风光互补电源储能变换器模型预测控制研究
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摘要
针对传统PI控制无法满足风光互补电源协调控制的问题,研究了风光互补电源储能变换器模型预测控制。首先分析了风光互补电源中发电系统的功率输出特性,结合蓄电池荷电状态的限制归纳总结出系统运行的4种工作模式和8种工作状态。然后引入基于模型预测的蓄电池充放电控制方法,可以在不同状态之间切换时实现风力发电系统、光伏发电系统和蓄电池之间的协调控制,从而保证风光互补电源为负荷提供稳定可靠的电能。最后通过仿真验证了该控制方法的可行性。
The traditional PI control cannot satisfy the coordinated control of wind and solar complementary power supply,the model predictive control of energy storage converter in the wind and solar complementary power supply is studied.First of all,by analysing the power generation system and operation characteristics of the hybrid power system,four operating modes and eight working conditions are summarized. Then the battery charging and discharging control method based on model predictive control is used,in which the control method can realize the coordinated operation between the wind,photovoltaic and battery switching between different working modes and working state,thus ensuring the wind-solar hybrid power supply to provide stable and reliable power to load. Finally,the simulation results show the effectiveness of the proposed control method.
The traditional PI control cannot satisfy the coordinated control of wind and solar complementary power supply,the model predictive control of energy storage converter in the wind and solar complementary power supply is studied.First of all,by analysing the power generation system and operation characteristics of the hybrid power system,four operating modes and eight working conditions are summarized. Then the battery charging and discharging control method based on model predictive control is used,in which the control method can realize the coordinated operation between the wind,photovoltaic and battery switching between different working modes and working state,thus ensuring the wind-solar hybrid power supply to provide stable and reliable power to load. Finally,the simulation results show the effectiveness of the proposed control method.
引文
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[2]谭颖,吕智林,李捷.基于改进ELM的风/光/柴/储独立微网分布式电源多目标容量优化配置[J].电力系统保护与控制,2016,44(08):63-70.TAN Ying,LYU Zhi-lin,LI Jie.Multi-objective Optimal Sizing Method for Distributed Power of Wind-Solar-Diesel-Battery Independent Microgrid based on Improved Electromagnetism-like Mechanism[J].Power System Protection and Control,2016,44(08):63-70.
[3]HIROSE T,MATSUO H.Standalone Hybrid Wind-Solar Power Generation System Applying Dump Power Control Without Dump Load[J].IEEE Transactions on Industrial Electronics,2012,59(02):988-997.
[4]殷桂梁,李相男,郭磊,等.混合储能系统在风光互补微电网中的应用[J].电力系统及其自动化学报,2015,27(01):49-59.YIN Gui-liang,LI Xiang-nan,GUO Lei,et al.Application of Hybrid Energy Storagy System on Wind/Solar Hybrid Microgrid[J].Proceedings of the CSU-EPSA,2015,27(01):49-59.
[5]PARIDA A,CHATTERJEE D.Model-based Loss Minimisation Scheme for Wind Solar Hybrid Generation System Using(gridconnected)Doubly Fed Induction Generator[J].IET Electric Power Applications,2016,10(06):548-559.
[6]张蕴昕,孙运全.混合储能在风光互补微网中的控制策略[J].电力系统保护与控制,2015,43(21):93-98.ZHANG Yun-xin,SUN Yun-quan.Control Strategy of a Hybrid Energy Storage in Wind-Solar Hybrid Generation Micro-grid[J].Power System Protection and Control,2015,43(21):93-98.
[7]娄素华,罗鹏,吴耀武,等.计及负荷可控性的微网储能容量优化配置[J].电工技术学报,2016,31(21):39-45.LOU Su-hua,LUO Peng,WU Yao-wu,et al.Sizing of Energy Storage in Microgrid with Controllable Load[J].Transactions of China Electrotechnical Society,2016,31(21):39-45.
[8]姚天亮,吴兴全,李志伟,等.计及多约束条件的风光互补容量配比研究[J].电力系统保护与控制,2017,45(09):126-132.YAO Tian-liang,WU Xing-quan,LI Zhi-wei,et al.Research on Complementary Capacity Ratio of Wind Power and Photovoltaic Considering Multiple Constraints[J].Power System Protection and Control,2017,45(09):126-132.
[9]肖雄,张勇军,王京,等.基于系统级功率平衡的双PWM变频系统模型预测控制研究[J].中国电机工程学报,2016,36(21):5909-5917.XIAO Xiong,ZHANG Yong-jun,WANG Jing,et al.Model Predictive Control Based on the System-level Power Balance Model for Dual-PWMConverters[J].ProceedingsoftheCSEE,2016,36(21):5909-5917.
[10]王擎宇,龚仁喜,秦丽文,等.并联Buck DC/DC变换器的分布式混杂建模与优化控制[J].中国电机工程学报,2016,36(05):1336-1343.WANG Qing-yu,GONG Ren-xi,QIN Li-wen,et al.Distributed Hybrid Modeling and Optimal Control of a Parallel Buck DC/DC Converter[J].Proceedings of the CSEE,2016,36(05):1336-1343.
[11]邓知先,宋文胜,曹梦华.单相PWM整流器模型预测电流控制算法[J].中国电机工程学报,2016,36(11):2996-3004.DENG Zhi-xian,SONG Wen-sheng,CAO Meng-hua.A Model Predictive Current Control Scheme for Single-phase PWM Rectifiers[J].Proceedings of the CSEE,2016,36(11):2996-3004.
[12]梅杨,齐园园,李晓晴.光储系统中双向变换器的模型预测控制方法[J].电气传动,2015,45(11):31-35.MEI Yang,QI Yuan-yuan,LI Xiao-qing.Model Predictive Control Algorithm for Bi-directional DC-DC Converter of a Novel Stand-alone Photovoltaic Energy Storage System[J].Electric Drive,2015,45(11):31-35.