Quantitative comparison of power system operation using angle-based control versus frequency-based Control

Abstract:
With the strong expansion of renewable energy sources to achieve carbon neutral energy system, conventional power plants are gradually being replaced by wind and PV systems. These renewable systems are connected to the power grid via converters. The converters do not have physical inertia compared to synchronous generators. In order to guarantee the safe operation of the power system, an adjustment in the operation of the power system is required. A perspective method for the power system operation can be based on the voltage angle control. This paper presents a quantitative comparison of primary control, contrasting the operation with load frequency control using synchronous generators with angle-based control using grid-forming converters. The RMS simulation is carried out for 440 load increase cases. The results of the simulations are analyzed using dynamic security indexes including frequency, voltage, and angle indexes.