Surge Protector Selection In Photovoltaic Energy Storage Systems - Choose The Solution That Fits You

With the rapid development of the renewable energy industry, photovoltaic energy storage systems have become a key source of energy supply. However, these systems are often affected by external factors such as lightning strikes, voltage fluctuations, and electromagnetic interference during operation, which may lead to serious equipment failures and safety risks. The following are the main factors that hinder the selection and normal operation of surge protectors in photovoltaic energy storage systems:

1. Risk of lightning surge

Lightning strikes the photovoltaic array and lightning arrester, and the lightning current invades the DC side of the inverter

Lightning strikes the battery container and line, and the lightning current invades the PCS (energy storage inverter) and BMS (battery management system)

LEMP (lightning electromagnetic pulse) is induced near the photovoltaic array and the AC grid, invading the DC side of the inverter and the AC side of the PCS

2. System failure caused by surge

Causes interruption of system service or component breakdown in the PCS of the energy storage inverter, and the protection device refuses to operate.

Causes failure of communication components of the battery cluster and the battery management system BMS, resulting in false alarms of abnormal monitoring status of the BMS.

Causes insulation breakdown electrical failure, resulting in protection device refusal to operate, short-circuit arcing and fire.