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首页> 外文会议>IEEE International Conference on Advanced Power System Automation and Protection >Study on Operation Characteristics of Wind Power Grid-connected Doubly-Fed AC/DC Hybrid System
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Study on Operation Characteristics of Wind Power Grid-connected Doubly-Fed AC/DC Hybrid System

机译：风电双馈交直流混合系统运行特性研究

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摘要

Aiming at the impact of large-scale wind power integration on the operation characteristics of HVDC, this paper builds an AC-DC hybrid double-fed HVDC system including wind power generation. In the PSCAD/EMTDC software, the steady-state and transient operation characteristics of wind power access system are studied. The results show that the system can reach stable operation within 0.2s when the system starts. When the three-phase short-circuit ground fault occurs, the DC voltage and active power of the system show a downward trend, after the 0.05 s fault removal, active power of line gradually restores stability under the action of regulator, but line voltage appears unstable. When one end is disconnected, the voltage and active power on the fault side change to zero instantaneously, and the other end has a small reduction, and then it can resume normal operation.
机译：针对大规模风电集成对高压直流输电运行特性的影响，本文构建了包括风力发电在内的交直流混合双馈高压直流输电系统。在PSCAD / EMTDC软件中，研究了风电接入系统的稳态和瞬态运行特性。结果表明，系统启动后可在0.2s内达到稳定运行。当发生三相短路接地故障时，系统的直流电压和有功功率呈下降趋势，故障消除0.05 s后，线路的有功功率在调节器的作用下逐渐恢复稳定，但出现线路电压不稳定。当一端断开时，故障侧的电压和有功功率会立即变为零，而另一端的压降较小，则可以恢复正常运行。

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