Concentrated solar power (CSP) generation exhibits a dual functionality of peak load regulation and energy storage

offering rotational inertia and damping support to the renewable energy power system. However

its influence on the stability of power system remains unclear. As for the influence and its mechanism of integration of CSP into power system on the transient stability of system

an equivalent model of CSP plants based on the capacity-weighting method is set up firstly. Then

considering the low inertia characteristics of CSP plants

the extended equal-area criterion (EEAC) is used to analyze the influence of inertia reduction on the transient power angle stability of the system. The research results show that in a single-machine infinite bus system

the substitution of thermal power units with CSP plants at equivalent capacity results in a reduction of system inertia and a weakening of transient power angle stability. Finally

the influence of large-scale integration of CSP on transient stability of power system is simulated and analyzed on the basis of a regional power grid.