地区电网外网等值自动生成系统的开发与应用

外网等值模型必须跟踪外网运行方式的变化以确保地调EMS应用软件的计算精度.为提高地区电网EMS应用软件的实用性,作者开发了自适应的外网等值自动生成系统.该系统利用IEC61970 CIM(Common Information Model)标准从省调EMS系统读取电网模型和实时数据,然后自动为地区电网生成外网等值模型,并按IEC61970 CIS/CORBA(Component Interface Specification/Common Object Request Broker Architecture)规范通过广域网将外网等值模型发送至各地区电网,供地区电网EMS/DTS应用软件使用.该系统的外网模型可灵活定制,可在外网中自动生成或人工指定缓冲网,以满足等值精度和计算速度的要求.该系统实时自动运行,可随时为地区电网提供外网等值模型和相应的实时数据,大大提高了地区电网EMS/DTS应用软件计算结果的正确性.

Development and Application of Real-Time External Network Equivalent System for Sub-Transmission Networks

An external network equivalent model must follow the change of operation modes of the external network in order to ensure computing precision of EMS application software in area network control center.To improve the practicability of EMS software in area network control center,a new system,which can automatically create an online external network equivalent model for EMS/DTS usage of area networks,is realized.According to IEC61970 CIM standard,the system gets the whole network model and its real-time data from the existing EMS of provincial control center,then the system automatically creates an external network equivalent model and sent to area control centers by WAN according to IEC61970 CIS/CORBA standard for further use of area network control center EMS/DTS.External network model can be flexibly made in the equivalent system.Partial buffer system in the external network can be set up automatically or selected manually to balance the equivalent calculation precision and speed.This system runs automatically in online mode,and provides external network equivalent model and corresponding real-time data all the time for area network.This system has been put into practical operation and the operation results show that the correctness of EMS/DTS calculations in area control center is greatly improved by this equivalent system.