Reliable Node-Based Cyber Resilient Distributed Economic Dispatch for Smart Grids

Cybersecurity of distributed economic dispatch (ED) within smart grids iscritical for the system’s efficiency and reliability. Especially stealth attacks,where an agent secretly manipulates its own cost parameters and turns thesystem into a non-optimal state, are known to pose a serious threat because ofdetection difficulty. This study offers a new, architecture-based defensestrategy against the mentioned stealthy cost parameter attacks, which is easierto implement. The proposed method is based on an architecture of wheretrusted nodes are strategically placed in the network and enable normal nodesto proactively filter abnormal data from malicious agents, based on informationreceived from trusted neighbors. The effectiveness of the strategy is testedunder three different scenario simulations in MATLAB. The results show thatthe proposed defense mechanism successfully neutralized the attack, enableshealthy nodes to reach optimal consensus, and prevents the system sufferingeconomic losses.