Evaluación e implementación de esquemas de protección sistémicas ante contingencias críticas en el Sistema Nacional Interconectado

Abstract

The installation and commissioning of new power plants into the National Interconnected System (SNI), the incorporation of the new 500 kV transmission system, has modified the topology and operation of the Ecuadorian electrical system. For this reason, it is necessary to develop an analysis of critical contingencies and contrast those that are currently included as strategies of the System Protection Scheme (SPS), to establish whether it is necessary to update, exclude or include new strategies. In this work the contingencies of the SNI will be determined for the year 2017, by programming in PowerFactory a classification will be presented in descending order of the contingencies according to their severity, by means of the calculation of operating indexes. For those that are considered critical, studies will be develop in a stable and dynamic state to determine if they should be included in the upgrade or the creation of new strategies. Subsequently, for each contingency analyzed, the remedial actions will be presented through tables, then via linear regression the adjustment parameters of the strategies will be obtained. Finally, for the validation of the new adjustments to be considered in the SPS, through programming in PowerFactory an application will be developed that simulates the performance of the mitigation strategies of the SPS. On this way, it will be possible to check its behavior in the system before putting it into service.