The
Sandia Solar Programs e-newsletter features highlights, key activities, events,
and publications. News is also available on Sandia’s
Energy and Climate website. We welcome your
feedback. Please e-mail comments and suggestions to solar@sandia.gov. We hope you enjoy this valuable resource!
Save the Date, Aug. 29-31, for EPRI-Sandia Symposium on Secure and
Resilient Microgrids
Sandia National Laboratories and the Electric
Power Research Institute (EPRI) invite you to participate in the first annual Symposium on Secure and Resilient Microgrid Design. This event will focus on several technical
challenges in commercial and military microgrids, addressing their design,
system analysis, and grid integration. The symposium will cover the state of
the art in design and operational tools—including design tools such as Sandia’s Microgrid Design Toolkit (MDT)—methods, and research for secure and
resilient microgrids. We plan to address specific grid integration and control
issues when operating in grid-connected and islanded modes. The EPRI-Sandia
Symposium on Secure and Resilient Microgrids will be of particular interest to
facility, utility, and design engineers and researchers.
With the
rapid and exciting growth in the microgrid industry, professionals face the challenge
of selecting appropriate models and toolsets for microgrid analysis, design,
and evaluation and applying these models and tools in a disciplined, transparent,
and effective manner. This workshop will initiate a technical dialogue and
exchange of information about the available models, tools, and practices which
can foster and sustain a community of practice for microgrids, and identify
lessons learned and research gaps that need to be addressed to improve
microgrid designs and evaluations. We
will convene at the Baltimore Marriott Waterfront. More information
available online: View Summary
and Preliminary Agenda, and register
here on or after July 11. Contact:Abraham
Ellis
International Conference on Integration of
Renewable and Distributed Energy Resources (IRED): Coming October 2016
Sandia National Laboratories is involved in organizing the 7th International Conference on
Integration of Renewable and Distributed Energy Resources (IRED). This
year, the IRED conference will take place in Niagara Falls,
Canada, October 24-28, 2016, and will be hosted by EPRI and Natural Resources
Canada. This bi-annual event gathers leading practitioners and researchers from
around the world to share the latest developments related to integration of
renewable energy (RE) and distributed energy resources (DER). The growth of decentralized generation, liberalized markets,
modern power electronics, and the introduction of advanced integrated circuit
technologies are leading to a dramatic change in the management and operation
of electricity grids worldwide. The weeklong conference will focus on the
technical, market, and regulatory issues that challenge the integration of
these sources into the grid. Contact: Abraham Ellis
The 6th PV Performance and Monitoring Workshop, October 24-25, 2016, hosted by Fraunhofer ISE, the IEA PVPS Task 13, and Sandia National Laboratories, will include presentations in the following main topic areas:
PV Performance Modeling and STC: Spectrum, Angle-of-Incidence and Module Temperature Prediction Accuracy on PV Performance
Advanced Modeling: Ray-tracing to Address Bifacial PV Arrays and Shade
Field Monitoring and Model Validation
Technical tours will be offered at Fraunhofer ISE and at a PV installation nearby Freiburg. This workshop brings together solar PV professionals and researchers to learn about and discuss new and important technical issues related to PV performance modeling. This stimulating, interactive workshop will provide valuable information for modelers, model developers, and other users of PV performance model results. Please visit the conference website for more information. Abstracts are due by July 8, 2016. The early-bird registration rate is available until August 12, 2016. Sandia Labs facilitates a collaborative group of photovoltaic (PV) professionals (PV Performance Modeling Collaborative or PVPMC) that is interested in improving the accuracy and technical rigor of PV performance models and analyses. Contact: Josh Stein
Sandia National Laboratories' Jay Johnson recently won the 2016 IEEE Albuquerque Section's "Outstanding Young Engineer" Award for his work in photovoltaic (PV) codes and standards. Jay is involved in numerous standards development organizations tasked with updating the U.S.’s interconnection and interoperability standards for distributed energy resources (DER), including UL 1741 Supplement A, IEEE 1547.1, and SunSpec Alliance Models. Jay is also known for his work in PV arc-fault detection and mitigation, DER grid integration and control, and inverter interoperability research. As part of the award, Jay will be presenting his research at University of New Mexico in September 2016. Some of Jay's related research is listed and linked below:
Sandia Labs’ Photovoltaic Systems Evaluation Lab (PSEL) Marks FY15
Accomplishments & Adds New Capabilities in 2016
Sandia National Laboratories completed a number of enhancements and expansions to its Photovoltaic Systems Evaluation Laboratory (PSEL) facility in fiscal year 2015 (FY15) to expand indoor PV module characterization capabilities at PSEL and upgrade the outdoor laboratory. A new Atonometrics Light Soaking Chamber has just joined PSEL’s existing module flash tester and electroluminescence chamber, giving PSEL the ability to simulate outdoor solar exposure in a continuous, controlled indoor environment. This capability will be used to study metastable electrical performance in thin-film PV modules and early degradation phenomenon in crystalline silicon PV modules. Solar cell and optical characterization equipment is now consolidated in PSEL’s new, expanded indoor laboratory space. (Shown at left, Bruce King, PSEL technical lead, in front of the newly installed light soaking chamber.)
