Budget-Constrained Reinforcement of SCADA for Cascade Mitigation

Vajiheh Farhadi, Sai Gopal Vennelaganti, Ting He, Nilanjan Ray Chaudhuri, Thomas La Porta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We study the impact of coupling between the communication and the power networks as it affects a SCADA-based preventive control system. Today power grids use power lines to carry control information between components in the grid and a control center using power line carrier communication (PLCC). Thus a failure in the power grid will cause a failure in the control network and may reduce the capability of preventive control that in turn increases the risk of cascading failures. We pose the problem of allocating a limited number of non-PLCC communication links (e.g., microwave links) that are immune to failures in the power grid to maximize our controllability over the grid under power system failures, so as to maximize the total demand served at the end of cascade. By formulating the problem as a nonlinear integer programming problem, we establish its hardness and identify a generic heuristic that can find an approximate solution within controllable time. We further develop a domain-specific heuristic that utilizes both graph-theoretic and power system information to achieve similar performance as the generic heuristic at a much lower computational complexity. Our evaluations based on a 2, 383-bus Polish system demonstrate that only a few non-PLCC links, when placed correctly, can substantially improve the robustness of the grid as measured by the total demand served at the end of cascade.

Original languageEnglish (US)
Title of host publication30th International Conference on Computer Communications and Networks, ICCCN 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9780738113302
DOIs
StatePublished - Jul 2021
Event30th International Conference on Computer Communications and Networks, ICCCN 2021 - Virtual, Athens, Greece
Duration: Jul 19 2021Jul 22 2021

Publication series

NameProceedings - International Conference on Computer Communications and Networks, ICCCN
Volume2021-July
ISSN (Print)1095-2055

Conference

Conference30th International Conference on Computer Communications and Networks, ICCCN 2021
Country/TerritoryGreece
CityVirtual, Athens
Period7/19/217/22/21

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

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