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Title: INVESTIGATION OF A DYNAMIC POWER LINE RATING CONCEPT FOR IMPROVED WIND ENERGY INTEGRATION OVER COMPLEX TERRAIN

Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of power line to be based on real-time conductor temperature dependent on local weather conditions. In current practice overhead power lines are generally given a conservative rating based on worst case weather conditions. Using historical weather data collected over a test bed area, we demonstrate there is often additional transmission capacity not being utilized with the current static rating practice. We investigate a new dynamic line rating methodology using computational fluid dynamics (CFD) to determine wind conditions along transmission lines at dense intervals. Simulated results are used to determine conductor temperature by calculating the transient thermal response of the conductor under variable environmental conditions. In calculating the conductor temperature, we use both a calculation with steady-state assumption and a transient calculation. Under low wind conditions, steady-state assumption predicts higher conductor temperatures that could lead to curtailments, whereas transient calculations produce conductor temperatures that are significantly lower, implying the availability of additional transmission capacity.
Authors:
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Publication Date:
OSTI Identifier:
1166029
Report Number(s):
INL/CON-14-31247
DOE Contract Number:
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting and 11th International Co,Chicago, IL,08/03/2014,08/07/2014
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
DOE - EE
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 13 HYDRO ENERGY; 14 SOLAR ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; 29 ENERGY PLANNING, POLICY AND ECONOMY; 42 ENGINEERING; COMPUTERIZED SIMULATION; FLUID MECHANICS; TRANSMISSION; WIND CFD; Computational Fluid Dynamics; Dynamic Line Rating; Transmission; Wind