电力系统是一个大规模、时变的复杂系统，在国民经济中有非常重要的作用。电力系统数字仿真已成为电力系统研究、规划、运行、设计等各个方面不可或缺的工具，特别是电力系统新技术的开发研究、新装置的设计、参数的确定更是需要通过仿真来确认。-Electric power system is a large scale and the time of complex system, in the national economy has a very important role. Power system simulation has become a power system research, planning, operation, design and other aspects of the indispensable tools, especially the power system the development of new technology research, new device design, parameter is determined by the simulation to confirm is need.