayed in the form of curves or tables, which is convenient for dispatchers to monitor the operation status of the power grid intuitively. [0003] With the rapid development and expansion of the power grid, the power grid dispatching control system records more comprehensive power equipment status, resulting in a continuous increa...

AI Technical Summary

Problems solved by technology

The historical data service mainly has the following problems: in the face of massive historical data, the historical data service lacks a stable and efficient data query mechanism; when the application of the D5000 system accesses historical data, it lacks a real-time monitoring mechanism for database session status

[0006] In the D5000 system, the existing historical data service is difficult to solve all the above problems. It is necessary to propose an efficient and stable historical data service system to meet the fast query request of massive historical data and reduce the load of relational database

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