A state-of-the-art review on concurrent voltage and frequency regulation problems in renewable integrated power networks
Vineet Kumar, Veena Sharma, Ananya Kumar, Yogendra Arya, Srinivas Chikkam
Abstract
The growing demand for electricity has intensified the shift toward renewable energy sources like wind and solar, which are environmentally friendly due to their zero carbon emissions. However, their intermittent nature poses significant challenges to grid security, reliability, and stability. An effort is made in this paper to present a comprehensive review of the critical issue of concurrent voltage and frequency regulation in renewable-integrated power systems. It provides an overview of these regulation challenges and focuses on the combined control strategies across different system configurations involving renewable sources and energy storage devices. The paper also details the modeling configuration of essential components within voltage and frequency control loops. Additionally, case studies are presented to evaluate the performance and limitations of recent controller structures. A critical literature survey and a latest and thorough bibliography is presented on the topic. Furthermore, the challenges, opportunities, and future research directions in collective voltage and frequency regulation are discussed in detail.