APF与TSC混合补偿装置控制策略设计  

Control strategy designing of hybrid compensator based on APF and TSC

作　　者：杨家强[1] 陈诗澜[1] 朱洁[1] 曾争[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电机与控制学报》2014年第1期11-18,共8页Electric Machines and Control

基　　金：国家自然科学基金(51177150);浙江省公益性技术应用研究计划资助项目(2011C21022)

摘　　要：针对低压配电网谐波污染以及无功功率失衡的问题,依据瞬时功率理论,设计了一种由并联型有源电力滤波器(APF)和晶闸管投切电容器(TSC)组成的动态无功与谐波混合补偿装置(TAPF)。建立了TAPF的通用数学模型,从定性和定量的角度给出了TAPF在电流源型非线性负载下采用传统控制策略的谐波消除机理。同时提出了一种既能完全补偿网侧谐波电流又能完全消除电网阻抗和TSC之间可能发生的谐振的双电流控制策略。并仿真分析了电网参数波动对传统控制策略和双电流控制策略的性能影响。仿真结果表明,在不同谐波次数和谐波补偿系数情况下,双电流控制策略比传统控制策略受电网参数波动的影响更小。因此双电流控制策略比传统控制策略更适合TAPF补偿电流源型非线性负载的谐波。In order to compensate reactive power and suppress harmonic current in the low-voltage distri- bution grid, a hybrid dynamic reactive power and harmonic current compensator （TAPF） is designed ac- cording to instantaneous power theory. It composed of shunt active power filter （APF） and thyristor- switched capacitor （TSC）. The compensation character of TAPF under traditional control strategies for current-source type nonlinear load were well studied theoretically and quantitatively by establishing math- ematic model. A double-current control strategy which not only suppress line-side harmonic current but also avoid resonance between line-side impedance and TSC was put forward. Operating performance of the compensator produced by traditional control strategies and double-current control strategy was simula- ted as power network parameters change. The simulation results validate that double-current control strat- egy is less susceptible to power network parameters changing than traditional control strategies when har- monic order and compensation factor changing. So double-current control strategy is more suitable for the compensator than traditional strategies in current-source type nonlinear load.

关 键 词：有源电力滤波器 谐波抑制 无功补偿 控制策略 电网参数 

分 类 号：TM761[电气工程—电力系统及自动化]