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Performance of gas turbine-based plants during frequency drops

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2 Author(s)
Kakimoto, Naoto ; Kyoto Univ., Japan ; Baba, K.

A combined cycle power plant, which combines a gas turbine and a steam turbine, can achieve high energy efficiency. Many combined cycle plants have been installed in the world. However, a large-scale blackout occurred in Malaysia in 1996. Combined cycle and gas turbine plants sequentially tripped out. The cause of this chain trip was thought to be a system frequency drop. Considering these backgrounds, it is important to study dynamic behavior of combined cycle plants. Several dynamic models of the combined cycle plant have been proposed. In our analysis, we use some of them and build a model for a single-shaft combined cycle plant. We execute numerical simulations to see how the combined cycle behaves when the system frequency drops.

Published in:

Power Systems, IEEE Transactions on  (Volume:18 ,  Issue: 3 )