独立微网风电机组谐波特性多目标优化分析  

Multi-objective optimization analysis of harmonic characteristics of wind turbines in independent microgrid

作　　者：刘珍[1,2,3] 彭海伦 温彩凤[2,3] 汪建文 Liu Zhen;Peng Hailun;Wen Caifeng;Wang Jianwen(College of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Wind and Solar Energy Utilization Technology, Ministry of Education, Inner Mongolia University of Technology,Hohhot 010051,China;College of Energy and Power Engineering, Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学机械工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学风能太阳能利用技术教育部重点实验室,内蒙古呼和浩特010051 [3]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051

出　　处：《可再生能源》2019年第7期1021-1027,共7页Renewable Energy Resources

基　　金：风能太阳能利用技术教育部重点实验室(内蒙古工业大学)开放基金(201608);内蒙古自治区自然科学基金(2017MS0526)

摘　　要：针对分布式永磁风电机组在独立微网中的谐波恶化问题,文章对不同匹配方式的风电机组开展谐波测试。选择电流谐波畸变率(THDi)和电压谐波畸变率(THDu)综合评价独立微网谐波,采用博弈策略改进多目标优化,提出基于权重分析法的微网谐波评价方案。结果表明:选择合适的机组类型以及调节机组叶尖速比可有效降低微网谐波;基于权重分析法赋予各评价指标权重系数,借助多目标优化法求解微网中发电侧谐波极小分布区域。提出微网谐波评价的精确分析和可行性评价方法,为优化独立微网电能质量奠定基础。In this paper, the problem of harmonic deterioration of distributed wind turbines in independent microgrid is addressed. Harmonic testing is carried out for wind turbines with different matching modes to obtain dynamic electrical parameters under different operating conditions. Current harmonic distortion rate (THDi) and voltage harmonic distortion rate (THDu) in the national standard of power quality are selected to evaluate microgrid harmonics comprehensively. The game strategy is used to improve multi-objective optimization, and a harmonic evaluation scheme based on weight analysis method is proposed. The results show that: Choosing the right type of units and changing the operating conditions of units V and lambda can effectively reduce the harmonics of microgrid. The weight coefficients of each evaluation index are given based on the weight analysis method. The minimal harmonic distribution area of generation side in microgrid is solved by means of multi-objective optimization method. An accurate analysis and feasibility evaluation method for harmonic evaluation of microgrid is proposed, which lays a foundation for optimizing the power quality of independent microgrid.

关 键 词：永磁风电机组 谐波 权重分析 多目标优化 

分 类 号：TK51[动力工程及工程热物理—热能工程]