低压大容量配电网无功与谐波综合补偿控制方法研究

针对目前配电网低压系统中常见的无功补偿和谐波治理装备难以兼顾无功与谐波综合动态治理的问题,结合配电网低压系统中的APF容量小以及DSTATCOM无法补偿高次谐波的现实,在多模块型并联主电路拓扑的基础上,提出了一种大容量的无功补偿和谐波治理的综合控制策略。将无功补偿和谐波治理的容量实时分解到不同频带内,通过不同的功率模块,实现动态无功调节和谐波的分频段补偿,有效提高了多模块型APF在大功率场合应用的灵活性。理论分析和仿真证明了无功和谐波分频段综合补偿的有效性和可行性。

Control Method Research of Low Voltage Large Capacity Distribution Network Reactive Compensation and Harmonic Comprehensive Compensation

For current common problem that reactive power compensation and harmonic control equipment are difficult to balance reactive and harmonic synthesis dynamic governance in distribution network low-voltage systems, combined with the fact that APF capacity is small in the distribution network low voltage system and DSTATCOM can not compensate for the high order harmonic wave, on the basis of the main paralleled circuit topology which is multi-module type, this paper presents a comprehensive control strategy of the large capacity reactive power compensation and harmonic governance. By decomposing the current time capacity of reactive power compensation and harmonic governance into different frequency bands, and by different power modules, dynamic reactive power regulation and harmonic different frequency band compensation are achieved, which effectively improve the multi-module type APF flexibility in the cases of high-power applications. Theoretical analysis and simulation results show that the feasibility and effectiveness of reactive power compensation and harmonic different frequency band comprehensive compensation.