Transmission supporting energy storage batteries are key supporting equipment for power transmission and transformation projects, focusing on solving the bottleneck problems of power transmission congestion, insufficient transmission capacity and unbalanced power distribution in the power transmission link. As an important part of the power grid transmission and distribution system, they are deployed in key nodes of transmission lines, substations and transmission channel terminals, cooperating with transmission and transformation equipment to optimize the power transmission efficiency of the whole grid and improve the utilization rate of transmission line resources.

The core application scenario of transmission supporting energy storage batteries is to relieve transmission line congestion. In some regional power grids, due to the limitation of transmission line capacity, the electric energy generated by upstream new energy and thermal power units cannot be transmitted to the load center in real time, resulting in power waste and grid operation risks. The energy storage batteries can store the excess electric energy that cannot be transmitted in time during the peak power transmission period, and release the electric energy for transmission when the line load is low, effectively breaking through the transmission capacity limit of existing lines and avoiding the repeated construction of transmission infrastructure.

In addition, these batteries can stabilize the transient state of the transmission system and improve the safety and stability level of long-distance power transmission. During the operation of transmission lines, sudden load changes and line faults are easy to cause power oscillation and voltage fluctuation. The fast charging and discharging characteristics of energy storage batteries can quickly buffer power fluctuations, suppress grid oscillation, and ensure the safe and reliable operation of long-distance and large-capacity power transmission. With the continuous construction of new power systems, transmission supporting energy storage batteries are developing towards high voltage, large capacity and grid integration, providing strong technical support for the efficient operation and optimal scheduling of cross-regional power transmission networks.