电网扰动模拟发生装置与风电机组串联引发振荡的机理及抑制措施  

Mechanism of Oscillation Caused by Grid Adaptive Device Series-connected With Wind Turbines and Suppression Methods

作　　者：刘京波[1] 吴宇辉[1] 柳玉[1] 崔阳[1] 杜军[1] 

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045

出　　处：《华北电力技术》2017年第7期47-52,共6页North China Electric Power

摘　　要：电网扰动模拟发生装置通常采用全功率变流器,能够在风电机组输出侧模拟电网频率、电压和谐波的变化。装置输出端和风电机组输出端都配置LC滤波电路,在带载测试过程中,风电机组与电网扰动模拟发生装置间发生了低频次和高频次的功率振荡,导致风机脱网。针对工程应用过程中的振荡现象,阐释了功率振荡的产生机理,初步提出了功率振荡的抑制措施,对装置的控制策略进行了优化,最后通过实测验证了抑制措施的效果。Grid disturbance simulation generator usually adopts full power converter can simulate at the wind genera- tor output side the change of the power grid frequency, voltage and harmonics. Both device output and wind turbine output are configured with LC filter circuit,in the process of loading test,wind turbines and the disturbance simula- tion device happened power oscillation at low frequency and high frequency,led to tripping. Based on the oscillation phenomenon in engineering application, the mechanism of power oscillation is illustrated, the suppression measures are put forward,the device control strategy is optimized,finally the effect of the inhibition measures is verified.

关 键 词：电网扰动模拟发生装置 功率振荡 LC滤波回路 抑制措施 

分 类 号：TM614[电气工程—电力系统及自动化] TM712