Implications of Nonlinear Control Over Traditional Control for Alleviating Power System Stability Problem

One of the major ways to improving the power system stability is the implication of highly effective technology in control system design. Linear controllers are usually designed through approximate linearization of a nonlinear system around a single operating condition that is not effective in severe contingencies and stressed operating conditions. In this regard, the design and application of nonlinear control strategy is the best-suited solution. The nonlinear controllers can be effectively designed through exact linearization of a nonlinear system and therefore the states of the system do not lose their originality. Moreover, nonlinear controllers are not only suitable for multiple operating points but also able to mitigate small as well as large disturbances. Based on the above requirements, authors in this research aim to investigate the dynamic instability problem of a power system and its alleviation through deployment of nonlinear controller.