Small-Signal Stability Analysis and Enhanced Control Strategy for VSC System During Weak-Grid Asymmetric Faults

Lei Guan,Jun Yao,Ruikuo Liu,Peng Sun, Siyao Gou

IEEE Transactions on Sustainable Energy（2021）

引用 8|浏览12

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摘要

Small-signal stability issues of the voltage source converters (VSC) connected weak-network during asymmetric faults is currently rarely studied. This paper develops mathematic model of VSC system during weak-grid asymmetric faults, which reveals dynamic coupling between the phase-locked loop (PLL) and both positive-sequence (PS) control system and negative-sequence (NS) control system. Based on t...

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关键词

Phase locked loops,Power system stability,Stability criteria,Power system dynamics,Voltage-source converters,Steady-state

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