Transient stability enhancement of power system with instability tolerant synchronous generator

摘要

Out-of-step or out-of-synchronism is the loss of magnetic coupling between the rotor and the stator of a synchronous generator. Recent research has shown that loss of synchronism condition of a synchronous generator due to the local and inter-area oscillations can cause severe damage to the machine and power system. In other words, if these oscillations do not damp, the power system will become unstable. It is worth highlighting that, along with the growth of grid interconnections, the stability has been a significant concern in the operation of the power systems, and the generators play a substantial role in this issue. Consequently, to reduce these oscillations and failures, the instability tolerant synchronous generator (ITSG), presented in this study, applied in the critical points of the network. The proposed generator is designed in such a way that it has a higher specific magnetic loading to stabilise the power system much more. The simulation tests demonstrate that the applied generator is effective in stabilising the network and improving the transient stability of the system in response to oscillations.