IEC 62932-2-1:2020

Overview

IEC 62932-2-1:2020 is an international standard developed by the International Electrotechnical Commission (IEC) specifying general performance requirements and test methods for flow battery systems (FBS) and flow battery energy systems (FBES) used in stationary applications. Flow batteries are increasingly vital for grid-level energy storage, supporting renewable energy integration and stable power delivery. This standard outlines how to verify the performance of such systems, including the procedures for determining energy output, input, efficiency, and maximum power capabilities.

Key Topics

• Scope and Applicability: IEC 62932-2-1:2020 applies to flow battery energy systems designed for stationary use, not portable or mobile systems. It details verification methods for their operational performance.
• Performance Testing: The standard defines robust test procedures for:
  • Measuring energy output at constant power
  • Determining maximum deliverable output power and maximum receivable input power
  • Assessing energy efficiency across various power levels
  • Life-cycle endurance testing (cycle life)
• Test Object and Conditions:
  • Precise requirements for selection of the test unit (FBS, FBES, or representative sub-units)
  • Guidelines for measuring conditions - including ambient temperature, voltage, current, energy, and temperature measurements with specified accuracy
  • Consideration of auxiliary systems like Battery Management System (BMS), Battery Support System (BSS), Power Conversion System (PCS), and their impact on performance data
• Documentation and Reporting:
  • Requirement for clear documentation regarding installation, operation, and maintenance
  • Transparent specification of test boundaries and measurement points
• Exclusions: This standard does not cover electromagnetic compatibility (EMC) testing.

Applications

IEC 62932-2-1:2020 is essential for manufacturers, system integrators, utilities, and testing laboratories working with flow battery technology for stationary energy storage. Its practical value includes:

• Product Validation: Ensures reliable data for evaluating flow battery energy systems, supporting claims about rated capacity, efficiency, and power capability.
• Grid Integration: Facilitates deployment of flow battery systems for stationary storage, aiding in peak shaving, load shifting, frequency regulation, and supporting renewable energy sources.
• Procurement and Specification: Allows project developers and procurement professionals to compare products from different suppliers based on standardized performance metrics.
• Quality Assurance: Enables consistent system performance evaluations during design, commissioning, and operation phases.
• Regulatory and Compliance: Supports compliance with international best practices for energy storage systems.

Related Standards

The standard references and aligns with several key international documents, ensuring consistency and broad applicability:

• IEC 62932-1: Flow battery energy systems for stationary applications - Terminology and general aspects
• IEC 62932-2-2: Flow battery energy systems for stationary applications - Safety requirements
• IEC 61427-2: Secondary cells and batteries for renewable energy storage - General requirements and methods of test (on-grid applications)

Conclusion

IEC 62932-2-1:2020 delivers a robust framework for the standardized performance evaluation of flow battery energy systems in stationary settings. This enhances comparability, reliability, and the safe, effective adoption of flow battery storage technologies across the global energy sector. Users of flow battery systems are encouraged to adopt this standard to ensure accurate, repeatable performance assessments that facilitate market growth and increased trust in energy storage solutions.