Andiç, CenkÖztürk, AliTürkay, Belgin2023-07-262023-07-2620229.78167E+12https://doi.org/10.1109/GEC55014.2022.9986658https://hdl.handle.net/20.500.12684/13237Batman University and Batman Energy Coordination Center (EKOM)2022 IEEE Global Energy Conference, GEC 2022 -- 26 October 2022 through 29 October 2022 -- 185674Measurement devices are placed on the network in order to monitor and operate smart grids. The state of the system is estimated using the network model of the system and the measurement data set obtained from the measuring devices. However, with a cyber-attack, attackers False Data Injection (FDI) attack into the measurement data set. Therefore, the state estimation results of the system are not reliable. In this study, the state of the system is estimated by using the Crow Search Algorithm (CSA), which is one of the heuristic methods. And this study presents the effect of the FDI attack on the CSA-based state estimator to determine the optimal estimate for the system state. The attacker's FDI attack is tested as two different scenarios on the IEEE-9 bus test system. Firstly, it is assumed that the attacker performed an unstructured FDI attack, which has a simple structure. Secondly, it is assumed that the attacker performed a well-structured FDI attack. The Chi-square test method is used to determine whether false data is injected into the measurement data set. The results obtained by CSA-based state estimator show that an unstructured FDI attack can be detected as bad data, while a well-structured FDI attack cannot be detected. However, in both cases, the accuracy of the state estimation results decreases and it affects the analysis, operation and planning of the system. © 2022 IEEE.en10.1109/GEC55014.2022.9986658info:eu-repo/semantics/closedAccesscrow search algorithmcyber-attackfalse data injectionstate estimationComputer crimeCrimeCyber attacksLearning algorithmsNetwork securitySmart power gridsState estimationStatistical testsCrow search algorithmCyber-attacksEstimation resultsFalse data injectionFalse data injection attacksMeasurement data setsMeasurement deviceSearch AlgorithmsSmart gridState EstimatorsHeuristic methodsConference Object2532572-s2.0-85146490251