Open Access

ARTICLE

Research on the Impacts of the Inertia and Droop Control Gains from a Variable-Speed Wind Turbine Generator on the Frequency Response

by Dejian Yang¹, Yien Xu¹, Tong Zhu¹, Yang Wang¹, Qiuhan Cao¹, Yuang Ma¹, Enshu Jin², Xinsong Zhang^1,*, Haochen Sun^3,*

1 School of Electrical Engineering, Nantong University, Nantong, China
2 School of Electrical Engineering, Northeast Electric Power University, Jilin, China
3 Transcell Technology, Nanjing, China

* Corresponding Authors: Xinsong Zhang. Email: ; Haochen Sun. Email:

(This article belongs to the Special Issue: Wind Energy Development and Utilization)

Energy Engineering 2022, 119(2), 539-554. https://doi.org/10.32604/ee.2022.015133

Received 24 November 2020; Accepted 12 April 2021; Issue published 24 January 2022

Abstract

System frequency must be kept very close to its nominal range to ensure the stability of an electric power grid. Excessive system frequency variations are able to result in load shedding, frequency instability, and even generator damage. With increasing wind power penetration, there is rising concern about the reduction in inertia response and primary frequency control in the electric power grid. Converter-based wind generation is capable of providing inertia response and primary frequency response; nevertheless, the primary frequency and inertia responses of wind generation are different from those of conventional synchronous fleets; it is not completely understood how the primary frequency and inertia responses affect the given system under various disturbances and available kinetic energy levels. Simulations are used to investigate the influences of inertia and droop control strategies on the dynamic frequency responses, particularly the index of the second frequency drop under various disturbance and wind conditions. A quantitative analysis provides insight into setting of inertia and droop control coefficients for various wind and disturbance conditions to facilitate adequate dynamic frequency responses during frequency events.

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Keywords

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