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b) indicate with a cross where the power limit and the MVA limit coincide; then by construction lines or otherwise calculate i) the power factor ii) the load angle iii) the MVAr output c) Where do the maximum heating for the rotor and stator coincide? Determine i) the p.u. excitation ii) the MVA output.

b) indicate with a cross where the power limit and the MVA limit coincide; then by construction lines or otherwise calculate i) the power factor ii) the load angle iii) the MVAr output c) Where do the maximum heating for the rotor and stator coincide? Determine i) the p.u. excitation ii) the MVA output.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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1 This question is about generator capability charts. the operating chart reproduced here from FIGURE 15 The values are in per unit with a 600MVA base. a) , determine the following performance limitations for a generator: i) maximum real power ii) maximum reactive power (a)lagging (b)leading b) indicate with a cross where the power limit and the MVA limit coincide; then by construction lines or otherwise calculate i) the power factor ii) the load angle iii) the MVAR output c) Where do the maximum heating for the rotor and stator coincide? Determine i) the p.u. excitation ii) the MVA output.
Transcribed Image Text:1 This question is about generator capability charts. the operating chart reproduced here from FIGURE 15 The values are in per unit with a 600MVA base. a) , determine the following performance limitations for a generator: i) maximum real power ii) maximum reactive power (a)lagging (b)leading b) indicate with a cross where the power limit and the MVA limit coincide; then by construction lines or otherwise calculate i) the power factor ii) the load angle iii) the MVAR output c) Where do the maximum heating for the rotor and stator coincide? Determine i) the p.u. excitation ii) the MVA output.
Reactive power Q lead p.u. Turbine Limit :0.8 0.6 Theoretical Stability Limit 0.4 Practical Stability Limit 02 :0.83 Real power Pp.u. 0.2 0.4 0.6 0.8 1.0 0.2 04 Excitation Limit 0.6 08 1.0 Stator Heating Limit figure 15 Q lag p.u.
Transcribed Image Text:Reactive power Q lead p.u. Turbine Limit :0.8 0.6 Theoretical Stability Limit 0.4 Practical Stability Limit 02 :0.83 Real power Pp.u. 0.2 0.4 0.6 0.8 1.0 0.2 04 Excitation Limit 0.6 08 1.0 Stator Heating Limit figure 15 Q lag p.u.
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