An Integrated Frequency-Voltage Controller for Next-Generation Power Systems

This paper presents an integrated frequency-voltage controller design for next-generation power systems. The approach is built on our previous work, where we designed frequency and voltage controllers for the coordinated control of fast-acting inverter-based resources (IBRs) and other legacy sources of power supply in IBR-dominated grids. Here, we integrate these controllers into a joint frequency-voltage control framework. This integration allows the independently designed frequency and voltage control strategies to both utilize the IBRs simultaneously to provide the requisite control services, while also addressing a myriad of integration issues. The joint action of the frequency and voltage controllers under our proposed integration is illustrated via several case studies.