Home to the New Mexico Regional Test Center (RTC), PSEL’s outdoor
laboratory has also received many equipment upgrades built on recent site
upgrades. For example, common PV racking has been installed to accommodate up
to 100 kW of new PV installations. Dubbed the Fastrack, the new installation
was designed to accept PV modules of all common form factors to enable rapid
deployment of systems from new RTC partners. In addition, general racking space
totaling 80 kW has been installed to support PSEL’s R&D projects in
bifacial and CIGS module technologies. With the rapid growth in PV
installations, PSEL has become a net exporter of electricity and electrical
grid-tie capacity has become strained. To address this, PSEL is partnering with
Sandia’s own facilities department to install new, dedicated grid-tie capacity to
enable upwards of 500 kW of additional PV. Contact: Bruce King
Light soaking chamber installed at Sandia’s PSEL (center); custom module-scale EL chamber (background); module flash tester (foreground).
Part of a Smart Grid Research Network, Sandia Labs Participates in CEM7
Sandia National Laboratories participates in the Smart Grid International Research Facility Network (SIRFN), a coordinated network of smart grid research and test facilities working on selected projects around the globe. SIRFN’s collaborative test and evaluation capabilities can be leveraged internationally to improve the design and implementation of smart grids. Interoperability test protocols are used to verify electrical behavior and communications functionality of distributed energy resources. SIRFN researchers, representing a collaboration between RSE (Italy’s Ricerca sul Sistema Energetico), Austrian Institute of Technology, National Institute of Advanced Industrial Science and Technology (AIST) Fukushima Renewable Energy Institute (FREA), and Sandia National Laboratories, presented a new interoperability testing protocol for energy storage systems at the most recent Clean Energy Ministerial (CEM7) in San Francisco, California. The related Distributed Energy Resource Interoperability Testing (DERIT) fact sheet is now available. Contact: Jay Johnson
Sandia Labs Contributes to Solar Industry Innovation: A Partnership
Story
NIST installed 96 Stratasense module level IV sweep units on its 271kW mono-Si system
Hearing of a current-voltage (IV) sweep (or tracing)
product made by a small start-up company, Sandia contacted Stratasense to discuss its compact product that had three features
for studying photovoltaic (PV) performance: (1) it was rated for mounting outdoors
at the PV module, (2) it was self-powered, and (3) it wirelessly reported the
IV sweep data. Sandia and Stratasense subsequently entered into a collaborative
partnership to develop the additional capability of in situ module IV tracing,
something that no other industry products offered. Stratasense developed additional
product capabilities, tested a module-level
prototype, and delivered all units after removing each module from a functioning
string, performing an IV sweep, and returning the module to the functioning
string, until 16 modules had been IV swept. Sandia Labs funded the design development
and provided expert testing and feedback to refine the initial design, and
published its collaborative research, In-Situ Module-Level I-V
Tracers for Novel PV Monitoring.
More recently, Sandia was contacted by the National
Institute of Standards and Technology (NIST) about commercial off-the-shelf
wireless PV string monitoring options for their previously installed PV arrays.
Sandia introduced NIST to the new in-situ capability which would meet the need
for NIST to easily retro-fit its PV with an increased level of monitoring. NIST
ordered 96 Stratasense units for their 271kW monocrystalline silicon array. The
first 24 units were installed in January 2016; the Stratasense system is now
fully deployed and functioning.
Sandia also contracted with Pordis, LLC, to develop a string
level,in-situ,
IV sweep system in late 2014. A functioning 8-string unit is currently in
operation. Sandia researchers have recently published work that used this
Pordis system in Automatic
Fault Classification of Photovoltaic Strings Based on an In Situ IV
Characterization System and a Gaussian Process Algorithm.
No other industry products offerin situ stringIV tracing; existing IV string level sweep instruments are
far more costly than those developed by Stratasense
and Pordis.
Achieving a “pennies per watt” string monitoring
system will encourage utility and commercial scale PV installations to increase
PV monitoring, thereby improving their operations and maintenance (O&M)
activities. Sandia-developed automated analysis of in situ string level data
may be the final piece for improved and affordable utility and commercial scale
PV O&M.
This work is national
laboratory/industry partnership at its best. Contact:
Craig Carmignani
Sandia Labs Researchers Present 20 Papers at PVSC
Sandia National Laboratories was well represented that the 43rd IEEE Photovoltaic Specialist Conference in Portland, OR, in June 2016. Researchers presented work in the following areas: Power Electronics and Grid
Integration, Solar Resource for PV and
Forecasting, PV Modules, Manufacturing,
Systems and Applications, PV and
System Reliability, Characterization Methods, and Space and Specialty
Technologies. See below for links to these and other recent publications.
External Link Disclaimer: The appearance of hyperlinks does not constitute endorsement of the external Web site, the information, products or services contained therein.
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.