XUE Yusheng,TAO Qi.Quantitative Analysis and Coordination Control for DC Commutation Security and Synchronism Stability of AC/DC Hybrid Power System[J].Automation of Electric Power Systems,2020,44(23):11-19.
XUE Yusheng,TAO Qi.Quantitative Analysis and Coordination Control for DC Commutation Security and Synchronism Stability of AC/DC Hybrid Power System[J].Automation of Electric Power Systems,2020,44(23):11-19. DOI: 10.7500/AEPS20200707002.
Quantitative Analysis and Coordination Control for DC Commutation Security and Synchronism Stability of AC/DC Hybrid Power System
The influence of operating conditions and fault scenarios on DC commutation security and synchronism stability is analyzed quantitatively. The idea of coordination and optimization between the equipment protection and the system protection is put forward. The quantitative index reflects the commutation security of DC systems
and the extended equal-area criterion (EEAC) margin index reflects synchronism stability of power systems. Based on these two quantitative indices
the complex correlation between the two stability is revealed. According to the performance cost ratios of the control measures for improving commutation security and synchronism stability
the control strategy is coordinated and optimized to ensure the DC commutation security and system synchronism stability with the minimum control cost. Based on the simulations of the AC/DC interconnected synchronous system and DC interconnected asynchronous system
the rationality of the commutation security margin index and the effectiveness of the coordinated optimization strategy are verified.
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