基于分布式流体网络的电力系统机电扰动传播

Study on Propagation of Electromechanical Disturbance in Power Systems Based on Distributed Fluid Network

为研究电力系统中机电扰动的传播特性,基于流体管道网络时域建模的思想,提出了一种新的研究电力系统机电扰动传播的仿真模型。该模型能够反映电力系统的拓扑结构,合理地考虑发电机的内电抗。最后将该模型应用于5台发电机组成的仿真系统,并与PSS/E仿真结果对比,证明了电力系统分布式流体网络模型的正确性及发电机内电抗对机电扰动传播影响的显著性。电力系统分布式流体网络模型为机电扰动传播的研究提供了一种新的思路。

To reveal propagation characteristics of electromechanical disturbance in power system, based on the thinking of time-domain modeling of distributed fluid pipeline network a new simulation model for the research on the propagation of electromechanical disturbance in power system, which can reflect topological structure of power system and consider internal reactance of generators reasonably, is proposed. Applied the proposed model to a simulation system composed of five generators and comparing the simulation results with those by PSS/E, the correctness of the distributed fluid network model is proved and the remarkable influence of internal reactance of generators on the propagation characteristics of electromechanical disturbance is revealed. Results of the presented research offer a new thinking for the research on propagation of electromechanical disturbance in power system.