Work

Small-Signal Modeling of Grid-Forming Wind Turbines in Active Power and DC Voltage Control Timescale

Year: 2024

Type: article

Abstract: Grid-forming wind turbines (GFM-WTs) based on virtual synchronous control can support the voltage and frequency of power system by emulating the synchronous generator. The dynamic characteristics of a GFM-WT decided by virtual synchronous control, dq-axis voltage, and current control is significant for small-signal stability analysis. This paper builds a small-signal model of a GFM-WT in active power control (APC) and DC voltage control (DVC) timescale from the perspective of internal voltage. The proposed model describes how the magnitude and phase of the internal voltage are excited by the unbalanced active and reactive power when small disturbances occur. Interactions in different control loops can be identified by the reduced order model. We verify the accuracy of the proposed model in APC and DVC timescales by time domain simulations based on MATLAB/Simulink. Case studies show how the control parameters interact with each other in the two timescales.

Source: Electronics

DOI: 10.3390/electronics13234728

Authors: Kezheng Jiang, Xiaotong Ji, Dan Liu, Wanning Zheng, Lixing Tian, Shiwei Chen

Institutions: State Grid Hubei Electric Power Company Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd. (China), Wuhan University of Science and Technology

Language: English

Topic: Wind Turbine Control Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,728