FGI Mining High-Voltage Cascade Energy Storage Emergency Power Solution
Project Overview
Mine power supply is the lifeline of underground mining safety. An external grid outage stops critical first-level loads like ventilation fans, hoists, and drainage pumps. This easily leads to major safety hazards such as gas accumulation and blocked personnel evacuation. Traditional diesel generator sets start slowly, cost a lot to maintain, and produce heavy pollution. Energy storage emergency power supplies outperform them with ultra-fast switching, dual-use operation, and low environmental impact. These advantages make energy storage systems the new standard for modern green mines. FGI has focused on mining emergency energy storage for years. Our self-developed high-voltage cascade energy storage technology directly solves industry pain points. We continue to build uninterrupted power safety barriers for major mining areas across China.
Dual-Mode Operation – Daily Revenue Plus Emergency Protection
FGI energy storage emergency power systems support two operating modes: normal energy storage and emergency backup. One set of equipment delivers both safety assurance and economic value.
In normal energy storage mode, the incoming switch remains closed. The system uses an intelligent energy management system to participate in grid peak-valley arbitrage. It stores low-cost electricity during off-peak hours and discharges during peak hours. This smooths the mine's power load and significantly reduces electricity expenses. The emergency equipment transforms from a cost-only asset into a revenue-generating energy-saving asset, as shown below.
In normal energy storage mode, the incoming switch stays closed. The energy storage emergency power system uses its intelligent energy management system to engage in grid peak-valley arbitrage. It stores cheap electricity during low-demand periods and releases power during high-demand periods. This balances the mine's electricity load and greatly cuts corporate power costs. The emergency equipment changes from a pure investment item into a profit-generating energy-saving asset, as illustrated below.
The high-voltage cascade energy storage system adapts perfectly to mining applications with high power and heavy impact loads. This system serves as the core carrier of our total solution. It delivers high efficiency, strong safety, large power capacity, and rapid response. These systems have now achieved large-scale deployment in major coal mines nationwide.
Core Technical Advantages – Five Hard-Core Highlights of High-Voltage Cascade Energy Storage
Coal mines face complex operating conditions including high dust levels, high-power loads, frequent energy feedback, and strict emergency power requirements. FGI's self-developed high-voltage cascade energy storage devices offer five irreplaceable advantages:
1. High Reliability – Full Scenario Adaptation
High automation, fast startup, low maintenance costs, and flexible functional configuration. The system perfectly adapts to complex mine environments and maintains stable long-term continuous operation.
2. Heavy-Load Direct-Start Algorithm
The system incorporates current prediction plus variable virtual impedance algorithm. It directly starts large transformers and high-power hoist motors without additional starting equipment. This simplifies the mine's power distribution architecture.
3. Intelligent Energy Feedback Absorption
The system automatically absorbs feedback energy generated during vertical hoist descent. It suppresses grid voltage swells and protects all electrical equipment from surge damage.
4. Ultra-Fast Seamless Switching
Off-grid emergency switching time is ≤1 second. The system completes power supply switching instantly when an external grid outage occurs. This minimizes critical equipment shutdown risks.
5. Dual-Use for Both Emergency and Daily Gains
During non-emergency periods, the system participates in power market peak-valley regulation. It fully utilizes stored capacity to save electricity costs long-term. This maximizes the return on safety investments for mining enterprises.
Application Cases
FGI has delivered standardized emergency power solutions across the full 6kV and 10kV range. We have built industry benchmark projects in multiple regions nationwide. Shandong Province's first cascade emergency energy storage unit passed evaluation by the China Occupational Safety and Health Association. Experts rated the overall technology as internationally leading.
1. 6kV High-Voltage Cascade Energy Storage Emergency Power System
Critical emergency loads: 630kW main ventilation fan, 1250kW mine hoist.
System configuration: Two sets of 6kV 2MW/2.2MWh high-voltage cascade energy storage units with three-phase star topology, totaling 24 battery clusters.
Core value: This early domestic mine high-voltage storage emergency benchmark verified the feasibility of directly driving high-power safety loads. It provides a proven model for mine retrofits across the province.
2. 10kV High-Voltage Cascade Energy Storage Emergency Power System
Critical emergency loads: 220kW drainage pump, 1120kW hoist, 1120kW main ventilation fan.
System configuration: 10kV 4MW/8MWh large-capacity cascade energy storage with three-phase star connection and 48 battery clusters.
Core value: The high storage capacity design fully replaces traditional diesel generator sets. It achieves zero emissions and low noise operation. The system meets green mining standards in northern China.
Coal remains the cornerstone of China's energy security. Safe mining operations and a green, low-carbon transition are core priorities for the energy industry's high-quality development. Reliable power supply directly affects the safety of millions of underground miners. FGI drives innovation in power electronics and energy storage technology. We continuously improve mining energy storage emergency power solutions. We solve common industry challenges including slow traditional emergency equipment response, high pollution, expensive maintenance, and insufficient safety redundancy. We promote standardized and intelligent upgrades for mine emergency power systems. Equipment safety performance stands as our primary R&D principle. With ≤1-second ultra-fast switching and large-capacity sustained power backup, we build a strong power safety defense line for mining areas nationwide and reduce outage risks. Meanwhile, our peak-valley arbitrage and energy recovery technologies help mining operations save energy and reduce carbon emissions. Our zero-emission storage solutions replace highly polluting diesel generator sets and support green mine construction. Going forward, FGI will continue deepening our presence in the industrial and mining energy storage sector. We leverage proprietary core technologies to enhance intrinsic safety improvements in the energy industry. We help the traditional coal sector transition toward safe, efficient, low-carbon, and intelligent operations. We fulfill our industry mission and social responsibility as a new-energy equipment manufacturer.
