基于FBD法的三相电力系统电流检测方法的应用

CURRENT DETECTIONS FOR THREE-PHASE POWER SYSTEM BASED ON FBD METHOD

为了更好地进行谐波和无功功率的补偿与控制,对FBD(Fryze-Buchholz-Dpenbrock)法的定义进行了完善,并给出了补偿电流检测的直接法和间接法,在三相电力系统中对FBD间接法进行了推广研究,利用参考电压进行投影变换,不仅可以检测出功率电流和零功率电流,还可以检测出基波有功电流、基波无功电流、谐波电流以及任意次谐波电流等,大大拓展了FBD法的应用范围和领域。MATLAB仿真和实验结果表明了所定义和推广的电流检测方法的正确性和有效性。

Extended definitions of FBD methods are improved, which are convenient to compensate and control the harmonic and reactive power currents. Direct and indirect current detection methods are proposed for three-phase power system and the use of FBD method in the three-phase power system is also extended. By the projection transformation of the reference voltage, not only the power current and zero-power current, but also the active power fundamental current, reactive power fundamental current, fundamental current, any harmonic current can be detected, which extends FBD method into a wider application field. MATLAB simulations and experimental results prove the feasibility and validity of the extended definitions and proposed FBD methods.