多馈线型低压配电网分布式谐波治理的优化控制  

Optimal Control of Distributed Harmonic Compensation in Low-Voltage Distribution Network with Multiple Feeders

作　　者：朱国锋[1] 牟龙华[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《电工技术学报》2016年第9期25-33,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51407128);中央高校基本科研业务费专项资金(0800219170)资助项目

摘　　要：针对多馈线型低压配电网的谐波治理问题,将多功能光伏逆变器作为谐波治理的基本单元,构建了一个分布式谐波治理系统。通过对电网谐波的建模与分析,合理利用多谐波源对公共连接点(PCC)谐波电压的积极影响,在计及逆变器容量限制的前提下,建立了一个复合型谐波治理目标,从而实现各馈线谐波补偿任务的优化分配。并通过Matlab/Simulink仿真分析比较了传统方法与优化方法的特点,验证了该模型和优化控制策略的有效性。与现有的谐波治理方法相比,该方法在尽量降低谐波补偿消耗的同时有效改善了PCC点电压谐波畸变,提升了系统谐波治理能效。Focusing on the issue of harmonic distortion in the low-voltage distribution network with multiple feeders,this paper buildsa distributed active filtering system with multifunctional photovoltaic inverters working as the basic units. By modeling and analyzing the harmonic resources,the positive effect of harmonic voltage on the point of common coupling（ PCC） can be utilized rationally. Under the consideration of capacity limitation of the multifunctional inverts,a multiple objectivefor harmonic suppression is developed,which canachieveanoptimized allocation of harmonic compensation for each distribution feeder. Subsequently, the characteristics of different harmonic compensation strategies are compared by Matlab / Simulink and the simulation results verify the effectiveness of the proposed strategy. Compared with existing harmonic filtering system,the proposed distributed active filtering system optimizes the effect of harmonic suppression on PCC and reduces the capacity for harmonic compensation at the same time.

关 键 词：低压配电网 分布式有源滤波 多功能逆变器 公共连接点 容量限制 

分 类 号：TM615[电气工程—电力系统及自动化]