Smart Transmission Network Emergency Control

TL;DR

This paper proposes a novel emergency control method for power systems that adjusts transmission line susceptance to stabilize the grid without load shedding, enhancing service continuity during crises.

Contribution

It introduces transmission susceptance adjustment as an alternative emergency control strategy, expanding the toolkit beyond traditional load shedding methods.

Findings

Transmission susceptance adjustments can stabilize power systems during emergencies.

The proposed schemes reduce the need for load shedding and service interruption.

Numerical simulations demonstrate the effectiveness of the control methods.

Abstract

Power systems normally operate at their stable operating conditions where the power supply and demand are balanced. In emergency situations, the operators proceed to cut a suitable amount of loads to rebalance the supply-demand and hopefully stabilize the system. This traditional emergency control scheme results in interrupted service with severely economic damages to customers. In order to provide seamless electricity service to customers, this paper proposes a viable alternative for traditional remedial controls of power grids by exploiting the plentiful transmission facilities. In particular, we consider two emergency control schemes involving adjustment of the susceptance of a number of selected transmission lines to drive either fault-on dynamics or post-fault dynamics, and thereby stabilize the system under emergency situations. The corresponding emergency control problems will be formulated and partly solved in some specific cases. Simple numerical simulation will be used to illustrate the concept of this paper.