A method for identifying weak nodes in nonconvergent load flows
1989; Institute of Electrical and Electronics Engineers; Volume: 4; Issue: 2 Linguagem: Inglês
10.1109/59.193854
ISSN1558-0679
Autores Tópico(s)Smart Grid Energy Management
ResumoThough the Newton-Raphson method usually converges to a solution of the simultaneous nonlinear load flow equations, it can occasionally be nonconvergent. A method for identifying weak areas of systems which prevent convergence of the Newton-Raphson method is presented. This information aids load-flow-program users in the modification or correction of system data to obtain convergence. The method is tested on a 28-node test power system and on an 84-node case from a utility company. The method consistently identified the weak node in systems in which a preset weak node had intentionally been placed for testing. The method also identified the same weak area in an industrial case as had engineers familiar with the system. >
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