Empirical Development of a Trusted Sensing Base for Power System Infrastructures

Abstract

The transition from traditional power systems into smart grid infrastructures constitutes secure data acquisition to prevent widely explored false data injection attacks. In this paper, we design, implement, and deploy a trusted sensing base (TSB) that enhances the security capabilities of traditional commodity power system sensors via enabling them to encrypt analog ac signals at data acquisition points. Nowadays, data encryption occurs at phasor measurement units (PMUs) after the measurements are sampled and digitalized at the analog-to-digital devices. Through pushing the encryption to within the sensors, TSB reduces the size of trusted computing base for the whole smart grid infrastructure and hence increases its trustworthiness. We have developed a hardware working prototype of TSB in a real-world power system test-bed, including PMUs and energy management systems. Results are very promising for practical real-world deployments. TSB encrypts analog signals on the sensor side and retrieves a very accurate estimate of them on the global positioning system-synchronized control center side with minimal latency.

Securing Smart Grids Through an Incentive Mechanism for Blockchain-Based Data Sharing

“…In an FDI attack, the measurements collected by the meter during normal operation are replaced by arbitrary measurements, which violates data integrity. Existing approaches against FDI include redundancy through the strategic placement of additional meters [10,12,35,44], improving the security of the existing meters [20,30], and robust detection algorithms [40]. However, these works consider a simple threat model in which there is a single operator who has access to all the measurement data.…”

Efficient design and hardware implementation of a secure communication scheme for smart grid

“…The security must be fully considered from the commencement of data collection up to their reception at the control and management center. Intensive review of the previous works shows that the security of SG is a very interesting topic and so many papers have discussed this challenging requirement. To have a taxonomy of these works, we can mention the works that have considered the key management in SG, the many works that have paid attention to false data injection attack, the miscellaneous works that have proposed privacy‐preserving schemes, and the few works that have taken the advantage of lattice‐based cryptosystem into account …”