Loop-analysis-based continuation power flow algorithm for distribution networks

• Published in: IET generation, transmission & distribution Vol. 8; no. 7; pp. 1284 - 1292
• Main Authors: Ju, Yuntao, Wu, Wenchuan, Zhang, Boming, Sun, Hongbin
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.07.2014; Institution of Engineering and Technology; The Institution of Engineering & Technology
• Subjects: Algorithms; Applied sciences; backward‐forward sweep power flow; Convergence; distribution networks; Disturbances. Regulation. Protection; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; fixed‐point iteration algorithm; Iterative methods; LBPF; load flow; loop‐analysis‐based continuation power flow algorithm; Mathematical models; meshed distribution networks; Miscellaneous; Networks; Newton algorithm divergence; Newton method; Operation. Load control. Reliability; Power flow; Power networks and lines; radial distribution networks; saddle node bifurcation point; Saddles; Voltage stability; voltage stability analysis; iterative methods; backward-forward sweep power flow; fixed-point iteration algorithm; radial distribution networks; distribution networks; voltage stability analysis; LBPF; loop-analysis-based continuation power flow algorithm; meshed distribution networks; Newton algorithm divergence; load flow; Newton method; saddle node bifurcation point; Radial distribution; Meshed network; Power system stability; Bifurcation; Iterative method; Stability criterion; Continuation method; Algorithm; Saddle point; Load flow; Predictor corrector method; Algorithm performance; Electrical network; Power flow; Voltage stability; Convergence rate; Numerical simulation; Distribution network; Fixed point
• ISSN: 1751-8687; 1751-8695; 1751-8695
• DOI: 10.1049/iet-gtd.2013.0529

A new continuation power flow method is proposed, which is an extension of the popular backward/forward sweep power flow (BFS) for distribution network. The different reasons for the divergence of Newton's algorithm and fixed-point iteration algorithm near the saddle node bifurcation point have been investigated extensively. Loop-analysis-based power flow (LBPF) is a revised version of BFS, which belong to fixed-point iteration algorithm and its convergence remains satisfactory in a meshed network. Based on LBPF, a tailored continuous power flow method is developed, which can be used as a voltage stability analysis tool for both radial and meshed distribution networks. Numerical test results are presented to validate the proposed procedure.