no code implementations • 8 May 2024 • Sulav Ghimire, Gabriel M. G. Guerreiro, Kanakesh V. K., Emerson D. Guest, Kim H. Jensen, Guangya Yang, Xiongfei Wang
Throughout the past few years, various transmission system operators (TSOs) and research institutes have defined several functional specifications for grid-forming (GFM) converters via grid codes, white papers, and technical documents.
no code implementations • 8 Mar 2024 • Ali Arjomandi-Nezhad, Yifei Guo, Bikash C. Pal, Guangya Yang
The impact of the angle of the magnitude-saturated current on the post-fault recovery and transient stability is also investigated.
no code implementations • 22 Feb 2024 • Sulav Ghimire, Kanakesh V. Kkuni, Gabriel M. G. Guerreiro, Emerson D. Guest, Kim H. Jensen, Guangya Yang
The GFM control methods are implemented in wind turbine generators (WTGs) of a verified aggregated model of a WPP and the control interaction between these GFM WTGs is studied for several cases: cases with the same GFM control methods, and cases with different GFM control methods.
no code implementations • 15 Nov 2023 • Zimin Jiang, Peng Zhang, Yifan Zhou, Łukasz Kocewiak, Divya Kurthakoti Chandrashekhara, Marie-Lou Picherit, Zefan Tang, Kenneth B. Bowes, Guangya Yang
Synchronous condensers (SCs) play important roles in integrating wind energy into relatively weak power grids.
no code implementations • 14 Nov 2023 • Sujay Ghosh, Mohammad Kazem Bakhshizadeh, Guangya Yang, Lukasz Kocewiak
This letter determines the nonlinear stability boundary of a wind power plant (WPP) connected to an AC power grid via a long HVAC cable.
no code implementations • 10 Oct 2023 • Sulav Ghimire, Kanakesh V. Kkuni, Emerson D. Guest, Kim H. Jensen, Guangya Yang
To that end, a state-space model of the test system is developed for small-signal stability assessment and the synchronous condenser's effect on its stability.
no code implementations • 3 Oct 2023 • Sulav Ghimire, Kanakesh V Kkuni, Simon C Jakobsen, Thyge Knueppel, Kim H Jensen, Emerson Guest, Tonny W Rasmussen, Guangya Yang
The paper also provides a discussion on the prerequisites and challenges surrounding the comparative study of different GFCs.
no code implementations • 21 Jul 2023 • Sujay Ghosh, Mohammad Kazem Bakhshizadeh, Guangya Yang, Łukasz Kocewiak
However, in that work, the accuracy of the estimated TLRoA was not investigated, i. e. the TLRoA was not compared against a forward simulated region of attraction, and the sensitivity of the system parameters on the TLRoA was not explored.
no code implementations • 12 Jun 2023 • Mohammad Kazem Bakhshizadeh, Sujay Ghosh, Guangya Yang, Łukasz Kocewiak
So far, standalone time-domain simulations or analytical Lyapunov stability criteria have been used to investigate transient stability.
no code implementations • 9 Jun 2023 • Sujay Ghosh, Mohammad Kazem Bakhshizadeh, Łukasz Kocewiak, Guangya Yang
As the number of converter-based renewable generations in the power system is increasing, the inertia provided by the synchronous generators is reducing, which in turn is reducing the stability margins of the power system.
no code implementations • 4 Oct 2021 • Kanakesh Vatta Kkuni, Guangya Yang, Thyge Knueppel
However, the application of grid forming control has challenges because grid forming control applied to a power converter (GFC) has a voltage source behavior and does not stiffly control the grid side active power and thus requires a separate current limiting mechanism.
no code implementations • 25 Jun 2021 • Kanakesh Vatta Kkuni, Guangya Yang
Furthermore, a solution based on virtual active power is proposed to improve the transient stability margin of the GFC when the GFC enters the current limit.
no code implementations • 18 Jun 2021 • Kanakesh Vatta Kkuni, Sibin Mohan, Guangya Yang, Wilsun Xu
This paper studies the impact of the inner loop on the grid forming converter's ability to behave as a voltage source behind an impedance.
no code implementations • 17 May 2021 • Sen Zhan, Peng Hou, Guangya Yang
To account for wind power uncertainties, a distributionally robust chance-constrained model is developed to characterize wind power uncertainties using ambiguity sets.
