Battery energy storage systems require a panel comprising various safety and control components, including:

1. Battery Management System (BMS)

  • DC Isolation Switch: For isolating the battery bank.
  • DC Circuit Breaker: Helps prevent overcurrent or short circuits.
  • DC Contactor: Remote opening and closing of the battery bank, including isolation.
  • DC Surge Protection Device: Assists in protecting against voltage spikes and lightning strikes.
  • DC Insulation Monitor: Identifies leak currents.
  • Current Monitoring System: Monitors the condition of the battery (including current and voltage levels) and power quality.

2. Power Regulation System or Inverter/Converter

3. Energy Management System

  • Ground Fault Protection Device: Helps protect against ground faults.
  • Miniature Circuit Breaker: Assists in safeguarding auxiliary components.
  • Isolation Switch: Isolates the system from other components.

4. Storage Modules

  • Ground Fault Protection Device: Helps protect against ground faults.
  • DC Isolation Switch: For system isolation.
  • Miniature Circuit Breaker: Helps protect auxiliary components.

DC Miniature circuit breakers Manufacturer

 

When selecting equipment for various systems, the following selection parameters must be considered:

Battery Side (DC)

  • Voltage System: Up to 1500 VDC
  • Protection Devices: Semiconductor fuses or miniature circuit breaker/molded case circuit breaker.
  • Short Circuit: Fault level or withstand ratings.
  • CMS: Insulation monitoring, voltage, and current.

Battery State Monitoring and DC Isolation

  • Voltage: Up to 1500 VDC
  • Isolation: Isolation switch or isolation circuit breaker.
  • Short Circuit: Fault level or withstand ratings.

AC Side

  • Voltage: Up to 800 VAC
  • Protection Devices: Molded case circuit breaker/air circuit breaker.
  • Short Circuit: Fault level or withstand ratings.
  • Residual Current Device.

Building Smarter Systems

When designing panels and choosing components to serve the renewable energy storage market, one should specifically consider the smarter components available today. Built-in intelligence facilitates a higher level of automation, which aids in reducing operational costs and boosting system efficiency. Available communication features facilitate connections through dedicated networks or cloud-based monitoring and control systems, thus enhancing system control.