Integration of Wind Power Plants for Power System Frequency Stability Improvement

Abstract

The integration of wind power plants (WPPs) into modern power systems presents both opportunities and challenges, particularly in ensuring power system stability and frequency stability. This chapter explores the methodologies, technologies, and challenges associated with leveraging WPPs to enhance power system frequency stability. It begins with an overview of the operational characteristics of WPPs and their impact on power system dynamics. Mathematical models and simulation techniques, focusing on the IEEE 9-bus network as a case study, are discussed to illustrate the dynamics and control strategies necessary for effective integration. This study focused on developing a supplementary control loop (secondary control scheme) to enable WPPs’ participation in frequency regulation. The efficacy of the developed control scheme was evaluated to assess the contribution of the WPPs to frequency regulation. DIgSILENT software was used to model the IEEE 9-bus network and evaluate the control scheme performance. The chapter also presents detailed case studies involving load demand increases and generation loss scenarios to demonstrate the practical application and effectiveness of the proposed technique. The results showed that WPPs can participate in secondary frequency control, and this will limit the reliance on fossil fuel-based conventional generators for ancillary reservices.