Power limitations of transmission systems

Information Gap Decision Theory-Based Congestion and Voltage Management in the Presence of Uncertain Wind Power

“…These problems are manifested due to the nature of the series resistance and reactance of the distribution lines. The reactance to resistance (X/R) ratio of these lines is significantly lower in contrast to their counterparts on the transmission system [8], most notably causing voltage rise with active power injections.…”

Comparison of Estimated Power Transfer in Transmission Line With and Without Shunt Compensator Using Different Line Models

“…5 depicts that without compensation, the maximum power will be transmitted at delta = 90 0 [12]. At mid-point compensation, maximum power will be transmitted at delta = 180 0 as in (1). At one-third compensation, maximum power will be transmitted at delta = 270 0 as in (5).…”

“…Generally, the transmittable power limit of a transmission line can be enhanced by employing large conductors or large voltages which is not economical with the higher cost of line. The closer the spacing of the conductor, the greater effects on the power limits [1]. However, it"s not a practical method as it leads to the interruption to the service.…”

“…The studies show that the shunt compensators at various intermediate points of transmission lines maintain steady voltages at these points and increase the power transfer capacity of the system. Also, the frequency of the supply has significant effect on the large amounts of power transmission [1].…”