Distributed Fault-Tolerant PID Control Strategy for Interconnected Power Systems Triggered by Stochastic Dynamic Events

In this article, A proportional-integral-derivative (PID) control method that is distributed and fault-tolerant is proposed to study the load frequency control problem of interconnected power systems. First, in power system this huge and complex, actuator failures are unavoidable, so a model of actuator failure is made and bring it into the controller design to make the planned controller more fault-tolerant, and then a distributed tolerant of faults PID control approach is presented according to the model. The excessive usage of resources for network communication is then further alleviated by developing a stochastic event triggering system (SETS) based on a random sampling period and introducing a dynamic threshold parameter. In addition, H_∞ performance as a criteria for asymptotic stability is created using an optimized Lyapunov function. Finally, a case study of an isolated power system is used to illustrate the advantages of SETS over the periodic event triggering scheme and the effectiveness of the proposed control technique.