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a) Biefly explain the importance of reactive power in the analysis of power system performance.

a) Biefly explain the importance of reactive power in the analysis of power system performance.

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
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Part a
04. Figure Q4.1 shows a three phase power system with one generator, two transformers, a line and a load. ot Z. -2+(1+Y) G) XT -3.7% s00 MVA 132 13.2AV Ven= 132 kV X 6% R 0.02 ) 500 MVA 13:1KV Figure Q4.1: A Three Phase Power System Where Y is the last digit of your student number. For example, if your student number is C2000123, then Z is 2+/(1+3)=D2+14O a) Briefly explain the importance of reactive power in the analysis of power system performance. b) For the power system depicted in Figure Q4.1. () Determine "sensible" values for base apparent power and voltage. Explain your choice. (1) Using your chosen base values of apparent power and voltage, calculate the base impedance and per unit impedances in the generator, Irne and load sections. (1w) Convert the transformer nameplate impedance (given underneath their schematcs symbols in Figure Q4.1 as a percentage) into per- unit values suited to your chosen apparent power and voltage bases. (rv) Calcul the per-unit current (v) Find the actual current in the generator. Iine and load sections (v) Calculate the total real power dissipated, and the reactive power absorbed/generated in the load.
Transcribed Image Text:04. Figure Q4.1 shows a three phase power system with one generator, two transformers, a line and a load. ot Z. -2+(1+Y) G) XT -3.7% s00 MVA 132 13.2AV Ven= 132 kV X 6% R 0.02 ) 500 MVA 13:1KV Figure Q4.1: A Three Phase Power System Where Y is the last digit of your student number. For example, if your student number is C2000123, then Z is 2+/(1+3)=D2+14O a) Briefly explain the importance of reactive power in the analysis of power system performance. b) For the power system depicted in Figure Q4.1. () Determine "sensible" values for base apparent power and voltage. Explain your choice. (1) Using your chosen base values of apparent power and voltage, calculate the base impedance and per unit impedances in the generator, Irne and load sections. (1w) Convert the transformer nameplate impedance (given underneath their schematcs symbols in Figure Q4.1 as a percentage) into per- unit values suited to your chosen apparent power and voltage bases. (rv) Calcul the per-unit current (v) Find the actual current in the generator. Iine and load sections (v) Calculate the total real power dissipated, and the reactive power absorbed/generated in the load.
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