V/v牵引供电所混合式电能质量控制系统非对称补偿设计

针对V/v牵引供电所功率因数低、负序及谐波含量大等问题,结合有源和无源优势,提出一种由多重化背靠背双向变流器和非对称无源补偿滤波支路构成的大容量、低成本、混合式、综合补偿系统。研究了两臂无源补偿滤波支路对有源部件容量的正负效应现象,分析了系统非对称补偿原理和容量设计方法,降低了装置有源部件容量和总成本。通过对比分析工程样机投运前、后主要电能质量参数,验证了所提方法的可行性和有效性。

Asymmetric Compensation Design of Hybrid Power Quality Manage System for V/v Traction Substation

There are power quality problems in the V/v traction substation, such as poor power factor, bad harmonic pollution, and large negative sequence current, and so on. Taking advantages of active and passive compensators, this paper proposed a low-cost hybrid dynamic integrated compensation system constituted by a multiple back-to-back bidirectional converter and classical asymmetric passive compensation filters. The positive and negative effects of the passive filter on active components capacity were analyzed. The asymmetric compensation principle and capacity design method were studied. The total cost of device was reduced effectively. The comparisons of the power quality parameters were carried out before and after the proposed system is put into operation, which proves the proposed system.