Transient Overvoltage Analysis and Suppression Control for Hydro-Photovoltaic Transmission System with Grid-Forming VSC-HVDC

Transmission of large-scale new energy power to load centers via voltage source convert (VSC) based high voltage direct current (HVDC) is a crucial technical solution for exporting power from renewable energy base in regions such as deserts, Gobi and desert areas. However, when an alternating curren...

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Bibliographic Details
Published in2024 3rd International Conference on Energy and Electrical Power Systems (ICEEPS) pp. 259 - 263
Main Authors Gong, Hancheng, Guan, Lin, Zhou, Baorong, Zhang, Ye, Tang, Wangqianyun
Format Conference Proceeding
LanguageEnglish
Published IEEE 14.07.2024
Subjects
Grid forming
grid-forming control
HVDC transmission
Power system stability
Process control
Reactive power control
Renewable energy sources
Stability analysis
Surges
Transient analysis
transient overvoltage
Voltage control
VSC-HVDC
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Summary:Transmission of large-scale new energy power to load centers via voltage source convert (VSC) based high voltage direct current (HVDC) is a crucial technical solution for exporting power from renewable energy base in regions such as deserts, Gobi and desert areas. However, when an alternating current (AC) short-circuit fault occurs in the sending system, a large amount of power surplus will be generated at the sending end due to the factors such as weak local power grid and the limitation of HVDC equipment, resulting in serious transient overvoltage. This paper studies the transient voltage characteristics of the Hydro-PV bundled transmission system through grid-forming VSC-HVDC. Then a transient coordination control strategy is designed for the new energy station and the VSC-HVDC to control the transient overvoltage level after AC short-circuit fault. By improving the fault ride-through control of new energy stations and converter stations, the transient voltage characteristics of the sending-end system are optimized. Effectiveness of the proposed control strategy is verified through simulations on the PSCAD/EMTDC platform.
DOI:10.1109/ICEEPS62542.2024.10693267