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Challenging algorithm for optimal reactive power dispatch through classical co-ordination equations

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3 Author(s)
J. Nanda ; Dept. of Electr. Eng., IIT, Delhi, India ; L. Hari ; M. L. Kothari

An attempt is made to develop an algorithm based on classical co-ordination equations for optimal reactive power dispatch as an alternative to existing algorithms for real-time application. A set of new loss formulae for both active and reactive power losses is proposed. An innovative approach considering the concept of fictitious reactive powers is used for modelling on-load tap-changing (OLTC) transformers. An attempt is made to effectively consider constraints on bus voltages by expressing these voltages in terms of reactive power generation through distribution factors, which are developed from already available load flow information using a perturbation technique. The proposed model based on classical co-ordination equations, is tested on IEEE 14 and 30-bus test systems and the results are compared with those obtained by more rigorous methods

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IEE Proceedings C - Generation, Transmission and Distribution  (Volume:139 ,  Issue: 2 )