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中文摘要：
随着西北网750kV主网的建成及新疆“风火打捆”直流外送的实施，新疆电网已形成了交直流混联的系统。为了分析直流系统对大规模风电场交流系统的影响，针对大规模直驱风电场与火力发电厂打捆并网后直流外送的输电方案，构建了含交直流系统的网络拓扑结构，建立了大规模直驱风电场及直流输电系统的数学模型。基于PSCAD／EMTDC软件，仿真并分析了：直流系统对含大规模风电场的交流系统的影响，以及直流系统不同的控制方式、不同的无功补偿容量、直流故障、交直流比例对交流系统及风电场稳定性的影响。
英文摘要：
With the Northwest 750kV grid built and Xinjiang ＂Bundled Wind ＆ Fire＂ DC transmission implement, Xinjiang Power Grid has formed a AC/DC system. In order to analyze that D-PMSG wind farm connecting grid and exporting by HVDC on the impact of AC/DC system, aim to the transmission program that trans- port the power after the large D-PMSG wind farm connect to grid, construct the network topology of the sys- tem, establish the mathematical model of the Large-scale D-PMSG wind farm and HVDC system. Based on PSCAD/ EMTDC, simulate and analysis： DC system influence on communication system containing large- scale wind farms, and different control mode, different dc system reactive power compensation capacity, dc fault, proportion of ac/dc to ac system, and the effect on the stability of the wind farm.
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