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The weakest bus in a network is the first point where voltage collapses in a severe contingency. The weakest bus may change with system configurations and operating conditions. This paper proposes a technique to evaluate the weakest bus and system reliability based on system voltage stability under various system contingencies and operation conditions. A power system is divided into safety, margin,...
An assessment approach on power system voltage stability is provided using Back Propagation (BP) Neural Network, which takes the Voltage Collapse Proximity Indicator (VCPI) as assessment index. The key feature of the method is to establish static and dynamic assessment models on voltage stability. The training results of the static models based on load flow calculation can reflect the nonlinear mapping...
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