DOI:10.1007/s40565-018-0447-8 |
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Risk-based method to secure power systems against cyber-physical faults with cascading impacts: a system protection scheme application |
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Page view: 0
Net amount: 1210 |
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Author:
Jose Luis CALVO1, Simon H. TINDEMANS2, Goran STRBAC1
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Author Affiliation:
1.Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK;
2.Department of Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands
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Foundation: |
This work was supported by the UK Engineering
and Physical Sciences Research Council (EPSRC) (No. EP/
K036173/1) (ACCEPT). |
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Abstract: |
The utilization levels of the transmission network
can be enhanced by the use of automated protection
schemes that rapidly respond to disturbances. However,
such corrective systems may suffer from malfunctions that
have the potential to exacerbate the impact of the disturbance.
This paper addresses the challenge of jointly optimizing
the dispatch of generators and protection settings in
this context. This requires a holistic assessment of the
cyber (protection logic) and physical (network) systems,
considering the failures in each part and their interplay.
Special protection schemes are used as a prototypical
example of such a system. An iterative optimization
method is proposed that relies on power system response
simulations in order to perform detailed impact assessments
and compare candidate solutions. The candidate
solutions are generated on the basis of a security-constrained
dispatch that also secures the system against a set
of cyber failure modes. A case study is developed for a
generation rejection scheme on the IEEE reliability test
system (RTS): candidate solutions are produced based on a
mixed integer linear programming optimisation model, and
loss-of-load costs are computed using a basic cascading
outage algorithm. It is shown that the partial security
approach is able to identify solutions that provide a good
balance of operational costs and loss-of-load risks, both in
a fixed dispatch and variable dispatch context. |
Keywords: |
Power system operations, Cyber-physical
systems, Reliability, System protection schemes, Riskaware
dispatch |
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Online Time:2018/09/22 |
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