Journal of
Electrical and Electronics Engineering Research

  • Abbreviation: J. Electrical Electron. Eng. Res.
  • Language: English
  • ISSN: 2141-2367
  • DOI: 10.5897/JEEER
  • Start Year: 2009
  • Published Articles: 59

Full Length Research Paper

A neuro fuzzy model of an induction motor for voltage stability analysis using continuation load flow

Ngoo L. M.*, Muriithi C. M.,  Nyakoe G. N. and Njoroge S. N.
School of Electrical Electronic and Information Engineering, Department of Electrical and Electronics Engineering, Jomo Kenyatta University of Agriculture and Technology, P. O. Box 62000-00200, Nairobi, Kenya
Email: [email protected]

  •  Accepted: 18 March 2011
  •  Published: 30 June 2011



This paper uses the concept of the continuation power flow analysis used in voltage stability analysis. It uses the continuation load flow to plot the PV (pressure-volume)curves of an induction motor load. A neuro-fuzzy model of an induction motor load is used to represent an industrial load. In the subsequent predictor-corrector stages, the induction motors are increased to depict increment in loading. Different motor ratings are used in the investigation. The process starts at some base values of the system and lead to the critical point. Further, the reduced Jacobian is used to strategically locate the capacitor banks in the power system so as to effect maximum voltage improvement. In the case study, illustrative examples with the IEEE 30 bus system are shown.   


Key words: Continuation load flow, induction motors, voltage stability, neuro-fuzzy