Challenge and objective

  • Self-healing is a function whereby Intelligent Electronic Devices (IEDs) can automatically reconfigure the power circuits to isolate faults and restore power to the relevant sections. A self-healing application may be faced by challenges of emerging cyber-physical security threats, affecting the power system reliability. In this work, a novel concept using blockchain as a second-tier security mechanism to support time-critical self-healing operations in smart distribution grids is proposed. 

Work performed

  • Proposed architecture that utilise blockchain as a second-tier security layer to validate the time critical messages in a self-healing application.
  • Simulation study was conducted to illustrate how the proposed method performs.

Significant results

  • The simulation analysis showed that the proposed architecture results in less downtime (no power state) for the DSO considered when compared to a normal self-healing.

Impact for distribution system innovation

  • The proposed architecture can improve the cyber-physical security for real-time self-healing in the distribution systems (by reversing some actions) thereby increasing the grid immunity towards cyber-physical attacks.
  • The proposed blockchain technology can also maintain the bookkeeping which can be used to  learn and analyse the vulnerabilities from successful cyber-attacks and improve the cyber security of the grid in the long term.
Blockchain Support For Time-Critical Self-Healing In Smart Distribution Grids

Oddbjørn Gjerde

WP2 Lead
+47 99 730 027
Oddbjørn Gjerde
WP2 Lead

Reference in CINELDI