Studies on simulation platform for low frequency oscillation analysis and control

Based on the power system analysis software, a method for establishing a simulation platform for large scale power system on which low frequency oscillation characteristic extraction, model identification, damping controller design and closed-loop validation can be conducted. Take Power System Analysis Software Package (PSASP) and its User Programming Interface (UPI) functional module as an example, the architecture of the platform is introduced by integration of a C++ matrix math library. Firstly, convergence, accuracy and reliability of the whole programming module (analysis software plus user´s program) are guaranteed by the simulation platform. Secondly, due to C++ matrix math library and C++ programming environment are adopted, the platform is good for program transplantation and computational speed enhancement. The methodology of establishing such a simulation platform also can be extended to other power system analysis softwares and programming environments. Simulation results on the New England 10-machine 39-bus system verify the applicability and validity of the platform.