Research Publications Authored by SLIIT Staff
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This collection includes all SLIIT staff publications presented at external conferences and published in external journals. The materials are organized by faculty to facilitate easy retrieval.
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Publication Embargo Assessment of System Reliability in Presence of Cyber Attack Risk on PMU Data(IEEE, 2018-12-21) Hettiarachchige-Don, A. C. S; Manoharan, A. K; Pedaprolu, L. G; Pedaprolu, VThis paper provides an assessment of the effect of Synchrophasor Measurement Units in improving power system reliability. First, an overview of cyber threats to PMU networks is given where the possible vulnerabilities of the network to malicious data manipulation are studied. The addition of PMUs to the power system infrastructure would offer greater observability in the system and thus mitigate the risk of transmission line failure due to thermal overloading. However, the addition of PMUs opens the system to cyber threats that might, in fact, lower system reliability. The analysis in this work looks at the effect of these threats on the overall system reliability of a real system layout based on real PMU data obtained from a utility. The benefit to a utility in including PMUs under the varying levels of cyber threat is also studied.Publication Embargo Investment risk concepts and measurement of risk in asset returns(MCB UP Ltd, 1995-01-01) Alles, L. AThe theory of finance is built around return and risk concepts and a basic tenet of finance is that there is a trade off between the risk and returns of assets. As such the measurement of risk goes to the very core and foundation of the theory of finance. Given that the main theories of finance have been maturing over several decades of discussion and debate, one would imagine that a concept as fundamental as the measurement of risk would be a well settled issue by now. On the contrary, the recent finance literature shows ample evidence that risk measurement and risk concepts are drawing continued scrutiny from academic researchers. This is because there are several alternative, and competing ways in which risk can be conceived of and it is not clear which of the alternative concepts is most appropriate. Each concept of risk can be measured or estimated in several ways as well. Estimation methods can be diverse in their precision. Risk measurement can be further complicated by the fact that risk is not a static feature. Risk changes over time. Whether risk changes can be modelled satisfactorily is a major challenge taken up by researchers.