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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On The Computation of The Locally Closest Bifurcation Point Considering Loading Uncertainties and Reactive Power Limits

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Neves, Lucas Sales [1] ; Costa Alberto, Luis Fernando [1]
Total Authors: 2
[1] Univ Sao Paulo, Sao Carlos Sch Engn, BR-13566590 Sao Carlos - Brazil
Total Affiliations: 1
Document type: Journal article
Source: IEEE Transactions on Power Systems; v. 35, n. 5, p. 3885-3894, SEPT 2020.
Web of Science Citations: 0

Voltage stability assessment on a deterministic direction of loading variation may provide misleadingly high values of voltage stability margin due to uncertainties in load forecast. On the other hand, by disregarding loading forecast information and computing the worst case scenario, we may obtain unrealistic and very conservative margin values. This paper proposes a new voltage stability index that takes place between these two approaches. In this proposal, a set of credible loading variation directions is considered and the closest bifurcation point is determined within this set. A fast method for computation of this index is also proposed. The method is able to detect both saddle-node and limit-induced bifurcations. The efficiency of the proposed method is confirmed by means of numerical simulation on different power systems. (AU)

FAPESP's process: 18/24815-7 - Fast methods for selection of preventive and corrective controls in electric power systems considering load uncertainties
Grantee:Lucas Sales Neves
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/22397-0 - Analysis of limit induced bifurcations and parameter uncertainties in the context of voltage stability
Grantee:Lucas Sales Neves
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 14/50851-0 - INCT 2014: National Institute of Science and Technology for Cooperative Autonomous Systems Applied in Security and Environment
Grantee:Marco Henrique Terra
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/20104-9 - Wide-area monitoring, dynamic security analysis and control of modern power system networks
Grantee:Luís Fernando Costa Alberto
Support type: Research Projects - Thematic Grants