Operational resilience metrics for power systems with penetration of renewable resources

Abstract

Modern power grid is evolving towards carbon neutrality by deploying increasing amount of renewable energy resources. However, the impact of renewable generation on power system planning and operation is not sufficiently investigated, especially the capability of renewable penetrated power systems to resist and recover from major disturbances, which is a critical concern for system operators. Novel metrics and evaluation methodologies are needed to depict systems’ ability in response to events caused by natural disasters, and quantitatively evaluate system performance in various time scales. In this paper, operational resilience metrics are proposed for power systems with penetration of renewable energy resources based on transient stability principles. A systematic methodology is proposed to quantitatively assess the evolution of system performance during various stages of the disaster process. Based on the proposed metrics, a resilience‐oriented disaster management strategy is designed and validated using the modified IEEE 39‐bus test system. The simulation results demonstrate the validity of the proposed metrics and strategy, and show that the system resilience is enhanced during the mitigation of fault conditions.

A hierarchical coordinated control strategy of air‐conditioning loads for peak regulation service

“…Given the issues identified in existing research, this paper proposes a hierarchical coordinated control strategy for AC loads for peak regulation. The main contributions are listed as follows: (1) The proposed strategy employs a uniform temperature adjustment to change the power of FFAC and IAC loads. (2) In the first layer of the proposed strategy, the LA coordinates the response start times and the pre-adjustment temperatures of multiple air-conditioning groups, where the DSO's power curve requirements are used as a constraint in the integer planning.…”

“…The increasing penetration of high‐proportion renewable energy sources and the widening valley‐peak difference have posed a challenge to peak regulation in power systems [1, 2]. Large conventional generator units mainly provide peak regulation services in power systems, especially thermal units [3].…”

Fully Distributed Economic Dispatch with Random Wind Power Using Parallel and Finite-Step Consensus-Based ADMM

“…Recently, the integration of renewable energy generators into power systems has emerged as a strategic response to energy and environmental challenges [25][26][27][28]. Among the various types of renewable energy sources, wind turbines (WTs) have gained prominence due to the abundant availability and eco-friendly nature of wind energy, coupled with the advanced maturity of turbine technologies.…”