Application of Blockchain for Secure Data Transmission in Distributed State Estimation

The application of renewable energy sources in the power grid increases the necessity of tracking the system state, especially in smart grids, where there is a bidirectional transfer of data and power. The complexity of coupling between communication and the electrical infrastructure in a smart grid increases the risk of security breaches. Increasing the state estimation accuracy helps the smart grid operator efficiently manage the system. This article proposes an integration of distributed state estimation with a blockchain-designed communication platform. Additionally, the asynchronous data transmission, which is more likely to happen in the real world, is considered as the second task of this research. Finally, a detailed analysis of the blockchain-based application in distributed state estimation is provided. The numerical analysis shows that the proposed method meets real-world performance requirements and brings high security and reliability to the distributed state estimation process.