Hospital Transformer Failure Transient Investigation
By: Tom Grebe, Principal Consultant
tgrebe@enernex.com
865-770-4880
Power system apparatus, such as transformers, switchgear, and cables may be exposed to various types of transients. High-frequency transients and very steep overvoltages may cause problems for electrical equipment because they can cause local overstressing of the insulation system. Vacuum circuit breaker (VCB) openi...
Company Surpasses 12 Gigawatts in Renewable Energy Projects; 500 Million Smart Meters Deployed in Grid Modernization Projects
December 21, 2016 05:30 AM Eastern Standard Time
KNOXVILLE, Tenn.--(BUSINESS WIRE)--EnerNex, an electric power research, engineering and consulting firm, announced they have surpassed 12 gigawatts (GW) on renewable energy development projects.
In working with two of the three largest wind farm owners in North America, EnerNex h...
Justifying the Cost of DER Hosting Capacity Studies and Investments
By Jeremy Laundergan, Vice President of Consulting Service
As state and federal policies in the United States continue to advocate and mandate lower carbon emissions from the electric power industry with a higher utilization of renewable energy resources, the electric transmission and distribution grid needs to have engineering analysis performed to ensure electric power delivery safet...
Around the Thanksgiving table, we're all supposed to list the things, stuff and people we are thankful for. This year, I'm going to add an editor's note to that tradition---namely what articles from the Energy Central communities made my list.
6. One model to run the distribution grid
Doug Houseman, VP of EnerNex, is always our "go-to" guy for the best insights into distribution: how it does run, how it should run, how it could be done more effici...
Multiple Prestriking Phenomenon in High Voltage Transmission Substations: Modeling and Simulation
Published via IEEE Xplore
Authors
Sarina Adhikari, EnerNex
Chandra Pallem, EnerNex
David Mueller, EnerNex
Tom Grebe, EnerNex
Bob Zavadil, EnerNex
Kevin Little, Transmission Technical Support, Duke Energy
Abstract
This paper presents the prestriking and re-striking phenomenon caused by switching disconnect switches in a high-volta...
A Look into the Heart of the DSO: Sun Qi's First Day as an Intern
By Doug Houseman
Sun Qi is the new intern with a master’s degree in Power Engineering at the DSO in California and is being introduced around on his first day.
His first stop of the day is with the customer portal team, who are running the statistics from the overnight operation of the portal and looking at the status of all of the feeds to the customer portal. The portal team confir...
The DSO from a Customer’s Point of View: A Case Study
By Doug Houseman
Jose Q. Public comes home with a new widget to plug into his home to provide new entertainment channels and options. Jose plugs the device into the power in his home and then uses his phone to connect the widget to his home management system. The home management system recognizes the new widget and pulls the drivers and supporting information from the widget’s manufacturer’s server...
Who Art Thou DSO?
By Doug Houseman
In the not distant future the California Public Utilities Commission (CPUC) will have a major decision to make about how the distribution grid is operated. That decision will revolve around who will be allowed to be the Distribution System Operator (DSO). In various forums, a number of stakeholders have express opinions on who should be the DSO. Several have already made small moves to establish their credibility to ...
By Bob Zavadil, Executive Vice President and Co-Founder
Bob Zavadil, EVP and Co-Founder of EnerNex, actively participates in the Utility Variable-Generation Integration Group (UVIG) and acts as the chair for the VG Modeling and Interconnection User Group. This post originally appeared on uvig.org.
Large renewable generating facilities – especially wind and solar – have been full-fledged citizens of the bulk electric system (BES) in the U.S. for almost...
25-year industry veteran recognized for overall advancement of the power industry
October 04, 2016 09:00 AM Eastern Daylight Time
KNOXVILLE, Tenn.--(BUSINESS WIRE)--EnerNex, an electric power research, engineering and consulting firm, announces Co-founder and Executive Vice President Robert Zavadil has received the 2016 Wayne E. Knabach Award for Excellence in Power.
Zavadil has worked on electric power system issues for wind generation for over 25 ye...
