Mechanical Stresses in Fixed-Speed Wind Turbines Due to Network Disturbances
Mechanical Stresses in Fixed-Speed Wind Turbines Due to Network Disturbances
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DOI：
10.1109/mper.2001.4311228
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发表时间：
2001-12
期刊：
影响因子：
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通讯作者：
S. Papathanassiou;M. P. Papadopoulous
中科院分区：
文献类型：
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作者：
S. Papathanassiou;M. P. Papadopoulous
电气故障和其他网络干扰会产生发电机电磁转矩的暂态，这对风力发电机（WT）机械系统造成了巨大的应力，也可能对传动系重要部件（如齿轮箱）的疲劳寿命产生不利影响。本文分析了农村中压配电系统中常见的故障和其他干扰对典型的带感应发电机的定速小波输电系统的影响。对产生的力矩瞬态进行了评估，并对其在传动系统中的传播进行了检验。根据现行IEC 61400-1标准，就WTs的设计和认证中要考虑的电气故障类型得出了重要结论。虽然重点放在开发的转矩瞬态上，但所提出的方法也适用于分析发电机中由于过电流或过电压引起的电应力。
Electrical faults and other network disturbances generate transients of the generator electromagnetic torque, which result in significant stresses for the wind turbine (WT) mechanical system and may also have a detrimental effect on the fatigue life of important drive train components, such as the gearbox. In this paper the effect of faults and other disturbances, common in rural medium voltage (MV) distribution systems, is analyzed for a typical fixed speed WT, equipped with an induction generator. The resulting torque transients are evaluated and their propagation in the drive train is examined. Important conclusions are drawn with respect to the type of electrical faults to be considered in the design and certification of WTs according to the current IEC 61400-1 Standard. Although the emphasis is placed on the developed torque transients, the methodology presented is also suitable for analyzing electrical stresses in the generator, due to over-currents or over-voltages.