无变压器型统一电能质量调节器多工况电能质量综合治理技术  

Comprehensive Power Quality Management for TransformerlessUnified Power Quality Conditioner UnderMultiple Operating Conditions

作　　者：傅哲 张琦 刘杨 万伯豪 王婷 孙艳飞 FU Zhe;ZHANG Qi;LIU Yang;WAN Bohao;WANG Ting;SUN Yanfei(State Grid Beijing Urban District Power Supply Company,Beijing 100034,China;State Grid Beijing Fengtai Power Supply Company,Beijing 100073,China)

机构地区：[1]国网北京城区供电公司,北京100034 [2]国网北京丰台供电公司,北京100073

出　　处：《上海交通大学学报》2025年第2期252-265,共14页Journal of Shanghai Jiaotong University

基　　金：国网北京市电力公司科技项目(520202230006)资助项目。

摘　　要：针对由电力电子负荷所导致的配电网电能质量问题,提出一种基于两桥臂拓扑的无变压器型统一电能质量调节器(TLTT-UPQC),在克服现有统一电能质量调节器(UPQC)中工频变压器体积、质量与磁饱和缺陷的基础上,能以轻量化、高灵活性形式实现对配电网电能质量的改善,满足负荷高质量用电需求.首先,从电路拓扑角度分析TLTT-UPQC的工作原理;其次,结合理论分析研究电网电压跌落、升高、畸变及阻感性、非线性负荷等工况场景下多种电能质量治理功能的运行机理,并以此为依据设计系统的控制策略;最后,搭建基于MATLAB的系统仿真模型,并通过仿真结果验证TLTT-UPQC的多功能运行性能.To address the power quality problems caused by power electronic loads,a two-leg topology-based transformerless unified power quality conditioner(TLTT-UPQC)is proposed,which can overcome the volume,weight,and magnetic saturation of power frequency transformer in the existing UPQCs,and can improve the power quality of the distribution network in a lightweight and highly flexible form to meet the high-quality electricity demand of loads.First,the working principle of TLTT-UPQC is analyzed from the perspective of circuit topology.Then,combined with theoretical analysis,the operating mechanisms of various power quality management functions are studied in scenarios such as grid voltage drop,rise and distortion,as well as resistor-inductance and nonlinear loads,based on which,the system control strategy is designed.Finally,a MATLAB-based simulation model is developed to verify the multifunctional operation performances of the TLTT-UPQC through simulation results.

关 键 词：电能质量 无变压器型统一电能质量调节器 两桥臂变换器 功率流 多工况 

分 类 号：TM727[电气工程—电力系统及自动化]