Distribution System State Estimation and False Data Injection Attack Detection with a Multi-Output Deep Neural Network

Abstract

Distribution system state estimation (DSSE) has been introduced to monitor distribution grids; however, due to the incorporation of distributed generations (DGs), traditional DSSE methods are not able to reveal the operational conditions of active distribution networks (ADNs). DSSE calculation depends heavily on real measurements from measurement devices in distribution networks. However, the accuracy of real measurements and DSSE results can be significantly affected by false data injection attacks (FDIAs). Conventional FDIA detection techniques are often unable to identify FDIAs into measurement data. In this study, a novel deep neural network approach is proposed to simultaneously perform DSSE calculation (i.e., regression) and FDIA detection (i.e., binary classification) using real measurements. In the proposed work, the classification nodes in the DNN allow us to identify which measurements on which phasor measurement unit (PMU), if any, were affected. In the proposed approach, we aim to show that the proposed method can perform DSSE calculation and identify FDIAs from the available measurements simultaneously with high accuracy. We compare our proposed method to the traditional approach of detecting FDIAs and performing SE calculations separately; moreover, DSSE results are compared with the weighted least square (WLS) algorithm, which is a common model-based method. The proposed method achieves better DSSE performance than the WLS method and the separate DSSE/FDIA method in presence of erroneous measurements; our method also executes faster than the other methods. The effectiveness of the proposed method is validated using two FDIA schemes in two case studies: one using a modified IEEE 33-bus distribution system without DGs, and the other using a modified IEEE 69-bus system with DGs. The results illustrated that the accuracy and F1-score of the proposed method are better than when performing binary classification only. The proposed method successfully detected the FDIAs on each PMU measurement. Moreover, the results of DSSE calculation from the proposed method has a better performance compared to the regression-only method, and the WLS methods in the presence of bad data.

Smart Preventive Maintenance of Hybrid Networks and IoT Systems Using Software Sensing and Future State Prediction

“…However, in complex distribution grids, correct operation might be corrupted via false data injection attacks (FDIAs). In [19], a novel deep neural network approach is proposed to perform simultaneously distribution system state estimation calculation (using regression) and FDIA detection.…”

Detecting False Data Injection Attacks in Industrial Internet of Things Using an Optimized Bidirectional Gated Recurrent Unit-Swarm Optimization Algorithm Model

“…In computer simulations, the suggested method effectively identified FDIAs in both small and large systems with reasonable accuracy and detection time when taking into account varying disturbance magnitudes and attack sparsity. In addition to comparing Distribution System State Estimation (DSSE) findings with the Weighted Least Squares (WLS) algorithm, a standard modelbased method, Radhoush et al [19] offered an alternative to the conventional methodology of detecting FDIAs and performing SE calculations independently. In the case of inaccurate measurements, the DSSE performance of the projected technique was superior to that of the WLS method and the independent DSSE/FDIA method, and the suggested method also ran more quickly.…”

Detection of False Data Injection Attacks in a Smart Grid Based on WLS and an Adaptive Interpolation Extended Kalman Filter

“…If there exit bad data in the power system, the largest normalized residual is larger than the threshold (ε). The chi-square test and LNR test are generally effective for detecting natural bad data, which typically induce large measurement residuals [35].…”