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Wind power has a significant impact on the operation of power grids. As the operation is planned some hours in advance, it is necessary to forecast the wind power. Besides, wind power forecasting techniques can be adapted for the overhead line rating forecasting. This can be useful for defining advanced strategies for grid operation and improve the power integration. This paper describes several works...
One of the purposes of smart grids is the efficient delivery of sustainable, economic and secure electricity supplies. One of the strategies used for this purpose is the control and improvement of overhead lines ampacity. A smart use of the actual ampacity requires the implementation of intelligent control devices. Research on ampacity is aimed not only to calculate it in the real time, but also to...
The overhead line rating methods have a double requirement: accuracy and security. A method is accurate if the forecasted rating is close to the actual rating. It is secure if the forecasted rating is lower or equal to the actual rating. This paper compares several overhead line rating methods in terms of accuracy and security based on the results of a pilot project. Indicators for the conductor temperature...
This paper describes the line rating forecasting techniques based on NWP models. Taking the wind power forecasting as a base for the overhead line rating forecasting, the paper identifies the differences between the wind power forecasting and the overhead line rating forecasting. Recent experiences about overhead line rating forecasting are also described. As a result, the requirements for the overhead...
Real-time monitoring allows the determination of the line state and the calculation of the actual rating value. The real-time monitoring systems measure sag, conductor tension, conductor temperature, or weather-related magnitudes. In this paper, a new ampacity monitoring system for overhead lines, based on the conductor tension, the ambient temperature, the solar radiation, and the current intensity...
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