Security Impact of Energy Storage Frequency Modulation System on Power System and its Control Strategy

Based on the development background and relevant theoretical knowledge of the energy storage frequency modulation (ESFM) system, and in view of the current application status of the ESFM system in China, this paper takes the energy storage auxiliary frequency modulation (FM) project based on a power plant in Guangdong as an example, analyzes the security impact on the high-voltage auxiliary transformer capacity, the primary system short circuit, the primary FM function of the unit and the harmonic and voltage at the access point of the power plant. The security impact of the ESFM system connected to the grid on the power system is evaluated. Finally, the control strategies of the ESFM system are proposed.