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仿真是研究电力系统的重要工具.传统的电力系统时域仿真基于离散时间积分求解状态变量运动轨迹,无法自动确定仿真范围和步长.文中介绍了一种基于离散事件的仿真方法——量子化状态系统(quantized state systems,QSS)仿真,并在此基础上提出了一种时空自律的仿真方法.该方法将系统的动态变化过程描述为一系列按照时间顺序发生的事件,并根据输入量阈值自动确定仿真范围.算例分析验证了该方法在保证计算准确的同时,能够自适应调整仿真的范围和步长.“,”Simulation is an important way for studying the characteristics of power systems.It can be noticed that the conventional time domain simulation methods discretize time and compute the integral to obtain the trajectory of state variables.These methods are usually unable to automatically determine the simulation scope and time-step.The new idea of discrete event simulation (quantized state systems,QSS) was introduced to solve the above problem.Based on the QSS method,a spatio-temporally self-regulated simulation method was proposed.This method slices the system dynamics into a series of chronological events,and it can automatically determine the simulation scope and time-step by setting input thresholds.The feasibility of the proposed method including accuracy,self-regulation characteristics and time-saving feature was validated with two examples.