考虑南方电网500kV网架的广西电网潮流分析

Power flow analysis for Guangxi Power Grid considering the 500 kV frame of China Southern Power Grid

广西电网众多联络线采用等值建模方式,不能准确描述联络线在外网的连接情况,导致广西中调计算联络线转移潮流严重失真。提出以广西中调模型为核心,采用模型拼接技术合并南网总调模型,生成考虑南方电网500kV网架的广西电网模型,并采用拼接模型进行量测时差补偿、状态估计、潮流计算。该功能已经在广西中调进行部署和应用,实现了对广西电网联络线潮流转移的有效模拟。

Most of the tie lines in Guangxi Power Grid are modeled by the equivalent modeling method,which cannot accurately describe the connection condition with outer power systems,resulting in the serious distortion in transferred power flow calculation.A novel model,which combined Guangxi Power Grid model with China Southern Power Grid model by using model combination technology,was set up in this paper.It can realize time-delay compensation,state estimation and power flow calculation.This function was deployed and applied in the provincial dispatching of Guangxi Power Grid,which could effectively simulate the transferred power flow in the tie lines for Guangxi Power Grid.