基于Matlab/Simulink的电力系统仿真工具箱的开发

Development of a Matlab/Simulink Based Power System Simulation Toolbox

详细介绍了电力系统暂态仿真软件的开发原理,并在此基础上开发了一个基于Matlab/Simulink的电力系统仿真工具箱(power system simulation toolbox,PSST)。该仿真工具箱目前可完成潮流计算,小干扰稳定分析和动态时域仿真等方面的分析和研究,具有使用方便、可扩展性强等优点,克服了常规的大型商业化软件难以添加新模块的缺点,能够无缝地以Simulink模块的形式添加自定义新模块。此外,还可以根据实际仿真精度的要求灵活选用合适的Simulink求解器进行仿真求解而无需修改仿真模型。通过对同一个新英格兰系统进行时域仿真,将PSST和电力系统工具箱(power system toolbox,PST)的仿真结果进行了分析对比,验证PSST仿真结果的有效性和准确性。最后以静止无功补偿器的广域附加阻尼控制器的设计为例阐述了用PSST设计控制器的基本原理和方法。可以看出,PSST非常适合用于电力系统控制方面的研究。

The principle of developing power system transient simulation software is presented in detail, and on this basis a Matlab/Simulink based the power system simulation toolbox （PSST） is developed. At present, PSST can be used in the analysis and research on power flow calculation, small signal stability analysis, time-domain simulation, et al. PSST is convenient to use and possesses such advantages as good extensibility and convenient to use, and it remedies the defect of conventional large-scale commercial software, that it is difficult to add new components to them, therefore PSST can add user-defined new modules seamlessly in the form of Simulink module. Besides, according to the requirement of actual simulation accuracy PSST can also choose appropriate Simulink solver flexibly for the simulation while the simulation model needs not to be modified. To verify the effectiveness and accuracy of simulation results by PSST, taking New England system under a certain fault condition for example, the time-domain simulation results by PSST are analyzed and compared with time-domain simulation results of the same example by power system toolbox （PST）. Finally, taking the design of a wide area supplementary damping controller （WSDC） for SVC as example, the basic principle and method of using PSST for the design of a controller are expounded, and it can be seen from this example that PSST is very suitable for the research on power system control.