EnerNex Strengthens West Coast Technical Consultancy Presence
EnerNex, a CESI company, today announced that it is bolstering its technical consultancy practice on the West Coast with Jens Schoene, Director of Research Studies, moving to Southern California. Schoene joins Kay Stefferud, Director of Implementation Services, in supporting the company's strong relationships with major partners in the industry (large utilities, RTO/ISO, independent vendors). T...
[A Publication From Our CESI Partner]
CHANGING BALANCES:
THE MIDDLE EAST AND THE ENERGY TRANSITION
CESI's 14th issue of The Energy Journal focuses on the Middle East, and the Gulf countries in particular, considered one of the most fast-changing areas in the world. Despite their historical role of leadership in the fossil fuel sector, these Countries are all determined to become key players of the energy transition. In particular, the magazine explores...
EnerNex Awarded USTDA-Funded Smart Grid Study to
Improve the Côte d'Ivoire Grid
Released via BusinessWire.com
Knoxville, Tenn., USA, June 18, 2019 —EnerNex, a CESI company, today announced it has been awarded a U.S. Trade and Development Agency (USTDA)-funded Smart Grid Study project to support Côte d’Ivoire Énergies (CI-ENERGIES) in improvements to the Côte d'Ivoire grid.
The Smart Grid Study will benchmark global best practices for reducing elect...
California Utilities Define New Smart Inverter Capabilities
Originally published in the IEEE Smart Grid June 2019 Newsletter
Kay Stefferud, Director of Implementation Services
kay@enernex.com
865-770-4867
California’s phased implementation of smart inverter functionality addresses power quality issues including issues caused by independent and intermittent renewable energy sources. Recommendations from California’s Smar...
Episode #12 | The Best of The Energy Exchange Season 1
As we conclude Season 1 of The Energy Exchange, host Ron Chebra gives us an overview of what's been covered, adding commentary around some of the most interesting topics in the electric power industry: big data analytics, enterprise architecture, pre-pay, standards and more. Listen in to this highlight reel and get a preview of what's to come in Season 2.
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Wind Plant Transient Evaluation Studies
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. Wind plant collector circuit breaker opening-and-closing operations and lightning surge events are important potential sources of thes...
Electric Power Systems Flicker Analysis
By: Bikash Poudel, Senior Consultant
bpoudel@enernex.com
865-218-4600 x6168
Electric power systems flicker is a human perception of change in brightness level of lighting. The intensity of flicker is dependent on both the frequency and the magnitude of voltage fluctuations. There had been studies that showed the variations of voltage as small as 0.3% in the frequencies around 8.8 Hz can ...
Effective Angle Prediction Algorithm for Utilization of PMU Data: Toward Prevention of Wide Area Blackouts
Published via IEEE Xplore
Abstract
Advanced state estimation and angle prediction algorithms utilizing the data measured by Phasor Measurement Units (PMU) can limit the spread of wide area blackouts. Advanced prediction analysis provides information on the overall condition of the power system and allows for the most efficient remedial action...
Breaker Switching Analysis for Wind Power Plants
By: Bikash Poudel, Senior Consultant
bpoudel@enernex.com
865-218-4600 x6168
Vacuum Circuit Breaker (VCB) switching for protection and control operations in electric power systems may cause high frequency transients overvoltage that can affect the transformers nearby. These transients exhibit phenomenon such as current chopping, pre-strike and re-strike. Studies done by EnerNex h...
Fault Induced Delayed Voltage Recovery (FIDVR) Phenomenon:
Modeling and Guidelines
By: Sarina Adhikari, Senior Consultant
sadhikari@enernex.com
865-218-4600 x6177
Broadly speaking, voltage sensitive loads are classified into two different categories: static or steady state, and dynamic loads. Accurate modeling of loads in the simulation environment that can closely mimic the behavior of the real-world load dynamics is a b...
