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ECE 576 POWER SYSTEM DYNAMICS AND STABILITY

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Presentation on theme: "ECE 576 POWER SYSTEM DYNAMICS AND STABILITY"— Presentation transcript:

1 ECE 576 POWER SYSTEM DYNAMICS AND STABILITY
Lecture 15b Single-Machine Infinite-Bus System Professor Pete Sauer Department of Electrical and Computer Engineering © 2000 University of Illinois Board of Trustees, All Rights Reserved

2 Classical model Or, go back to the two-axis model and assume:

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4 This is a pendulum model
Neglect resistance and assume TCH = ∞ This is a pendulum model

5 This is a pendulum model
Or This is a pendulum model

6 Response with K1=5, K2=10, K3=1.7 (appropriate units)
Euler forward method with time step of sec Initial angle -1 radian Initial speed 7.0 rad/sec

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8 Phase portrait – Omega vs Delta

9 Response with K3=1.3 (appropriate units) – Delta converges to 30 degrees plus 720 degrees

10 Interesting result – increase the time step to be 0
Interesting result – increase the time step to be sec – results in loss of damping!

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