基于多变量解耦控制的配电网单相接地故障集成化柔性消弧方法  

Integrated flexible arc suppression method based on multi-variable decoupling control for single-phase grounding fault in distribution network

作　　者：郭谋发[1] 郭彩虹 郑泽胤 GUO Moufa;GUO Caihong;ZHENG Zeyin(School of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学电气工程与自动化学院,福建福州350116

出　　处：《电力自动化设备》2021年第11期133-139,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51677030)。

摘　　要：随着静止无功补偿装置、柔性消弧装置、大功率逆变器等电力电子装备应用逐渐增多,配电网柔性化加快发展,但已有电力电子装备存在功能单一、成本高等问题。基于直流侧并接储能元件的直挂式级联H桥变流器,将多变量解耦控制方法与电流消弧方法相结合,实现柔性电力电子装备输出电流在dq0坐标系下的独立调节,使单套柔性电力电子装备同时集成配电网有功功率、无功功率双向流动控制,以及单相接地故障柔性消弧功能,有效提高电力电子装备的利用效率。理论分析以及功率控制和单相接地故障消弧建模仿真结果验证了所提方法的可行性。With the increasing application of power electronic equipments such as static reactive power compensation devices,flexible arc suppression devices and high-power inverters,the development of flexible distribution network has been accelerated.However,the existing power electronic equipments have problems such as single function and high cost.Based on the direct-connected cascaded H-bridge converter connected in parallel with the energy storage element at DC side,and combining the multi-variable decoupling control method with current arc suppression method,the output current of the flexible power electronic equipment can be independently adjusted in the dq0 coordinate system.Thereby,a single set of flexible power electronic equipment can be integrated with bidirectional active and reactive power flow control of the distribution network,and flexible arc suppression of single-phase grounding fault,which will effectively improve the utilization efficiency of power electronic equipments.Theoretical analysis and simulative results of power control and single-phase grounding fault arc suppression modeling verify the feasibility of the proposed method.

关 键 词：配电网 单相接地故障 集成化柔性消弧方法 多变量解耦控制 电流消弧法 有功功率 无功功率 

分 类 号：TM713[电气工程—电力系统及自动化]