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State estimation for distribution systems with zero-injection constraints
- Source :
- IEEE Transactions on Power Systems. Feb, 1996, Vol. 11 Issue 1, p518, 7 p.
- Publication Year :
- 1996
-
Abstract
- In this paper, a new fast decoupled state estimator with equality constraints is proposed for the three-phase distribution systems. The Lagrange multipliers were utilized to deal with the zero injections. The proposed method is based on the equivalent-current-measurement and rectangular coordinates. The method uses a compact constant-symmetric Gain matrix which can be decoupled into two 'identical' sub-Gain matrices. The update and factorization of the gain matrix needs to be done only once. Tests have shown that the proposed low-storage method is efficient, accurate and robust in solving the unbalanced three-phase distribution systems. Keywords - State Estimation, Distribution Automation System, Zero Injection, Equality Constraint, Observability Analysis.
Details
- ISSN :
- 08858950
- Volume :
- 11
- Issue :
- 1
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Power Systems
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.18548317