利用串联制动电阻提高风电场低电压穿越能力
Dianli Xitong Zidonghua/Automation of Electric Power Systems（2008）
Abstract
风电场低电压穿越能力对电力系统的稳定性有着重要影响.介绍了利用串联制动电阻在电网故障时提升风电机组端电压并吸收过剩有功功率进而提高风电场低电压穿越能力的新方法,提出了基于转速-电压动态稳定域的制动电阻投切策略,针对基于恒速风电机组的典型风电场进行了低电压穿越稳定性仿真分析.理论分析和仿真结果表明,串联制动电阻能够可观地提高风电场的低电压穿越能力,其投切策略简单有效.串联制动电阻能减轻低电压穿越对桨距控制等其他措施的依赖,可用于改进现有风电场.
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Key words
Dynamic stability margin,Fixed speed wind turbine generator,Low voltage ride-through (LVRT),Series dynamic braking resistor (SDBR),Switching scheme,Wind farm
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