Power system state estimation by linear programming under false data injection attack and contingency

Security of Smart Grid is the main issue in power sector. The power sector is highly vulnerable to cyber physical attack as it uses modern infrastructure and communication devices. The Security of power system demands that the real time operation of power system should not be affected under occurrence of events. Contingency or outage of transmission line is one of the major events occurring in the power system. This paper presents that, on the basis of residue we can distinguished between False Data Injection Attack (FDIA) and Contingency. Linear programming method of state estimation is being used to find best estimates. Residues calculated under Contingency and attack are calculated and compared.