With the increasing proportion of installation capacity of new energy, photovoltaic’s participation in grid frequency regulation has become a research hotspot. However, the existing research alaways aims at frequency regulation effect, and directly gives parameters such as the droop coefficient based on experience, it lacks practical reference value for engineering. This paper studies the problem from two dimensions: frequency regulation strategy and techology. Taking two frequency regulation technologies of load shedding operation and additional energy storage as the main line of the text, and two frequency regulation strategies of droop control and virtual inertia control as the research objects, a universal method for designing frequency regulation parameters is proposed based on the power frequency static characteristics and rotor motion characteristics of traditional units, and the essence of the two types of frequency regulation technologies is revealed. Taking the power grid of a new energy-rich area in Guizhou as the example, the regional power grid model is built in the MATLAB/Simulink simulation platform, frequency exceed/not exceed the PV frequency regulation limit as the simulation conditions are designed and compared with previous work. The results verify the accuracy and effectiveness of the proposed parametric design methods. At the same time, comparing the frequency modulation effects of the two types of technologies, it is found that in the same scene, the additional energy storage technology can achieve better frequency modulation effects.