Results 51 to 60 of about 529 (183)
This work proposes a high‐fidelity, simulation‐driven control framework for robust grid integration of hybrid PV–wind systems using a modular, hierarchical multi‐loop architecture with adaptive decision logic. The framework coordinates power, DC‐link voltage, and grid currents under fast load and generation changes, enabling safe exploration of extreme
Wulfran Fendzi Mbasso +5 more
wiley +1 more source
Interconnection of VSC-HVDC and LCC-HVDC using DC–DC autotransformer
This article investigates the feasibility of interconnecting LCC-HVDC and VSC-HVDC through an un-interrupted DC autotransformer (DC AUTO). The interconnected system aims at taking advantage of two HVDC technologies.
Zhihan Yang +7 more
doaj +1 more source
Research on Voltage Regulation Methods for Flexible On‐Load Tap‐Changing Transformers
The control system determines whether the output voltage magnitude of the voltage source converter (VSC) is high, low or constant and generates the corresponding pulse signals. Each pulse is generated at the valve‐triggering instant, with its width corresponding to the commutation angle.
Weimei Zhao, Qiao Guangyao
wiley +1 more source
Review of oscillations in VSC‐HVDC systems caused by control interactions
Owing to the fast control response and distinct characteristics of the voltage source converter (VSC), various types of oscillation incidents related to the VSC‐HVDC systems have been observed around the world. However, the causes of such oscillations are complex due to the interactions among the components of the transmission system and the various ...
Congqi Yin +3 more
openaire +2 more sources
ABSTRACT To solve the complex scenarios, such as multimodal noise, bad measurement data and sudden load changes, in the power system, the enhanced generalised cross correlation entropy unscented Kalman filter (EnGCCE‐UKF) method is proposed in this paper.
Liangzheng Wu +3 more
wiley +1 more source
The rapid deployment of both line-commutated converter-based high-voltage direct current (LCC-HVDC) and voltage source converter-based high-voltage direct current (VSC-HVDC) does not only prolificate AC/DC grid coupling but also form new DC transmission ...
Yi Hao +4 more
doaj +1 more source
Aggregated control of VSC HVDC systems and offshore wind farms
This paper discusses the aggregated active power control in a Voltage Source Converter High Voltage Direct Current(VSC HVDC) system, interconnecting one offshore wind farm and two asynchronous onshore grids. Existing control strategies have all been developed for point-to-point connections and need a revision when an operation with more than two ...
Vandenbroucke, Stijn +2 more
openaire +1 more source
ABSTRACT When multiple grid‐forming and grid‐following converters operate within an offshore energy system (OES), dynamic interactions among them can lead to poorly damped oscillations and potential instability. This paper proposes a computationally efficient reduced‐order state‐space modelling framework for small‐signal stability and parametric ...
Nakul Narayanan K +3 more
wiley +1 more source
MODELING AND SIMULATION OF VSC-HVDC WITH DYNAMIC PHASORS
A novel dynamic phasors method to model voltage sources converter based HVDC (VSC-HVDC) transmission system is proposed in this paper. This approach is based on the time-varying Fourier series coefficients of the system variables, and focused on the ...
Wei YAO, Jinyu WEN, Shijie CHENG
doaj +2 more sources
Multi‐Layer MTDC Protection: Design and Simulation Assessment
This study proposes a novel multi‐layer protection architecture for multi‐terminal DC systems that separates fault current‐limiting and interruption functions. By combining a thyristor‐based fault current limiter with an active resonance circuit breaker, the scheme significantly reduces peak fault currents and di/dt stress, enabling a more compact ...
Jong‐Geon Lee +3 more
wiley +1 more source

