Damping of Low-Frequency Oscillations in Power Systems by Large-Scale PV Farms: A Comprehensive Review of Control Methods

Mahdi Saadatmand,Hassan Haes Alhelou,Ali Moghassemi,Josep M Guerrero,Gevork B Gharehpetian,Pierluigi Siano

doi:10.1109/access.2021.3078570

Abstract

Global warming and the desire to increase the use of clean energy have led to increasing the installation and operation of renewable energy power plants (REPPs), especially large-scale photovoltaic (PV) farms (LPFs). Given that the LPFs are added to power system or replace conventional power plants, they must be able to perform the basic tasks of synchronous generators (SGs). One of these tasks is the ability to mitigate the low-frequency oscillation (LFO) risk. Also, one of the LPFs problems is reducing the power system inertia and increasing the risk of LFOs. Therefore, these types of power plants must damp the LFOs through a power oscillation damping controller (PODC), similar to the performance of power system stabilizers (PSSs) in the SGs. This paper represents an overview of the different PODCs and control methods for LFOs damping by LPF. It seems that it can be a driver for future studies. Different studies show that the application of PODCs for LPFs can play an effective role to damp the LFOs and increase the power system stability.

Highlights

Due to the challenge of global warming and increasing air pollution in the world, in recent years, much attention has been paid to the use of renewable energy resources
The large-scale photovoltaic (PV) farms (LPFs) must have the necessary characteristics for power generation in modern power systems
Damping of low-frequency oscillation (LFO) is one of the synchronous generators (SGs) tasks to maintain the power system stability, which is done by power system stabilizers (PSSs)

Summary

INTRODUCTION

Due to the challenge of global warming and increasing air pollution in the world, in recent years, much attention has been paid to the use of renewable energy resources. Studies have revealed that the earth’s surface receives approximately 1.8 × 1011 MW of power from solar radiation at each instant. This is much more than the total power consumption in the world [2]. LPFs have a different structure from conventional power plants. LPF does not have rotating mechanical components They do not have inherent inertia and can reduce the power system inertia [8]. Given the different behavior of these types of power plants than conventional power plants, many studies have been conducted on TABLE 1. Comparison between LPFs and conventional power plants.

POWER SYSTEM STABILITY

THE BASIS OF THE LPF DAMPING CONTROLLER PERFORMANCE

LPF DAMPING CONTROLLERS

SIMULATION RESULS AND COMPARISON

CONCLUSION