Work

Modeling and control of large-scale frequency-dependent loads for local mode oscillations damping

Year: 2025

Type: article

Abstract: This paper investigates the influence of frequencydependent loads (FDLs) to damp the local mode oscillations in the large grid. The investigation focuses on FDLs connected to the secondary bus of the step-up transformer. Thereafter, a small-signal model of a synchronous generator is developed using actual plant measurements. Subsequently, a power system stabilizer is designed based on this model, taking into account nearby connected FDLs. Simulation results are presented through eigenvalues and oscillatory dynamics, and the proposed model’s effectiveness is validated on widely used IEEE 39-bus and IEEE 68-bus power systems. The study employs both frequency domain analysis and time domain simulations, under a wide range of system contingencies. In essence, the paper aims to enhance power grid stability by leveraging FDLs, providing practical insights through modeling and simulation on standard power system test cases.

Source: Franklin Open

DOI: 10.1016/j.fraope.2025.100419

Authors: Chetna Sagar, Ajit Kumar

Institution: National Institute of Technology Patna

Language: English

Topic: Power System Optimization and Stability

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,900