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Please join us at:
Solar Power International
24 - 27 September 2018
Booth #2884
Anaheim, CA

Come hear UL experts present:

UL3001 New Safety Standard for Distributed Energy and Storage Systems Often Called Microgrids
Tim Zgonena, Principal Engineer
11:20 AM - 11:40 AM  |  Wednesday, September 26, 2018

Both Canada and the US have equipment safety and performance standards for the many renewable and distributed generator sources, but there is not an overarching system level standard that addresses the interaction and protection of these power sources. The new UL3001, Standard for Safety for Distributed Energy Generation and Storage Systems covers the safety and performance of distributed energy resource systems. These systems may be comprised of distributed energy sources such as photovoltaic arrays, fuel cells, generators and or wind turbines in homogenous or hybrid configurations, energy storage systems, grid interface equipment and related equipment to accomplish  functionality of the distributed energy system. These requirements address the safety of system design, integration and operation. They also cover the performance of these systems as it relates to grid operability, interface with premises wiring systems, and performance of the equipment in the various modes of system operation. 

The UL3001 is not recreating existing standards and codes, but instead it is intended to provide the coordination and linkage between these separate documents. Renewable power sources have specific installation and protection requirements to maintain them within their safe operating parameters and limits to prevent electric shock, fire and mechanical hazards. There is a real need for coordination of these different sources with different operating parameters and limits. 

The UL3001 requirements will address the safety of system design, integration and operation. They will also cover the performance of these systems as it relates to grid operability, interface with premises wiring systems, and performance of the equipment in the various modes of system operation. To accomplish this, UL3001 is intended to reference the various IEEE performance based standards to make use of existing work and also address the critical safety aspects needed for code compliance of the end installation. 

The Heat is on PV Modules
Kent Whitfield, Principal Engineer
3:05 - 3:25 PM  |  Thursday, September 27, 2018

PV modules are evaluated to several domestic and international safety and performance standards, however, the majority of these presume an operational climate that does not exceed 40°C ambient air temperature coincident with full sun irradiance (i.e., 1000W/m2). Many new and emerging markets, on the other hand, have climates that routinely exceed this temperature as do some domestic locations with good solar resource. The consequence of temperatures above 40°C, coincident with high irradiance, is that products may exceed their material temperature ratings with an impact to both safety and performance as a result. This presentation will describe both modeling and actual system operating temperatures to understand how hot modules really get in the field as a function of their installation method (for example, open-rack versus building integrated) and their operating climate. A module’s maximum operating temperature, however, is rarely significant by itself since the clear majority of failure modes require time at temperature to develop with a major distinction made between short-term, or catastrophic, and long-term, or cumulative damage, failure modes. Both types of failure modes will be discussed as well as a strategy for risk reduction of each. A means to characterize a climate based upon knowledge of a failure mode’s Arrhenius behavior, specifically, its activation energy, will be presented for long-term failure modes and how this can drive not only better standards, but better testing as well. Finally, this presentation will discuss the status and approach being taken in the international standards writing body, IEC TC82 WG2, to address the challenge of high-temperature module operation.



5:00 – 6:00 PM  |  Tuesday, Sep 25, 2018

UL 9540A, a Means to Evaluate Energy Storage System Fire Characterization for an Installation
Laurie Florence, Principal Engineer
Assessing Efficiency of Inverters and Distributed Energy Resources
Scott Picco, Business Development Manager

More Meaningful Durability/reliability Testing for Bankability Studies
Kent Whitfield, Principal Engineer

Transitioning to UL61730 PV Safety Standard
Kent Whitfield, Principal Engineer
UL1741 and UL62109-2, Advanced Technology Inverter Progression (Filling the Gap Between IEEE 1547 and 1547.1)
Tim Zgonena, Principal Engineer
UL3741 PV Hazard Control - Reducing Hazards for Firefighters
Tim Zgonena, Principal Engineer

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