摘要
为解决负荷波动过大而引起频率和功率的大幅波动甚至越限问题,提出一种转动惯量自适应调节的控制策略,首先建立虚拟同步发电机(VSG)的小信号模型,并在时域下分析其功率突变时各物理量的变化情况。在此基础之上,针对虚拟同步电机的功角变换得出自适应的调节策略,通过对转动惯量的调节提高系统阻尼比,从而有效抑制暂态过程中功率的超调和振荡。最后,仿真和实验均证实了该控制策略的可行性和有效性。
In order to solve the large fluctuations in the frequency and power caused by excessive load fluctuations,the control strategy of self-adaptive adjustment of the rotational inertia is proposed.Firstly,the small-signal model of VSG is established and various physical quantity changes is analyzed in the time domain when its power suddenly changes.On this basis,an adaptive adjustment strategy is derived for the virtual angle synchronous motor.The damping ratio of the system is increased by adjusting the moment of inertia,thereby effectively suppressing the overshoot and oscillation of the power in the transient process.Finally,simulative and experimental results confirm the feasibility and effectiveness of the control strategy.
作者
张福东
朴政国
郭裕祺
张晓磊
周京华
Zhang Fudong;Piao Zhengguo;Guo Yuqi;Zhang Xiaolei;Zhou Jinghua(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;School of Electrical and Control Engineering,North China University of Technology,Beijing 100144,China;State Grid Zhengzhou Electric Power Supply Company,Zhengzhou 450006,China;State Grid Henan Electric Power company Maintenance Company,Zhengzhou 450006,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第10期93-100,共8页
Acta Energiae Solaris Sinica
基金
国网河北省电力有限公司科技项目“混合储能能量管理系统的优化控制与实现”
北京市高水平创新团队建设计划(IDHT20180502)
北方工业大学科技创新工程计划(18XN141)。
关键词
可再生能源
自适应调节
逆变器
虚拟同步发电机
renewable energy resources
adaptive modulation
inverters
virtual synchronous generator
