Development of HVRT and LVRT Control Strategy for PMSG-Based Wind Turbine Generators

Liang Yuan,Zhao Yang Dong,Ke Meng,Wang Zhang,Jingjie Huang,Xiaorong Xie

doi:10.3390/en13205442

Liang Yuan, Zhao Yang Dong + Show 4 more

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https://doi.org/10.3390/en13205442

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Journal: Energies	Publication Date: Oct 19, 2020
Citations: 15	License type: CC BY 4.0

Affiliation: UNSW Sydney, Tsinghua University

Abstract

Various challenges are acknowledged in practical cases with high wind power penetration. Fault ride-through (FRT) capability has become the most dominant grid integration requirements for the wind energy conversion system worldwide. The high voltage ride-through (HVRT) and low voltage ride-through (LVRT) performance play a vital role in the grid-friendly integration into the system. In this paper, a coordinated HVRT and LVRT control strategy is proposed to enhance the FRT capability of the permanent magnet synchronous generator (PMSG)-based wind turbine generators (WTG). A dual-mode chopper protection is developed to avoid DC-link overvoltage, and a deadband protection is proposed to prevent oscillations under edge voltage conditions. The proposed strategy can ride through different levels of voltage sags or swells and provide auxiliary dynamic reactive power support simultaneously. The performance of the proposed control scheme is validated through various comparison case tests in PSCAD/EMTDC.

Highlights

The renewable energy has been widely acknowledged as an essential solution to climate change and the energy crisis
To meet the increasingly stringent grid integration requirements, this paper aims to develop a coordinated control scheme for permanent magnet synchronous generator (PMSG)-based wind turbine generators (WTG) to improve the high voltage ride-through (HVRT) and low voltage ride-through (LVRT) performance
This paper proposes a coordinated Fault ride-through (FRT) control scheme for the PMSG-based WTG, which combines the dynamic reactive current injection and the dual-mode chopper protection

Summary

Introduction

The renewable energy has been widely acknowledged as an essential solution to climate change and the energy crisis. In 2019, there were 34 large-scale renewable energy projects completed, increasing Australia’s large-scale renewable power generation by 2.2 GW. The installed wind energy capacity in 2019 was 837 MW, and wind energy has overtaken hydro as Australia’s leading renewable energy source, which accounts for more than 35% of the total clean energy generation [2]. On 28 September 2016, a catastrophic blackout incident hit South Australia across the state, which is the first known blackout event in a power system with high renewable energy penetration [3,4]. It was later concluded that wind farms were to blame for the catastrophic blackout incident, and the cascading trip of wind farms triggered by extreme weather events was one of the primary causes of the incident [5].

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