Learning-Enabled Adaptive Voltage Protection Against Load Alteration Attacks On Smart Grids

• URL: http://arxiv.org/abs/2411.15229v1
• Date: Thu, 21 Nov 2024 13:47:01 GMT
• Title: Learning-Enabled Adaptive Voltage Protection Against Load Alteration Attacks On Smart Grids
• Authors: Anjana B., Suman Maiti, Sunandan Adhikary, Soumyajit Dey, Ashish R. Hota,
• Abstract summary: Cyber-attackers can exploit vulnerabilities in the system that can lead to grid instability and blackouts. Traditional protection strategies, primarily designed to handle transmission line faults are often inadequate against such threats. We propose a Deep Reinforcement Learning-based protection system that learns to differentiate any stealthy load alterations from normal grid operations.
• Score: 4.056490085213944
• License:
• Abstract: Smart grids are designed to efficiently handle variable power demands, especially for large loads, by real-time monitoring, distributed generation and distribution of electricity. However, the grid's distributed nature and the internet connectivity of large loads like Heating Ventilation, and Air Conditioning (HVAC) systems introduce vulnerabilities in the system that cyber-attackers can exploit, potentially leading to grid instability and blackouts. Traditional protection strategies, primarily designed to handle transmission line faults are often inadequate against such threats, emphasising the need for enhanced grid security. In this work, we propose a Deep Reinforcement Learning (DRL)-based protection system that learns to differentiate any stealthy load alterations from normal grid operations and adaptively adjusts activation thresholds of the protection schemes. We train this adaptive protection scheme against an optimal and stealthy load alteration attack model that manipulates the power demands of HVACs at the most unstable grid buses to induce blackouts. We theoretically prove that the adaptive protection system trained in this competitive game setting can effectively mitigate any stealthy load alteration-based attack. To corroborate this, we also demonstrate the method's success in several real-world grid scenarios by implementing it in a hardware-in-loop setup.

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