Fast Frequency Response Analysis and Efficient Test Device Design of New Energy Station

With the large-scale access of new energy to the power grid, the frequency response performance of the power station is becoming increasingly critical, and its rapid response capability has become an important support for ensuring the stability of the power grid. In view of this challenge, an efficient test design scheme for the rapid frequency response technology of new power stations is proposed. Firstly, the inherent defects of the phase locked loop (PLL) and the characteristics of the frequency response index under the condition of grid connection are analyzed., a fixed trajectory control strategy is proposed to suppress the power fluctuation under the frequency disturbance condition. Then, the rapid frequency response test system architecture is constructed, which supports voltage feed and generation control (AGC) command feedback to realize dynamic response test. Finally, the developed engineering application system can adapt to a variety of test environments, and the verification scheme not only the requirements of relevant standards, but also improves accuracy and efficiency.