电网经济运行的评估与优化

提高经济性是电网营运的核心问题,也是智能电网建设的重点内容之一。提出利用能量管理系统(EMS)或广域测量系统(WAMS)进行线网损计算,并与电能量采集表的电能量对比校核和网损对比校核,通过输电线路和变压器在线负载率计算以及网损灵敏度分析,判断电网经济运行状况,再从电网运行方式上和电网结构上优化电网运行,提高电网运行经济性。

The Evaluation and Optimization of Power Network Economic Operation

To improve the economical efficiency is a key issue of power network operation, and one of the important aspects in smart grid building. It is proposed in this paper that based on the calculation of the network power loss in the energy management system (EMS or the wide area measurement system (WAMS, and in comparison of the calculated electric power and power loss with that in electric power collection table, the status of power network economic operation is evaluated through the online load ratio calculation of both lines and transformers and the secitivity analysis of network power loss, and then the power network economic operation is optimized in the network operation model and network structure so to enhance the economical efficiency.