Adaptive Simulation Method of High Voltage Direct Mounted Energy Storage with Wide Short Circuit Ratio

With the continuous increase in renewable energy penetration, high-voltage direct-connection energy storage technology has emerged as a research hotspot due to its distinct advantages in grid-level applications. This paper constructs a real-time simulation model of a 35 kV/100 MW high-voltage direct-connection energy storage system based on a Hardware-in-the-Loop (HIL) platform. The research focuses on theoretical analysis and control strategies for ‌power stabilization control of energy storage converters under wide short-circuit ratio (Wide-SCR) conditions and active voltage/frequency support technology. Through simulating grid-connected operational scenarios of high-voltage direct-connection energy storage systems, comprehensive testing and validation are conducted. The proposed simulation method avoids hardware failure risks, reduces testing costs, and prevents harmonics contamination of grid power quality during experimental procedures.