Pepco Holdings (PHI) has gone live with their DER Hosting Capacity website http://www.pepco.com/Hosting-Capacity-Map.aspx. The site enables any stakeholder to view an interactive map to determine how much renewable energy and other distributed energy resources can be connected to the distribution system. The Hosting Capacity is calculated using the DEW/ISM software from EDD, and the results are displayed on a geospatial interactive map. The EDD Hosting Capacity algorithm is run against the Integrated System Model of PHI’s distribution system. The ISM is part of EDD’s software solution. The ISM is a geospatial power-flow model that includes PHI’s 1.9M metered customers with 8,760 hourly load models for each customer, 2,248 primary circuits, 356,000 distribution transformers with secondary conductors, 49 downtown networks, 338 substations and approximately 65,000 DER representing 731 MW’s. The advantage of the EDD Hosting Capacity approach using the ISM model is that many thousands of power-flow runs are made so that a highly accurate estimate of hosting capacity can be provided. For further information about EDD products and services, including Hosting Capacity analysis, please visit our website (www.edd-us.com) or contact us (firstname.lastname@example.org) for a product demonstration.
The University of Tennessee has established the Engineering Research Center for Ultra-wide-area Resilient Electric Energy Transmission Networks (called “CURENT”). The purpose of CURENT is to establish a mechanism whereby the educational and research environment can be used to develop better understanding of electric power engineering and related fields, and simulate industrial innovation.
Electrical Distribution Design, Inc. of Blacksburg, VA has been invited and has agreed to join CURENT as an Associate Member as part of the Industrial Partners Program. EDD will provide DEW/ISM software licenses and technical support to the CURENT team.
Member organizations include the University of Tennessee, National Science Foundation, Department of Energy and the State of Tennessee. Partnering Universities include Rensselaer Polytechnic Institute, Northeastern University and Tuskegee University.
The DEW/ISM (Distributed Energy Workstation/Integrated System Model) is a commercial software program for advanced modeling and analysis that is being used by leading electric utilities and related businesses. DEW/ISM provides integrated system models for unbalanced three-phase power flow solutions of transmission, substation and distribution systems of any size and complexity. DEW/ISM is the only power flow software that utilizes Graph Trace Analysis (GTA) for modeling and analyzing electric networks. EDD’s Chief Technical Officer and Virginia Tech professor, Dr. Robert Broadwater, is the inventor of GTA.
At a recent NREL seminar, EDD’s Chief Technical Officer, Dr. Robert Broadwater presented to NREL staff on the capabilities of the DEW/ISM software from EDD to model large Integrated System Models of utility electric grids. The DEW/ISM software package is an advanced modeling and power flow analysis solution that is in commercial production at leading US utilities.
DEW/ISM is the only modeling software that employs the Graph Trace Analysis (GTA) approach. GTA was developed at Virginia Tech to meet the needs of utilities to integrate large complex models with vast amounts of measurement data.
Technical advantages of GTA include: (1) eliminate processing of topology matrices; (2) solve Kirchhoff voltage & current law at every component in the model; (3) no simplification, the model accurately reflects field conditions; (4) readily supports distributed processing; (5) use the same techniques for transmission, substation, distribution in combined or separate models.
Business Advantages for utilities who use DEW/ISM include: (1) maintain an accurate physics-based and geospatial Integrated System Model of the entire system; (2) utilize AMI, SCADA and other measurements directly in power flow analysis; (3) readily accommodate all smart grid requirements for DER, storage, automation, microgrids, and voltage management; (4) automate engineering analysis for interconnection studies, hosting capacity, feeder efficiency and more; (5) cleanup GIS topology errors and support multiple modeling requirements from one accurate source.
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EDD Principal Engineer Dr. Jason Bank spoke recently at the IEEE Green Technologies Conference in Denver. Dr. Bank presentation was part of the panel session titled “Big Data Analytics for Power Systems.”
In recent years, electric utilities have installed and/or connected large numbers of “smart” devices to their distribution systems. These devices have generated billions of measurements that can be useful to engineers and operators.
Legacy software modeling and analysis tools and techniques were developed many years ago when this data was neither available nor required. Flash-forward to today’s environment, where AMI load data, Distribution SCADA, DER, Storage, PMU’s, and Distribution Automation are all growing exponentially.
The DEW/ISM software from EDD has been developed specifically to support the modern electric distribution utility. With the Integrated System Model (ISM), a utility can combine a physics-based geospatially accurate model of the electric system in one model that can associate any measurements for engineering and operations analysis.
In his presentation, Dr. Bank discussed a recently completed project at Pepco Holdings where the DEW/ISM software has been deployed. Some “Big Data” stats for the PHI model include: 1.9M metered customers with 8,760 hourly loads; a load/gen database that back-casts solar contribution for 75,000 PV’s and net metered accounts; and 356,000 distribution transformers with secondary modeled.
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This year the annual users group meeting for National Information Solutions Cooperative (NISC) was held in St. Louis from September 7th through the 14th. There were over 2,500 NISC customer/members in attendance. This was the first year that EDD attended. In August, EDD and NISC jointly announced the completion of an expanded DEW license reseller agreement between the two companies, and also that NISC has made an equity investment in EDD.
At the MIC, Bill Tolley, EDD’s Product Support Manager demonstrated the DEW desktop application in two well-attended sessions. The companies have rolled out the DEW desktop to a group of NISC members who are working as a pilot group. Bill’s presentation was focused on the DEW applications that the NISC pilot group is using. These include Power Flow analysis with time series measurement data, Phase Balancing, Fault Location and Motor Start Analysis.
View the presentation … edd_dew-presentation-at-nisc-mic-2016