并联型高电能质量调节装置的研制

Development of a Shunt Type of High Power Quality Regulating Device

研制了一种具有谐波治理和无功补偿连续可调功能的并联型高电能质量调节装置,该装置主电路由晶闸管控制电抗器(thyristor controlled reactors,TCR)和谐振阻抗型混合有源滤波器(resonant impedance type hybrid active filter,RITHAF)组成。RITHAF无源部分PF(passive filters)提供固定容性无功,而TCR提供可调感性无功,二者结合相当于典型的静止无功补偿器;对于谐波治理,RITHAF起到有源滤波器的作用,由此可提高电网电能质量和功率因数。文章在分析该装置结构的基础上,推导了谐波域和基波域的模型,并对该装置运行时的控制方法进行了研究,模型推导和仿真及实验结果证明了该装置的有效性。

A shunt type of high power quality regulating device, by which both functions of harmonics suppression and continuous adjustment of reactive power compensation are implemented, is developed. The main circuit of this device consists of thyristor controlled reactors （TCR） ahd resonant impedance type hybrid active filter （RITHAF）. The passive filter of RITHAF supplies fixed capacitive reactive power and TCR supplies controllable inductive reactive power, the combination of RITHAF with TCR behaves as a typical static var compensator （SVC）. For harmonic suppression, RITHAF acts as a typical active power filter （APF）, from this both power quality and power factor can be improved. On the basis of analyzing the structure of the proposed device, the models of the system from harmonics domain and fundamental frequency domain are derived, and the control approach of the proposed device during its operation is researched in detail. The effectiveness of the shunt type of high power quality regulating device is verified by the model, simulation and experimental results.