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Abstract:
To solve the problem of various transform series in traditional wind power system, this paper proposes a hybrid topology of high voltage direct current (HVDC) wind power system based on multi-phase permanent magnet synchronous generator (MPPMSG). The multiple sets of the generator windings are separately connected to unipolar converters, which connect in series on the DC side and transfer into high voltage to connect the HVDC transmission line. One set of windings injects reactive power into the generator to improve the generator speed regulation and steady-state performance. In the on-shore substation, the line commutated converter (LCC) based on thyristors is applied to block the short-circuit current when the DC bus is short-circuit. In order to solve the multi-winding coupling problem, a feedback decoupling control strategy is adopted for MPPMSG. According to the analysis of short-circuit characteristics of generator, a fault ride-through strategy is proposed combined with the short-circuit current limitation method, which can deal with the short-circuit fault of DC transmission line effectively. Finally, the switching-circuit simulation model of the hybrid wind power system is built in PSCAD/EMTDC, and the effectiveness of the proposed control strategy is verified. © 2020 Automation of Electric Power Systems Press.
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Automation of Electric Power Systems
ISSN: 1000-1026
Year: 2020
Issue: 8
Volume: 44
Page: 133-140
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 5
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 15
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