Understanding and evaluating systemwide impacts of uncertain parameters in the dynamic load model on short-term voltage stability

Jae Kyeong Kim; Byongjun Lee; Jin Ma; Gregor Verbic; Suchul Nam; Kyeon Hur Nam

doi:10.1109/TPWRS.2020.3027692

Understanding and evaluating systemwide impacts of uncertain parameters in the dynamic load model on short-term voltage stability

Jae Kyeong Kim, Byongjun Lee, Jin Ma, Gregor Verbic, Suchul Nam, Kyeon Hur Nam

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

This paper investigates systemwide short-term voltage stability concerns of power systems due to the multiple parametric uncertainties in the dynamic load model. The impact of regional load model uncertainty can be widespread and may mislead the whole system analysis and subsequent measures, if not properly addressed. This research discloses that the systemwide impact is related to the voltage weak areas through voltage stability modal analysis, and suggests that the impact of uncertain parameters needs to be assessed from a systems perspective, which has rarely been done in the existing practices. We thus present a three-step methodology for evaluating the systemwide uncertainty impacts: Firstly, it screens possible trajectories of all buses. The second step verifies whether the screened trajectories comply with the defined criteria, and determines the necessity of the final step. The final detailed analysis is conducted for those selected scenarios. Comprehensive studies for both the IEEE test and real Korea power systems consistently confirm the observations and demonstrate the efficacy and validity of the proposed method.

Original language	English
Article number	9209134
Pages (from-to)	2093-2102
Number of pages	10
Journal	IEEE Transactions on Power Systems
Volume	36
Issue number	3
DOIs	https://doi.org/10.1109/TPWRS.2020.3027692
Publication status	Published - 2021 May

Bibliographical note

Funding Information:
Manuscript received March 21, 2020; revised August 8, 2020; accepted September 19, 2020. Date of publication September 29, 2020; date of current version April 19, 2021. This work was supported in part by Korea Electric Power Corporation under Grant R17XA05-4, and in part by “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation, and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry, and Energy, Republic of Korea under Grant 20194030202420. Paper no. TPWRS-00442-2020. (Corresponding author: Kyeon Hur.) Jae-Kyeong Kim is with the Advanced Power Grid Research Center, Korea Electrotechnology Research Institute, Uiwang 16029, Korea (e-mail: [email protected],).

Funding Information:
This work was supported in part by Korea Electric Power Corporation under Grant R17XA05-4, and in part by "Human Resources Program in Energy Technology" of the Korea Institute of Energy Technology Evaluation, and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry, andEnergy, Republic ofKorea underGrant 20194030202420. Paper no. TPWRS-00442-2020.

Publisher Copyright:
© 1969-2012 IEEE.

Keywords

Dynamic load model
Modal analysis
Parametric uncertainty
Short-term voltage stability
Trajectory sensitivity

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/TPWRS.2020.3027692

Cite this

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title = "Understanding and evaluating systemwide impacts of uncertain parameters in the dynamic load model on short-term voltage stability",

abstract = "This paper investigates systemwide short-term voltage stability concerns of power systems due to the multiple parametric uncertainties in the dynamic load model. The impact of regional load model uncertainty can be widespread and may mislead the whole system analysis and subsequent measures, if not properly addressed. This research discloses that the systemwide impact is related to the voltage weak areas through voltage stability modal analysis, and suggests that the impact of uncertain parameters needs to be assessed from a systems perspective, which has rarely been done in the existing practices. We thus present a three-step methodology for evaluating the systemwide uncertainty impacts: Firstly, it screens possible trajectories of all buses. The second step verifies whether the screened trajectories comply with the defined criteria, and determines the necessity of the final step. The final detailed analysis is conducted for those selected scenarios. Comprehensive studies for both the IEEE test and real Korea power systems consistently confirm the observations and demonstrate the efficacy and validity of the proposed method.",

keywords = "Dynamic load model, Modal analysis, Parametric uncertainty, Short-term voltage stability, Trajectory sensitivity",

author = "Kim, {Jae Kyeong} and Byongjun Lee and Jin Ma and Gregor Verbic and Suchul Nam and Nam, {Kyeon Hur}",

note = "Funding Information: Manuscript received March 21, 2020; revised August 8, 2020; accepted September 19, 2020. Date of publication September 29, 2020; date of current version April 19, 2021. This work was supported in part by Korea Electric Power Corporation under Grant R17XA05-4, and in part by “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation, and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry, and Energy, Republic of Korea under Grant 20194030202420. Paper no. TPWRS-00442-2020. (Corresponding author: Kyeon Hur.) Jae-Kyeong Kim is with the Advanced Power Grid Research Center, Korea Electrotechnology Research Institute, Uiwang 16029, Korea (e-mail: [email protected],). Funding Information: This work was supported in part by Korea Electric Power Corporation under Grant R17XA05-4, and in part by {"}Human Resources Program in Energy Technology{"} of the Korea Institute of Energy Technology Evaluation, and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry, andEnergy, Republic ofKorea underGrant 20194030202420. Paper no. TPWRS-00442-2020. Publisher Copyright: {\textcopyright} 1969-2012 IEEE.",

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AU - Nam, Kyeon Hur

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AB - This paper investigates systemwide short-term voltage stability concerns of power systems due to the multiple parametric uncertainties in the dynamic load model. The impact of regional load model uncertainty can be widespread and may mislead the whole system analysis and subsequent measures, if not properly addressed. This research discloses that the systemwide impact is related to the voltage weak areas through voltage stability modal analysis, and suggests that the impact of uncertain parameters needs to be assessed from a systems perspective, which has rarely been done in the existing practices. We thus present a three-step methodology for evaluating the systemwide uncertainty impacts: Firstly, it screens possible trajectories of all buses. The second step verifies whether the screened trajectories comply with the defined criteria, and determines the necessity of the final step. The final detailed analysis is conducted for those selected scenarios. Comprehensive studies for both the IEEE test and real Korea power systems consistently confirm the observations and demonstrate the efficacy and validity of the proposed method.

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Understanding and evaluating systemwide impacts of uncertain parameters in the dynamic load model on short-term voltage stability

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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