skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Grid-Following Inverters and Synchronous Condensers: A Grid-Forming Pair?: Preprint

Abstract

As power systems across the globe continue to achieve higher instantaneous penetrations of power electronic converterinterfaced renewable sources, the stability of these power systems is challenged because of the removal of synchronous machines, from which stability is traditionally derived. Although technological solutions to these stability challenges are on the horizon, such as the use of grid-forming inverters, they are not yet widely applied to larger power systems, which presents operational challenges for power systems achieving these high instantaneous penetrations today. An interim solution using existing technologies is to pair synchronous condensers with grid-following inverters, which might prolong the stability of an operating power system while synchronous generators are turned off during periods of high renewable energy availability. This work examines the transient stability of such a solution using PSCAD simulations of a two-bus system coupled to a variedlength transmission line, with a synchronous condenser at one bus and a grid-following inverter with grid-support functionality at the other. The system is exposed to load step, balanced fault, and unbalanced fault perturbations. It was found that this simple system returned to a steady state for transmission line lengths up to 125 km after 10% load steps, or a variety of fault types.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1605700
Report Number(s):
NREL/CP-5D00-75848
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2020 Clemson University Power System Conference, 10-13 March 2020, Clemson, South Carolina
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; grid-following inverters; synchronous condensers; PSCAD; inertia

Citation Formats

Kenyon, Richard W, Hoke, Anderson F, Tan, Jin, Kroposki, Benjamin D, and Hodge, Brian S. Grid-Following Inverters and Synchronous Condensers: A Grid-Forming Pair?: Preprint. United States: N. p., 2020. Web.
Kenyon, Richard W, Hoke, Anderson F, Tan, Jin, Kroposki, Benjamin D, & Hodge, Brian S. Grid-Following Inverters and Synchronous Condensers: A Grid-Forming Pair?: Preprint. United States.
Kenyon, Richard W, Hoke, Anderson F, Tan, Jin, Kroposki, Benjamin D, and Hodge, Brian S. Mon . "Grid-Following Inverters and Synchronous Condensers: A Grid-Forming Pair?: Preprint". United States. https://www.osti.gov/servlets/purl/1605700.
@article{osti_1605700,
title = {Grid-Following Inverters and Synchronous Condensers: A Grid-Forming Pair?: Preprint},
author = {Kenyon, Richard W and Hoke, Anderson F and Tan, Jin and Kroposki, Benjamin D and Hodge, Brian S},
abstractNote = {As power systems across the globe continue to achieve higher instantaneous penetrations of power electronic converterinterfaced renewable sources, the stability of these power systems is challenged because of the removal of synchronous machines, from which stability is traditionally derived. Although technological solutions to these stability challenges are on the horizon, such as the use of grid-forming inverters, they are not yet widely applied to larger power systems, which presents operational challenges for power systems achieving these high instantaneous penetrations today. An interim solution using existing technologies is to pair synchronous condensers with grid-following inverters, which might prolong the stability of an operating power system while synchronous generators are turned off during periods of high renewable energy availability. This work examines the transient stability of such a solution using PSCAD simulations of a two-bus system coupled to a variedlength transmission line, with a synchronous condenser at one bus and a grid-following inverter with grid-support functionality at the other. The system is exposed to load step, balanced fault, and unbalanced fault perturbations. It was found that this simple system returned to a steady state for transmission line lengths up to 125 km after 10% load steps, or a variety of fault types.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {3}
}

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.

Save / Share: