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Title: Assessment of System Frequency Support Effect of PMSG-WTG Using Torque-Limit-Based Inertial Control

Abstract

To release the 'hidden inertia' of variable-speed wind turbines for temporary frequency support, a method of torque-limit based inertial control is proposed in this paper. This method aims to improve the frequency support capability considering the maximum torque restriction of a permanent magnet synchronous generator. The advantages of the proposed method are improved frequency nadir (FN) in the event of an under-frequency disturbance; and avoidance of over-deceleration and a second frequency dip during the inertial response. The system frequency response is different, with different slope values in the power-speed plane when the inertial response is performed. The proposed method is evaluated in a modified three-machine, nine-bus system. The simulation results show that there is a trade-off between the recovery time and FN, such that a gradual slope tends to improve the FN and restrict the rate of change of frequency aggressively while causing an extension of the recovery time. These results provide insight into how to properly design such kinds of inertial control strategies for practical applications.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1351872
Report Number(s):
NREL/CP-5D00-68304
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2016 IEEE Energy Conversion Congress and Exposition (ECCE), 18-22 September 2016, Milwaukee, Wisconsin
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; torque limit; inertial control; PMSG-WTG

Citation Formats

Wang, Xiao, Gao, Wenzhong, Wang, Jianhui, Wu, Ziping, Yan, Weihang, Gevorgian, Vahan, Zhang, Yingchen, Muljadi, Eduard, Kang, Moses, Hwang, Min, and Kang, Yong Cheol. Assessment of System Frequency Support Effect of PMSG-WTG Using Torque-Limit-Based Inertial Control. United States: N. p., 2017. Web. doi:10.1109/ECCE.2016.7854886.
Wang, Xiao, Gao, Wenzhong, Wang, Jianhui, Wu, Ziping, Yan, Weihang, Gevorgian, Vahan, Zhang, Yingchen, Muljadi, Eduard, Kang, Moses, Hwang, Min, & Kang, Yong Cheol. Assessment of System Frequency Support Effect of PMSG-WTG Using Torque-Limit-Based Inertial Control. United States. doi:10.1109/ECCE.2016.7854886.
Wang, Xiao, Gao, Wenzhong, Wang, Jianhui, Wu, Ziping, Yan, Weihang, Gevorgian, Vahan, Zhang, Yingchen, Muljadi, Eduard, Kang, Moses, Hwang, Min, and Kang, Yong Cheol. Thu . "Assessment of System Frequency Support Effect of PMSG-WTG Using Torque-Limit-Based Inertial Control". United States. doi:10.1109/ECCE.2016.7854886.
@article{osti_1351872,
title = {Assessment of System Frequency Support Effect of PMSG-WTG Using Torque-Limit-Based Inertial Control},
author = {Wang, Xiao and Gao, Wenzhong and Wang, Jianhui and Wu, Ziping and Yan, Weihang and Gevorgian, Vahan and Zhang, Yingchen and Muljadi, Eduard and Kang, Moses and Hwang, Min and Kang, Yong Cheol},
abstractNote = {To release the 'hidden inertia' of variable-speed wind turbines for temporary frequency support, a method of torque-limit based inertial control is proposed in this paper. This method aims to improve the frequency support capability considering the maximum torque restriction of a permanent magnet synchronous generator. The advantages of the proposed method are improved frequency nadir (FN) in the event of an under-frequency disturbance; and avoidance of over-deceleration and a second frequency dip during the inertial response. The system frequency response is different, with different slope values in the power-speed plane when the inertial response is performed. The proposed method is evaluated in a modified three-machine, nine-bus system. The simulation results show that there is a trade-off between the recovery time and FN, such that a gradual slope tends to improve the FN and restrict the rate of change of frequency aggressively while causing an extension of the recovery time. These results provide insight into how to properly design such kinds of inertial control strategies for practical applications.},
doi = {10.1109/ECCE.2016.7854886},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}

Conference:
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