储能型功率补偿系统的无功功率与动态有功功率解耦控制  

Decouple Control Strategy of Dynamic Active Power and Reactive Power for Storage Energy-type Power Compensation System

作　　者：李伟[1,2] 吴凤江[1] 段建东[1] 孙力[1] 

机构地区：[1]哈尔滨工业大学电气工程系,哈尔滨150001 [2]黑龙江科技大学电气工程系,哈尔滨150027

出　　处：《高电压技术》2015年第7期2165-2172,共8页High Voltage Engineering

基　　金：国家自然科学基金(51107018)~~

摘　　要：为降低柴油发电机组的暂态电压与频率波动,并优化其工作效率,以同步旋转坐标系下的发电机数学模型为基础获得了其输出电压和转速的阶跃响应表达式,证明只对其进行无功补偿难以解决输出电压及转速的动态跌落问题。在此基础上提出储能型功率补偿系统与柴油发电机组相并联的联合供电方案,由储能型功率补偿系统提供无功功率和负载动态变化过程的有功功率从而提高系统的动态电能质量。提出了包括无功功率和动态有功功率参考值的产生方法、有功和无功电流闭环解耦控制策略的总体控制方案,给出了相应的仿真和实验结果,结果表明,加入储能型功率补偿系统后,柴油发电机组的功率因数接近1,不输出无功功率,带动阶跃负载时,其输出电压有效值动态跌落远小于5%,动态电能质量得到显著提高。To reduce the transient output voltage and frequency ripples and to increase the efficiency of diesel generator （DG）, we derived a transient expression for the output voltage and rotating speed based on the model of generator. It is proved that only compensating the load reactive power cannot solve the dynamic drop of output voltage of DG. Based on the theoretical analysis results, a power scheme combining the power compensation system with energy storage link with DG is proposed. The reactive power of the load is provided by the compensation system while the dynamic performance is enhanced by providing temporary dynamic active power. The total control scheme, including the generation of dynamic active and reactive power references and the close-loop control strategy of active and reactive currents is proposed. Detail simulation and experimental results are obtained.The results indicate that, in the presence of the power compensation system with energy storage link, the power factor of DG is close to 1 and hardly outputs reactive power; when the DG drives dynamic step load, the dynamic drop of the RMS value of output voltage is far lower than 5%, as a result, the dynamic power quality is further enhanced.

关 键 词：柴油发电机组 动态电能质量 无功功率 储能型功率补偿 解耦控制 动态有功功率补偿 

分 类 号：TM761[电气工程—电力系统及自动化] TM314