摘要：The amount of wind power and other time-variable non-dispatchable electricity generation israpidly increasing across the world, causing a significant change in the electrical systemconfiguration. The existing structural asset isn’t adequate to dispatch these new power that havea priority in the energy dispatching. In addiction the outage of substations on the grid and theincrease of consumptions have caused growing load currents. In order to satisfy these needs,TSOs have adopted new measures on existing power lines and N-1 criteria to ensures theelectrical grid security. These particular devices are Dynamic Thermal Rating (DTR) systems.After introducing thermal resistant conductors and DTR solutions, the paper reports differentapplications used by TERNA - Italian TSO. These systems are already installed on lines andthey are contributing to increase power flows thanks to raise by 10-30% of the real timedynamic ratings than the static evaluations. Advantages for electrical systems are many suchenergy vectors optimizations, congestions reductions, reliability increasing, cross-border powerflows increasing, smart grid development.
关键词：Dynamic thermal rating; overhead conductor; uprating of overhead line; ampacity.
