电能量计量计费系统中实时数据库的实现算法  

IMPLEMENTATION OF REAL-TIME DATABASE IN POWER ENERGY BILLING SYSTEM

作　　者：丁文杰[1] 孙新亚[1] 朱善君[1] 吉吟东[1] 

机构地区：[1]清华大学自动化系,北京市100084

出　　处：《电力系统自动化》2002年第8期69-72,共4页Automation of Electric Power Systems

摘　　要：研究并给出了电能量计量计费系统中实时数据库的实现算法。通过分析现有系统的弊端 ,表明了实时数据库实现的必要性 ,并给出了实时数据库的具体实现。其系统结构采用多线程面向对象的方法 ,存储采用两层二阶平衡 B树和时间定位索引的方法实现 ,运算中详细描述了系统中模拟处理的方法。从数据量、读写效率、运算效率和写库效率等方面进行了性能测试 ,表明了该算法的优越性。同时也指出了系统中的一些不足之处。The shortcomings of present systems make it necessary to im plem ent the real- time database.The algorithm of a real- tim e database RTDB in the power energy billing system is studied and its concrete implementation is given.The system structure uses object- oriented methods and multi- thread.Its data storage structure is based on the two- layer two- order balance B Tree and the index sorted by time.The simulative processing method for calculation is described in detail. Perform ance of the algorithm is tested in such aspects as data quantity,I/ O efficiency,calculation efficiency and the ability of writing to database.Testing results show the advantages and the insufficiency to be improved of the algorithm.

关 键 词：实时数据库 电能量计量计费系统 面向对象 多线程 算法 电网调度自动化 

分 类 号：TM769[电气工程—电力系统及自动化]