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.
|Number of pages||10|
|Journal||IEEE Transactions on Power Systems|
|Publication status||Published - 2021 May|
Bibliographical noteFunding 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@example.com,).
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.
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering