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Trust assessment of power system states

Authors
  • Brand, Michael1
  • Babazadeh, Davood1
  • Krüger, Carsten1
  • Siemers, Björn1
  • Lehnhoff, Sebastian1
  • 1 OFFIS – Institute for Information Technology, Escherweg 2, Oldenburg, 26121, Germany , Oldenburg (Germany)
Type
Published Article
Journal
Energy Informatics
Publisher
Springer International Publishing
Publication Date
Oct 28, 2020
Volume
3
Issue
Suppl 1
Identifiers
DOI: 10.1186/s42162-020-00121-9
Source
Springer Nature
Keywords
License
Green

Abstract

Modern power systems are cyber-physical systems with increasing relevance and influence of information and communication technology. This influence comprises all processes, functional, and non-functional aspects like functional correctness, safety, security, and reliability. An example of a process is the data acquisition process. Questions focused in this paper are, first, how one can trust in process data in a data acquisition process of a highly-complex cyber-physical power system. Second, how can the trust in process data be integrated into a state estimation to achieve estimated results in a way that it can reflect trustworthiness of that input?We present the concept of an anomaly-sensitive state estimation that tackles these questions. The concept is based on a multi-faceted trust model for power system network assessment. Furthermore, we provide a proof of concept by enriching measurements in the context of the IEEE 39-bus system with reasonable trust values. The proof of concept shows the benefits but also the limitations of the approach.

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