METATECH CORPORATION CAPABILITIES
Corporation is a small veteran-owned and operated business of highly-qualified
scientists and engineers with broad experience (many employees with 30 - 40
years of experience) in developing technically sound and innovative solutions
to problems in all areas of electromagnetic environmental effects, including:
electromagnetic interference and compatibility (EMI/EMC), geomagnetic storm
assessments and protection, nuclear electromagnetic pulse prediction,
assessments, protection and standardization (e.g. HEMP and SREMP), and intentional
electromagnetic interference (IEMI) assessments, protection and
This brochure has
been prepared to familiarize current and potential customers with our services,
products, and resources.
Electromagnetic Interference (EMI)
Definition: "Degradation of the performance of a piece of
equipment, transmission channel, or system caused by an electromagnetic
disturbance." (ANSI C63.14, 1992; IEC 60050 (161), 1990)
What We Do: Metatech provides analysis services for the various
EM disturbances and their effects, including combined effects on systems,
subsystems and equipment.
Example: The Geomagnetic Storm Data Project
Metatech began working
in 1991 to study magnetic storm effects on power and communications lines. The objective of the project was to
understand the relationship between geomagnetic field fluctuations and the
resulting electric fields, which couple to long lines. Metatech supplied the measurement
equipment and data analyses, and Minnesota Power provided access to the Forbes
facility (a high voltage power substation located in northern Minnesota). This project ended in 2008, when enough
data had been collected.
facility was unique in that it had two insulated communications lines available
that were oriented in approximately N/S and E/W directions and were about 60 km
in length. Given the line
resistances and the load parameters, we were able to compute the average
electric field over the length of the line from the measured current. The experiment also provided a
measurement of the geomagnetically induced current (GIC) on the neutral of a
500-kV power line originating near Winnipeg, Canada, which is 500 km north of
Forbes. A 3-axis fluxgate
magnetometer was used to measure the geomagnetic field variations at the Forbes
facility at a sample rate of 1 sample every 2 seconds. At the time this was one of the fasted
time-resolution measurements made in the U.S.
measurements of the geomagnetic field components, the average electric fields
in two directions and the currents flowing on two power transformer neutrals in
a high voltage substation were all available on a time-tied basis, it was
possible to examine the relationship between the calculated and measured
electric fields and the induced quasi-dc power line currents. Measurements were made on a continuous
basis, and data were collected each month. The data were downloaded for immediate examination when severe magnetic
storm activity occurred or when an electrical power anomaly had been reported.
developed the data acquisition system, its controlling software, and analysis
tools for studying the data. Results can still be displayed in a number of ways. The accompanying figure shows a comparison
of a measured electric field with a calculated electric field derived from the
measured geomagnetic field and a deep-earth model of the earth conductivity in
of the measured E/W electric field and the calculated electric field using
local magnetic field measurements and a deep-earth conductivity model.
After the physics of the geomagnetic storm coupling
model was fully understood in the late 1990s, Metatech performed assessments of
high-voltage power grids in the UK, Norway, Sweden, and Japan. From 2001 to 2007 Metatech personnel
provided severe geomagnetic storm assessment information for the overall U.S.
power grid to the U.S. EMP Commission. From 2009 to 2011 Metatech performed assessments of the vulnerability of
U.S. regional power grids for power companies. In addition, work was done for FERC to
establish both the threat of geomagnetic storms to the power grid and also to
offer solutions in terms of hardening and operational measures; the report is
Meta-R-319 and is published at http://web.ornl.gov/sci/ees/etsd/pes/ferc_emp_gic.shtml.
Electromagnetic Compatibility (EMC)
Definition: "The capability of electrical and electronic
systems, equipment, and devices to operate in their intended electromagnetic
environment within a defined margin of safety, and at design levels of
performance, without suffering or causing unacceptable degradation as a result
of electromagnetic interference." (ANSI C63.14, 1992)
What We Do: Metatech provides EMC services to customers seeking
reliable analyses of electromagnetic emissions or immunity in support of EMC
protection and/or testing.
Example: Analysis of GTEM Fields
In early 1994
Metatech began an analysis program to study the response of small electronic
systems exposed to EM fields in GTEM test cells. The purpose of this effort was to
provide a better understanding of the interaction of test objects with the GTEM
fields through a series of 3D calculations performed with advanced computer
codes developed by Metatech. Results from this study have been used to evaluate the fidelity of box
tests in the GTEM cell.
