Harmonics propagation and interaction evaluation in small-scale wind farms and hydroelectric generating systems

Ziwen Zhao; Md Apel Mahmud; Pietro Elia Campana; Branislav Hredzak; Jie Luo; Diyi Chen; Beibei Xu

doi:10.1016/j.isatra.2022.02.050

Harmonics propagation and interaction evaluation in small-scale wind farms and hydroelectric generating systems

ISA Trans. 2022 Oct;129(Pt B):334-344. doi: 10.1016/j.isatra.2022.02.050. Epub 2022 Mar 4.

Authors

Ziwen Zhao¹, Md Apel Mahmud², Pietro Elia Campana³, Branislav Hredzak⁴, Jie Luo¹, Diyi Chen¹, Beibei Xu⁵

Affiliations

¹ Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China.
² Electrical Power and Energy Systems Research Lab, School of Engineering, Deakin University, Geelong, VIC 3216, Australia.
³ School of Sustainable Development of Society and Technology, Mälardalen University, SE 72123, Vasteras, Sweden.
⁴ School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney 2052, NSW, Australia.
⁵ Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China; State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an, 710048, Shaanxi, PR China; Xi'an University of Technology, Xi'an, 710048, Shaanxi, PR China. Electronic address: xubeibei0413@163.com.

PMID: 35331550
DOI: 10.1016/j.isatra.2022.02.050

Abstract

The harmonics exacerbated by the integration of distributed energy such as wind power has been extensively studied. However, the interaction and propagation mechanism between harmonic sources in the hydro-wind complementary generation system are still not clear. To tackle this challenge, the presented study establishes the hydro-wind complementary generation system model and explores the harmonics propagation and interaction in all components. Then three operation mode of complementary system (scenario 1: stand-alone Hydroelectric Generating System, scenario 2: stand-alone Wind Farm (WF) and scenario 3: complementary generation system) are selected. The results demonstrate that the integration of HGS diminishes the harmonic at DFIG side but at the grid side. In complementary generation system, the THD_u rises but the corresponding THD_i declines due to the regulation of power grid. Furthermore, the odd harmonics interactions analysis reveal that the doubly-fed induction generator's (DFIG) side and the stator's side are the two high-risk sources in the complementary generation process. The presented results provide a basis for power quality evaluation of hydro-wind complementary generation system.

Keywords: Complementation and stand-alone; Harmonic propagation; Hydro-wind complementary generation system; Interaction performances.