Publication: State Estimation Fusion for Linear Microgrids over an Unreliable Network
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2022-03-21
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Abstract
Microgrids should be continuously monitored in order to maintain suitable voltages over time. Microgrids are mainly monitored remotely, and their measurement data transmitted through lossy communication networks are vulnerable to cyberattacks and packet loss. The current study leverages the idea of data fusion to address this problem. Hence, this paper investigates the effects of estimation fusion using various machine-learning (ML) regression methods as data fusion methods by aggregating the distributed Kalman filter (KF)-based state estimates of a linear smart microgrid
in order to achieve more accurate and reliable state estimates. This unreliability in measurements is because they are received through a lossy communication network that incorporates packet loss and cyberattacks. In addition to ML regression methods, multi-layer perceptron (MLP) and dependent ordered weighted averaging (DOWA) operators are also employed for further comparisons. The results of simulation on the IEEE 4-bus model validate the effectiveness of the employed ML regression methods through the RMSE, MAE and R-squared indices under the condition of missing
and manipulated measurements. In general, the results obtained by the Random Forest regression
method were more accurate than those of other methods.
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cyberattack, data fusion, estimation fusion, internet of things, kalman filter, machine, learning, packet loss, smart microgrid, state estimation
Bibliographic citation
Soleymannejad, M.; Sadrian Zadeh, D.; Moshiri, B.; Sadjadi, E.N.; Herrero, J.G.; López, J.M.M. State Estimation Fusion for Linear Microgrids over an Unreliable Network. Energies 2022, 15, 2288. https://doi.org/10.3390/en15062288