Core Viewpoint - The successful integration of a high-voltage direct-connected energy storage system in a coal mine marks a significant advancement in emergency power solutions for the mining industry, enhancing safety and operational reliability [2][4]. Group 1: System Features - The high-voltage direct-connected energy storage system has an energy efficiency of ≥90%, eliminating the need for a step-up transformer [6]. - The system is designed with dual redundancy in both the control protection system and PCS modules, ensuring high reliability with a redundancy rate of ≥10% [7]. - It features an integrated design that significantly reduces on-site construction and debugging time [8]. - The system maintains a state of charge (SOC) balance with a maximum inter-cluster SOC imbalance of ≤3% [9]. - It demonstrates high stability during off-grid operation, crucial for emergency scenarios [10]. Group 2: Performance Testing - The system successfully lifted a 14-ton weight and 40 personnel at a speed of 8 m/s during testing [11]. - It met the requirements for simultaneous full-load operation of the auxiliary hoist and ventilation fans, addressing challenges related to off-grid high-power fan startup and long-distance power supply [12].
突破!许继电气大功率高压直挂储能技术实现煤矿应急电源领域首次应用