Recurrence of Sub-Synchronous Oscillation Accident of Hornsea Wind Farm in UK and Its Suppression Strategy

Xiangwu Yan, Wenfei Chang, Sen Cui, Aazim Rasool, Jiaoxin Jia and Ying Sun
Additional contact information
Xiangwu Yan: Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China
Wenfei Chang: Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China
Sen Cui: Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China
Aazim Rasool: Research and Development Department, TEMSTEC (Pvt) Ltd., Wah Cantt 47040, Pakistan
Jiaoxin Jia: Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China
Ying Sun: Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China

Energies, 2021, vol. 14, issue 22, 1-13

Abstract: A large-scale power system breakdown in the United Kingdom caused blackouts in several important cities, losing about 3.2 percent of the load and affecting nearly 1 million power users on 9 August 2019. On the basis of the accident investigation report provided by the UK National Grid, the specific reasons for the sub-synchronous oscillation of Hornsea wind farm were analyzed. The Hornsea wind power system model was established by MATLAB simulation software to reproduce the accident. To solve this problem, based on the positive and negative sequence decomposition, the control strategy of grid-side converter of doubly-fed induction generator is improved to control the positive sequence voltage of the generator terminal, which can quickly recover the voltage by compensating the reactive power at the grid side. Consequently, the influence of the fault is weakened on the Hornsea wind farm system, and the sub-synchronous oscillation of the system is suppressed. The simulation results verify the effectiveness of the proposed control strategy in suppressing the sub-synchronous oscillation of weak AC wind power system after being applied to doubly-fed induction generator, which serves as a reference for studying similar problems of offshore wind power.

Keywords: sub-synchronous oscillations; Hornsea wind farm; grid-side converter; asymmetric fault; positive sequence voltage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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