Methodology for Reliability Analysis of Cyber–Physical MTdc Grids

IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, pp. 5228–5238

Abstract

The MTdc grid can be considered as a cyber–physical system as they are dependent on the cyber infrastructure for optimal coordination of its resources irrespective of the adopted control strategy (master–slave, voltage margin, or droop). Hence, the reliability of the MTdc grids depends not only on the reliability of the power electronic components of the converter but also on the cyber infrastructure. This article proposes a reliability evaluation method based on a continuous-time Markov chain (CTMC) for cyber–physical MTdc grids. The detailed failure models of the cyber–physical components of the MTdc grids are presented. A method is proposed to derive the multidomain reliability of the MTdc grid. Finally, the proposed method is applied for the reliability analysis of a three-terminal dc grid. The impact of specific redundancy measures of the cyber components on the reliability of the MTdc grid control is presented.

Authors 4

1. Abhinav Sadu Aachen E.ON Energy Research Center Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   E.ON Energy Research Center, Institute for Automation of Complex Power Systems, RWTH Aachen University, Aachen, Germany

2. Gaurav Kumar Roy Aachen E.ON Energy Research Center Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   E.ON Energy Research Center, Institute for Automation of Complex Power Systems, RWTH Aachen University, Aachen, Germany

3. Ferdinanda Ponci Aachen E.ON Energy Research Center Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   E.ON Energy Research Center, Institute for Automation of Complex Power Systems, RWTH Aachen University, Aachen, Germany

4. Antonello Monti Aachen E.ON Energy Research Center Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   E.ON Energy Research Center, Institute for Automation of Complex Power Systems, RWTH Aachen University, Aachen, Germany