Research on Amplitude Differential Protection Strategy of Hybrid Power Flow Controller

The article addresses the issue of congestion in transmission pathways for new energy sources and introduces a hybrid power flow controller based on the cascaded H-bridge. This controller effectively achieves precise control over the power flow of the line by continuously adjusting the phase angles...

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Bibliographic Details
Published in2024 3rd International Conference on Energy and Electrical Power Systems (ICEEPS) pp. 1383 - 1387
Main Authors Fan, Dengbo, Zhang, Qianwei, Ma, Yingxin, Hao, Zhiguo, Bai, Jinzhuo
Format Conference Proceeding
LanguageEnglish
Published IEEE 14.07.2024
Subjects
cascaded H-bridge
Circuit faults
differential protection
equal current amplitude characteristic
Equivalent circuits
Hybrid power systems
Integrated circuit modeling
Load flow
Phase-shifting transformer
Protection
Testing
Topology
Transformers
Voltage control
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Summary:The article addresses the issue of congestion in transmission pathways for new energy sources and introduces a hybrid power flow controller based on the cascaded H-bridge. This controller effectively achieves precise control over the power flow of the line by continuously adjusting the phase angles of voltage and current on both sides. Additionally, starting from the topology and equivalent circuit of the hybrid power flow controller, the characteristic of equal current amplitude during normal operation is derived, and a differential protection criterion based on amplitude is proposed. Finally, simulations of faults at different locations were conducted to verify the effectiveness of this protection strategy.
DOI:10.1109/ICEEPS62542.2024.10693237