Transverse Electromagnetic Mode) was a relatively new development in the field
of EMC testing in the 1990s. The cell
was developed by Diethard Hansen and Dietrich Koenigste in 1984 at the EMI
Control Center of Asea Brown Boveri Ltd. in Baden, Switzerland. More than 200 GTEMs had been installed
performed 3D calculations over a range of parameters, and plots were generated
showing contours of peak fields at a number of ranges from the source and at
specific frequencies between 50 to 500 MHz. The example shown below is a
three-dimensional contour of the maximum peak predicted total electric field
strength in dBV/m in a plane perpendicular to the GTEM longitudinal axis. These types of computations were later
extended to pulse measurements, and it was found that the GTEM waveguide is an
excellent method to test equipment to HEMP and IEMI field environments.
In recent years Dr. William Radasky has served as
co-convenor of the IEC Joint Task Force on TEM Waveguides. This JTF is developing a new edition of
a test standard for industry (IEC 61000-4-20) to allow the use of TEM
waveguides for EMC compliance testing and also for testing fast transients such
as those related to HEMP and IEMI.
High-Altitude Electromagnetic Pulse (HEMP) and
Intentional Electromagnetic Interference (IEMI)
HEMP Definition: "The electromagnetic radiation caused by
Compton-recoil electrons and photoelectrons from photons scattered in the
materials of the nuclear device or in a surrounding medium as the result of a
nuclear explosion. The resulting electric and magnetic fields may couple with
electrical and/or other electronic systems to produce damaging current and
voltage surges." (ANSI C63.14, 1992)
Definition: “Intentional malicious generation of electromagnetic
energy introducing noise or signals into electric and electronic systems, thus
disrupting, confusing or damaging these systems for terrorist or criminal
purposes.” (IEC 61000-2-13, 2005)
What We Do: Metatech is a key contributor to EMP research in the
areas of High-altitude and Source Region EMP environments and coupling and in
the development of hardening and testing technologies including military
standards, specifications, and handbooks. Major programs include SREMP testing
and analyses at flash x-ray simulators, SREMP and HEMP standards development, HEMP
environment and long-line coupling calculations and direct support for the
design of facilities to achieve HEMP hardening. Our IEMI activities have involved
performing assessments of facilities, performing tests to determine the IEMI susceptibility
of equipment and designing protection for the high-frequency portions of HEMP
and IEMI together. In 2010 Metatech
evaluated the threat of IEMI to the U.S. power grid for FERC and published its
work in Meta-R-323, which is found at: http://web.ornl.gov/sci/ees/etsd/pes/ferc_emp_gic.shtml.
HEMP Example: Metatech personnel have participated along with other
international researchers to develop long-line coupled stresses resulting from
the new IEC HEMP environment waveform for civil systems. In particular,
Dr. Radasky was the project leader for the development of the IEC
conducted environment standard for commercial systems (IEC 61000-2-10). A recent paper at APEMC 2012 illustrated
the fact that HEMP coupling to above ground power lines is a probabilistic
phenomenon (based on random orientation and interaction geometries) as shown
below. This can be an important
factor in the design of power line entries to shielded commercial buildings.
probability that the peak induced HEMP current on an aboveground power line
will exceed the indicated value. The dip angle is for the Earth’s magnetic field and varies according to
one’s location on the Earth.
Example: Metatech personnel have
led the standardization effort in the IEEE with the development of a standard
to protect commercial computers against IEMI and in Cigré C4 to develop a guide
to protect power substation electronics from IEMI.
Qualitative geometry for creating IEMI through external and
Computer Code and Analysis Tool Development
extensive expertise in the development of computer codes and analysis tools to
support a constantly expanding range of problems. Much of this work involves
special purpose applications. Computer codes and analysis tools have been developed
to perform calculations in all areas of electromagnetic environmental effects
including EMC, geomagnetic storms, IEMI and nuclear EMP (HEMP and SREMP). In particular Metatech has designed
computer models to evaluate the generation and coupling of EM transients with
rise times and pulse widths on the order of hundreds of picoseconds.
HEMP and SREMP first principle environment codes, time and frequency domain
transmission line codes, special purpose codes tailored to geomagnetic storm
studies, and calculational techniques, which provide 3D outputs for coupling
Graphical display of the
magnitude of the disturbed geomagnetic B-field (nT) based on measurements
throughout North America at 15:39 UT on 28 October 1991.
