Simultaneous State Estimation and Bad Data Detection on PMU Measurements in Active Distribution Power Networks

Radhoush, Sepideh; Vannoy, Trevor; Whitaker, Bradley M.; Nehrir, Hashem

doi:10.1109/naps56150.2022.10012150

Cited by 3 publications

(1 citation statement)

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“…The method is compared to traditional a proaches that perform BDD and DSSE calculation using two independent DNN mode Traditional approaches use a regression-based DNN to perform DSSE calculation and classification-based DNN to detect FDIAs. A description of regression-based DNNs a classification-based DNNs in the context of DSSE and BDD is provided in [62]. In t paper, we assume the attacker injects false data into the original measurements by direc modifying the measurement vector: 𝑧 → 𝑧 .…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2023

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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.

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Section: Methodsmentioning

confidence: 99%