基于一致性的并联虚拟同步发电机分布式协同控制

发布时间：2018-05-30 11:18

  本文选题：虚拟同步发电机 + 一致性算法　； 参考：《控制理论与应用》2017年08期

【摘要】：虚拟同步发电机(virtual synchronous generator,VSG)可模拟同步发电机运行机制,并为系统提供惯性和阻尼支撑.在孤岛模式下,VSG并联运行多采用分散下垂控制,不具备频率恢复以及有功出力合理分配等功能,为此,本文提出了一种基于一致性的并联VSG分布式控制方法,可改善系统频率与有功功率特性.本文首先介绍了传统VSG控制的数学模型,并在此基础上设计了VSG并联系统频率恢复及有功出力合理分配的整体方案.在分布式控制模式下,相邻VSG只需少量信息交互即可控制频率恢复到额定值,并可实现功率的按需分配,满足了不同用户的定制需求.仿真结果验证了所提方法的正确性和有效性.
[Abstract]:Virtual synchronous generator can simulate the operation mechanism of synchronous generator and provide inertia and damping support for the system. In the isolated island mode, the distributed droop control is used in parallel operation of VSG, which does not have the functions of frequency recovery and rational distribution of active power. Therefore, a distributed control method of parallel VSG based on consistency is proposed in this paper. The system frequency and active power characteristics can be improved. This paper first introduces the mathematical model of traditional VSG control, and then designs the overall scheme of frequency recovery and rational distribution of active power in VSG parallel system. In the distributed control mode, the control frequency of adjacent VSG can be restored to the rated value with only a small amount of information exchange, and the power can be allocated according to demand, which can meet the customization needs of different users. Simulation results show that the proposed method is correct and effective.
【作者单位】： 青海大学新能源光伏产业研究中心青海省清洁能源高效利用重点实验室;清华大学电机系电力系统及发电设备控制和国家重点实验室;
【基金】：国家自然科学基金地区基金项目(51567021) 清华大学自主科研计划(20151080416) 青海省基础研究计划项目(应用基础资助研究) 中国博士后科学基金资助~~
【分类号】：TM31
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本文编号：1955111