A fast method for detecting limit-induced bifurcation in electric power systems

Author(s)

Neves, Lucas Sales ^[1] ; Costa Alberto, Luis Fernando ^[1] ; Chiang, Hsiao-Dong ^[2]

Affiliation

^[1] Univ Sao Paulo, Sao Carlos Sch Engn, BR-13566590 Sao Carlos, SP - Brazil

^[2] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 - USA

• Document type: Journal article
• Source: Electric Power Systems Research; v. 180, MAR 2020.
• Web of Science Citations: 0

Abstract

In this paper, the foundations of limit-induced bifurcations (LIB), which usually occur with the violation of limits of reactive power generation, are revisited and further developed to derive a fast method for detecting their occurrence. A numerical scheme, which only requires simple algebraic manipulation and the computational cost of solving a linear system of equations, is proposed for fast computation of LIB. This scheme is combined with the look-ahead prediction method to provide a high quality approximation of load margin and fast assessment of voltage stability taking into consideration the possibility of occurrence of not only saddle-node bifurcations but also LIB. The proposed voltage stability assessment tool is evaluated on the IEEE 118-bus system with successful results. (AU)

• 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: 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: 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)