IEEE Power & Energy Magazine - November/December 2020 - 89

Association (NFPA) 855 (Standard for the Installation of Stationary Energy Storage Systems).
UL 9540 (first edition published with the American National
Standards Institute in 2015) covers the safety of electrochemical, chemical, mechanical, and thermal ESSs. The document
also incorporates ESS equipment for control, protection, power
conversion, communication, and fire detection and suppression. UL 9540A (first edition in 2017) created a test method for
evaluating thermal runaway fire propagation in BESSs.
The effort to develop NFPA 855 began in 2016 as ESS
technology usage began to increase due to consumer, business,
and government interest. The National Fire Protection Association received more than 600 public inputs and 800 public
comments during the development process for the document,

and the first edition was published in 2019. NFPA 855 focuses
on mitigating risk by examining where ESSs are located, how
installations are separated, and the suppression systems in
place. The document considers ventilation, detection, signage,
listings, and the emergency operations associated with ESSs
and provides extensive requirements for ESS fire safety.
A working group of the International Electrotechnical Commission, Technical Committee 120/Working Group 5 Electrical
Energy Storage Systems/Safety Considerations, has also developed two standards for integrated systems. IEC TS 62393-51:2017 specifies the safety considerations (e.g., hazards identification and risk assessment and mitigation) applicable to any
grid-integrated ESS. The recently published IEC 62933-5-2:2020
focuses specifically on electrochemical ESSs-especially safety

table 1. Preinstallation codes and standards.
Components
Secondary Cells and Batteries Containing Alkaline or Other Non-Acid Electrolytes-
Safety Requirements for Secondary Lithium Cells and Batteries for Use in Electrical
Energy Storage Systems

IEC 63056:2020

High-Temperature Secondary Batteries-Part 2: Safety Requirements and Tests

IEC 62984-2:2020

*Recommended Practice for Battery Management Systems in Energy Storage Applications

IEEE P2686 and CSA C22.2 No. 340

*Standard Communication Between Energy Storage System Components

MESA-Device Specifications/
SunSpec Energy Storage Model

Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 489

Standard for Electrochemical Capacitors

UL 810A

Standard for Lithium Batteries

UL 1642

Inverters, Converters, Controllers, and Interconnection System Equipment for Use With
Distributed Energy Resources

UL 1741

ANSI/CAN/UL Standard for Batteries for Use in Stationary, Vehicle Auxiliary Power, and
Light Electric Rail (LER) Applications

UL 1973

Integrated Systems
Electrical Energy Storage (EES) Systems-Part 5-1: Safety Considerations For GridIntegrated EES Systems-General Specification

IEC TS 62933-5-1:2017

Electrical Energy Storage (EES) Systems-Part 5-2: Safety Requirements For GridIntegrated EES Systems- Electrochemical-Based Systems

IEC 62933-5-2:2020

Flow Battery Energy Systems for Stationary Applications-Part 2-2: Safety Requirements

IEC 62932-2-2

IEEE Recommended Practices and Requirements for Harmonic Control in Electric
Power Systems

IEEE 519

Standard for Interconnection and Interoperability of Distributed Energy Resources
With Associated Electric Power Systems Interfaces

IEEE 1547

*Standard Communications Specification for Utility-Scale Energy Storage System

MESA-ESS

Standard on Explosion Protection by Deflagration Venting

NFPA 68

Standard on Explosion Prevention Systems

NFPA 69

ANSI/CAN/UL Standard for Energy Storage Systems and Equipment

UL 9540

Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy
Storage Systems

UL 9540A

MESA: modular energy storage architecture.
*Under development.
november/december 2020	

ieee power & energy magazine 	

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IEEE Power & Energy Magazine - November/December 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2020
