The results of many existing research have shown that the main causes of commutation failure are the commutation bus voltage amplitude drop or phase deviation
Hence, a commutation failure fault level calculation method under three-phase-to-ground faults considering multi-factor influence is proposed in this paper. Firstly, the transient
This section analyzes the commutation process of the three-phase six-pulse inverter and then analyzes the main factors affecting commutation failure. Traditional HVDC
Inverter commutation failure can also occur despite a permissible delay angle if the voltage in the three-phase system briefly dips or fails altogether. For a particular current to
The model implemented in the simulator is known as the first CIGRE benchmark model [10-11], where the three phases AC fault to ground is simulated in the inverter side of
However, only the proposed method in this paper can effectively prevent the subsequent commutation failure, which indicates that the proposed method is more effective in
Previous studies have focused on the commutation failure of inverters caused by voltage sags caused by receiving-end AC system faults. Different from the previous studies,
To measure the susceptibility of the inverter to commutation failures, the commutation failure immunity index (CFII) is proposed in [12], and simulation results showed
In AC/DC interconnected systems, the commutation failure of the DC system caused by the AC-side fault is one of the common faults of the inverter. According to the actual
Abstract. Commutation failure is one of the most common faults in the opera-tion of high voltage direct current transmission (HVDC). This paper analyzes the influence of voltage
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