Frequency Stability Preventive Control and Optimized Generator Tripping Control Considering LVRT of New Energy

In the power grid with high proportion of new energy, the temporary active power shortage of new energy caused by LVRT may cause large fluctuation of power grid frequency and even disordered actions such as low-frequency load shedding and high-frequency generator tipping. On the basis of studying the external characteristics of active power and congestion energy during the LVRT period of new energy, this paper discusses the impact of the LVRT period of new energy on the frequency stability of the power grid, puts forward a quantitative evaluation method for the acceptance limit of new energy constrained by the frequency stability, An optimized new energy tripping measure based on congestion energy estimation sequencing is proposed, and the effectiveness of the above method is verified by simulation.