研究目的
To enhance the transient stability of integrated systems with photovoltaic and hydropower stations by proposing an emergency control method based on the extended equal area criterion (EEAC) theory.
研究成果
The proposed emergency control method effectively enhances the transient stability of integrated systems with PV and hydropower stations by considering the impact of PV stations on the power angle curve and determining the generator tripping amount based on the EEAC theory. Simulation results validate the method's effectiveness.
研究不足
The study focuses on a specific integrated system with PV and hydropower stations. The impact of PV stations' capacities and integration positions on the power angle curve is considered, but other factors like varying fault types or system configurations are not explored.
1：Experimental Design and Method Selection:
The study employs the EEAC theory to analyze the transient stability of the system, equivalent to a single machine infinite system (SMIB) when disturbed. The least square method is used to fit the equivalent electromagnetic power curve considering the influence of PV stations.
2：Sample Selection and Data Sources:
The study uses a typical integrated system with PV and hydropower stations, including three hydropower stations and three PV stations connected to an infinite bus.
3：List of Experimental Equipment and Materials:
The BPA simulation platform is used for validating the proposed method.
4：Experimental Procedures and Operational Workflow:
A three-phase short circuit fault is simulated between bus 3 and bus 4. The system's response is analyzed, and generator tripping is performed to enhance transient stability.
5：The system's response is analyzed, and generator tripping is performed to enhance transient stability.
Data Analysis Methods:
5. Data Analysis Methods: The acceleration and deceleration areas are calculated based on the equal area criterion to determine the generator tripping amount.
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