| 引用本文: | 张新闻,同向前.统一电能质量控制器容量优化设计及控制[J].电力系统保护与控制,2016,44(22):116-121.[点击复制] |
| ZHANG Xinwen,TONG Xiangqian.Capacity optimization design and control of unified power quality conditioner[J].Power System Protection and Control,2016,44(22):116-121[点击复制] |
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| 摘要: |
| 为实现统一电能质量控制器(Unified Power Quality Conditioner，UPQC) 容量在串并联单元之间的合理分配，提高UPQC补偿效率，给出了一种UPQC容量优化设计及控制方法。利用矢量图方法分析了UPQC稳态运行特性，建立了UPQC容量与电源电压暂降/骤升幅度、负载容量、负载功率因数和负载电压变化相角之间的关系模型，将其作为UPQC串并联单元容量选择的依据。根据补偿后负载电压相角可控的特点，采用神经网络对负载电压相角进行优化估计，降低UPQC实时补偿功率。仿真结果证明，所提方法能有效减小UPQC设计容量，优化动态补偿效果。 |
| 关键词: 统一电能质量控制器 电压暂降/骤升 矢量图分析 神经网络 容量优化 |
| DOI：10.7667/PSPC152081 |
| 投稿时间：2015-11-29修订日期：2016-03-04 |
| 基金项目:国家民委科研基金项目(14BFZ010);北方民族大学科研项目(2014XBZ05) |
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| Capacity optimization design and control of unified power quality conditioner |
| ZHANG Xinwen,TONG Xiangqian |
| (Beifang University of Nationality, Yinchuan 750021, China;Xi’an University of Technology, Xi''an 710048, China) |
| Abstract: |
| In order to realize the rational distribution for the reactive power between the series and parallel units of unified power quality conditioner a (UPQC) and improve its compensation efficiency, a new method that is capacity optimization and control is promoted. The steady characteristics of UPQC are analyzed by using vector diagram, and the relationship model among capacity, voltage sag/swell amplitude, load capacity, load power factor angel and variation of load voltage phase angle is established. According to the load voltage phase which is controlled after compensation, the online estimation method based on neural network is proposed, which can reduce the real-time compensation power. At last, the circuit simulation result shows that the proposed method can effectively reduce the UPQC design capacity and improve the efficiency of UPQC dynamic compensation. This work is supported by the Scientific Research Fund of State Ethnic Affairs Commission (No. 14BFZ010). |
| Key words: unified power quality conditioner voltage sag/swell vector analysis neural network capacity optimization |
