Benefits of Dynamic Line Rating on System Operation

Abstract

This paper explores the benefits that ampacity dynamic line ratings (DLR) can offer to obtain a higher penetration of wind power generation in the grid. This paper presents an analysis of real examples where monitoring systems are achieving real benefits when operating the network. Monitoring systems not only provide economic benefits, but can also provide information for ampacity predictions. These predictions can help to plan the dispatch of energy in the electricity market, always taking into account the risk that such predictions may not be fulfilled. The case studies demonstrate the economic benefits and increased wind generation on the grid from the use of DLR on a 24-bus network. It is analyzed which line would obtain a greater benefit from the installation of the DLR, and considering the market prices of the fuel, the economic differences are analyzed by using static ampacity limits and using the dynamic limits obtained based on ampacity predictions.