研究目的
Investigating the design of a novel Power System Stabilizer (PSS) to mitigate adverse impacts of short-term operation stoppage of large-scale photovoltaic (PV) generators on power system dynamics.
研究成果
The proposed retrofit PSS effectively mitigates the adverse impacts of short-term operation stoppage of PV generators on power system dynamics. The PSS improves the damping performance of the system while being considerably lower-dimensional than the entire power system. This approach is promising for integrating large-scale renewable energy sources into existing power grids.
研究不足
The study focuses on a specific benchmark model and may not account for all variations in real-world power systems. The effectiveness of the proposed PSS is demonstrated through simulations, and practical implementation challenges are not addressed.
1：Experimental Design and Method Selection:
The study involves designing a retrofit PSS based on a discrete-time linearized model of a PV-integrated power system. The methodology includes deriving a state-space model representing the electromechanical dynamics of the system and designing a low-dimensional controller to improve damping performance.
2：Sample Selection and Data Sources:
The IEEJ EAST 30-machine power system model, representing the bulk power system in the eastern half of Japan, is used as a benchmark model. This model includes 30 synchronous generators, 31 loads, and 31 PV power plants.
3：List of Experimental Equipment and Materials:
The study utilizes mathematical models and simulations rather than physical equipment. Key components include synchronous generators, PV power plants, and the proposed PSS.
4：Experimental Procedures and Operational Workflow:
The procedure involves linearizing the power system model, designing a retrofit PSS, and simulating the system's response to short-term operation stoppage of PV generators to evaluate the PSS's effectiveness.
5：Data Analysis Methods:
The effectiveness of the proposed PSS is evaluated through numerical simulations, comparing the damping performance of the system with and without the PSS.
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