CONTENTS
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Smart Grid
Development Report Unveiled
Protection of
Airport Approach Lighting Systems
Sine Wave
Inverters
Double Conversion
UPS
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Top Story
Smart Grid Development Report
Unveiled
The U.S. Commerce Department’s National Institute of
Standards and Technology (NIST), Gaithersburg, Md., recently released a
report
that proposes priorities for developing technical standards and an
architecture for a U.S. Smart Grid. The Smart Grid is a planned
nationwide network that will use 21st century information technology to
deliver electricity efficiently, reliably, and securely -- while
allowing
increased use of renewable power sources.
The nearly 300-page report, developed and delivered to NIST by the
Electric Power Research Institute (EPRI), Palo Alto, Calif., is part of
the first phase of NIST’s three-phase plan, announced in April, to
expedite development of key standards for the Smart Grid. Available on
the NIST Smart Grid Web
site, the organization will accept public comments on this report
for 30 days after the publication of an upcoming notice in the
Federal Register announcing the report’s availability.
Earlier this year, NIST awarded a contract to EPRI for assistance in
developing the standards framework. EPRI technical experts have
compiled
and distilled recommendations from a variety of Smart Grid
stakeholders,
including technical contributions taken from two EPRI-facilitated,
two-day public workshops. The EPRI report also incorporates
contributions from six expert working groups established by NIST in
2008, and a cybersecurity coordination task group established in 2009.
NIST will use the EPRI report in drafting the NIST Smart Grid
Interoperability Standards Framework. The NIST document will describe a
high-level architecture, identify an initial set of key standards, and
provide a roadmap for developing new or revised standards needed to
realize the Smart Grid. Release 1.0 of the NIST Smart Grid
Interoperability Standards Framework is planned to be available in
September.
A third public EPRI-sponsored Smart Grid interoperability-standards
workshop will be held in early August to engage standards-development
organizations in responding to unaddressed, high-priority needs
identified in the draft standards roadmap. Ultimately, the Federal
Energy Regulatory Commission (FERC) determines whether sufficient
consensus has been reached to implement final standards and protocols
necessary for Smart Grid functionality and interoperability. NIST’s
role is to identify and submit recommendations to FERC for the final
product.
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Industry News
Protection of Airport Approach
Lighting Systems
On Monday, July 27, 2009, a paper session will be held
at the IEEE Power & Energy
Society General Meeting in Calgary, Alberta, Canada on the topic of
reliability of airport approach lighting systems. This paper session
(Investigating Protection of Approach Lighting Systems (ALS) Against
Electrical Surges – authored by members of Howard University and the
FAA) will present simulation and experimental testing results from
tests
performed on electrical protection systems for ALS used in major U.S.
airports. The main focus of the investigations is to validate selected
protection topology needed to safeguard critical individual control
cabinets used by Federal Aviation Administration (FAA) in their ALS.
The
approach used is based on: (a) selection of appropriate protection
topology, (b) simulation of protection systems with practical ground
resistance sensitivity values, and (c) testing of a scaled model based
on laboratory setup and testing. The experimental work via hands-on
destructive tests is being used to provide practical results to confirm
the effectiveness of suggested protection schemes.
New Products & Services
Sine Wave
Inverters
The AEP-1000R Series of pure sign wave inverters from
Schaefer is now UL60950-1 listed. Providing 1kVA of power in a compact
1U rack design, the products are available in three standard input
configurations: 12VDC, 24VDC, and 48VDC. Outputs are regulated to +/-3%
or better. According to the company, a built-in, 4ms to 6ms automatic
bypass switch allows for redundant operation from utility power if the
DC supply drops out.
All models feature comprehensive protection circuitry and a digital
display to monitor/indicate low input voltage, short circuit, input
overvoltage, over temperature, overload, and low battery. The display
also indicates voltage, amperage, power, and temperature. Efficiency is
86% to 92%, depending on the model selected. In addition, Class B EMI
compliance allows for minimum interference to other sensitive
equipment.
For more information, visit
www.schaeferpower.com.
Double Conversion
UPS
The latest addition to Eaton’s 3-phase product
family,
the 9390IT uninterruptible power system (UPS) with double-conversion
technology offers the industry’s smallest footprint at 40kVA,
according to the company. Protecting information technology (IT)
equipment from the most common utility power problems, the 9390IT also
helps to save data center space.
The unit’s compact footprint is attributed to its transformer-less
design and standard internal batteries, which eliminate the need for
external battery cabinets. With Eaton’s Energy Saver Mode, the 9390IT
delivers an efficiency of 99% with double-conversion protection,
according to the company. In addition to the cost savings, this
enhanced
efficiency extends battery runtimes and produces cooler UPS operating
temperatures, extending component life and increasing reliability and
performance.
For more information, visit www.eaton.com/9390IT.
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