Damping performance improvement for PV-integrated power grids via retrofit control. (March 2019)

• Record Type: Journal Article
• Authors: Sasahara, Hampei; Ishizaki, Takayuki; Sadamoto, Tomonori; Masuta, Taisuke; Ueda, Yuzuru; Sugihara, Hideharu; Yamaguchi, Nobuyuki; Imura, Jun-ichi
• Is Part Of: Control engineering practice. Volume 84(2019)
• Page Start: 92
• Page End: 101
• Publication Date: 2019-03
• Subjects: Distributed design -- Large-scale systems -- Power systems -- Retrofit control -- Smart grid; Automatic control -- Periodicals; 629.89
• DOI: 10.1016/j.conengprac.2018.11.004
• Languages: English
• ISSNs: 0967-0661

Abstract

Abstract: In this paper, we develop a distributed design method for power system stabilizers (PSSs) that improve damping performance for deflections caused by contingencies in a power grid in which large-scale PV penetration is introduced. We suppose that there are multiple independent system operators in a grid and each system operator designs a PSS based on the corresponding subsystem model information alone. The controller design method for PSSs under the restriction on available model information is called distributed design. Although practical distributed design methods are typically based on single-machine infinite-bus system, the problem here is that the designed controller possibly destabilizes the grid. In this paper, we propose a novel distributed design method for power grids based on retrofit control theory. The designed PSS can theoretically guarantee the stability of power grids and also improves damping performance. Through a numerical example for the IEEJ EAST 30-machine power system, the effectiveness of our proposed method is verified compared with the conventional method.