| 引用本文: | 王秀云,高硕,裴忠晨,刘闯,李瑞峰,杨卫平.基于模型预测控制的高频隔离型混合配电变压器[J].电力自动化设备,2024,44(1):57-63,87. |
| WANG Xiuyun,GAO Shuo,PEI Zhongchen,LIU Chuang,LI Ruifeng,YANG Weiping.High frequency isolated hybrid distribution transformer based on model predictive control[J].Electric Power Automation Equipment,2024,44(1):57-63,87. |
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| 摘要: |
| 配电台区新型源/荷占比逐年提升，使得高/低电压、谐波放大、三相不平衡等配电终端电能质量问题凸显。提出一种基于模型预测控制的高频隔离型混合配电变压器，具备电能质量综合治理、交/直流混合配电等功能，可以满足配电终端用户高品质供用电以及新型源/荷友好接入需求。介绍了高频隔离型混合配电变压器的拓扑结构并推导了数学模型。结合拓扑结构特点，设计了连续控制集模型预测控制(CCS-MPC)策略和延时模型预测控制策略，CCS-MPC通过计算最优化占空比，实现前端变换器输出具有固定的开关频率和开关序列，减小寻优计算量。利用MATLAB/Simulink仿真软件搭建了一套10 kV/0.4 kV电压等级的高频隔离型混合配电变压器系统，验证了所提拓扑结构电能质量综合治理能力的有效性。 |
| 关键词: 配电台区 高频隔离型混合配电变压器 模型预测控制 最优占空比 电能质量综合治理 |
| DOI：10.16081/j.epae.202301016 |
| 分类号:TM421 |
| 基金项目:国家自然科学基金资助项目(51877035) |
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| High frequency isolated hybrid distribution transformer based on model predictive control |
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WANG Xiuyun, GAO Shuo, PEI Zhongchen, LIU Chuang, LI Ruifeng, YANG Weiping
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School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
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| Abstract: |
| The proportion of new source/load in the distribution area is increasing year by year, which makes the power quality problems of the distribution terminal, such as high/low voltage, harmonic amplification and three-phase imbalance, become prominent. A high frequency isolated hybrid distribution transformer based on model predictive control is proposed, which has the functions of comprehensive power quality management, AC/DC hybrid distribution, etc.,and can meet the requirements of high-quality power supply and new source/load friendly access of distribution terminal users. The topology of high frequency isolated hybrid distribution transformer is introduced and the mathematical model is deduced. Combined with the characteristics of the topology, a continuous control set model predictive control(CCS-MPC) strategy and a delay model predictive control strategy are designed. By calculating the optimal duty cycle, CCS-MPC realizes that the output of the front-end converter has a fixed switching frequency and switching sequence, which reduces the amount of optimization calculation. A set of high-frequency isolated hybrid distribution transformer system with the voltage level of 10 kV/0.4 kV is built by using MATLAB/Simulink simulation software, which verifies the effectiveness of the comprehensive power quality management capability of the proposed topology. |
| Key words: distribution area high frequency isolated hybrid distribution transformer model predictive control optimal duty cycle comprehensive power quality management |
