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It is well known that cascading failure is one of the key factors which lead to blackout events around the world. How to simulate cascading failure reasonably is one of the important issues to be solved by electrical engineers. An ad-hoc cascading failure model based on probabilistic line outage and failure correlation is proposed in this paper. The proposed model involves AC power flow computation...
With the rapid development of power system and the integration of renewable energy sources, the uncertainties of power system become more complex, which introduce a more challenging for the assessment of voltage stability. This paper presents an analytical solution of static voltage stability assessment based on the PQ plane analysis method with elaborately selected voltage stability indices, and...
This paper presents a search strategy to identify the chains of events that may lead to cascading failures in power systems. The genetic algorithm is applied to implement the search strategy in accordance with a proposed combined risk index incorporating severity and probability of contingency information. The system frequency characteristics are taken into account as well during analysis. Finally,...
How to identify the weak buses comprehensively and practically in power system voltage stability analysis is an important issue, and is posing great interests to the power engineers. In this paper, a multi-criteria integrated voltage stability index was proposed for weak buses identification. Firstly, the bus voltage change index and reactive power margins, which were determined by P-V curve and Q-V...
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