Design of Additional Damping Controllers with Subsynchronous Oscillation Damping Effectiveness

When we research the suppression problem of subsynchronous oscillation based on time domain simulation method, we find the appropriate parameters for phase compensation and amplitude gaining links are important to the damping effect of the additional damping controllers, supplementary excitation damping controller(SEDC) and subsynchronous supplementary damping controller(SSDC). Some scholars attempt to optimize parameters by various optimization algorithms. But when they are applied in the complex system, there might have some practical problems. A novel method--simulation test method, which is simple but practical, is introduced in this paper. We can effectively identify the compensation phase and gain coefficient by this way, combined with test signal method. The specific design of SEDC and SSDC is realized in this paper. With these parameters obtained, SEDC and SSDC have a good inhibitory effectiveness. So the feasibility of this new method is validated. It is of great significance for engineering research. Keyword subsynchronous oscillation(SSO);supplementary excitation damping controller(SEDC); subsynchronous supplementary damping controller (SSDC); time domain simulation method