When a line flowing out of a station is lost, what will happen to other lines flowing out of that station?

When a transmission line flowing out of a station is lost, it can lead to a situation where the remaining lines must accommodate the change in flow caused by the loss of the line. The total power flow out of a station is limited by the capacity of the station itself and the conditions of the grid.

As one line is disconnected, the electrical loads and power flows will redistribute among the remaining lines. If the total generation is unchanged and the demand remains the same, the remaining lines will have a decreased share of the total flow that was previously carried by the lost line. This redistribution typically occurs to ensure stability and reliability within the system.

In some cases, if there is sufficient capacity and stability in the network, it may be possible for the remaining lines to increase their flow to compensate. However, in a situation where there are limitations or the network cannot handle increased flow safely, the most common and expected result is a decrease in the flow through the other lines as they adapt to the new circumstances within the power system. This adjustment process is crucial for maintaining the operational integrity of the grid.