Review of Frequency Response Analysis and Evaluation Methods for New Power System

With the development of renewable energy and UHVDC, the power electronic device, grid structure and load characteristics of the power system are changing. The problem of frequency stability of the power grid becomes increasingly prominent. Therefore, it is necessary to carry out research on the frequency of power system. In this paper, several stages of frequency response to disturbance events are analyzed. The influence between power and frequency on the source side and load side is discussed. The frequency security indexes are summarized and several existing frequency prediction/evaluation methods are discussed. The prediction of frequency in advance is of great significance, which can provide help for frequency security and risk pre-control.