Answered: 01. AC system with rated voltage…

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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01. AC system with rated voltage Vs=500kV, to be connected to a 6-pulse rectifier through a transformer with turn ratio r. The DC voltage Vd=250kV, DC current Id=1kA ,the converter equivalent reactance xd=35 ohm, and firing angle is 15⁰, find r=?. If the AC system voltage changes to 525kV or 475kV, what the r1 and r2 will be in order to keep the DC parameters unchanged? 02. The inverter of a 1000MW HVDC project is connected with a 400kV AC system with 120mH equivalent source inductance. Find the SCR. And to describe the strength of the system(strong, medium, weak, very weak?). If the reactive power is compensated by the connection of capacitors with 560MVA, find the ESCR.

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