Typhoon-resilient coordinated dispatch of wind farm cluster and hydrogen energy storage plant driven by extreme scenarios

With the increasing frequency of typhoon events and the continuous development of wind power generation, the safe and stable operation of the system has garnered extensive attention. Security risks are predominantly associated with abrupt fluctuations in wind power output, line outages, and compounded uncertainties. To address the operational risk of the power system with large-scale wind energy caused by typhoons, a typhoon-resilient coordinated dispatch of wind farm cluster (WFC) and hydrogen energy storage plant (HESP) driven by extreme scenarios (ESs) is developed. Firstly, the aggregated output of offshore wind power (OWP) is numerically simulated according to typhoon characteristic parameters, including meteorological and geographical parameters. In parallel, extreme N-1 line-outage scenarios are rigorously extracted through risk-informed contingency screening. Subsequently, a two-stage DRO dispatch strategy for N-1 line faults is proposed, which considers the supporting role of HESPs in emergency power supply. Specifically, systematic uncertainty error arising from wind power simulation and HESP forecasting is absorbed by flexible thermal units concurrently. Furthermore, Taguchi's orthogonal array testing (TOAT) method and Gumbel distribution are used to transform the worst expectation problem in DRO into an extreme-scenario-driven DRO model. Finally, the advantages of the proposed method are validated through experimental results in the improved IEEE-RTX-96 test system. The simulation results demonstrate that the HESP is superior in restoring power supply during extreme typhoon weather: when the key transmission line suffers N-1 faults under typhoon disturbances, the proposed coordinated dispatch method reduces the system load shedding by 88.44% compared with the traditional dispatch strategy.