Optimized Maintenance Planning for Transmission Power Systems

Optimized Maintenance Planning for Transmission Power Systems

Soemeer, A.R.S.

Smit, J.J. (mentor)
Djairam, D. (mentor)
Mehairjan, R.P.Y. (mentor)
Oomens, P. (mentor)

Electrical Engineering, Mathematics and Computer Science

Electrical Power Engineering

High Voltage and Management

2013-02-15

Nowadays, one of the major goals of electricity utilities is to optimize the maintenance of the assets which can be achieved by a more accurate condition indexing. The maintenance activities and maintenance planning of the grid included in this research is based on the condition indexing process. Several process steps included in the condition indexing process will be optimized in order to achieve a more accurate condition index of the components. After analyzing the current condition indexing process, the process steps which have to be optimized are investigated. These process steps contains shortcommings such as lack of guidelines, categories with ambiguous interpretations and dependancy on experience. The process steps which should be optimized are: the assessment of the visual inspection, the determination of the condition of the asset, the interpretation and subdivision of the condition levels and the determination of the time intervals for the condition indicators. A model is designed in order to minimize the subjectivity of the assessment of the visual inspections. The model includes guidelines such as questions, answers and a transformation matrix. Furthermore, a strategy is constructed for the determination of the condition of the asset by including the weighting of the condition indicator. The weighting of each condition indicator is determined based on the failure frequency, failure impact and detection chance. Afterwards, a strategy is determined for the determination of the optimal maintenance time interval. In this strategy the result and the weighting of the condition indicator are included. Finally, a case study is performed in order to analyze the new strategy for the determination of the time intervals. Based on the case study, can be analyzed if savings on the operational expenditures and a more flexible condition control can be achieved for each component.

condition indexing
health indexing
maintenance
preventive inspection
condition indicator

http://resolver.tudelft.nl/uuid:07616d7f-6e94-46c4-bc4d-16f26bce3bb1

2013-02-15

Student theses

master thesis

(c) 2013 Soemeer, A.R.S.