Energy Storage Systems – An Update on Developing Codes and Safety Standards Summary 2016: Laurie Florence Principal Engineer Large Batteries, Fuel Cell Systems & Capacitors UL LLC [email protected] UL and the UL logo are trademarks of UL LLC © 2016 Leader in Advanced Battery Safety Science Research Design Advisory Testing & Certification Thought Leadership Battery Standards UL 810A: Electrochemical Capacitors UL 1973: Stationary Applications UL 2271: Light Electric Vehicles UL 2272: Electrical Systems for SelfBalancing Scooters UL 2580: Electric Vehicles UL 9540: Energy Storage Systems UL 3001: Distributive Generation and2 ES UL 3030: UAV Electrical Systems US DOE Activities US DOE Work: Safety Work Shop: Feb. 18, 2014 in Albuquerque NM •PNNL 23578, Overview of Development and Deployment of Codes, Standards and Regulations Affecting Energy Storage System Safety in the United States (August 2014) •PNNL 23618, Inventory of Safety Related Codes and Standards for Energy Storage Systems (September 2014) •US DOE Energy Storage Safety Strategic Plan (December 2014) •Energy Storage Safety Working Group (ESSWG) (March 2015) •Strategic Objectives: •Safety Validation and Risk Assessment R&D •Codes and Standards •Safety Outreach and Incident Response 3 US DOE Activities Electric Energy Storage Safety Working Group (EESWG): Separate Working Groups to Address Gaps Established: CSR Working Group has: • Identified Gaps: • For Safety Outreach and Incident Response • For Safety Validation and Risk Assessment R&D • With Codes, Standards and Regulations • 1. Safety Outreach and Incident Response: • Led by David Rosewater (SNL) • 2. Safety Validation and Risk Assessment R & D • Led by Summer Ferreira (SNL) • 3. Codes, Standards and Regulations (CSR) • Led by David Conover (PNNL) • Identified Codes and & Standards to review and to make proposals (tracking code cycles, etc.) • Agreed to develop an interim guide for installation of ESS considering CSR (short term) • Agreed to develop an ESS Installation Standard (similar to NFPA 853) (a more long term solution) 4 Codes Impacting Energy Storage Codes Impacting ESS in the USA NFPA • • • • • NFPA 1, Fire Code NFPA 70, National Electrical Code (NEC) NFPA 101, Life Safety Code NFPA 5000, Building Code NFPA standard for EESS Installation (TBD) ICC • ICC International Fire Code (IFC) • ICC International Residential Code (IRC) • ICC International Building Code (IBC) IEEE • IEEE C2, National Electrical Safety Code (NESC) NFPA Code Updates Related to Energy Storage NFPA 70 (NEC) New Article 706, Energy Storage Systems Accepted by CMP13 Going through development process for 2017 NEC • 2nd draft meeting Nov 2015 • April 2016 Post final draft for NITMAM review NFPA 1, Fire Code Proposals for Chapter 52 related to energy storage submitted as placeholder during code cycle Going through development process for • First draft out in March 2016 • Second draft out in Jan 2017 NFPA 101, Life Safety Code Proposals for hazardous materials section Going through development process • First proposal available for review 3/2016 6 NFPA Code Updates Related to Energy Storage NFPA opened a public comment period asking for input on a proposed stationary energy storage installation standard project and has asked for volunteers • Proposed scope: new standard addressing the design, construction, installation, and commissioning of stationary energy storage systems • Deadline for comments was March 1st 7 ICC Code Updates Related to Energy Storage ICC IFC ICC IRC IEEE C2, National Electrical Safety Code (NESC) ICC FCAC Task Group Established ICC FCAC Task Group Also Tackling IRC Updates Revisions to IEEE C2 due in January 2016 Developing proposals to update the IRC Revisions due in May 2016 Proposals also due in January 2016 Publication for 2017 NESC Working on New Section 52 Addressing Energy Storage Included in 2018 IFC Proposals due in January 11, 2016 8 Code Proposal Examples NFPA 70 Art 706: • NFPA 70 Proposed ESS clause 706 will require energy storage systems to be “Listed” if it is a Self contained factory matched system • System of Pre-engineered matched components – components that are tested and Listed separately and installed in the field • Circuit