SUMMARY OF EXPERIENCE,
SERVICES AND PRODUCTS AVAILABLE FROM METATECH
Development of EM environment and protection standards and specifications for
government (e.g. MIL-STD-461 and MIL-STD-188-125-1, 2).
Development of IEC HEMP and IEMI standards for protecting civil facilities from
high power EM environments.
Development of IEEE and Cigré IEMI standards and guides for protecting computer
equipment and substation electronics from IEMI, respectively.
Consulting support for the design and construction of high-frequency EM
shielded buildings for civil applications to HEMP and IEMI.
Susceptibility assessments for existing buildings and electronics to cover the
threats of HEMP and IEMI.
Evaluations of the susceptibility of high voltage power grids to severe
Electromagnetic test and evaluation program planning, coordination and
Susceptibility testing of low-voltage equipment to HPEM threats including HEMP,
IEMI and geomagnetic storms.
Research into the threat, impacts and protection of the U.S. power grid from
HEMP, IEMI and severe geomagnetic storms. An executive summary and 6 reports may be found on the web at: http://web.ornl.gov/sci/ees/etsd/pes/ferc_emp_gic.shtml.
Development and maintenance of user-friendly PC-based codes to display complex
calculations and/or data.
Breaker BlankitTM product for dealing with cold temperature impacts on SF6 circuit breakers.
Metatech has offices
in Goleta, CA and Albuquerque NM. All Metatech facilities contain
state-of-the-art equipment required to perform research for government,
commercial and international clients.
EM Test Laboratory
Metatech has a
test research laboratory at its Goleta, California facility. The laboratory is
capable of performing high-speed transient measurements and electronic immunity
tests using the IEC 61000-4-4 Electrical Fast Transient generator, the IEC
61000-4-5 Surge generator, and the 61000-4-13 Harmonics generator, among other
Metatech uses the
latest state-of-the-art 64-bit microcomputers for scientific computing, desktop
publishing and remote access to customer computers. These microcomputers
include both the latest PC compatibles with large memory capacity and Apple
Macintosh computers with enhanced color graphics and video editing capability.
Metatech facilities have color laser printers and utilize high-speed
communications between offices and with customers, other researchers, and remote
have modern color laser printers, copy machines, binding equipment, and
scanners, which enable us to produce high-quality publications. All Metatech offices have complete color
capabilities for producing high-quality briefings. The Goleta office has the capability to
create computer-generated video and DVDs. The publications staff provides
editing, layout, and planning support to ensure the quality of our
documents. Metatech primarily employs
Macintosh computers for word processing, report layout, and graphics.
Libraries and Databases
maintains extensive libraries on electromagnetics and related subjects at each
of its offices. These libraries are cataloged on an in-house database system.
Through subscription services and the close proximity of university libraries,
Metatech has fast access to technical publications it may need for its research
performance depends on excellent people. Metatech prides itself on attracting
and maintaining a technical and support staff of the most qualified personnel
available. Metatech is nearly
unique in that the 100% employee-owned company is successfully managed by
experienced scientists and engineers. Rapid response to our customers’ needs is “our calling card”.
GOALS AND APPROACH
The goals set for
Metatech are to:
provide government and industry with technically sound and responsive research
services, and products,
provide Metatech employees with a technically satisfying and financially
rewarding career experience, and
provide Metatech stockholders with an attractive return on investment.
satisfaction and profitability are important goals at Metatech, these goals are
viewed as natural consequences of providing value to our customers and of
exercising prudent management of corporate resources.
Corporate Office is located in Goleta, California (Santa Barbara County). This office is managed by
Dr. William A. Radasky and is located at 358 S. Fairview Avenue, Suite E,
Goleta, California 93117. The Goleta office can be reached by telephone at
(805) 683-5681 or by FAX at (805) 683-3023.
Southwestern Facility is located in Albuquerque, New Mexico (Bernalillo
County). This office, managed by Mr. Christopher W. Jones, is located at
2340 Alamo Ave., S.E., Suite 300, Albuquerque, New Mexico 87106-7378. The
Albuquerque office can be reached by telephone at (505) 243-0681 or by FAX at
Our email address is: email@example.com.