Work

A novel protection scheme of wind farm access to flexible DC power grid based on high frequency measurement inductance difference

Year: 2025

Type: article

Abstract: A protection scheme for the DC transmission line of the four-terminal flexible DC grid connected to the doubly-fed wind farm based on the high-frequency measurement inductance difference is proposed. Firstly, combined with the structure of MMC flexible DC converter, considering the switching of MMC converter sub-module, the high frequency model of MMC flexible DC converter is constructed. On this basis, combined with the DC side connection mode and system topology of the four-terminal MMC-HVDC grid connected to the doubly-fed wind farm, the high-frequency equivalent network of the four-terminal MMC-HVDC grid connected to the doubly-fed wind farm is constructed, and the high-frequency measured inductance difference measured by the DC transmission line protection is calculated. The difference between the measured high-frequency measurement inductance difference area is used to construct the protection criterion. Finally, the simulation results based on RT-LAB platform verify the effectiveness and superiority of the proposed method.

Source: International Journal of Electrical Power & Energy Systems

DOI: 10.1016/j.ijepes.2025.110752

Authors: Jing Ma, Xieyu Lin, Yilin Wu, Xinlu Li, Shiyu Feng

Institutions: Shanghai University of Electric Power, North China Electric Power University

Language: English

Topic: HVDC Systems and Fault Protection

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: $3,920