In the smart grid dispatching and control system

the explosive growth of historical data storage scale and the onrush of massive historical data affect the efficiency of historical data access. To meet the demand for efficient access to historical data

an all-new solution for historical data service is proposed. The addition of historical data buffers is intended for buffer management of hot grid data to improve data processing efficiency and reduce historical database load. The task allocator is optimized for work coordination between data cache and historical database to effectively manage and schedule historical data services. The session monitoring mechanism of historical data is designed for real-time monitoring of database session state

to ensure the security and stability of historical data service. Practice has peroved that the cache based historical data service is able to meet the data access demand in the explosive mass data scenarios

while protecting the safety and stable operation of the power grid dispatching and control system.