TANG Yi,ZHENG Chenyi,WANG Yu,et al.Optimization Method for Commutation Failure Prevention Control Considering AC/DC Reactive Power Interaction Characteristics[J].Automation of Electric Power Systems,2020,44(21):50-57.
TANG Yi,ZHENG Chenyi,WANG Yu,et al.Optimization Method for Commutation Failure Prevention Control Considering AC/DC Reactive Power Interaction Characteristics[J].Automation of Electric Power Systems,2020,44(21):50-57. DOI: 10.7500/AEPS20190909006.
Optimization Method for Commutation Failure Prevention Control Considering AC/DC Reactive Power Interaction Characteristics
Commutation failure prevention (CFPREV) control raises the reactive power consumption of DC system while reducing the risk of commutation failure. However
the interaction effects of reactive power between receiving grid and multiple circuits of DC system are not considered in current research. An optimization method for CFPREV control which considers interaction characteristics of AC/DC reactive power is put forward. Firstly
the law of situation evolution for AC/DC hybrid grid with the CFPREV control is analyzed
.
Secondly
power oscillation and reactive power are synthetically considered to evaluate the impact of each circuit for the DC system on the receiving-end grid
and parameter improvement of CFPREV control is set accordingly. Finally
based on the actual power grid
the proposed coordinated optimization method is simulated and analyzed. The simulation results show that the proposed method can effectively reduce the overall power oscillation of commutation failure while preventing DC system absorbing excessive reactive power
which causes adverse effects on the reactive voltage stability of AC/DC hybrid grid
and it is beneficial to the evolution of reactive voltage to the direction of restoring stability after fault.
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