The article describes the creation of a real-time database for energy management systems using object-oriented technology. This database is designed to be more open and compatible compared to traditional relational or hierarchical databases. By using dynamic modeling based on meta-data and meta-rules, the database can easily adapt to different applications without the need for programming. The database also utilizes parallel cloning technology to improve data access speed and meet the needs of multiple applications. Testing has shown that this database successfully meets the requirements of real power systems.