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Contingency Analysis Based on Partitioned and Parallel Holomorphic Embedding.
- Source :
-
IEEE Transactions on Power Systems . Jan2022, Vol. 37 Issue 1, p565-575. 11p. - Publication Year :
- 2022
-
Abstract
- In the steady-state contingency analysis, the traditional Newton-Raphson method suffers from non-convergence issues when solving post-outage power flow problems, which hinders the integrity and accuracy of security assessment. In this paper, we propose a novel robust contingency analysis approach based on holomorphic embedding (HE). The HE-based simulator provides theoretical convergence guarantee, which is desirable because it avoids the influence of numerical issues and provides a credible security assessment conclusion. In addition, based on the multi-area characteristics of real-world power systems, a partitioned HE (PHE) method is proposed with an interface-based partitioning of HE formulation. The PHE method does not undermine the numerical robustness of HE and significantly reduces the computation burden in large-scale contingency analysis. The PHE method is further enhanced by parallel or distributed computation to become parallel PHE (P2HE). Tests on a 458-bus system, a synthetic 419-bus system and a large-scale 21 447-bus system demonstrate the advantages of the proposed methods in robustness and efficiency. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NEWTON-Raphson method
*ELECTRICAL load
*JACOBIAN matrices
*TEST systems
Subjects
Details
- Language :
- English
- ISSN :
- 08858950
- Volume :
- 37
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Systems
- Publication Type :
- Academic Journal
- Accession number :
- 154265979
- Full Text :
- https://doi.org/10.1109/TPWRS.2021.3095767