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Title: Numerical Oscillation Prevention for PV Inverter Controllers in Quasi-Steady-State Simulators

Abstract

Droop-based PV inverter control methods are popular for preventing overvoltage in low voltage networks with high installations of PV solar. Quasi-steady-state simulators (QSTS) can be used to reduce the computational burden of conducting long-term techno-economic analyses of such PV inverter controllers. If dynamic models for droop-based controllers are directly implemented in QSTS, numerical oscillation occurs and the controllers fail to converge to their steady-state operation. In this paper, a power network sensitivity-based algorithm is proposed for preventing numerical oscillation while implementing active and reactive droop-based PV inverter controllers in quasisteady state simulation tool (e.g. in GridLAB-D). Convergence of the sensitivity-based algorithm is verified using a typical radial distribution feeder. It is found that all three controllers reached converged state in less than 15 iterations.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. South Dakota State University
  2. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1603350
Report Number(s):
PNNL-SA-139435
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Proceedings of the IEEE Power & Energy Society General Meeting (PESGM 2019), August 4-8, 2019, Atlanta, GA
Country of Publication:
United States
Language:
English
Subject:
GridLAB-D, PV inverter control, quasi-steady-state simulation

Citation Formats

Duwadi, Kapil, Dos Reis, Fernando B., Mahat, Rupak, Fourney, Robert, Tonkoski, Reinaldo, Hansen, Timothy M., and Bhattarai, Bishnu P. Numerical Oscillation Prevention for PV Inverter Controllers in Quasi-Steady-State Simulators. United States: N. p., 2019. Web. doi:10.1109/PESGM40551.2019.8973451.
Duwadi, Kapil, Dos Reis, Fernando B., Mahat, Rupak, Fourney, Robert, Tonkoski, Reinaldo, Hansen, Timothy M., & Bhattarai, Bishnu P. Numerical Oscillation Prevention for PV Inverter Controllers in Quasi-Steady-State Simulators. United States. doi:10.1109/PESGM40551.2019.8973451.
Duwadi, Kapil, Dos Reis, Fernando B., Mahat, Rupak, Fourney, Robert, Tonkoski, Reinaldo, Hansen, Timothy M., and Bhattarai, Bishnu P. Mon . "Numerical Oscillation Prevention for PV Inverter Controllers in Quasi-Steady-State Simulators". United States. doi:10.1109/PESGM40551.2019.8973451.
@article{osti_1603350,
title = {Numerical Oscillation Prevention for PV Inverter Controllers in Quasi-Steady-State Simulators},
author = {Duwadi, Kapil and Dos Reis, Fernando B. and Mahat, Rupak and Fourney, Robert and Tonkoski, Reinaldo and Hansen, Timothy M. and Bhattarai, Bishnu P.},
abstractNote = {Droop-based PV inverter control methods are popular for preventing overvoltage in low voltage networks with high installations of PV solar. Quasi-steady-state simulators (QSTS) can be used to reduce the computational burden of conducting long-term techno-economic analyses of such PV inverter controllers. If dynamic models for droop-based controllers are directly implemented in QSTS, numerical oscillation occurs and the controllers fail to converge to their steady-state operation. In this paper, a power network sensitivity-based algorithm is proposed for preventing numerical oscillation while implementing active and reactive droop-based PV inverter controllers in quasisteady state simulation tool (e.g. in GridLAB-D). Convergence of the sensitivity-based algorithm is verified using a typical radial distribution feeder. It is found that all three controllers reached converged state in less than 15 iterations.},
doi = {10.1109/PESGM40551.2019.8973451},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

Conference:
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