复杂电力系统实时暂态安全分析的动态矩阵等值方法

THE DYNAMIC MATRIX EQUIVALENT METHOD FOR TRANSIENT SECURITY ANALYSIS IN POWER SYSTEMS

联合电力系统结构复杂，要进行全局的暂态安全分析比较困难，因此提出了采用分解和协调理论的局部暂态安全分析和监测方法。在可能出现暂态稳定问题的大容量发电厂分别进行暂态安全分析和监测，将系统分为内部系统和外部系统。内部系统为待监测的大容量发电厂和它所连接的输电线路，其余部分为外部系统。外部系统采用动态矩阵等值方法，推导出它的计算电势和矩阵等值导纳，化简后的系统计算简便，可提高管态安全分析和监测的实时性与实用性。

Due to the complicated construction of interconnection power system. it is very difficult to analyse the transient security as a whole system. There fore. the method for local transient security analysis and supervision by means of decomposition and coordination is proposed. The whole system is decomposed into interior and external system. The large capacity power stations and their power lines belong in the interior system. By using the dynamic gnatrix equivalent method,the computational emf and equivalent admittance matrix of the external system can be calculated. and the whole system is thus simplified. Therefore, the ability adaptable to real time and practicability of security analysis are greatly increased.