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Application of FRP Lightning Rods in BESS-PV Photovoltaic Energy Storage Power Generation Projects
FRP (Fiberglass Reinforced Plastic) lightning rods are the preferred solution for direct lightning strike protection in BESS-PV photovoltaic energy storage projects due to their four core advantages: insulation and explosion-proof, lightweight and high strength, corrosion resistance and long service life, and side flash prevention. They are particularly suitable for harsh environments such as coastal areas, deserts, high humidity, and high salt spray.
1. Core Application Scenarios (Full Coverage for BESS-PV)
1.1 Photovoltaic Array Area (PV)
- Protected objects: Photovoltaic modules, strings, brackets, combiner boxes, inverters, box-type transformers
- Core functions: Intercept direct lightning strikes, protect modules and AC/DC equipment, and avoid lightning breakdown, fire and system shutdown
- Layout requirements: Calculate the spacing according to the rolling sphere method, with the lightning rod height 1.5–3m above the highest point of the modules to form a continuous protection zone
1.2 Energy Storage System Area (BESS)
- Protected objects: Energy storage containers (lithium-ion/flow batteries), PCS converters, Battery Management Systems (BMS), integrated energy storage converter and booster units
- Core functions:
- Explosion-proof safety: High insulation eliminates spark discharge at the tip and reduces the risk of thermal runaway/combustion and explosion of lithium batteries
- Anti-electromagnetic interference: Reduce damage of Lightning Electromagnetic Pulse (LEMP) to precision electronic equipment such as BMS and PCS
- Key requirements: Cooperate with SPD surge protection, equipotential bonding and shielding grounding to form a complete lightning protection system
1.3 Booster Station / Complex Building / Auxiliary Facilities
- Protected objects: Main transformers, switch cabinets, SVG, SVG rooms, monitoring rooms, complex buildings, fire pump rooms
- Core functions: Protect high-voltage equipment and secondary control circuits and prevent total station power failure caused by lightning strikes
2. Core Advantages (Compared with Traditional Metal Lightning Rods)
3. Technical Selection & Design Key Points
3.1 Product Selection (Recommended)
- Air terminal: Stainless steel/titanium alloy tip (curvature radius ≤ 3mm), optional Early Streamer Emission (ESE) type to expand protection range by 20%–30%
- Pole body: Epoxy resin + glass fiber winding molding, built-in multi-strand copper core down conductor (≥70mm²), equipped with segmented grading rings for side flash prevention