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Effect of Variable Speed Wind Turbine Generator on Stability of a Weak Grid

机译:变速风力发电机对弱电网稳定性的影响

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In this paper, we illustrate the effect of adding a hypothetical 100-MW doubly fed induction generator (DFIG) wind power plant to a weak transmission system. The effects of various wind plant load factors (100, 60 and 25% of nameplate rating) are investigated. System performance is compared to a 100-MW conventional synchronous generator interconnected at the same location. The conventional generator is installed some distance away. The simulations demonstrated that DFIG generators provide a good damping performance under these conditions. These results support the conclusion that modern wind power plants, equipped with power electronics and low-voltage ride-through capability, can be interconnected to weak power grids without reducing stability. To conduct the studies, we selected an area of the Western Electricity Coordinating Council power system that is electrically far from major generation centers and is weakly connected to the bulk transmission system. The area contains large motor loads. We observed the dynamic response of large motors in the vicinity, especially their ability to ride through fault events. The studies were conducted using positive sequence phasor time-domain analysis
机译:在本文中,我们说明了将假设的100 MW双馈感应发电机(DFIG)风力发电厂添加到弱输电系统的效果。研究了各种风电厂负荷系数(铭牌额定值的100%,60%和25%)的影响。将系统性能与在相同位置互连的100 MW常规同步发电机进行比较。常规发电机安装在一定距离之外。仿真表明,DFIG发生器在这些条件下具有良好的阻尼性能。这些结果支持这样的结论,即配备有电力电子设备和低压穿越能力的现代风力发电厂可以互连到薄弱的电网,而不会降低稳定性。为了进行研究,我们选择了西部电力协调委员会电力系统的区域,该区域与主要发电中心的电气距离较远,并且与大容量输电系统的连接较弱。该区域包含较大的电机负载。我们观察到附近大型电机的动态响应,尤其是它们克服故障事件的能力。这些研究是使用正序相量时域分析进行的

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