Imperial College London
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ProfessorBikashPal

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Power Systems
 
 
 
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Contact

 

+44 (0)20 7594 6172b.pal Website CV

 
 
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Assistant

 

Miss Guler Eroglu +44 (0)20 7594 6170

 
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Location

 

1104Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{X:2020:10.1109/TSTE.2019.2932613,
author = {X, H and Hua, G R L and Pal, BC},
doi = {10.1109/TSTE.2019.2932613},
journal = {IEEE Transactions on Sustainable Energy},
pages = {1612--1623},
title = {Transient stability analysis and enhancement of renewable energy conversion system during LVRT},
url = {http://dx.doi.org/10.1109/TSTE.2019.2932613},
volume = {11},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Grid-connected renewable energy conversion systems (RECSs) are usually required by grid codes to possess the low voltage ride through (LVRT) and reactive power support capabilities so as to cope with grid voltage sags. During LVRT, RECS's terminal voltage becomes sensitive and changeable with its output current, which brings a great challenge for the RECS to resynchronize with the grid by means of phase-locked loops (PLLs). This paper indicates that loss of synchronism (LOS) of PLLs is responsible for the transient instability of grid-connected RECSs during LVRT, and the LOS is essentially due to the transient interaction between the PLL and the weak terminal voltage. For achieving a quantitative analysis, an equivalent swing equation model is developed to describe the transient interaction. Based on the model, the transient instability mechanism of RECSs during LVRT is clarified. Furthermore, a transient stability enhancement method is proposed to avoid the possibility of transient instability. Simulations performed on the New England 39-bus test system verify the effectiveness of the method.
AU  - X,H
AU  - Hua,G R L
AU  - Pal,BC
DO  - 10.1109/TSTE.2019.2932613
EP  - 1623
PY  - 2020///
SN  - 1949-3029
SP  - 1612
TI  - Transient stability analysis and enhancement of renewable energy conversion system during LVRT
T2  - IEEE Transactions on Sustainable Energy
UR  - http://dx.doi.org/10.1109/TSTE.2019.2932613
UR  - http://hdl.handle.net/10044/1/72445
VL  - 11
ER  -
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