Frequency Restoration of Networked Multi Area Power System An Event Triggered Control Approach

Abstract

Frequency stability is an important aspect in power system operation and control. Under newlinenormal operation, the frequency should be stable or fluctuate slightly (in the allowable range) newlinearound the operating value. If there is any mismatch in the generation and the load demand, newlinethere will be deviations in the frequency. Larger drop of frequency from the operating value newlinemay lead to power system instability or failure. The major problem which arises in the newlinefrequency control of a networked power system is the limited communication channel newlinebandwidth. An event triggered control (ETC) is a well-known control strategy that optimally newlineutilizes channel bandwidth and at the same time maintains the stability of the system. Unlike newlinetime triggered control approach, the ETC approach is a need-based control approach. The newlinecontrol input is updated only when a predefined triggering condition is violated. In this newlinedissertation, application of an ETC technique is demonstrated for load frequency problems in newlineinterconnected power systems. newline