PSS参数计算与仿真综合软件的设计与开发

Design and Development of PSS Parameters Calculation and Simulation Software

针对电力系统稳定器(PSS)参数计算软件不能对计算出的参数进行仿真校核,会给PSS整定试验的开展带来不便的问题,在电力系统数学模型的基础上,针对目前国内普遍应用的PSS1A、PSS2A/2B模型,结合工程实际的需要和相关标准的要求,基于Matlab软件,采用单振荡频率和多振荡频率的相位补偿法,设计、开发了集PSS参数计算与仿真校核于一体的、具有良好人机交互界面的PSS参数计算综合软件;在Simulink仿真工具上搭建了配套的单机-无穷大电力系统数字仿真系统,用于对所整定的PSS抑制低频振荡的能力进行仿真校核,以便将理论计算的PSS参数设定到励磁调节器上。广西某水电厂的PSS参数计算以及数字仿真校核结果表明:所设计的综合软件仿真校核方便,界面简洁,计算结果优良,具有较好的工程实用价值。

Lack of simulation and verification functions in Power System Stabilizer （PSS） parameters calculation leads to uncertainty in PSS setting test. Based on mathematical model of power system, an integrated PSS parameter calculation software is developed. With MATLAB software package, the widely used models of PSS 1A and PSS2A/2B are adopted to meet practical engineering need and relevant standards requirement. Using single-frequency and multi-frequency oscillation phase compensation, the software integrates functions of computation and simulation verification for PSS parameters with a well-designed human-machine interaction interface. Meanwhile, the digital simulation of a single machine-infinite bus power system is built in Simulink to simulate and verify the ability of PSS set to suppress low frequency oscillations. A testing case on certain plant in Guangxi indicates the simplicity, accuracy and convenience of developed software.