Review of Dynamic Capacity Expansion Technology in New Power Systems

The dynamic capacity expansion technology for transmission lines is a method of increasing the capacity of transmission lines. It is a technique that monitors the real-time status of the conductor and environmental factors. Under the premise of meeting current technical standards, it uses the implicit capacity of the line to increase the transmission capacity of the transmission line. This technology can effectively improve the transmission capacity of lines without building new transmission lines, making it of great research value and engineering practical significance. However, the accuracy and reliability of the calculation results for the maximum load capacity of dynamic expansion are still affected by various factors such as the technical implementation method and calculation model, making it difficult to ensure the safe and stable operation of the power grid during the dynamic expansion process. As a result, its application in actual engineering projects in the power system is limited. This paper summarizes the existing research on the implementation method and calculation model of dynamic capacity expansion technology for transmission lines, and summarizes the key points and limitations of existing research on this technology. Finally, future research directions are proposed.