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Title: NREL's Controllable Grid Interface for Testing Renewable Energy Technologies (Presentation)

Abstract

This presentation is an overview of NREL's Controllable Grid Interface capabilities for testing renewable energy technologies.

Authors:
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy Wind and Water Power Technologies Office
OSTI Identifier:
1164085
Report Number(s):
NREL/PR-5D00-62998
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2nd International Workshop on Grid Simulator Testing of Wind Turbine Drivetrains, 17-18 September 2014, Clemson University, North Charleston, South Carolina; Related Information: NREL (National Renewable Energy Laboratory)
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 24 POWER TRANSMISSION AND DISTRIBUTION; CONTROLLABLE GRID INTERFACE; CGI; RENEWABLES; NATIONAL RENEWABLE ENERGY LABORATORY; NREL

Citation Formats

Gevorgian, V. NREL's Controllable Grid Interface for Testing Renewable Energy Technologies (Presentation). United States: N. p., 2014. Web.
Gevorgian, V. NREL's Controllable Grid Interface for Testing Renewable Energy Technologies (Presentation). United States.
Gevorgian, V. Mon . "NREL's Controllable Grid Interface for Testing Renewable Energy Technologies (Presentation)". United States. doi:. https://www.osti.gov/servlets/purl/1164085.
@article{osti_1164085,
title = {NREL's Controllable Grid Interface for Testing Renewable Energy Technologies (Presentation)},
author = {Gevorgian, V.},
abstractNote = {This presentation is an overview of NREL's Controllable Grid Interface capabilities for testing renewable energy technologies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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  • This presentation provides a high-level overview of NREL's multi-megawatt testing facilities and capabilities for the grid integration of renewable technologies.
  • The National Renewable Energy Laboratory's (NREL) controllable grid interface (CGI) test system at the National Wind Technology Center (NWTC) is one of two user facilities at NREL capable of testing and analyzing the integration of megawatt-scale renewable energy systems. The CGI specializes in testing of multimegawatt-scale wind and photovoltaic (PV) technologies as well as energy storage devices, transformers, control and protection equipment at medium-voltage levels, allowing the determination of the grid impacts of the tested technology.
  • In order to understand the behavior of wind turbines experiencing grid disturbances, it is necessary to perform a series of tests and accurate transient simulation studies. The latest edition of the IEC 61400-21 standard describes methods for such tests that include low voltage ride-through (LVRT), active power set-point control, ramp rate limitations, and reactive power capability tests. The IEC methods are being widely adopted on both national and international levels by wind turbine manufacturers, certification authorities, and utilities. On-site testing of wind turbines might be expensive and time consuming since it requires both test equipment transportation and personnel presence inmore » sometimes remote locations for significant periods of time because such tests need to be conducted at certain wind speed and grid conditions. Changes in turbine control software or design modifications may require redoing of all tests. Significant cost and test-time reduction can be achieved if these tests are conducted in controlled laboratory environments that replicate grid disturbances and simulation of wind turbine interactions with power systems. Such testing capability does not exist in the United States today. An initiative by NREL to design and construct a 7-MVA grid simulator to operate with the existing 2.5 MW and new upcoming 5-MW dynamometer facilities will fulfill this role and bring many potential benefits to the U.S. wind industry with the ultimate goal of reducing wind energy integration costs.« less
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