一种基于H_(∞)闭环控制器的混合式配电变压器  

A Hybrid Distribution Transformer with H_(∞) Closed Loop Controller

作　　者：高亚晨 梁得亮[1,2] 李大伟[1,2] 周堃 柳轶彬 Gao Yachen;Liang Deliang;Li Dawei;Zhou Kun;Liu Yibin(State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University,Xi’an 710049 China;Shaanxi Key Laboratory of Smart Grid Xi’an Jiaotong University,Xi’an 710049 China)

机构地区：[1]电力设备与电气绝缘国家重点实验室(西安交通大学),西安710049 [2]西安交通大学,陕西省智能电网重点实验室,西安710049

出　　处：《电工技术学报》2021年第S02期688-695,共8页Transactions of China Electrotechnical Society

基　　金：陕西省2018年重点研发计划资助项目(2018ZDCXL-GY-07-05)。

摘　　要：为提升混合式配电变压器(HDT)应对电网中发生的电压暂升/暂降以及频率波动的能力,进一步提升电能质量,建立dq0坐标系下的HDT数学模型,推导基于H_(∞)闭环的前馈/反馈(FF/FB)控制器的数学模型和传递函数,利用多变量调节理论和卡尔曼滤波器建立基于H_(∞)闭环控制理论的控制器模型,建立基于该控制器的三相HDT拓扑结构并进行原理分析,实现利用HDT解决电压暂升/暂降、谐波电流补偿、平衡负载电压、校正功率因数的功能。通过该HDT结构,可以更好地实现零稳态误差和更优的鲁棒性,进一步提高HDT提升负载侧电能质量的能力。最后通过在Matlab/Simulink平台进行仿真实验,验证了该控制器的有效性。Aiming at improving the ability of hybrid distribution transformer(HDT),and solving voltage sags/swells and frequency variations that exist in power distribution system,this paper built the mathematical model of HDT in dq0 coordinates and a controller mathematical model based on Kalman filter and multi-variable regulation H_(∞)closed loop theory,then formulated its transfer function.Then a new HDT topology based on H_(∞)FF/FB controller was established and its mechanism was analyzed.Proposed type of HDT enables not only compensate voltage when sags/swell happens in power system,but also helps realize zero steady-error,better robustness and frequency variations of load side,which makes HDT could give better performance on the improvement of power quality.Finally the effectiveness of the proposed controller was verified on Matlab/Simulink platform.

关 键 词：混合式配电变压器 电压暂升/暂降 频率波动 H_(∞)闭环控制器 电能质量 

分 类 号：TM421[电气工程—电器]