requirements • Overcurrent protection • Electrochemical Energy Storage Systems • Flow Battery Energy Storage Systems ICC IFC: Proposed revisions to Chp. 608: • • • • • Introduction of different chemistries Listing of systems Requirement for FMEA related to fire safety Separation of battery arrays Maximum allowable quantities and sizes requiring permitting based upon kWh instead of electrolyte quantities 9 Standards Impacting Energy Storage STANDARDS IMPACTING ENERGY STORAGE UL • UL 1973, Batteries for Use in Light Electric Rail (LER) and Stationary Applications • UL 9540, Energy Storage Systems and Equipment • UL 1741, Inverters, Converters, Controllers and Interconnection System Equipment for Use with Distributed Energy Resources IEEE • IEEE 1547, Interconnecting Distributed Resources with Electric Power Systems • IEEE 1547.1, Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems • IEEE 1635/ASHRAE Guideline 21, Guide for the Ventilation and Thermal Management of Batteries for Stationary Applications • IEEE P2030.2, Guide for Design, Operation, Maintenance of Battery Energy Storage Systems, both Stationary and Mobile, and Applications Integrated with Electric Power Systems 10 UL Standard Updates Related to Energy Storage UL 1973 • Ballot for 2nd edition of ANSI UL 1973 completed and voted affirmative • Publication of 2nd edition ANSI UL 1973 by 2nd quarter of 2016 • Re-open UL 1973 for Bi-National Standard for US and Canada 2016 UL 9540 • Ballot for1st edition of ANSI UL 9540 out in November 2016 • Ballot reached consensus • Recirculation ballot to come out 2nd quarter of 2016 • Planned publication 3rd quarter of 2016 • Bi-national ANSI standard for USA and Canada upon publication 11 UL Standard Updates Related to Energy Storage UL 1973 2nd edition revisions Revisions to cell criteria • UL 1642 based cell program • Appendix E (IEC) based cell program Revisions to grounding criteria • More specific grounding construction • Introduction of simplified test based upon specific grounding criteria Clarification on functional safety criteria Revisions to tests of system • • • • Revisions to Temperature Test Addition of simplified Grounding Test Revisions to Drop Test (follow IEC) Revisions to Internal Fire Test • include Sodium Sulfur • Add clarifying language and include time limit for creating TR • Revisions to Appendix B for molten salt batteries (based upon testing experience) • Revisions to Appendix C for flow batteries (based upon testing experience) 12 UL Standard Updates Related to Energy Storage UL 9540 Bulletin Updates Construction • Updates to the Inverter Information • Grid Support Utility Interactive Inverter/converter definition and information based upon updates to UL 1741 • Clarification of enclosure requirements • Walk in Enclosures • Additional guidance on airflow based upon ASHRAE 62 • Additional guidance on wiring • Information on lockout procedures and signage for worker safety • Addition revisions for remote controls • Additional guidance on the safety analysis of the system • Updates to the fire detection and suppression criteria and guidance on fire risk analysis • Updates/clarification for technology sections Tests • • • • Updates on tests for flywheel systems Updates on environmental tests Addition of Impulse Test Revision to External Leakage and Strength tests 13 UL Standard Updates Related to Energy Storage UL 1741 • Revision bulletin to address interactive needs impacting energy storage development in 2016 • New supplement to standard UL 3001 • Distributed Generation and Storage • PINS applied for • Establishment of STP in 2016 • Begin work of development in 2016 14 IEEE Standard Updates Related to Energy Storage IEEE 1547 and IEEE 1547.1 under revision process IEEE P2030.2.1, Guide for Design, Operation, Maintenance of Battery Energy Storage Systems, both Stationary and Mobile, and Applications Integrated with Electric Power Systems • Initial project completion for submission to revision committee IEEE 1635/ASHRAE Guideline 21, Guide for the Ventilation and Thermal Management of Batteries for Stationary Applications • Revision committee established with the same TPS as the 2012 edition of the Guideline • Completion in 2016 15 THANK YOU.