Measurement sets in power system state estimator in presence of false data injection attack

False data injection attacks (FDIA) on smart grid is a popular subject of current research. The presence of FDIA and other such attacks in smart grid is partly due to the combination of Information and Communication Technology with Power Systems. The FDIA on linear model of power system has been extensively analyzed in literature. However the non linear system model has not received the same amount of attention. This paper proposes the concept of balanced and unbalanced measurement set for the purpose of corrupting the state variables in linear and non-linear power system state estimators. The effect of balanced and unbalanced measurement sets for targeted constrained and unconstrained attacks are analyzed for linear and non-linear state estimators.