0　引言随着计算机和通信技术的发展 ,全国许多地区的变电站已实现自动化。集控中心一直监测记录着各变电站母线电压、主变的有功与无功、电容器的投切、有载调压变压器的分接头挡位 ,并将这些数据存储于数据库中。需要这些数据时 ,通过检索即可得到。对这些数据进行分析及计算 0 Introduction With the development of computer and communication technology, substations in many areas across the country have been automatized. Control Center has been monitoring records of the substation bus voltage, the main transformer active and reactive power, capacitor switching, on-load tap changer gear, and these data stored in the database. When you need this data, you can retrieve it by searching. Analyze and calculate these data