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<p><a
href=”http://www.opnet.com/university_program/index.html%20%20″><span
style=’text-decoration:none;text-underline:none’><img border=0 width=790
height=195 id=”_x0000_i1026″ src=”university_title_1.gif”></span></a></p>
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<td width=”19%” style=’width:19.0%;padding:0in 0in 0in 0in’>
<p>&nbsp;</p>
</td>
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<p><span style=’display:none;mso-hide:all’><o:p>&nbsp;</o:p></span></p>

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<p align=center style=’text-align:center’><img border=0 width=267 height=13
id=”_x0000_i1028″ src=spacer01.gif><br>
<a href=”http://www.opnet.com/”><span style=’text-decoration:none;text-underline:
none’><img border=0 width=172 height=48 id=”_x0000_i1029″ src=opnet.jpg></span></a></p>
<p align=center style=’text-align:center’><span style=’font-size:10.0pt’>OPNET
Technologies<br>
<st1:address w:st=”on”><st1:Street w:st=”on”>7255 Woodmont Avenue</st1:Street> <br>
<st1:City w:st=”on”>Bethesda</st1:City>, <st1:State w:st=”on”>MD</st1:State> <st1:PostalCode
w:st=”on”>20814</st1:PostalCode></st1:address><br>
Tel: 240-497-3000<br>
Fax: 240-497-3001<br>
E-mail: <a href=”mailto:university@opnet.com”>university@opnet.com</a><br>
Web: <a href=”http://www.opnet.com/” target=”_blank”>www.opnet.com</a></span></p>
<p align=center style=’text-align:center’><span style=’font-size:10.0pt’>�
2008<a href=”../”> OPNET Technologies</a>, Inc.<br>
OPNET and OPNET Technologies Inc.<br>
are registered trademarks of OPNET. <br>
All trademarks are the property of their<br>
respective owners and are used herein <br>
for identification purposes only.</span></p>
</td>
<td width=”73%” valign=top style=’width:73.0%;padding:0in 0in 0in 0in;
height:1346.25pt’>
<p><b><img border=0 width=634 height=11 id=”_x0000_i1030″ src=spacer01.gif></b><br>
<b>University: </b>University of Michigan <b><br>
Professor:</b> Dr. James Moyne<br>
<b>Department: </b>Xen Laboratory-Engineering Research Centre</p>
<p>&nbsp;<strong>Research:<o:p></o:p></strong></p>
<p style=’text-align:justify’>At the Xen Lab, the research
focus is related to network performance aspects of the &#8216;Smart
Grid&#8217;, which is considered to be a prominent solution for a future
power grid highlighting higher penetration of renewable generation and
improved fault response. This phenomenon of renewable generation and electric
vehicle loads, along with other new technologies, will require an accurate
grid monitoring system which helps to predict the future loads and thereby
gives sufficient time to react to instabilities. Current legacy SCADA systems
used in wide area measurement just collect 2 sample per seconds compared to
more advanced smart grid devices such as the PMU, which transmits data at 30
samples per second. In order to facilitate optimal usage of the PMU, PMU
clocks should be synchronized to within 1 microsecond of UTC. The recent
advancements in the field of time synchronization have led to the development
of IEEE 1588 (PTP) which theoretically can synchronize clocks with an
accuracy as low as 10 nanoseconds. Based upon this background information,
our research is to evaluate the performance and capabilities of IEEE 1588 in
Smart Grid networks.</p>
<p style=’text-align:justify’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify’><b style=’mso-bidi-font-weight:
normal’>OPNET Use:<o:p></o:p></b></p>
<p style=’text-align:justify’>The current research with OPNET
focuses on simulating a real time PMU-PDC communication systems integrated
with the IEEE 1588 protocol included in the synchronization path, and check
the effect of network traffic on the PMU synchronization. Scenarios such as
shared and dedicated models of PMU-PDC networks previously developed in OPNET
are tested for the realistic substation traffic profiles. Once the base
network is built, the IEEE 1588 protocol will be implemented by creating new
nodes in OPNET and augmenting them to the existing ethernet server models.
This final system will be tested for different loads and the network delay,
utilization etc. of the message from PMU and PDC will be calculated. The
eventual goal will be to build a simulation framework within OPNET which will
be capable of evaluating real world networks with IEEE 1588 performance
metrics.</p>
<p style=’margin-bottom:0in;margin-bottom:.0001pt’><o:p>&nbsp;</o:p></p>
<p style=’margin-top:0in’><strong>Papers:<o:p></o:p></strong></p>
<p style=’margin-top:0in’><strong>Title: Smart Clocks Have A Hand in the Smart
Grid</strong></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’>This paper discusses various ways in which clock synchronization
affects analysis and performance of the power grid, and presents a few
projects related to the technology. Clock synchronization is becoming an
increasingly important characteristic of modern wide area monitoring and control
systems such as the power grid. It provides an opportunity to coordinate
control actions and measurement instants across hundreds of miles and
numerous network topologies. Devices and networks have advanced to a point
where synchronization across a wide area can be achieved within 1&#956;s of
UTC (Coordinated Universal Time). Along with these advances in clock
synchronization must come a shift in the way analysis is performed. Modeling techniques
must incorporate the effects of a clock synchronized device, and control
techniques can leverage the knowledge of&#8221;time&#8221; to achieve unique
results. Preliminary work has demonstrated the ability of various commercially
available devices to provide reliable 1 &#956;s synchronization of clocks,
and large variation across devices in terms of clock performance under
transient events. The work in progress involves the use of OPNET to model a
scenario and implement the clock synchronization and evaluate the performance
of the network.</p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’><o:p>&nbsp;</o:p></p>
<p style=’text-align:justify;mso-layout-grid-align:none;
text-autospace:none’>&nbsp;</p>
<p><strong><span style=’font-size:10.0pt’>OPNET Technologies,</span> </strong><span
style=’font-size:10.0pt’>Inc. is a leading provider of solutions for managing
networks and applications. OPNET’s best-in-class solutions address <a
href=”http://www.opnet.com/solutions/application_performance/ace.html”>application
troubleshooting</a>, <a
href=”http://www.opnet.com/solutions/application_performance/panorama_production.html”>application
monitoring</a>, <a
href=”http://www.opnet.com/solutions/application_performance/acelive.html”>network
monitoring</a>, <a
href=”http://www.opnet.com/solutions/network_operations/it_sentinel.html”>network
configuration management</a>, <a
href=”../solutions/capacity_management/itguru_net_planner.html”>network
planning</a> , and <a
href=”http://www.opnet.com/solutions/network_rd/modeler.html”>network
simulation</a>. OPNET&#8217;s solutions have been operationally proven in
thousands of customer environments worldwide, including corporate and
government enterprises, government and defense agencies, network service
providers, and network equipment manufacturers. For more information about <a
href=”http://www.opnet.com/”>OPNET</a> and its products, visit <a
href=”http://www.opnet.com”>www.opnet.com</a>.</span></p>
<p><a href=”research.html”></a></p>
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