3._赵家林-基于标准要求的储能系统安全评估方法_21页_2mb

ESS Safety Assessment Approaches Based on Standards Summary

Overview

The content covers the safety assessment of energy storage systems (ESS), defining key concepts, potential hazards, international standards, evaluation methods, and testing procedures. It emphasizes a systematic approach to ensure ESS safety throughout their lifecycle, with a focus on standards-based methods.

Key Definitions and Classifications

• ESS Definition: An ESS is a device that stores energy electrically for later use. Types include mechanical, electrochemical, thermal, electrical, and chemical storage, categorized based on voltage, capacity, site occupancy, and chemistry.
• Applications: Common scenarios include industrial/commercial and residential uses, with examples like battery storage systems in different settings.
• Hazard Identification: Potential risks encompass electrical (shock, arc flash), mechanical, chemical, thermal, and explosion hazards, requiring comprehensive evaluation.

International Standards

Global standards guide ESS safety, divided into categories for system safety (e.g., IEC 62933-5-2, UL9540), installation (e.g., NFPA855), and specific testing (e.g., UL9540A). These cover product requirements, installation practices, and testing to mitigate risks.

Evaluation Methods

Safety is assessed through three phases:

• Structure Design Review: Involves checking component compliance, functionality (e.g., BMS), and electrical/structural safety based on standards like IEC 62933-5-2 and UL9540.
• Analysis and Simulation: Uses calculations for risk assessment, such as BMS functionality evaluation, thermal runaway simulations, and component stress analysis to ensure reliability.
• Testing and Verification: Practical tests include electrical (e.g., short-circuit, insulation), thermal (e.g., temperature rise and heat management), and fire safety (e.g., UL9540A) assessments to validate system performance.

Comparison of Evaluation Approaches

• Design Review: Cost-effective and direct, but limited by systematic assessment and reliance on experience.
• Simulation/Analysis: Offers depth and modeling, but risks model inaccuracies and deviation from real-world conditions.
• Testing: Provides evidence-based validation, yet is resource-intensive and may not cover all scenarios.

Testing Verification Details

• Electrical Testing: Includes insulation, voltage withstanding, and fault detection to ensure safe operation under various conditions.
• Thermal and Fire Safety: Tests like UL9540A examine thermal runaway and fire propagation to inform fire prevention measures.
• Testing Capabilities: Organizations like TÜVSÜD offer comprehensive services from component to system level, using advanced facilities for full-scale simulations.

Overall, ESS safety requires an integrated approach combining standards, design, simulation, and validation tests to address system-specific risks and ensure safe deployment.