Operational reliability in transmission power grid

The paper present the methods propose by the authors to be applying in operating of the substations. The substations take in consideration was rehabilitates by replace the existing equipments to new equipments made in the last generation. The substations take in consideration, also are change there architecture itself. The applications of this study results are apply to the high voltage substation, which take a part of the National Power Grid. New equipments exist in the rehabilitated substations which require a new approach to operate. The methods for the implementation of new equipments are issue. The architecture and the performance was compare between new equipments will present. New operational methods of high voltage substation will expound. The technical difficulty in operational power grid and there resolution is present. The rehabilitated substations require new methods to complete the operational substations tasks. The method expose are the operational reliability. The mathematic methods and new analyses methods for resolve the operational substations tasks are issue. The analysis methods take in consideration the operational reliability, the technical parameters of equipments and those variations in operation, the importance of the equipments parameters, the statistics and the reliability and the specific parameters. The behaviour of the equipments all over the operation time is analysis and was giving the solution for the future operation. The result of this research is use in the several applications. The study was applied over several type of the system architecture. The architecture of the substation and also the power grid are taken in consideration. The local examples for this application on a substation are issue. The elasticity of several type of the system architecture is analysing. In the paper is answer the questions how opportune are to make live maintenance to high voltage equipments. The results of the analysis were make over some substatio- in CN Transelectrica, the Power Grid Operator, and are present in this paper.