Wide area inter-area oscillation control system in a GB electric power system

Abstract

A wide area control system (WACS) for the Great Britain (GB) power system is presented. This WACS is designed to enhance the GB system's small signal stability, i.e. improve the damping of the inter-area oscillatory mode between Scotland and England. This study mainly consists of two parts. In the first part, the conventional concept of high-voltage direct current (HVDC) and supplementary damping control modelling is presented. The model of HVDC and supplementary damping control are tested through the classic two-area model. In the second part, the operation of the proposed WACS is demonstrated using a full model of the GB power system. In addition to the demonstration of the major applications, some key factors that will influence the operation of the wide area inter-area oscillation damping control scheme will be tested and discussed. These factors include the time delay involved in wide area data transmission and the reactions between the additional HVDC damping controller and conventional power system stabilisers.

Keywords

• power system control
• damping
• HVDC power transmission
• power system measurement
• power system stability
• power system interconnection
• oscillations
• wide area inter-area oscillation control system
• GB electric power system
• conventional power system stabilisers
• additional HVDC damping controller
• wide area data transmission
• control scheme
• wide area inter-area oscillation damping
• two-area model
• supplementary damping control
• high-voltage direct current
• inter-area oscillatory mode
• GB system
• GB power system
• WACS
• wide area control system