双九相储能电机带整流负载系统降阶等效平均模型研究
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摘要
双九相储能电机是一种新型多相同步发电机,主发电机数学方程高达21阶。电机经整流器向负载放电时,电机转速、输出电压与电流不断变化,电机机械动态与电磁暂态强耦合,难以用解析方法进行分析。该文首先推导了双九相主发电机降阶等效三相电机数学模型,简化了双九相主发电机模型的复杂程度;其次,由于旋转整流器、整流器交流侧与直流侧高次谐波对系统有功功率传递和系统动态过程影响较小,忽略高次谐波,考虑交流侧基波和直流侧平均值作用的基础上推导了系统平均模型,进一步简化系统模型,提高系统仿真效率。在Matlab/Simulink仿真环境中建立双九相储能电机带整流负载系统的降阶等效平均模型,仿真结果验证了该模型的正确性与有效性。
The dual nine-phase energy storage electrical machine is a new kind of multiphase synchronous machine, and the mathematical equation of its main generator is up to 21 orders. when the machine releases energy to load through rectifier, the rotate speed, output voltage and current is constantly changing, and mechanical dynamics is strong coupling with electromagnetic transient, which makes it difficult to analyze with analytical method. Firstly, the equivalent three-phase reduced model is derived to simplify the original model. Secondly, ignoring high harmonics due to the AC side and DC side higher harmonics of rectifier having little influence on the system's active power transfer and dynamic behavior, considering the function of the ac side variable's fundamental and dc side variable's average, the system average model is derived to simplify the original model and promote the computation efficiency further. The equivalent reduced average model of dual nine-phase energy storage generator with rectifier's load is established in the Matlab/Simulink software, and the effectiveness and correctness of the model is verified by comparing simulation results.
The dual nine-phase energy storage electrical machine is a new kind of multiphase synchronous machine, and the mathematical equation of its main generator is up to 21 orders. when the machine releases energy to load through rectifier, the rotate speed, output voltage and current is constantly changing, and mechanical dynamics is strong coupling with electromagnetic transient, which makes it difficult to analyze with analytical method. Firstly, the equivalent three-phase reduced model is derived to simplify the original model. Secondly, ignoring high harmonics due to the AC side and DC side higher harmonics of rectifier having little influence on the system's active power transfer and dynamic behavior, considering the function of the ac side variable's fundamental and dc side variable's average, the system average model is derived to simplify the original model and promote the computation efficiency further. The equivalent reduced average model of dual nine-phase energy storage generator with rectifier's load is established in the Matlab/Simulink software, and the effectiveness and correctness of the model is verified by comparing simulation results.
引文
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[2]戴兴建,邓占峰.大容量先进飞轮储能电源技术发展状况[J].电工技术学报,2011,26(7):133-140.Dai Xingjian,Deng Zhanfeng.Review on advanced flywheel energy storage system with large scale[J].Transactions of China Electrotechnical Society,2011,26(7):133-140.
[3]张维煜,朱熀秋.飞轮储能关键技术及其发展现状[J].电工技术学报,2011,26(7):141-146.Zhang Weiyu,Zhu Huangqiu.Key technologies and development status of flywheel energy storage system[J].Transactions of China Electrotechnical Society,2011,26(7):141-146.
[4]马伟明.十二相同步发电机及其整流系统的研究[D].北京:清华大学电机工程与应用电子技术系,1995.
[5]吴新振,张伟玲,董海涛,等.十二相整流发电机二极管开路的故障运行分析[J].电工技术学报,2017,32(3):157-163.Wu Xinzhen,Zhang Weiling,Dong Haitao,et al.Analysis of diode-open fault operation for 12-phase rectifier generators[J].Transactions of China Electrotechnical Society,2017,32(3):157-163.
[6]郑晓钦,王东.十五相感应电机对称缺相运行时的定子漏抗计算[J].电工技术学报,2016,31(15):26-31.Zheng Xiaoqin,Wang Dong.Calculation of stator leakage reactance of fifteen-phase induction motor under symmetrical fault condition[J].Transactions of China Electrotechnical Society,2016,31(15):26-31.
[7]欧阳斌,马伟明,王东,等.大容量双六相储能电机系统建模与仿真[J].电机与控制学报,2014,18(1):92-97.Ouyang Bin,Ma Weiming,Wang Dong,et al.Modeling and simulation of energy storage system with dual six-phase electrical machine of great capacity[J].Electric Machines and Control,2014,18(1):92-97.
[8]晏明,马伟明,欧阳斌,等.双九相储能电机系统性能研究[J].中国电机工程学报,2015,35(15):3770-3775.Yan Ming,Ma Weiming,Ouyang Bin,et al.Study on the characteristics of dual nine-phase energy storage electrical machine[J].Proceedings of the CSEE,2015,35(15):3770-3775.
[9]刘洋,史黎明,赵鲁,等.电励磁同步电机惯性储能直流馈电系统新型单位功率因数控制[J].电工技术学报,2016,31(1):147-154.Liu Yang,Shi Liming,Zhao Lu,et al.A novel unity power factor control of electrically excited synchronous motor in an inertia wheel energy storage system[J].Transactions of China Electrotechnical Society,2016,31(1):147-154.
[10]朱革兰,李海锋,王钢.电流闭锁式母线快速保护系统分析与实时仿真[J].电力系统保护与控制,2009,37(9):57-59,64.Zhu Gelan,Li Haifeng,Wang Gang.Analysis and real-time simulation of current blocking fast busbar protection system[J].Power System Protection and Control,2009,37(9):57-59,64.
[11]张超,庄劲武,戚连锁,等.Hypersim在密集节点独立电力系统实时仿真中的应用[J].计算机仿真,2005,22(12):14-16,37.Zhang Chao,Zhuang Jinwu,Qi Liansuo,et al.Application of Hypersim to real-time simulation of dense nodes absolute power systems[J].Computer Simulation,2005,22(12):14-16,37.
[12]罗建民,戚光宇,何正文,等.电力系统实时仿真技术研究综述[J].继电器,2006,34(18):79-86.Luo Jianmin,Qi Guangyu,He Zhengwen,et al.Research on power system real-time simulation[J].Relay,2006,34(18):79-86.
[13]周卫,张尧,夏成军,等.分布式发电对配电网继电保护的影响[J].电力系统保护与控制,2010,38(3):1-5,10.Zhou Wei,Zhang Yao,Xia Chengjun,et al.Effect of distributed generation on relay protection of distributed system[J].Power System Protection andControl,2010,38(3):1-5,10.
[14]杨冬,刘玉田,牛新生.电网结构对短路电流水平及受电能力的影响分析[J].电力系统保护与控制,2009,37(2):62-67.Yang Dong,Liu Yutian,Niu Xinsheng.Analysis on influence of power grid structure upon short circuit level and power receiving capability[J].Power SystemProtection and Control,2009,37(2):62-67.
[15]陈俊全,马伟明,刘德志,等.对称六相双Y发电机绕组单Y短路时励磁线圈过电压分析[J].海军工程大学学报,2007,19(6):21-25.Chen Junquan,Ma Weiming,Liu Dezhi,et al.Analysis of over-voltage in field winding of 6-phase dual-Y generator in single-Y steady state short circuit condition[J].Journal of Naval University of Engineering,2007,19(6):21-25.