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Deep integration of information and communication technology (ICT) brings insecure risk to power system operation. A risk assessment approach of power grid considering the reliability of information system was presented. The influence of information system on the action of protection was analyzed firstly. The reliability model of information system was established. Then the evaluation index, including...
With the deregulation of power market and integration of large-scale intermittent renewable generation, the operation of modern power system is faced with more and more uncertain factors. Traditional deterministic methods are hard to meet the requirements for the analysis and control of power system under uncertainty. Therefore, it's necessary to introduce risk assessment methods into the daily operation...
Traditional risk assessment methods focus on the power network side while ignoring the impacts of the information system. A risk assessment approach for power system based on a comprehensive fault probabilistic model is proposed. The risk factors of the information system are considered in the model. Overload and voltage violation risk indices are adopted. The risk indices thus gained can be used...
This paper presents a new risk assessment method for cascading failure caused by electric cyber-physical system (ECPS). The development of a trustworthy smart grid requires a deeper and more specific analysis of potential impacts resulting from failures of ECPS. A probability model is presented to calculate the reliability of ECPS which controls the security and stability control system. Cascading...
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