Impact of bad data injection attacks in the estimation of FACTS controllers parameters

摘要

In the context of power system state estimation, cyber attacks based on false data injections consist of corrupting a defined set of measurements in such a way that the corresponding residual value of each measurement is very small. Hence, these erroneous measurements are undetectable when a bad data analysis is performed, which causes a false state estimation to be considered correct. This paper reports the way in which a cyber attack can be performed to corrupt an available set of measurements associated with the operation of electronic-based controllers, namely the thyristor-controlled series compensator (TCSC) and static VAR compensator with a transformer (SVC-T), which jeopardizes the controller's secure operation if a control action is performed based on this false estimation of the operating state. Study cases are reported to numerically illustrate the consequences for the unobservable attacks.