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This paper presents a preventive control method lowering cascading outage risk in large-scale AC-DC interconnected power grids. The method consists of two steps. Firstly the possible cascading outages are simulated using fast dynamics of OPA model. Then, a cascading outage risk based security OPF (COR-SOPF) is proposed, which minimizes overall load power outage risk of cascading outages. In COR-SOPF...
Based on the self‐organized criticality (SOC) theory and OTS (OPF with transient stability constraints), this paper proposes a new blackout model which contains three different time scale dynamics, that is, transient dynamics, power flow dynamics, and power system planning dynamics. Not only the cascading failure process but also the characteristics of SOC in power system evolution are investigated...
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