Power Frequency Coordination Control Method for High Penetration Renewable Energy Resources

摘要

The disturbance of integrated power will increase while the rotational inertia that can restrain the change of system frequency will decrease when large-scale renewable energy is integrated to the power grid. This produces new problems and challenges for AGC Control. Based on the model of sub operating area, this paper proposed the fundamental principle of AGC control when large-scale renewable energy, thermal and hydro units are participating in the process of frequency regulation. These three types of resources can undertake the total ARR (Area Regulation Requirement) of the whole operating area by equal proportional regulation capacity ratio strategy or priority coordinated control strategy. Besides, this paper also described how to track inner stable tie-lines and how to coordinate with upper level load dispatch center to jointly regulate system frequency. These research results are helpful for practical applications of AGC regulation.