Homework 4

Homework 4 - 12 max ? B. Instead of series compensation add...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 529 Utility Applications of Power Electronics Session 37, Page 1/2 Spring 2009 ECE529 Homework #4 (Updated) Due Session 40 (April 29 on campus, May 13 for Engineering Outreach) Problem 1 : For the system below we want to increase the power transfer from Bus 1 to Bus 2 to 650 MW by adding a STATCOM at the midpoint. The STATCOM is connected through a 18:1 transformer with a leakage reactance of .02 on low voltage side, determine the MVA, voltage, and current supplied by the STATCOM. BUS 1 |V 1 |= 345kV LL at 0 o BUS 2 BUS M j30 ohm j30 ohm |V 2 |= 345kV LL at -17.605 o |V m |= ?? at ( θ 1 - θ 2)/2 STATCOM Problem 2: For the system below we want to increase the power transfer from Bus 1 to Bus 2 through series compenstion or by adding a phase shifting transformer. From homework 2 we saw that the power transfer is 600MW with no compensation. A. Add series capacitance to increase P12 to 800MW . What size capacitor is needed? What is the percent compensation? If the max compensation is 60%, what is the new P
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 12 max ? B. Instead of series compensation add phase angle control, again to increase P12 to 800MW. What phase, does the compensator need to produce (assuming we can create such a precise angle? Lets say that max =30 o , what is P 12max ? BUS 1 |V 1 |= 345kV LL at 0 o BUS 2 j60 ohm |V 2 |= 345kV LL at -17.605 o Compensator ECE 529 Utility Applications of Power Electronics Session 37, Page 2/2 Spring 2009 Problem 3: Given a Delta connected load on a 69kV system with the unbalanced impedances given below. Find currents a STATCOM must provide to make the loads unity power factor (assume balanced voltage) using the instantaneous reactive power method to calculate them. Extra credit: Simulate the compensator using ATPDraw. Zab 5 ohm e j 30 deg := Zbc 10 ohm e j 0 deg := Zca 5.77 ohm e j 30 deg :=...
View Full Document

This note was uploaded on 03/19/2010 for the course ECE 529 taught by Professor Johnson,b during the Spring '08 term at Idaho.

Page1 / 2

Homework 4 - 12 max ? B. Instead of series compensation add...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online