Wide-Area Damping Cooperative Control Method of Low-Frequency Oscillations of Power Systems with Photovoltaic Stations

doi:10.11930/j.issn.1004-9649.202112114

Abstract

Abstract: The grid integration of largescale new energy increases the risks of weakly damping oscillations. Considering the dynamics of synchronous generators and photovoltaic generations, this paper establishes a detailed small-signal model and analyzes the impact of photovoltaic generations on low-frequency oscillation modes. A wide-area damping control structure of low-frequency oscillations is proposed for power systems containing photovoltaic generations, so that photovoltaic generations and synchronous generators can dampen low-frequency oscillations. Based on the results of eigenvalue analysis, an optimization model of wide-area damping control parameters is proposed further Finally, the electromagnetic transient simulation model of four-generator and two-area system with photovoltaic station is built on the PSCAD/EMTDC platform. The time domain simulation results verify the effectiveness of this wide-area damping control method.

Key words: low-frequency oscillation, wide-area damping control, photovoltaic generation, small-signal modeling, eigenvalue analysis

SHEN Tugang, WU Zhenghua, WANG Sijia, WU Xiangyu. Wide-Area Damping Cooperative Control Method of Low-Frequency Oscillations of Power Systems with Photovoltaic Stations[J]. Electric Power, 2022, 55(12): 69-77.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202112114

https://www.electricpower.com.cn/EN/Y2022/V55/I12/69

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