An application of robust power system security to power system operation for high-penetration of PV

This paper proposes a method of analyzing the N-1 security under the circumstances of PV penetration. The concept of Robust Power System Security (RS) proposed by the authors is used to evaluate the N-1 security quantitatively. It is shown that (1) the relationship between PV penetration and the N-1 security results in a clear trade-off, (2) installation of storage batteries is effective to enhance the N-1 security and (3) power system operators will be able to monitor the N-1 security condition directly by visualizing the security regions gained from the concept of RS. The effectiveness of the proposed method is demonstrated through simulations using a three machine system.

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