摘要
随着电网技术的发展,直流微电网已经成为了电网的重要组成部分,成为居民住宅和商用楼宇的主要能源来源型式,具有可靠性高、可控性强的优点。微电网的稳定性控制一直是微电网的重点研究方向,本文基于分布式控制模式下的微电网大信号、小信号模型的角度出发,采用Lyapunov方法研究了直流微电网中与大信号下稳定运行的参数边界条件,提出了母线电流的小信号扰动对母线电压的影响下的直流微电网稳定性判定条件,并且提出了基于分布式控制的直流微电网的稳定性设计策略,经过仿真验证,本文所提出的判定条件能够对直流微电网稳定性进行判定。
With the development of power grid technology,DC microgrid has become an important part of power grid and the main energy source type for residential and commercial buildings,with the advantages of high reliability and controllability.The stability control of microgrid has been the key research direction of microgrid.Based on the perspective of large-signal and small-signal model of microgrid under distributed control mode,this paper adopts Lyapunov method to study the parameter boundary conditions of stable operation in DC microgrid with large signal,proposes the stability determination condition of DC microgrid under the influence of small-signal disturbance of bus current on bus voltage,and The stability design strategy of DC microgrid based on distributed control is proposed.After simulation,it is verified that the proposed judgment conditions can determine the stability of DC microgrid.
作者
张亚琼
ZHANG Ya-qiong(Nanning Branch Campus of Guilin University of Technology,Nanning 530001,China)
出处
《电气开关》
2022年第1期46-50,共5页
Electric Switchgear
