使用STATCOM的并网定速风能转换系统故障穿越（FRT）控制
Fault-Ride-Through (FRT) Control of a grid-connected Fixed-Speed Wind Energy Conversion System using STATCOM
AI总结：
本文针对定速鼠笼感应发电机风能系统故障穿越能力差的问题，提出采用48脉冲三相STATCOM提供无功补偿和过电压抑制，在公共耦合点实现电压稳定与故障穿越控制。
摘要：
风能转换系统（WECS）本质上具有随机性，并且对电网电压不稳定具有低惯性、无功功率补偿能力差，最重要的是容易受到故障影响。变速WECS（如双馈感应发电机（DFIG））众所周知能够在故障发生后迅速达到稳态，而无需外部无功功率源，因为存在背靠背变流器，能够独立控制有功功率和无功功率，这与定速鼠笼式感应发电机（SCIG）不同，后者除非存在外部无功功率支持源，否则无法稳定。然而，由于完全脱网，控制DFIG复杂且成本高，而定速发电机在故障发生时不会完全脱网。因此，在这项工作中，采用一个48脉冲、三相静止同步补偿器（STATCOM）来确保SCIG的无功功率补偿和故障穿越（FRT）控制，以应对并网电力系统中故障发生引起的过电压。这里的目标是在交流电源、负载和定速WECS之间的公共耦合点（PCC）处，针对在特定时间范围内注入的故障，保证电压稳定性和故障穿越控制。
英文摘要：
Wind energy conversion system (WECS) is stochastic in nature and has low inertia to grid voltage instability, poor reactive power compensation and most importantly fault susceptibility. Variable speed WECS such as a doubly-fed induction generators (DFIG) are well known to reach steady state quickly after fault occurrence without the need for an external reactive power source because of the presence of a back-to-back converter that provides independent control of the active and reactive power unlike in the fixed-speed squirrel cage induction generator (SCIG) counterpart that cant be stabilized unless ab external source of reactive power support is present. However, controlling DFIG is complicated and costly due to complete tripping unlike the fixed-speed generators which doesnt trip completely when fault occurs. Hence, in this work, a 48-pulse, 3-phase static synchronous compensator (STATCOM) is used to ensure reactive power compensation and fault-ride through (FRT) control of the SCIG against over-voltage emanating from fault occurrence in a grid-connected power system. The goal here is to guarantee voltage stability and fault-ride through control against injected faults within certain time ranges at the point of common coupling (PCC) between the AC sources, the load, and the fixed-speed WECS.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
