What is it about?
This index can identify the most sensitive bus to the voltage collapse. The proposed model combines the cumulants with the maximum entropy technique based on a backward/forward sweep technique.
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Why is it important?
The suggested method evaluates not only the voltage magnitude, but also the voltage stability condition of each node in a probabilistic manner. Furthermore, the uncertainties of distributed generation and load demand are taken into account by this index.
Perspectives
The proposed methodology is applied to IEEE 33-bus and 69-bus distribution test systems, and the results are interpreted. Four scenarios are studied to assess the impacts of substation voltage changes and different probability density functions of load on the distribution functions of voltage and VSI. Moreover, the effects of voltage dependent load model on the probabilistic VSI are studied. The results of different case studies have demonstrated that the proposed approach is fast and accurate
Dr Mehrdad Setayesh Nazar
Shahid Beheshti University
Read the Original
This page is a summary of: Probabilistic voltage stability assessment of distribution networks with wind generation using combined cumulants and maximum entropy method, International Journal of Electrical Power & Energy Systems, February 2018, Elsevier,
DOI: 10.1016/j.ijepes.2017.08.011.
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