非全相运行的电力系统多模块数字实时仿真模型

A digital real-time simulation model of power system in non-full-operating state

在电力系统规划中,设计与检验电力系统的保护、控制以及调度设备时,动态模拟装置起着重要的作用。应用多模块耦合算法,将一个典型的高阶电力系统分解为多个低阶模块,然后分别对各低阶模块进行建模,各模块之间通过其端口的电压与电流关系进行耦合。对一个典型系统的非全相运行状态建立了其相应的多模块耦合算法模型,并且在高性能的PC机系统上以较小的仿真步长实现了其相应的数字实时仿真。系统实时运行的结果表明,提出的电力系统非全相运行状态的多模块耦合算法模型能够满足实时仿真系统的要求。

The dynamic simulation of the electric power system is more and more important in planning the electric power system,designing and testing its protective,control and dispatch equip-ment.With the multiple-module-coupled algorithm,a typical high-order electric power system is divided into multiple low-order modules,which are then modeled respectively.They are coupled to-gether through the voltages and currents on their ports.A multiple-module-coupled algorithm model for a typical electric power system in non-full-operating state is presented and its corresponding digital real-time simulation on the high-performance PC system is carried out with a smaller step size.The real-time simulative results show that this algorithm model is correct and meets the require-ments of real-time simulation system.