A method for online analyzing excitation systems performance based on PMU measurements

A method based on synchronized phasor measurement technology for analyzing and evaluating the dynamic regulating performance of excitation system using dynamic electrical data acquired by phasor measurement unit (PMU) is proposed. Combined with an engineering processing of corresponding excitation system performance parameters, the method realizes the calculation and analysis of the main excitation system performance indexes through detecting and extracting the course of a generator disturbance and its excitation system response. Meanwhile, its whole software system functions are designed and realized based on the system structure of a WAMS. It is concluded through the method introduction and practical project applications that compared with conventional analysis methods, this method has the advantages of online analysis, offline research, simpleness and practicality, convenient use, and its computed results can be treated as an important reference for the evaluation of dynamic regulating performances of a excitation system.