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| Author(s): |
Madeleine Rocio Medrano Castillo Albertini
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2010-09-08 |
| Examining board members: |
Joao Bosco Augusto London Junior;
Newton Geraldo Bretas;
Antonio Jose Alves Simões Costa;
Júlio César Stacchini de Souza;
Arnulfo Barroso de Vasconcellos
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| Advisor: | Joao Bosco Augusto London Junior; Newton Geraldo Bretas |
| Abstract | |
A practical and efficient off-line approach to detect, identify and correct series and shunt branch parameter errors is proposed in this thesis. The branches suspected of having parameter errors are identified by means of the Suspicious Index (SI). The SI of a branch is the ratio between the number of measurements incident to that branch, whose normalized residuals are larger than one specified threshold value, and the total number of measurements incident to that branch. Using several measurement snapshots, the suspicious parameters are sequentially estimated, via an augmented state and parameter estimator which increases the V-\'teta\' state vector for the inclusion of suspicious parameters. Several simulation results (with IEEE 14, 30 and 57 bus systems) have demonstrated the high accuracy and reliability of the proposed approach to de al with single and multiple parameter errors in adjacent and non-adjacent branches, as well as in parallel transmission lines with series compensation. The proposed approach is confirmed by tests performed in two subsystems of the Hydro-Québec Trans-Énergie. (AU) | |