NDLI: Impact of DFIG-based wind farm integration on sub-synchronous torsional interaction between HVDC and thermal generators

Content Provider	IET Digital Library
Author	Gao, Benfeng Hu, Yunting Song, Ruihua Li, Ren Zhang, Xuewei Yang, Lin Zhao, Shuqiang
Abstract	In western China, large-scale wind power is generally bundled with thermal power, and transmitted to eastern China by high-voltage direct current (HVDC) systems. This constitutes the wind–thermal bundled system transmitted by HVDC (WTBH). In this study, a typical studied system of WTBH is presented, and its models for eigenvalue analysis are introduced. To improve the efficiency of eigenvalue analysis, an improved block modelling method is proposed for building the state-space model of WTBH. By eigenvalue analysis and electromagnetic transient (EMT) simulation, the impact of doubly-fed induction generator (DFIG)-based wind farm integration on sub-synchronous torsional interaction (SSTI) between thermal generators (TGs) and HVDC was investigated. The sensitivity of the operating parameters of DFIG-based wind farms was analysed, including wind speed, wind farm scale, and distance between the wind farm and HVDC rectifier station. The obtained results show that the integration of DFIG-based wind farms can mitigate the SSTI between the TG and HVDC. The system becomes more stable as the wind speed and wind farm scale increase or the distance between the wind farm and HVDC rectifier station decreases. The conclusions of this study are validated through EMT simulations in PSCAD/EMTDC, and provide theoretical reference for practical WTBH projects.
Starting Page	3913
Ending Page	3923
Page Count	11
ISSN	17518687
Volume Number	12
e-ISSN	17518695
Issue Number	Issue 17, Sep (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/12/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.0328
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-06-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asynchronous Generator Asynchronous Machine D.C. Transmission DFIG-based Wind Farm Integration Doubly Fed Induction Generator Eigen Values And Eigen Function Eigenvalue Analysis Electromagnetic Transient Simulation EMT Simulation High-voltage Direct Current HVDC Power Transmission HVDC Rectifier Station HVDC System Improved Block Modelling Method Linear Algebra Numerical Analysis PSCAD-EMTDC Rectifying Circuit SSTI State Space Method State-Space Model Sub-synchronous Torsional Interaction Thermal Generator Thermal Power Stations Thermal Power Stations And Plant Wind Farm Scale Wind Power Plant Wind Speed Wind-thermal Bundled System WTBH System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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